/* ==========================================================================
   REMIUM Corporate Site - Design System & Styles
   Version: 1.0
   Concept: "Humanity meets Technology"
   ========================================================================== */

/* ---------- CSS Custom Properties (Design Tokens) ---------- */
:root {
    /* Colors */
    --color-bg-primary: #0a0a0a;
    --color-bg-secondary: #1a1a1a;
    --color-bg-light: #FFFFFF;
    --color-text-primary: #FFFFFF;
    --color-text-secondary: #999999;
    --color-text-dark: #0a0a0a;
    --color-accent-blue-start: #00C6FF;
    --color-accent-blue-end: #0072FF;
    --color-accent-gold-start: #F7971E;
    --color-accent-gold-end: #FFD200;
    --color-accent-purple-start: #7F00FF;
    --color-accent-purple-end: #E100FF;
    --color-glow: rgba(255, 255, 255, 0.2);

    /* Typography */
    --font-en: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-ja: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', sans-serif;
    --font-weight-light: 300;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    --font-weight-black: 900;
    --letter-spacing-tight: -0.04em;
    --letter-spacing-normal: -0.02em;
    --line-height-body: 1.8;

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 6rem;
    --space-2xl: 8rem;
    --space-3xl: 12rem;

    /* Transitions */
    --ease-apple: cubic-bezier(0.25, 0.1, 0.25, 1.0);
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --duration-fast: 0.3s;
    --duration-normal: 0.6s;
    --duration-slow: 1.0s;
    --duration-slower: 1.2s;

    /* Layout */
    --header-height: 64px;
    --container-max: 1200px;
    --container-padding: 2rem;

    /* Z-index */
    --z-loader: 10000;
    --z-mobile-menu: 9000;
    --z-header: 8000;
    --z-modal: 7000;
    --z-progress: 7500;
}

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

html {
    scroll-behavior: auto; /* GSAP handles smooth scrolling */
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

body {
    font-family: var(--font-ja);
    font-weight: var(--font-weight-regular);
    line-height: var(--line-height-body);
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    overflow-x: hidden;
}

body.loading {
    overflow: hidden;
    height: 100vh;
}

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

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

ul, ol {
    list-style: none;
}

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

/* ---------- LOADER ---------- */
.loader {
    position: fixed;
    inset: 0;
    z-index: var(--z-loader);
    background: var(--color-bg-light);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.8s var(--ease-apple), visibility 0.8s;
}

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

.loader-inner {
    text-align: center;
    width: 320px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0;
}

.loader-svg {
    width: 280px;
    height: 50px;
    overflow: visible;
}

.loader-text-svg {
    font-family: var(--font-en);
    font-weight: var(--font-weight-black);
    font-size: 36px;
    fill: var(--color-bg-primary);
    letter-spacing: var(--letter-spacing-tight);
}

.loader-logo {
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
}

.loader-logo-img {
    height: 44px;
    width: auto;
    object-fit: contain;
    display: block;
    margin: 0 auto;
    /* ローダーは白背景なのでロゴを反転して黒文字に */
    filter: invert(1);
}

.loader-progress {
    width: 200px;
    height: 1px;
    background: rgba(0, 0, 0, 0.1);
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: 0.75rem;
}

.loader-progress-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--color-accent-blue-start), var(--color-accent-blue-end));
    border-radius: 2px;
    transition: width 0.3s var(--ease-apple);
}

.loader-status {
    font-family: var(--font-en);
    font-size: 11px;
    color: rgba(0, 0, 0, 0.35);
    letter-spacing: 0.2em;
    text-transform: uppercase;
}

/* ローダー装飾ライン */
.loader-line-wrap {
    width: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.75rem;
}

.loader-line-bar {
    width: 0%;
    height: 1px;
    background: linear-gradient(90deg, var(--color-accent-blue-start), var(--color-accent-blue-end));
    animation: loaderLineExpand 1.2s var(--ease-out) forwards;
    animation-delay: 0.3s;
}

@keyframes loaderLineExpand {
    from { width: 0%; }
    to   { width: 100%; }
}

/* ---------- SCROLL PROGRESS BAR ---------- */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    z-index: var(--z-progress);
    background: transparent;
    opacity: 0;
    transition: opacity var(--duration-fast) var(--ease-apple);
}

.scroll-progress.visible {
    opacity: 1;
}

.scroll-progress-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--color-accent-blue-start), var(--color-accent-blue-end));
    will-change: width;
}

/* ---------- HEADER ---------- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: var(--z-header);
    padding: 0 var(--container-padding);
    height: var(--header-height);
    transition: background var(--duration-fast) var(--ease-apple),
                backdrop-filter var(--duration-fast) var(--ease-apple);
}

.header.scrolled {
    background: rgba(10, 10, 10, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(255,255,255,0.04);
}

/* scrolled: 黒ガラスヘッダーは白文字のまま */
.header.scrolled .nav-links a {
    color: rgba(255, 255, 255, 0.6);
}
.header.scrolled .nav-links a:hover {
    color: rgba(255, 255, 255, 1);
}
.header.scrolled .nav-links a::after {
    background: rgba(255, 255, 255, 0.8);
}
.header.scrolled .nav-cta {
    border-color: rgba(255, 255, 255, 0.3) !important;
    color: rgba(255, 255, 255, 0.9) !important;
}
.header.scrolled .nav-cta:hover {
    background: rgba(255, 255, 255, 0.08);
}
.header.scrolled .logo-img {
    filter: none;
}
.header.scrolled .hamburger-line {
    background: rgba(255, 255, 255, 0.8);
}

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

.nav-logo {
    display: flex;
    align-items: center;
    z-index: 10;
}

.logo-text {
    font-family: var(--font-en);
    font-weight: var(--font-weight-black);
    font-size: 22px;
    letter-spacing: var(--letter-spacing-tight);
    color: var(--color-text-primary);
}

.logo-img {
    height: 28px;
    width: auto;
    object-fit: contain;
    display: block;
    /* 透明背景の白文字ロゴをそのまま表示（暗い背景用） */
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.nav-links a {
    font-family: var(--font-en);
    font-size: 14px;
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    transition: color var(--duration-fast) var(--ease-apple);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-text-primary);
    transition: width var(--duration-fast) var(--ease-apple);
}

.nav-links a:hover {
    color: var(--color-text-primary);
}

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

.nav-cta {
    padding: 8px 20px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 100px;
    color: var(--color-text-primary) !important;
    transition: all var(--duration-fast) var(--ease-apple);
}

.nav-cta:hover {
    background: var(--color-text-primary);
    color: var(--color-bg-primary) !important;
}

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

/* Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 6px;
    width: 28px;
    height: 28px;
    justify-content: center;
    z-index: 10;
}

.hamburger-line {
    display: block;
    width: 100%;
    height: 1.5px;
    background: var(--color-text-primary);
    transition: all var(--duration-fast) var(--ease-apple);
    transform-origin: center;
}

.hamburger.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

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

.hamburger.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    inset: 0;
    z-index: var(--z-mobile-menu);
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--duration-normal) var(--ease-apple);
}

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

.mobile-menu-links {
    text-align: center;
}

.mobile-menu-links li {
    margin-bottom: var(--space-md);
    opacity: 0;
    transform: translateY(20px);
}

.mobile-menu.active .mobile-menu-links li {
    opacity: 1;
    transform: translateY(0);
    transition: all var(--duration-normal) var(--ease-out);
}

.mobile-menu.active .mobile-menu-links li:nth-child(1) { transition-delay: 0.1s; }
.mobile-menu.active .mobile-menu-links li:nth-child(2) { transition-delay: 0.15s; }
.mobile-menu.active .mobile-menu-links li:nth-child(3) { transition-delay: 0.2s; }
.mobile-menu.active .mobile-menu-links li:nth-child(4) { transition-delay: 0.25s; }
.mobile-menu.active .mobile-menu-links li:nth-child(5) { transition-delay: 0.3s; }
.mobile-menu.active .mobile-menu-links li:nth-child(6) { transition-delay: 0.35s; }
.mobile-menu.active .mobile-menu-links li:nth-child(7) { transition-delay: 0.4s; }

.mobile-menu-links a {
    font-family: var(--font-en);
    font-size: 32px;
    font-weight: var(--font-weight-bold);
    letter-spacing: var(--letter-spacing-tight);
}

.mobile-cta {
    display: inline-block;
    padding: 12px 40px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 100px;
    font-size: 18px !important;
    margin-top: var(--space-md);
}

/* ---------- SECTION BASE ---------- */
.section {
    position: relative;
    width: 100%;
    overflow: hidden;
}

/* ---------- SECTION 01: HERO ---------- */
.section-hero {
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-primary);
}

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

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 0 var(--container-padding);
}

.hero-title {
    margin-bottom: var(--space-md);
}

.hero-title-en {
    display: block;
    font-family: var(--font-en);
    font-size: clamp(2.5rem, 7vw, 5.5rem);
    font-weight: var(--font-weight-black);
    letter-spacing: var(--letter-spacing-tight);
    line-height: 1.1;
    margin-bottom: var(--space-sm);
    opacity: 0;
}

.hero-title-ja {
    display: block;
    font-family: var(--font-ja);
    font-size: clamp(1.2rem, 3vw, 2rem);
    font-weight: var(--font-weight-bold);
    letter-spacing: 0.1em;
    color: var(--color-text-secondary);
    opacity: 0;
}

.hero-subtitle {
    font-size: clamp(0.9rem, 1.5vw, 1.1rem);
    color: var(--color-text-secondary);
    line-height: 1.8;
    opacity: 0;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    opacity: 0;
    animation: scrollBounce 2s var(--ease-apple) infinite;
}

.scroll-indicator-mouse {
    width: 24px;
    height: 38px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 12px;
    position: relative;
}

.scroll-indicator-wheel {
    width: 3px;
    height: 8px;
    background: rgba(255, 255, 255, 0.6);
    border-radius: 3px;
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    animation: scrollWheel 2s var(--ease-apple) infinite;
}

.scroll-indicator-text {
    font-family: var(--font-en);
    font-size: 11px;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.4);
}

@keyframes scrollBounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
}

@keyframes scrollWheel {
    0% { opacity: 1; transform: translateX(-50%) translateY(0); }
    100% { opacity: 0; transform: translateX(-50%) translateY(12px); }
}

/* ---------- SECTION 02: PHILOSOPHY ---------- */
.section-philosophy {
    height: 300vh;
    background: var(--color-bg-primary);
}

.philosophy-container {
    position: sticky;
    top: 0;
    height: 100vh;
    width: 100%;
    overflow: hidden;
}

.philosophy-panel {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
}

.philosophy-panel:first-child {
    opacity: 1;
}

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

.philosophy-bg-possibility {
    background: radial-gradient(ellipse at 30% 50%, rgba(0, 198, 255, 0.08) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 60%, rgba(0, 114, 255, 0.06) 0%, transparent 50%);
}

.philosophy-bg-partnership {
    background: radial-gradient(ellipse at 50% 40%, rgba(0, 198, 255, 0.06) 0%, transparent 50%),
                radial-gradient(ellipse at 30% 70%, rgba(0, 114, 255, 0.08) 0%, transparent 60%);
}

.philosophy-bg-progress {
    background: radial-gradient(ellipse at 50% 30%, rgba(255, 255, 255, 0.05) 0%, transparent 50%),
                radial-gradient(ellipse at 60% 80%, rgba(0, 198, 255, 0.06) 0%, transparent 60%);
}

.philosophy-content {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    padding: 0 var(--container-padding);
    max-width: var(--container-max);
    width: 100%;
}

.philosophy-letter {
    font-family: var(--font-en);
    font-size: clamp(8rem, 20vw, 16rem);
    font-weight: var(--font-weight-black);
    line-height: 1;
    color: var(--color-text-primary);
    opacity: 0.1;
    transform: scale(2);
    will-change: transform, opacity;
}

.philosophy-detail {
    opacity: 0;
    transform: translateX(30px);
}

.philosophy-word {
    font-family: var(--font-en);
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: var(--font-weight-bold);
    letter-spacing: var(--letter-spacing-tight);
    line-height: 1.2;
    margin-bottom: var(--space-sm);
}

.philosophy-prefix {
    color: var(--color-accent-blue-start);
}

.philosophy-dash {
    display: inline-block;
    margin: 0 0.5em;
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-light);
}

.philosophy-ja {
    font-family: var(--font-ja);
    font-size: 0.5em;
    font-weight: var(--font-weight-bold);
}

.philosophy-desc {
    font-size: clamp(1rem, 1.5vw, 1.2rem);
    color: var(--color-text-secondary);
    line-height: 2;
}

/* ---------- SECTION 03: BRAND STORY ---------- */
.section-brand {
    height: 400vh;
    background: var(--color-bg-primary);
}

.brand-container {
    position: sticky;
    top: 0;
    height: 100vh;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.brand-stage {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.brand-text-premium {
    position: relative;
    z-index: 1;
    font-family: var(--font-en);
    font-size: clamp(4rem, 12vw, 10rem);
    font-weight: var(--font-weight-black);
    letter-spacing: var(--letter-spacing-tight);
    line-height: 1;
    white-space: nowrap;
}

.brand-p {
    display: inline-block;
    color: var(--color-text-primary);
    will-change: transform, opacity;
}

.brand-remium {
    display: inline-block;
    color: var(--color-text-primary);
    will-change: opacity, filter;
}

.brand-message {
    position: absolute;
    z-index: 2;
    text-align: center;
    padding: 0 var(--container-padding);
    opacity: 0;
    max-width: 800px;
}

.brand-message p {
    font-size: clamp(1.1rem, 2vw, 1.4rem);
    line-height: 2;
    color: var(--color-text-secondary);
}

.brand-message em {
    color: var(--color-accent-blue-start);
    font-style: normal;
    font-weight: var(--font-weight-bold);
}

.brand-three-p {
    display: flex;
    gap: var(--space-lg);
    justify-content: center;
    margin-bottom: var(--space-lg);
    flex-wrap: wrap;
}

.brand-three-p-item {
    font-family: var(--font-en);
    font-size: clamp(1.2rem, 2.5vw, 2rem);
    font-weight: var(--font-weight-bold);
    letter-spacing: var(--letter-spacing-tight);
    opacity: 0;
    transform: translateY(20px);
}

.brand-three-p-item[data-p="possibility"] { color: var(--color-accent-blue-start); }
.brand-three-p-item[data-p="partnership"] { color: var(--color-accent-gold-start); }
.brand-three-p-item[data-p="progress"] { color: var(--color-accent-purple-start); }

.brand-mission {
    font-size: clamp(1rem, 1.5vw, 1.2rem) !important;
    color: var(--color-text-secondary) !important;
    line-height: 2 !important;
}

/* ---------- SECTION 04: CORE MESSAGE ---------- */
.section-core {
    height: 300vh;
    background: var(--color-bg-primary);
}

.core-container {
    position: sticky;
    top: 0;
    height: 100vh;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.core-split {
    display: flex;
    width: 100%;
    height: 100%;
    position: relative;
    z-index: 1;
}

.core-side {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    will-change: transform;
}

.core-humanity {
    transform: translateX(-100%);
    background: linear-gradient(135deg, rgba(255, 200, 150, 0.05) 0%, transparent 60%);
}

.core-technology {
    transform: translateX(100%);
    background: linear-gradient(225deg, rgba(0, 198, 255, 0.05) 0%, transparent 60%);
}

.core-visual {
    text-align: center;
    opacity: 0.8;
}

.core-visual svg {
    width: clamp(120px, 20vw, 200px);
    height: clamp(120px, 20vw, 200px);
}

.core-label {
    display: block;
    margin-top: var(--space-md);
    font-family: var(--font-en);
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    font-weight: var(--font-weight-bold);
    letter-spacing: var(--letter-spacing-tight);
    color: var(--color-text-secondary);
}

.core-divider {
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    transform: translateX(-50%);
    z-index: 2;
}

.core-light-line {
    width: 100%;
    height: 0%;
    background: linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.8), transparent);
    will-change: height;
}

.core-flash {
    position: absolute;
    inset: 0;
    z-index: 3;
    background: white;
    opacity: 0;
    pointer-events: none;
    will-change: opacity;
}

.core-merged {
    position: absolute;
    z-index: 4;
    text-align: center;
    padding: 0 var(--container-padding);
    opacity: 0;
    will-change: opacity, transform;
}

.core-title {
    font-family: var(--font-en);
    font-size: clamp(2.5rem, 6vw, 5rem);
    font-weight: var(--font-weight-black);
    letter-spacing: var(--letter-spacing-tight);
    line-height: 1.1;
    margin-bottom: var(--space-sm);
    background: linear-gradient(135deg, rgba(255, 200, 150, 0.9), #FFFFFF, rgba(0, 198, 255, 0.9));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.core-subtitle {
    font-family: var(--font-ja);
    font-size: clamp(1.2rem, 2vw, 1.6rem);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
}

.core-desc {
    font-size: clamp(0.9rem, 1.3vw, 1.1rem);
    color: var(--color-text-secondary);
    line-height: 2;
}

/* ---------- SECTION 08: THE TRUTH ── 技術だけでは足りない ---------- */
.section-truth {
    height: 350vh;
    background: var(--color-bg-primary);
    position: relative;
}

.truth-container {
    position: sticky;
    top: 0;
    height: 100vh;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.truth-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

/* ── Phase A: 技術 vs 組織 ── */
.truth-phase {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    z-index: 1;
}

.truth-phase-a {
    flex-direction: row;
    gap: 0;
}

.truth-split-line {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 2px;
    height: 0;
    background: linear-gradient(to bottom,
        transparent,
        rgba(255, 255, 255, 0.3) 20%,
        rgba(255, 255, 255, 0.6) 50%,
        rgba(255, 255, 255, 0.3) 80%,
        transparent);
}

.truth-word {
    font-family: var(--font-ja);
    font-size: clamp(4rem, 8vw, 8rem);
    font-weight: var(--font-weight-black);
    letter-spacing: 0.1em;
    will-change: transform, opacity;
}

.truth-word-skill {
    position: absolute;
    right: calc(50% + 40px);
    color: var(--color-text-primary);
}

.truth-word-org {
    position: absolute;
    left: calc(50% + 40px);
    color: #333333;
}

/* ── Phase B: 問いかけ ── */
.truth-phase-b {
    flex-direction: column;
    text-align: center;
    gap: var(--space-lg);
}

.truth-question {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.truth-question-line {
    font-family: var(--font-ja);
    font-size: clamp(1.1rem, 2.2vw, 1.6rem);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    opacity: 0;
    will-change: opacity, transform;
}

.truth-statement {
    font-family: var(--font-ja);
    font-size: clamp(1.5rem, 3.5vw, 2.8rem);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    opacity: 0;
    will-change: opacity;
    line-height: 1.4;
}

/* ── Phase C: 方程式 (クライマックス) ── */
.truth-phase-c {
    flex-direction: column;
    text-align: center;
    gap: 0;
}

.truth-equation {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: clamp(1rem, 3vw, 2.5rem);
    flex-wrap: wrap;
}

.truth-eq-left,
.truth-eq-right {
    font-family: var(--font-ja);
    font-size: clamp(1.8rem, 5vw, 4rem);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    opacity: 0;
    will-change: transform, opacity;
}

.truth-eq-multiply {
    font-family: var(--font-en);
    font-size: clamp(2rem, 5vw, 4rem);
    font-weight: var(--font-weight-light);
    background: linear-gradient(135deg, var(--color-accent-blue-start), var(--color-accent-blue-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0;
    will-change: transform, opacity;
    filter: drop-shadow(0 0 20px rgba(0, 198, 255, 0.5));
}

.truth-eq-equals {
    font-family: var(--font-en);
    font-size: clamp(1.8rem, 4vw, 3rem);
    color: rgba(255, 255, 255, 0.5);
    margin: var(--space-md) 0 var(--space-sm);
    opacity: 0;
    will-change: opacity;
}

.truth-eq-result {
    font-family: var(--font-ja);
    font-size: clamp(2.5rem, 8vw, 7rem);
    font-weight: var(--font-weight-black);
    background: linear-gradient(135deg, var(--color-accent-blue-start), var(--color-accent-blue-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0;
    will-change: opacity;
    letter-spacing: var(--letter-spacing-tight);
    position: relative;
}

/* リップルエフェクト */
.truth-ripple {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    width: 200vmax;
    height: 200vmax;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 198, 255, 0.08) 0%, transparent 70%);
    pointer-events: none;
    will-change: transform, opacity;
}

/* 放射光 */
.truth-radial-light {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at center, rgba(0, 198, 255, 0.06) 0%, transparent 60%);
    opacity: 0;
    pointer-events: none;
    will-change: opacity;
}

/* ── Phase D: 宣言 ── */
.truth-phase-d {
    flex-direction: column;
    text-align: center;
    padding: 0 var(--container-padding);
    max-width: 900px;
}

.truth-equation-compact {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    flex-wrap: wrap;
    font-family: var(--font-ja);
    font-size: clamp(0.9rem, 1.8vw, 1.3rem);
    font-weight: var(--font-weight-semibold);
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: var(--space-xl);
    padding: var(--space-sm) var(--space-md);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 60px;
    background: rgba(255, 255, 255, 0.02);
    opacity: 0;
    will-change: opacity;
}

.truth-eq-multiply-sm {
    background: linear-gradient(135deg, var(--color-accent-blue-start), var(--color-accent-blue-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.truth-eq-equals-sm {
    color: rgba(255, 255, 255, 0.3);
    margin: 0 0.3rem;
}

.truth-eq-result-sm {
    background: linear-gradient(135deg, var(--color-accent-blue-start), var(--color-accent-blue-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: var(--font-weight-bold);
}

.truth-declaration {
    opacity: 0;
    will-change: opacity;
}

.truth-decl-line {
    font-family: var(--font-ja);
    font-size: clamp(1.2rem, 2.5vw, 1.8rem);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-lg);
    line-height: 1.6;
}

.truth-decl-body {
    margin-bottom: var(--space-xl);
}

.truth-decl-body p {
    font-family: var(--font-ja);
    font-size: clamp(1rem, 1.8vw, 1.3rem);
    font-weight: var(--font-weight-regular);
    color: var(--color-text-secondary);
    line-height: 2;
}

.truth-decl-remium {
    padding-top: var(--space-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.truth-remium-logo {
    width: 120px;
    height: auto;
    margin-bottom: var(--space-md);
    opacity: 0.9;
}

.truth-decl-remium p {
    font-family: var(--font-ja);
    font-size: clamp(0.95rem, 1.5vw, 1.15rem);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    line-height: 1.9;
}

/* ---------- SECTION 09: OUR MISSION ---------- */
.section-mission {
    height: 200vh;
    background: var(--color-bg-primary);
    position: relative;
}

.mission-container {
    position: sticky;
    top: 0;
    height: 100vh;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 0 var(--container-padding);
}

.mission-phase-a {
    text-align: center;
    opacity: 0;
    will-change: opacity;
}

.mission-title-en {
    font-family: var(--font-en);
    font-size: clamp(2rem, 4.5vw, 3.5rem);
    font-weight: var(--font-weight-black);
    letter-spacing: var(--letter-spacing-tight);
    color: var(--color-text-primary);
    margin-bottom: var(--space-sm);
}

.mission-title-ja {
    font-family: var(--font-ja);
    font-size: clamp(1rem, 2vw, 1.5rem);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
}

.mission-phase-b {
    text-align: center;
    margin-top: var(--space-xl);
    opacity: 0;
    will-change: opacity;
}

.mission-line {
    font-family: var(--font-ja);
    font-size: clamp(1rem, 1.8vw, 1.3rem);
    font-weight: var(--font-weight-regular);
    color: var(--color-text-secondary);
    line-height: 2.2;
}

.mission-spacer {
    height: var(--space-md);
}

.mission-line-final {
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    font-size: clamp(1.1rem, 2vw, 1.5rem);
    opacity: 0;
    will-change: opacity;
}

/* ---------- Service card tagline ---------- */
.service-card-tagline {
    font-family: var(--font-ja);
    font-size: clamp(0.85rem, 1.2vw, 1rem);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-sm);
    line-height: 1.6;
    opacity: 0.85;
}

/* ---------- SECTION 10: SERVICES ---------- */
.section-services {
    min-height: 100vh;
    background: var(--color-bg-secondary);
    padding: var(--space-3xl) 0;
}

.services-header {
    text-align: center;
    margin-bottom: var(--space-xl);
    padding: 0 var(--container-padding);
}

.services-title {
    font-family: var(--font-en);
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: var(--font-weight-black);
    letter-spacing: var(--letter-spacing-tight);
    margin-bottom: var(--space-xs);
}

.services-subtitle {
    font-size: clamp(1rem, 1.5vw, 1.2rem);
    color: var(--color-text-secondary);
}

.services-track {
    overflow: visible;
}

.services-cards {
    display: flex;
    gap: var(--space-md);
    padding: 0 var(--container-padding);
    max-width: 1400px;
    margin: 0 auto;
    justify-content: center;
    flex-wrap: wrap;
}

/* Service Card */
.service-card {
    position: relative;
    width: 380px;
    min-height: 480px;
    border-radius: 24px;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
    cursor: pointer;
    transition: transform var(--duration-normal) var(--ease-out),
                box-shadow var(--duration-normal) var(--ease-out);
    will-change: transform;
    transform-style: preserve-3d;
    perspective: 1000px;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.3);
}

.service-card-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
    overflow: hidden;
}

.service-card-bg-aoai {
    background: linear-gradient(135deg, rgba(0, 198, 255, 0.05) 0%, rgba(0, 114, 255, 0.08) 100%);
}
/* ロゴ位置（上部）に青いグロー光を追加 */
.service-card-bg-aoai::after {
    content: '';
    position: absolute;
    top: 0px;
    left: var(--space-lg, 32px);
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: radial-gradient(ellipse at center,
        rgba(120,210,255,0.50) 0%,
        rgba(60,170,255,0.28) 45%,
        transparent 75%);
    filter: blur(24px);
    pointer-events: none;
}

.service-card-bg-theremium {
    background: linear-gradient(135deg, rgba(247, 151, 30, 0.05) 0%, rgba(255, 210, 0, 0.08) 100%);
}
/* ロゴ位置（上部）にゴールドのグロー光を追加 */
.service-card-bg-theremium::after {
    content: '';
    position: absolute;
    top: 0px;
    left: var(--space-lg, 32px);
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: radial-gradient(ellipse at center,
        rgba(255,230,120,0.55) 0%,
        rgba(212,175,55,0.32) 45%,
        transparent 75%);
    filter: blur(24px);
    pointer-events: none;
}

.service-card-bg-bizdra {
    background: linear-gradient(135deg, rgba(127, 0, 255, 0.05) 0%, rgba(225, 0, 255, 0.08) 100%);
}
/* ロゴ位置（上部）にゴールドのグロー光を追加 */
.service-card-bg-bizdra::after {
    content: '';
    position: absolute;
    top: 0px;
    left: var(--space-lg, 32px);
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: radial-gradient(ellipse at center,
        rgba(255,230,120,0.55) 0%,
        rgba(212,175,55,0.32) 45%,
        transparent 75%);
    filter: blur(24px);
    pointer-events: none;
}

.service-card-shine {
    position: absolute;
    inset: 0;
    z-index: 1;
    background: radial-gradient(600px circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
                rgba(255, 255, 255, 0.06), transparent 40%);
    opacity: 0;
    transition: opacity var(--duration-fast) var(--ease-apple);
}

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

.service-card-content {
    position: relative;
    z-index: 2;
    padding: var(--space-lg);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.service-card-icon {
    width: 80px;
    height: 80px;
    margin-bottom: var(--space-md);
}

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

/* ══════════════════════════════════════════
   サービスロゴ（Canvas透過処理 + ネオングロー）
   白背景完全除去・ネオン発光・黒背景対応
   ══════════════════════════════════════════ */

.service-logo-area {
    position: relative;
    width: 150px;
    height: 150px;
    margin-bottom: var(--space-lg);
    flex-shrink: 0;
    align-self: flex-start;
    /* canvasの中央配置用 */
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: visible; /* グローがはみ出すため */
}

/* Canvas要素のスタイル（ネオングローはJS側のshadowで描画済み） */
.service-logo-canvas {
    display: block;
    position: relative;
    z-index: 1;
    /* アスペクト比を保持: 長辺をコンテナに合わせる */
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    transition: transform 0.4s cubic-bezier(0.34,1.56,0.64,1),
                filter 0.35s ease;
}

/* ホバーで少し拡大＋浮き上がり */
.service-card:hover .service-logo-canvas {
    transform: scale(1.08) translateY(-4px);
}

/* ホバー時の追加グロー (CSS drop-shadow で補助) */
.service-card:hover .service-logo-area--theremium .service-logo-canvas,
.service-card:hover .service-logo-area--bizdra .service-logo-canvas {
    filter:
        drop-shadow(0 0 8px rgba(255, 200, 40, 0.7))
        drop-shadow(0 0 20px rgba(200, 150, 0, 0.4));
}
.service-card:hover .service-logo-area--aoai .service-logo-canvas {
    filter:
        drop-shadow(0 0 8px rgba(100, 180, 255, 0.7))
        drop-shadow(0 0 20px rgba(40, 120, 220, 0.4));
}

/* レガシー img 互換（フォールバック） */
.service-logo-img {
    display: block;
    position: relative;
    z-index: 1;
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
    mix-blend-mode: multiply;
    transition: transform 0.4s cubic-bezier(0.34,1.56,0.64,1),
                filter 0.35s ease;
}


.service-card-title {
    font-family: var(--font-en);
    font-size: 1.6rem;
    font-weight: var(--font-weight-bold);
    letter-spacing: var(--letter-spacing-normal);
    line-height: 1.3;
    margin-bottom: var(--space-md);
}

.service-card-list {
    margin-bottom: auto;
    padding-bottom: var(--space-md);
}

.service-card-list li {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    padding: 6px 0;
    position: relative;
    padding-left: 16px;
}

.service-card-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    transform: translateY(-50%);
}

[data-service="aoai"] .service-card-list li::before {
    background: linear-gradient(135deg, var(--color-accent-blue-start), var(--color-accent-blue-end));
}

[data-service="theremium"] .service-card-list li::before {
    background: linear-gradient(135deg, var(--color-accent-gold-start), var(--color-accent-gold-end));
}

[data-service="bizdra"] .service-card-list li::before {
    background: linear-gradient(135deg, var(--color-accent-purple-start), var(--color-accent-purple-end));
}

.service-card-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-en);
    font-size: 14px;
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-secondary);
    transition: all var(--duration-fast) var(--ease-apple);
    align-self: flex-start;
}

.service-card-btn:hover {
    color: var(--color-text-primary);
    gap: 12px;
}

/* Service Bokeh (THE REMIUM) */
.service-bokeh {
    position: absolute;
    inset: 0;
}

.service-bokeh::before,
.service-bokeh::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    filter: blur(40px);
    animation: bokehFloat 8s var(--ease-apple) infinite alternate;
}

.service-bokeh::before {
    width: 150px;
    height: 150px;
    background: rgba(247, 151, 30, 0.1);
    top: 20%;
    right: -20%;
}

.service-bokeh::after {
    width: 100px;
    height: 100px;
    background: rgba(255, 210, 0, 0.08);
    bottom: 10%;
    left: 10%;
    animation-delay: -3s;
}

@keyframes bokehFloat {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(20px, -20px) scale(1.2); }
}

/* ---------- SERVICE MODAL ---------- */
.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: var(--z-modal);
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--duration-normal) var(--ease-apple);
    padding: var(--container-padding);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--color-bg-secondary);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 20px;
    max-width: 600px;
    width: 100%;
    max-height: 80vh;
    overflow-y: auto;
    padding: var(--space-lg);
    position: relative;
    transform: translateY(30px) scale(0.95);
    transition: transform var(--duration-normal) var(--ease-out);
}

.modal-overlay.active .modal {
    transform: translateY(0) scale(1);
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 24px;
    color: var(--color-text-secondary);
    transition: color var(--duration-fast);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.modal-close:hover {
    color: var(--color-text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.modal-content h3 {
    font-family: var(--font-en);
    font-size: 1.8rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--space-sm);
}

.modal-content p {
    color: var(--color-text-secondary);
    line-height: 2;
    margin-bottom: var(--space-sm);
}

.modal-content ul {
    margin-bottom: var(--space-md);
}

.modal-content ul li {
    color: var(--color-text-secondary);
    padding: 8px 0;
    padding-left: 20px;
    position: relative;
}

.modal-content ul li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-accent-blue-start);
}

/* ---------- SECTION 06: VISION ---------- */
.section-vision {
    height: 480vh;   /* 6行 × 余裕をもたせて長めに */
    background: var(--color-bg-primary);
    position: relative;
}

.vision-bg {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 50% 80%, rgba(0, 198, 255, 0.03) 0%, transparent 60%),
                radial-gradient(ellipse at 50% 50%, rgba(255, 255, 255, 0.02) 0%, transparent 50%);
    opacity: 0;
    transition: opacity 1s var(--ease-apple);
}

.vision-container {
    position: sticky;
    top: 0;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 var(--container-padding);
}

.vision-lines {
    max-width: 800px;
    text-align: center;
}

.vision-line {
    font-family: var(--font-ja);
    font-size: clamp(1.8rem, 4vw, 3rem);
    font-weight: var(--font-weight-bold);
    line-height: 1.8;
    color: var(--color-text-primary);
    opacity: 0.12;
    transition: opacity 0.5s var(--ease-apple);
    will-change: opacity;
}

.vision-line.active {
    opacity: 1;
}

/* ---------- SECTION 07: CONTACT CTA (now before Company) ---------- */
.section-contact {
    height: 100vh;
    min-height: 500px;
    background: var(--color-bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ---------- SECTION 08: COMPANY (dark) ---------- */
.section-company {
    min-height: 100vh;
    background: var(--color-bg-primary);
    color: var(--color-text-primary);
    display: flex;
    align-items: center;
    padding: var(--space-3xl) 0;
}

.company-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    width: 100%;
}

.company-title {
    font-family: var(--font-en);
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: var(--font-weight-black);
    letter-spacing: var(--letter-spacing-tight);
    margin-bottom: var(--space-xl);
    color: var(--color-text-primary);
}

.company-table {
    width: 100%;
}

.company-row {
    display: grid;
    grid-template-columns: 160px 1fr;
    gap: var(--space-md);
    padding: var(--space-md) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    opacity: 0;
    transform: translateX(-20px);
}

.company-row:first-child {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.company-label {
    font-weight: var(--font-weight-semibold);
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.4);
}

.company-value {
    font-size: 1rem;
    color: var(--color-text-primary);
    line-height: 1.8;
}

.contact-container {
    text-align: center;
    padding: 0 var(--container-padding);
}

.contact-title {
    font-family: var(--font-ja);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: var(--font-weight-black);
    line-height: 1.3;
    margin-bottom: var(--space-sm);
    opacity: 0;
    transform: scale(0.8);
}

.contact-desc {
    font-size: clamp(0.9rem, 1.5vw, 1.1rem);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xl);
    opacity: 0;
}

.contact-btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 20px 48px;
    border-radius: 100px;
    font-family: var(--font-en);
    font-size: 18px;
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    position: relative;
    overflow: hidden;
    cursor: pointer;
    border: 1px solid rgba(255, 255, 255, 0.15);
    transition: border-color var(--duration-fast) var(--ease-apple);
    opacity: 0;
}

.contact-btn:hover {
    border-color: rgba(255, 255, 255, 0.3);
}

.contact-btn-bg {
    position: absolute;
    inset: -2px;
    border-radius: inherit;
    background: linear-gradient(135deg, var(--color-accent-blue-start), var(--color-accent-purple-end), var(--color-accent-gold-start), var(--color-accent-blue-end));
    background-size: 300% 300%;
    animation: gradientRotate 4s linear infinite;
    opacity: 0.3;
    z-index: 0;
    transition: opacity var(--duration-fast) var(--ease-apple);
}

.contact-btn:hover .contact-btn-bg {
    opacity: 0.5;
}

@keyframes gradientRotate {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.contact-btn-text,
.contact-btn-arrow {
    position: relative;
    z-index: 1;
}

/* ---------- FOOTER ---------- */
.footer {
    background: var(--color-bg-primary);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding: var(--space-xl) 0 var(--space-md);
}

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

.footer-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-xl);
    flex-wrap: wrap;
    gap: var(--space-md);
}

.footer-logo .logo-text {
    font-size: 20px;
}

.footer-logo-img {
    height: 24px;
    /* フッターは黒背景なのでロゴはそのまま（白文字透明背景PNG） */
    filter: none;
}

.footer-nav {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.footer-nav a {
    font-family: var(--font-en);
    font-size: 13px;
    color: rgba(255, 255, 255, 0.4);
    transition: color var(--duration-fast) var(--ease-apple);
}

.footer-nav a:hover {
    color: rgba(255, 255, 255, 0.9);
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--space-md);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.footer-copyright {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.25);
}

.footer-tagline {
    font-family: var(--font-en);
    font-size: 12px;
    color: rgba(255, 255, 255, 0.15);
    font-weight: var(--font-weight-medium);
    letter-spacing: 0.05em;
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 1279px) {
    .services-cards {
        gap: var(--space-md);
    }
    .service-card {
        width: 340px;
    }
}

@media (max-width: 767px) {
    :root {
        --container-padding: 1.5rem;
        --header-height: 56px;
    }

    .nav-links {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    /* Philosophy */
    .philosophy-content {
        flex-direction: column;
        text-align: center;
        gap: var(--space-md);
    }

    .philosophy-letter {
        font-size: 8rem;
    }

    .philosophy-detail {
        transform: translateX(0) translateY(20px);
    }

    /* Brand */
    .brand-text-premium {
        font-size: clamp(2.5rem, 10vw, 5rem);
    }

    .brand-three-p {
        flex-direction: column;
        gap: var(--space-md);
    }

    /* Core */
    .core-label {
        font-size: 1.2rem;
    }

    /* Truth */
    .truth-word {
        font-size: clamp(3rem, 12vw, 5rem);
    }

    .truth-word-skill {
        right: calc(50% + 20px);
    }

    .truth-word-org {
        left: calc(50% + 20px);
    }

    .truth-equation {
        gap: 0.8rem;
    }

    .truth-equation-compact {
        flex-direction: column;
        gap: 0.3rem;
        padding: var(--space-sm);
    }

    /* Mission */
    .section-mission {
        height: 180vh;
    }

    /* Services - Vertical Stack */
    .services-cards {
        flex-direction: column;
        align-items: center;
    }

    .service-card {
        width: 100%;
        max-width: 400px;
        min-height: auto;
    }

    /* Company */
    .company-row {
        grid-template-columns: 1fr;
        gap: var(--space-xs);
    }

    .company-label {
        font-size: 0.8rem;
    }

    /* Footer */
    .footer-top {
        flex-direction: column;
        align-items: flex-start;
    }

    .footer-nav {
        gap: var(--space-sm);
    }

    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    .hero-title-en {
        font-size: 2rem;
    }

    .hero-title-ja {
        font-size: 1rem;
    }

    .philosophy-letter {
        font-size: 5rem;
    }

    .vision-line {
        font-size: 1.4rem;
    }
}

/* ---------- ACCESSIBILITY: Reduced Motion ---------- */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    .scroll-indicator {
        animation: none;
    }

    .scroll-indicator-wheel {
        animation: none;
    }

    .service-bokeh::before,
    .service-bokeh::after {
        animation: none;
    }

    .contact-btn-bg {
        animation: none;
    }

    .hero-title-en,
    .hero-title-ja,
    .hero-subtitle,
    .scroll-indicator {
        opacity: 1 !important;
    }

    .philosophy-panel {
        opacity: 1 !important;
    }

    .philosophy-letter {
        transform: none !important;
        opacity: 1 !important;
    }

    .philosophy-detail {
        opacity: 1 !important;
        transform: none !important;
    }

    .vision-line {
        opacity: 1 !important;
    }

    .company-row {
        opacity: 1 !important;
        transform: none !important;
    }

    .contact-title,
    .contact-desc,
    .contact-btn {
        opacity: 1 !important;
        transform: none !important;
    }
}

/* ---------- Focus Styles (Accessibility) ---------- */
:focus-visible {
    outline: 2px solid var(--color-accent-blue-start);
    outline-offset: 4px;
    border-radius: 4px;
}

.section-company :focus-visible {
    outline-color: var(--color-accent-blue-end);
}

/* ---------- Selection ---------- */
::selection {
    background: rgba(0, 198, 255, 0.3);
    color: var(--color-text-primary);
}

.section-company ::selection {
    background: rgba(0, 114, 255, 0.2);
    color: var(--color-text-dark);
}