/*
Theme Name: occur Corporate
Theme URI: https://occur.co.jp
Author: occur,LLC
Author URI: https://occur.co.jp
Description: occur,LLC corporate website theme - AI-powered business improvement company
Version: 1.0.0
License: Proprietary
License URI: https://occur.co.jp
Text Domain: occur
*/

/* ========================================
   CSS Variables / Design Tokens
   ======================================== */
:root {
  /* Colors */
  --color-black: #0a0a0a;
  --color-dark: #111111;
  --color-dark-gray: #1a1a1a;
  --color-gray: #333333;
  --color-mid-gray: #666666;
  --color-light-gray: #999999;
  --color-border: #222222;
  --color-white: #ffffff;
  --color-off-white: #f5f5f5;
  --color-accent: #e0e0e0;
  --color-highlight: #ffffff;

  /* Typography */
  --font-en: 'Inter', 'Helvetica Neue', Arial, sans-serif;
  --font-ja: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', 'Yu Gothic', sans-serif;
  --font-display: 'Inter', var(--font-ja);

  /* Spacing */
  --section-padding: clamp(80px, 12vw, 160px);
  --container-width: 1200px;
  --container-padding: clamp(20px, 5vw, 60px);

  /* Transitions */
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
  --transition-base: 0.4s var(--ease-out-expo);
  --transition-slow: 0.8s var(--ease-out-expo);
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: auto; /* Lenis handles smooth scroll */
}

html.lenis,
html.lenis body {
  height: auto;
}

.lenis.lenis-smooth {
  scroll-behavior: auto !important;
}

.lenis.lenis-smooth [data-lenis-prevent] {
  overscroll-behavior: contain;
}

.lenis.lenis-stopped {
  overflow: hidden;
}

body {
  font-family: var(--font-ja);
  font-weight: 400;
  line-height: 1.8;
  color: var(--color-white);
  background-color: var(--color-black);
  overflow-x: hidden;
}

html {
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
  transition: opacity var(--transition-base);
}

a:hover {
  opacity: 0.7;
}

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

ul, ol {
  list-style: none;
}

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

/* ========================================
   Utility Classes
   ======================================== */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Reveal animation classes */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s var(--ease-out-expo), transform 0.8s var(--ease-out-expo);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

.reveal-left {
  opacity: 0;
  transform: translateX(-60px);
  transition: opacity 0.8s var(--ease-out-expo), transform 0.8s var(--ease-out-expo);
}

.reveal-left.is-visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(60px);
  transition: opacity 0.8s var(--ease-out-expo), transform 0.8s var(--ease-out-expo);
}

.reveal-right.is-visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 0.8s var(--ease-out-expo), transform 0.8s var(--ease-out-expo);
}

.reveal-scale.is-visible {
  opacity: 1;
  transform: scale(1);
}

/* ========================================
   Typography
   ======================================== */
.heading-xl {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.heading-lg {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.heading-md {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.heading-sm {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2vw, 1.75rem);
  font-weight: 600;
  line-height: 1.4;
}

.text-lg {
  font-size: clamp(1rem, 1.5vw, 1.25rem);
  line-height: 1.8;
}

.text-sm {
  font-size: 0.875rem;
  line-height: 1.6;
}

.text-xs {
  font-size: 0.75rem;
  line-height: 1.5;
  color: var(--color-light-gray);
}

.text-en {
  font-family: var(--font-en);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.text-center { text-align: center; }
.text-muted { color: var(--color-light-gray); }

/* Section label */
.section-label {
  font-family: var(--font-en);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-light-gray);
  margin-bottom: 1.5rem;
  display: inline-block;
  position: relative;
  padding-left: 40px;
}

.section-label::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 24px;
  height: 1px;
  background-color: var(--color-light-gray);
}

/* ========================================
   Buttons
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 16px 40px;
  font-family: var(--font-en);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: 1px solid var(--color-white);
  border-radius: 0;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--color-white);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.5s var(--ease-out-expo);
  z-index: 0;
}

.btn:hover {
  opacity: 1;
  color: var(--color-black);
}

.btn:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.btn span {
  position: relative;
  z-index: 1;
}

.btn-arrow {
  width: 24px;
  height: 1px;
  background-color: currentColor;
  position: relative;
  z-index: 1;
  transition: width 0.4s var(--ease-out-expo);
}

.btn-arrow::after {
  content: '';
  position: absolute;
  right: 0;
  top: -3px;
  width: 8px;
  height: 8px;
  border-top: 1px solid currentColor;
  border-right: 1px solid currentColor;
  transform: rotate(45deg);
}

.btn:hover .btn-arrow {
  width: 32px;
}

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

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

.btn-primary:hover {
  color: var(--color-white);
}

.btn-sm {
  padding: 10px 24px;
  font-size: 0.8rem;
}

/* ========================================
   Header / Navigation
   ======================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 0 var(--container-padding);
  transition: background-color 0.4s ease, backdrop-filter 0.4s ease;
}

.site-header.is-scrolled {
  background-color: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

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

.site-logo {
  display: flex;
  align-items: center;
}

.site-logo img {
  height: 28px;
  width: auto;
  display: block;
}

.nav-desktop {
  display: flex;
  align-items: center;
  gap: 40px;
}

.nav-desktop a {
  font-family: var(--font-en);
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  position: relative;
}

.nav-desktop a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--color-white);
  transition: width 0.4s var(--ease-out-expo);
}

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

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

.nav-contact-btn {
  padding: 8px 24px !important;
  border: 1px solid rgba(255, 255, 255, 0.3) !important;
  transition: all var(--transition-base) !important;
}

.nav-contact-btn:hover {
  border-color: var(--color-white) !important;
  background-color: var(--color-white) !important;
  color: var(--color-black) !important;
}

/* Hamburger Menu */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 6px;
  width: 32px;
  height: 32px;
  justify-content: center;
  align-items: center;
  z-index: 1010;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 1px;
  background-color: var(--color-white);
  transition: all 0.3s ease;
}

.hamburger.is-active span:nth-child(1) {
  transform: translateY(3.5px) rotate(45deg);
}

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

.hamburger.is-active span:nth-child(3) {
  transform: translateY(-3.5px) rotate(-45deg);
}

/* Mobile Navigation */
.nav-mobile {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  height: 100dvh;
  background-color: var(--color-black);
  z-index: 1005;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s ease, visibility 0.4s ease;
}

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

.nav-mobile-close {
  position: absolute;
  top: 20px;
  right: 24px;
  background: none;
  border: none;
  color: var(--color-white);
  font-size: 2rem;
  line-height: 1;
  cursor: pointer;
  padding: 8px;
  z-index: 1;
}

.nav-mobile-links {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
  margin-bottom: 48px;
}

.nav-mobile-links a {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  text-decoration: none;
}

.nav-mobile-ja {
  font-family: var(--font-ja);
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--color-white);
  letter-spacing: 0.08em;
}

.nav-mobile-en {
  font-family: var(--font-en);
  font-size: 0.7rem;
  font-weight: 300;
  color: var(--color-light-gray);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.nav-mobile-contact-btn {
  display: inline-block;
  padding: 14px 48px;
  border: 1px solid var(--color-white);
  color: var(--color-white);
  font-family: var(--font-ja);
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-decoration: none;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.nav-mobile-contact-btn:hover {
  background-color: var(--color-white);
  color: var(--color-black);
}

/* ========================================
   First View / Hero Section
   ======================================== */
.hero {
  position: relative;
  width: 100%;
  height: 100vh;
  height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background-color: var(--color-black);
}

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

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(ellipse at center, transparent 0%, rgba(10, 10, 10, 0.4) 70%);
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 3;
  text-align: center;
  padding: 0 var(--container-padding);
}

.hero-line-break {
  display: none;
}

.hero-br-mobile {
  display: none;
}

.hero-copy-en {
  font-family: var(--font-en);
  font-size: clamp(2.5rem, 7vw, 6rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
  opacity: 0;
  transform: translateY(30px);
}

.hero-copy-ja {
  font-size: clamp(1rem, 2vw, 1.5rem);
  font-weight: 300;
  color: var(--color-accent);
  letter-spacing: 0.15em;
  margin-bottom: 3rem;
  opacity: 0;
  transform: translateY(20px);
}

.hero-cta {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
  opacity: 0;
  transform: translateY(20px);
}

.hero-scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  opacity: 0;
}

.hero-scroll-indicator span {
  font-family: var(--font-en);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-light-gray);
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--color-white), transparent);
  animation: scrollLine 2s infinite;
}

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

@keyframes fadeInUp {
  from { opacity: 0; transform: translate(-50%, 20px); }
  to { opacity: 1; transform: translate(-50%, 0); }
}

/* ========================================
   Mission Section (Top Page) - Full-screen + Motion
   ======================================== */
.section-mission {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-black);
  position: relative;
  overflow: hidden;
  padding: 80px 0;
}

/* Animated background lines */
.mission-bg-lines {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.mission-line {
  position: absolute;
  top: 0;
  width: 1px;
  height: 100%;
  background: linear-gradient(
    to bottom,
    transparent 0%,
    rgba(255,255,255,0.04) 20%,
    rgba(255,255,255,0.08) 50%,
    rgba(255,255,255,0.04) 80%,
    transparent 100%
  );
}

.mission-line--1 { left: 20%; }
.mission-line--2 { left: 50%; }
.mission-line--3 { left: 80%; }

/* Flowing light effect on lines */
.mission-line::after {
  content: '';
  position: absolute;
  top: -100%;
  left: 0;
  width: 100%;
  height: 40%;
  background: linear-gradient(to bottom, transparent, rgba(255,255,255,0.15), transparent);
  animation: missionLineFlow 6s ease-in-out infinite;
}

.mission-line--2::after { animation-delay: 2s; }
.mission-line--3::after { animation-delay: 4s; }

@keyframes missionLineFlow {
  0% { top: -40%; }
  100% { top: 140%; }
}

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

/* Mission reveal items - start hidden */
[data-mission-reveal] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-mission-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

.mission-label {
  margin-bottom: 2rem;
}

.mission-statement {
  font-size: clamp(1.8rem, 4.5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: 0.04em;
  margin-bottom: 0;
}

.mission-statement em {
  font-style: normal;
  position: relative;
  display: inline-block;
}

.mission-statement em::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-white), transparent);
  transition: width 1.2s cubic-bezier(0.16, 1, 0.3, 1) 0.6s;
}

[data-mission-reveal].is-visible .mission-statement em::after,
.mission-statement.is-visible em::after {
  width: 100%;
}

/* Divider line */
.mission-divider {
  width: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  margin: 2.5rem auto;
  transition: width 1s cubic-bezier(0.16, 1, 0.3, 1) 0.4s;
}

.mission-divider.is-visible {
  width: 120px;
}

.mission-desc {
  font-size: clamp(0.95rem, 1.3vw, 1.15rem);
  color: var(--color-light-gray);
  line-height: 2.2;
  max-width: 600px;
  margin: 0 auto;
}

/* ========================================
   Service Overview Section (Top Page)
   ======================================== */
.section-services {
  padding: var(--section-padding) 0;
  background-color: var(--color-dark);
}

.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin-top: 60px;
}

.service-card {
  padding: 60px;
  border: 1px solid var(--color-border);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-slow);
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.03) 0%, transparent 50%);
  opacity: 0;
  transition: opacity var(--transition-slow);
}

.service-card:hover::before {
  opacity: 1;
}

.service-card--main {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.service-card--sub {
  background-color: var(--color-dark-gray);
}

.service-number {
  font-family: var(--font-en);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--color-light-gray);
  margin-bottom: 1.5rem;
}

.service-card h3 {
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 1rem;
  line-height: 1.3;
}

.service-card h3 small {
  display: block;
  font-family: var(--font-en);
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--color-light-gray);
  margin-top: 0.5rem;
  text-transform: uppercase;
}

.service-card p {
  color: var(--color-accent);
  line-height: 1.9;
  margin-bottom: 2rem;
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 2rem;
}

.service-tag {
  font-size: 0.75rem;
  padding: 4px 12px;
  border: 1px solid var(--color-border);
  color: var(--color-light-gray);
}

/* ========================================
   About Teaser Section (Top Page)
   ======================================== */
.section-about-teaser {
  padding: var(--section-padding) 0;
  background-color: var(--color-black);
}

.about-teaser-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  margin-top: 60px;
}

.about-teaser-image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 3 / 4;
  background-color: var(--color-dark-gray);
}

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

.about-teaser-image:hover img {
  transform: scale(1.05);
}

.about-teaser-image::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 30%;
  background: linear-gradient(to top, var(--color-black), transparent);
}

.about-teaser-text .name-en {
  font-family: var(--font-en);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  color: var(--color-light-gray);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.about-teaser-text h3 {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.about-teaser-text .position {
  font-size: 0.875rem;
  color: var(--color-light-gray);
  margin-bottom: 2rem;
}

.about-teaser-text blockquote {
  font-size: clamp(1.1rem, 1.8vw, 1.4rem);
  font-weight: 400;
  line-height: 1.9;
  color: var(--color-accent);
  border-left: 2px solid var(--color-gray);
  padding-left: 24px;
  margin-bottom: 2.5rem;
}

/* ========================================
   News Section (Top Page)
   ======================================== */
.section-news {
  padding: var(--section-padding) 0;
  background-color: var(--color-dark);
}

.news-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 40px;
}

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

.news-item {
  display: flex;
  align-items: baseline;
  gap: 40px;
  padding: 24px 0;
  border-bottom: 1px solid var(--color-border);
  transition: all var(--transition-base);
}

.news-item:hover {
  padding-left: 16px;
}

.news-date {
  font-family: var(--font-en);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  color: var(--color-light-gray);
  flex-shrink: 0;
  min-width: 100px;
}

.news-category {
  font-size: 0.7rem;
  padding: 2px 10px;
  border: 1px solid var(--color-border);
  color: var(--color-light-gray);
  flex-shrink: 0;
}

.news-title {
  font-size: 0.95rem;
  font-weight: 400;
}

/* ========================================
   CTA Section
   ======================================== */
.section-cta {
  padding: var(--section-padding) 0;
  background-color: var(--color-black);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.section-cta::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.03) 0%, transparent 70%);
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.cta-heading {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 1.5rem;
}

.cta-sub {
  color: var(--color-light-gray);
  font-size: clamp(0.9rem, 1.2vw, 1.1rem);
  margin-bottom: 3rem;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* ========================================
   Footer
   ======================================== */
.site-footer {
  padding: 80px 0 40px;
  background-color: var(--color-dark);
  border-top: 1px solid var(--color-border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 60px;
  margin-bottom: 60px;
}

.footer-brand .site-logo {
  margin-bottom: 1.5rem;
}

.footer-brand p {
  font-size: 0.85rem;
  color: var(--color-light-gray);
  line-height: 1.8;
}

.footer-nav h4 {
  font-family: var(--font-en);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-light-gray);
  margin-bottom: 1.5rem;
}

.footer-nav ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-nav a {
  font-size: 0.85rem;
  color: var(--color-accent);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 40px;
  border-top: 1px solid var(--color-border);
}

.footer-copyright {
  font-family: var(--font-en);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  color: var(--color-mid-gray);
}

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

.footer-links a {
  font-size: 0.75rem;
  color: var(--color-mid-gray);
}

/* ========================================
   About Page
   ======================================== */
.page-hero {
  padding-top: 160px;
  padding-bottom: var(--section-padding);
  position: relative;
}

.page-hero-inner {
  max-width: 800px;
}

.page-hero .page-title-en {
  font-family: var(--font-en);
  font-size: clamp(3rem, 8vw, 7rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 1rem;
  color: var(--color-white);
}

.page-hero .page-title-ja {
  font-size: 1rem;
  color: var(--color-light-gray);
  letter-spacing: 0.15em;
}

/* Mission / Vision detail */
.about-mission-vision {
  padding: var(--section-padding) 0;
  background-color: var(--color-dark);
}

.mv-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  margin-top: 60px;
}

.mv-item h3 {
  font-family: var(--font-en);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-light-gray);
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-border);
}

.mv-item .mv-text {
  font-size: clamp(1.3rem, 2.5vw, 2rem);
  font-weight: 600;
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.mv-item .mv-desc {
  font-size: 0.95rem;
  color: var(--color-light-gray);
  line-height: 1.9;
}

/* CEO Profile */
.about-ceo {
  padding: var(--section-padding) 0;
  background-color: var(--color-black);
}

.ceo-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 80px;
  align-items: start;
  margin-top: 60px;
}

.ceo-image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 3 / 4;
  background-color: var(--color-dark-gray);
}

.ceo-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.ceo-info .name-ja {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 700;
  margin-bottom: 0.3rem;
}

.ceo-info .name-en {
  font-family: var(--font-en);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: var(--color-light-gray);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.ceo-info .position {
  font-size: 0.85rem;
  color: var(--color-light-gray);
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--color-border);
}

.ceo-message {
  font-size: clamp(1rem, 1.4vw, 1.2rem);
  line-height: 2;
  color: var(--color-accent);
  margin-bottom: 2rem;
}

.ceo-career h4 {
  font-family: var(--font-en);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-light-gray);
  margin-bottom: 1.5rem;
}

.ceo-career ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.ceo-career li {
  display: flex;
  gap: 16px;
  font-size: 0.9rem;
  color: var(--color-accent);
  line-height: 1.6;
}

.ceo-career .career-year {
  font-family: var(--font-en);
  font-size: 0.8rem;
  color: var(--color-light-gray);
  flex-shrink: 0;
  min-width: 50px;
}

/* Company Overview */
.about-company {
  padding: var(--section-padding) 0;
  background-color: var(--color-dark);
}

.company-table {
  width: 100%;
  max-width: 800px;
  margin: 60px auto 0;
  border-collapse: collapse;
}

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

.company-table th {
  padding: 20px 24px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-light-gray);
  text-align: left;
  width: 160px;
  vertical-align: top;
}

.company-table td {
  padding: 20px 24px;
  font-size: 0.95rem;
  color: var(--color-accent);
  line-height: 1.8;
}

/* ========================================
   Service Page
   ======================================== */
/* Knowledge Guardian (Main Service) */
.service-hero {
  padding: var(--section-padding) 0;
  padding-top: 160px;
  background-color: var(--color-black);
}

.service-hero-inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 60px;
  align-items: center;
}

.service-hero-badge {
  font-family: var(--font-en);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-light-gray);
  margin-bottom: 1rem;
}

.service-hero h1 {
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 1rem;
}

.service-hero h1 small {
  display: block;
  font-family: var(--font-en);
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--color-light-gray);
  margin-top: 0.5rem;
  text-transform: uppercase;
}

.service-hero .lead {
  font-size: clamp(1rem, 1.4vw, 1.2rem);
  color: var(--color-accent);
  line-height: 1.9;
  margin-bottom: 2rem;
}

.service-hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.service-diagram {
  width: 100%;
  padding: 40px;
  border: 1px solid var(--color-border);
  background-color: var(--color-dark-gray);
}

/* Service Section (Service Page - unified layout) */
.service-section {
  padding: var(--section-padding) 0;
}

.service-section--alt {
  background-color: var(--color-dark);
}

.service-section-inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 60px;
  align-items: center;
}

.service-section-inner--reverse {
  grid-template-columns: 1fr 1.2fr;
}

.service-section-inner--reverse .service-section-text {
  order: 2;
}
.service-section-inner--reverse .service-section-image {
  order: 1;
}

.service-section h2 small {
  display: block;
  font-family: var(--font-en);
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--color-light-gray);
  margin-top: 0.5rem;
  text-transform: uppercase;
}

.service-section .lead {
  font-size: clamp(1rem, 1.4vw, 1.15rem);
  color: var(--color-accent);
  line-height: 1.9;
  margin-bottom: 1.5rem;
}

.service-section-desc {
  font-size: 0.95rem;
  color: var(--color-mid-gray);
  line-height: 2;
  margin-bottom: 2rem;
}

.service-section-features {
  list-style: none;
  padding: 0;
  margin-bottom: 2rem;
}

.service-section-features li {
  position: relative;
  padding-left: 20px;
  font-size: 0.9rem;
  color: var(--color-accent);
  line-height: 2;
}

.service-section-features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.75em;
  width: 6px;
  height: 6px;
  background: var(--color-white);
  border-radius: 50%;
}

.service-section-cta {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.service-image-placeholder {
  width: 100%;
  aspect-ratio: 4 / 3;
  background: var(--color-dark-gray);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-en);
  font-size: 0.8rem;
  color: var(--color-light-gray);
  letter-spacing: 0.1em;
}

.service-coming-soon-badge {
  display: inline-block;
  background: rgba(255,255,255,0.1);
  border: 1px solid var(--color-border);
  padding: 2px 10px;
  border-radius: 4px;
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-light-gray);
  margin-left: 8px;
  vertical-align: middle;
}

.service-coming-soon-label {
  font-size: 0.85rem;
  color: var(--color-light-gray);
  font-style: italic;
}

/* Pain Points */
.service-pain {
  padding: var(--section-padding) 0;
  background-color: var(--color-dark);
}

.pain-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 60px;
}

.pain-card {
  padding: 40px;
  border: 1px solid var(--color-border);
  background-color: var(--color-dark-gray);
  transition: all var(--transition-base);
}

.pain-card:hover {
  border-color: var(--color-gray);
}

.pain-icon {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.pain-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.pain-card p {
  font-size: 0.9rem;
  color: var(--color-light-gray);
  line-height: 1.7;
}

/* Value Proposition */
.service-value {
  padding: var(--section-padding) 0;
  background-color: var(--color-black);
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 60px;
}

.value-card {
  padding: 40px;
  border: 1px solid var(--color-border);
  position: relative;
}

.value-number {
  font-family: var(--font-en);
  font-size: 3rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.05);
  position: absolute;
  top: 16px;
  right: 24px;
}

.value-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.value-card p {
  font-size: 0.85rem;
  color: var(--color-light-gray);
  line-height: 1.8;
}

/* Pricing */
.service-pricing {
  padding: var(--section-padding) 0;
  background-color: var(--color-dark);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 60px;
}

.pricing-card {
  padding: 48px 36px;
  border: 1px solid var(--color-border);
  background-color: var(--color-dark-gray);
  display: flex;
  flex-direction: column;
  transition: all var(--transition-base);
}

.pricing-card--recommended {
  border-color: var(--color-white);
  position: relative;
}

.pricing-card--recommended::before {
  content: 'Recommended';
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-en);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  background-color: var(--color-white);
  color: var(--color-black);
  padding: 4px 16px;
}

.pricing-card h3 {
  font-family: var(--font-en);
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-light-gray);
  margin-bottom: 1rem;
}

.pricing-price {
  font-size: clamp(2rem, 3vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.pricing-price span {
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--color-light-gray);
}

.pricing-initial {
  font-size: 0.8rem;
  color: var(--color-light-gray);
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--color-border);
}

.pricing-features {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 2rem;
  flex-grow: 1;
}

.pricing-features li {
  font-size: 0.85rem;
  color: var(--color-accent);
  padding-left: 20px;
  position: relative;
  line-height: 1.6;
}

.pricing-features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 8px;
  height: 1px;
  background-color: var(--color-light-gray);
}

/* Steps */
.service-steps {
  padding: var(--section-padding) 0;
  background-color: var(--color-black);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  margin-top: 60px;
}

.step-card {
  padding: 32px 20px;
  border: 1px solid var(--color-border);
  text-align: center;
  position: relative;
}

.step-card::after {
  content: '';
  position: absolute;
  right: -12px;
  top: 50%;
  transform: translateY(-50%);
  width: 8px;
  height: 8px;
  border-top: 1px solid var(--color-light-gray);
  border-right: 1px solid var(--color-light-gray);
  transform: translateY(-50%) rotate(45deg);
}

.step-card:last-child::after {
  display: none;
}

.step-number {
  font-family: var(--font-en);
  font-size: 2rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.08);
  margin-bottom: 1rem;
}

.step-card h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.step-card p {
  font-size: 0.8rem;
  color: var(--color-light-gray);
  line-height: 1.6;
}

.step-period {
  font-family: var(--font-en);
  font-size: 0.7rem;
  color: var(--color-mid-gray);
  margin-top: 1rem;
}

/* Security */
.service-security {
  padding: var(--section-padding) 0;
  background-color: var(--color-dark);
}

.security-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
  margin-top: 60px;
}

.security-item {
  text-align: center;
  padding: 32px 16px;
}

.security-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 1.5rem;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.security-item h3 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.security-item p {
  font-size: 0.8rem;
  color: var(--color-light-gray);
  line-height: 1.6;
}

/* Genba Damashii (Sub Service) */
.service-sub {
  padding: var(--section-padding) 0;
  background-color: var(--color-black);
  border-top: 1px solid var(--color-border);
}

.sub-service-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
  margin-top: 60px;
}

.sub-service-content h3 {
  font-size: clamp(1.3rem, 2.5vw, 1.8rem);
  font-weight: 600;
  margin-bottom: 1.5rem;
  line-height: 1.4;
}

.sub-service-content p {
  font-size: 0.95rem;
  color: var(--color-accent);
  line-height: 1.9;
  margin-bottom: 1.5rem;
}

.sub-features {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 2rem;
}

.sub-features li {
  font-size: 0.9rem;
  color: var(--color-accent);
  padding-left: 24px;
  position: relative;
  line-height: 1.6;
}

.sub-features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 12px;
  height: 1px;
  background-color: var(--color-light-gray);
}

.sub-plans {
  margin-top: 2rem;
}

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

.sub-plan-table th,
.sub-plan-table td {
  padding: 12px 16px;
  font-size: 0.85rem;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
}

.sub-plan-table th {
  color: var(--color-light-gray);
  font-weight: 500;
  width: 30%;
}

.sub-plan-table td {
  color: var(--color-accent);
}

/* ========================================
   News Archive Page
   ======================================== */
.archive-content {
  padding: 60px 0 var(--section-padding);
}

.archive-list {
  max-width: 800px;
  margin: 0 auto;
}

.archive-item {
  display: flex;
  align-items: baseline;
  gap: 32px;
  padding: 24px 0;
  border-bottom: 1px solid var(--color-border);
  transition: all var(--transition-base);
}

.archive-item:hover {
  padding-left: 16px;
}

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

/* Pagination */
.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 60px;
}

.pagination a,
.pagination span {
  font-family: var(--font-en);
  font-size: 0.85rem;
  padding: 8px 16px;
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
}

.pagination a:hover {
  opacity: 1;
  border-color: var(--color-white);
}

.pagination .current {
  background-color: var(--color-white);
  color: var(--color-black);
  border-color: var(--color-white);
}

/* ========================================
   Single Post Page
   ======================================== */
.single-header {
  padding-top: 160px;
  padding-bottom: 40px;
}

.single-meta {
  display: flex;
  gap: 16px;
  align-items: center;
  margin-bottom: 1.5rem;
}

.single-header h1 {
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: 600;
  line-height: 1.5;
}

.single-content {
  padding: 60px 0 var(--section-padding);
}

.single-content .entry-content {
  max-width: 720px;
  margin: 0 auto;
}

.entry-content h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin: 2.5rem 0 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-border);
}

.entry-content h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 2rem 0 0.75rem;
}

.entry-content p {
  margin-bottom: 1.5rem;
  color: var(--color-accent);
  line-height: 2;
}

.entry-content ul,
.entry-content ol {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
}

.entry-content li {
  margin-bottom: 0.5rem;
  color: var(--color-accent);
  line-height: 1.8;
  list-style: disc;
}

.entry-content ol li {
  list-style: decimal;
}

.entry-content blockquote {
  border-left: 3px solid var(--color-gray);
  padding: 1rem 1.5rem;
  margin: 1.5rem 0;
  background-color: var(--color-dark-gray);
  color: var(--color-accent);
}

.entry-content img {
  border-radius: 0;
  margin: 2rem 0;
}

.entry-content a {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.single-nav {
  display: flex;
  justify-content: space-between;
  padding: 40px 0;
  border-top: 1px solid var(--color-border);
  max-width: 720px;
  margin: 0 auto;
}

.single-nav a {
  font-size: 0.85rem;
  color: var(--color-light-gray);
}

/* ========================================
   Contact Page
   ======================================== */
.contact-content {
  padding: 60px 0 var(--section-padding);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  margin-top: 40px;
}

.contact-info h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.contact-info p {
  font-size: 0.95rem;
  color: var(--color-light-gray);
  line-height: 1.9;
  margin-bottom: 2rem;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-detail-item {
  display: flex;
  gap: 16px;
}

.contact-detail-item .label {
  font-size: 0.8rem;
  color: var(--color-mid-gray);
  min-width: 80px;
  flex-shrink: 0;
}

.contact-detail-item .value {
  font-size: 0.9rem;
  color: var(--color-accent);
}

/* Contact Form (CF7 Styling) */
.contact-form-wrap {
  padding: 48px;
  border: 1px solid var(--color-border);
  background-color: var(--color-dark-gray);
}

.contact-form-wrap .wpcf7-form p {
  margin-bottom: 1.5rem;
}

.contact-form-wrap label {
  display: block;
  font-size: 0.85rem;
  color: var(--color-light-gray);
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.contact-form-wrap input[type="text"],
.contact-form-wrap input[type="email"],
.contact-form-wrap input[type="tel"],
.contact-form-wrap textarea,
.contact-form-wrap select {
  width: 100%;
  padding: 12px 16px;
  background-color: var(--color-dark);
  border: 1px solid var(--color-border);
  color: var(--color-white);
  font-family: var(--font-ja);
  font-size: 0.95rem;
  transition: border-color var(--transition-base);
  outline: none;
  -webkit-appearance: none;
  border-radius: 0;
}

.contact-form-wrap input:focus,
.contact-form-wrap textarea:focus,
.contact-form-wrap select:focus {
  border-color: var(--color-white);
}

.contact-form-wrap textarea {
  min-height: 160px;
  resize: vertical;
}

.contact-form-wrap input[type="submit"] {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 16px 48px;
  background-color: var(--color-white);
  color: var(--color-black);
  font-family: var(--font-en);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: 1px solid var(--color-white);
  cursor: pointer;
  transition: all var(--transition-base);
  -webkit-appearance: none;
  border-radius: 0;
}

.contact-form-wrap input[type="submit"]:hover {
  background-color: var(--color-black);
  color: var(--color-white);
}

.wpcf7-not-valid-tip {
  font-size: 0.8rem;
  color: #e74c3c;
  margin-top: 4px;
}

.wpcf7-response-output {
  padding: 16px;
  border: 1px solid var(--color-border) !important;
  font-size: 0.9rem;
  margin-top: 1rem;
}

/* ========================================
   404 Page
   ======================================== */
.page-404 {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.page-404 .error-code {
  font-family: var(--font-en);
  font-size: clamp(5rem, 15vw, 12rem);
  font-weight: 700;
  line-height: 1;
  color: rgba(255, 255, 255, 0.05);
  margin-bottom: 1rem;
}

.page-404 h1 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.page-404 p {
  color: var(--color-light-gray);
  margin-bottom: 2rem;
}

/* ========================================
   Loading Screen
   ======================================== */
.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--color-black);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}

.loading-screen.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loading-logo {
  opacity: 0;
  animation: loadingFade 1.5s ease forwards;
}

.loading-logo img {
  width: auto;
  height: 80px;
  display: block;
}

@keyframes loadingFade {
  0% { opacity: 0; transform: translateY(10px); }
  30% { opacity: 1; transform: translateY(0); }
  70% { opacity: 1; }
  100% { opacity: 0; }
}

/* ========================================
   AI Knowledge LP - Light Theme
   ======================================== */

/* Body override for light theme */
.is-ai-knowledge-page {
  background-color: #ffffff;
  color: #111827;
}

/* Hide corporate nav on LP */
.is-ai-knowledge-page .site-header {
  display: none !important;
}
.is-ai-knowledge-page .nav-mobile {
  display: none !important;
}

/* LP Header */
.aik-lp-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid #e5e7eb;
}
.aik-lp-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.aik-lp-logo {
  font-family: var(--font-en);
  font-size: 1.3rem;
  font-weight: 700;
  color: #111827;
  text-transform: lowercase;
}
.aik-lp-logo span { color: #9ca3af; font-weight: 300; }
.aik-lp-cta-btn {
  display: inline-flex;
  align-items: center;
  padding: 8px 20px;
  background-color: #4f46e5;
  color: #ffffff;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: 8px;
  transition: background-color 0.2s;
}
.aik-lp-cta-btn:hover { background-color: #4338ca; opacity: 1; }

/* Common section */
.aik-section { padding: clamp(60px, 8vw, 100px) 0; }
.aik-section--gray { background-color: #f9fafb; }
.aik-section--gradient { background: linear-gradient(180deg, #ffffff 0%, #eef2ff30 100%); }
.aik-section--dark { background-color: #111827; }

/* Section header */
.aik-section-header { text-align: center; max-width: 700px; margin: 0 auto 48px; }
.aik-section-title {
  font-size: clamp(1.5rem, 3.5vw, 2.5rem);
  font-weight: 700;
  color: #111827;
  line-height: 1.3;
  margin-bottom: 1rem;
}
.aik-section-title--white { color: #ffffff; }
.aik-section-subtitle { font-size: 1rem; color: #6b7280; line-height: 1.8; }
.aik-section-subtitle--light { color: #9ca3af; }

/* Badge */
.aik-badge {
  display: inline-block;
  padding: 4px 14px;
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: 999px;
  background-color: #e0e7ff;
  color: #4338ca;
  margin-bottom: 16px;
}
.aik-badge--accent { background-color: #d1fae5; color: #047857; }
.aik-badge--red { background-color: #fee2e2; color: #b91c1c; }
.aik-badge--accent-dark { background-color: rgba(16, 185, 129, 0.2); color: #34d399; }

/* Buttons */
.aik-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: 8px;
  transition: all 0.2s;
  text-align: center;
  justify-content: center;
}
.aik-btn--primary {
  background-color: #4f46e5;
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(79, 70, 229, 0.25);
}
.aik-btn--primary:hover { background-color: #4338ca; opacity: 1; }
.aik-btn--outline {
  border: 2px solid #4f46e5;
  color: #4f46e5;
  background: transparent;
}
.aik-btn--outline:hover { background-color: #eef2ff; opacity: 1; }
.aik-btn--lg { padding: 16px 36px; font-size: 1rem; }
.aik-btn--full { width: 100%; }
.aik-btn-arrow { font-size: 1.1rem; }

/* Text colors */
.aik-text-primary { color: #4f46e5; }
.aik-text-accent { color: #10b981; }
.aik-text-red { color: #ef4444; }

/* Cards */
.aik-card {
  background: #ffffff;
  border: 1px solid #f3f4f6;
  border-radius: 16px;
  padding: 28px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}
.aik-card--hover { transition: all 0.3s; }
.aik-card--hover:hover { box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08); transform: translateY(-4px); }
.aik-card h3 { font-size: 1.05rem; font-weight: 700; color: #111827; margin-bottom: 0.75rem; line-height: 1.5; }
.aik-card p { font-size: 0.9rem; color: #6b7280; line-height: 1.7; }

/* Icon box */
.aik-icon-box {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 16px;
}
.aik-icon-box--primary { background-color: #eef2ff; color: #4f46e5; }
.aik-icon-box--red { background-color: #fef2f2; color: #ef4444; }

/* Desktop-only line break */
.aik-br-desktop { display: none; }
@media (min-width: 640px) { .aik-br-desktop { display: block; } }

/* ---- HERO ---- */
.aik-hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #eef2ff 0%, #ffffff 50%, #ecfdf5 100%);
  padding-top: 120px;
  padding-bottom: 60px;
}
.aik-hero-deco {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(80px);
}
.aik-hero-deco--1 { top: -160px; right: -160px; width: 400px; height: 400px; background: rgba(199, 210, 254, 0.3); }
.aik-hero-deco--2 { bottom: -160px; left: -160px; width: 400px; height: 400px; background: rgba(167, 243, 208, 0.3); }
.aik-hero-container { position: relative; }
.aik-hero-center { max-width: 800px; margin: 0 auto; text-align: center; }
.aik-hero-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.3;
  color: #111827;
  margin-bottom: 1.5rem;
}
.aik-hero-sub { font-size: clamp(0.95rem, 1.5vw, 1.15rem); color: #6b7280; line-height: 1.8; margin-bottom: 2rem; }
.aik-hero-cta { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-bottom: 1.5rem; }
.aik-hero-note { font-size: 0.85rem; color: #9ca3af; }

/* Demo Mockup */
.aik-demo { max-width: 800px; margin: 48px auto 0; border-radius: 12px; overflow: hidden; border: 1px solid #e5e7eb; background: #ffffff; box-shadow: 0 20px 50px rgba(79, 70, 229, 0.1); }
.aik-demo-chrome { display: flex; align-items: center; gap: 8px; padding: 10px 16px; background: #f9fafb; border-bottom: 1px solid #e5e7eb; }
.aik-demo-dots { display: flex; gap: 6px; }
.aik-demo-dot { width: 12px; height: 12px; border-radius: 50%; }
.aik-demo-dot--red { background: #f87171; }
.aik-demo-dot--yellow { background: #fbbf24; }
.aik-demo-dot--green { background: #4ade80; }
.aik-demo-url { margin: 0 auto; font-size: 0.7rem; color: #9ca3af; background: #ffffff; border: 1px solid #e5e7eb; padding: 4px 16px; border-radius: 6px; }
.aik-demo-body { display: flex; min-height: 280px; }
.aik-demo-sidebar { width: 180px; flex-shrink: 0; border-right: 1px solid #f3f4f6; background: rgba(249, 250, 251, 0.5); padding: 12px; display: none; }
.aik-demo-sidebar-title { font-size: 0.6rem; font-weight: 700; color: #9ca3af; text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 8px; }
.aik-demo-doc { font-size: 0.7rem; color: #6b7280; padding: 6px 8px; border-radius: 6px; }
.aik-demo-doc:hover { background: #f3f4f6; }
.aik-demo-chat { flex: 1; display: flex; flex-direction: column; }
.aik-demo-messages { flex: 1; padding: 16px; display: flex; flex-direction: column; gap: 12px; }
.aik-demo-msg { display: flex; gap: 8px; }
.aik-demo-msg--user { justify-content: flex-end; }
.aik-demo-msg--user p { background: #4f46e5; color: #ffffff; border-radius: 12px; padding: 8px 14px; font-size: 0.8rem; max-width: 75%; }
.aik-demo-msg--ai { align-items: flex-start; }
.aik-demo-ai-icon { width: 28px; height: 28px; border-radius: 50%; background: #eef2ff; color: #4f46e5; display: flex; align-items: center; justify-content: center; font-size: 0.6rem; font-weight: 700; flex-shrink: 0; }
.aik-demo-msg--ai > div p { background: #ffffff; border: 1px solid #e5e7eb; border-radius: 12px; padding: 8px 14px; font-size: 0.8rem; color: #374151; }
.aik-demo-source { margin-top: 6px; font-size: 0.65rem; color: #6366f1; background: #f9fafb; padding: 4px 8px; border-radius: 4px; display: inline-block; }
.aik-demo-input { border-top: 1px solid #f3f4f6; padding: 10px 16px; }
.aik-demo-input span { font-size: 0.7rem; color: #9ca3af; background: #f9fafb; border: 1px solid #e5e7eb; display: block; padding: 8px 12px; border-radius: 8px; }

/* ---- PROBLEM ---- */
.aik-problem-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

/* ---- SERVICE VALUES ---- */
.aik-service-intro {
  max-width: 700px;
  margin: 0 auto 48px;
  text-align: center;
  padding: 40px;
  border-radius: 16px;
  border: 1px solid #c7d2fe;
  background: linear-gradient(135deg, #eef2ff 0%, #ffffff 100%);
  box-shadow: 0 8px 30px rgba(79, 70, 229, 0.08);
}
.aik-service-intro-label { font-size: 0.75rem; color: #6366f1; font-weight: 600; margin-bottom: 8px; }
.aik-service-intro-name { font-size: 1.5rem; font-weight: 700; color: #111827; margin-bottom: 12px; }
.aik-service-intro-desc { font-size: 0.95rem; color: #6b7280; line-height: 1.8; }
.aik-value-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }

/* ---- ADOPTION ---- */
.aik-compare-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 48px; }
.aik-compare-card { border-radius: 16px; padding: 32px; }
.aik-compare-card--fail { border: 1px solid #fecaca; background: rgba(254, 242, 242, 0.5); }
.aik-compare-card--success { border: 1px solid #c7d2fe; background: rgba(238, 242, 255, 0.5); }
.aik-compare-card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 16px; color: #111827; }
.aik-compare-card--fail h3 { color: #b91c1c; }
.aik-compare-card--success h3 { color: #4f46e5; }
.aik-compare-card ul { display: flex; flex-direction: column; gap: 12px; }
.aik-compare-card li { font-size: 0.9rem; color: #374151; padding-left: 20px; position: relative; line-height: 1.6; }
.aik-compare-card--fail li::before { content: '✕'; position: absolute; left: 0; color: #ef4444; font-size: 0.75rem; }
.aik-compare-card--success li::before { content: '✓'; position: absolute; left: 0; color: #4f46e5; font-weight: 700; }
.aik-support-heading { text-align: center; font-size: 1.2rem; font-weight: 700; color: #111827; margin-bottom: 24px; }
.aik-support-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; max-width: 900px; margin: 0 auto; }

/* ---- SECURITY ---- */
.aik-security-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.aik-security-card { text-align: center; padding: 24px 16px; border-radius: 16px; border: 1px solid #374151; background: rgba(31, 41, 55, 0.5); }
.aik-security-icon { font-size: 1.2rem; color: #34d399; margin-bottom: 12px; }
.aik-security-card h3 { font-size: 0.9rem; font-weight: 600; color: #ffffff; margin-bottom: 8px; }
.aik-security-card p { font-size: 0.8rem; color: #9ca3af; line-height: 1.6; }

/* ---- INDUSTRY ---- */
/* ---- Industry Tabs ---- */
.aik-tabs { display: flex; gap: 8px; margin-bottom: 40px; justify-content: center; }
.aik-tab { padding: 10px 28px; border-radius: 999px; border: 1px solid #e5e7eb; background: #ffffff; font-size: 0.9rem; font-weight: 500; color: #6b7280; cursor: pointer; transition: all 0.2s; }
.aik-tab:hover { border-color: #6366f1; color: #6366f1; }
.aik-tab.is-active { background: #6366f1; border-color: #6366f1; color: #ffffff; }

.aik-tab-panel { display: none; }
.aik-tab-panel.is-active { display: block; }

/* Pain Rows */
.aik-pain-list { display: flex; flex-direction: column; gap: 12px; margin-bottom: 40px; }
.aik-pain-row { display: grid; grid-template-columns: 1fr 1fr; gap: 0; background: #ffffff; border: 1px solid #f3f4f6; border-radius: 16px; overflow: hidden; }
.aik-pain-cell { display: flex; align-items: flex-start; gap: 12px; padding: 24px; }
.aik-pain-cell--problem { background: #ffffff; }
.aik-pain-cell--solution { background: #fafafa; }
.aik-pain-emoji { font-size: 1.2rem; flex-shrink: 0; margin-top: 2px; }
.aik-pain-arrow { color: #6366f1; font-weight: 600; font-size: 1rem; flex-shrink: 0; margin-top: 2px; }
.aik-pain-cell p { font-size: 0.9rem; color: #374151; line-height: 1.7; margin: 0; }

/* Effects Grid */
.aik-effects { background: #f9fafb; border: 1px solid #f3f4f6; border-radius: 20px; padding: 40px; margin-bottom: 40px; text-align: center; }
.aik-effects-title { font-size: 1rem; font-weight: 600; color: #111827; margin-bottom: 24px; }
.aik-effects-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.aik-effect-card { display: flex; align-items: center; gap: 16px; background: #ffffff; border: 1px solid #f3f4f6; border-radius: 12px; padding: 20px 24px; }
.aik-effect-num { font-size: 2rem; font-weight: 700; color: #6366f1; flex-shrink: 0; }
.aik-effect-num--sm { font-size: 1.3rem; }
.aik-effect-label { font-size: 0.9rem; color: #374151; text-align: left; }
.aik-effect-card--check { background: #f0fdf4; border-color: #d1fae5; }
.aik-effect-check { font-size: 1.4rem; color: #10b981; flex-shrink: 0; background: #d1fae5; width: 36px; height: 36px; border-radius: 50%; display: flex; align-items: center; justify-content: center; }

/* Time Simulation */
.aik-simulation { background: #ffffff; border: 1px solid #f3f4f6; border-radius: 20px; padding: 40px; margin-bottom: 40px; }
.aik-simulation-title { font-size: 1rem; font-weight: 600; color: #111827; text-align: center; margin-bottom: 32px; border-bottom: 1px solid #f3f4f6; padding-bottom: 20px; }

.aik-simulation-chart { display: flex; justify-content: center; margin-bottom: 32px; }
.aik-donut { position: relative; display: flex; align-items: center; justify-content: center; }
.aik-donut svg { transform: rotate(-90deg); }
.aik-donut-label { position: absolute; text-align: center; }
.aik-donut-num { display: block; font-size: 2rem; font-weight: 700; color: #6366f1; }
.aik-donut-text { display: block; font-size: 0.75rem; color: #9ca3af; }

.aik-sim-table { width: 100%; border-collapse: collapse; font-size: 0.85rem; margin-bottom: 24px; }
.aik-sim-table th { text-align: left; font-size: 0.75rem; color: #9ca3af; font-weight: 500; padding: 8px 12px; border-bottom: 1px solid #f3f4f6; }
.aik-sim-table td { padding: 12px; color: #374151; border-bottom: 1px solid #f3f4f6; }
.aik-sim-table thead th:nth-child(2),
.aik-sim-table thead th:nth-child(3),
.aik-sim-table thead th:nth-child(4) { text-align: right; }
.aik-sim-table td:nth-child(2),
.aik-sim-table td:nth-child(3),
.aik-sim-table td:nth-child(4) { text-align: right; }
.aik-sim-table tfoot td { border-bottom: none; background: #eef2ff; font-weight: 600; }
.aik-sim-dot { display: inline-block; width: 10px; height: 10px; border-radius: 50%; margin-right: 8px; vertical-align: middle; }
.aik-sim-badge { display: inline-block; background: #eef2ff; color: #6366f1; font-size: 0.75rem; font-weight: 600; padding: 2px 10px; border-radius: 999px; }
.aik-sim-badge--accent { background: #6366f1; color: #ffffff; }

.aik-sim-summary { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; background: #eef2ff; border-radius: 12px; overflow: hidden; }
.aik-sim-summary-item { display: flex; align-items: center; justify-content: center; gap: 4px; padding: 16px 12px; flex-wrap: wrap; }
.aik-sim-summary-item--accent { background: #6366f1; color: #ffffff; }
.aik-sim-summary-item--accent .aik-sim-summary-num,
.aik-sim-summary-item--accent .aik-sim-summary-label { color: #ffffff; }
.aik-sim-summary-num { font-size: 1.3rem; font-weight: 700; color: #111827; }
.aik-sim-summary-label { font-size: 0.8rem; color: #6b7280; }

/* ---- STEPS ---- */
.aik-steps { max-width: 700px; margin: 0 auto; position: relative; }
.aik-step { display: flex; gap: 24px; align-items: flex-start; position: relative; padding-bottom: 32px; }
.aik-step:last-child { padding-bottom: 0; }
.aik-step::before { content: ''; position: absolute; left: 23px; top: 48px; bottom: 0; width: 2px; background: #c7d2fe; }
.aik-step:last-child::before { display: none; }
.aik-step-num {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: #4f46e5;
  color: #ffffff;
  font-size: 1.1rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.aik-step-content { background: #ffffff; border: 1px solid #f3f4f6; border-radius: 16px; padding: 24px; box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05); flex: 1; }
.aik-step-phase { font-size: 0.75rem; color: #4f46e5; font-weight: 600; }
.aik-step-content h3 { font-size: 1.05rem; font-weight: 700; color: #111827; margin: 8px 0; }
.aik-step-content p { font-size: 0.9rem; color: #6b7280; line-height: 1.7; }

/* ---- PRICING ---- */
.aik-pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; max-width: 1000px; margin: 0 auto; }
.aik-pricing-card { background: #ffffff; border: 1px solid #e5e7eb; border-radius: 16px; padding: 32px; display: flex; flex-direction: column; position: relative; }
.aik-pricing-card--recommended { border-color: #4f46e5; box-shadow: 0 10px 40px rgba(79, 70, 229, 0.1); }
.aik-pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: #4f46e5;
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: 999px;
}
.aik-pricing-card h3 { font-size: 1.2rem; font-weight: 700; color: #111827; margin-bottom: 4px; }
.aik-pricing-desc { font-size: 0.85rem; color: #9ca3af; margin-bottom: 16px; }
.aik-pricing-price { font-size: 2.2rem; font-weight: 700; color: #111827; margin-bottom: 4px; }
.aik-pricing-price span { font-size: 0.8rem; font-weight: 400; color: #9ca3af; margin-left: 8px; }
.aik-pricing-initial { font-size: 0.75rem; color: #9ca3af; margin-bottom: 20px; }
.aik-pricing-card ul { flex: 1; margin-bottom: 24px; display: flex; flex-direction: column; gap: 10px; }
.aik-pricing-card li { font-size: 0.85rem; color: #6b7280; padding-left: 22px; position: relative; line-height: 1.5; }
.aik-pricing-card li::before { content: '✓'; position: absolute; left: 0; color: #6366f1; font-weight: 700; font-size: 0.8rem; }

/* ---- FAQ ---- */
.aik-faq-list { max-width: 700px; margin: 0 auto; background: #ffffff; border: 1px solid #e5e7eb; border-radius: 16px; padding: 0 24px; }
.aik-faq-item { border-bottom: 1px solid #e5e7eb; }
.aik-faq-item:last-child { border-bottom: none; }
.aik-faq-q { display: flex; justify-content: space-between; align-items: center; padding: 20px 0; cursor: pointer; }
.aik-faq-q:hover { opacity: 0.7; }
.aik-faq-q p { font-size: 1rem; font-weight: 500; color: #111827; padding-right: 16px; }
.aik-faq-toggle { font-size: 0.7rem; color: #9ca3af; flex-shrink: 0; transition: transform 0.2s; }
.aik-faq-item.is-open .aik-faq-toggle { transform: rotate(180deg); }
.aik-faq-a { max-height: 0; overflow: hidden; transition: max-height 0.4s var(--ease-out-expo); }
.aik-faq-a p { font-size: 0.9rem; color: #6b7280; line-height: 1.8; padding-bottom: 20px; }

/* ---- CTA ---- */
.aik-cta { background: linear-gradient(135deg, #eef2ff 0%, #ffffff 50%, #ecfdf5 100%); }

/* LP Footer override for light theme */
.is-ai-knowledge-page .site-footer {
  background-color: #f9fafb;
  color: #374151;
  border-top: 1px solid #e5e7eb;
}
.is-ai-knowledge-page .site-footer a { color: #6b7280; }
.is-ai-knowledge-page .site-footer a:hover { color: #111827; opacity: 1; }
.is-ai-knowledge-page .footer-logo { color: #111827; }
.is-ai-knowledge-page .footer-logo span { color: #9ca3af; }
.is-ai-knowledge-page .footer-desc { color: #6b7280; }
.is-ai-knowledge-page .footer-heading { color: #111827; }
.is-ai-knowledge-page .footer-bottom { border-top-color: #e5e7eb; color: #9ca3af; }

/* Loading screen hidden on LP */
.is-ai-knowledge-page .loading-screen { display: none; }

/* ========================================
   Demo Page Styles
   ======================================== */

/* Hide corporate nav/footer on demo */
.is-demo-page .site-header,
.is-demo-page .site-footer,
.is-demo-page .loading-screen { display: none; }

.demo-app {
  font-family: 'Inter', 'Noto Sans JP', sans-serif;
  min-height: 100vh;
  background: #f9fafb;
  color: #111827;
}

/* ---- Hub ---- */
.demo-hub {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 24px;
}

.demo-hub-inner {
  max-width: 900px;
  width: 100%;
  text-align: center;
}

.demo-back-link {
  display: inline-block;
  margin-bottom: 32px;
  color: #6366f1;
  font-size: 0.9rem;
  text-decoration: none;
}
.demo-back-link:hover { text-decoration: underline; }

.demo-hub-icon {
  font-size: 3rem;
  margin-bottom: 16px;
}

.demo-hub-inner h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.demo-hub-desc {
  font-size: 1rem;
  color: #6b7280;
  margin-bottom: 48px;
}

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

.demo-industry-btn {
  background: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 16px;
  padding: 32px 24px;
  text-align: left;
  cursor: pointer;
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
}
.demo-industry-btn:hover {
  border-color: #6366f1;
  box-shadow: 0 4px 20px rgba(99,102,241,0.1);
  transform: translateY(-2px);
}

.demo-industry-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.demo-industry-btn h2 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.demo-industry-btn p {
  font-size: 0.85rem;
  color: #6b7280;
  line-height: 1.6;
  margin-bottom: 16px;
}

.demo-industry-link {
  font-size: 0.85rem;
  color: #6366f1;
  font-weight: 500;
}

/* ---- Chat App ---- */
.demo-chat-app {
  height: 100vh;
  display: flex;
  background: #ffffff;
  overflow: hidden;
}

/* Sidebar */
.demo-sidebar {
  width: 280px;
  flex-shrink: 0;
  background: #f9fafb;
  border-right: 1px solid #e5e7eb;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.demo-sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid #e5e7eb;
}

.demo-sidebar-header h2 {
  font-size: 0.9rem;
  font-weight: 600;
}

.demo-sidebar-close {
  background: none;
  border: none;
  font-size: 1.2rem;
  cursor: pointer;
  color: #9ca3af;
  display: none;
}

.demo-sidebar-list {
  flex: 1;
  overflow-y: auto;
  padding: 12px;
}

.demo-sidebar-doc {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 8px;
  margin-bottom: 4px;
  transition: background 0.15s;
}
.demo-sidebar-doc:hover {
  background: #f3f4f6;
}

.demo-sidebar-doc-icon {
  font-size: 1rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.demo-sidebar-doc-title {
  font-size: 0.8rem;
  font-weight: 500;
  color: #111827;
  line-height: 1.4;
}

.demo-sidebar-doc-meta {
  font-size: 0.7rem;
  color: #9ca3af;
  margin-top: 2px;
}

.demo-sidebar-overlay {
  display: none;
}

/* Chat Main */
.demo-chat-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
}

/* Header */
.demo-chat-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  border-bottom: 1px solid #e5e7eb;
  background: #ffffff;
  flex-shrink: 0;
}

.demo-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.2rem;
  cursor: pointer;
  color: #6b7280;
}

.demo-chat-logo {
  font-size: 0.95rem;
  font-weight: 600;
}
.demo-chat-logo span {
  margin-left: 4px;
}

.demo-chat-badge {
  background: #eef2ff;
  color: #6366f1;
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: 20px;
  font-weight: 500;
}

.demo-back-chat {
  font-size: 0.85rem;
  color: #6366f1;
  text-decoration: none;
  white-space: nowrap;
}
.demo-back-chat:hover { text-decoration: underline; }

/* Messages Area */
.demo-messages {
  flex: 1;
  overflow-y: auto;
  padding: 24px 20px;
  min-height: 0;
}

/* Empty State */
.demo-empty-state {
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
  padding-top: 40px;
}

.demo-empty-icon {
  font-size: 2.5rem;
  margin-bottom: 12px;
}

.demo-empty-state h2 {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.demo-empty-state > p {
  font-size: 0.9rem;
  color: #6b7280;
  margin-bottom: 8px;
}

.demo-empty-hint {
  font-size: 0.8rem;
  color: #9ca3af;
  margin-bottom: 32px;
}

/* Question Cards */
.demo-question-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  text-align: left;
}

.demo-q-card {
  background: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  padding: 16px;
  cursor: pointer;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.demo-q-card:hover {
  border-color: #6366f1;
  box-shadow: 0 2px 12px rgba(99,102,241,0.08);
}

.demo-q-card-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.demo-q-card-icon {
  font-size: 1rem;
}

.demo-q-card-cat {
  font-size: 0.7rem;
  color: #6366f1;
  background: #eef2ff;
  padding: 2px 8px;
  border-radius: 10px;
  font-weight: 500;
}

.demo-q-card-text {
  font-size: 0.85rem;
  color: #374151;
  line-height: 1.5;
}

/* Message List */
.demo-message-list {
  max-width: 740px;
  margin: 0 auto;
}

/* Messages */
.demo-msg {
  margin-bottom: 24px;
}

.demo-msg--user {
  display: flex;
  justify-content: flex-end;
}

.demo-msg-bubble-user {
  background: #6366f1;
  color: #ffffff;
  padding: 12px 18px;
  border-radius: 18px 18px 4px 18px;
  max-width: 70%;
  font-size: 0.9rem;
  line-height: 1.6;
}

.demo-msg--ai {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.demo-msg-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: #eef2ff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.demo-msg-content {
  flex: 1;
  min-width: 0;
}

.demo-msg-bubble-ai {
  background: #f9fafb;
  border: 1px solid #e5e7eb;
  border-radius: 4px 18px 18px 18px;
  padding: 16px 20px;
  font-size: 0.9rem;
  line-height: 1.8;
  white-space: pre-wrap;
  color: #374151;
}

/* Sources */
.demo-msg-sources {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.demo-msg-source {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #f3f4f6;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  padding: 6px 12px;
  font-size: 0.75rem;
  color: #6b7280;
}

.demo-msg-source-icon {
  font-size: 0.7rem;
}

/* Typing Indicator */
.demo-typing {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  margin-bottom: 24px;
}

.demo-typing-dots {
  background: #f9fafb;
  border: 1px solid #e5e7eb;
  border-radius: 4px 18px 18px 18px;
  padding: 16px 24px;
  display: flex;
  gap: 4px;
}

.demo-typing-dot {
  width: 8px;
  height: 8px;
  background: #9ca3af;
  border-radius: 50%;
  animation: demoDotBounce 1.4s infinite ease-in-out;
}
.demo-typing-dot:nth-child(2) { animation-delay: 0.2s; }
.demo-typing-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes demoDotBounce {
  0%, 80%, 100% { transform: scale(0.6); opacity: 0.4; }
  40% { transform: scale(1); opacity: 1; }
}

/* Input Area */
.demo-input-area {
  padding: 12px 20px 16px;
  border-top: 1px solid #e5e7eb;
  background: #ffffff;
  flex-shrink: 0;
}

/* Suggestion Chips */
.demo-suggestion-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}

.demo-chip {
  background: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 20px;
  padding: 6px 14px;
  font-size: 0.8rem;
  color: #6366f1;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
  white-space: nowrap;
}
.demo-chip:hover {
  background: #eef2ff;
  border-color: #6366f1;
}

.demo-input-box {
  display: flex;
  gap: 8px;
}

.demo-input-box input {
  flex: 1;
  padding: 10px 16px;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  font-size: 0.9rem;
  background: #f9fafb;
  color: #9ca3af;
  outline: none;
}

.demo-send-btn {
  padding: 10px 16px;
  background: #e5e7eb;
  border: none;
  border-radius: 12px;
  color: #9ca3af;
  cursor: not-allowed;
  font-size: 1rem;
}

.demo-input-note {
  font-size: 0.75rem;
  color: #9ca3af;
  text-align: center;
  margin-top: 8px;
}

/* Demo Responsive */
@media (max-width: 768px) {
  .demo-industry-cards {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }

  .demo-sidebar {
    position: fixed;
    top: 0;
    left: -280px;
    height: 100vh;
    z-index: 100;
    transition: left 0.3s ease;
  }
  .demo-sidebar.is-open {
    left: 0;
  }

  .demo-sidebar-close {
    display: block;
  }

  .demo-sidebar-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.3);
    z-index: 99;
  }
  .demo-sidebar-overlay.is-active {
    display: block;
  }

  .demo-menu-btn {
    display: block;
  }

  .demo-question-cards {
    grid-template-columns: 1fr;
  }

  .demo-msg-bubble-user {
    max-width: 85%;
  }

  .demo-hub-inner h1 {
    font-size: 1.5rem;
  }
}

/* ========================================
   Contact Confirmation & Thanks
   ======================================== */
.contact-confirm-wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 60px 0;
}

.contact-confirm-title {
  font-size: clamp(1.4rem, 3vw, 1.8rem);
  font-weight: 700;
  margin-bottom: 12px;
}

.contact-confirm-desc {
  color: var(--color-light-gray);
  margin-bottom: 40px;
  font-size: 0.9rem;
}

.contact-confirm-table {
  border-top: 1px solid var(--color-border);
  margin-bottom: 40px;
}

.contact-confirm-row {
  display: flex;
  border-bottom: 1px solid var(--color-border);
  padding: 16px 0;
  gap: 20px;
}

.contact-confirm-label {
  flex-shrink: 0;
  width: 160px;
  font-size: 0.85rem;
  color: var(--color-light-gray);
  font-weight: 500;
}

.contact-confirm-value {
  flex: 1;
  font-size: 0.95rem;
  word-break: break-word;
}

.contact-confirm-value--message {
  white-space: pre-wrap;
  line-height: 1.8;
}

.contact-confirm-actions {
  display: flex;
  gap: 16px;
  align-items: center;
}

.contact-confirm-actions form {
  display: inline;
}

.contact-error {
  max-width: 720px;
  margin: 0 auto 32px;
  padding: 16px 20px;
  border: 1px solid #e74c3c;
  background: rgba(231, 76, 60, 0.08);
  color: #e74c3c;
  font-size: 0.9rem;
}

/* Thanks page */
.contact-thanks {
  padding: var(--section-padding) 0;
}

.contact-thanks-wrap {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

.contact-thanks-icon {
  width: 80px;
  height: 80px;
  border: 2px solid var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin: 0 auto 32px;
}

.contact-thanks-title {
  font-size: clamp(1.4rem, 3vw, 1.8rem);
  font-weight: 700;
  margin-bottom: 20px;
}

.contact-thanks-desc {
  color: var(--color-light-gray);
  line-height: 2;
  margin-bottom: 40px;
}

.contact-thanks-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

@media (max-width: 768px) {
  .contact-confirm-row {
    flex-direction: column;
    gap: 6px;
  }
  .contact-confirm-label {
    width: auto;
  }
  .contact-confirm-actions {
    flex-direction: column;
    align-items: stretch;
  }
}

/* Custom Cursor (Corporate site) */
body:not(.is-ai-knowledge-page) {
  cursor: none;
}

body:not(.is-ai-knowledge-page) a,
body:not(.is-ai-knowledge-page) button,
body:not(.is-ai-knowledge-page) .btn {
  cursor: none;
}

.occur-custom-cursor {
  position: fixed;
  top: 0;
  left: 0;
  width: 20px;
  height: 20px;
  border: 1px solid var(--color-white);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9998;
  mix-blend-mode: difference;
  transition: width 0.3s var(--ease-out-expo), height 0.3s var(--ease-out-expo);
  will-change: transform;
}

.occur-custom-cursor.is-hovering {
  width: 40px;
  height: 40px;
}


/* ========================================
   Responsive Breakpoints
   ======================================== */

/* Tablet */
@media (max-width: 1024px) {
  .service-card--main {
    grid-template-columns: 1fr;
  }

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

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

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

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

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

  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
  }

  .steps-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .step-card:nth-child(3)::after {
    display: none;
  }

  .security-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

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

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

  .sub-service-grid {
    grid-template-columns: 1fr;
  }

  .service-section-inner,
  .service-section-inner--reverse {
    grid-template-columns: 1fr;
  }
  .service-section-inner--reverse .service-section-text { order: 1; }
  .service-section-inner--reverse .service-section-image { order: 2; }

  /* AI Knowledge LP - Tablet */
  .aik-problem-grid { grid-template-columns: repeat(2, 1fr); }
  .aik-value-grid { grid-template-columns: repeat(2, 1fr); }
  .aik-compare-grid { grid-template-columns: 1fr; }
  .aik-support-grid { grid-template-columns: repeat(2, 1fr); }
  .aik-security-grid { grid-template-columns: repeat(3, 1fr); }
  .aik-effects-grid { grid-template-columns: repeat(2, 1fr); }
  .aik-sim-summary { grid-template-columns: 1fr; }
  .aik-pricing-grid { grid-template-columns: 1fr; max-width: 480px; margin-left: auto; margin-right: auto; }
  .aik-demo-sidebar { display: none; }
}

/* Mobile */
@media (max-width: 768px) {
  .nav-desktop {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .nav-mobile {
    display: flex;
  }

  .header-inner {
    height: 64px;
  }

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

  .about-teaser-image {
    max-width: 300px;
    margin: 0 auto;
  }

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

  .footer-bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

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

  .ceo-image {
    max-width: 280px;
    margin: 0 auto;
  }

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

  .step-card::after {
    display: none;
  }

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

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

  .service-card {
    padding: 40px 24px;
  }

  .news-item {
    flex-direction: column;
    gap: 8px;
  }

  .news-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

  .archive-item {
    flex-direction: column;
    gap: 8px;
  }

  .hero-content {
    text-align: left;
    padding: 0 24px;
    box-sizing: border-box;
    width: 100%;
    max-width: 100vw;
  }

  .hero-copy-en {
    font-size: clamp(3.5rem, 18vw, 6rem);
  }

  .hero-line-break {
    display: block;
  }

  .hero-word-space {
    display: none;
  }

  .hero-copy-ja {
    text-align: left;
  }

  .hero-br-mobile {
    display: block;
  }

  .hero-cta {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
  }

  .hero-cta .btn {
    width: 100%;
    max-width: none;
    justify-content: center;
    box-sizing: border-box;
  }

  .contact-form-wrap {
    padding: 32px 24px;
  }

  .page-hero {
    padding-top: 120px;
  }

  .service-hero {
    padding-top: 120px;
  }

  .single-header {
    padding-top: 120px;
  }

  .pricing-grid {
    max-width: 100%;
  }

  /* AI Knowledge LP - Mobile */
  .aik-hero-cta { flex-direction: column; align-items: center; }
  .aik-hero-cta .aik-btn { width: 100%; max-width: 300px; }
  .aik-problem-grid { grid-template-columns: 1fr; }
  .aik-value-grid { grid-template-columns: 1fr; }
  .aik-support-grid { grid-template-columns: 1fr; }
  .aik-security-grid { grid-template-columns: repeat(2, 1fr); }
  .aik-pricing-grid { max-width: 100%; }
  .aik-demo { margin-top: 32px; }
  .aik-pain-row { grid-template-columns: 1fr; }
  .aik-effects-grid { grid-template-columns: 1fr; }
  .aik-sim-table { font-size: 0.8rem; }
  .aik-sim-summary { grid-template-columns: 1fr; }
  .aik-lp-header .container { height: 56px; }
  .aik-hero { padding-top: 100px; }

  .occur-custom-cursor {
    display: none;
  }

  body:not(.is-ai-knowledge-page) {
    cursor: auto;
  }

  body:not(.is-ai-knowledge-page) a,
  body:not(.is-ai-knowledge-page) button,
  body:not(.is-ai-knowledge-page) .btn {
    cursor: pointer;
  }
}

/* Small mobile */
@media (max-width: 480px) {
  .hero-copy-en {
    font-size: clamp(3rem, 16vw, 5rem);
  }

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

  .page-hero .page-title-en {
    font-size: 2.5rem;
  }

  /* AI Knowledge LP - Small mobile */
  .aik-hero-title { font-size: clamp(1.5rem, 7vw, 2rem); }
  .aik-security-grid { grid-template-columns: 1fr; }
  .aik-step { gap: 16px; }
  .aik-step-num { width: 36px; height: 36px; font-size: 0.9rem; }
  .aik-step::before { left: 17px; }
}