:root {
    --bg: #f5f8fc;
    --surface: #ffffff;
    --surface-strong: #edf4fb;
    --ink: #172033;
    --muted: #607086;
    --line: #d7e1ec;
    --accent: #1f66b1;
    --accent-2: #2f7a9f;
    --accent-3: #134e8a;
    --shadow: 0 18px 50px rgba(23, 32, 51, 0.09);
    --radius: 6px;
    --max: 1120px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background:
        linear-gradient(90deg, rgba(31, 89, 145, 0.045) 1px, transparent 1px),
        linear-gradient(180deg, rgba(31, 89, 145, 0.035) 1px, transparent 1px),
        var(--bg);
    background-size: 56px 56px;
    color: var(--ink);
    font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 16px;
    line-height: 1.65;
    letter-spacing: 0;
}

a {
    color: inherit;
    text-decoration-color: rgba(31, 102, 177, 0.42);
    text-underline-offset: 0.18em;
    transition: color 180ms ease, border-color 180ms ease, background 180ms ease, transform 180ms ease;
}

a:hover {
    color: var(--accent);
}

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

code {
    border: 1px solid var(--line);
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.7);
    padding: 0.05rem 0.3rem;
    font-size: 0.9em;
}

.skip-link {
    position: absolute;
    left: 1rem;
    top: 1rem;
    z-index: 100;
    transform: translateY(-160%);
    background: var(--ink);
    color: #fff;
    padding: 0.6rem 0.85rem;
    border-radius: 4px;
}

.skip-link:focus {
    transform: translateY(0);
}

.site-frame {
    width: min(100% - 32px, var(--max));
    margin: 0 auto;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    min-height: 76px;
    margin: 0 auto;
    border-bottom: 1px solid rgba(215, 225, 236, 0.92);
    background: rgba(245, 248, 252, 0.88);
    backdrop-filter: blur(18px);
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 0.65rem;
    text-decoration: none;
}

.brand-avatar,
.footer-avatar {
    width: 42px;
    height: 42px;
    border: 1px solid rgba(23, 32, 51, 0.14);
    border-radius: 50%;
    object-fit: cover;
}

.brand strong,
.footer-brand strong {
    display: block;
    font-weight: 800;
    line-height: 1.15;
}

.brand small,
.footer-brand span {
    display: block;
    color: var(--muted);
    font-size: 0.78rem;
    line-height: 1.25;
}

.site-nav .menu {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.site-nav a {
    display: block;
    border-radius: 999px;
    padding: 0.45rem 0.72rem;
    color: var(--muted);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0;
    text-decoration: none;
}

.site-nav a:hover,
.site-nav .current-menu-item > a {
    background: var(--surface);
    color: var(--ink);
    box-shadow: 0 8px 22px rgba(23, 32, 51, 0.06);
}

.site-main {
    min-height: 66vh;
}

.hero-section {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: clamp(1.25rem, 4vw, 4rem);
    align-items: center;
    padding: clamp(2.4rem, 5.5vw, 4.6rem) 0 2.2rem;
}

.hero-copy h1,
.page-hero h1,
.article-header h1 {
    margin: 0;
    color: var(--ink);
    font-family: "Noto Serif SC", Inter, sans-serif;
    font-size: clamp(2.25rem, 7vw, 5.2rem);
    line-height: 1.02;
    letter-spacing: 0;
}

.hero-copy h1 span {
    display: block;
    color: var(--accent);
    font-size: 0.42em;
    line-height: 1.25;
    margin-top: 0.35rem;
}

.eyebrow {
    margin: 0 0 0.55rem;
    color: var(--accent-2);
    font-size: 0.76rem;
    font-weight: 800;
    letter-spacing: 0;
    text-transform: uppercase;
}

.hero-role {
    margin: 1.35rem 0 0;
    color: var(--accent-3);
    font-size: clamp(1.05rem, 2vw, 1.35rem);
    font-weight: 800;
}

.hero-intro,
.page-hero p,
.article-header p {
    max-width: 760px;
    margin: 1rem 0 0;
    color: var(--muted);
    font-size: 1.06rem;
}

.keyword-row,
.social-row,
.pill-row,
.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem;
    align-items: center;
}

.keyword-row {
    margin-top: 1.35rem;
}

.keyword-row span {
    border: 1px solid var(--line);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.68);
    padding: 0.38rem 0.65rem;
    color: #24364c;
    font-size: 0.82rem;
    font-weight: 700;
}

.social-row {
    margin-top: 1.5rem;
}

.social-row a,
.pill-link,
.text-link {
    display: inline-flex;
    align-items: center;
    min-height: 34px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: var(--surface);
    padding: 0.4rem 0.78rem;
    color: var(--ink);
    font-size: 0.84rem;
    font-weight: 800;
    text-decoration: none;
}

.social-row a:hover,
.pill-link:hover,
.text-link:hover {
    border-color: rgba(31, 102, 177, 0.35);
    background: #edf4fb;
    transform: translateY(-1px);
}

.profile-panel {
    position: relative;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface);
    box-shadow: var(--shadow);
    padding: 1rem;
    overflow: hidden;
}

.profile-panel::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        linear-gradient(135deg, rgba(31, 102, 177, 0.12), transparent 38%),
        linear-gradient(315deg, rgba(47, 122, 159, 0.1), transparent 42%);
    pointer-events: none;
}

.profile-image {
    position: relative;
    width: 100%;
    aspect-ratio: 1 / 1;
    border-radius: var(--radius);
    object-fit: cover;
}

.profile-meta {
    position: relative;
    display: grid;
    gap: 0.5rem;
    margin-top: 1rem;
}

.profile-meta span,
.profile-meta a {
    display: block;
    color: var(--muted);
    font-size: 0.92rem;
}

.content-section,
.page-hero,
.article-shell {
    padding: clamp(1.55rem, 3.6vw, 2.8rem) 0;
}

.content-section + .content-section {
    border-top: 1px solid var(--line);
}

.section-heading {
    margin-bottom: 1.1rem;
}

.section-heading.with-link {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 1rem;
}

.section-heading h2,
.cv-block h2 {
    margin: 0;
    font-size: clamp(1.45rem, 3vw, 2.2rem);
    line-height: 1.15;
    letter-spacing: 0;
}

.news-list,
.stack-list,
.post-list {
    display: grid;
    gap: 0.7rem;
}

.news-item {
    display: grid;
    grid-template-columns: 128px minmax(0, 1fr);
    gap: 1rem;
    align-items: baseline;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.72);
    padding: 0.78rem 1rem;
    text-decoration: none;
}

.news-item:hover {
    background: var(--surface);
    transform: translateX(3px);
}

.news-item time,
.post-card time,
.post-list-item time,
.article-header time,
.timeline-item time {
    color: var(--accent-2);
    font-size: 0.94rem;
    font-weight: 800;
}

.news-item time {
    color: #1689ff;
}

.publication-card {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(180px, 30%);
    gap: 1.25rem;
    align-items: center;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface);
    padding: clamp(1rem, 2vw, 1.35rem);
    box-shadow: 0 10px 34px rgba(23, 32, 51, 0.05);
    transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.publication-card:hover,
.project-card:hover,
.post-card:hover,
.post-list-item:hover {
    border-color: rgba(31, 102, 177, 0.34);
    box-shadow: var(--shadow);
    transform: translateY(-3px);
}

.publication-copy h2,
.publication-copy h3,
.project-card h2,
.project-card h3,
.post-card h3,
.post-list-item h2 {
    margin: 0;
    font-size: clamp(1.08rem, 2vw, 1.45rem);
    line-height: 1.25;
    letter-spacing: 0;
}

.publication-copy p,
.project-card p,
.post-card p,
.post-list-item p {
    margin: 0.55rem 0 0;
    color: var(--muted);
}

.publication-meta strong,
.publication-author-highlight {
    color: var(--ink);
    font-weight: 800;
}

.publication-meta span {
    color: var(--muted);
}

.publication-note {
    margin: 1rem 0 0;
    color: var(--muted);
    font-size: 0.88rem;
}

.publication-image {
    width: 100%;
    aspect-ratio: 4 / 3;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface-strong);
    object-fit: cover;
}

.pill-row {
    margin-top: 0.9rem;
}

.post-grid,
.project-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.9rem;
}

.project-grid.large {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.post-card,
.post-list-item,
.project-card,
.cv-block {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface);
    padding: 1rem;
    transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.post-card h3 a,
.post-list-item h2 a {
    text-decoration: none;
}

.project-card img {
    width: 100%;
    aspect-ratio: 16 / 10;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface-strong);
    object-fit: cover;
    margin-bottom: 0.9rem;
}

.page-hero.compact {
    max-width: 830px;
    padding-bottom: 2rem;
}

.page-hero.compact h1 {
    font-size: clamp(2rem, 6vw, 4rem);
}

.article-shell {
    max-width: 820px;
    margin: 0 auto;
}

.article-header {
    margin-bottom: 1.8rem;
}

.article-header h1 {
    margin-top: 0.4rem;
    font-size: clamp(2rem, 6vw, 4.2rem);
}

.article-cover img {
    width: 100%;
    border-radius: var(--radius);
    border: 1px solid var(--line);
}

.article-content {
    color: #253247;
    font-size: 1.04rem;
}

.article-content h2,
.article-content h3 {
    margin-top: 2rem;
    line-height: 1.2;
}

.article-content p,
.article-content ul,
.article-content ol,
.article-content blockquote {
    margin: 1rem 0;
}

.article-content blockquote {
    border-left: 4px solid var(--accent);
    background: rgba(255, 255, 255, 0.72);
    padding: 0.8rem 1rem;
    color: var(--muted);
}

.article-content pre {
    overflow: auto;
    border-radius: var(--radius);
    background: #172033;
    color: #fff;
    padding: 1rem;
}

.cv-layout {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

.cv-block:last-child {
    grid-column: 1 / -1;
}

.timeline-item {
    display: grid;
    grid-template-columns: 126px minmax(0, 1fr);
    gap: 1rem;
    border-top: 1px solid var(--line);
    margin-top: 1rem;
    padding-top: 1rem;
}

.timeline-item strong,
.timeline-item span {
    display: block;
}

.timeline-item span {
    color: var(--muted);
}

.clean-list {
    margin: 1rem 0 0;
    padding-left: 1.1rem;
}

.pagination-nav,
.nav-links {
    margin-top: 1.4rem;
}

.nav-links {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.page-numbers {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    min-height: 36px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: var(--surface);
    padding: 0 0.65rem;
    text-decoration: none;
}

.page-numbers.current {
    background: var(--ink);
    color: #fff;
}

.site-footer {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 1rem;
    align-items: center;
    border-top: 1px solid var(--line);
    padding: 2rem 0 2.4rem;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.footer-links {
    justify-content: end;
}

.footer-links a {
    color: var(--muted);
    font-size: 0.84rem;
    font-weight: 700;
    text-decoration: none;
}

.copyright {
    grid-column: 1 / -1;
    margin: 0;
    color: var(--muted);
    font-size: 0.82rem;
}

.reveal {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 620ms ease, transform 620ms ease;
    transition-delay: var(--delay, 0ms);
}

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

[data-animate="down"] {
    animation: headerIn 520ms ease both;
}

@keyframes headerIn {
    from {
        opacity: 0;
        transform: translateY(-12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
    }

    .reveal {
        opacity: 1;
        transform: none;
    }
}

@media (max-width: 900px) {
    .site-header {
        position: static;
        align-items: flex-start;
        flex-direction: column;
        padding: 1rem 0;
    }

    .site-nav {
        width: 100%;
        overflow-x: auto;
        padding-bottom: 0.15rem;
    }

    .site-nav .menu {
        width: max-content;
    }

    .hero-section,
    .publication-card,
    .cv-layout,
    .site-footer {
        grid-template-columns: 1fr;
    }

    .profile-panel {
        max-width: 420px;
    }

    .post-grid,
    .project-grid,
    .project-grid.large {
        grid-template-columns: 1fr;
    }

    .footer-links {
        justify-content: flex-start;
    }
}

@media (max-width: 560px) {
    .site-frame {
        width: min(100% - 22px, var(--max));
    }

    .brand span {
        max-width: 210px;
    }

    .news-item,
    .timeline-item {
        grid-template-columns: 1fr;
        gap: 0.35rem;
    }

    .section-heading.with-link {
        align-items: flex-start;
        flex-direction: column;
    }

    .hero-copy h1 {
        font-size: 2.6rem;
    }
}