/* ========================================
   VARIABLES & BASE STYLES
======================================== */
:root {
  --color-primary: #193073;
  --color-primary-rgb: 25, 48, 115;
  --color-primary-dark: #0f1d45;
  --color-white: #FFFFFF;
  --color-black: #000000;
  --color-accent: #F2F2F2;
  --color-bg-light: #F8F9FA;
  --color-text: #1a1a1a;
  --color-text-light: #666666;
  --color-text-muted: #999999;
  --color-border: rgba(25, 48, 115, 0.1);
  
  --font-display: 'Playfair Display', serif;
  --font-display-en: 'Cormorant Garamond', serif;
  --font-serif: 'Noto Serif JP', serif;
  --font-sans: 'Inter', sans-serif;
  --font-sans-jp: 'Noto Sans JP', sans-serif;
  
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out-quint: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
  --ease-in-out-quint: cubic-bezier(0.83, 0, 0.17, 1);
  
  --header-height: 140px;
  --section-padding: 12vh;
  --container-max: 1400px;
  --container-padding: 5%;
}

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

html {
  font-size: 16px;
  scroll-behavior: auto; /* Handled by JS */
}

body {
  font-family: var(--font-serif);
  font-weight: 400;
  line-height: 1.8;
  color: var(--color-text);
  background: var(--color-white);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body.no-scroll {
  overflow: hidden;
}

img {
  max-width: 100%;
  height: auto;
  vertical-align: middle;
}

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

button {
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
}

ul, ol {
  list-style: none;
}

/* Selection */
::selection {
  background: var(--color-primary);
  color: var(--color-white);
}

/* Honeypot */
.honeypot {
  position: absolute;
  left: -9999px;
  opacity: 0;
  pointer-events: none;
}

/* SP only */
.sp-only {
  display: none;
}

/* ========================================
   PAGE LOADER
======================================== */
.loader {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.8s var(--ease-out-expo), visibility 0.8s var(--ease-out-expo);
}

.loader.hidden {
  opacity: 0;
  visibility: hidden;
}

.loader-inner {
  text-align: center;
}

.loader-logo {
  margin-bottom: 2rem;
}

.loader-logo img {
  width: 120px;
  height: auto;
  filter: brightness(0) invert(1);
}

.loader-progress {
  width: 120px;
  height: 2px;
  background: rgba(255, 255, 255, 0.2);
  margin: 0 auto 1rem;
  overflow: hidden;
}

.loader-bar {
  width: 0;
  height: 100%;
  background: var(--color-white);
  transition: width 0.3s ease;
}

.loader-text {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.6);
}

/* ========================================
   HEADER
======================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 0 var(--container-padding);
  height: var(--header-height);
  transition: all 0.5s var(--ease-out-expo);
}

.header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  opacity: 0;
  transition: opacity 0.5s var(--ease-out-expo);
}

.header.scrolled::before {
  opacity: 1;
}

.header.scrolled {
  height: 80px;
  box-shadow: 0 1px 12px rgba(0, 0, 0, 0.06);
}

.header.scrolled .logo-img {
  height: 60px;
}

.header-inner {
  position: relative;
  max-width: var(--container-max);
  margin: 0 auto;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-logo {
  position: relative;
  z-index: 10;
}

.logo-img {
  height: 120px;
  width: auto;
  transition: filter 0.4s ease;
}

.header:not(.scrolled) .logo-img {
  filter: brightness(0) invert(1);
}

.nav-main {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

.nav-list {
  display: flex;
  gap: 2.5rem;
}

.nav-link {
  position: relative;
  font-family: var(--font-sans-jp);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-white);
  padding: 0.5rem 0;
  transition: color 0.4s ease;
}

.header.scrolled .nav-link {
  color: var(--color-text);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: currentColor;
  transition: width 0.4s var(--ease-out-expo);
}

.nav-link:hover::after {
  width: 100%;
}

.header-cta {
  position: relative;
  z-index: 10;
  font-family: var(--font-sans-jp);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 0.875rem 2rem;
  background: var(--color-white);
  color: var(--color-primary);
  transition: all 0.4s var(--ease-out-expo);
}

.header-cta:hover {
  background: #B8975A;
  border-color: #B8975A;
  color: var(--color-white);
}

.header.scrolled .header-cta {
  background: var(--color-primary);
  color: var(--color-white);
}

.header.scrolled .header-cta:hover {
  background: #B8975A;
  color: var(--color-white);
  box-shadow: none;
  border-color: #B8975A;
}

/* Nav Toggle */
.nav-toggle {
  display: none;
  position: relative;
  z-index: 10;
  width: 28px;
  height: 20px;
  flex-direction: column;
  justify-content: space-between;
}

.nav-toggle-line {
  width: 100%;
  height: 1px;
  background: var(--color-white);
  transition: all 0.3s ease;
  transform-origin: center;
}

.header.scrolled .nav-toggle-line {
  background: var(--color-primary);
}

.nav-toggle.active .nav-toggle-line:nth-child(1) {
  transform: translateY(9.5px) rotate(45deg);
}

.nav-toggle.active .nav-toggle-line:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active .nav-toggle-line:nth-child(3) {
  transform: translateY(-9.5px) rotate(-45deg);
}

/* Mobile Navigation */
.nav-mobile {
  position: fixed;
  inset: 0;
  z-index: 999;
  background: var(--color-primary);
  opacity: 0;
  visibility: hidden;
  transition: all 0.5s var(--ease-out-expo);
}

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

.nav-mobile-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.nav-mobile-list li {
  overflow: hidden;
}

.nav-mobile-link {
  display: block;
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--color-white);
  padding: 0.75rem 0;
  transform: translateY(100%);
  opacity: 0;
  transition: all 0.5s var(--ease-out-expo);
}

.nav-mobile.active .nav-mobile-link {
  transform: translateY(0);
  opacity: 1;
}

.nav-mobile.active li:nth-child(1) .nav-mobile-link { transition-delay: 0.1s; }
.nav-mobile.active li:nth-child(2) .nav-mobile-link { transition-delay: 0.15s; }
.nav-mobile.active li:nth-child(3) .nav-mobile-link { transition-delay: 0.2s; }
.nav-mobile.active li:nth-child(4) .nav-mobile-link { transition-delay: 0.25s; }
.nav-mobile.active li:nth-child(5) .nav-mobile-link { transition-delay: 0.3s; }
.nav-mobile.active li:nth-child(6) .nav-mobile-link { transition-delay: 0.35s; }

/* ========================================
   HERO SECTION - Liquid Canvas Transition
======================================== */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--color-primary-dark);
}

.hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.hero-images-preload {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
}

/* hero-overlay removed - now applied to hero-content */
.hero-overlay {
  display: none;
}

.hero-content {
  position: relative;
  z-index: 3;
  text-align: center;
  padding: 2.5rem 4rem 2.5rem;
  background: linear-gradient(
    135deg,
    rgba(0, 0, 0, 0.16) 0%,
    rgba(0, 0, 0, 0.14) 50%,
    rgba(25, 48, 115, 0.18) 100%
  );
}

/* Hero Copy - Refined Centered Layout */
.hero-copy {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  margin-bottom: 0;
}

.hero-line {
  overflow: visible;
  line-height: 1.1;
}

.hero-line-inner {
  transform: translateY(120%);
  opacity: 0;
}

/* Character Animation Styles */
.hero-text {
  display: inline-block;
  color: var(--color-white);
}

.hero-text .char {
  display: inline-block;
  opacity: 0;
  transform: translateY(100%) rotateX(-90deg);
  transform-origin: center bottom;
}

/* All text lines unified size */
.hero-text-main {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3.8vw, 2.8rem);
  font-weight: 500;
  letter-spacing: 0.1em;
  line-height: 1.2;
}

/* Symbol Styles - × */
.hero-line-symbol {
  overflow: visible;
  line-height: 0.9;
  margin: 0.6rem 0;
}

.hero-text-symbol {
  font-size: 0;
  color: transparent;
  position: relative;
  display: inline-block;
  line-height: 0.8;
}

.hero-text-multiply {
  width: 3.5vw;
  height: 3.5vw;
}

.hero-text-multiply::before,
.hero-text-multiply::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 100%;
  height: 1px;
  background: rgba(255, 255, 255, 0.75);
}

.hero-text-multiply::before {
  transform: translate(-50%, -50%) rotate(45deg);
}

.hero-text-multiply::after {
  transform: translate(-50%, -50%) rotate(-45deg);
}

/* Vertical Equals Sign */
.hero-line-equals {
  overflow: visible;
  margin: 0.6rem 0;
}

.hero-text-equals {
  width: 3.5vw;
  height: 3.5vw;
  transform: rotate(90deg);
  margin-left: 0;
}

.hero-text-equals::before,
.hero-text-equals::after {
  content: '';
  position: absolute;
  left: 0;
  width: 100%;
  height: 1px;
  background: rgba(255, 255, 255, 0.75);
}

.hero-text-equals::before {
  top: 30%;
}

.hero-text-equals::after {
  bottom: 30%;
}

/* Brand Text - unified with main */
.hero-line-brand {
  margin-top: 0;
}

.hero-text-brand {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3.8vw, 2.8rem);
  font-weight: 400;
  letter-spacing: 0.18em;
}

/* Tagline */
.hero-tagline {
  opacity: 0;
  transform: translateY(20px);
}

.hero-tagline p {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  color: rgba(255, 255, 255, 0.7);
}

/* Hero Scroll Indicator */
.hero-scroll-indicator {
  position: absolute;
  bottom: 4vh;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  opacity: 0;
}

.scroll-text {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-white);
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: rgba(255, 255, 255, 0.3);
  position: relative;
  overflow: hidden;
}

.scroll-dot {
  width: 3px;
  height: 3px;
  background: var(--color-white);
  border-radius: 50%;
  position: absolute;
  left: -1px;
  animation: scrollDot 2s ease-in-out infinite;
}

@keyframes scrollDot {
  0% { top: 0; opacity: 0; }
  20% { opacity: 1; }
  80% { opacity: 1; }
  100% { top: 100%; opacity: 0; }
}

/* Hero Slide Navigation */
.hero-slide-nav {
  position: absolute;
  bottom: 4vh;
  right: var(--container-padding);
  z-index: 3;
  display: flex;
  gap: 0.75rem;
}

.slide-nav-btn {
  width: 40px;
  height: 3px;
  background: rgba(255, 255, 255, 0.3);
  position: relative;
  overflow: hidden;
  cursor: pointer;
  transition: background 0.3s ease;
}

.slide-nav-btn:hover {
  background: rgba(255, 255, 255, 0.5);
}

.slide-nav-btn span {
  position: absolute;
  inset: 0;
  background: var(--color-white);
  transform: scaleX(0);
  transform-origin: left;
  /* No CSS transition - controlled entirely by JS via scaleX */
}

/* ========================================
   SECTION COMMON STYLES
======================================== */
.section-label {
  display: inline-block;
  font-family: var(--font-display-en);
  font-size: 0.875rem;
  font-weight: 300;
  font-style: italic;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  margin-bottom: 1.5rem;
}

.section-title-large {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--color-text);
  line-height: 1.1;
}

.section-title-large .title-jp {
  display: block;
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  color: var(--color-text-light);
  margin-top: 1rem;
}

/* Animation Items */
.anim-item {
  opacity: 0;
  transform: translateY(40px);
}

.anim-item.in-view {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 1s var(--ease-out-expo), transform 1s var(--ease-out-expo);
}

/* ========================================
   MESSAGE SECTION
======================================== */
.message {
  padding: var(--section-padding) var(--container-padding);
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.message-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 8%;
  align-items: center;
}

.message-visual {
  position: relative;
}

.message-image-wrapper {
  position: relative;
  aspect-ratio: 4/5;
  overflow: hidden;
}

.message-image-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.2);
  transition: transform 1.5s var(--ease-out-expo);
}

.message-image-wrapper.revealed img {
  transform: scale(1);
}

.message-image-reveal {
  position: absolute;
  inset: 0;
  background: var(--color-primary);
  z-index: 2;
  transform-origin: right;
  transform: scaleX(1);
}

.message-image-frame {
  position: absolute;
  top: 2rem;
  left: 2rem;
  right: -2rem;
  bottom: -2rem;
  border: 1px solid var(--color-border);
  z-index: -1;
}

.section-header {
  margin-bottom: 3rem;
}

.section-header .section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 500;
  line-height: 2;
  letter-spacing: 0.1em;
}

.message-text {
  margin-bottom: 3rem;
}

.message-text p {
  font-size: 15px;
  line-height: 2.0;
  color: #444;
}

.message-text p + p {
  margin-top: 2.2em;
}

.message-signature {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.25rem;
  margin-top: 40px;
}

.signature-role {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  color: var(--color-text-muted);
}

.signature-name {
  font-family: var(--font-serif);
  font-size: 23px;
  letter-spacing: 0.15em;
}

.signature-img {
  display: block;
  height: 40px;
  width: auto;
  object-fit: contain;
}

.signature-en {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-style: italic;
  color: var(--color-text-light);
}

/* ========================================
   SERVICE SECTION: "Abstract Numbers"
======================================== */
.service {
  padding: var(--section-padding) var(--container-padding);
  background: var(--color-white);
}

.service-header {
  max-width: var(--container-max);
  margin: 0 auto 10vh;
}

.service-list {
  max-width: var(--container-max);
  margin: 0 auto;
}

.service-item {
  position: relative;
  padding: 10vh 0;
  border-top: 1px solid rgba(0, 0, 0, 0.08);
  overflow: hidden;
}

.service-item:last-child {
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

.service-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8%;
  align-items: center;
}

.service-item:nth-child(even) .service-inner {
  direction: rtl;
}

.service-item:nth-child(even) .service-inner > * {
  direction: ltr;
}

.service-visual {
  position: relative;
  z-index: 2;
}

.service-image-wrapper {
  position: relative;
  aspect-ratio: 16/10;
  overflow: hidden;
}

.service-image-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s var(--ease-out-expo);
}

.service-item:hover .service-image-wrapper img {
  transform: scale(1.05);
}

.service-content {
  position: relative;
  padding: 2rem 0;
  overflow: hidden;
}

.service-number-bg {
  position: absolute;
  top: 50%;
  right: -10%;
  transform: translateY(-50%);
  font-family: var(--font-display);
  font-size: clamp(12rem, 25vw, 20rem);
  font-weight: 400;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(25, 48, 115, 0.08);
  pointer-events: none;
  user-select: none;
  z-index: 0;
}

.service-number {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-style: italic;
  letter-spacing: 0.1em;
  color: #B8975A;
  margin-bottom: 1.5rem;
}

.service-title {
  margin-bottom: 1.5rem;
}

.service-title .title-en {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 400;
  letter-spacing: 0.02em;
  margin-bottom: 0.5rem;
}

.service-title .title-jp {
  display: block;
  font-family: var(--font-serif);
  font-size: 0.9rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  color: var(--color-text-light);
}

.service-desc {
  font-size: 15px;
  line-height: 2.0;
  color: #444;
  margin-bottom: 2rem;
}

.service-link {
  display: inline-flex;
  align-items: center;
  gap: 1rem;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  transition: gap 0.4s var(--ease-out-expo);
}

.service-link:hover {
  gap: 1.5rem;
}

.service-link svg {
  transition: transform 0.4s var(--ease-out-expo);
}

.service-link:hover svg {
  transform: translateX(4px);
}

/* ========================================
   WORKS SECTION: "The Craftsmanship"
   3-Column Vertical Portrait Layout
======================================== */
.works {
  padding: var(--section-padding) var(--container-padding);
  background: var(--color-bg-light);
}

.works-header {
  max-width: var(--container-max);
  margin: 0 auto 8vh;
}

.works-grid {
  max-width: var(--container-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.work-card {
  position: relative;
  cursor: default;
}

.work-card-link {
  display: block;
  cursor: pointer;
}

/* Current non-clickable state */
.work-card-inner {
  display: block;
}

.work-card-inner .work-card-overlay {
  display: none;
}

.work-card-inner ~ .work-card-image img {
  transition: none;
}

.work-card-image {
  position: relative;
  aspect-ratio: 5/6;
  overflow: hidden;
  margin-bottom: 22px;
}

.work-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 1s var(--ease-out-expo);
}

.work-card-link:hover ~ .work-card-image img,
.work-card:hover .work-card-link .work-card-image img {
  transform: scale(1.08);
}

/* Disable hover zoom when not clickable */
.work-card:hover .work-card-inner .work-card-image img {
  transform: none;
}

.work-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(25, 48, 115, 0.9) 0%,
    rgba(25, 48, 115, 0.7) 100%
  );
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.5s var(--ease-out-expo);
}

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

.work-card-view {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-sans);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-white);
  padding: 0.875rem 1.5rem;
  border: 1px solid rgba(255, 255, 255, 0.4);
  transform: translateY(20px);
  opacity: 0;
  transition: all 0.5s var(--ease-out-expo) 0.1s;
}

.work-card:hover .work-card-view {
  transform: translateY(0);
  opacity: 1;
}

.view-icon {
  display: flex;
  transition: transform 0.3s var(--ease-out-expo);
}

.work-card-view:hover .view-icon {
  transform: translate(3px, -3px);
}

.work-card-content {
  padding: 0 0.25rem;
}

.work-card-category {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 0.6rem;
}

.work-card-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 400;
  letter-spacing: 0.02em;
  margin-bottom: 0.6rem;
  line-height: 1.4;
}

.work-card-desc {
  font-size: 0.8rem;
  line-height: 1.8;
  color: var(--color-text-light);
}

.works-more {
  max-width: var(--container-max);
  margin: 6vh auto 0;
  text-align: center;
}

.btn-view-all {
  display: inline-flex;
  align-items: center;
  gap: 1rem;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  color: var(--color-primary);
  padding: 1rem 0;
  border-bottom: 1px solid var(--color-primary);
  transition: all 0.4s var(--ease-out-expo);
}

.btn-view-all:hover {
  gap: 1.5rem;
}

.btn-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--color-primary);
  border-radius: 50%;
  transition: all 0.4s var(--ease-out-expo);
}

.btn-view-all:hover .btn-arrow {
  background: var(--color-primary);
  color: var(--color-white);
}

/* ========================================
   TRANSACTION SECTION: "Brand Trust"
======================================== */
.transaction {
  padding: var(--section-padding) 0;
  background: var(--color-white);
  overflow: hidden;
}

.transaction-header {
  max-width: var(--container-max);
  margin: 0 auto 8vh;
  padding: 0 var(--container-padding);
}

.transaction-slider {
  position: relative;
  width: 100%;
  overflow: hidden;
  mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
}

/* ロゴが5個以上のとき: 無限ループでスクロール */
.transaction-track {
  display: flex;
  width: fit-content;
  animation: slideLoop 40s linear infinite;
}

.transaction-track:hover {
  animation-play-state: paused;
}

/* ロゴが5個未満のとき: センター寄せで固定表示 */
.transaction-slider.is-static {
  mask-image: none;
  -webkit-mask-image: none;
}

.transaction-slider.is-static .transaction-track {
  width: 100%;
  justify-content: center;
  flex-wrap: wrap;
  animation: none;
}

@keyframes slideLoop {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.transaction-item {
  flex-shrink: 0;
  width: 320px;
  margin: 0 3rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  opacity: 1;
  filter: grayscale(0%);
  transition: transform 0.4s ease;
}

.transaction-item:hover {
  transform: scale(1.05);
}

.transaction-item-logo {
  width: 100%;
  height: 140px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.transaction-item img {
  max-width: 100%;
  max-height: 110px;
  object-fit: contain;
}

.transaction-item-name {
  font-family: var(--font-sans-jp, 'Noto Sans JP', sans-serif);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text, #1a1a1a);
  text-align: center;
  letter-spacing: 0.02em;
  line-height: 1.4;
}

/* 折り返し時（レスポンシブやロゴ5個未満のセンター固定表示）は
   アイテム同士の上下間隔を広げて、ロゴ+社名が1ブロックに見えるようにする */
.transaction-slider.is-static .transaction-track,
.transaction-track {
  row-gap: 4rem;
}

@media (max-width: 768px) {
  .transaction-item {
    width: 220px;
    margin: 0 1.5rem;
    gap: 0.2rem;
  }
  .transaction-item-logo {
    height: 100px;
  }
  .transaction-item img {
    max-height: 80px;
  }
  .transaction-item-name {
    font-size: 0.85rem;
  }
  .transaction-slider.is-static .transaction-track,
  .transaction-track {
    row-gap: 3rem;
  }
}

/* ========================================
   COMPANY SECTION
======================================== */
.company {
  position: relative;
  padding: var(--section-padding) var(--container-padding);
  background: var(--color-white);
  overflow: hidden;
}

.company-bg-logo {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 60vw;
  max-width: 800px;
  opacity: 0.03;
  pointer-events: none;
}

.company-bg-logo img {
  width: 100%;
  height: auto;
}

.company-inner {
  position: relative;
  max-width: 1000px;
  margin: 0 auto;
}

.company-header {
  margin-bottom: 8vh;
}

.company-table {
  position: relative;
}

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

.company-row {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 4rem;
  padding: 2rem 0;
  border-bottom: 1px solid var(--color-border);
}

.company-row:first-child {
  border-top: 1px solid var(--color-border);
}

.company-row dt {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-light);
}

.company-row dd {
  font-size: 0.95rem;
  line-height: 2;
}

.company-row dd .en {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  color: var(--color-text-light);
  margin-top: 0.25rem;
}

/* ========================================
   NEWS SECTION
======================================== */
.news {
  padding: var(--section-padding) var(--container-padding);
  background: var(--color-white);
}

.news-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.news-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 6vh;
}

.news-view-all {
  display: inline-flex;
  align-items: center;
  gap: 1rem;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  color: var(--color-primary);
}

.view-all-arrow {
  width: 40px;
  height: 1px;
  background: var(--color-primary);
  position: relative;
  transition: width 0.4s var(--ease-out-expo);
}

.view-all-arrow::after {
  content: '';
  position: absolute;
  right: 0;
  top: -4px;
  width: 8px;
  height: 8px;
  border-right: 1px solid var(--color-primary);
  border-top: 1px solid var(--color-primary);
  transform: rotate(45deg);
}

.news-view-all:hover .view-all-arrow {
  width: 60px;
}

.news-list {
  border-top: 1px solid var(--color-border);
}

.news-item {
  display: grid;
  grid-template-columns: 110px auto 1fr auto;
  gap: 2rem;
  align-items: center;
  padding: 1.75rem 0;
  border-bottom: 1px solid var(--color-border);
  transition: all 0.3s ease;
  text-decoration: none;
  color: inherit;
  min-height: 4rem;
}

a.news-item:hover,
.news-item.clickable:hover {
  padding-left: 1rem;
  background: rgba(25, 48, 115, 0.02);
  cursor: pointer;
}

.news-date {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-style: italic;
  color: var(--color-text-light);
}

.news-category {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
  padding: 0.35rem 0.75rem;
  background: rgba(25, 48, 115, 0.08);
}

.news-title {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  font-weight: 400;
  letter-spacing: 0.03em;
}

.news-arrow {
  opacity: 0;
  transform: translateX(-10px);
  transition: all 0.3s var(--ease-out-expo);
}

a.news-item:hover .news-arrow,
.news-item.clickable:hover .news-arrow {
  opacity: 1;
  transform: translateX(0);
}

/* ========================================
   CONTACT SECTION: "High-Security System"
======================================== */
.contact {
  padding: var(--section-padding) var(--container-padding);
  background: var(--color-primary);
  color: var(--color-white);
}

.contact-inner {
  max-width: 900px;
  margin: 0 auto;
}

.contact-header {
  text-align: center;
  margin-bottom: 6vh;
}

.contact .section-label {
  color: rgba(255, 255, 255, 0.6);
}

.contact .section-title-large {
  color: var(--color-white);
}

.contact .section-title-large .title-jp {
  color: rgba(255, 255, 255, 0.7);
}

.contact-lead {
  font-size: 0.95rem;
  line-height: 2;
  color: rgba(255, 255, 255, 0.8);
  margin-top: 2rem;
}

/* Form Styles */
.contact-form {
  position: relative;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
}

.form-group-full {
  grid-column: 1 / -1;
}

.form-label {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.label-text {
  font-family: var(--font-sans);
  font-size: 15px;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.9);
}

.label-required {
  font-family: var(--font-sans);
  font-size: 0.6rem;
  letter-spacing: 0.05em;
  color: #ff6b6b;
}

.label-optional {
  font-family: var(--font-sans);
  font-size: 0.6rem;
  letter-spacing: 0.05em;
  color: rgba(255, 255, 255, 0.5);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.3);
  padding: 1rem 0;
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--color-white);
  transition: border-color 0.3s ease;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-bottom-color: var(--color-white);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: rgba(255, 255, 255, 0.4);
}

.form-textarea {
  resize: vertical;
  min-height: 150px;
}

.form-select-wrapper {
  position: relative;
}

.form-select-wrapper::after {
  content: '';
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 8px;
  height: 8px;
  border-right: 1px solid rgba(255, 255, 255, 0.5);
  border-bottom: 1px solid rgba(255, 255, 255, 0.5);
  transform: translateY(-70%) rotate(45deg);
  pointer-events: none;
}

.form-select {
  cursor: pointer;
  appearance: none;
  padding-right: 2rem;
}

.form-select option {
  background: var(--color-primary);
  color: var(--color-white);
}

.form-error {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.7rem;
  color: #ff6b6b;
  margin-top: 0.5rem;
  min-height: 1rem;
}

/* Checkbox */
.form-privacy {
  margin-top: 1rem;
}

.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  cursor: pointer;
}

.form-checkbox input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.checkbox-custom {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border: 1px solid rgba(255, 255, 255, 0.4);
  margin-top: 2px;
  position: relative;
  transition: all 0.3s ease;
}

.form-checkbox input:checked + .checkbox-custom {
  background: var(--color-white);
  border-color: var(--color-white);
}

.checkbox-custom::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 6px;
  width: 5px;
  height: 10px;
  border-right: 2px solid var(--color-primary);
  border-bottom: 2px solid var(--color-primary);
  transform: rotate(45deg) scale(0);
  transition: transform 0.2s ease;
}

.form-checkbox input:checked + .checkbox-custom::after {
  transform: rotate(45deg) scale(1);
}

.checkbox-text {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.6;
}

.checkbox-text a {
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* Submit Button */
.form-submit {
  margin-top: 3rem;
  text-align: center;
}

.btn-submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  max-width: 320px;
  width: 100%;
  padding: 18px 40px;
  background: #B8975A;
  color: var(--color-white);
  border: none;
  font-family: var(--font-sans-jp);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

.btn-submit:hover:not(:disabled) {
  background-color: #a3824d;
}

.btn-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-submit .btn-loading {
  display: none;
}

.btn-submit.loading .btn-text {
  display: none;
}

.btn-submit.loading .btn-loading {
  display: block;
}

.spinner {
  width: 24px;
  height: 24px;
  animation: rotate 1.4s linear infinite;
}

.spinner .path {
  stroke: currentColor;
  stroke-linecap: round;
  animation: dash 1.4s ease-in-out infinite;
}

@keyframes rotate {
  100% { transform: rotate(360deg); }
}

@keyframes dash {
  0% { stroke-dasharray: 1, 150; stroke-dashoffset: 0; }
  50% { stroke-dasharray: 90, 150; stroke-dashoffset: -35; }
  100% { stroke-dasharray: 90, 150; stroke-dashoffset: -124; }
}

/* reCAPTCHA Notice */
.recaptcha-notice {
  margin-top: 1.5rem;
  text-align: center;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.5);
  line-height: 1.6;
}

.recaptcha-notice a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.recaptcha-notice a:hover {
  color: var(--color-white);
}

/* Form Message */
.form-message {
  margin-top: 2rem;
  padding: 1rem 1.5rem;
  text-align: center;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  border-radius: 4px;
  display: none;
}

.form-message.success {
  display: block;
  background: rgba(76, 175, 80, 0.2);
  color: #4CAF50;
}

.form-message.error {
  display: block;
  background: rgba(255, 107, 107, 0.2);
  color: #ff6b6b;
}

/* ========================================
   COMING SOON PLACEHOLDER
======================================== */
.coming-soon {
  text-align: center;
  font-family: var(--font-display-en);
  font-size: 1.125rem;
  font-style: italic;
  letter-spacing: 0.15em;
  color: var(--color-text-light);
  padding: 6vh 0;
}

/* ========================================
   FOOTER
======================================== */
.footer {
  position: relative;
  padding: 6vh var(--container-padding) 4vh;
  background: var(--color-primary-dark);
  color: var(--color-white);
}

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

.footer-main {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding-bottom: 4vh;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo {
  height: 50px;
  width: auto;
  filter: brightness(0) invert(1);
  margin-bottom: 1.5rem;
}

.footer-address {
  font-size: 0.8rem;
  line-height: 2;
  color: rgba(255, 255, 255, 0.6);
}

.footer-nav-list {
  display: flex;
  gap: 2.5rem;
}

.footer-nav-list a {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.7);
  transition: color 0.3s ease;
}

.footer-nav-list a:hover {
  color: var(--color-white);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 3vh;
}

.footer-copy {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.5);
}

.footer-links {
  display: flex;
  gap: 2rem;
}

.footer-links a {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  color: rgba(255, 255, 255, 0.5);
  transition: color 0.3s ease;
}

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

/* Back to Top */
.back-to-top {
  position: fixed;
  bottom: 3rem;
  right: 3rem;
  width: 50px;
  height: 50px;
  background: var(--color-primary);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.4s var(--ease-out-expo);
  z-index: 100;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--color-primary-dark);
}

/* ========================================
   RESPONSIVE STYLES
======================================== */
@media (max-width: 1200px) {
  :root {
    --container-padding: 6%;
  }
}

@media (max-width: 1024px) {
  .nav-main,
  .header-cta {
    display: none;
  }
  
  .nav-toggle {
    display: flex;
  }
  
  .message-inner {
    grid-template-columns: 1fr;
    gap: 6vh;
  }
  
  .message-visual {
    max-width: 500px;
    margin: 0 auto;
  }
  
  .service-inner {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .service-item:nth-child(even) .service-inner {
    direction: ltr;
  }
  
  .service-number-bg {
    font-size: 16rem;
    right: 0;
  }

  .works-grid {
    gap: 2rem;
  }
  
  .company-row {
    grid-template-columns: 140px 1fr;
    gap: 2rem;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 100px;
    --section-padding: 10vh;
  }
  
  .sp-only {
    display: block;
  }
  
  .logo-img {
    height: 80px;
  }
  
  .hero-content {
    padding: 2rem 2.5rem;
  }
  
  .hero-text-main,
  .hero-text-brand {
    letter-spacing: 0.08em;
  }
  
  .hero-text-multiply {
    width: 5vw;
    height: 5vw;
  }

  .hero-text-equals {
    width: 5vw;
    height: 5vw;
  }

  .hero-line-equals {
    margin: 0.5rem 0;
  }
  
  .hero-slide-nav {
    bottom: 3vh;
    right: 50%;
    transform: translateX(50%);
  }
  
  .hero-scroll-indicator {
    display: none;
  }
  
  .message-image-frame {
    display: none;
  }
  
  .service-number-bg {
    font-size: 10rem;
    right: 0;
  }

  /* Works 2 columns on tablet */
  .works-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }
  
  .news-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 2rem;
  }
  
  .news-item {
    grid-template-columns: 1fr;
    gap: 0.5rem;
    padding: 1.5rem 0;
  }
  
  .news-arrow {
    display: none;
  }
  
  .company-row {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }
  
  .form-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .footer-main {
    flex-direction: column;
    gap: 3rem;
  }
  
  .footer-nav-list {
    flex-wrap: wrap;
    gap: 1.5rem;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: 1.5rem;
    text-align: center;
  }
  
  .back-to-top {
    bottom: 1.5rem;
    right: 1.5rem;
    width: 44px;
    height: 44px;
  }
}

@media (max-width: 480px) {
  .hero-content {
    padding: 1.5rem 1rem;
    width: 95%;
    margin: 0 auto;
  }
  
  .hero-text-main,
  .hero-text-brand {
    font-size: 7.5vw;
    letter-spacing: 0.05em;
  }
  
  .hero-text-multiply {
    width: 12vw;
    height: 12vw;
  }

  .hero-text-equals {
    width: 10vw;
    height: 12vw;
    transform: none;
  }

  .hero-line-symbol {
    margin: 0.2rem 0 0.6rem 0;
  }

  .hero-line-equals {
    margin: 0.2rem 0 0.6rem 0;
  }

  .hero-text-symbol {
    line-height: 0;
    vertical-align: middle;
  }
  
  .section-title-large {
    font-size: 2rem;
  }
  
  .service-number-bg {
    font-size: 7rem;
    right: 0;
  }
  
  /* Works 1 column on mobile */
  .works-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  
  .work-card-image {
    aspect-ratio: 4/5;
  }
  
  .btn-submit {
    width: 100%;
  }
}