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

:root {
    --black: #000000;
    --white: #ffffff;
    --gray: #888888;
    --gray-dark: #333333;
    --gray-light: #cccccc;
    --font-sans: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'DM Mono', monospace;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background-color: var(--black);
    color: var(--white);
    font-size: 16px;
    line-height: 1.6;
    font-weight: 300;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--white);
    text-decoration: none;
    transition: opacity 0.2s ease;
}

a:hover {
    opacity: 0.6;
}

/* Header & Navigation */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 24px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--black);
}

.logo {
    font-size: 18px;
    font-weight: 500;
    letter-spacing: -0.02em;
}

nav {
    display: flex;
    gap: 32px;
}

nav a {
    font-size: 14px;
    font-weight: 400;
    letter-spacing: 0.01em;
}

nav a.active {
    opacity: 0.6;
}

/* Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 24px;
    height: 24px;
    cursor: pointer;
    z-index: 101;
}

.hamburger span {
    display: block;
    width: 100%;
    height: 1px;
    background-color: var(--white);
    transition: all 0.3s ease;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(4px, 4px);
}

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

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(4px, -4px);
}

/* Mobile Menu Overlay */
.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--black);
    z-index: 99;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 32px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

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

.mobile-menu a {
    font-size: 32px;
    font-weight: 300;
    letter-spacing: -0.02em;
}

/* Sections */
section {
    min-height: 100vh;
    padding: 120px 40px 80px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.section-label {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--gray);
    letter-spacing: 0.05em;
    margin-bottom: 24px;
    text-transform: uppercase;
}

h1 {
    font-size: clamp(40px, 8vw, 72px);
    font-weight: 300;
    letter-spacing: -0.03em;
    line-height: 1.1;
    max-width: 900px;
    margin-bottom: 32px;
}

h2 {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 300;
    letter-spacing: -0.02em;
    line-height: 1.2;
    max-width: 800px;
    margin-bottom: 32px;
}

p {
    font-size: 18px;
    line-height: 1.7;
    color: var(--gray-light);
    max-width: 640px;
    margin-bottom: 24px;
}

p.large {
    font-size: 24px;
    line-height: 1.5;
    color: var(--white);
}

/* Home Section */
#home {
    padding-top: 80px;
    min-height: auto;
    padding-bottom: 120px;
    justify-content: flex-start;
}

#home h1 {
    max-width: 1000px;
}

.cta-button {
    display: inline-block;
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 16px 32px;
    border: 1px solid var(--white);
    margin-top: 16px;
    transition: all 0.2s ease;
    width: 215px;
}

.cta-button:hover {
    background-color: var(--white);
    color: var(--black);
    opacity: 1;
}

.home-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 48px;
    margin-top: 120px;
    padding-top: 80px;
    border-top: 1px solid var(--gray-dark);
}

.feature h3 {
    font-size: 20px;
    font-weight: 400;
    letter-spacing: -0.01em;
    margin-bottom: 20px;
}

.feature p {
    font-size: 16px;
    line-height: 1.6;
    margin-bottom: 0;
}

.stats {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 24px;
    margin-bottom: 20px;
}

.stat {
    font-family: var(--font-mono);
    font-size: 14px;
    color: var(--white);
    letter-spacing: 0.01em;
}

.stat:not(:last-child)::after {
    content: "·";
    margin-left: 24px;
    color: var(--gray);
}

/* Grid Layout for People & Portfolio */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 40px;
    margin-top: 48px;
}

/* Values List for About */
.values-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 48px 64px;
    margin-top: 64px;
}

.value h3 {
    font-size: 20px;
    font-weight: 400;
    letter-spacing: -0.01em;
    margin-bottom: 16px;
    display: flex;
    align-items: baseline;
    gap: 12px;
}

.value-number {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--gray);
    flex-shrink: 0;
}

.value p {
    font-size: 16px;
    line-height: 1.7;
    margin-bottom: 0;
}

/* Our Model Section */
.model-section {
    margin-top: 96px;
    padding-top: 64px;
    border-top: 1px solid var(--gray-dark);
}

.model-section h3 {
    font-size: 32px;
    font-weight: 300;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.model-intro {
    font-size: 18px;
    color: var(--gray-light);
    max-width: 640px;
    margin-bottom: 48px;
}

.model-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 48px 64px;
}

.model-item h4 {
    font-size: 18px;
    font-weight: 500;
    letter-spacing: -0.01em;
    margin-bottom: 12px;
}

.model-item p {
    font-size: 16px;
    line-height: 1.7;
    color: var(--gray-light);
    margin-bottom: 0;
}

/* Team Bios */
.section-intro {
    font-size: 20px;
    line-height: 1.6;
    color: var(--gray-light);
    max-width: 720px;
}

.team-bios {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 64px;
    margin-top: 64px;
}

.bio {
    border-top: 1px solid var(--gray-dark);
    padding-top: 32px;
}

.bio-header {
    margin-bottom: 24px;
}

.bio-header h3 {
    font-size: 24px;
    font-weight: 400;
    letter-spacing: -0.01em;
    margin-bottom: 8px;
}

.bio-header .role {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--gray);
    letter-spacing: 0.02em;
}

.bio-content p {
    font-size: 16px;
    line-height: 1.7;
    color: var(--gray-light);
    margin-bottom: 16px;
}

.bio-content p:last-child {
    margin-bottom: 0;
}

.social-links {
    display: flex;
    gap: 20px;
    margin-top: 20px;
}

.social-links a {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--gray);
    letter-spacing: 0.02em;
    text-decoration: none;
    transition: color 0.2s ease;
}

.social-links a:hover {
    color: var(--white);
    opacity: 1;
}

.advisor-section {
    margin-top: 80px;
    padding-top: 48px;
    border-top: 1px solid var(--gray-dark);
}

.advisor-section h3 {
    font-size: 24px;
    font-weight: 400;
    letter-spacing: -0.01em;
    margin-bottom: 16px;
}

.advisor-section p {
    font-size: 16px;
    line-height: 1.7;
    color: var(--gray-light);
    max-width: 720px;
    margin-bottom: 0;
}

.advisor-logos {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 2rem 3rem;
    margin-top: 2rem;
    padding: 20px;
}

.advisor-logos img {
    height: 50px;
    width: auto;
    opacity: 0.7;
    transition: opacity 0.2s ease;
}

.advisor-logos img:hover {
    opacity: 1;
}

/* Other Staff Section */
.other-staff-section {
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid #333;
}

.other-staff-section h4 {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: #888;
    margin-bottom: 1.5rem;
    font-weight: 400;
}

.staff-member {
    max-width: 600px;
}

.staff-name {
    font-weight: 500;
    display: block;
    margin-bottom: 0.25rem;
}

.staff-role {
    font-size: 0.875rem;
    color: #888;
    display: block;
    margin-bottom: 0.75rem;
}

.staff-bio {
    font-size: 0.9rem;
    line-height: 1.6;
    color: #aaa;
    margin-bottom: 0.75rem;
}

.staff-member .social-links {
    margin-top: 0.5rem;
}

.staff-member .social-links a {
    font-size: 0.8rem;
}

/* Portfolio Section */
.focus-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 32px;
}

.focus-tag {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--white);
    letter-spacing: 0.02em;
    padding: 8px 16px;
    border: 1px solid var(--gray-dark);
}

.focus-areas {
    margin-top: 64px;
    padding-top: 48px;
    border-top: 1px solid var(--gray-dark);
}

.focus-areas h3 {
    font-size: 24px;
    font-weight: 400;
    letter-spacing: -0.01em;
    margin-bottom: 20px;
}

.focus-areas p {
    font-size: 16px;
    line-height: 1.7;
    color: var(--gray-light);
    max-width: 720px;
    margin-bottom: 16px;
}

.focus-areas p:last-child {
    margin-bottom: 0;
}

.spotlight {
    margin-top: 64px;
    padding-top: 48px;
    border-top: 1px solid var(--gray-dark);
}

.spotlight > h3 {
    font-size: 24px;
    font-weight: 400;
    letter-spacing: -0.01em;
    margin-bottom: 40px;
}

.spotlight-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 64px;
}

.spotlight-item {
    border-top: 1px solid var(--gray-dark);
    padding-top: 32px;
}

.spotlight-header {
    margin-bottom: 24px;
}

.spotlight-header h4 {
    font-size: 24px;
    font-weight: 400;
    letter-spacing: -0.01em;
    margin-bottom: 8px;
}

.spotlight-header h4 a {
    color: var(--white);
    text-decoration: none;
    border-bottom: 1px solid var(--gray-dark);
    padding-bottom: 2px;
    transition: border-color 0.2s ease;
}

.spotlight-header h4 a:hover {
    border-color: var(--white);
    opacity: 1;
}

.spotlight-tagline {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--gray);
    letter-spacing: 0.02em;
}

.spotlight-content p {
    font-size: 15px;
    line-height: 1.7;
    color: var(--gray-light);
    margin-bottom: 16px;
}

.spotlight-content p:last-child {
    margin-bottom: 0;
}

.spotlight-status {
    margin-top: 24px;
    padding-top: 16px;
    border-top: 1px solid var(--gray-dark);
    display: flex;
    flex-wrap: wrap;
    gap: 8px 24px;
}

.status-label {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--white);
    letter-spacing: 0.02em;
}

.status-detail {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--gray);
    letter-spacing: 0.02em;
}

.grid-item {
    border-top: 1px solid var(--gray-dark);
    padding-top: 24px;
}

.grid-item h3 {
    font-size: 20px;
    font-weight: 400;
    margin-bottom: 8px;
    letter-spacing: -0.01em;
}

.grid-item .role,
.grid-item .category {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--gray);
    letter-spacing: 0.02em;
    margin-bottom: 16px;
}

.grid-item p {
    font-size: 15px;
    color: var(--gray-light);
    margin-bottom: 0;
}

/* Writing Section */
.reading-list {
    margin-top: 48px;
    padding: 32px;
    border: 1px solid var(--gray-dark);
}

.reading-list h3 {
    font-size: 16px;
    font-weight: 500;
    letter-spacing: -0.01em;
    margin-bottom: 20px;
}

.reading-list ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px 48px;
}

.reading-list li {
    font-size: 15px;
}

.reading-list a {
    color: var(--gray-light);
    text-decoration: underline;
    text-decoration-color: var(--gray-dark);
    text-underline-offset: 3px;
}

.reading-list a:hover {
    color: var(--white);
    text-decoration-color: var(--white);
    opacity: 1;
}

.article-list {
    margin-top: 48px;
}

.article-card {
    border-top: 1px solid var(--gray-dark);
    padding: 40px 0;
}

.article-content h3 {
    font-size: 28px;
    font-weight: 400;
    letter-spacing: -0.02em;
    margin-bottom: 12px;
    max-width: 720px;
}

.article-meta {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--gray);
    display: block;
    margin-bottom: 20px;
}

.article-content p {
    font-size: 16px;
    line-height: 1.7;
    color: var(--gray-light);
    max-width: 720px;
    margin-bottom: 20px;
}

.read-more {
    font-size: 15px;
    font-weight: 400;
    color: var(--white);
    text-decoration: none;
    border-bottom: 1px solid var(--white);
    padding-bottom: 2px;
}

.read-more:hover {
    opacity: 0.6;
}

/* Collaborate Section */
#collaborate .section-intro {
    color: var(--white);
}

.collab-section {
    margin-top: 64px;
    padding-top: 48px;
    border-top: 1px solid var(--gray-dark);
}

.collab-section h3 {
    font-size: 24px;
    font-weight: 400;
    letter-spacing: -0.01em;
    margin-bottom: 32px;
}

.collab-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 48px;
}

.collab-item h4 {
    font-size: 18px;
    font-weight: 500;
    letter-spacing: -0.01em;
    margin-bottom: 12px;
}

.collab-item p {
    font-size: 15px;
    line-height: 1.6;
    color: var(--gray-light);
    margin-bottom: 0;
}

.focus-intro {
    max-width: 720px;
    margin-bottom: 40px;
    color: var(--gray-light);
}

.focus-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 48px 64px;
}

.focus-category h4 {
    font-size: 18px;
    font-weight: 500;
    letter-spacing: -0.01em;
    margin-bottom: 16px;
}

.focus-category ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.focus-category li {
    font-size: 15px;
    line-height: 1.6;
    color: var(--gray-light);
    padding-left: 16px;
    position: relative;
    margin-bottom: 8px;
}

.focus-category li::before {
    content: "·";
    position: absolute;
    left: 0;
    color: var(--gray);
}

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

.match-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px 64px;
}

.match-item {
    border-left: 2px solid var(--gray-dark);
    padding-left: 20px;
}

.match-label {
    display: block;
    font-size: 16px;
    font-weight: 500;
    margin-bottom: 8px;
}

.match-item p {
    font-size: 15px;
    line-height: 1.6;
    color: var(--gray-light);
    margin-bottom: 0;
}

.contact-link {
    display: inline-block;
    font-size: 18px;
    font-weight: 400;
    padding-bottom: 2px;
    border-bottom: 1px solid var(--white);
    margin-top: 16px;
}

/* Footer */
footer {
    padding: 40px;
    border-top: 1px solid var(--gray-dark);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 24px;
}

footer .copyright {
    font-size: 13px;
    color: var(--gray);
}

footer nav {
    gap: 24px;
}

footer nav a {
    font-size: 13px;
    color: var(--gray);
}

/* Responsive */
@media (max-width: 768px) {
    header {
        padding: 20px 24px;
    }

    header nav {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .mobile-menu {
        display: flex;
    }

    section {
        padding: 100px 24px 60px;
    }

    #home {
        padding-top: 60px;
        padding-bottom: 80px;
    }

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

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

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

    .model-section {
        margin-top: 64px;
        padding-top: 48px;
    }

    .team-bios {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .advisor-section {
        margin-top: 48px;
    }

    .spotlight-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .focus-areas,
    .spotlight {
        margin-top: 48px;
        padding-top: 40px;
    }

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

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

    .match-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .collab-section {
        margin-top: 48px;
        padding-top: 40px;
    }

    .home-features {
        grid-template-columns: 1fr;
        gap: 40px;
        margin-top: 80px;
        padding-top: 60px;
    }

    .stat:not(:last-child)::after {
        display: none;
    }

    .stats {
        flex-direction: column;
        gap: 4px;
    }

    .reading-list ul {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .reading-list {
        padding: 24px;
    }

    .article-content h3 {
        font-size: 22px;
    }

    footer {
        padding: 32px 24px;
        flex-direction: column;
        align-items: flex-start;
    }

    footer nav {
        flex-wrap: wrap;
        gap: 16px;
    }
    
    .advisor-logos {
        gap: 1.5rem 2rem;
        justify-content: center;
    }
    
    .advisor-logos img {
        height: 40px;
    }
}