/* ═══════════════════════════════════════
   Design Tokens
   ═══════════════════════════════════════ */
:root {
    --color-ink: #1a1a1a;
    --color-text: #2d2d2d;
    --color-secondary: #6b6b6b;
    --color-muted: #999;
    --color-border: #e8e5e1;
    --color-surface: #faf9f7;
    --color-white: #ffffff;
    --color-accent: #c4a87c;
    --color-accent-light: rgba(196, 168, 124, 0.08);

    --font-serif: 'Noto Serif SC', 'Songti SC', serif;
    --font-sans: 'Noto Sans SC', 'PingFang SC', sans-serif;
    --font-display: 'Playfair Display', var(--font-serif);

    --space-unit: 8px;
    --space-xs: calc(var(--space-unit) * 2);
    --space-sm: calc(var(--space-unit) * 3);
    --space-md: calc(var(--space-unit) * 4);
    --space-lg: calc(var(--space-unit) * 6);
    --space-xl: calc(var(--space-unit) * 8);
    --space-2xl: calc(var(--space-unit) * 12);
    --space-3xl: calc(var(--space-unit) * 16);
    --space-4xl: calc(var(--space-unit) * 24);

    --ease-out: cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);

    --header-height: 72px;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    font-weight: 300;
    color: var(--color-text);
    background-color: var(--color-surface);
    line-height: 1.8;
    letter-spacing: 0.02em;
    overflow-x: hidden;
}

::selection {
    background: var(--color-accent-light);
    color: var(--color-ink);
}

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

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

/* ═══════════════════════════════════════
   Typography
   ═══════════════════════════════════════ */
h1, h2, h3 {
    font-family: var(--font-serif);
    font-weight: 500;
    color: var(--color-ink);
    line-height: 1.3;
    letter-spacing: 0.01em;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    line-height: 1.15;
}

h2 {
    font-size: clamp(1.75rem, 3vw, 2.75rem);
    margin-bottom: var(--space-lg);
}

h3 {
    font-size: clamp(1.125rem, 1.5vw, 1.375rem);
    font-family: var(--font-sans);
    font-weight: 400;
    color: var(--color-ink);
}

p {
    font-size: clamp(1rem, 1.1vw, 1.125rem);
    color: var(--color-secondary);
    max-width: 640px;
}

.text-display {
    font-family: var(--font-display);
    font-style: italic;
    font-weight: 400;
}

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

.container--wide {
    max-width: 1400px;
}

.section {
    padding: var(--space-4xl) 0;
}

.section--hero {
    padding: var(--space-4xl) 0 var(--space-3xl);
}

.page-hero {
    padding-top: calc(var(--header-height) + var(--space-3xl));
    padding-bottom: var(--space-2xl);
}

/* ═══════════════════════════════════════
   Scroll Reveal
   ═══════════════════════════════════════ */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

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

.reveal-delay-1 { transition-delay: 0.15s; }
.reveal-delay-2 { transition-delay: 0.3s; }
.reveal-delay-3 { transition-delay: 0.45s; }
.reveal-delay-4 { transition-delay: 0.6s; }

/* ═══════════════════════════════════════
   Header / Navigation
   ═══════════════════════════════════════ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 200;
    padding: var(--space-md) 0;
    transition: background-color 0.5s var(--ease-smooth),
                padding 0.5s var(--ease-smooth),
                backdrop-filter 0.5s var(--ease-smooth);
}

.header.is-scrolled {
    background-color: rgba(250, 249, 247, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: var(--space-sm) 0;
    border-bottom: 1px solid rgba(232, 229, 225, 0.5);
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.header__logo {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-ink);
    letter-spacing: 0.08em;
}

.header__logo span {
    font-family: var(--font-display);
    font-weight: 400;
    font-style: italic;
    color: var(--color-secondary);
    margin-left: 0.5em;
    font-size: 0.875rem;
}

.header__nav {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.header__link {
    font-size: 0.875rem;
    font-weight: 400;
    color: var(--color-secondary);
    letter-spacing: 0.04em;
    transition: color 0.3s var(--ease-smooth);
    position: relative;
}

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

.header__link:hover,
.header__link.is-active {
    color: var(--color-ink);
}

.header__link:hover::after,
.header__link.is-active::after {
    width: 100%;
}

/* Language Switcher */
.lang-switcher {
    display: flex;
    align-items: center;
    gap: 2px;
    margin-left: var(--space-md);
    padding: 4px;
    background: rgba(0, 0, 0, 0.03);
    border-radius: 4px;
}

.lang-btn {
    font-size: 0.75rem;
    font-weight: 400;
    color: var(--color-muted);
    padding: 4px 10px;
    border: none;
    background: none;
    cursor: pointer;
    font-family: var(--font-sans);
    letter-spacing: 0.02em;
    transition: all 0.3s var(--ease-smooth);
    border-radius: 2px;
    white-space: nowrap;
}

.lang-btn:hover {
    color: var(--color-secondary);
}

.lang-btn.is-active {
    color: var(--color-ink);
    background: var(--color-white);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

/* ═══════════════════════════════════════
   Hero Section (Home)
   ═══════════════════════════════════════ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
}

.hero__content {
    max-width: 800px;
}

.hero__overline {
    font-size: 0.8125rem;
    font-weight: 400;
    color: var(--color-accent);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: var(--space-md);
}

.hero__title {
    margin-bottom: var(--space-lg);
}

.hero__title em {
    font-style: normal;
    color: var(--color-accent);
}

.hero__subtitle {
    font-size: clamp(1.0625rem, 1.2vw, 1.25rem);
    color: var(--color-secondary);
    line-height: 2;
    margin-bottom: var(--space-xl);
}

.hero__scroll-hint {
    position: absolute;
    bottom: var(--space-xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-muted);
    font-size: 0.75rem;
    letter-spacing: 0.15em;
    animation: float 3s var(--ease-smooth) infinite;
}

.hero__scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--color-muted), transparent);
}

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

/* ═══════════════════════════════════════
   Divider
   ═══════════════════════════════════════ */
.divider {
    width: 48px;
    height: 1px;
    background-color: var(--color-accent);
    margin: var(--space-lg) 0;
    opacity: 0.6;
}

.divider--center {
    margin-left: auto;
    margin-right: auto;
}

/* ═══════════════════════════════════════
   Section Header
   ═══════════════════════════════════════ */
.section-header {
    margin-bottom: var(--space-3xl);
}

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

.section-header--center p {
    margin-left: auto;
    margin-right: auto;
}

.section-header--center .divider {
    margin-left: auto;
    margin-right: auto;
}

.section-label {
    font-size: 0.75rem;
    font-weight: 400;
    color: var(--color-accent);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: var(--space-md);
    display: block;
}

/* ═══════════════════════════════════════
   Philosophy Section
   ═══════════════════════════════════════ */
.philosophy__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-3xl);
}

.philosophy__item {
    padding: 0;
}

.philosophy__icon {
    width: 48px;
    height: 48px;
    margin-bottom: var(--space-md);
    color: var(--color-accent);
}

.philosophy__icon svg {
    width: 100%;
    height: 100%;
    stroke-width: 1.5;
}

.philosophy__item h3 {
    margin-bottom: var(--space-sm);
}

.philosophy__item p {
    font-size: 0.9375rem;
    line-height: 1.9;
}

/* ═══════════════════════════════════════
   Capabilities Section
   ═══════════════════════════════════════ */
.capabilities {
    background-color: var(--color-white);
}

.capabilities__list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl) var(--space-3xl);
}

.capability {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-lg) 0;
    border-bottom: 1px solid var(--color-border);
}

.capability:last-child,
.capability:nth-last-child(2) {
    border-bottom: none;
}

.capability__number {
    font-family: var(--font-display);
    font-size: 2rem;
    font-style: italic;
    color: var(--color-accent);
    opacity: 0.4;
    line-height: 1;
    min-width: 48px;
    padding-top: 4px;
}

.capability__content h3 {
    margin-bottom: var(--space-xs);
}

.capability__content p {
    font-size: 0.9375rem;
    line-height: 1.9;
}

/* ═══════════════════════════════════════
   Vision Section
   ═══════════════════════════════════════ */
.vision {
    position: relative;
    overflow: hidden;
}

.vision__content {
    text-align: center;
    max-width: 720px;
    margin: 0 auto;
}

.vision__quote {
    font-family: var(--font-serif);
    font-size: clamp(1.5rem, 2.5vw, 2rem);
    font-weight: 400;
    color: var(--color-ink);
    line-height: 1.7;
    margin-bottom: var(--space-xl);
    position: relative;
}

.vision__quote::before {
    content: '\201C';
    position: absolute;
    top: -0.4em;
    left: -0.5em;
    font-size: 4em;
    color: var(--color-accent);
    opacity: 0.15;
    font-family: var(--font-display);
    line-height: 1;
}

.vision__metrics {
    display: flex;
    justify-content: center;
    gap: var(--space-3xl);
    margin-top: var(--space-2xl);
    padding-top: var(--space-2xl);
    border-top: 1px solid var(--color-border);
}

.vision__metric {
    text-align: center;
}

.vision__metric-value {
    font-family: var(--font-display);
    font-size: clamp(2rem, 3.5vw, 3rem);
    font-style: italic;
    color: var(--color-ink);
    line-height: 1;
    margin-bottom: var(--space-xs);
}

.vision__metric-label {
    font-size: 0.8125rem;
    color: var(--color-muted);
    letter-spacing: 0.08em;
}

/* ═══════════════════════════════════════
   Contact Section
   ═══════════════════════════════════════ */
.contact {
    background-color: var(--color-ink);
    color: var(--color-surface);
}

.contact .section-label {
    color: var(--color-accent);
}

.contact h2 {
    color: var(--color-surface);
}

.contact p {
    color: rgba(250, 249, 247, 0.6);
}

.contact__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-xl);
}

.contact__info {
    flex: 1;
}

.contact__email-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    font-family: var(--font-serif);
    font-size: clamp(1.25rem, 2vw, 1.75rem);
    color: var(--color-surface);
    margin-top: var(--space-md);
    transition: color 0.3s var(--ease-smooth);
    position: relative;
}

.contact__email-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 1px;
    background-color: var(--color-accent);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.4s var(--ease-out);
}

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

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

.contact__email-icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

.contact__cta {
    font-size: 0.8125rem;
    color: rgba(250, 249, 247, 0.4);
    letter-spacing: 0.1em;
}

/* ═══════════════════════════════════════
   Footer
   ═══════════════════════════════════════ */
.footer {
    background-color: var(--color-ink);
    padding: var(--space-lg) 0;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.footer__copy {
    font-size: 0.75rem;
    color: rgba(250, 249, 247, 0.3);
    letter-spacing: 0.04em;
}

.footer__back-top {
    font-size: 0.75rem;
    color: rgba(250, 249, 247, 0.3);
    letter-spacing: 0.08em;
    transition: color 0.3s var(--ease-smooth);
    cursor: pointer;
    background: none;
    border: none;
    font-family: inherit;
}

.footer__back-top:hover {
    color: var(--color-accent);
}

/* ═══════════════════════════════════════
   Timeline (About Page)
   ═══════════════════════════════════════ */
.timeline {
    position: relative;
    padding-left: 120px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 100px;
    top: 0;
    bottom: 0;
    width: 1px;
    background: linear-gradient(to bottom, transparent, var(--color-border) 5%, var(--color-border) 95%, transparent);
}

.timeline__phase {
    position: relative;
    padding-bottom: var(--space-3xl);
}

.timeline__phase:last-child {
    padding-bottom: 0;
}

.timeline__marker {
    position: absolute;
    left: -120px;
    top: 0;
    width: 100px;
    text-align: right;
}

.timeline__year {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-style: italic;
    color: var(--color-accent);
    line-height: 1;
    display: block;
}

.timeline__period {
    font-size: 0.6875rem;
    color: var(--color-muted);
    letter-spacing: 0.06em;
    margin-top: 4px;
    display: block;
}

.timeline__dot {
    position: absolute;
    left: -24px;
    top: 8px;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background-color: var(--color-accent);
    box-shadow: 0 0 0 4px var(--color-surface), 0 0 0 5px var(--color-border);
}

.timeline__content h3 {
    font-family: var(--font-serif);
    font-size: clamp(1.25rem, 1.8vw, 1.5rem);
    font-weight: 500;
    margin-bottom: var(--space-sm);
    color: var(--color-ink);
}

.timeline__content p {
    font-size: 0.9375rem;
    line-height: 2;
    color: var(--color-secondary);
    margin-bottom: var(--space-sm);
}

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

.timeline__highlights {
    list-style: none;
    margin: var(--space-sm) 0;
    padding: 0;
}

.timeline__highlights li {
    font-size: 0.9375rem;
    line-height: 2;
    color: var(--color-secondary);
    padding-left: var(--space-md);
    position: relative;
}

.timeline__highlights li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 14px;
    width: 6px;
    height: 1px;
    background-color: var(--color-accent);
}

.timeline__insight {
    margin-top: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: var(--color-accent-light);
    border-left: 2px solid var(--color-accent);
    font-size: 0.9375rem;
    line-height: 1.9;
    color: var(--color-text);
    font-style: italic;
}

.timeline__insight p {
    color: var(--color-text);
    max-width: none;
}

/* ═══════════════════════════════════════
   Projects Section
   ═══════════════════════════════════════ */
.projects__list {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.project {
    display: grid;
    grid-template-columns: 160px 1fr auto;
    align-items: start;
    gap: var(--space-lg);
    padding: var(--space-xl) 0;
    border-bottom: 1px solid var(--color-border);
    transition: background-color 0.4s var(--ease-smooth);
    text-decoration: none;
    color: inherit;
    cursor: default;
}

a.project[href] {
    cursor: pointer;
}

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

.project:hover {
    background-color: var(--color-accent-light);
}

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

.project__tag {
    font-size: 0.6875rem;
    color: var(--color-accent);
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

.project__status {
    font-size: 0.75rem;
    color: var(--color-muted);
    letter-spacing: 0.06em;
}

.project h3 {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    margin-bottom: var(--space-xs);
}

.project p {
    font-size: 0.9375rem;
    line-height: 1.9;
}

.project__arrow {
    width: 20px;
    height: 20px;
    color: var(--color-muted);
    transition: color 0.3s var(--ease-smooth), transform 0.3s var(--ease-smooth);
    margin-top: 4px;
}

.project:hover .project__arrow {
    color: var(--color-accent);
    transform: translateX(4px);
}

/* ═══════════════════════════════════════
   Contact Page
   ═══════════════════════════════════════ */
.contact-page {
    min-height: 70vh;
    display: flex;
    align-items: center;
}

.contact-page__inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.contact-page__heading h1 {
    margin-bottom: var(--space-md);
}

.contact-page__heading p {
    font-size: 1.125rem;
    line-height: 2;
}

.contact-page__detail {
    padding: var(--space-xl);
    background: var(--color-white);
    border: 1px solid var(--color-border);
}

.contact-page__detail-label {
    font-size: 0.75rem;
    color: var(--color-muted);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: var(--space-sm);
    display: block;
}

.contact-page__detail-value {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    color: var(--color-ink);
}

.contact-page__detail-value a {
    transition: color 0.3s var(--ease-smooth);
}

.contact-page__detail-value a:hover {
    color: var(--color-accent);
}

.contact-page__extra {
    margin-top: var(--space-xl);
}

.contact-page__extra p {
    font-size: 0.9375rem;
    line-height: 2;
}

/* ═══════════════════════════════════════
   About Intro
   ═══════════════════════════════════════ */
.about-intro {
    max-width: 720px;
    margin-bottom: var(--space-3xl);
}

.about-intro p {
    font-size: 1.0625rem;
    line-height: 2;
}

/* ═══════════════════════════════════════
   Grain Overlay
   ═══════════════════════════════════════ */
.grain-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1000;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    background-repeat: repeat;
    background-size: 256px 256px;
}

/* ═══════════════════════════════════════
   Mobile Menu Toggle Button
   ═══════════════════════════════════════ */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 28px;
    height: 28px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 110;
}

.menu-toggle span {
    display: block;
    width: 100%;
    height: 1.5px;
    background: var(--color-ink);
    transition: all 0.3s var(--ease-smooth);
    transform-origin: center;
}

.menu-toggle.is-active span:nth-child(1) {
    transform: translateY(6.5px) rotate(45deg);
}

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

.menu-toggle.is-active span:nth-child(3) {
    transform: translateY(-6.5px) rotate(-45deg);
}

/* ═══════════════════════════════════════
   Responsive — Tablet (≤1024px)
   ═══════════════════════════════════════ */
@media (max-width: 1024px) {
    .philosophy__grid {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }

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

    .vision__metrics {
        gap: var(--space-xl);
    }

    .project {
        grid-template-columns: 120px 1fr auto;
    }

    .contact-page__inner {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }
}

/* ═══════════════════════════════════════
   Responsive — Mobile (≤768px)
   ═══════════════════════════════════════ */
@media (max-width: 768px) {
    /* — Menu toggle visible — */
    .menu-toggle {
        display: flex;
    }

    /* — Header — */
    .header {
        padding: var(--space-sm) 0;
    }

    .header.is-scrolled {
        padding: var(--space-xs) 0;
    }

    .header__nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--color-surface);
        flex-direction: column;
        align-items: flex-start;
        justify-content: flex-start;
        padding: calc(var(--header-height) + var(--space-lg)) var(--space-lg) var(--space-lg);
        gap: 0;
        box-shadow: -8px 0 30px rgba(0, 0, 0, 0.08);
        transition: right 0.4s var(--ease-out);
        z-index: 105;
        overflow-y: auto;
    }

    .header__nav.is-open {
        right: 0;
    }

    .header__link {
        font-size: 1rem;
        padding: var(--space-sm) 0;
        width: 100%;
        border-bottom: 1px solid var(--color-border);
    }

    .header__link::after {
        display: none;
    }

    .lang-switcher {
        margin-left: 0;
        margin-top: var(--space-lg);
        padding: 6px;
        background: rgba(0, 0, 0, 0.04);
        width: fit-content;
    }

    .lang-btn {
        padding: 6px 14px;
    }

    /* — Mobile overlay — */
    .mobile-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.3);
        z-index: 102;
        opacity: 0;
        transition: opacity 0.4s var(--ease-smooth);
    }

    .mobile-overlay.is-visible {
        display: block;
        opacity: 1;
    }

    /* — Sections — */
    .section {
        padding: var(--space-2xl) 0;
    }

    .page-hero {
        padding-top: calc(var(--header-height) + var(--space-xl));
        padding-bottom: var(--space-xl);
    }

    /* — Hero — */
    .hero {
        min-height: 80vh;
        padding-top: var(--header-height);
    }

    .hero__content {
        max-width: 100%;
    }

    .hero__scroll-hint {
        display: none;
    }

    /* — Typography — */
    h1 {
        font-size: clamp(2rem, 8vw, 2.75rem);
    }

    h2 {
        font-size: clamp(1.5rem, 5vw, 2rem);
    }

    /* — Vision — */
    .vision__metrics {
        flex-direction: column;
        gap: var(--space-lg);
    }

    .vision__quote {
        font-size: clamp(1.25rem, 4vw, 1.5rem);
    }

    .vision__quote::before {
        font-size: 3em;
        top: -0.3em;
        left: -0.3em;
    }

    /* — Contact (home) — */
    .contact__inner {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-lg);
    }

    .contact__email-link {
        font-size: 1.125rem;
    }

    /* — Footer — */
    .footer__inner {
        flex-direction: column;
        gap: var(--space-sm);
        text-align: center;
    }

    /* — Timeline — */
    .timeline {
        padding-left: 60px;
    }

    .timeline::before {
        left: 44px;
    }

    .timeline__marker {
        left: -60px;
        width: 50px;
    }

    .timeline__year {
        font-size: 1rem;
    }

    .timeline__period {
        font-size: 0.625rem;
    }

    .timeline__dot {
        left: -20px;
        width: 7px;
        height: 7px;
    }

    .timeline__content h3 {
        font-size: 1.125rem;
    }

    .timeline__content p {
        font-size: 0.875rem;
        line-height: 1.8;
    }

    .timeline__highlights li {
        font-size: 0.875rem;
        line-height: 1.8;
    }

    .timeline__insight {
        padding: var(--space-sm) var(--space-md);
        font-size: 0.875rem;
    }

    /* — Projects — */
    .project {
        grid-template-columns: 1fr;
        gap: var(--space-xs);
        padding: var(--space-md) 0;
    }

    .project__meta {
        flex-direction: row;
        align-items: center;
        gap: var(--space-sm);
    }

    .project__arrow {
        display: none;
    }

    .project h3 {
        font-size: 1.125rem;
    }

    .project p {
        font-size: 0.875rem;
    }

    /* — Contact Page — */
    .contact-page {
        min-height: auto;
        padding-top: calc(var(--header-height) + var(--space-xl));
        padding-bottom: var(--space-2xl);
    }

    .contact-page__inner {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }

    .contact-page__heading h1 {
        font-size: 2rem;
    }

    .contact-page__detail {
        padding: var(--space-md);
    }

    .contact-page__detail-value {
        font-size: 1.25rem;
    }
}

/* ═══════════════════════════════════════
   Responsive — Small Mobile (≤480px)
   ═══════════════════════════════════════ */
@media (max-width: 480px) {
    :root {
        --header-height: 60px;
    }

    .container {
        padding: 0 var(--space-md);
    }

    .container--wide {
        padding: 0 var(--space-md);
    }

    /* — Header — */
    .header__logo {
        font-size: 1.0625rem;
    }

    .header__logo span {
        display: none;
    }

    .header__nav {
        width: 260px;
    }

    /* — Hero — */
    .hero {
        min-height: 70vh;
    }

    .hero__overline {
        font-size: 0.6875rem;
        letter-spacing: 0.15em;
    }

    .hero__subtitle {
        font-size: 0.9375rem;
        line-height: 1.8;
    }

    .hero__subtitle br {
        display: none;
    }

    /* — Philosophy — */
    .philosophy__grid {
        gap: var(--space-lg);
    }

    .philosophy__item h3 {
        font-size: 1rem;
    }

    .philosophy__item p {
        font-size: 0.875rem;
    }

    /* — Capability — */
    .capability {
        flex-direction: column;
        gap: var(--space-sm);
    }

    .capability__number {
        font-size: 1.5rem;
    }

    /* — Timeline — */
    .timeline {
        padding-left: 32px;
    }

    .timeline::before {
        left: 16px;
    }

    .timeline__marker {
        position: relative;
        left: 0;
        width: auto;
        text-align: left;
        margin-bottom: var(--space-xs);
        display: flex;
        align-items: baseline;
        gap: var(--space-sm);
    }

    .timeline__dot {
        left: -20px;
        top: 8px;
    }

    .timeline__phase {
        padding-bottom: var(--space-xl);
    }

    /* — Vision — */
    .vision__metric-value {
        font-size: 2rem;
    }

    /* — Section Header — */
    .section-header {
        margin-bottom: var(--space-xl);
    }

    .divider {
        margin: var(--space-sm) 0;
    }
}

/* ═══════════════════════════════════════
   Reduced Motion
   ═══════════════════════════════════════ */
@media (prefers-reduced-motion: reduce) {
    .reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }

    .hero__scroll-hint {
        animation: none;
    }

    html {
        scroll-behavior: auto;
    }
}