/* ============================================
   NAKAYAMA LABORATORY - SWISS MINIMAL
   ============================================ */

/* === CSS Variables === */
:root {
    /* Monochrome */
    --black: #000000;
    --white: #ffffff;
    --gray-100: #f8f8f8;
    --gray-200: #e5e5e5;
    --gray-300: #d4d4d4;
    --gray-400: #a3a3a3;
    --gray-500: #737373;
    --gray-600: #525252;
    --gray-700: #404040;
    --gray-800: #262626;
    --gray-900: #171717;
    
    /* Accent - Teal (差し色のみ、背景には使用しない) */
    --accent: #2dd4bf;
    
    /* Typography - Helvetica Stack */
    --font-primary: 'Helvetica Neue', Helvetica, Arial, 'Noto Sans JP', sans-serif;
    
    /* Spacing */
    --section-padding: 140px;
    --container-width: 1200px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    background: var(--white);
    color: var(--black);
    line-height: 1.7;
    overflow-x: hidden;
}

/* === Geometric Animation Background === */
/* Hidden - only hero section has geometric animation */
.geo-background {
    display: none;
}

#geo-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* === Minimal Status Indicator === */
.cyber-status {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 25px;
    font-size: 0.75rem;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.6);
}

.status-dot {
    width: 6px;
    height: 6px;
    background: #ffffff;
    border-radius: 50%;
    animation: statusPulse 2s ease-in-out infinite;
}

@keyframes statusPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

.status-text {
    opacity: 0.6;
}

/* === Clean Title Effect === */
.glitch {
    position: relative;
}

.glitch::before,
.glitch::after {
    display: none;
}

/* Elegant text animation */
.title-line {
    animation: titleFade 4s ease-in-out infinite;
}

.title-line.accent {
    animation: titleFadeAccent 4s ease-in-out infinite;
    animation-delay: 0.5s;
}

@keyframes titleFade {
    0%, 100% { 
        opacity: 1;
        text-shadow: 0 0 60px rgba(255, 255, 255, 0.3);
    }
    50% { 
        opacity: 0.9;
        text-shadow: 0 0 100px rgba(255, 255, 255, 0.5);
    }
}

@keyframes titleFadeAccent {
    0%, 100% { 
        opacity: 1;
        text-shadow: 0 0 60px rgba(255, 255, 255, 0.4);
    }
    50% { 
        opacity: 0.85;
        text-shadow: 0 0 120px rgba(255, 255, 255, 0.6);
    }
}

/* Cursor blink */
.cursor-blink {
    animation: cursorBlink 1s step-end infinite;
    color: var(--accent);
}

@keyframes cursorBlink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}


#particle-canvas {
    display: none;
}

/* === Typography === */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    font-weight: 700;
    letter-spacing: -0.02em;
}

a {
    color: var(--black);
    text-decoration: none;
    transition: var(--transition-fast);
}

/* === Text Shuffle Effect === */
.shuffle-text {
    cursor: default;
}

/* === Container === */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 40px;
}

/* === Navigation === */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 25px 0;
    transition: var(--transition-normal);
    background: transparent;
}

/* Navbar on dark hero */
.navbar .nav-logo .logo-text,
.navbar .nav-link {
    color: #ffffff;
}

.navbar .nav-logo .logo-sub {
    color: rgba(255, 255, 255, 0.6);
}

.navbar .nav-logo:hover .logo-text {
    color: rgba(255, 255, 255, 0.8);
}

.navbar .nav-link:hover,
.navbar .nav-link.active {
    color: #ffffff;
}

.navbar .nav-link::after {
    background: #ffffff;
}

.navbar .hamburger,
.navbar .hamburger::before,
.navbar .hamburger::after {
    background: #ffffff;
}

.navbar.scrolled {
    background: var(--white);
    padding: 15px 0;
    border-bottom: 1px solid var(--gray-200);
}

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

.navbar.scrolled .nav-logo .logo-sub {
    color: var(--gray-500);
}

.navbar.scrolled .nav-logo:hover .logo-text {
    color: var(--accent);
}

.navbar.scrolled .nav-link {
    color: var(--gray-600);
}

.navbar.scrolled .nav-link:hover,
.navbar.scrolled .nav-link.active {
    color: var(--black);
}

.navbar.scrolled .hamburger,
.navbar.scrolled .hamburger::before,
.navbar.scrolled .hamburger::after {
    background: var(--black);
}

.nav-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    flex-direction: column;
    text-decoration: none;
}

.nav-logo .logo-text {
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--black);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.nav-logo .logo-sub {
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    font-size: 0.6rem;
    color: var(--gray-500);
    letter-spacing: 0.1em;
    font-weight: 400;
    text-transform: uppercase;
}

.nav-logo:hover .logo-text {
    color: var(--accent);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 35px;
}

.nav-link {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--gray-600);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    position: relative;
    padding: 5px 0;
}

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

.nav-link:hover,
.nav-link.active {
    color: var(--black);
}

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

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--black);
    position: relative;
    transition: var(--transition-fast);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background: var(--black);
    transition: var(--transition-fast);
}

.hamburger::before { top: -7px; }
.hamburger::after { bottom: -7px; }

/* === Portfolio Hero Section === */
.portfolio-hero {
    min-height: 100vh;
    background: #0a0a0a;
    position: relative;
    padding: 100px 0 60px;
}

/* Portfolio Header */
.portfolio-header {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 40px 60px;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    flex-wrap: wrap;
    gap: 30px;
}

.portfolio-intro {
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.2s forwards;
}

.portfolio-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    color: #ffffff;
    letter-spacing: 0.02em;
    line-height: 1.1;
    margin-bottom: 8px;
}

.portfolio-subtitle {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.4);
    letter-spacing: 0.3em;
    text-transform: uppercase;
    font-weight: 400;
}

.portfolio-tagline {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.5);
    max-width: 300px;
    text-align: right;
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.4s forwards;
}

/* Portfolio Grid - Masonry Style */
.portfolio-grid {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-auto-rows: 200px;
    gap: 15px;
}

/* Portfolio Items */
.portfolio-item {
    position: relative;
    overflow: hidden;
    cursor: pointer;
    opacity: 0;
    animation: portfolioFadeIn 0.6s ease forwards;
}

.portfolio-item:nth-child(1) { animation-delay: 0.1s; }
.portfolio-item:nth-child(2) { animation-delay: 0.15s; }
.portfolio-item:nth-child(3) { animation-delay: 0.2s; }
.portfolio-item:nth-child(4) { animation-delay: 0.25s; }
.portfolio-item:nth-child(5) { animation-delay: 0.3s; }
.portfolio-item:nth-child(6) { animation-delay: 0.35s; }
.portfolio-item:nth-child(7) { animation-delay: 0.4s; }
.portfolio-item:nth-child(8) { animation-delay: 0.45s; }
.portfolio-item:nth-child(9) { animation-delay: 0.5s; }
.portfolio-item:nth-child(10) { animation-delay: 0.55s; }
.portfolio-item:nth-child(11) { animation-delay: 0.6s; }
.portfolio-item:nth-child(12) { animation-delay: 0.65s; }

@keyframes portfolioFadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Featured item - Large */
.portfolio-item.featured {
    grid-column: span 2;
    grid-row: span 2;
}

/* Medium item */
.portfolio-item.medium {
    grid-row: span 2;
}

/* Image container */
.portfolio-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.portfolio-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.8s cubic-bezier(0.23, 1, 0.32, 1);
    filter: brightness(0.9);
}

.portfolio-item:hover .portfolio-image img {
    transform: scale(1.08);
    filter: brightness(1);
}

/* Overlay */
.portfolio-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 30px 25px;
    background: linear-gradient(to top, rgba(0,0,0,0.85) 0%, rgba(0,0,0,0) 100%);
    transform: translateY(20px);
    opacity: 0;
    transition: all 0.5s cubic-bezier(0.23, 1, 0.32, 1);
}

.portfolio-item:hover .portfolio-overlay {
    transform: translateY(0);
    opacity: 1;
}

.portfolio-category {
    display: inline-block;
    font-size: 0.65rem;
    color: rgba(255, 255, 255, 0.6);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 8px;
}

.portfolio-item-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 5px;
    letter-spacing: 0.01em;
}

.portfolio-item.featured .portfolio-item-title {
    font-size: 1.5rem;
}

.portfolio-item-desc {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.6);
}

/* Border effect on hover */
.portfolio-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border: 2px solid transparent;
    z-index: 10;
    transition: border-color 0.4s ease;
    pointer-events: none;
}

.portfolio-item:hover::before {
    border-color: rgba(255, 255, 255, 0.3);
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: rgba(255, 255, 255, 0.4);
    font-size: 0.6rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    z-index: 10;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0.4), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}

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

/* Responsive */
@media (max-width: 1200px) {
    .portfolio-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .portfolio-item.featured {
        grid-column: span 2;
    }
}

@media (max-width: 900px) {
    .portfolio-grid {
        grid-template-columns: repeat(2, 1fr);
        grid-auto-rows: 180px;
    }
    
    .portfolio-item.featured {
        grid-column: span 2;
        grid-row: span 2;
    }
    
    .portfolio-item.medium {
        grid-row: span 1;
    }
    
    .portfolio-header {
        flex-direction: column;
        align-items: flex-start;
        padding: 0 20px 40px;
    }
    
    .portfolio-tagline {
        text-align: left;
    }
}

@media (max-width: 600px) {
    .portfolio-hero {
        padding: 80px 0 40px;
    }
    
    .portfolio-grid {
        grid-template-columns: 1fr;
        grid-auto-rows: 220px;
        gap: 10px;
    }
    
    .portfolio-item.featured,
    .portfolio-item.medium {
        grid-column: span 1;
        grid-row: span 1;
    }
    
    .portfolio-title {
        font-size: 2rem;
    }
    
    .portfolio-overlay {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Old hero styles (keep for compatibility) */
.hero {
    display: none;
}

.hero-new {
    display: none;
}

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 14px 28px;
    font-family: var(--font-primary);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border: none;
    cursor: pointer;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--black);
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.btn-primary:hover {
    background: var(--gray-800);
}

.btn-secondary {
    background: transparent;
    color: var(--black);
    border: 1px solid var(--black);
    position: relative;
    overflow: hidden;
}

.btn-secondary:hover {
    background: var(--black);
    color: var(--white);
}

.btn-arrow {
    width: 14px;
    height: 14px;
    transition: var(--transition-fast);
}

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

/* === Hero Visual - GIS Style === */
.hero-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.5s forwards;
}

.city-visualization {
    position: relative;
    width: 100%;
    max-width: 480px;
    aspect-ratio: 1;
}

/* Geometric Visual Container */
.geo-visual-container {
    width: 100%;
    aspect-ratio: 1;
    max-width: 450px;
    position: relative;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

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

/* Flow animations */
.flow-major {
    stroke-dasharray: 600;
    stroke-dashoffset: 600;
    animation: flowMajor 6s ease-in-out infinite;
}

.flow-major:nth-child(2) { animation-delay: 3s; }

@keyframes flowMajor {
    0% { stroke-dashoffset: 600; opacity: 0.3; }
    50% { stroke-dashoffset: 0; opacity: 0.7; }
    100% { stroke-dashoffset: -600; opacity: 0.3; }
}

.flow-secondary {
    stroke-dasharray: 400;
    stroke-dashoffset: 400;
    animation: flowSecondary 5s ease-in-out infinite;
}

.flow-secondary:nth-child(3) { animation-delay: 1s; }
.flow-secondary:nth-child(4) { animation-delay: 2s; }
.flow-secondary:nth-child(5) { animation-delay: 3s; }
.flow-secondary:nth-child(6) { animation-delay: 4s; }

@keyframes flowSecondary {
    0% { stroke-dashoffset: 400; opacity: 0.2; }
    50% { stroke-dashoffset: 0; opacity: 0.6; }
    100% { stroke-dashoffset: -400; opacity: 0.2; }
}

.flow-orbital {
    stroke-dasharray: 500;
    stroke-dashoffset: 500;
    animation: flowOrbital 10s linear infinite;
}

.flow-orbital:nth-child(8) { animation-delay: 5s; }

@keyframes flowOrbital {
    0% { stroke-dashoffset: 500; }
    100% { stroke-dashoffset: -500; }
}

.flow-micro {
    stroke-dasharray: 200;
    stroke-dashoffset: 200;
    animation: flowMicro 4s ease-in-out infinite;
}

@keyframes flowMicro {
    0% { stroke-dashoffset: 200; opacity: 0.1; }
    50% { stroke-dashoffset: 0; opacity: 0.4; }
    100% { stroke-dashoffset: -200; opacity: 0.1; }
}

.flow-diagonal {
    stroke-dasharray: 600;
    stroke-dashoffset: 600;
    animation: flowDiagonal 8s linear infinite;
}

@keyframes flowDiagonal {
    0% { stroke-dashoffset: 600; }
    100% { stroke-dashoffset: -600; }
}

/* Particle effects */
.particles circle {
    filter: drop-shadow(0 0 3px var(--accent));
}

.particles rect {
    filter: drop-shadow(0 0 2px rgba(0, 0, 0, 0.3));
}

/* Node effects */
.node-central {
    filter: drop-shadow(0 0 6px var(--accent));
}

.node-secondary circle {
    transition: var(--transition-fast);
}

.city-grid:hover .node-secondary circle:first-child {
    stroke-width: 2;
}

/* Heatmap hover */
.heatmap ellipse,
.heatmap circle {
    transition: var(--transition-normal);
}

.city-grid:hover .heatmap ellipse,
.city-grid:hover .heatmap circle {
    opacity: 0.9;
}

/* UI layer */
.ui-layer rect {
    transition: var(--transition-fast);
}

.layer-info:hover rect {
    opacity: 0.95;
}

/* Buildings hover */
.buildings rect {
    transition: var(--transition-fast);
}

.city-grid:hover .buildings rect {
    opacity: 0.1;
}

/* Responsive */
@media (max-width: 768px) {
    .city-visualization {
        max-width: 360px;
    }
    
    .ui-layer text {
        font-size: 5px;
    }
    
    .layer-info {
        display: none;
    }
}

/* === Scroll Indicator === */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    z-index: 10;
}

.scroll-indicator span {
    font-size: 0.65rem;
    color: rgba(255, 255, 255, 0.5);
    letter-spacing: 0.3em;
    text-transform: uppercase;
    font-weight: 400;
}

.scroll-line {
    width: 1px;
    height: 50px;
    background: rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
}

.scroll-line::before {
    display: none;
}

.scroll-line::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 15px;
    background: linear-gradient(180deg, #ffffff, transparent);
    animation: scrollMove 2s ease-in-out infinite;
}

@keyframes scrollMove {
    0% { transform: translateY(-100%); opacity: 0; }
    20% { opacity: 1; }
    80% { opacity: 1; }
    100% { transform: translateY(400%); opacity: 0; }
}

/* === Section Base === */
.section {
    padding: var(--section-padding) 0;
    position: relative;
}

.section-header {
    margin-bottom: 70px;
}

.section-number {
    display: block;
    font-size: 0.75rem;
    color: var(--accent);
    letter-spacing: 0.15em;
    margin-bottom: 15px;
    font-weight: 600;
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--black);
}

.section-line {
    width: 40px;
    height: 2px;
    background: var(--accent);
    margin-top: 25px;
}

/* === About Section === */
.about {
    background: var(--white);
    border-top: 1px solid var(--gray-200);
    position: relative;
    z-index: 1;
}

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

.about-heading {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 25px;
    color: var(--black);
}

.about-text {
    color: var(--gray-600);
    margin-bottom: 20px;
    line-height: 1.9;
    font-size: 0.95rem;
}

.about-stats {
    display: flex;
    gap: 50px;
    margin-top: 40px;
    padding-top: 40px;
    border-top: 1px solid var(--gray-200);
}

.about-stats .stat-item {
    text-align: left;
    background: none;
    border: none;
    padding: 0;
    min-width: auto;
    flex-direction: column;
    align-items: flex-start;
}

.about-stats .stat-item::before,
.about-stats .stat-item::after {
    display: none;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--black);
    line-height: 1;
    text-shadow: none;
    animation: none;
}

.about-stats .stat-label {
    font-size: 0.7rem;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-top: 8px;
    text-shadow: none;
}

.about-image {
    position: relative;
}

.image-frame {
    position: relative;
    background: var(--gray-100);
    aspect-ratio: 4/5;
    overflow: hidden;
    border: 1px solid var(--gray-200);
}

.frame-corner {
    position: absolute;
    width: 30px;
    height: 30px;
    border: 2px solid var(--accent);
    z-index: 2;
    transition: var(--transition-normal);
}

.image-frame:hover .frame-corner {
    width: 50px;
    height: 50px;
}

.frame-corner.top-left { top: 15px; left: 15px; border-right: none; border-bottom: none; }
.frame-corner.top-right { top: 15px; right: 15px; border-left: none; border-bottom: none; }
.frame-corner.bottom-left { bottom: 15px; left: 15px; border-right: none; border-top: none; }
.frame-corner.bottom-right { bottom: 15px; right: 15px; border-left: none; border-top: none; }

.image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 15px;
    color: var(--gray-400);
}

.placeholder-icon {
    width: 50px;
    height: 50px;
    color: var(--gray-300);
}

/* === News Section === */
.news {
    background: var(--gray-100);
    position: relative;
    z-index: 1;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

@media (min-width: 1025px) {
    .news-grid {
        grid-template-columns: repeat(5, 1fr);
    }
}

.news-card {
    display: flex;
    flex-direction: column;
    background: var(--white);
    transition: var(--transition-normal);
    position: relative;
    border: 1px solid var(--gray-200);
    overflow: hidden;
}

.news-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: var(--transition-normal);
    z-index: 2;
}

.news-card:hover::before {
    width: 100%;
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    border-color: var(--gray-300);
}

/* Eyecatch Image */
.news-eyecatch {
    width: 100%;
    aspect-ratio: 16/10;
    overflow: hidden;
    position: relative;
}

.news-eyecatch img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-normal);
}

.news-card:hover .news-eyecatch img {
    transform: scale(1.05);
}

.eyecatch-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--gray-200) 0%, var(--gray-300) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-500);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.05em;
}

.news-body {
    padding: 25px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.news-date {
    margin-bottom: 15px;
}

.date-day {
    display: block;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--black);
    line-height: 1;
}

.date-month {
    display: block;
    font-size: 0.65rem;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-top: 5px;
    font-weight: 500;
}

.news-category {
    display: inline-block;
    font-size: 0.6rem;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: 10px;
    font-weight: 600;
}

.news-title {
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: 0;
    margin-bottom: 10px;
    line-height: 1.5;
}

.news-excerpt {
    font-size: 0.8rem;
    color: var(--gray-600);
    margin-bottom: 15px;
    line-height: 1.7;
    flex-grow: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-link {
    font-size: 0.65rem;
    color: var(--black);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
}

.news-link::after {
    content: '→';
    transition: var(--transition-fast);
}

.news-link:hover {
    color: var(--accent);
}

.news-link:hover::after {
    transform: translateX(4px);
}

/* News Archive Link */
.news-archive-section {
    margin-top: 50px;
    text-align: center;
}

.news-archive-link {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-size: 0.9rem;
    color: var(--black);
    letter-spacing: 0.05em;
    padding: 16px 32px;
    border: 1px solid var(--gray-300);
    transition: var(--transition-normal);
    font-weight: 500;
}

.news-archive-link svg {
    width: 18px;
    height: 18px;
    transition: var(--transition-fast);
}

.news-archive-link:hover {
    border-color: var(--accent);
    color: var(--accent);
}

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

/* News Archive Page */
.news-archive-page {
    padding-top: 160px;
}

.news-archive-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

@media (max-width: 1024px) {
    .news-archive-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .news-archive-grid {
        grid-template-columns: 1fr;
    }
}

/* === Members Section === */
.members {
    background: var(--white);
    border-top: 1px solid var(--gray-200);
    position: relative;
    z-index: 1;
}

.member-category {
    margin-bottom: 70px;
}

.category-title {
    font-size: 0.75rem;
    color: var(--accent);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 35px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--gray-200);
    font-weight: 600;
}

.professor-card {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 50px;
    background: var(--gray-100);
    padding: 40px;
    border: 1px solid var(--gray-200);
}

.professor-image,
.member-image {
    position: relative;
}

.professor-image {
    width: 100%;
    aspect-ratio: 1;
}

.professor-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    background: var(--white);
    border: 1px solid var(--gray-200);
}

.member-placeholder {
    aspect-ratio: 1;
    background: var(--white);
    border: 1px solid var(--gray-200);
    transition: var(--transition-normal);
}

.member-card:hover .member-placeholder {
    border-color: var(--accent);
}

.professor-info {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.professor-name {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.professor-title {
    font-size: 0.75rem;
    color: var(--accent);
    margin-bottom: 20px;
    letter-spacing: 0.05em;
    font-weight: 600;
}

.professor-bio {
    color: var(--gray-600);
    line-height: 1.9;
    margin-bottom: 25px;
    font-size: 0.95rem;
}

.professor-links {
    display: flex;
    gap: 12px;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 1px solid var(--gray-300);
    color: var(--gray-600);
    transition: var(--transition-normal);
}

.social-link:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.social-link svg {
    width: 16px;
    height: 16px;
}

.members-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}

.member-card {
    background: var(--gray-100);
    padding: 25px;
    transition: var(--transition-normal);
    position: relative;
    border: 1px solid var(--gray-200);
}

.member-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: var(--transition-normal);
}

.member-card:hover::after {
    width: 100%;
}

.member-card:hover {
    background: var(--white);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
}

.member-info {
    margin-top: 20px;
}

.member-name {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.member-role {
    display: inline-block;
    font-size: 0.6rem;
    color: var(--white);
    background: var(--black);
    padding: 4px 10px;
    margin-bottom: 10px;
    letter-spacing: 0.05em;
    font-weight: 600;
}

.member-research {
    display: block;
    font-size: 0.8rem;
    color: var(--gray-500);
    line-height: 1.5;
}

/* B3 Members List */
.b3-members-list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    padding: 35px;
    background: var(--gray-100);
    border: 1px solid var(--gray-200);
}

.b3-member {
    font-size: 0.85rem;
    color: var(--gray-600);
    padding: 8px 16px;
    border: 1px solid var(--gray-300);
    background: var(--white);
    transition: var(--transition-normal);
    font-weight: 500;
}

.b3-member:hover {
    border-color: var(--accent);
}

/* Alumni Link */
.alumni-section {
    margin-top: 50px;
    padding-top: 50px;
    border-top: 1px solid var(--gray-200);
    text-align: center;
}

.alumni-link {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-size: 0.9rem;
    color: var(--black);
    letter-spacing: 0.05em;
    padding: 16px 32px;
    border: 1px solid var(--gray-300);
    transition: var(--transition-normal);
    font-weight: 500;
}

.alumni-link svg {
    width: 18px;
    height: 18px;
    transition: var(--transition-fast);
}

.alumni-link:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.alumni-link:hover svg {
    transform: translateX(4px);
    color: var(--black);
}

/* === Alumni Page === */
.alumni-page {
    padding-top: 160px;
}

.alumni-intro {
    font-size: 1rem;
    color: var(--gray-600);
    margin-bottom: 60px;
    max-width: 600px;
    line-height: 1.8;
}

.alumni-year {
    margin-bottom: 60px;
}

.year-title {
    font-size: 0.8rem;
    color: var(--accent);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--gray-200);
    font-weight: 600;
}

.alumni-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.alumni-card {
    background: var(--gray-100);
    border: 1px solid var(--gray-200);
    padding: 30px 35px;
    transition: var(--transition-normal);
}

.alumni-card:hover {
    border-color: var(--accent);
}

.alumni-name {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 20px;
    letter-spacing: 0.02em;
}

.alumni-details {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

.alumni-detail-item {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.detail-label {
    font-size: 0.7rem;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 600;
}

.detail-content {
    font-size: 0.9rem;
    color: var(--black);
    line-height: 1.6;
}

@media (max-width: 768px) {
    .alumni-page {
        padding-top: 120px;
    }
    
    .alumni-details {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .alumni-card {
        padding: 25px;
    }
}

/* === Research Section === */
.research {
    background: var(--gray-100);
    position: relative;
    z-index: 1;
}

.research-intro {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 60px;
    color: var(--gray-600);
    font-size: 1rem;
    line-height: 1.9;
}

.research-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.research-card {
    background: var(--white);
    transition: var(--transition-normal);
    position: relative;
    border: 1px solid var(--gray-200);
    overflow: hidden;
}

.research-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    border-color: var(--gray-300);
}

.research-card-eyecatch {
    width: 100%;
    aspect-ratio: 16/9;
    overflow: hidden;
    background: var(--gray-100);
}

.research-card-eyecatch img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-normal);
}

.research-card:hover .research-card-eyecatch img {
    transform: scale(1.05);
}

.research-card-eyecatch .eyecatch-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-400);
    font-size: 0.85rem;
}

.research-card-body {
    padding: 30px 35px 40px;
}

.card-icon {
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
}

.card-icon svg {
    width: 35px;
    height: 35px;
    color: var(--accent);
    stroke-width: 1.5;
}

.card-title {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 15px;
}

.card-description {
    color: var(--gray-600);
    margin-bottom: 25px;
    line-height: 1.8;
    font-size: 0.9rem;
}

.card-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.7rem;
    color: var(--black);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 600;
}

.card-link svg {
    width: 14px;
    height: 14px;
    transition: var(--transition-fast);
}

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

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

/* === Publications Section === */
.publications {
    background: var(--white);
    border-top: 1px solid var(--gray-200);
    position: relative;
    z-index: 1;
}

.publications-filter {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 50px;
}

.filter-btn {
    font-family: var(--font-primary);
    font-size: 0.7rem;
    padding: 10px 20px;
    background: transparent;
    border: 1px solid var(--gray-300);
    color: var(--gray-600);
    cursor: pointer;
    transition: var(--transition-normal);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 500;
}

.filter-btn:hover,
.filter-btn.active {
    border-color: var(--black);
    color: var(--white);
    background: var(--black);
}

.publications-list {
    max-width: 900px;
    margin: 0 auto;
}

.publication-item {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: 35px;
    padding: 35px 0;
    border-bottom: 1px solid var(--gray-200);
    transition: var(--transition-normal);
}

.publication-item:hover {
    padding-left: 15px;
    background: var(--gray-100);
    margin: 0 -15px;
    padding-right: 15px;
}

.pub-year {
    font-size: 1rem;
    color: var(--accent);
    font-weight: 700;
}

.pub-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--black);
}

.pub-authors {
    font-size: 0.85rem;
    color: var(--gray-600);
    margin-bottom: 4px;
}

.pub-venue {
    font-size: 0.8rem;
    color: var(--gray-500);
    font-style: italic;
    margin-bottom: 12px;
}

.pub-links {
    display: flex;
    gap: 12px;
}

.pub-link {
    font-size: 0.65rem;
    color: var(--black);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 5px 12px;
    border: 1px solid var(--gray-400);
    transition: var(--transition-normal);
    font-weight: 600;
}

.pub-link:hover {
    background: var(--black);
    color: var(--white);
    border-color: var(--black);
}

/* === Awards Section === */
.awards {
    background: var(--gray-100);
    position: relative;
    z-index: 1;
}

.awards-list {
    max-width: 900px;
    margin: 0 auto;
}

.award-item {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: 35px;
    padding: 35px 0;
    border-bottom: 1px solid var(--gray-200);
    transition: var(--transition-normal);
}

.award-item:hover {
    padding-left: 15px;
    background: var(--white);
    margin: 0 -15px;
    padding-right: 15px;
}

.award-year {
    font-size: 1rem;
    color: var(--accent);
    font-weight: 700;
}

.award-content {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.award-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--accent);
    flex-shrink: 0;
}

.award-icon svg {
    width: 20px;
    height: 20px;
    color: var(--accent);
}

.award-details {
    flex: 1;
}

.award-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--black);
}

.award-org {
    font-size: 0.85rem;
    color: var(--accent);
    margin-bottom: 4px;
    font-weight: 500;
}

.award-recipient {
    font-size: 0.8rem;
    color: var(--gray-500);
    font-style: italic;
}

.award-work {
    font-size: 0.85rem;
    color: var(--gray-600);
    margin-top: 8px;
    line-height: 1.6;
}

/* Awards Archive Link */
.awards-archive-section {
    margin-top: 50px;
    padding-top: 50px;
    border-top: 1px solid var(--gray-200);
    text-align: center;
}

.awards-archive-link {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-size: 0.9rem;
    color: var(--black);
    letter-spacing: 0.05em;
    padding: 16px 32px;
    border: 1px solid var(--gray-300);
    transition: var(--transition-normal);
    font-weight: 500;
}

.awards-archive-link svg {
    width: 18px;
    height: 18px;
    transition: var(--transition-fast);
}

.awards-archive-link:hover {
    border-color: var(--accent);
    color: var(--accent);
}

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

/* === Awards Archive Page === */
.awards-page {
    padding-top: 160px;
}

.page-intro {
    font-size: 1rem;
    color: var(--gray-600);
    margin-bottom: 60px;
    max-width: 600px;
    line-height: 1.8;
}

.awards-archive-list {
    max-width: 900px;
    margin: 0 auto;
}

.awards-year-group {
    margin-bottom: 60px;
}

.year-heading {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--black);
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--accent);
}

.awards-year-items {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.award-archive-item {
    background: var(--white);
    border: 1px solid var(--gray-200);
    transition: var(--transition-normal);
}

.award-archive-item:hover {
    border-color: var(--accent);
}

.award-archive-content {
    display: flex;
    gap: 25px;
    padding: 30px 35px;
    align-items: flex-start;
}

.award-archive-icon {
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--accent);
    flex-shrink: 0;
}

.award-archive-icon svg {
    width: 22px;
    height: 22px;
    color: var(--accent);
}

.award-archive-details {
    flex: 1;
}

.award-archive-date {
    display: block;
    font-size: 0.7rem;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 8px;
    font-weight: 500;
}

.award-archive-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--black);
}

.award-archive-org {
    font-size: 0.9rem;
    color: var(--accent);
    margin-bottom: 10px;
    font-weight: 500;
}

.award-archive-work {
    font-size: 0.9rem;
    color: var(--gray-600);
    line-height: 1.7;
}

.award-archive-winner {
    font-size: 0.85rem;
    color: var(--gray-500);
    margin-top: 8px;
    font-style: italic;
}

.award-archive-recipient {
    font-size: 0.85rem;
    color: var(--gray-500);
    margin-top: 8px;
    font-style: italic;
}

@media (max-width: 768px) {
    .awards-page {
        padding-top: 120px;
    }
    
    .award-archive-content {
        flex-direction: column;
        gap: 15px;
        padding: 25px;
    }
    
    .award-archive-icon {
        width: 40px;
        height: 40px;
    }
}

/* === Contact Section === */
.contact {
    background: var(--white);
    border-top: 1px solid var(--gray-200);
    position: relative;
    z-index: 1;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 70px;
}

.contact-heading {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.contact-text {
    color: var(--gray-600);
    margin-bottom: 40px;
    line-height: 1.9;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.contact-item {
    display: flex;
    gap: 15px;
}

.contact-item svg {
    width: 18px;
    height: 18px;
    color: var(--accent);
    flex-shrink: 0;
    margin-top: 2px;
}

.contact-item strong {
    display: block;
    font-size: 0.7rem;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 8px;
    font-weight: 600;
}

.contact-item p {
    color: var(--gray-600);
    line-height: 1.7;
    font-size: 0.95rem;
}

.contact-map {
    position: relative;
    width: 100%;
    min-height: 350px;
    border: 1px solid var(--gray-200);
    overflow: hidden;
}

.contact-map iframe {
    width: 100%;
    height: 100%;
    min-height: 350px;
    display: block;
    filter: grayscale(100%);
    transition: filter 0.3s ease;
}

.contact-map:hover iframe {
    filter: grayscale(0%);
}

/* === Footer === */
.footer {
    background: var(--black);
    padding: 80px 0 40px;
    position: relative;
    z-index: 10;
}

.footer-main {
    display: grid;
    grid-template-columns: 2fr 1fr 1.2fr 1fr;
    gap: 50px;
    padding-bottom: 50px;
    border-bottom: 1px solid var(--gray-800);
    margin-bottom: 30px;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.footer-logo .logo-text {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--white);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    display: block;
}

.footer-logo .logo-sub {
    font-size: 0.6rem;
    color: var(--gray-500);
    letter-spacing: 0.15em;
    display: block;
    margin-top: 3px;
}

.footer-tagline {
    font-size: 0.85rem;
    color: var(--gray-400);
    line-height: 1.6;
}

.footer-affiliation {
    margin-top: 10px;
}

.footer-affiliation p {
    font-size: 0.75rem;
    color: var(--gray-500);
    line-height: 1.8;
}

.footer-heading {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--white);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: 20px;
}

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

.footer-links a {
    font-size: 0.8rem;
    color: var(--gray-500);
    transition: var(--transition-fast);
}

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

.footer-contact .footer-address {
    margin-bottom: 15px;
}

.footer-address p {
    font-size: 0.8rem;
    color: var(--gray-500);
    line-height: 1.8;
}

.footer-email {
    font-size: 0.8rem;
    color: var(--gray-400);
}

.footer-connect {
    display: flex;
    flex-direction: column;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.footer .social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--gray-700);
    border-radius: 50%;
    color: var(--gray-500);
    transition: var(--transition-fast);
}

.footer .social-link svg {
    width: 18px;
    height: 18px;
}

.footer .social-link:hover {
    border-color: var(--white);
    color: var(--white);
    background: rgba(255, 255, 255, 0.05);
}

.footer-bottom {
    text-align: center;
}

.footer-bottom p {
    font-size: 0.75rem;
    color: var(--gray-600);
    letter-spacing: 0.05em;
}

@media (max-width: 992px) {
    .footer-main {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }
}

@media (max-width: 600px) {
    .footer-main {
        grid-template-columns: 1fr;
        gap: 35px;
        text-align: center;
    }
    
    .footer-nav .footer-links {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
        gap: 15px 25px;
    }
    
    .footer-social {
        justify-content: center;
    }
}

/* === Animations === */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* === Detail Page Styles === */
.detail-page {
    padding-top: 140px;
    background: var(--white);
}

.detail-header {
    margin-bottom: 50px;
}

.detail-category {
    display: inline-block;
    font-size: 0.7rem;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: 15px;
    padding: 8px 16px;
    border: 1px solid var(--accent);
    font-weight: 600;
}

.detail-title {
    font-size: clamp(1.8rem, 3.5vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--black);
}

.detail-meta {
    font-size: 0.85rem;
    color: var(--gray-500);
}

.detail-content {
    max-width: 700px;
    margin: 0 auto;
}

.detail-content h2 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--black);
    margin: 45px 0 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--gray-200);
}

.detail-content h3 {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--black);
    margin: 30px 0 12px;
}

.detail-content p {
    color: var(--gray-600);
    line-height: 1.9;
    margin-bottom: 18px;
    text-align: justify;
}

.detail-content ul,
.detail-content ol {
    color: var(--gray-600);
    margin-bottom: 20px;
    padding-left: 20px;
}

.detail-content li {
    margin-bottom: 10px;
    line-height: 1.7;
}

.article-author {
    margin-top: 50px;
    padding-top: 25px;
    border-top: 1px solid var(--gray-200);
    font-size: 0.85rem;
    color: var(--gray-500);
    text-align: right;
}

.detail-figure {
    width: 100%;
    margin: 35px 0;
}

.detail-figure img {
    width: 100%;
    height: auto;
    display: block;
    border: 1px solid var(--gray-200);
}

.detail-figure figcaption {
    margin-top: 10px;
    font-size: 0.8rem;
    color: var(--gray-500);
    text-align: center;
    line-height: 1.5;
}

.detail-image-placeholder {
    width: 100%;
    aspect-ratio: 16/9;
    background: var(--gray-100);
    border: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-400);
    margin: 35px 0;
}

.detail-eyecatch {
    width: 100%;
    aspect-ratio: 16/9;
    overflow: hidden;
    margin: 35px 0;
    border: 1px solid var(--gray-200);
}

.detail-eyecatch img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.7rem;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 40px;
    font-weight: 500;
}

.back-link svg {
    width: 14px;
    height: 14px;
    transition: var(--transition-fast);
}

.back-link:hover {
    color: var(--accent);
}

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

.related-section {
    margin-top: 80px;
    padding-top: 60px;
    border-top: 1px solid var(--gray-200);
}

.related-title {
    font-size: 0.75rem;
    color: var(--accent);
    margin-bottom: 35px;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    font-weight: 600;
}

/* === Responsive === */
@media (max-width: 1024px) {
    :root {
        --section-padding: 100px;
    }
    
    .container {
        padding: 0 30px;
    }
    
    .nav-container {
        padding: 0 30px;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 50px;
    }
    
    .hero-description {
        border-left: none;
        padding-left: 0;
        border-top: 2px solid var(--black);
        padding-top: 20px;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-visual {
        order: -1;
    }
    
    .city-visualization {
        max-width: 300px;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 50px;
    }
    
    .professor-card {
        grid-template-columns: 1fr;
    }
    
    .members-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .research-grid {
        grid-template-columns: 1fr;
    }
    
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background: var(--white);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 25px;
        transition: var(--transition-normal);
        z-index: 1000;
    }
    
    /* Mobile menu text color - black on white background */
    .nav-menu .nav-link {
        color: var(--black) !important;
        font-size: 1.2rem;
    }
    
    .nav-menu .nav-link:hover,
    .nav-menu .nav-link.active {
        color: var(--accent) !important;
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-toggle {
        display: block;
        z-index: 1001;
    }
    
    /* Make hamburger black when menu is open */
    .nav-toggle.active .hamburger,
    .nav-toggle.active .hamburger::before,
    .nav-toggle.active .hamburger::after {
        background: var(--black);
    }
    
    .nav-toggle.active .hamburger {
        background: transparent;
    }
    
    .nav-toggle.active .hamburger::before {
        transform: rotate(45deg);
        top: 0;
    }
    
    .nav-toggle.active .hamburger::after {
        transform: rotate(-45deg);
        bottom: 0;
    }
    
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        flex-wrap: wrap;
        gap: 35px;
    }
    
    .members-grid {
        grid-template-columns: 1fr;
    }
    
    .publication-item,
    .award-item {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .title-line {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.6rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .b3-members-list {
        padding: 20px;
    }
    
    .b3-member {
        padding: 6px 12px;
        font-size: 0.8rem;
    }
    
    /* Cyberpunk responsive */
    .data-terminal {
        display: none;
    }
    
    .data-stats-panel {
        flex-wrap: wrap;
        gap: 15px;
    }
    
    .stat-item {
        flex: 1 1 40%;
    }
    
    .hero::before,
    .hero::after {
        display: none;
    }
    
    .cyber-status {
        font-size: 0.6rem;
    }
    
    .glitch::before,
    .glitch::after {
        display: none;
    }
}

@media (max-width: 768px) {
    .data-terminal {
        margin-top: 20px;
    }
    
    .terminal-body {
        font-size: 0.7rem;
        padding: 10px;
    }
    
    .data-stats-panel {
        padding: 12px 15px;
    }
    
    .stat-value {
        font-size: 1rem;
    }
}

/* ============================================
   DARK THEME WITH SIDEBAR
   ============================================ */

/* Dark Theme Base */
.dark-theme {
    background: #0a0a0a;
    color: #ffffff;
}

/* Sidebar */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: 70px;
    height: 100vh;
    background: #111111;
    border-right: 1px solid #222;
    display: flex;
    flex-direction: column;
    z-index: 1000;
    transition: width 0.3s ease;
}

.sidebar:hover {
    width: 220px;
}

.sidebar-header {
    padding: 25px 15px;
    border-bottom: 1px solid #222;
    overflow: hidden;
}

.sidebar-logo {
    display: block;
    white-space: nowrap;
    position: relative;
}

.sidebar-logo .logo-main {
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    font-size: 1.2rem;
    font-weight: 700;
    color: #fff;
    letter-spacing: 0.05em;
    display: inline-block;
}

.sidebar-logo .logo-full {
    position: absolute;
    left: 0;
    top: 0;
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    font-size: 0.85rem;
    font-weight: 700;
    color: #fff;
    letter-spacing: 0.05em;
    white-space: nowrap;
    opacity: 0;
}

/* Glitch layers */
.sidebar-logo .logo-full::before,
.sidebar-logo .logo-full::after {
    content: attr(data-text);
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
}

.sidebar-logo .logo-full::before {
    color: #ff8c00;
    z-index: -1;
}

.sidebar-logo .logo-full::after {
    color: #00ffff;
    z-index: -2;
}

.sidebar:hover .sidebar-logo .logo-main {
    opacity: 0;
}

.sidebar:hover .sidebar-logo .logo-full {
    opacity: 1;
    animation: glitchText 0.4s ease-out forwards;
}

.sidebar:hover .sidebar-logo .logo-full::before {
    opacity: 0.8;
    animation: glitchRed 0.4s ease-out forwards;
}

.sidebar:hover .sidebar-logo .logo-full::after {
    opacity: 0.8;
    animation: glitchCyan 0.4s ease-out forwards;
}

@keyframes glitchText {
    0% {
        transform: translate(0);
        opacity: 0;
    }
    10% {
        transform: translate(-3px, 2px);
        opacity: 1;
    }
    20% {
        transform: translate(3px, -1px);
    }
    30% {
        transform: translate(-2px, 1px);
    }
    40% {
        transform: translate(2px, -2px);
    }
    50% {
        transform: translate(-1px, 2px);
    }
    60% {
        transform: translate(1px, -1px);
    }
    70% {
        transform: translate(0);
    }
    100% {
        transform: translate(0);
        opacity: 1;
    }
}

@keyframes glitchRed {
    0% {
        transform: translate(0);
        opacity: 0;
    }
    10% {
        transform: translate(4px, -1px);
        opacity: 0.8;
    }
    20% {
        transform: translate(-3px, 2px);
    }
    30% {
        transform: translate(2px, 1px);
    }
    40% {
        transform: translate(-4px, -1px);
    }
    50% {
        transform: translate(3px, 0);
    }
    60% {
        transform: translate(-1px, 1px);
    }
    70% {
        transform: translate(0);
        opacity: 0;
    }
    100% {
        transform: translate(0);
        opacity: 0;
    }
}

@keyframes glitchCyan {
    0% {
        transform: translate(0);
        opacity: 0;
    }
    10% {
        transform: translate(-4px, 1px);
        opacity: 0.8;
    }
    20% {
        transform: translate(3px, -2px);
    }
    30% {
        transform: translate(-2px, -1px);
    }
    40% {
        transform: translate(4px, 1px);
    }
    50% {
        transform: translate(-3px, 0);
    }
    60% {
        transform: translate(1px, -1px);
    }
    70% {
        transform: translate(0);
        opacity: 0;
    }
    100% {
        transform: translate(0);
        opacity: 0;
    }
}

.sidebar-nav {
    flex: 1;
    padding: 20px 0;
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px 22px;
    color: rgba(255, 255, 255, 0.5);
    transition: all 0.3s ease;
    white-space: nowrap;
    overflow: hidden;
}

.sidebar-link svg {
    width: 22px;
    height: 22px;
    flex-shrink: 0;
}

.sidebar-link span {
    opacity: 0;
    transition: opacity 0.3s ease;
    font-size: 0.8rem;
    letter-spacing: 0.05em;
}

.sidebar:hover .sidebar-link span {
    opacity: 1;
}

.sidebar-link:hover,
.sidebar-link.active {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.05);
}

.sidebar-link.active {
    border-left: 2px solid #fff;
}

.sidebar-footer {
    padding: 20px 0;
    border-top: 1px solid #222;
}

.sidebar-lab-link {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px 22px;
    color: var(--accent);
    transition: all 0.3s ease;
    white-space: nowrap;
    overflow: hidden;
    font-weight: 600;
}

.sidebar-lab-link svg {
    width: 22px;
    height: 22px;
    flex-shrink: 0;
}

.sidebar-lab-link span {
    opacity: 0;
    transition: opacity 0.3s ease;
    font-size: 0.85rem;
}

.sidebar:hover .sidebar-lab-link span {
    opacity: 1;
}

.sidebar-lab-link:hover {
    background: rgba(45, 212, 191, 0.1);
}

/* Main Content Area */
.main-content {
    margin-left: 70px;
    min-height: 100vh;
    transition: margin-left 0.3s ease;
}

/* Dark Portfolio Grid */
.portfolio-grid-dark {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 3px;
    min-height: 100vh;
}

.project-card {
    position: relative;
    overflow: hidden;
    aspect-ratio: 4/3;
}

.project-card.featured {
    grid-column: span 2;
    grid-row: span 2;
}

.project-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease, filter 0.6s ease;
    filter: brightness(0.7);
}

.project-card:hover .project-image img {
    transform: scale(1.05);
    filter: brightness(0.5);
}

.project-info {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 25px;
    background: linear-gradient(to top, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0) 100%);
}

.project-category {
    display: inline-block;
    font-size: 0.65rem;
    color: rgba(255, 255, 255, 0.5);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 8px;
}

.project-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 5px;
    letter-spacing: 0.01em;
}

.project-card.featured .project-title {
    font-size: 1.5rem;
}

.project-meta {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.6);
}

/* Page Container for sub-pages */
.page-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 80px 50px;
}

/* About Page Dark */
.about-layout {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 60px;
    align-items: start;
}

.about-photo img {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    filter: grayscale(30%);
}

.about-name-dark {
    margin-bottom: 20px;
}

.about-name-dark .name-en {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: #ffffff;
    letter-spacing: -0.02em;
}

.about-name-dark .name-jp {
    display: block;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.4);
    margin-top: 8px;
}

.about-role {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 20px;
}

.about-affiliations {
    margin-bottom: 30px;
}

.about-affiliation-item {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
    line-height: 1.8;
}

.about-org {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.4);
    margin-bottom: 30px;
}

.about-bio {
    margin-bottom: 40px;
}

.about-bio p {
    font-size: 0.95rem;
    line-height: 2;
    color: rgba(255, 255, 255, 0.7);
}

.about-links-dark {
    display: flex;
    gap: 20px;
}

.link-dark {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
    transition: color 0.3s ease;
}

.link-dark:hover {
    color: #ffffff;
}

/* Page Header Dark */
.page-header-dark {
    margin-bottom: 50px;
    display: flex;
    justify-content: space-between;
    align-items: baseline;
}

.page-title-dark {
    font-size: 2.5rem;
    font-weight: 700;
    color: #ffffff;
    letter-spacing: -0.02em;
}

.scholar-link-dark {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
    transition: color 0.3s ease;
}

.scholar-link-dark:hover {
    color: var(--accent);
}

/* Publications Filter Dark */
.publications-filter-dark {
    display: flex;
    gap: 10px;
    margin-bottom: 50px;
}

.filter-btn-dark {
    padding: 10px 20px;
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.5);
    background: transparent;
    border: 1px solid #333;
    cursor: pointer;
    transition: all 0.3s ease;
    letter-spacing: 0.05em;
}

.filter-btn-dark:hover,
.filter-btn-dark.active {
    color: #ffffff;
    border-color: #ffffff;
}

/* Publications List Dark */
.pub-year-group-dark {
    margin-bottom: 50px;
}

.pub-year-dark {
    font-size: 1.2rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.3);
    margin-bottom: 25px;
    padding-bottom: 10px;
    border-bottom: 1px solid #222;
}

.pub-item-dark {
    padding: 20px 0;
    border-bottom: 1px solid #1a1a1a;
}

.pub-type-dark {
    display: inline-block;
    font-size: 0.65rem;
    color: rgba(255, 255, 255, 0.4);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 8px;
}

.pub-type-dark.journal {
    color: var(--accent);
}

.pub-title-dark {
    font-size: 1rem;
    font-weight: 500;
    color: #ffffff;
    margin-bottom: 8px;
    line-height: 1.5;
}

.pub-meta-dark {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.5);
}

.pub-link-dark {
    display: inline-block;
    margin-top: 10px;
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.4);
    transition: color 0.3s ease;
}

.pub-link-dark:hover {
    color: var(--accent);
}

.pub-type-dark.book {
    color: #4a9eff;
}

/* Awards List Dark */
.awards-list-dark {
    margin-top: 30px;
}

.award-year-group-dark {
    margin-bottom: 50px;
}

.award-year-dark {
    font-size: 1.2rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.3);
    margin-bottom: 25px;
    padding-bottom: 10px;
    border-bottom: 1px solid #222;
}

.award-item-dark {
    padding: 25px 0;
    border-bottom: 1px solid #1a1a1a;
}

.award-title-dark {
    font-size: 1.1rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 8px;
}

.award-org-dark {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 10px;
}

.award-work-dark {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.6;
}

.award-winner-dark {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.4);
    font-style: italic;
    margin-top: 8px;
}

/* ============================================
   LAB SITE DARK THEME
   ============================================ */

/* Lab Header */
.lab-header-dark {
    padding: 80px 50px 60px;
    border-bottom: 1px solid #1a1a1a;
}

.lab-affiliation-dark {
    font-size: 0.7rem;
    letter-spacing: 0.2em;
    color: rgba(255, 255, 255, 0.4);
    text-transform: uppercase;
}

.lab-name-dark {
    font-size: 2.5rem;
    font-weight: 700;
    color: #ffffff;
    margin: 15px 0 10px;
}

.lab-tagline-dark {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.5);
}

/* Lab News Grid */
.news-grid-dark {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3px;
}

.news-card-dark {
    position: relative;
    overflow: hidden;
    aspect-ratio: 4/3;
}

.news-card-dark.featured {
    grid-column: span 2;
    grid-row: span 2;
}

.news-image-dark {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.news-image-dark img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease, filter 0.6s ease;
    filter: brightness(0.6);
}

.news-card-dark:hover .news-image-dark img {
    transform: scale(1.05);
    filter: brightness(0.4);
}

.news-info-dark {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 25px;
    background: linear-gradient(to top, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0) 100%);
}

.news-date-dark {
    display: block;
    font-size: 0.7rem;
    color: rgba(255, 255, 255, 0.4);
    letter-spacing: 0.1em;
    margin-bottom: 8px;
}

.news-title-dark {
    font-size: 1rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 8px;
    line-height: 1.4;
}

.news-card-dark.featured .news-title-dark {
    font-size: 1.4rem;
}

.news-excerpt-dark {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-archive-link {
    padding: 50px;
    text-align: center;
}

.archive-btn-dark {
    display: inline-block;
    padding: 15px 40px;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.6);
    border: 1px solid #333;
    transition: all 0.3s ease;
}

.archive-btn-dark:hover {
    color: #ffffff;
    border-color: #ffffff;
}

/* Sidebar Personal Link */
.sidebar-personal-link {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px 22px;
    color: #4a9eff;
    transition: all 0.3s ease;
    white-space: nowrap;
    overflow: hidden;
    font-weight: 600;
}

.sidebar-personal-link svg {
    width: 22px;
    height: 22px;
    flex-shrink: 0;
}

.sidebar-personal-link span {
    opacity: 0;
    transition: opacity 0.3s ease;
    font-size: 0.85rem;
}

.sidebar:hover .sidebar-personal-link span {
    opacity: 1;
}

.sidebar-personal-link:hover {
    background: rgba(74, 158, 255, 0.1);
}

/* Lab Sub Pages */
.lab-page-header {
    padding: 80px 50px 40px;
    border-bottom: 1px solid #1a1a1a;
}

.lab-page-title {
    font-size: 2rem;
    font-weight: 700;
    color: #ffffff;
}

.lab-page-content {
    padding: 50px;
    max-width: 1000px;
}

/* Lab About */
.lab-about-photo {
    margin-bottom: 40px;
}

.lab-about-photo img {
    width: 100%;
    max-width: 800px;
    height: auto;
    filter: grayscale(30%);
    transition: filter 0.3s ease;
}

.lab-about-photo img:hover {
    filter: grayscale(0%);
}

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

.lab-about-text {
    margin-top: 40px;
}

.lab-about-text p {
    font-size: 0.95rem;
    line-height: 2;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 20px;
}

.lab-stats-grid {
    display: flex;
    flex-direction: row;
    gap: 50px;
    justify-content: flex-start;
    margin-bottom: 20px;
}

.lab-stat-item {
    text-align: left;
}

.lab-stat-number {
    display: block;
    font-size: 3rem;
    font-weight: 700;
    color: #ffffff;
    line-height: 1;
}

.lab-stat-label {
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.4);
    margin-top: 5px;
}

/* Lab Research */
.lab-research-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3px;
}

.lab-research-card {
    position: relative;
    overflow: hidden;
    aspect-ratio: 4/3;
}

.lab-research-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.5);
    transition: all 0.6s ease;
}

.lab-research-card:hover img {
    transform: scale(1.05);
    filter: brightness(0.3);
}

.lab-research-info {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 25px;
    background: linear-gradient(to top, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0) 100%);
}

.lab-research-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 8px;
}

.lab-research-desc {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.5;
}

/* Lab Members */
.lab-professor-section {
    margin-bottom: 60px;
}

.lab-professor-card {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 40px;
    padding: 40px;
    border: 1px solid #222;
}

.lab-professor-image img {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    filter: grayscale(30%);
}

.lab-professor-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 5px;
}

.lab-professor-title {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 20px;
}

.lab-professor-bio {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
    margin-bottom: 20px;
}

.lab-professor-links {
    display: flex;
    gap: 20px;
}

.lab-professor-link {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.5);
    transition: color 0.3s ease;
}

.lab-professor-link:hover {
    color: #ffffff;
}

.lab-students-section h3 {
    font-size: 0.75rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.4);
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 1px solid #222;
}

.lab-student-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.lab-student-category h4 {
    font-size: 0.85rem;
    color: #ffffff;
    margin-bottom: 15px;
}

.lab-student-list {
    list-style: none;
}

.lab-student-item {
    padding: 10px 0;
    border-bottom: 1px solid #1a1a1a;
}

.lab-student-name {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.8);
}

.lab-student-theme {
    display: block;
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.4);
    margin-top: 5px;
}

.lab-alumni-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 30px;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.6);
    border: 1px solid #333;
    transition: all 0.3s ease;
}

.lab-alumni-link:hover {
    color: #ffffff;
    border-color: #ffffff;
}

/* Lab Alumni Page (Dark Theme) */
.dark-theme .alumni-year {
    margin-bottom: 60px;
}

.dark-theme .year-title {
    font-size: 0.8rem;
    color: var(--accent);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 1px solid #222;
    font-weight: 600;
}

.dark-theme .alumni-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.dark-theme .alumni-card {
    background: #111111;
    border: 1px solid #222;
    padding: 30px 35px;
    transition: all 0.3s ease;
}

.dark-theme .alumni-card:hover {
    border-color: rgba(255, 255, 255, 0.3);
}

.dark-theme .alumni-name {
    font-size: 1rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 20px;
    letter-spacing: 0.02em;
}

.dark-theme .alumni-details {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.dark-theme .alumni-detail-item {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.dark-theme .detail-label {
    font-size: 0.7rem;
    color: rgba(255, 255, 255, 0.4);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 600;
}

.dark-theme .detail-content {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
}

.dark-theme .alumni-pdf-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--accent);
    padding: 8px 16px;
    border: 1px solid rgba(45, 212, 191, 0.3);
    transition: all 0.3s ease;
    margin-top: 8px;
}

.dark-theme .alumni-pdf-link:hover {
    background: rgba(45, 212, 191, 0.1);
    border-color: var(--accent);
}

.dark-theme .alumni-pdf-link svg {
    width: 16px;
    height: 16px;
}

/* Lab Contact */
.lab-contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.lab-contact-info h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 20px;
}

.lab-contact-info p {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.8;
    margin-bottom: 30px;
}

.lab-contact-item {
    display: flex;
    gap: 15px;
    margin-bottom: 25px;
}

.lab-contact-item svg {
    width: 20px;
    height: 20px;
    color: rgba(255, 255, 255, 0.4);
    flex-shrink: 0;
    margin-top: 3px;
}

.lab-contact-item strong {
    display: block;
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.4);
    margin-bottom: 5px;
}

.lab-contact-item p {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
    margin: 0;
}

.lab-contact-map {
    aspect-ratio: 1;
    filter: grayscale(100%);
    transition: filter 0.3s ease;
}

.lab-contact-map:hover {
    filter: grayscale(0%);
}

.lab-contact-map iframe {
    width: 100%;
    height: 100%;
    border: 0;
}

/* ============================================
   NEWS ARTICLE DARK THEME
   ============================================ */

.news-article-dark {
    max-width: 800px;
    padding: 60px 50px;
}

.news-article-header {
    margin-bottom: 40px;
}

.back-link-dark {
    display: inline-block;
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.4);
    margin-bottom: 30px;
    transition: color 0.3s ease;
}

.back-link-dark:hover {
    color: #ffffff;
}

.news-article-date {
    display: block;
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.4);
    letter-spacing: 0.1em;
    margin-bottom: 15px;
}

.news-article-title {
    font-size: 2rem;
    font-weight: 700;
    color: #ffffff;
    line-height: 1.4;
    margin-bottom: 15px;
}

.news-article-category {
    display: inline-block;
    font-size: 0.7rem;
    color: rgba(255, 255, 255, 0.5);
    letter-spacing: 0.1em;
    padding: 5px 12px;
    border: 1px solid #333;
}

.news-article-hero {
    margin-bottom: 40px;
}

.news-article-hero img {
    width: 100%;
    height: auto;
    filter: brightness(0.9);
}

.news-article-hero figcaption {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.4);
    margin-top: 10px;
}

.news-article-body {
    font-size: 0.95rem;
    line-height: 2;
    color: rgba(255, 255, 255, 0.8);
}

.news-article-body p {
    margin-bottom: 25px;
    text-align: justify;
}

.news-article-body h2 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #ffffff;
    margin: 40px 0 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid #222;
}

.news-article-body ul {
    margin: 20px 0;
    padding-left: 0;
    list-style: none;
}

.news-article-body ul li {
    padding: 15px 0;
    border-bottom: 1px solid #1a1a1a;
}

.news-article-body a {
    color: #4a9eff;
    transition: opacity 0.3s ease;
}

.news-article-body a:hover {
    opacity: 0.7;
}

.news-article-body figure {
    margin: 30px 0;
}

.news-article-body figure img {
    width: 100%;
    height: auto;
}

.news-article-body figure figcaption {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.4);
    margin-top: 10px;
}

.news-article-author {
    margin-top: 50px;
    padding-top: 30px;
    border-top: 1px solid #222;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.4);
    text-align: right;
}

@media (max-width: 768px) {
    .news-article-dark {
        padding: 40px 25px;
    }
    
    .news-article-title {
        font-size: 1.5rem;
    }
}

/* Responsive for Dark Theme */
@media (max-width: 1200px) {
    .portfolio-grid-dark {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .news-grid-dark {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .news-card-dark.featured {
        grid-column: span 2;
        grid-row: span 1;
    }
}

@media (max-width: 900px) {
    .portfolio-grid-dark {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .project-card.featured {
        grid-column: span 2;
        grid-row: span 1;
    }
    
    .about-layout {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .about-photo {
        max-width: 200px;
    }
}

@media (max-width: 768px) {
    .sidebar {
        width: 60px;
    }
    
    .sidebar:hover {
        width: 60px;
    }
    
    .sidebar:hover .sidebar-link span,
    .sidebar:hover .sidebar-lab-link span,
    .sidebar:hover .sidebar-personal-link span {
        opacity: 0;
    }
    
    .main-content {
        margin-left: 60px;
    }
    
    .portfolio-grid-dark {
        grid-template-columns: 1fr;
    }
    
    .project-card,
    .project-card.featured {
        grid-column: span 1;
        grid-row: span 1;
        aspect-ratio: 16/9;
    }
    
    .page-container {
        padding: 60px 25px;
    }
    
    .page-header-dark {
        flex-direction: column;
        gap: 15px;
    }
    
    .page-title-dark {
        font-size: 2rem;
    }
    
    .about-name-dark .name-en {
        font-size: 1.8rem;
    }
    
    /* Lab responsive */
    .lab-header-dark {
        padding: 60px 25px 40px;
    }
    
    .lab-name-dark {
        font-size: 1.8rem;
    }
    
    .news-grid-dark {
        grid-template-columns: 1fr;
    }
    
    .news-card-dark,
    .news-card-dark.featured {
        grid-column: span 1;
        grid-row: span 1;
        aspect-ratio: 16/9;
    }
    
    .lab-about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .lab-stats-grid {
        flex-direction: row;
        justify-content: flex-start;
        gap: 30px;
    }
    
    .lab-research-grid {
        grid-template-columns: 1fr;
    }
    
    .lab-professor-card {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .lab-professor-image {
        max-width: 150px;
        margin: 0 auto;
    }
    
    .lab-professor-links {
        justify-content: center;
    }
    
    .lab-student-grid {
        grid-template-columns: 1fr;
    }
    
    .lab-contact-grid {
        grid-template-columns: 1fr;
    }
    
    .lab-page-content {
        padding: 30px 25px;
    }
}

/* ============================================
   PERSONAL SITE STYLES (Legacy)
   ============================================ */

/* Personal Site Navigation */
.navbar-personal {
    background: transparent;
}

.navbar-personal .logo-text {
    font-size: 0.85rem;
    letter-spacing: 0.1em;
}

.navbar-personal .nav-link-lab {
    color: var(--accent);
    font-weight: 600;
}

/* Personal Hero */
.personal-hero {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
    padding: 120px 60px 80px;
}

.personal-hero-content {
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.2s forwards;
}

.personal-intro {
    margin-bottom: 30px;
}

.personal-name {
    margin-bottom: 15px;
}

.personal-name .name-en {
    display: block;
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.1;
    color: var(--black);
}

.personal-name .name-jp {
    display: block;
    font-size: 1rem;
    color: var(--gray-500);
    letter-spacing: 0.2em;
    margin-top: 8px;
}

.personal-title {
    font-size: 1rem;
    color: var(--gray-600);
    letter-spacing: 0.05em;
    margin-bottom: 5px;
}

.personal-affiliation {
    font-size: 0.85rem;
    color: var(--gray-500);
}

.personal-statement {
    font-size: 1.1rem;
    line-height: 2;
    color: var(--gray-700);
    margin-bottom: 40px;
    max-width: 500px;
}

.personal-links {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}

.personal-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    font-size: 0.8rem;
    color: var(--gray-600);
    border: 1px solid var(--gray-300);
    transition: all 0.3s ease;
}

.personal-link svg {
    width: 14px;
    height: 14px;
}

.personal-link:hover {
    color: var(--black);
    border-color: var(--black);
}

.personal-link-lab {
    background: var(--black);
    color: var(--white);
    border-color: var(--black);
}

.personal-link-lab:hover {
    background: var(--gray-800);
    color: var(--white);
}

.personal-hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.4s forwards;
}

.personal-hero-image img {
    width: 100%;
    max-width: 450px;
    height: auto;
    object-fit: cover;
    filter: grayscale(20%);
    transition: filter 0.5s ease;
}

.personal-hero-image img:hover {
    filter: grayscale(0%);
}

/* Projects Section */
.projects-section {
    background: var(--gray-100);
    padding: 100px 0;
}

.projects-header {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 40px 50px;
}

.projects-title {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 10px;
}

.projects-subtitle {
    font-size: 0.9rem;
    color: var(--gray-500);
    letter-spacing: 0.05em;
}

/* Personal Footer */
.footer-personal {
    background: var(--white);
    border-top: 1px solid var(--gray-200);
}

.footer-content-simple {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 30px;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--gray-200);
}

.footer-name {
    display: block;
    font-size: 1rem;
    font-weight: 600;
    color: var(--black);
}

.footer-content-simple .footer-affiliation {
    font-size: 0.8rem;
    color: var(--gray-500);
}

.footer-personal .footer-nav {
    display: flex;
    gap: 30px;
}

.footer-personal .footer-nav a {
    font-size: 0.8rem;
    color: var(--gray-600);
    transition: color 0.3s ease;
}

.footer-personal .footer-nav a:hover {
    color: var(--black);
}

.footer-personal .footer-bottom p {
    color: var(--gray-500);
}

/* ============================================
   LAB SITE STYLES
   ============================================ */

/* Lab Navigation */
.navbar-lab {
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
}

.navbar-lab .logo-text,
.navbar-lab .logo-sub {
    color: var(--black);
}

.navbar-lab .nav-link {
    color: var(--gray-600);
}

.navbar-lab .nav-link:hover,
.navbar-lab .nav-link.active {
    color: var(--black);
}

.navbar-lab .nav-link-personal {
    color: var(--accent);
    font-weight: 600;
}

.navbar-lab .hamburger,
.navbar-lab .hamburger::before,
.navbar-lab .hamburger::after {
    background: var(--black);
}

/* Lab Hero */
.lab-hero {
    background: var(--black);
    padding: 150px 40px 80px;
    text-align: center;
}

.lab-hero-content {
    max-width: 800px;
    margin: 0 auto;
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.2s forwards;
}

.lab-affiliation {
    display: inline-block;
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.5);
    letter-spacing: 0.15em;
    margin-bottom: 20px;
}

.lab-title {
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: 700;
    color: var(--white);
    letter-spacing: 0.05em;
    margin-bottom: 10px;
}

.lab-subtitle {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.4);
    letter-spacing: 0.3em;
    text-transform: uppercase;
    margin-bottom: 30px;
}

.lab-tagline {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.6);
    max-width: 500px;
    margin: 0 auto;
}

/* News More Button */
.news-more {
    text-align: center;
    margin-top: 50px;
}

/* Section Description */
.section-desc {
    font-size: 0.9rem;
    color: var(--gray-500);
    margin-top: 10px;
}

/* Awards More Button */
.awards-more {
    text-align: center;
    margin-top: 40px;
}

/* Button Outline Style */
.btn-outline {
    display: inline-flex;
    align-items: center;
    padding: 14px 28px;
    font-size: 0.8rem;
    color: var(--gray-600);
    background: transparent;
    border: 1px solid var(--gray-300);
    letter-spacing: 0.05em;
    transition: all 0.3s ease;
    cursor: pointer;
}

.btn-outline:hover {
    color: var(--black);
    border-color: var(--black);
}

/* Publications More */
.publications-more {
    text-align: center;
    margin-top: 40px;
}

/* Profile Link */
.profile-link {
    font-size: 0.8rem;
    color: var(--gray-600);
    margin-left: 15px;
    transition: color 0.3s ease;
}

.profile-link:hover {
    color: var(--accent);
}

/* Responsive for Personal Site */
@media (max-width: 992px) {
    .personal-hero {
        grid-template-columns: 1fr;
        gap: 50px;
        padding: 100px 30px 60px;
        text-align: center;
    }
    
    .personal-hero-content {
        order: 2;
    }
    
    .personal-hero-image {
        order: 1;
    }
    
    .personal-hero-image img {
        max-width: 300px;
    }
    
    .personal-statement {
        margin: 0 auto 40px;
    }
    
    .personal-links {
        justify-content: center;
    }
}

@media (max-width: 600px) {
    .personal-name .name-en {
        font-size: 2rem;
    }
    
    .footer-content-simple {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
    
    .footer-personal .footer-nav {
        flex-wrap: wrap;
        justify-content: center;
        gap: 15px 25px;
    }
    
    .personal-links {
        flex-direction: column;
    }
    
    .personal-link {
        justify-content: center;
    }
}