/* ============================================
   VARIABLES & RESET
   ============================================ */
:root {
  --black: #000000;
  --black-light: #050507;
  --black-card: #0a0a0f;
  --dark: #0e0e14;
  --gray-900: #181820;
  --gray-800: #28282e;
  --gray-700: #3a3a44;
  --gray-600: #707088;
  --gray-500: #9090a8;
  --gray-400: #b0b0c8;
  --gray-300: #d0d0e0;
  --gray-200: #e5e5eb;
  --gray-100: #f5f5f8;
  --white: #ffffff;
  --white-bg: #f8f8fc;
  --white-card: #ffffff;
  --white-border: #e2e2ec;
  --accent: #6366f1;
  --accent-light: #818cf8;
  --accent-dark: #4f46e5;
  --accent-glow: rgba(99, 102, 241, 0.4);
  --gradient-accent: linear-gradient(135deg, #6366f1, #a78bfa, #c084fc);
  --font-ja: 'Noto Sans JP', sans-serif;
  --font-en: 'Inter', sans-serif;
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
  --radius: 16px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  scrollbar-width: thin;
  scrollbar-color: var(--gray-300) var(--black);
}

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

a { text-decoration: none; color: inherit; transition: 0.3s var(--ease-out-expo); }
ul { list-style: none; }
img { max-width: 100%; display: block; }
strong { font-weight: 700; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
}

/* ============================================
   PAGE LOADER
   ============================================ */
.page-loader {
  position: fixed;
  inset: 0;
  background: var(--white);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}

.page-loader.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

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

.loader-logo {
  font-family: var(--font-en);
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 32px;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.loader-bar {
  width: 200px;
  height: 2px;
  background: var(--gray-200);
  border-radius: 2px;
  overflow: hidden;
}

.loader-progress {
  width: 0%;
  height: 100%;
  background: var(--gradient-accent);
  transition: width 0.3s ease;
}

/* ============================================
   HEADER — WHITE
   ============================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  padding: 0 48px;
  transition: 0.4s var(--ease-out-expo);
  mix-blend-mode: difference;
}

.header.scrolled {
  mix-blend-mode: normal;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--white-border);
  box-shadow: 0 1px 20px rgba(0,0,0,0.06);
}

.header.scrolled .logo-text {
  color: var(--black);
}

.header.scrolled .nav-list a {
  color: var(--black);
}

.header.scrolled .nav-list a::after {
  background: var(--black);
}

.header.scrolled .nav-contact-btn {
  background: var(--accent) !important;
  color: var(--white) !important;
}

.header.scrolled .hamburger span {
  background: var(--black);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
  max-width: 1400px;
  margin: 0 auto;
}

.logo-text {
  font-family: var(--font-en);
  font-size: 1.375rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--white);
}

.logo-img {
  height: 40px;
  width: auto;
  display: block;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-list a {
  font-family: var(--font-en);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--white);
  position: relative;
  padding: 4px 0;
}

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

.nav-list a:hover::after,
.nav-list a.nav-active::after {
  width: 100%;
}

.nav-list a.nav-active {
  opacity: 1;
}

.nav-contact-btn {
  background: var(--white) !important;
  color: var(--black) !important;
  padding: 10px 28px !important;
  border-radius: 100px;
  font-weight: 700 !important;
}

.nav-contact-btn::after { display: none !important; }

.nav-contact-btn:hover {
  background: var(--accent) !important;
  color: var(--white) !important;
  transform: translateY(-1px);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 7px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 200;
}

.hamburger span {
  display: block;
  width: 28px;
  height: 1.5px;
  background: var(--white);
  transition: 0.4s var(--ease-out-expo);
  border-radius: 2px;
}

/* Mobile Menu */
.mobile-menu {
  position: fixed;
  inset: 0;
  background: var(--white);
  z-index: 150;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: 0.5s var(--ease-out-expo);
}

.mobile-menu.open {
  opacity: 1;
  visibility: visible;
}

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

.mobile-nav-list li {
  margin-bottom: 24px;
}

.mobile-nav-list a {
  font-family: var(--font-en);
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--black);
  opacity: 0.7;
  transition: 0.3s;
}

.mobile-nav-list a:hover {
  opacity: 1;
  color: var(--accent);
}

/* ============================================
   HERO — DARK
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: var(--black);
}

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

.hero-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-photo-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(180deg, rgba(0,0,0,0.5) 0%, rgba(0,0,0,0.7) 50%, rgba(0,0,0,0.95) 100%),
    linear-gradient(90deg, rgba(0,0,0,0.8) 0%, transparent 50%);
}

.hero-grid-overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 60px 60px;
}

.hero-particles {
  position: absolute;
  inset: 0;
  z-index: 2;
  overflow: hidden;
}

.particle {
  position: absolute;
  width: 2px;
  height: 2px;
  background: rgba(255,255,255,0.4);
  border-radius: 50%;
  animation: float-particle linear infinite;
}

@keyframes float-particle {
  0% { transform: translateY(100vh) translateX(0); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translateY(-10vh) translateX(80px); opacity: 0; }
}

.hero-gradient-orbs, .cta-gradient-orbs {
  position: absolute;
  inset: 0;
  z-index: 2;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.4;
}

.orb-1 {
  width: 500px;
  height: 500px;
  background: rgba(99, 102, 241, 0.3);
  top: -10%;
  right: -5%;
  animation: orb-float 12s ease-in-out infinite;
}

.orb-2 {
  width: 400px;
  height: 400px;
  background: rgba(167, 139, 250, 0.2);
  bottom: -10%;
  left: -5%;
  animation: orb-float 15s ease-in-out infinite reverse;
}

.orb-3 {
  width: 300px;
  height: 300px;
  background: rgba(192, 132, 252, 0.15);
  top: 40%;
  left: 40%;
  animation: orb-float 10s ease-in-out infinite;
}

@keyframes orb-float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -20px) scale(1.05); }
  66% { transform: translate(-20px, 20px) scale(0.95); }
}

.hero-content {
  position: relative;
  z-index: 5;
  padding: 0 48px;
  max-width: 1000px;
}

.hero-lead-text {
  font-family: var(--font-en);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--accent-light);
  margin-bottom: 32px;
  text-transform: uppercase;
}

.hero-title {
  margin-bottom: 0;
}

.hero-line-wrap {
  display: block;
  overflow: hidden;
}

.hero-line {
  display: block;
  font-size: clamp(2.5rem, 6.5vw, 5rem);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--white);
  transform: translateY(100%);
}

.hero-line-gradient {
  color: var(--white);
}

.hero-line.revealed {
  transform: translateY(0);
  transition: transform 1s var(--ease-out-expo);
}

.hero-scroll-indicator {
  position: absolute;
  bottom: -140px;
  left: 0;
  display: flex;
  align-items: center;
  gap: 16px;
}

.scroll-text {
  font-family: var(--font-en);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--gray-500);
}

.scroll-line {
  width: 1px;
  height: 60px;
  background: var(--gray-800);
  position: relative;
  overflow: hidden;
}

.scroll-line-inner {
  width: 100%;
  height: 30px;
  background: var(--accent);
  animation: scroll-line-move 2s ease-in-out infinite;
}

@keyframes scroll-line-move {
  0% { transform: translateY(-100%); }
  100% { transform: translateY(200%); }
}

.hero-side-text {
  position: absolute;
  right: 48px;
  top: 50%;
  transform: translateY(-50%) rotate(90deg);
  transform-origin: center center;
  white-space: nowrap;
  z-index: 5;
}

.hero-side-text span {
  font-family: var(--font-en);
  font-size: 0.6875rem;
  letter-spacing: 0.15em;
  color: var(--gray-600);
  font-weight: 400;
}

/* Reveal animations */
.reveal-text {
  opacity: 0;
  transform: translateY(20px);
}

.reveal-text.revealed {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.8s var(--ease-out-expo), transform 0.8s var(--ease-out-expo);
}

.reveal-up {
  transform: translateY(100%);
}

.reveal-up.revealed {
  transform: translateY(0);
  transition: transform 1s var(--ease-out-expo);
}

/* ============================================
   MARQUEE SECTION — WHITE
   ============================================ */
.marquee-section {
  padding: 60px 0;
  background: var(--white-bg);
  overflow: hidden;
  border-top: 1px solid var(--white-border);
  border-bottom: 1px solid var(--white-border);
}

.marquee-track-wrapper {
  overflow: hidden;
}

.marquee-track {
  display: flex;
  white-space: nowrap;
  animation: marquee-scroll 25s linear infinite;
}

.marquee-forward {
  animation-direction: normal;
}

.marquee-track span {
  font-size: clamp(1.25rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--gray-200);
  letter-spacing: 0.15em;
  flex-shrink: 0;
}

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

/* ============================================
   MESSAGE SECTION — WHITE (PREMIUM)
   ============================================ */
.message-section {
  padding: 160px 0;
  background: var(--white-bg);
  position: relative;
  overflow: hidden;
}

.message-bg-grid {
  position: absolute;
  inset: 0;
  z-index: 1;
  background-image:
    linear-gradient(rgba(99,102,241,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99,102,241,0.03) 1px, transparent 1px);
  background-size: 80px 80px;
  pointer-events: none;
}

.message-bg-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 1;
}

.message-bg-orb-1 {
  width: 500px;
  height: 500px;
  background: rgba(99,102,241,0.06);
  top: -15%;
  right: -10%;
}

.message-bg-orb-2 {
  width: 350px;
  height: 350px;
  background: rgba(167,139,250,0.05);
  bottom: -10%;
  left: -5%;
}

.message-section > .container {
  position: relative;
  z-index: 5;
}

.message-header {
  margin-bottom: 64px;
}

.message-layout {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 64px;
  align-items: center;
}

.message-content {
  position: relative;
}

.message-headline {
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  font-weight: 900;
  line-height: 1.4;
  color: var(--black);
  letter-spacing: -0.02em;
  margin-top: 16px;
}

.message-headline-accent {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.message-body {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.message-lead p {
  font-size: clamp(1.0625rem, 2vw, 1.25rem);
  font-weight: 600;
  line-height: 2.2;
  color: var(--gray-700);
  letter-spacing: 0.03em;
  margin-bottom: 40px;
}

.message-core {
  position: relative;
  padding-left: 32px;
  margin-bottom: 40px;
}

.message-core-border {
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 3px;
  background: var(--gradient-accent);
  border-radius: 3px;
}

.message-core p {
  font-size: clamp(1.0625rem, 2vw, 1.25rem);
  font-weight: 500;
  line-height: 2.4;
  color: var(--gray-600);
  letter-spacing: 0.03em;
}

.message-gradient-text {
  font-weight: 700;
  background: linear-gradient(135deg, #6366f1, #a78bfa, #7c3aed);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.message-closing p {
  font-size: clamp(1rem, 1.8vw, 1.125rem);
  font-weight: 400;
  line-height: 2.2;
  color: var(--gray-500);
  letter-spacing: 0.03em;
}

/* Message Visual */
.message-visual {
  position: relative;
}

.message-photo-wrapper {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 30px 80px rgba(99,102,241,0.1), 0 8px 30px rgba(0,0,0,0.08);
}

.message-photo-wrapper::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 20px;
  border: 1px solid rgba(99,102,241,0.12);
  z-index: 2;
  pointer-events: none;
}

.message-photo {
  width: 100%;
  height: auto;
  display: block;
  aspect-ratio: 4/3;
  object-fit: cover;
}

.message-photo-sub {
  position: absolute;
  bottom: -32px;
  left: -40px;
  width: 55%;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0,0,0,0.15), 0 0 0 1px rgba(99,102,241,0.1);
  z-index: 3;
}

.message-photo-sub::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 16px;
  border: 3px solid var(--white-bg);
  z-index: 1;
  pointer-events: none;
}

.message-photo-sub-img {
  width: 100%;
  height: auto;
  display: block;
  aspect-ratio: 16/10;
  object-fit: cover;
}


/* ============================================
   SECTION COMMON
   ============================================ */
.section-header {
  margin-bottom: 80px;
}

.section-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 16px;
  padding: 6px 16px;
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: 100px;
}

.section-title-large {
  font-family: var(--font-en);
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1;
  color: var(--white);
}

/* Scroll animation */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s var(--ease-out-expo), transform 0.8s var(--ease-out-expo);
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   CARD STACKING ON SCROLL (XAION-style)
   ============================================ */
.fold-section {
  position: sticky;
  top: 0;
  margin-bottom: 140vh; /* scroll buffer — section pauses before next one covers it */
}

/* Last fold-section before footer */
.contact-section.fold-section {
  margin-bottom: 0;
}

/* Z-index layering — ALL sections in scroll order (consecutive stacking) */
.marquee-section               { position: relative; z-index: 2; }
.message-section.fold-section  { z-index: 3; }
.strength.fold-section         { z-index: 4; }
.demo-section.fold-section     { z-index: 5; }
.services.fold-section         { z-index: 6; }
.cta-section.fold-section      { z-index: 7; }
.company-section.fold-section  { z-index: 8; }
.contact-section.fold-section  { z-index: 9; }

/* Shadow overlay: darkens section as it gets covered by next section */
.fold-section > .fold-shadow {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0);
  pointer-events: none;
  z-index: 50;
}

/* ===== WHITE SECTION OVERRIDES ===== */
.section-light .section-title-large {
  color: var(--black);
}

.section-light .section-tag {
  color: var(--accent);
  border-color: rgba(99, 102, 241, 0.25);
  background: rgba(99, 102, 241, 0.05);
}

/* ============================================
   STRENGTH SECTION — DARK
   ============================================ */
.strength {
  padding: 160px 0;
  background: var(--black);
}

.strength-cards {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.strength-card {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 40px;
  padding: 64px 0;
  position: relative;
  align-items: start;
}

.strength-card-line {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--gray-800);
}

.strength-card:last-child .strength-card-line {
  display: none;
}

.strength-card-number {
  font-family: var(--font-en);
  font-size: 4rem;
  font-weight: 900;
  color: var(--gray-800);
  line-height: 1;
  letter-spacing: -0.03em;
  transition: 0.5s var(--ease-out-expo);
}

.strength-card:hover .strength-card-number {
  color: var(--accent);
}

.strength-card-title {
  font-size: 1.5rem;
  font-weight: 800;
  line-height: 1.5;
  margin-bottom: 20px;
  color: var(--white);
  letter-spacing: 0.02em;
}

.strength-card-desc {
  font-size: 0.9375rem;
  line-height: 2;
  color: var(--gray-500);
  max-width: 700px;
}

.strength-card-icon {
  width: 64px;
  height: 64px;
  flex-shrink: 0;
}

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

/* ============================================
   DEMO SECTION — WHITE
   ============================================ */
.demo-section {
  padding: 160px 0;
  background: var(--white-bg);
  overflow: hidden;
}

.demo-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 80px;
  align-items: center;
}

.demo-title {
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 900;
  line-height: 1.4;
  margin: 20px 0 24px;
  letter-spacing: -0.01em;
  color: var(--black);
}

.demo-desc {
  font-size: 1rem;
  color: var(--gray-600);
  line-height: 2;
  margin-bottom: 48px;
}

.demo-stats {
  display: flex;
  gap: 48px;
}

.demo-stat {
  display: flex;
  flex-direction: column;
}

.demo-stat-number {
  font-family: var(--font-en);
  font-size: 2.5rem;
  font-weight: 900;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
}

.demo-stat-unit {
  font-family: var(--font-en);
  font-size: 1.25rem;
  font-weight: 700;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.demo-stat-label {
  font-size: 0.75rem;
  color: var(--gray-600);
  margin-top: 8px;
  letter-spacing: 0.04em;
}

/* Demo Screen / Dashboard Mockup */
.demo-screen {
  background: var(--black-card);
  border: 1px solid var(--gray-800);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 40px 80px rgba(0, 0, 0, 0.25), 0 0 60px rgba(99, 102, 241, 0.06);
  transform: perspective(1200px) rotateY(-8deg) rotateX(2deg);
  transition: transform 0.6s var(--ease-out-expo);
}

.demo-screen:hover {
  transform: perspective(1200px) rotateY(-2deg) rotateX(0deg);
}

.demo-screen-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: rgba(255,255,255,0.03);
  border-bottom: 1px solid var(--gray-800);
}

.demo-dots {
  display: flex;
  gap: 6px;
}

.demo-dots span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gray-700);
}

.demo-dots span:first-child { background: #ef4444; }
.demo-dots span:nth-child(2) { background: #eab308; }
.demo-dots span:last-child { background: #22c55e; }

.demo-url {
  font-family: var(--font-en);
  font-size: 0.6875rem;
  color: var(--gray-600);
  background: var(--black);
  padding: 4px 12px;
  border-radius: 6px;
  flex-grow: 1;
  text-align: center;
}

.demo-screen-body {
  display: flex;
  min-height: 280px;
  position: relative;
  overflow: hidden;
}

.dash-sidebar {
  width: 48px;
  background: rgba(255,255,255,0.02);
  border-right: 1px solid var(--gray-800);
  padding: 12px 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.dash-logo {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-en);
  font-size: 0.5rem;
  font-weight: 800;
  color: white;
  margin-bottom: 12px;
}

.dash-menu-item {
  width: 24px;
  height: 24px;
  border-radius: 6px;
  background: rgba(255,255,255,0.04);
}

.dash-menu-item.active {
  background: rgba(99, 102, 241, 0.2);
  border: 1px solid rgba(99, 102, 241, 0.3);
}

.dash-main {
  flex: 1;
  padding: 16px;
  position: relative;
}

.dash-top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.dash-search {
  width: 120px;
  height: 24px;
  background: rgba(255,255,255,0.04);
  border-radius: 12px;
}

.dash-avatar {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), rgba(167,139,250,0.8));
}

.dash-cards-row {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.dash-mini-card {
  flex: 1;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--gray-800);
  border-radius: 8px;
  padding: 10px;
}

.dash-mini-label {
  font-family: var(--font-en);
  font-size: 0.5rem;
  color: var(--gray-600);
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}

.dash-mini-value {
  font-family: var(--font-en);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 8px;
}

.dash-mini-chart {
  height: 24px;
}

.dash-mini-chart svg {
  width: 100%;
  height: 100%;
}

.dash-chart-area {
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--gray-800);
  border-radius: 8px;
  padding: 12px;
}

.dash-chart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.dash-chart-header span {
  font-family: var(--font-en);
  font-size: 0.5625rem;
  color: var(--gray-500);
  letter-spacing: 0.04em;
}

.dash-chart-legend {
  display: flex;
  gap: 4px;
}

.legend-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.l1 { background: var(--accent); }
.l2 { background: rgba(167,139,250,0.7); }

.dash-chart-bars {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  height: 60px;
}

.dash-bar {
  flex: 1;
  background: linear-gradient(to top, rgba(99,102,241,0.3), rgba(99,102,241,0.6));
  border-radius: 3px 3px 0 0;
  height: var(--h, 50%);
  transform-origin: bottom;
  transform: scaleY(0);
  transition: transform 1.2s cubic-bezier(0.22, 1, 0.36, 1);
}

.demo-screen.in-view .dash-bar {
  transform: scaleY(1);
}

.dash-bar:nth-child(even) {
  background: linear-gradient(to top, rgba(167,139,250,0.2), rgba(167,139,250,0.5));
}

.dash-bar:nth-child(1) { transition-delay: 0.1s; }
.dash-bar:nth-child(2) { transition-delay: 0.2s; }
.dash-bar:nth-child(3) { transition-delay: 0.3s; }
.dash-bar:nth-child(4) { transition-delay: 0.4s; }
.dash-bar:nth-child(5) { transition-delay: 0.5s; }
.dash-bar:nth-child(6) { transition-delay: 0.6s; }
.dash-bar:nth-child(7) { transition-delay: 0.7s; }
.dash-bar:nth-child(8) { transition-delay: 0.8s; }

.dash-scan-line {
  position: absolute;
  top: 0;
  left: 48px;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(99,102,241,0.4), transparent);
  animation: scan 3s ease-in-out infinite;
}

@keyframes scan {
  0% { top: 0; opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { top: 100%; opacity: 0; }
}

/* ============================================
   SERVICES SECTION — DARK
   ============================================ */
.services {
  padding: 160px 0;
  background: var(--black);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--black-card);
  border: 1px solid var(--gray-800);
  border-radius: var(--radius);
  padding: 48px 40px;
  position: relative;
  overflow: hidden;
  transition: 0.5s var(--ease-out-expo);
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--gradient-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.6s var(--ease-out-expo);
}

.service-card:hover {
  border-color: rgba(99, 102, 241, 0.3);
  transform: translateY(-8px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4), 0 0 40px rgba(99, 102, 241, 0.08);
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-card-visual {
  height: 140px;
  margin: -48px -40px 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.02);
  border-bottom: 1px solid var(--gray-800);
  overflow: hidden;
}

.service-card-visual svg {
  width: 100%;
  max-width: 260px;
  height: auto;
}

.service-card-tag {
  font-family: var(--font-en);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--accent-light);
  margin-bottom: 24px;
}

.service-card-name {
  font-size: 1.75rem;
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: 0.01em;
  color: var(--white);
}

.service-card-catch {
  font-size: 1rem;
  font-weight: 600;
  color: var(--gray-300);
  line-height: 1.8;
  margin-bottom: 24px;
}

.service-card-divider {
  width: 40px;
  height: 1px;
  background: var(--gray-700);
  margin-bottom: 24px;
}

.service-card-desc {
  font-size: 0.875rem;
  line-height: 2;
  color: var(--gray-500);
}

.service-card-desc strong {
  color: var(--gray-300);
}

.service-card-arrow {
  position: absolute;
  top: 40px;
  right: 40px;
  color: var(--gray-700);
  transition: 0.4s var(--ease-out-expo);
}

.service-card:hover .service-card-arrow {
  color: var(--accent-light);
  transform: translate(4px, -4px);
}

/* ============================================
   CASES SECTION — WHITE
   ============================================ */
.cases {
  padding: 160px 0;
  background: var(--white-bg);
}

.cases .section-title-large {
  color: var(--black);
}

.cases .section-tag {
  color: var(--accent);
  border-color: rgba(99, 102, 241, 0.25);
  background: rgba(99, 102, 241, 0.05);
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.case-card {
  background: var(--white-card);
  border: 1px solid var(--white-border);
  border-radius: var(--radius);
  padding: 0;
  transition: 0.4s var(--ease-out-expo);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0,0,0,0.04);
}

.case-card-photo {
  width: 100%;
  height: 180px;
  overflow: hidden;
  position: relative;
}

.case-card-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-out-expo);
}

.case-card:hover .case-card-photo img {
  transform: scale(1.08);
}

.case-card-photo::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 50%;
  background: linear-gradient(to top, var(--white-card), transparent);
}

.case-card-body {
  padding: 28px 32px 36px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.case-card:hover {
  border-color: rgba(99, 102, 241, 0.3);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.08);
}

.case-card-badge {
  display: inline-block;
  font-family: var(--font-en);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--accent);
  background: rgba(99, 102, 241, 0.08);
  border: 1px solid rgba(99, 102, 241, 0.15);
  padding: 4px 14px;
  border-radius: 100px;
  margin-bottom: 24px;
  align-self: flex-start;
}

.case-card-title {
  font-size: 1.0625rem;
  font-weight: 600;
  line-height: 1.8;
  color: var(--gray-700);
  flex-grow: 1;
  margin-bottom: 20px;
}

.case-card-title .highlight {
  font-family: var(--font-en);
  font-weight: 800;
  font-size: 1.5rem;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.case-card-status {
  font-size: 0.8125rem;
  color: var(--gray-500);
}

.case-card-subtitle {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--gray-500);
  letter-spacing: 0.02em;
}

/* Toggle Button */
.case-toggle-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-ja);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--accent);
  background: none;
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: 100px;
  padding: 8px 18px;
  cursor: pointer;
  transition: 0.3s var(--ease-out-expo);
  margin-top: 4px;
}

.case-toggle-btn:hover {
  background: rgba(99, 102, 241, 0.08);
  border-color: rgba(99, 102, 241, 0.4);
}

.case-toggle-btn svg {
  transition: transform 0.3s var(--ease-out-expo);
}

.case-toggle-btn.open svg {
  transform: rotate(180deg);
}

/* Hidden detail section */
.case-card-detail {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s var(--ease-out-expo), opacity 0.4s ease, margin 0.4s ease;
  opacity: 0;
  margin-top: 0;
}

.case-card-detail.open {
  max-height: 400px;
  opacity: 1;
  margin-top: 20px;
}

.case-card-quote {
  font-size: 0.875rem;
  line-height: 2;
  color: var(--gray-600);
  margin: 0 0 16px;
  padding: 20px 24px;
  background: var(--gray-100);
  border-radius: 12px;
  border-left: 3px solid var(--accent);
  font-style: normal;
}

.case-card-source {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--gray-500);
  letter-spacing: 0.02em;
}

/* ============================================
   CTA SECTION — DARK
   ============================================ */
.cta-section {
  position: relative;
  padding: 200px 0;
  overflow: hidden;
}

.cta-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #000000, #080818, #000010);
}

.cta-photo-bg {
  position: absolute;
  inset: 0;
}

.cta-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.2;
}

.cta-photo-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0,0,0,0.9), rgba(5,5,30,0.85), rgba(0,0,20,0.9));
}

.cta-grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 80px 80px;
}

.cta-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.cta-tag {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--accent-light);
  letter-spacing: 0.08em;
  margin-bottom: 32px;
}

.cta-title {
  font-size: clamp(2rem, 4.5vw, 3rem);
  font-weight: 900;
  line-height: 1.4;
  margin-bottom: 32px;
  letter-spacing: -0.01em;
  color: var(--white);
}

.cta-desc {
  font-size: 1rem;
  line-height: 2;
  color: var(--gray-400);
  margin-bottom: 48px;
}

.cta-desc strong {
  color: rgba(255, 255, 255, 0.9);
}

.cta-buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-cta {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-ja);
  font-size: 0.9375rem;
  font-weight: 600;
  padding: 18px 36px;
  border-radius: 100px;
  transition: 0.4s var(--ease-out-expo);
  letter-spacing: 0.02em;
}

.btn-cta-primary {
  background: var(--white);
  color: var(--black);
}

.btn-cta-primary:hover {
  background: var(--accent);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(99, 102, 241, 0.4);
}

.btn-cta-outline {
  background: transparent;
  color: var(--white);
  border: 1px solid var(--gray-700);
}

.btn-cta-outline:hover {
  border-color: var(--accent);
  color: var(--accent-light);
  transform: translateY(-2px);
}

/* ============================================
   COMPANY SECTION — WHITE
   ============================================ */
.company-section {
  padding: 160px 0;
  background: var(--white-bg);
}

.company-section .section-title-large {
  color: var(--black);
}

.company-section .section-tag {
  color: var(--accent);
  border-color: rgba(99, 102, 241, 0.25);
  background: rgba(99, 102, 241, 0.05);
}

.company-table-wrap {
  border: 1px solid var(--white-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0,0,0,0.04);
}

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

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

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

.company-table th,
.company-table td {
  padding: 28px 32px;
  text-align: left;
  font-size: 0.9375rem;
  vertical-align: top;
}

.company-table th {
  font-weight: 700;
  color: var(--black);
  width: 160px;
  background: var(--gray-100);
  font-family: var(--font-ja);
}

.company-table td {
  color: var(--gray-600);
  background: var(--white-card);
}

.company-table td a {
  color: var(--accent);
}

.company-table td a:hover {
  color: var(--accent-dark);
}

.vision-block {
  margin-top: 80px;
}

.vision-inner {
  background: var(--black-card);
  border: 1px solid var(--gray-800);
  border-radius: var(--radius);
  padding: 0;
  position: relative;
  overflow: hidden;
  min-height: 320px;
}

.vision-photo-bg {
  position: absolute;
  inset: 0;
}

.vision-bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.15;
}

.vision-content-wrapper {
  position: relative;
  z-index: 1;
  padding: 64px 56px;
  background: linear-gradient(90deg, rgba(0,0,0,0.95) 0%, rgba(0,0,0,0.7) 60%, rgba(0,0,0,0.4) 100%);
}

.vision-inner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--gradient-accent);
  z-index: 2;
}

.vision-label {
  font-family: var(--font-en);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--accent-light);
  margin-bottom: 20px;
}

.vision-title {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 24px;
  color: var(--white);
}

.vision-desc {
  font-size: 0.9375rem;
  line-height: 2.2;
  color: var(--gray-500);
  max-width: 700px;
}

/* ============================================
   CONTACT SECTION — LIGHT
   ============================================ */
.contact-section {
  padding: 160px 0;
  background: var(--white-bg);
}

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

.contact-section .section-tag {
  color: var(--accent);
  border-color: rgba(99, 102, 241, 0.25);
  background: rgba(99, 102, 241, 0.05);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.contact-info-title {
  font-size: 1.75rem;
  font-weight: 800;
  line-height: 1.6;
  margin-bottom: 24px;
  color: var(--black);
}

.contact-info-desc {
  font-size: 0.9375rem;
  color: var(--gray-600);
  line-height: 2;
  margin-bottom: 48px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.contact-detail-label {
  display: block;
  font-family: var(--font-en);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: 8px;
}

.contact-detail-item a,
.contact-detail-item p {
  font-size: 0.9375rem;
  color: var(--gray-600);
  line-height: 1.8;
}

.contact-detail-item a:hover {
  color: var(--black);
}

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

.form-group label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--gray-600);
  margin-bottom: 10px;
  letter-spacing: 0.02em;
}

.form-group .required {
  color: var(--accent);
  font-size: 0.75rem;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 16px 20px;
  font-family: var(--font-ja);
  font-size: 0.9375rem;
  color: var(--black);
  background: var(--white-card);
  border: 1px solid var(--white-border);
  border-radius: 12px;
  transition: 0.3s var(--ease-out-expo);
  outline: none;
}

.form-group select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%239ca3af' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 20px center;
  padding-right: 48px;
  cursor: pointer;
}

.form-group select:invalid {
  color: var(--gray-400);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--gray-400);
}

.form-group textarea {
  resize: vertical;
  min-height: 140px;
}

.btn-submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  width: 100%;
  padding: 18px;
  font-family: var(--font-ja);
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--white);
  background: var(--accent);
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition: 0.4s var(--ease-out-expo);
  letter-spacing: 0.04em;
}

.btn-submit:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(99, 102, 241, 0.3);
}

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

/* Form Success Message */
.form-success {
  display: none;
  text-align: center;
  padding: 48px 24px;
}

.form-success.active {
  display: block;
  animation: fadeInUp 0.6s ease-out;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

.form-success-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 24px;
  border-radius: 50%;
  background: rgba(52, 211, 153, 0.1);
  border: 2px solid rgba(52, 211, 153, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #34d399;
}

.form-success-title {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--black);
  margin-bottom: 16px;
}

.form-success-message {
  font-size: 0.9375rem;
  color: var(--gray-600);
  line-height: 2;
  margin-bottom: 24px;
}

.form-success-message strong {
  color: var(--accent);
}

.form-success-note {
  font-size: 0.8125rem;
  color: var(--gray-400);
  line-height: 1.8;
}

.form-success-note a {
  color: var(--accent);
}

.form-success-note a:hover {
  text-decoration: underline;
}

/* ============================================
   FOOTER — WHITE
   ============================================ */
.footer {
  background: var(--white);
  border-top: 1px solid var(--white-border);
  position: relative;
  z-index: 50;
}

.footer-marquee {
  overflow: hidden;
  padding: 40px 0;
  border-bottom: 1px solid var(--white-border);
}

.footer-marquee-track {
  display: flex;
  gap: 32px;
  animation: footer-marquee 20s linear infinite;
  white-space: nowrap;
  width: max-content;
}

.footer-marquee-track span {
  font-family: var(--font-en);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 900;
  color: var(--gray-200);
  letter-spacing: -0.03em;
}

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

.footer-main {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 60px;
  padding: 80px 0 60px;
}

.footer-logo {
  font-family: var(--font-en);
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--black);
}

.footer-logo-img {
  height: 48px;
  width: auto;
  display: block;
  margin-bottom: 8px;
}

.footer-brand-desc {
  font-family: var(--font-en);
  font-size: 0.75rem;
  color: var(--gray-500);
  letter-spacing: 0.1em;
  margin-top: 8px;
}

.footer-links-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.footer-col h4 {
  font-family: var(--font-en);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--black);
  margin-bottom: 20px;
}

.footer-col li {
  margin-bottom: 12px;
}

.footer-col a {
  font-size: 0.8125rem;
  color: var(--gray-600);
}

.footer-col a:hover {
  color: var(--accent);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 32px 0;
  border-top: 1px solid var(--white-border);
}

.footer-bottom p {
  font-size: 0.75rem;
  color: var(--gray-500);
}

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

.footer-bottom-links a {
  font-size: 0.6875rem;
  color: var(--gray-500);
}

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

/* ============================================
   HERO NETWORK VISUAL
   ============================================ */
.hero-network-visual {
  position: absolute;
  right: -5%;
  top: 50%;
  transform: translateY(-50%);
  width: 55%;
  max-width: 700px;
  opacity: 0.6;
  pointer-events: none;
  z-index: 3;
}

.network-svg {
  width: 100%;
  height: auto;
}

.net-line {
  stroke-dasharray: 200;
  stroke-dashoffset: 200;
  animation: draw-line 2s ease forwards;
}

.nl-1 { animation-delay: 0.5s; }
.nl-2 { animation-delay: 0.6s; }
.nl-3 { animation-delay: 0.7s; }
.nl-4 { animation-delay: 0.8s; }
.nl-5 { animation-delay: 0.9s; }
.nl-6 { animation-delay: 1.0s; }
.nl-7 { animation-delay: 1.1s; }
.nl-8 { animation-delay: 1.2s; }
.nl-9 { animation-delay: 1.3s; }
.nl-10 { animation-delay: 1.4s; }
.nl-11 { animation-delay: 1.5s; }
.nl-12 { animation-delay: 1.6s; }

@keyframes draw-line {
  to { stroke-dashoffset: 0; }
}

.node-outer {
  animation: node-pulse 3s ease-in-out infinite;
}

@keyframes node-pulse {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; }
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .strength-card {
    grid-template-columns: 64px 1fr;
    gap: 32px;
  }

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

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

  .demo-layout {
    grid-template-columns: 1fr;
    gap: 60px;
  }

  .demo-screen {
    transform: none;
  }

  .demo-screen:hover {
    transform: none;
  }

  .hero-network-visual {
    width: 70%;
    opacity: 0.3;
    right: -15%;
  }
}

@media (max-width: 768px) {
  /* --- Disable fold/sticky stacking on mobile --- */
  .fold-section {
    position: relative;
    top: 0 !important;
    margin-bottom: 0;
  }

  .fold-section > .fold-shadow {
    display: none;
  }

  /* --- Header --- */
  .header {
    padding: 0 20px;
    mix-blend-mode: normal;
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(32px);
    -webkit-backdrop-filter: blur(32px);
    border-bottom: 1px solid var(--white-border);
  }

  .header .logo-text {
    color: var(--black);
    font-size: 1.5rem;
  }

  .header .nav-list a {
    color: var(--black);
  }

  .header .hamburger span {
    background: var(--black);
  }

  .header-inner {
    height: 64px;
  }

  .nav { display: none; }
  .hamburger { display: flex; }

  .hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
  }
  .hamburger.active span:nth-child(2) { opacity: 0; }
  .hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
  }

  /* --- Mobile Menu --- */
  .mobile-nav-list a {
    font-family: var(--font-ja);
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: 0.04em;
  }

  .mobile-nav-list li {
    margin-bottom: 28px;
  }

  /* --- Hero --- */
  .hero {
    min-height: 100svh;
  }

  .hero-content {
    padding: 0 24px;
  }

  .hero-side-text { display: none; }

  .hero-line {
    font-size: clamp(2.25rem, 10vw, 3.5rem);
    font-weight: 900;
    letter-spacing: -0.02em;
  }

  .hero-lead-text {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 28px;
    letter-spacing: 0.01em;
    line-height: 1.8;
  }

  .hero-network-visual {
    display: none;
  }

  .hero-scroll-indicator {
    bottom: -80px;
  }

  .scroll-text {
    font-size: 0.75rem;
    letter-spacing: 0.2em;
  }

  /* --- Section Titles --- */
  .section-title-large {
    font-size: clamp(2.5rem, 13vw, 4rem);
    font-weight: 900;
    letter-spacing: -0.03em;
  }

  .section-header {
    margin-bottom: 56px;
  }

  .section-tag {
    font-size: 0.875rem;
    font-weight: 700;
    padding: 8px 18px;
    letter-spacing: 0.06em;
  }

  /* --- Section Spacing (generous = premium) --- */
  .strength,
  .services,
  .company-section,
  .contact-section {
    padding: 96px 0;
  }

  .message-section,
  .demo-section {
    padding: 96px 0;
  }

  .cta-section {
    padding: 100px 0;
  }

  /* --- Marquee --- */
  .marquee-section {
    padding: 36px 0;
  }

  .marquee-track span {
    font-size: 1rem;
  }

  /* --- Message Section --- */
  .message-section {
    padding: 96px 0;
  }

  .message-headline {
    font-size: 2rem;
    font-weight: 900;
    letter-spacing: -0.02em;
  }

  .message-header {
    margin-bottom: 48px;
  }

  .message-lead p {
    font-size: 1.125rem;
    font-weight: 500;
    line-height: 2.2;
    margin-bottom: 36px;
  }

  .message-core {
    padding-left: 28px;
    margin-bottom: 36px;
    border-left-width: 3px;
  }

  .message-core p {
    font-size: 1.125rem;
    font-weight: 600;
    line-height: 2.2;
  }

  .message-gradient-text {
    font-weight: 700;
  }

  .message-closing p {
    font-size: 1.0625rem;
    font-weight: 500;
    line-height: 2;
  }

  .message-bg-orb-1 {
    width: 300px;
    height: 300px;
  }

  .message-bg-orb-2 {
    width: 200px;
    height: 200px;
  }

  .message-layout {
    grid-template-columns: 1fr;
    gap: 56px;
  }

  .message-visual {
    max-width: 100%;
  }

  .message-photo-sub {
    bottom: -24px;
    left: -12px;
    width: 50%;
  }

  .message-photo-wrapper {
    border-radius: 20px;
    box-shadow: 0 24px 60px rgba(99,102,241,0.12), 0 8px 24px rgba(0,0,0,0.08);
  }

  .message-photo-sub {
    border-radius: 16px;
  }

  /* --- Strength Cards --- */
  .strength-card {
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 40px 0;
  }

  .strength-card-icon {
    width: 56px;
    height: 56px;
  }

  .strength-card-number {
    font-size: 2.5rem;
    font-weight: 900;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
  }

  .strength-card-title {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: -0.01em;
  }

  .strength-card-desc {
    font-size: 1.0625rem;
    font-weight: 500;
    line-height: 2.2;
    color: var(--gray-400);
  }

  .strength-card-line {
    height: 2px;
  }

  /* --- Service Cards --- */
  .services-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .service-card {
    padding: 36px 28px;
    border-radius: 20px;
  }

  .service-card-visual {
    margin: -36px -28px 24px;
    height: 120px;
    border-radius: 20px 20px 0 0;
  }

  .service-card-name {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 14px;
    letter-spacing: -0.01em;
  }

  .service-card-catch {
    font-size: 1.0625rem;
    font-weight: 600;
    margin-bottom: 20px;
    line-height: 1.8;
  }

  .service-card-desc {
    font-size: 1rem;
    font-weight: 500;
    line-height: 2.2;
  }

  .service-card-tag {
    font-size: 0.8125rem;
    font-weight: 700;
    margin-bottom: 18px;
    letter-spacing: 0.12em;
  }

  .service-card-divider {
    margin: 20px 0;
  }

  .service-card-arrow {
    top: 28px;
    right: 28px;
  }

  .service-card-arrow svg {
    width: 28px;
    height: 28px;
  }

  /* --- Demo Section --- */
  .demo-title {
    font-size: 2rem;
    font-weight: 900;
    letter-spacing: -0.02em;
  }

  .demo-desc {
    font-size: 1.0625rem;
    font-weight: 500;
    margin-bottom: 40px;
    line-height: 2;
  }

  .demo-screen {
    transform: none;
    border-radius: 16px;
  }

  .demo-screen:hover {
    transform: none;
  }

  .demo-stats {
    gap: 28px;
  }

  .demo-stat-number {
    font-size: 2.25rem;
    font-weight: 800;
  }

  /* --- CTA --- */
  .cta-tag {
    font-size: 0.875rem;
    font-weight: 700;
  }

  .cta-title {
    font-size: 2rem;
    font-weight: 900;
    letter-spacing: -0.02em;
    line-height: 1.5;
  }

  .cta-desc {
    font-size: 1.0625rem;
    font-weight: 500;
    margin-bottom: 40px;
    line-height: 2;
  }

  .cta-buttons {
    flex-direction: column;
    gap: 12px;
  }

  .btn-cta {
    justify-content: center;
    width: 100%;
    padding: 20px 28px;
    font-size: 1.0625rem;
    font-weight: 700;
    border-radius: 14px;
    letter-spacing: 0.02em;
  }

  /* --- Company Table --- */
  .company-table-wrap {
    border-radius: 16px;
  }

  .company-table th {
    width: 90px;
    font-size: 1rem;
    font-weight: 700;
  }

  .company-table td {
    font-size: 1rem;
    font-weight: 500;
  }

  .company-table th,
  .company-table td {
    padding: 20px 18px;
  }

  .vision-block {
    margin-top: 56px;
  }

  .vision-inner {
    border-radius: 20px;
  }

  .vision-content-wrapper {
    padding: 36px 28px;
  }

  .vision-title {
    font-size: 1.5rem;
    font-weight: 800;
  }

  .vision-desc {
    font-size: 1.0625rem;
    font-weight: 500;
    line-height: 2.2;
  }

  /* --- Contact --- */
  .contact-grid {
    gap: 56px;
  }

  .contact-info-title {
    font-size: 1.75rem;
    font-weight: 900;
    letter-spacing: -0.02em;
    line-height: 1.6;
  }

  .contact-info-desc {
    font-size: 1.0625rem;
    font-weight: 500;
    margin-bottom: 40px;
    line-height: 2;
  }

  .contact-detail-label {
    font-size: 0.8125rem;
    font-weight: 700;
    letter-spacing: 0.15em;
  }

  .contact-detail-item a,
  .contact-detail-item p {
    font-size: 1rem;
    font-weight: 500;
  }

  .contact-form {
    gap: 28px;
  }

  .form-group label {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 12px;
  }

  .form-group input,
  .form-group textarea,
  .form-group select {
    padding: 18px 20px;
    font-size: 1.0625rem;
    border-radius: 14px;
  }

  .form-group textarea {
    min-height: 160px;
  }

  .btn-submit {
    padding: 20px;
    font-size: 1.0625rem;
    font-weight: 700;
    border-radius: 14px;
    letter-spacing: 0.04em;
  }

  /* --- Footer --- */
  .footer-main {
    grid-template-columns: 1fr;
    gap: 40px;
    padding: 56px 0 36px;
  }

  .footer-logo {
    font-size: 1.75rem;
  }

  .footer-brand-desc {
    font-size: 0.875rem;
  }

  .footer-links-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .footer-col h4 {
    font-size: 0.8125rem;
    margin-bottom: 16px;
  }

  .footer-col li a {
    font-size: 0.9375rem;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 14px;
    align-items: flex-start;
    padding: 28px 0;
  }

  /* =============================================
     MOBILE PREMIUM ENHANCEMENTS
     ============================================= */

  /* Hero - immersive full screen with breathing room */
  .hero-content {
    gap: 24px;
  }

  .hero-line-wrap {
    margin-bottom: 4px;
  }

  .hero-photo {
    border-radius: 20px;
  }

  /* Premium card shadows & borders */
  .service-card,
  .about-strength-card,
  .business-card {
    box-shadow: 0 4px 32px rgba(99,102,241,0.06), 0 1px 4px rgba(0,0,0,0.04);
    border: 1px solid rgba(99,102,241,0.08);
    transition: transform 0.4s var(--ease-out-expo), box-shadow 0.4s var(--ease-out-expo);
  }

  /* Strength section: premium dividers */
  .strength-card + .strength-card {
    border-top: 1px solid rgba(99,102,241,0.1);
  }

  .strength-card-body {
    gap: 12px;
  }

  /* Section tags: glassmorphism pill */
  .section-tag {
    background: rgba(99,102,241,0.06);
    border: 1px solid rgba(99,102,241,0.12);
    border-radius: 100px;
    backdrop-filter: blur(8px);
  }

  /* CTA: dramatic gradient border + glow */
  .cta-section {
    border-radius: 24px;
    overflow: hidden;
  }

  .cta-photo {
    border-radius: 16px;
  }

  .btn-cta-primary {
    box-shadow: 0 8px 32px rgba(99,102,241,0.3), 0 2px 8px rgba(99,102,241,0.2);
    position: relative;
  }

  /* Contact form: premium inputs */
  .form-group input:focus,
  .form-group textarea:focus,
  .form-group select:focus {
    box-shadow: 0 0 0 3px rgba(99,102,241,0.12);
  }

  .btn-submit {
    box-shadow: 0 8px 32px rgba(99,102,241,0.25);
    transition: transform 0.3s var(--ease-out-expo), box-shadow 0.3s var(--ease-out-expo);
  }

  /* Vision block: elevated card */
  .vision-inner {
    box-shadow: 0 12px 48px rgba(0,0,0,0.08), 0 2px 8px rgba(0,0,0,0.04);
  }

  /* Company table: refined borders */
  .company-table-wrap {
    box-shadow: 0 4px 24px rgba(0,0,0,0.04);
  }

  /* Demo section */
  .demo-screen {
    box-shadow: 0 16px 48px rgba(0,0,0,0.12);
  }

  .demo-stat {
    text-align: center;
  }

  /* Footer premium touch */
  .footer {
    border-top: 1px solid var(--gray-800);
  }

  .footer-logo {
    letter-spacing: -0.02em;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 20px;
  }

  /* --- Hero (480) --- */
  .hero-content {
    padding: 0 20px;
  }

  .hero-line {
    font-size: clamp(2rem, 9.5vw, 2.75rem);
    font-weight: 900;
    letter-spacing: -0.02em;
  }

  .hero-lead-text {
    font-size: 0.9375rem;
    font-weight: 600;
    letter-spacing: 0.01em;
    line-height: 1.9;
  }

  /* --- Sections (480) --- */
  .section-title-large {
    font-size: clamp(2.25rem, 12vw, 3rem);
    font-weight: 900;
    letter-spacing: -0.03em;
  }

  .section-tag {
    font-size: 0.8125rem;
    font-weight: 700;
  }

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

  .strength,
  .services,
  .company-section,
  .contact-section,
  .message-section,
  .demo-section {
    padding: 80px 0;
  }

  .cta-section {
    padding: 88px 0;
  }

  /* --- Message (480) --- */
  .message-section {
    padding: 80px 0;
  }

  .message-headline {
    font-size: 1.75rem;
    font-weight: 900;
  }

  .message-lead p,
  .message-core p {
    font-size: 1.0625rem;
    font-weight: 500;
    line-height: 2.2;
  }

  .message-core {
    padding-left: 24px;
  }

  .message-photo-sub {
    width: 48%;
    bottom: -16px;
    left: -8px;
  }

  .message-photo-wrapper {
    border-radius: 16px;
  }

  /* --- Strength (480) --- */
  .strength-card {
    padding: 36px 0;
  }

  .strength-card-number {
    font-size: 2.25rem;
  }

  .strength-card-title {
    font-size: 1.375rem;
    font-weight: 800;
  }

  .strength-card-desc {
    font-size: 1rem;
    line-height: 2.2;
  }

  /* --- Service Cards (480) --- */
  .service-card {
    padding: 32px 24px;
    border-radius: 18px;
  }

  .service-card-visual {
    margin: -32px -24px 20px;
    height: 110px;
    border-radius: 18px 18px 0 0;
  }

  .service-card-name {
    font-size: 1.375rem;
    font-weight: 800;
  }

  .service-card-catch {
    font-size: 1rem;
  }

  .service-card-desc {
    font-size: 0.9375rem;
    line-height: 2.2;
  }

  /* --- Demo (480) --- */
  .demo-title {
    font-size: 1.75rem;
    font-weight: 900;
  }

  .demo-desc {
    font-size: 1rem;
    line-height: 2;
  }

  .demo-stat-number {
    font-size: 2rem;
  }

  /* --- CTA (480) --- */
  .cta-title {
    font-size: 1.75rem;
    font-weight: 900;
    line-height: 1.5;
  }

  .cta-desc {
    font-size: 1rem;
    line-height: 2;
  }

  .btn-cta {
    padding: 18px 24px;
    font-size: 1rem;
    border-radius: 14px;
  }

  /* --- Company (480) --- */
  .company-table th {
    font-size: 0.9375rem;
  }

  .company-table td {
    font-size: 0.9375rem;
  }

  .vision-content-wrapper {
    padding: 32px 24px;
  }

  .vision-title {
    font-size: 1.375rem;
  }

  .vision-desc {
    font-size: 1rem;
    line-height: 2.2;
  }

  /* --- Contact (480) --- */
  .contact-info-title {
    font-size: 1.5rem;
    font-weight: 900;
    line-height: 1.6;
  }

  .contact-info-desc {
    font-size: 1rem;
    line-height: 2;
  }

  .form-group label {
    font-size: 0.9375rem;
    font-weight: 700;
  }

  .form-group input,
  .form-group textarea,
  .form-group select {
    padding: 16px 18px;
    font-size: 1rem;
    border-radius: 12px;
  }

  .btn-submit {
    padding: 18px;
    font-size: 1rem;
    border-radius: 12px;
  }

  /* --- Mobile Nav (480) --- */
  .mobile-nav-list a {
    font-size: 1.375rem;
    font-weight: 800;
  }

  /* --- Footer (480) --- */
  .footer-links-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-main {
    padding: 48px 0 32px;
  }

  .case-card-photo {
    height: 120px;
  }
}