/* ============================================================
   xGium · Digital Life Future Capsule — Main Stylesheet
   ============================================================ */

:root {
    /* Design.com Color Scheme — Light Theme */
    --primary: #5046e5;
    --primary-light: #7c73ff;
    --primary-dark: #4338ca;
    --primary-bg: rgba(80, 70, 229, 0.06);
    --primary-border: rgba(80, 70, 229, 0.25);
    --accent-gradient: linear-gradient(135deg, #5046e5 0%, #7c3aed 50%, #a78bfa 100%);

    /* Neutral Colors — Light Theme */
    --white: #ffffff;
    --light-gray: #f5f5f5;
    --surface: #f5f5f5;
    --surface-hover: #eeeeee;
    --surface-card: #ffffff;
    --border: #e5e7eb;
    --border-light: #d1d5db;

    /* Text Colors — Light Theme */
    --text: #111827;
    --text-muted: #595959;
    --text-dim: #adadad;
    --text-link: #5046e5;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
    --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-card-hover: 0 10px 25px -5px rgba(80, 70, 229, 0.12), 0 4px 12px -4px rgba(0, 0, 0, 0.08);
}

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

body {
    background-color: var(--white);
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--text);
    line-height: 1.6;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ========= Light Theme Background Layers ========= */
#canvas-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    pointer-events: none;
    background: radial-gradient(ellipse at 20% 50%, rgba(80, 70, 229, 0.04) 0%, transparent 60%);
}

.glow-orb {
    position: fixed;
    width: 60vw;
    height: 60vw;
    background: radial-gradient(circle, rgba(80, 70, 229, 0.06) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
    z-index: -1;
    top: -15%;
    right: -10%;
    filter: blur(80px);
    animation: slowDrift 24s infinite alternate ease-in-out;
}

.glow-orb2 {
    position: fixed;
    width: 50vw;
    height: 50vw;
    background: radial-gradient(circle, rgba(124, 58, 237, 0.05) 0%, transparent 70%);
    bottom: -10%;
    left: -10%;
    filter: blur(70px);
    animation: slowDrift2 30s infinite alternate;
    pointer-events: none;
    z-index: -1;
}

@keyframes slowDrift {
    0% { transform: translate(0, 0) scale(1); opacity: 0.6; }
    100% { transform: translate(5%, 5%) scale(1.15); opacity: 1; }
}

@keyframes slowDrift2 {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(-4%, -4%) scale(1.25); }
}

/* Subtle Grid Pattern — Light Theme */
.grid-pattern {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        repeating-linear-gradient(transparent, transparent 39px, rgba(80, 70, 229, 0.03) 40px),
        repeating-linear-gradient(90deg, transparent, transparent 39px, rgba(80, 70, 229, 0.03) 40px);
    pointer-events: none;
    z-index: -1;
}

.noise {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.015'/%3E%3C/svg%3E");
    pointer-events: none;
    z-index: -1;
    opacity: 0.4;
}

/* Container & Layout System */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
    position: relative;
    z-index: 5;
}

/* ==================== Navigation ==================== */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.2rem 0;
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    flex-wrap: wrap;
    gap: 1rem;
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.92);
}

.logo {
    display: flex;
    align-items: baseline;
    gap: 0.3rem;
    font-family: 'Inter', sans-serif;
    text-decoration: none;
    transition: transform 0.3s ease;
}

.logo:hover {
    transform: translateY(-1px);
}

.logo-icon {
    font-size: 2rem;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.logo-text {
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text);
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    font-weight: 500;
    font-size: 0.92rem;
    letter-spacing: 0.2px;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    transition: all 0.2s ease;
    position: relative;
    padding: 8px 0;
}

.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 0;
    background: var(--accent-gradient);
    transition: width 0.3s ease;
    border-radius: 1px;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--text);
}

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

/* ==================== Hero Section ==================== */
.hero {
    padding: 6rem 0 5rem;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 1000px;
    height: 500px;
    background: radial-gradient(ellipse, rgba(80, 70, 229, 0.06) 0%, transparent 60%);
    pointer-events: none;
}

.hero-kicker {
    font-family: 'Inter', sans-serif;
    font-size: 0.78rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    background: var(--primary-bg);
    display: inline-block;
    padding: 0.4rem 1.2rem;
    border-radius: 999px;
    border: 1px solid var(--primary-border);
    margin-bottom: 2rem;
    color: var(--primary);
    font-weight: 600;
    animation: fadeInUp 0.6s ease-out 0.1s backwards;
}

.hero-kicker::before {
    content: '✦ ';
}

.hero-kicker::after {
    content: ' ✦';
}

.hero h1 {
    font-family: 'Inter', sans-serif;
    font-size: 4.5rem;
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.035em;
    color: var(--text);
    margin-bottom: 1.5rem;
    max-width: 900px;
    animation: fadeInUp 0.6s ease-out 0.2s backwards;
}

.hero-desc {
    font-size: 1.25rem;
    font-weight: 400;
    color: var(--text-muted);
    max-width: 640px;
    border-left: 3px solid var(--primary);
    padding-left: 1.5rem;
    margin: 1.8rem 0;
    line-height: 1.7;
    animation: fadeInUp 0.6s ease-out 0.3s backwards;
}

/* ==================== Section Styles ==================== */
.section {
    margin: 6rem 0;
    animation: fadeInUp 0.6s ease-out backwards;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 3rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

.section-badge {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--primary);
    margin-bottom: 0.8rem;
    padding: 6px 14px;
    border: 1px solid var(--primary-border);
    border-radius: 999px;
    background: var(--primary-bg);
}

.section-title {
    font-family: 'Inter', sans-serif;
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text);
}

.section-sub {
    font-family: 'Inter', sans-serif;
    font-size: 0.72rem;
    letter-spacing: 2px;
    color: var(--text-dim);
    font-weight: 600;
    text-transform: uppercase;
}

/* ==================== Card Grid ==================== */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 2rem;
}

.card {
    background: var(--surface-card);
    border-radius: 16px;
    border: 1px solid var(--border);
    padding: 2rem;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-card);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 16px;
    background: var(--accent-gradient);
    opacity: 0;
    transition: opacity 0.35s ease;
    z-index: 0;
    pointer-events: none;
}

.card:hover {
    transform: translateY(-6px);
    border-color: var(--primary-border);
    box-shadow: var(--shadow-card-hover);
}

.card:hover::before {
    opacity: 0.03;
}

.card > * {
    position: relative;
    z-index: 1;
}

.card-tag {
    font-family: 'Inter', sans-serif;
    font-size: 0.72rem;
    background: var(--primary-bg);
    padding: 0.3rem 1rem;
    border-radius: 999px;
    display: inline-block;
    margin-bottom: 1.2rem;
    letter-spacing: 0.5px;
    color: var(--primary);
    border: 1px solid var(--primary-border);
    font-weight: 600;
}

.card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1.35;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
    color: var(--text);
    transition: color 0.2s ease;
}

.card:hover h3 {
    color: var(--primary);
}

.card p {
    font-size: 0.95rem;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    line-height: 1.65;
}

.card-link {
    font-weight: 600;
    color: var(--primary);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    border-bottom: 2px solid transparent;
    transition: all 0.25s ease;
    font-size: 0.9rem;
    font-family: 'Lato', 'Inter', sans-serif;
}

.card-link:hover {
    gap: 0.8rem;
    border-bottom-color: var(--primary);
    color: var(--primary-dark);
}

/* ==================== Lab Log / Timeline ==================== */
.lab-log {
    background: var(--light-gray);
    border-radius: 16px;
    border: 1px solid var(--border);
    padding: 2.5rem 2.5rem;
    margin: 4rem 0;
    position: relative;
    overflow: hidden;
}

.lab-log::before {
    content: '';
    position: absolute;
    top: -200px;
    right: -100px;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(80, 70, 229, 0.04) 0%, transparent 70%);
    pointer-events: none;
}

.log-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2.5rem;
    position: relative;
    z-index: 1;
}

.log-header h3 {
    font-family: 'Inter', sans-serif;
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text);
}

.log-timeline {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    position: relative;
    z-index: 1;
}

.log-item {
    display: flex;
    gap: 2rem;
    border-left: 2px solid var(--border);
    padding-left: 2rem;
    margin-left: 0.5rem;
    transition: border-color 0.3s ease;
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
}

.log-item:hover {
    border-left-color: var(--primary);
}

.log-date {
    min-width: 110px;
    font-family: 'Inter', sans-serif;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--primary);
    letter-spacing: 0.5px;
    padding-top: 0.2rem;
}

.log-text {
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.65;
    transition: color 0.3s ease;
}

.log-item:hover .log-text {
    color: var(--text);
}

@media (max-width: 680px) {
    .log-item {
        flex-direction: column;
        gap: 0.5rem;
        border-left: none;
        padding-left: 0;
        padding-bottom: 1.5rem;
        border-bottom: 1px solid var(--border);
    }
    .log-date {
        min-width: auto;
    }
}

/* ==================== About Link / Buttons ==================== */
.about-link {
    text-align: center;
    margin: 3rem 0 4rem;
}

.btn-primary {
    font-family: 'Lato', 'Inter', sans-serif;
    background: var(--primary);
    border: none;
    border-radius: 0.375rem;
    padding: 0.85rem 2rem;
    color: #ffffff;
    font-weight: 600;
    transition: background 0.2s ease;
    text-decoration: none;
    font-size: 0.95rem;
    letter-spacing: 0.3px;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    position: relative;
    overflow: hidden;
    box-shadow: 0 1px 2px rgba(80, 70, 229, 0.2);
}

.btn-primary:hover {
    background: var(--primary-dark);
    box-shadow: 0 4px 12px rgba(80, 70, 229, 0.3);
    transform: translateY(-1px);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 1px 2px rgba(80, 70, 229, 0.2);
}

/* ==================== Footer ==================== */
footer {
    text-align: center;
    padding: 4rem 0 3rem;
    font-size: 0.82rem;
    color: var(--text-dim);
    border-top: 1px solid var(--border);
    letter-spacing: 0.5px;
}

footer a {
    color: var(--text-muted);
    text-decoration: none;
    border-bottom: 1px solid var(--border);
    transition: all 0.2s ease;
}

footer a:hover {
    color: var(--primary);
    border-color: var(--primary-border);
}

.icp-footer {
    text-align: center;
    padding: 32px 16px;
    color: var(--text-dim);
    font-size: 13px;
    border-top: 1px solid var(--border);
    margin-top: 40px;
}

.icp-footer a {
    color: var(--text-dim);
    text-decoration: none;
}

/* ==================== Archive Page ==================== */
.archive-hero {
    padding: 4rem 0 3rem;
}

.archive-hero h1 {
    font-family: 'Inter', sans-serif;
    font-size: 3rem;
    font-weight: 700;
    letter-spacing: -0.025em;
    margin-bottom: 1rem;
}

.archive-hero p {
    color: var(--text-muted);
    font-size: 1.1rem;
}

.archive-month {
    margin: 4rem 0 2rem;
}

.archive-month-header {
    font-family: 'Inter', sans-serif;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--primary);
    padding-bottom: 0.6rem;
    border-bottom: 1px solid var(--primary-border);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.archive-item {
    background: var(--surface-card);
    border-radius: 12px;
    border: 1px solid var(--border);
    padding: 1.5rem 2rem;
    margin-bottom: 1rem;
    transition: all 0.25s ease;
    box-shadow: var(--shadow-sm);
}

.archive-item:hover {
    border-color: var(--primary-border);
    box-shadow: var(--shadow-md);
    transform: translateX(4px);
}

.archive-item-date {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary);
    letter-spacing: 0.5px;
    margin-bottom: 0.5rem;
}

.archive-item-text {
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.65;
}

.archive-back {
    text-align: center;
    margin: 4rem 0;
}

/* ==================== About Page ==================== */
.about-section {
    max-width: 720px;
    margin: 0 auto;
}

.about-section h2 {
    font-family: 'Inter', sans-serif;
    font-size: 1.8rem;
    font-weight: 700;
    margin: 3rem 0 1rem;
    letter-spacing: -0.02em;
}

.about-section p {
    font-size: 1.05rem;
    color: var(--text-muted);
    line-height: 1.8;
    margin-bottom: 1.2rem;
}

.about-highlight {
    background: var(--primary-bg);
    border-left: 3px solid var(--primary);
    padding: 1.5rem 2rem;
    border-radius: 0 12px 12px 0;
    margin: 2rem 0;
}

.about-highlight p {
    font-style: italic;
    color: var(--text);
    font-size: 1.1rem;
}

/* ==================== Post Article ==================== */
.post-article {
    padding: 4rem 0;
    max-width: 760px;
    margin: 0 auto;
    animation: fadeInUp 0.6s ease-out backwards;
}

.post-header {
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border);
}

.post-tag {
    font-family: 'Inter', sans-serif;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: none;
    color: var(--primary);
    background: var(--primary-bg);
    display: inline-block;
    padding: 0.35rem 1rem;
    border-radius: 999px;
    border: 1px solid var(--primary-border);
    margin-bottom: 1.5rem;
}

.post-header h1 {
    font-family: 'Inter', sans-serif;
    font-size: 2.6rem;
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.025em;
    margin-bottom: 1rem;
}

.post-meta {
    font-size: 0.85rem;
    color: var(--text-dim);
    letter-spacing: 0.3px;
}

.post-date {
    color: var(--primary);
    font-weight: 600;
}

.post-divider {
    margin: 0 0.5rem;
}

.post-body {
    font-size: 1.05rem;
    line-height: 1.85;
    color: var(--text-muted);
}

.post-lead {
    font-size: 1.15rem;
    color: var(--text);
    line-height: 1.75;
    margin-bottom: 2.5rem;
    padding-left: 1.5rem;
    border-left: 3px solid var(--primary);
}

.post-body h2 {
    font-family: 'Inter', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
    margin: 2.5rem 0 1rem;
    letter-spacing: -0.015em;
}

.post-body h3 {
    font-family: 'Inter', sans-serif;
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text);
    margin: 2rem 0 0.75rem;
}

.post-body p {
    margin-bottom: 1.2rem;
}

.post-body ul, .post-body ol {
    margin: 1rem 0 1.5rem 1.5rem;
}

.post-body li {
    margin-bottom: 0.6rem;
    line-height: 1.7;
}

.post-body strong {
    color: var(--text);
    font-weight: 600;
}

.post-body em {
    color: var(--text);
}

.post-refs {
    font-size: 0.85rem !important;
    color: var(--text-dim) !important;
    margin-top: 2.5rem !important;
    padding-top: 1.5rem !important;
    border-top: 1px solid var(--border) !important;
    list-style: none !important;
    margin-left: 0 !important;
}

.post-refs li {
    margin-bottom: 0.4rem !important;
}

.post-refs em {
    color: var(--text-dim);
    font-style: italic;
}

.post-back {
    text-align: center;
    margin: 4rem 0 2rem;
}

/* Post Chinese optimization */
html[lang="zh-CN"] .post-header h1,
html[lang="zh-CN"] .post-body h2,
html[lang="zh-CN"] .post-body h3 {
    font-family: 'Noto Sans SC', 'Inter', sans-serif;
    letter-spacing: 0.02em;
}

html[lang="zh-CN"] .post-body {
    line-height: 2;
}

html[lang="zh-CN"] .post-lead {
    line-height: 1.9;
}

/* ==================== Responsive Design ==================== */
@media (max-width: 768px) {
    .container {
        padding: 0 1.5rem;
    }

    .hero {
        padding: 4rem 0 3rem;
    }

    .hero h1 {
        font-size: 2.8rem;
    }

    .hero-desc {
        font-size: 1.1rem;
    }

    .section-title {
        font-size: 1.6rem;
    }

    .card-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .nav-links {
        gap: 1.5rem;
        font-size: 0.85rem;
    }

    .lang-switch {
        font-size: 0.75rem;
        padding: 0.25rem 0.6rem;
    }

    .lab-log {
        padding: 2rem 1.5rem;
    }

    .archive-hero h1 {
        font-size: 2.2rem;
    }

    .archive-item {
        padding: 1.2rem 1.5rem;
    }

    .post-header h1 {
        font-size: 1.8rem;
    }

    .post-body {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2.2rem;
    }

    .navbar {
        padding: 1rem 0;
    }

    .logo-icon {
        font-size: 1.6rem;
    }

    .logo-text {
        font-size: 1.4rem;
    }

    .nav-links {
        gap: 1rem;
    }

    .lang-switch {
        font-size: 0.72rem;
        padding: 0.2rem 0.5rem;
    }

    .archive-hero h1 {
        font-size: 1.8rem;
    }

    .post-header h1 {
        font-size: 1.6rem;
    }

    .post-lead {
        font-size: 1.05rem;
    }
}

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

.section:nth-child(1) { animation-delay: 0.1s; }
.section:nth-child(2) { animation-delay: 0.2s; }
.section:nth-child(3) { animation-delay: 0.3s; }

/* ==================== Language Switcher ==================== */
.lang-switch {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    font-size: 0.8rem;
    font-weight: 500;
    padding: 0.3rem 0.8rem;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--surface);
    flex-shrink: 0;
}

.lang-btn {
    color: var(--text-muted);
    text-decoration: none;
    padding: 0.15rem 0.5rem;
    border-radius: 999px;
    transition: all 0.2s ease;
    cursor: pointer;
    font-weight: 400;
    white-space: nowrap;
}

.lang-btn:hover {
    color: var(--primary);
    background: var(--primary-bg);
}

.lang-btn.active {
    color: var(--primary);
    font-weight: 600;
    background: var(--primary-bg);
    pointer-events: none;
}

.lang-sep {
    color: var(--text-dim);
    user-select: none;
}

/* Chinese font optimization */
html[lang="zh-CN"] body {
    font-family: 'Noto Sans SC', 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
}

html[lang="zh-CN"] .hero h1 {
    font-family: 'Noto Sans SC', 'Inter', sans-serif;
    line-height: 1.25;
    letter-spacing: 0.02em;
}

html[lang="zh-CN"] .section-title,
html[lang="zh-CN"] .card h3,
html[lang="zh-CN"] .log-header h3,
html[lang="zh-CN"] .archive-hero h1,
html[lang="zh-CN"] .archive-month-header,
html[lang="zh-CN"] .about-section h2 {
    font-family: 'Noto Sans SC', 'Inter', sans-serif;
    letter-spacing: 0.02em;
}

html[lang="zh-CN"] .hero-desc,
html[lang="zh-CN"] .card p,
html[lang="zh-CN"] .log-text,
html[lang="zh-CN"] .archive-item-text,
html[lang="zh-CN"] .about-section p {
    line-height: 1.85;
}

/* Chinese hero subtitle: uppercase looks bad in Chinese, so normalize */
html[lang="zh-CN"] .hero-kicker {
    text-transform: none;
    letter-spacing: 1px;
    font-size: 0.85rem;
}