:root {
    --background: #ffffff;
    --foreground: #000000;
    --muted: #f5f5f5;
    --muted-foreground: #525252;
    --border: #000000;
    --border-light: #e5e5e5;
    --surface: #ffffff;
    --surface-inverse: #000000;
    --surface-inverse-text: #ffffff;
    --font-display: "Playfair Display", Georgia, serif;
    --font-body: "Source Serif 4", Georgia, serif;
    --font-zh: "Songti SC", "STSong", "SimSun", serif;
    --font-mono: "JetBrains Mono", monospace;
    --container-width: 72rem;
    --section-space: clamp(5.5rem, 10vw, 9rem);
    --transition-fast: 100ms linear;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    min-height: 100%;
}

html {
    scroll-behavior: smooth;
}

body {
    position: relative;
    overflow-x: hidden;
    background: var(--background);
    color: var(--foreground);
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.625;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

body::before,
body::after {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
}

body::before {
    z-index: 0;
    background-image: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 1px,
        #000000 1px,
        #000000 2px
    );
    background-size: 100% 4px;
    opacity: 0.015;
}

body::after {
    z-index: 0;
    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='0.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    opacity: 0.02;
}

header,
main,
footer {
    position: relative;
    z-index: 1;
}

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

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

button,
input,
textarea,
select {
    font: inherit;
}

::selection {
    background: #000000;
    color: #ffffff;
}

.container {
    width: min(var(--container-width), calc(100% - 3rem));
    margin: 0 auto;
}

.lang-en-content {
    font-family: var(--font-body);
}

.lang-zh-content {
    font-family: var(--font-zh);
}

.skip-link {
    position: absolute;
    left: 1rem;
    top: 1rem;
    z-index: 50;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border);
    background: var(--foreground);
    color: var(--background);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    transform: translateY(-200%);
    transition: transform var(--transition-fast);
}

.skip-link:focus-visible {
    transform: translateY(0);
    outline: 3px solid var(--foreground);
    outline-offset: 3px;
}

header {
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(255, 255, 255, 0.92);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(8px);
}

body.is-scrolled header {
    background: rgba(255, 255, 255, 0.98);
}

header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem 2rem;
    min-height: 5.25rem;
}

.logo {
    display: inline-flex;
    align-items: center;
    gap: 0.9rem;
    font-family: var(--font-display);
    font-size: 1.55rem;
    font-weight: 700;
    letter-spacing: -0.03em;
}

.symbol {
    min-width: 3.35rem;
    padding: 0.35rem 0.7rem;
    border: 2px solid var(--border);
    background: var(--foreground);
    color: var(--background);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 0.08em;
}

.logo-wordmark {
    line-height: 1;
}

nav ul {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 0.5rem 1.25rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

nav a {
    display: inline-flex;
    align-items: center;
    min-height: 2.75rem;
    padding: 0.125rem 0;
    border-bottom: 2px solid transparent;
    color: var(--foreground);
    font-family: var(--font-mono);
    font-size: 0.76rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    transition: border-color var(--transition-fast), background-color var(--transition-fast), color var(--transition-fast);
}

nav a:hover,
nav a:focus-visible {
    border-bottom-color: var(--border);
    outline: none;
}

.lang-toggle-button {
    min-height: 2.75rem;
    padding: 0.625rem 0.95rem;
    border: 2px solid var(--border);
    background: var(--background);
    color: var(--foreground);
    font-family: var(--font-mono);
    font-size: 0.74rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    cursor: pointer;
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.lang-toggle-button:hover,
.lang-toggle-button:focus-visible {
    background: var(--foreground);
    color: var(--background);
    outline: 3px solid var(--foreground);
    outline-offset: 3px;
}

main > section {
    position: relative;
    padding: var(--section-space) 0;
}

h1,
h2,
h3 {
    margin: 0;
    color: inherit;
}

h2 {
    max-width: 10ch;
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    line-height: 0.95;
    letter-spacing: -0.04em;
}

.section-lead {
    max-width: 42rem;
    margin: 1.5rem 0 0;
    color: var(--muted-foreground);
    font-size: 1.15rem;
}

hr {
    width: min(var(--container-width), calc(100% - 3rem));
    height: 4px;
    margin: 0 auto;
    border: 0;
    background: var(--foreground);
}

.hero {
    padding-top: clamp(4rem, 7vw, 6rem);
    padding-bottom: clamp(4.5rem, 8vw, 7rem);
    min-height: calc(100svh - 5.25rem);
}

.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(#00000008 1px, transparent 1px),
        linear-gradient(90deg, #00000008 1px, transparent 1px);
    background-size: 40px 40px;
    opacity: 0.5;
    pointer-events: none;
}

.hero::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(255, 255, 255, 0.95) 0%, rgba(255, 255, 255, 0.92) 38%, rgba(255, 255, 255, 0.5) 62%, rgba(255, 255, 255, 0.08) 100%);
    pointer-events: none;
}

.hero-bg-image {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(1) contrast(1.12);
    opacity: 0.2;
}

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

.hero-copy {
    max-width: 60rem;
    padding: 2.25rem 0 0;
    border-top: 8px solid var(--foreground);
}

.hero-ornament {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    margin-bottom: 1.4rem;
}

.hero-ornament-square {
    width: 0.95rem;
    height: 0.95rem;
    border: 2px solid var(--border);
}

.hero-ornament-rule {
    width: min(14rem, 26vw);
    border-top: 4px solid var(--border);
}

.hero-kicker {
    margin: 0 0 1.2rem;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.hero h1 {
    max-width: none;
    margin-bottom: 1.4rem;
    font-family: var(--font-display);
    font-size: clamp(3.1rem, 7vw, 5.15rem);
    line-height: 0.92;
    letter-spacing: -0.045em;
}

.hero-title-line {
    display: block;
    white-space: nowrap;
}

.hero-title-zh {
    font-size: clamp(2.5rem, 6.2vw, 5rem);
    line-height: 1.06;
    letter-spacing: -0.02em;
}

.hero-intro {
    max-width: 43rem;
    margin: 0 0 1.9rem;
    font-size: 1.25rem;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.875rem;
    margin-bottom: 1.9rem;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 3rem;
    padding: 0.9rem 1.5rem;
    border: 2px solid var(--border);
    font-family: var(--font-mono);
    font-size: 0.78rem;
    font-weight: 500;
    letter-spacing: 0.13em;
    text-transform: uppercase;
    transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.button-primary {
    background: var(--foreground);
    color: var(--background);
}

.button-primary:hover,
.button-primary:focus-visible {
    background: var(--background);
    color: var(--foreground);
    outline: 3px solid var(--foreground);
    outline-offset: 3px;
}

.button-secondary {
    background: transparent;
    color: var(--foreground);
}

.button-secondary:hover,
.button-secondary:focus-visible {
    background: var(--foreground);
    color: var(--background);
    outline: 3px solid var(--foreground);
    outline-offset: 3px;
}

.hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem 1rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.hero-meta span {
    position: relative;
    padding-right: 1rem;
}

.hero-meta span::after {
    content: "";
    position: absolute;
    right: 0;
    top: 50%;
    width: 0.35rem;
    height: 1px;
    background: var(--foreground);
    transform: translateY(-50%);
}

.hero-meta span:last-child {
    padding-right: 0;
}

.hero-meta span:last-child::after {
    content: none;
}

#about-us {
    background: var(--surface-inverse);
    color: var(--surface-inverse-text);
}

#about-us::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: repeating-linear-gradient(
        90deg,
        transparent,
        transparent 1px,
        #ffffff 1px,
        #ffffff 2px
    );
    background-size: 4px 100%;
    opacity: 0.03;
    pointer-events: none;
}

#about-us .section-lead,
#about-us .hero-info-item p,
#about-us .hero-info-item ol {
    color: rgba(255, 255, 255, 0.8);
}

#about-us .container > h2 {
    font-size: clamp(2.15rem, 5vw, 3.8rem);
}

#about-us .section-lead {
    font-size: 1.03rem;
}

.hero-info-grid {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 1.5rem;
    margin-top: 3rem;
}

.hero-info-item {
    grid-column: span 6;
    min-height: 100%;
    padding: 1.75rem;
    border: 1px solid currentColor;
    background: transparent;
    transition: background-color var(--transition-fast), color var(--transition-fast), border-width var(--transition-fast);
}

.hero-info-item:hover {
    border-width: 2px;
    background: var(--background);
    color: var(--foreground);
}

.hero-info-item h3 {
    margin-bottom: 0.85rem;
    font-family: var(--font-display);
    font-size: 1.65rem;
    line-height: 1;
}

.hero-info-item p,
.hero-info-item ol {
    margin: 0;
    font-size: 0.92rem;
}

.hero-info-item ol {
    padding-left: 1.2rem;
}

.hero-info-item li + li {
    margin-top: 0.45rem;
}

#our-portfolio .container > h2,
#our-portfolio .container > .section-lead,
#news-insights .container > h2,
#news-insights .container > .section-lead {
    margin-left: auto;
    text-align: right;
}

#our-portfolio .container > h2,
#our-team .container > h2,
#news-insights .container > h2 {
    width: fit-content;
    max-width: none;
    white-space: nowrap;
    font-size: clamp(2rem, 4.8vw, 4rem);
}

#news-insights .container > h2.lang-en {
    margin-right: 0.75rem;
    font-size: clamp(1.88rem, 4.3vw, 3.6rem);
}

#our-portfolio .container > .section-lead.lang-en,
#our-team .container > .section-lead.lang-en,
#news-insights .container > .section-lead.lang-en {
    display: block;
    width: 100%;
    max-width: 100%;
    white-space: nowrap;
    font-size: clamp(0.68rem, 1vw, 0.88rem);
    line-height: 1.2;
    letter-spacing: -0.01em;
}

.portfolio-grid {
    counter-reset: portfolio;
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 0.85rem;
    margin-top: 2.5rem;
}

.portfolio-item {
    position: relative;
    grid-column: auto;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 12rem;
    padding: 0.85rem;
    border: 1px solid var(--border);
    background: var(--surface);
    transition: background-color var(--transition-fast), color var(--transition-fast), border-width var(--transition-fast);
}

.portfolio-item::before {
    counter-increment: portfolio;
    content: counter(portfolio, decimal-leading-zero);
    margin-bottom: 1rem;
    color: var(--muted-foreground);
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.14em;
}

.portfolio-item:hover,
.portfolio-item:focus-visible {
    background: var(--foreground);
    color: var(--background);
    border-width: 2px;
    outline: none;
}

.portfolio-logo {
    width: 4.75rem;
    height: 4.75rem;
    margin-bottom: 1rem;
    padding: 0.5rem;
    border: 2px solid var(--border);
    background: var(--muted);
    object-fit: contain;
    filter: grayscale(1) contrast(1.06);
    transition: border-width var(--transition-fast), transform var(--transition-fast);
}

.portfolio-logo-placeholder {
    background:
        linear-gradient(#00000010 1px, transparent 1px),
        linear-gradient(90deg, #00000010 1px, transparent 1px);
    background-size: 18px 18px;
}

.portfolio-item:hover .portfolio-logo,
.portfolio-item:focus-visible .portfolio-logo {
    border-width: 3px;
    transform: scale(1.04);
}

.portfolio-item p {
    margin: auto 0 0;
    font-family: var(--font-display);
    font-size: 1.02rem;
    line-height: 1.08;
}

.team-grid {
    counter-reset: team;
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1rem;
    margin-top: 2.5rem;
}

.team-member {
    position: relative;
    grid-column: auto;
    padding: 0.85rem 0.85rem 1rem;
    border: 1px solid var(--border);
    background: var(--surface);
    transition: background-color var(--transition-fast), color var(--transition-fast), border-width var(--transition-fast);
}

.team-member::before {
    counter-increment: team;
    content: counter(team, decimal-leading-zero);
    display: block;
    margin-bottom: 1rem;
    color: var(--muted-foreground);
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.14em;
}

.team-member:hover {
    background: var(--foreground);
    color: var(--background);
    border-width: 2px;
}

.team-avatar {
    width: min(100%, 8.75rem);
    aspect-ratio: 4 / 5;
    margin: 0 auto 0.85rem;
    border: 2px solid var(--border);
    object-fit: cover;
    filter: grayscale(1) contrast(1.08);
    transition: border-width var(--transition-fast), transform var(--transition-fast);
}

.team-member:hover .team-avatar {
    border-width: 4px;
    transform: scale(1.02);
}

.team-member h3 {
    margin-bottom: 0.45rem;
    font-family: var(--font-display);
    font-size: 1.45rem;
    line-height: 1;
}

.team-member p {
    margin: 0;
    color: inherit;
    font-family: var(--font-mono);
    font-size: 0.68rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.news-grid {
    display: grid;
    grid-template-columns: 1fr;
    margin-top: 3rem;
}

.news-item {
    padding: 2rem 0 0;
    border-top: 8px solid var(--border);
}

.news-meta {
    margin: 0 0 1rem;
    font-family: var(--font-mono);
    font-size: 0.76rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--muted-foreground);
}

.news-item h3 {
    max-width: none;
    margin-bottom: 0.8rem;
    font-family: var(--font-display);
    font-size: clamp(1.2rem, 1.55vw, 1.55rem);
    line-height: 1.06;
    letter-spacing: -0.02em;
    text-wrap: balance;
}

.news-item h3.lang-en {
    max-width: 68ch;
}

.news-item h3.lang-en.news-headline-fixed {
    width: min(42ch, 100%);
    max-width: none;
    font-size: clamp(1.18rem, 1.5vw, 1.52rem);
    line-height: 1.02;
}

.news-headline-line {
    display: block;
    white-space: nowrap;
}

.news-item h3.lang-zh {
    max-width: 24ch;
    font-size: clamp(1.35rem, 1.8vw, 1.7rem);
}

.news-item > p:not(.news-meta) {
    max-width: 44rem;
    margin: 0 0 1rem;
    font-size: 1.08rem;
    color: var(--muted-foreground);
}

.news-item > p.lang-en:not(.news-meta) {
    font-size: clamp(0.68rem, 1vw, 0.88rem);
    line-height: 1.2;
}

.read-more {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    margin-top: 0.6rem;
    border-bottom: 2px solid transparent;
    font-family: var(--font-mono);
    font-size: 0.76rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    transition: border-color var(--transition-fast);
}

.read-more::after {
    content: "→";
}

.read-more:hover,
.read-more:focus-visible {
    border-bottom-color: var(--border);
    outline: none;
}

#contact-us .container > h2,
#contact-us .container > h2 + h2 {
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}

.contact-content {
    position: relative;
    margin-top: 3rem;
    padding: 2rem;
    border: 2px solid var(--border);
    background: var(--foreground);
    color: var(--background);
    overflow: hidden;
}

.contact-content::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: radial-gradient(
        circle at top center,
        #ffffff,
        transparent 70%
    );
    opacity: 0.05;
    pointer-events: none;
}

.contact-content p {
    position: relative;
    z-index: 1;
    max-width: 45rem;
    margin: 0 0 1rem;
    font-size: 1.12rem;
}

.contact-info {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
    margin-top: 1.8rem;
}

.contact-info p {
    margin: 0;
    padding: 1rem;
    border: 1px solid #ffffff;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.contact-info a {
    border-bottom: 2px solid transparent;
    transition: border-color var(--transition-fast);
}

.contact-info a:hover,
.contact-info a:focus-visible {
    border-bottom-color: #ffffff;
    outline: none;
}

footer {
    padding: 2rem 0 2.75rem;
}

footer p {
    margin: 0;
    color: var(--muted-foreground);
    font-family: var(--font-mono);
    font-size: 0.74rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    text-align: center;
}

.lang-en {
    display: block;
}

.lang-zh {
    display: none;
}

body.chinese .lang-en {
    display: none;
}

body.chinese .lang-zh {
    display: block;
}

body.chinese .section-lead.lang-en {
    display: none !important;
}

body:not(.chinese) #our-portfolio .container > h2.lang-zh,
body:not(.chinese) #our-team .container > h2.lang-zh,
body:not(.chinese) #news-insights .container > h2.lang-zh {
    display: none !important;
}

body.chinese #our-portfolio .container > h2.lang-en,
body.chinese #our-team .container > h2.lang-en,
body.chinese #news-insights .container > h2.lang-en {
    display: none !important;
}

body.chinese #our-portfolio .container > h2.lang-zh,
body.chinese #our-team .container > h2.lang-zh,
body.chinese #news-insights .container > h2.lang-zh {
    display: block !important;
}

.lang-en.inline {
    display: inline;
}

.lang-zh.inline {
    display: none;
}

body.chinese .lang-en.inline {
    display: none;
}

body.chinese .lang-zh.inline {
    display: inline;
}

a:focus-visible,
button:focus-visible {
    outline: 3px solid var(--foreground);
    outline-offset: 3px;
}

@media (max-width: 960px) {
    header .container {
        min-height: auto;
        padding: 0.9rem 0;
        flex-direction: column;
        align-items: flex-start;
        justify-content: flex-start;
        gap: 0.8rem;
    }

    nav {
        width: 100%;
    }

    nav ul {
        justify-content: flex-start;
        flex-wrap: nowrap;
        gap: 0.55rem 0.8rem;
        overflow-x: auto;
        padding-bottom: 0.35rem;
        scrollbar-width: none;
        -ms-overflow-style: none;
    }

    nav ul::-webkit-scrollbar {
        display: none;
    }

    .hero-title-line {
        white-space: normal;
    }

    .hero {
        padding-top: 3.4rem;
        padding-bottom: 4rem;
        min-height: auto;
    }

    .hero-copy {
        max-width: 100%;
        padding-top: 1.75rem;
        border-top-width: 6px;
    }

    .hero-ornament {
        gap: 0.65rem;
        margin-bottom: 1rem;
    }

    .hero-ornament-rule {
        width: min(9rem, 34vw);
        border-top-width: 3px;
    }

    .hero-kicker {
        font-size: 0.72rem;
        letter-spacing: 0.12em;
    }

    .hero-intro {
        max-width: 100%;
        font-size: 1.02rem;
        line-height: 1.55;
    }

    .hero-actions {
        gap: 0.7rem;
        margin-bottom: 1.4rem;
    }

    .button {
        min-height: 2.8rem;
        padding: 0.82rem 1.25rem;
    }

    .hero-meta {
        gap: 0.45rem 0.8rem;
        font-size: 0.68rem;
    }

    .hero-info-item {
        grid-column: span 6;
    }

    .portfolio-grid {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }

    .team-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .contact-info {
        grid-template-columns: 1fr;
    }

    #our-portfolio .container > .section-lead.lang-en,
    #our-team .container > .section-lead.lang-en,
    #news-insights .container > .section-lead.lang-en {
        width: auto;
        white-space: normal;
    }
}

@media (max-width: 720px) {
    .container,
    hr {
        width: calc(100% - 1.5rem);
    }

    .logo {
        gap: 0.65rem;
        font-size: 1.12rem;
    }

    .symbol {
        min-width: 3rem;
        padding: 0.3rem 0.55rem;
        font-size: 0.74rem;
    }

    .logo-wordmark {
        font-size: 0.96em;
    }

    nav a,
    .lang-toggle-button {
        min-height: 2.35rem;
        padding: 0.45rem 0.7rem;
        font-size: 0.64rem;
        letter-spacing: 0.09em;
    }

    h2,
    #our-portfolio .container > h2,
    #our-team .container > h2,
    #our-portfolio .container > .section-lead,
    #news-insights .container > h2,
    #news-insights .container > .section-lead {
        margin-left: 0;
        margin-right: 0;
        text-align: left;
    }

    #our-portfolio .container > h2,
    #our-team .container > h2,
    #news-insights .container > h2 {
        width: auto;
        white-space: normal;
        margin-right: 0;
    }

    main > section {
        padding: 4.1rem 0;
    }

    .hero h1 {
        font-size: clamp(2.25rem, 12vw, 3.6rem);
    }

    .hero-title-zh {
        font-size: clamp(1.85rem, 9vw, 2.8rem);
    }

    .hero-intro {
        font-size: 0.96rem;
        line-height: 1.48;
    }

    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .button {
        width: 100%;
    }

    .section-lead {
        margin-top: 1rem;
        font-size: 0.95rem;
    }

    #about-us .section-lead {
        font-size: 0.92rem;
    }

    .hero-info-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
        margin-top: 2rem;
    }

    .hero-info-item {
        grid-column: span 1;
        padding: 1.25rem;
    }

    .hero-info-item h3 {
        margin-bottom: 0.65rem;
        font-size: 1.35rem;
    }

    .hero-info-item p,
    .hero-info-item ol {
        font-size: 0.86rem;
        line-height: 1.55;
    }

    .portfolio-grid,
    .team-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 0.8rem;
        margin-top: 2rem;
    }

    .portfolio-item,
    .team-member {
        grid-column: span 1;
    }

    .portfolio-item {
        min-height: 10.75rem;
        padding: 0.75rem;
    }

    .portfolio-logo {
        width: 4rem;
        height: 4rem;
        margin-bottom: 0.75rem;
    }

    .portfolio-item p {
        font-size: 0.92rem;
    }

    .team-member {
        padding: 0.75rem 0.75rem 0.9rem;
    }

    .team-avatar {
        width: min(100%, 7rem);
        margin-bottom: 0.75rem;
    }

    .team-member h3 {
        font-size: 1.12rem;
        line-height: 1.05;
    }

    .team-member p {
        font-size: 0.58rem;
        letter-spacing: 0.09em;
    }

    .news-item h3,
    .news-item h3.lang-zh,
    .news-item h3.lang-en.news-headline-fixed {
        max-width: none;
    }

    .news-headline-line {
        white-space: normal;
    }

    .news-grid {
        margin-top: 2rem;
    }

    .news-item {
        padding-top: 1.45rem;
    }

    .news-meta {
        font-size: 0.64rem;
        letter-spacing: 0.11em;
    }

    .news-item h3 {
        margin-bottom: 0.7rem;
        font-size: clamp(1.08rem, 5.3vw, 1.42rem);
    }

    .news-item h3.lang-en.news-headline-fixed {
        width: 100%;
        font-size: clamp(1.02rem, 5vw, 1.28rem);
        line-height: 1.06;
    }

    .news-item > p:not(.news-meta) {
        font-size: 0.92rem;
        line-height: 1.5;
    }

    .news-item > p.lang-en:not(.news-meta) {
        font-size: 0.84rem;
        line-height: 1.45;
    }

    .read-more {
        font-size: 0.68rem;
    }

    .contact-content {
        margin-top: 2rem;
        padding: 1.35rem;
    }

    .contact-content p {
        font-size: 0.98rem;
        line-height: 1.5;
    }

    .contact-info {
        gap: 0.8rem;
        margin-top: 1.25rem;
    }

    .contact-info p {
        padding: 0.85rem;
        font-size: 0.68rem;
        letter-spacing: 0.03em;
    }
}

@media (max-width: 520px) {
    main > section {
        padding: 3.7rem 0;
    }

    .hero-copy,
    .news-item {
        padding-top: 1.2rem;
    }

    .container,
    hr {
        width: calc(100% - 1rem);
    }

    header .container {
        padding: 0.75rem 0;
        gap: 0.65rem;
    }

    nav ul {
        gap: 0.45rem 0.55rem;
        padding-bottom: 0.2rem;
    }

    nav a,
    .lang-toggle-button {
        min-height: 2.2rem;
        padding: 0.38rem 0.62rem;
        font-size: 0.6rem;
    }

    .hero-info-grid,
    .team-grid {
        grid-template-columns: 1fr;
    }

    .hero-info-item,
    .team-member {
        grid-column: auto;
    }

    .portfolio-item {
        min-height: 10.25rem;
    }

    .portfolio-logo {
        width: 3.7rem;
        height: 3.7rem;
    }

    .team-avatar {
        width: min(100%, 6.4rem);
    }

    .hero-meta {
        gap: 0.35rem 0.65rem;
        font-size: 0.62rem;
    }

    .news-item > p:not(.news-meta) {
        font-size: 0.88rem;
    }

    .news-item > p.lang-en:not(.news-meta) {
        font-size: 0.8rem;
    }

    .contact-content {
        padding: 1.15rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        transition-duration: 0ms !important;
        animation-duration: 0ms !important;
    }
}