/* ============================================
   Base Styles & Variables
   ============================================ */
:root {
    --color-primary: #0a1628;
    --color-primary-light: #1a2d4a;
    --color-primary-dark: #050d17;
    --color-accent: #3b82f6;
    --color-accent-light: #60a5fa;
    --color-accent-dark: #2563eb;
    --color-text: #1f2937;
    --color-text-light: #6b7280;
    --color-text-inverse: #ffffff;
    --color-bg: #ffffff;
    --color-bg-alt: #f8fafc;
    --color-border: #e5e7eb;

    --font-sans: 'Inter', 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;

    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 5rem;
    --spacing-3xl: 8rem;

    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    --transition-slower: 0.8s cubic-bezier(0.4, 0, 0.2, 1);

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

body.loading {
    overflow: hidden;
}

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

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

ul {
    list-style: none;
}

/* ============================================
   Loading Screen
   ============================================ */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.8s ease, visibility 0.8s ease;
}

.loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

.loading-logo {
    text-align: center;
}

.loading-text {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: 0.1em;
    display: block;
    margin-bottom: var(--spacing-md);
    animation: loadingPulse 1.5s ease-in-out infinite;
}

.loading-bar {
    width: 200px;
    height: 2px;
    background: rgba(26, 45, 74, 0.1);
    border-radius: 3px;
    overflow: hidden;
    margin: 0 auto;
}

.loading-bar::after {
    content: '';
    display: block;
    width: 40%;
    height: 100%;
    background: var(--color-primary);
    animation: loadingProgress 1s ease-in-out infinite;
}

@keyframes loadingPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

@keyframes loadingProgress {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(350%); }
}

/* ============================================
   Custom Cursor
   ============================================ */
.cursor,
.cursor-follower {
    position: fixed;
    pointer-events: none;
    z-index: 9998;
    display: none;
}

@media (hover: hover) and (pointer: fine) {
    .cursor,
    .cursor-follower {
        display: block;
    }

    .cursor {
        width: 8px;
        height: 8px;
        background: var(--color-accent);
        border-radius: 50%;
        transform: translate(-50%, -50%);
        transition: transform 0.1s ease, opacity 0.3s ease, background 0.3s ease;
        box-shadow: 0 0 8px rgba(59, 130, 246, 0.5);
    }

    .cursor-follower {
        width: 40px;
        height: 40px;
        border: 1.5px solid var(--color-accent);
        border-radius: 50%;
        transform: translate(-50%, -50%);
        transition: transform 0.15s ease, width 0.3s ease, height 0.3s ease, opacity 0.3s ease;
        opacity: 0.6;
        box-shadow: 0 0 12px rgba(59, 130, 246, 0.2);
    }

    .cursor.hovering {
        transform: translate(-50%, -50%) scale(2);
        background: var(--color-accent-light);
    }

    .cursor-follower.hovering {
        width: 60px;
        height: 60px;
        opacity: 0.4;
        border-color: var(--color-accent-light);
    }
}

/* ============================================
   Layout
   ============================================ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.section {
    padding: var(--spacing-3xl) 0;
    position: relative;
}

/* ============================================
   Header
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: transparent;
    transition: background var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
}

.header--solid {
    background: var(--color-primary);
}

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

.header--solid .nav-link:hover {
    color: var(--color-accent-light);
}

.header--solid .hamburger span {
    background: var(--color-text-inverse);
}

.header.hidden {
    transform: translateY(-100%);
}

.header .logo-text {
    color: #ffffff;
}

.header .nav-link {
    color: rgba(255, 255, 255, 0.9);
}

.header .hamburger span {
    background: #ffffff;
}

.header .logo-img {
    filter: brightness(0) invert(1);
}

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

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

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

.header.scrolled .logo-img {
    filter: none;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    max-width: 1400px;
    margin: 0 auto;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: 0.02em;
    transition: color var(--transition-base);
}

.logo-img {
    height: 36px;
    width: auto;
    transition: opacity var(--transition-base);
}

.logo-img:hover {
    opacity: 0.8;
}

.logo-img--light {
    filter: brightness(0) invert(1);
}

.nav-list {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-link {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text);
    letter-spacing: 0.05em;
    padding: var(--spacing-xs) 0;
    position: relative;
    transition: color var(--transition-base);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: #ffffff;
    transition: width var(--transition-base);
}

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

.header.scrolled .nav-link::after {
    background: var(--color-primary);
}

.nav-link--cta {
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-sm);
    color: #ffffff !important;
    transition: background var(--transition-base), transform var(--transition-base);
}

.nav-link--cta::after {
    display: none;
}

.nav-link--cta:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
}

.header.scrolled .nav-link--cta {
    background: var(--color-primary);
    border: 1px solid var(--color-primary);
    color: var(--color-text-inverse) !important;
}

.header.scrolled .nav-link--cta:hover {
    background: var(--color-primary-light);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-primary);
    transition: transform var(--transition-base), opacity var(--transition-base);
}

/* ============================================
   Hero Section - White Background with 3D
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    background: var(--color-bg);
    overflow: hidden;
}

#hero-canvas-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    background: linear-gradient(135deg, #0a0a1a 0%, #0f0f2e 50%, #0a0a1a 100%);
}

#hero-canvas-container canvas {
    display: block;
    width: 100%;
    height: 100%;
}

.hero-content {
    position: relative;
    z-index: 2;
    padding: var(--spacing-lg);
    padding-left: 10%;
    max-width: 60%;
}

.hero-title {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 700;
    line-height: 1.1;
    color: #ffffff;
    margin-bottom: var(--spacing-lg);
}

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

.text-mask {
    display: inline-block;
    overflow: hidden;
}

.text-inner {
    display: inline-block;
    transform: translateY(100%);
    animation: revealText 1s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.hero-title-line:nth-child(1) .text-inner {
    animation-delay: 0.5s;
}

.hero-title-line:nth-child(2) .text-inner {
    animation-delay: 0.7s;
}

.hero-title-line:nth-child(3) .text-inner {
    animation-delay: 0.9s;
}

@keyframes revealText {
    to {
        transform: translateY(0);
    }
}

.hero-subtitle {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.75);
    letter-spacing: 0.08em;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 1.2s;
    margin-bottom: 0.4rem;
}

.hero-tagline {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.75);
    letter-spacing: 0.02em;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 1.4s;
    margin-left: -0.4em;
}

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

.hero-scroll {
    position: absolute;
    bottom: var(--spacing-xl);
    left: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    z-index: 2;
    opacity: 0;
    animation: fadeIn 1s ease forwards;
    animation-delay: 1.5s;
}

@keyframes fadeIn {
    to { opacity: 1; }
}

.hero-scroll span {
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    color: rgba(255, 255, 255, 0.6);
    writing-mode: vertical-rl;
}

.scroll-line {
    width: 1px;
    height: 80px;
    background: rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
}

.scroll-line::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 30px;
    background: rgba(255, 255, 255, 0.8);
    animation: scrollDown 2s ease-in-out infinite;
}

@keyframes scrollDown {
    0% { transform: translateY(-100%); }
    100% { transform: translateY(350%); }
}

/* ============================================
   Section Headers
   ============================================ */
.section-header {
    margin-bottom: var(--spacing-2xl);
}

.section-header--center {
    text-align: center;
}

.section-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    position: relative;
    padding-left: var(--spacing-lg);
}

.section-tag::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 2px;
    background: var(--color-primary);
}

.section-tag--light {
    color: var(--color-accent-light);
}

.section-tag--light::before {
    background: var(--color-accent-light);
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.3;
}

/* ============================================
   Reveal Animations
   ============================================ */
.reveal {
    opacity: 0;
    transform: translateY(60px);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.reveal-card {
    opacity: 0;
    transform: translateY(80px) scale(0.95);
    transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1), transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    transition-delay: var(--delay, 0s);
}

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

.reveal-process {
    opacity: 0;
    transform: translateX(-50px);
    transition: opacity 0.6s ease, transform 0.6s ease;
    transition-delay: var(--delay, 0s);
}

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

.reveal-news {
    opacity: 0;
    transform: translateX(-30px);
    transition: opacity 0.5s ease, transform 0.5s ease;
    transition-delay: var(--delay, 0s);
}

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

/* ============================================
   About Section
   ============================================ */
.about {
    background: var(--color-bg-alt);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: var(--spacing-2xl);
    align-items: start;
}

.about-headline {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 600;
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
    color: var(--color-primary);
}

.highlight {
    color: var(--color-accent);
    position: relative;
}

.highlight::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 8px;
    background: rgba(59, 130, 246, 0.2);
    z-index: -1;
}

.about-text {
    font-size: 1rem;
    line-height: 2;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
}

.text-accent {
    color: var(--color-accent);
    font-weight: 500;
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    padding: var(--spacing-xl);
    background: var(--color-primary);
    border-radius: var(--radius-lg);
    position: relative;
    overflow: hidden;
}

.feature-item {
    text-align: center;
    color: var(--color-text-inverse);
    position: relative;
    z-index: 1;
}

.feature-keyword {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
}

.feature-desc {
    display: block;
    font-size: 0.85rem;
    opacity: 0.7;
    letter-spacing: 0.02em;
}

.about-stats {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    background: var(--color-primary);
    border-radius: var(--radius-lg);
    position: relative;
    overflow: hidden;
}

.about-stats::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.3) 0%, transparent 70%);
    animation: statGlow 4s ease-in-out infinite;
}

@keyframes statGlow {
    0%, 100% { opacity: 0.5; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.2); }
}

.stat-item {
    text-align: center;
    color: var(--color-text-inverse);
    position: relative;
    z-index: 1;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1;
    display: inline;
}

.stat-plus,
.stat-percent {
    font-size: 1.5rem;
    font-weight: 600;
    opacity: 0.8;
}

.stat-label {
    display: block;
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    opacity: 0.7;
}

/* About Links Bar */
.about-links-bar {
    background: var(--color-bg-alt);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-lg) 0;
}

.about-links-grid {
    display: flex;
    justify-content: center;
    gap: var(--spacing-3xl);
}

.about-links-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    text-decoration: none;
    color: var(--color-text-light);
    transition: all var(--transition-base);
}

.about-links-item svg {
    opacity: 0.6;
    transition: all var(--transition-base);
}

.about-links-item span {
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.1em;
}

.about-links-item:hover {
    color: var(--color-primary);
}

.about-links-item:hover svg {
    opacity: 1;
    transform: translateY(-2px);
}

/* ============================================
   Service Section
   ============================================ */
.service-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.service-card {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.service-card-inner {
    padding: var(--spacing-xl);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    position: relative;
    z-index: 1;
    height: 100%;
    transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.service-card:hover .service-card-inner {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-primary);
}

.service-hover-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    opacity: 0;
    transition: opacity var(--transition-base);
    z-index: 0;
}

.service-card:hover .service-hover-bg {
    opacity: 0.03;
}

.service-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    transition: transform var(--transition-base);
}

.service-card:hover .service-icon {
    transform: scale(1.1) rotate(5deg);
}

.service-icon svg {
    width: 28px;
    height: 28px;
    color: var(--color-text-inverse);
}

.service-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

.service-desc {
    font-size: 0.95rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.service-features {
    padding-left: var(--spacing-sm);
}

.service-features li {
    position: relative;
    padding-left: var(--spacing-md);
    font-size: 0.9rem;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
}

.service-features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.6em;
    width: 6px;
    height: 6px;
    background: var(--color-primary);
    border-radius: 50%;
    transition: transform var(--transition-base);
}

.service-card:hover .service-features li::before {
    transform: scale(1.3);
}

/* ============================================
   Tech Stack - Horizontal Scroll
   ============================================ */
.tech-stack {
    background: var(--color-bg-alt);
    padding: var(--spacing-2xl) 0;
    overflow: hidden;
}

.tech-stack .section-subtitle {
    color: var(--color-text-muted);
    margin-top: var(--spacing-sm);
}

.tech-scroll-wrapper {
    position: relative;
    width: 100%;
    margin-top: var(--spacing-xl);
    overflow: hidden;
    -webkit-mask-image: linear-gradient(90deg, transparent, #000 5%, #000 95%, transparent);
    mask-image: linear-gradient(90deg, transparent, #000 5%, #000 95%, transparent);
}

.tech-scroll-container {
    overflow-x: auto;
    overflow-y: hidden;
    scrollbar-width: none;
    -ms-overflow-style: none;
    padding: var(--spacing-md) 0;
    cursor: grab;
}

.tech-scroll-container::-webkit-scrollbar {
    display: none;
}

.tech-scroll-container:active {
    cursor: grabbing;
}

.tech-scroll {
    display: flex;
    gap: var(--spacing-md);
    padding: 0 var(--spacing-xl);
    width: max-content;
    animation: techScroll 80s linear infinite;
}

.tech-scroll:hover {
    animation-play-state: paused;
}

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

.tech-scroll .tech-card {
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100px;
    padding: var(--spacing-md);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    cursor: default;
}

.tech-scroll .tech-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary);
}

.tech-logo {
    width: 48px;
    height: 48px;
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}

.tech-logo svg,
.tech-logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.tech-logo--initial {
    width: 48px;
    height: 48px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    font-weight: 700;
    color: white;
}

.tech-logo--initial::before {
    content: attr(data-initial);
}

.tech-scroll .tech-name {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--color-text);
    text-align: center;
    white-space: nowrap;
}


/* ============================================
   Process Section
   ============================================ */
.process {
    background: linear-gradient(135deg, var(--color-primary) 0%, #1a1a2e 100%);
    color: var(--color-text-inverse);
    overflow: hidden;
    position: relative;
}

.process::before,
.process::after {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    filter: blur(80px);
    pointer-events: none;
}

.process::before {
    top: -100px;
    left: 10%;
    background: rgba(0, 212, 255, 0.2);
    animation: processPulse 8s ease-in-out infinite;
}

.process::after {
    bottom: -100px;
    right: 10%;
    background: rgba(138, 43, 226, 0.15);
    animation: processPulse 8s ease-in-out infinite 4s;
}

@keyframes processPulse {
    0%, 100% {
        opacity: 0.4;
        transform: scale(1);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.2);
    }
}

.process .container {
    position: relative;
    z-index: 1;
}

.process .section-tag {
    color: var(--color-accent-light);
}

.process .section-tag::before {
    background: var(--color-accent-light);
}

.process .section-title {
    color: var(--color-text-inverse);
}

.process-timeline {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
    position: relative;
}

.process-line {
    display: none;
}

.process-line-fill {
    display: none;
}

.process-item {
    position: relative;
    padding: var(--spacing-lg);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: background var(--transition-base), border-color var(--transition-base), transform var(--transition-base);
}

.process-item:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--color-accent);
    transform: translateY(-5px);
}

.process-dot {
    display: none;
}

.process-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-accent);
    opacity: 0.3;
    line-height: 1;
    margin-bottom: var(--spacing-sm);
    transition: opacity var(--transition-base);
}

.process-item:hover .process-number {
    opacity: 0.6;
}

.process-content h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.process-content p {
    font-size: 0.9rem;
    opacity: 0.8;
    line-height: 1.7;
}

/* ============================================
   Portfolio Section
   ============================================ */
.portfolio {
    background: var(--color-bg-alt);
}

.portfolio-filter {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
}

/* Portfolio Slider */
.portfolio-slider-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-left: calc(-50vw + 50%);
    margin-right: calc(-50vw + 50%);
    padding-left: 20px;
    padding-right: 20px;
    width: 100vw;
}

.portfolio-slider {
    display: flex;
    gap: var(--spacing-md);
    overflow-x: auto;
    overflow-y: hidden;
    scroll-behavior: smooth;
    scrollbar-width: none;
    -ms-overflow-style: none;
    padding: var(--spacing-sm) 0;
}

.portfolio-slider::-webkit-scrollbar {
    display: none;
}

.portfolio-nav {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 1px solid var(--color-border);
    background: var(--color-bg);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
    color: var(--color-text);
    z-index: 2;
}

.portfolio-nav:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-text-inverse);
}

.portfolio-card {
    flex: 0 0 300px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: opacity var(--transition-base), transform var(--transition-base);
}

.portfolio-card-inner {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.portfolio-card:hover .portfolio-card-inner {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.portfolio-body {
    padding: var(--spacing-md);
}

.portfolio-card-inner {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.portfolio-category {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    color: var(--color-accent);
    background: rgba(59, 130, 246, 0.1);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-md);
}

.portfolio-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.portfolio-desc {
    font-size: 0.85rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
    line-height: 1.6;
}

.portfolio-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.portfolio-tags span {
    font-size: 0.75rem;
    color: var(--color-text-light);
    background: var(--color-bg-alt);
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    transition: background var(--transition-base), color var(--transition-base);
}

.portfolio-card:hover .portfolio-tags span {
    background: var(--color-primary);
    color: var(--color-text-inverse);
}

.portfolio-more {
    margin-top: var(--spacing-2xl);
    text-align: center;
}

.portfolio-note {
    font-size: 0.95rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
}

/* ============================================
   News Section
   ============================================ */
.news-list {
    border-top: 1px solid var(--color-border);
}

.news-list--hidden {
    display: none;
    border-top: none;
}

.news-list--hidden.visible {
    display: block;
}

a.news-item {
    text-decoration: none;
    color: inherit;
}

.news-item {
    display: grid;
    grid-template-columns: 100px 100px 1fr auto;
    gap: var(--spacing-md);
    align-items: center;
    padding: var(--spacing-md) var(--spacing-sm);
    border-bottom: 1px solid var(--color-border);
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
}

.news-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 0;
    background: var(--color-primary);
    transition: width var(--transition-base);
}

.news-item:hover {
    background: var(--color-bg-alt);
    padding-left: var(--spacing-md);
}

.news-item:hover::before {
    width: 4px;
}

.news-date {
    font-size: 0.85rem;
    color: var(--color-text-light);
    font-variant-numeric: tabular-nums;
}

.news-category {
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--color-accent);
    background: rgba(59, 130, 246, 0.1);
    padding: 4px 12px;
    border-radius: var(--radius-sm);
    text-align: center;
}

.news-title {
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-text);
    transition: color var(--transition-base);
}

.news-item:hover .news-title {
    color: var(--color-primary);
}

.news-arrow {
    opacity: 0;
    transform: translateX(-10px);
    transition: all var(--transition-base);
    color: var(--color-primary);
}

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

.news-more {
    text-align: center;
    margin-top: var(--spacing-lg);
}

/* ============================================
   Recruit Section
   ============================================ */
.recruit {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: var(--color-text-inverse);
    position: relative;
    overflow: hidden;
}

.recruit::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -25%;
    width: 80%;
    height: 200%;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.15) 0%, transparent 70%);
    animation: recruitGlow 8s ease-in-out infinite;
}

@keyframes recruitGlow {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

.recruit-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.recruit .section-tag {
    color: var(--color-accent-light);
}

.recruit .section-tag::before {
    background: var(--color-accent-light);
}

.recruit-headline {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    line-height: 1.4;
    margin: var(--spacing-md) 0 var(--spacing-lg);
}

.recruit-desc {
    font-size: 1rem;
    line-height: 2;
    opacity: 0.9;
    margin-bottom: var(--spacing-xl);
}

.recruit-image {
    position: relative;
}

.recruit-image-wrapper {
    position: relative;
}

.recruit-img {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
    border-radius: var(--radius-lg);
    transition: transform var(--transition-base);
}

.recruit-image:hover .recruit-img {
    transform: translate(-5px, -5px);
}

.recruit-image-placeholder {
    aspect-ratio: 4/3;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: transform var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
}

.recruit-icons {
    display: flex;
    gap: var(--spacing-lg);
    opacity: 0.6;
}

.recruit-icon {
    width: 48px;
    height: 48px;
    color: var(--color-text-inverse);
}

.recruit-image:hover .recruit-image-placeholder {
    transform: translate(-5px, -5px);
}

.recruit-image-decoration {
    position: absolute;
    top: 20px;
    left: 20px;
    right: -20px;
    bottom: -20px;
    border: 2px solid var(--color-accent);
    border-radius: var(--radius-lg);
    z-index: -1;
    transition: transform var(--transition-base);
}

.recruit-image:hover .recruit-image-decoration {
    transform: translate(5px, 5px);
}

/* ============================================
   Company Section
   ============================================ */
.company-table {
    max-width: 800px;
}

.company-info {
    border-top: 2px solid var(--color-primary);
}

.company-row {
    display: grid;
    grid-template-columns: 160px 1fr;
    gap: var(--spacing-lg);
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--color-border);
    transition: background var(--transition-base);
}

.company-row:hover {
    background: var(--color-bg-alt);
    padding-left: var(--spacing-sm);
    margin-left: calc(-1 * var(--spacing-sm));
}

.company-row dt {
    font-weight: 600;
    color: var(--color-primary);
}

.company-row dd {
    color: var(--color-text);
}

.company-row dd ul {
    padding-left: var(--spacing-md);
}

.company-row dd li {
    position: relative;
    padding-left: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
}

.company-row dd li::before {
    content: '・';
    position: absolute;
    left: 0;
}

.ceo-social {
    display: inline-flex;
    gap: 0.75rem;
    margin-left: 1rem;
    vertical-align: middle;
}

.ceo-social a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--color-primary);
    color: #ffffff;
    transition: all var(--transition-base);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.ceo-social a:hover {
    background: var(--color-accent);
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(0, 212, 255, 0.3);
}

/* ============================================
   Contact Section
   ============================================ */
.contact {
    background: linear-gradient(160deg, #1a1a3a 0%, var(--color-primary) 50%, #12122a 100%);
    color: var(--color-text-inverse);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: start;
}

.contact-headline {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    line-height: 1.2;
    margin: var(--spacing-md) 0 var(--spacing-lg);
}

.contact-desc {
    font-size: 1rem;
    line-height: 1.8;
    opacity: 0.9;
    margin-bottom: var(--spacing-lg);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.contact-info-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    opacity: 0.8;
    transition: opacity var(--transition-base);
}

.contact-info-item:hover {
    opacity: 1;
}

.contact-form {
    background: var(--color-bg);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
}

.required {
    color: #ef4444;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    font-size: 1rem;
    font-family: inherit;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(26, 45, 74, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 14px 28px;
    font-size: 0.95rem;
    font-weight: 600;
    font-family: inherit;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn--primary {
    background: var(--color-primary);
    color: var(--color-text-inverse);
}

.btn--primary:hover {
    background: var(--color-primary-light);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(26, 45, 74, 0.3);
}

.btn--outline {
    background: transparent;
    color: var(--color-text-inverse);
    border: 1px solid rgba(255, 255, 255, 0.4);
}

.btn--outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.8);
    transform: translateY(-2px);
}

.btn--outline-dark {
    background: transparent;
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
}

.btn--outline-dark:hover {
    background: var(--color-primary);
    color: var(--color-text-inverse);
}

.btn--text {
    background: transparent;
    color: var(--color-primary);
    padding: var(--spacing-sm) var(--spacing-md);
}

.btn--text:hover {
    background: rgba(26, 45, 74, 0.05);
}

.btn--text::before {
    display: none;
}

.btn--full {
    width: 100%;
}

.btn svg {
    transition: transform var(--transition-base);
}

.btn:hover svg {
    transform: translateX(4px);
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--color-primary-dark);
    color: var(--color-text-inverse);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-main {
    display: grid;
    grid-template-columns: 1fr 2fr 1fr;
    gap: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand .logo-text {
    color: var(--color-text-inverse);
}

.footer-tagline {
    font-size: 0.85rem;
    opacity: 0.6;
    margin-top: var(--spacing-sm);
}

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

.footer-nav a {
    font-size: 0.85rem;
    opacity: 0.8;
    transition: opacity var(--transition-fast), color var(--transition-fast);
}

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

.footer-contact {
    font-size: 0.85rem;
    opacity: 0.8;
    line-height: 1.8;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-lg);
}

.copyright {
    font-size: 0.8rem;
    opacity: 0.6;
}

.footer-social {
    display: flex;
    gap: var(--spacing-md);
}

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    opacity: 0.6;
    transition: all var(--transition-base);
}

.social-link:hover {
    opacity: 1;
    background: var(--color-accent);
    transform: translateY(-3px);
}

/* ============================================
   Magnetic Button Effect
   ============================================ */
.magnetic {
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

    .process-line {
        display: none;
    }

    .process-dot {
        display: none;
    }

    .about-content {
        grid-template-columns: 1fr;
    }

    .about-stats {
        flex-direction: row;
        justify-content: center;
    }

    .about-features {
        flex-direction: row;
        justify-content: center;
        gap: var(--spacing-xl);
    }

    .hero-content {
        max-width: 80%;
    }

    .portfolio-card {
        flex: 0 0 280px;
    }

    .portfolio-slider-wrapper {
        margin-left: 0;
        margin-right: 0;
        padding-left: var(--spacing-md);
        padding-right: var(--spacing-md);
    }
}

@media (max-width: 768px) {
    .nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: var(--color-primary);
        padding: var(--spacing-3xl) var(--spacing-lg);
        transition: right var(--transition-base);
        box-shadow: var(--shadow-xl);
    }

    .nav.active {
        right: 0;
    }

    .nav-list {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-lg);
    }

    .nav-link {
        color: var(--color-text-inverse);
        font-size: 1rem;
    }

    .hamburger {
        display: flex;
        z-index: 1001;
    }

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

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

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

    .hero-content {
        max-width: 100%;
        padding-left: var(--spacing-lg);
    }

    .hero-title {
        font-size: clamp(2.5rem, 10vw, 4rem);
    }

    .service-grid,
    .process-timeline {
        grid-template-columns: 1fr;
    }

    .about-links-grid {
        gap: var(--spacing-xl);
    }

    .portfolio-card {
        flex: 0 0 260px;
    }

    .portfolio-nav {
        display: none;
    }

    .portfolio-slider-wrapper {
        margin-left: calc(-1 * var(--spacing-md));
        margin-right: calc(-1 * var(--spacing-md));
        padding-left: var(--spacing-md);
        padding-right: var(--spacing-md);
    }

    .recruit-content,
    .contact-wrapper {
        grid-template-columns: 1fr;
    }

    .news-item {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }

    .news-category {
        justify-self: start;
    }

    .news-arrow {
        display: none;
    }

    .company-row {
        grid-template-columns: 1fr;
        gap: var(--spacing-xs);
    }

    .footer-main {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-nav ul {
        justify-content: center;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .footer-social {
        justify-content: center;
    }

    .section {
        padding: var(--spacing-2xl) 0;
    }

    .hero-scroll {
        display: none;
    }

    .portfolio-filter {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .about-stats {
        flex-direction: column;
    }

    .about-features {
        flex-direction: column;
    }

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

    .contact-form {
        padding: var(--spacing-lg);
    }
}

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

    .reveal,
    .reveal-card,
    .reveal-process,
    .reveal-news {
        opacity: 1;
        transform: none;
    }

    .text-inner {
        transform: none;
    }
}