:root {
    
    --color-ink:          #1a1a1f;
    --color-ink-muted:    #5a5a66;
    --color-ink-light:    #8d8d99;
    --color-surface:      #faf9f7;
    --color-surface-alt:  #f0eee9;
    --color-white:        #ffffff;
    --color-border:       #e2e0db;
    --color-border-light: #eceae5;
    --color-accent:       #b45309;
    --color-accent-hover: #92400e;
    --color-accent-light: #fef3c7;
    --color-cat-tech:     #1d4ed8;
    --color-cat-science:  #047857;
    --color-cat-business: #b45309;
    --color-cat-culture:  #7c3aed;
    --color-cat-news:     #dc2626;

    
    --font-display: 'Instrument Serif', Georgia, 'Times New Roman', serif;
    --font-body:    'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    
    --space-xs:  0.25rem;
    --space-sm:  0.5rem;
    --space-md:  1rem;
    --space-lg:  1.5rem;
    --space-xl:  2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;

    
    --max-width: 1200px;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --transition-fast: 180ms var(--ease-out);
    --transition-base: 300ms var(--ease-out);
}

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

html {
    font-size: 100%;
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.65;
    color: var(--color-ink);
    background-color: var(--color-surface);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

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

a:hover { color: var(--color-accent); }
a:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; border-radius: 2px; }

ul, ol { list-style: none; }

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

.container {
    width: 100%;
    max-width: var(--max-width);
    margin-inline: auto;
    padding-inline: var(--space-lg);
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.skip-link {
    position: absolute;
    top: -100%;
    left: var(--space-md);
    z-index: 9999;
    padding: var(--space-sm) var(--space-md);
    background: var(--color-ink);
    color: var(--color-white);
    font-weight: 600;
    border-radius: var(--radius-sm);
}
.skip-link:focus { top: var(--space-md); color: var(--color-white); }

.top-bar {
    background-color: var(--color-ink);
    color: var(--color-white);
    font-size: 0.8125rem;
    letter-spacing: 0.02em;
}

.top-bar__inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-block: var(--space-sm);
}

.top-bar__date { opacity: 0.7; }

.top-bar__links { display: flex; gap: var(--space-lg); }
.top-bar__links a { color: var(--color-white); opacity: 0.7; transition: opacity var(--transition-fast); }
.top-bar__links a:hover { opacity: 1; color: var(--color-white); }

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    backdrop-filter: blur(12px);
    background-color: rgba(255, 255, 255, 0.95);
}

.site-header__inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-block: var(--space-md);
}

.site-header__logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}
.site-header__logo:hover { color: var(--color-ink); }

.logo-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    background: linear-gradient(135deg, var(--color-accent) 0%, #d97706 100%);
    color: var(--color-white);
    font-family: var(--font-display);
    font-size: 1.05rem;
    font-weight: 400;
    border-radius: var(--radius-sm);
    letter-spacing: -0.02em;
}

.logo-text {
    font-family: var(--font-display);
    font-size: 1.55rem;
    font-weight: 400;
    letter-spacing: -0.03em;
    color: var(--color-ink);
}

.logo-mark--light { background: rgba(255, 255, 255, 0.15); }
.logo-text--light { color: var(--color-white); }

.site-nav__menu {
    display: flex;
    gap: var(--space-xl);
}

.site-nav__menu a {
    font-size: 0.9375rem;
    font-weight: 500;
    letter-spacing: 0.01em;
    color: var(--color-ink-muted);
    position: relative;
    padding-block: var(--space-xs);
}

.site-nav__menu a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: width var(--transition-base);
}

.site-nav__menu a:hover,
.site-nav__menu a.active { color: var(--color-ink); }
.site-nav__menu a:hover::after,
.site-nav__menu a.active::after { width: 100%; }

.site-nav__toggle { display: none; width: 28px; height: 28px; position: relative; }
.hamburger,
.hamburger::before,
.hamburger::after {
    display: block;
    width: 22px;
    height: 2px;
    background-color: var(--color-ink);
    border-radius: 1px;
    transition: transform var(--transition-base), opacity var(--transition-fast);
}
.hamburger { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); }
.hamburger::before { content: ''; position: absolute; top: -7px; }
.hamburger::after  { content: ''; position: absolute; top: 7px; }

.site-nav__toggle[aria-expanded="true"] .hamburger { background: transparent; }
.site-nav__toggle[aria-expanded="true"] .hamburger::before { top: 0; transform: rotate(45deg); }
.site-nav__toggle[aria-expanded="true"] .hamburger::after  { top: 0; transform: rotate(-45deg); }

.hero {
    padding-block: var(--space-2xl) var(--space-xl);
    background: linear-gradient(180deg, var(--color-white) 0%, var(--color-surface) 100%);
}

.hero-card {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 8px 24px rgba(0, 0, 0, 0.04);
    transition: box-shadow var(--transition-base);
}
.hero-card:hover { box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08), 0 12px 32px rgba(0, 0, 0, 0.06); }

.hero-card__image-wrap {
    position: relative;
    overflow: hidden;
    aspect-ratio: 2 / 1;
    background-color: var(--color-surface-alt);
}

.hero-card__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 600ms var(--ease-out);
}
.hero-card:hover .hero-card__image { transform: scale(1.03); }

.hero-card__category {
    position: absolute;
    top: var(--space-lg);
    left: var(--space-lg);
    padding: var(--space-xs) var(--space-md);
    background: var(--color-white);
    color: var(--color-cat-science);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    border-radius: var(--radius-sm);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.hero-card__body {
    padding: var(--space-lg) var(--space-xl) var(--space-xl);
}

.hero-card__title {
    font-family: var(--font-display);
    font-size: clamp(1.6rem, 3vw, 2.4rem);
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-md);
}
.hero-card__title a:hover { color: var(--color-accent); }

.hero-card__excerpt {
    font-size: 1.0625rem;
    color: var(--color-ink-muted);
    line-height: 1.7;
    max-width: 60ch;
}

.hero-card__meta {
    display: flex;
    gap: var(--space-lg);
    margin-top: var(--space-lg);
    font-size: 0.8125rem;
    color: var(--color-ink-light);
}

.meta-author { font-weight: 600; color: var(--color-ink-muted); }

.main-content {
    padding-block: var(--space-2xl) var(--space-4xl);
}

.grid-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: var(--space-3xl);
    align-items: start;
}

.section-heading {
    font-family: var(--font-display);
    font-size: 1.6rem;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-xl);
    padding-bottom: var(--space-md);
    border-bottom: 2px solid var(--color-ink);
}

.story-card--horizontal {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: var(--space-xl);
    padding-bottom: var(--space-xl);
    margin-bottom: var(--space-xl);
    border-bottom: 1px solid var(--color-border-light);
}

.story-card--horizontal:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.story-card__image-wrap {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    aspect-ratio: 3 / 2;
    background-color: var(--color-surface-alt);
}

.story-card__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 500ms var(--ease-out);
}
.story-card:hover .story-card__image,
.story-card--horizontal:hover .story-card__image { transform: scale(1.05); }

.story-card__category {
    display: inline-block;
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: var(--space-sm);
    color: var(--color-accent);
}
.cat--tech    { color: var(--color-cat-tech); }
.cat--science { color: var(--color-cat-science); }
.cat--business{ color: var(--color-cat-business); }
.cat--culture { color: var(--color-cat-culture); }
.cat--news    { color: var(--color-cat-news); }

.story-card__title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    line-height: 1.3;
    letter-spacing: -0.015em;
    margin-bottom: var(--space-sm);
}
.story-card__title a:hover { color: var(--color-accent); }

.story-card__excerpt {
    font-size: 0.9375rem;
    color: var(--color-ink-muted);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.story-card__meta {
    margin-top: var(--space-sm);
    font-size: 0.8125rem;
    color: var(--color-ink-light);
}

.sidebar__section {
    margin-bottom: var(--space-2xl);
    padding-bottom: var(--space-2xl);
    border-bottom: 1px solid var(--color-border-light);
}
.sidebar__section:last-child { border-bottom: none; }

.sidebar__heading {
    font-family: var(--font-display);
    font-size: 1.15rem;
    letter-spacing: -0.01em;
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid var(--color-accent);
    display: inline-block;
}

.trending-list__item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    padding-block: var(--space-md);
    border-bottom: 1px solid var(--color-border-light);
}
.trending-list__item:last-child { border-bottom: none; }

.trending-list__rank {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-style: italic;
    color: var(--color-border);
    min-width: 2rem;
    line-height: 1;
    padding-top: 2px;
}

.trending-list__item a {
    font-size: 0.9375rem;
    font-weight: 500;
    line-height: 1.4;
}

.sidebar__newsletter {
    background: var(--color-surface-alt);
    padding: var(--space-xl);
    border-radius: var(--radius-md);
    border-bottom: none !important;
    overflow: hidden;
}
.sidebar__newsletter p {
    font-size: 0.9375rem;
    color: var(--color-ink-muted);
    margin-bottom: var(--space-md);
}

.newsletter-form {
    display: flex;
    gap: 0;
    align-items: stretch;
    border-radius: var(--radius-sm);
    overflow: hidden;
    border: 1px solid var(--color-border);
    background: var(--color-white);
    height: 44px;
}

.newsletter-form input[type="email"] {
    flex: 1;
    min-width: 0;
    padding: 0 var(--space-md);
    border: none;
    border-radius: 0;
    font-family: var(--font-body);
    font-size: 0.875rem;
    background: transparent;
    height: 100%;
}
.newsletter-form input[type="email"]:focus {
    outline: none;
}

.newsletter-form .btn {
    flex-shrink: 0;
    padding: 0 var(--space-lg);
    height: 100%;
    border: none;
    border-radius: 0;
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.01em;
    white-space: nowrap;
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-sm) var(--space-lg);
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.01em;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn--primary {
    background: var(--color-accent);
    color: var(--color-white);
    border: 1px solid var(--color-accent);
}
.btn--primary:hover {
    background: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
    color: var(--color-white);
}

.newsletter-form__note {
    margin-top: var(--space-sm);
    font-size: 0.75rem !important;
    color: var(--color-ink-light) !important;
}

.category-list li { margin-bottom: var(--space-sm); }
.category-list a {
    font-size: 0.9375rem;
    font-weight: 500;
    display: inline-block;
    padding-block: var(--space-xs);
}

.article-page {
    padding-block: var(--space-2xl) var(--space-4xl);
}

.article-header {
    max-width: 720px;
    margin-inline: auto;
    margin-bottom: var(--space-2xl);
}

.article-header__category {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: var(--space-md);
}

.article-header__title {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    line-height: 1.15;
    letter-spacing: -0.025em;
    margin-bottom: var(--space-lg);
}

.article-header__meta {
    font-size: 0.875rem;
    color: var(--color-ink-light);
    display: flex;
    gap: var(--space-lg);
    flex-wrap: wrap;
}

.article-hero-image {
    max-width: 900px;
    margin-inline: auto;
    margin-bottom: var(--space-2xl);
    border-radius: var(--radius-lg);
    overflow: hidden;
}
.article-hero-image img {
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 9;
    object-fit: cover;
}
.article-hero-image figcaption {
    padding: var(--space-sm) 0;
    font-size: 0.8125rem;
    color: var(--color-ink-light);
    text-align: center;
}

.article-body {
    max-width: 720px;
    margin-inline: auto;
}

.article-body p {
    font-size: 1.0625rem;
    line-height: 1.78;
    color: var(--color-ink);
    margin-bottom: var(--space-lg);
}

.article-body p:first-of-type::first-letter {
    font-family: var(--font-display);
    font-size: 3.5em;
    float: left;
    line-height: 0.8;
    padding-right: var(--space-sm);
    padding-top: 4px;
    color: var(--color-accent);
}

.article-body h2 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    margin-top: var(--space-2xl);
    margin-bottom: var(--space-md);
}

.article-body blockquote {
    border-left: 3px solid var(--color-accent);
    padding-left: var(--space-xl);
    margin-block: var(--space-xl);
    font-style: italic;
    color: var(--color-ink-muted);
}

.article-tags {
    margin-top: var(--space-2xl);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-border-light);
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.article-tags span {
    padding: var(--space-xs) var(--space-md);
    background: var(--color-surface-alt);
    border-radius: var(--radius-sm);
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--color-ink-muted);
}

.policy-page {
    padding-block: var(--space-2xl) var(--space-4xl);
}

.policy-content {
    max-width: 760px;
    margin-inline: auto;
}

.policy-content h1 {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 3.5vw, 2.4rem);
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-sm);
}

.policy-content .policy-updated {
    font-size: 0.875rem;
    color: var(--color-ink-light);
    margin-bottom: var(--space-2xl);
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid var(--color-border-light);
}

.policy-content h2 {
    font-family: var(--font-display);
    font-size: 1.4rem;
    margin-top: var(--space-2xl);
    margin-bottom: var(--space-md);
    letter-spacing: -0.01em;
}

.policy-content h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-top: var(--space-xl);
    margin-bottom: var(--space-sm);
}

.policy-content p {
    font-size: 1rem;
    line-height: 1.75;
    color: var(--color-ink);
    margin-bottom: var(--space-md);
}

.policy-content ul,
.policy-content ol {
    padding-left: var(--space-xl);
    margin-bottom: var(--space-md);
}
.policy-content li {
    list-style: disc;
    font-size: 1rem;
    line-height: 1.75;
    margin-bottom: var(--space-sm);
}
.policy-content ol li { list-style: decimal; }

.policy-content a { color: var(--color-accent); text-decoration: underline; }
.policy-content a:hover { color: var(--color-accent-hover); }

.site-footer {
    background-color: var(--color-ink);
    color: var(--color-white);
    padding-block: var(--space-3xl) var(--space-xl);
}

.site-footer__grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--space-3xl);
    padding-bottom: var(--space-2xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.site-footer__tagline {
    margin-top: var(--space-md);
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.55);
    line-height: 1.6;
    max-width: 30ch;
}

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

.site-footer__nav h4 {
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.4);
    margin-bottom: var(--space-md);
}

.site-footer__nav a {
    display: block;
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.7);
    padding-block: var(--space-xs);
}
.site-footer__nav a:hover { color: var(--color-white); }

.site-footer__bottom {
    padding-top: var(--space-xl);
    font-size: 0.8125rem;
    color: rgba(255, 255, 255, 0.4);
    line-height: 1.6;
}

.site-footer__disclosure {
    margin-top: var(--space-sm);
}
.site-footer__disclosure a { color: rgba(255, 255, 255, 0.55); text-decoration: underline; }
.site-footer__disclosure a:hover { color: var(--color-white); }

@media (max-width: 1024px) {
    .grid-layout {
        grid-template-columns: 1fr;
    }
    .sidebar {
        margin-top: var(--space-2xl);
        padding-top: var(--space-2xl);
        border-top: 2px solid var(--color-ink);
    }
    .site-footer__grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .site-nav__toggle { display: block; }

    .site-nav__menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--color-white);
        border-bottom: 1px solid var(--color-border);
        padding: var(--space-lg);
        gap: 0;
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    }
    .site-nav__menu.is-open { display: flex; }
    .site-nav__menu li { border-bottom: 1px solid var(--color-border-light); }
    .site-nav__menu li:last-child { border-bottom: none; }
    .site-nav__menu a { display: block; padding: var(--space-md) 0; }

    .site-header__inner { position: relative; }

    .story-card--horizontal {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }

    .hero-card__body {
        padding: var(--space-md) var(--space-lg) var(--space-lg);
    }

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

    .top-bar__links { gap: var(--space-md); }
}

@media (max-width: 480px) {
    .container { padding-inline: var(--space-md); }
    .newsletter-form { flex-direction: column; height: auto; }
    .newsletter-form input[type="email"] { height: 44px; }
    .newsletter-form .btn { height: 44px; }
    .hero-card__image-wrap { aspect-ratio: 3 / 2; }
}

@media print {
    .top-bar, .site-nav, .sidebar, .site-footer, .newsletter-form { display: none; }
    body { font-size: 12pt; color: #000; background: #fff; }
    a { color: #000; text-decoration: underline; }
}