:root {
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --size-small: 0.9rem;
  --size-xs: 0.8rem;
  --size-h1: clamp(1.9rem, 3.2vw, 2.6rem);
  --size-h2: clamp(1.4rem, 2.2vw, 1.75rem);
  --size-h3: 1.15rem;

  --radius-lg: 14px;
  --radius-md: 10px;
  --radius-sm: 6px;

  --color-bg: #f6f7f9;
  --color-surface: #ffffff;
  --color-border: #e2e6ec;
  --color-border-strong: #c5ccd6;
  --color-text: #111827;
  --color-subtext: #374151;
  --color-muted: #586170;
  --color-primary: #0b5d4b;
  --color-primary-dark: #073f33;
  --color-primary-soft: #e7f2ee;
  --color-ink: #0f1f2e;
  --color-ink-text: #d7dee7;

  --shadow-card: 0 1px 2px rgba(15, 31, 46, 0.05);
  --shadow-hover: 0 8px 24px rgba(15, 31, 46, 0.09);

  --page-width: 100%;
  --read-width: 100%;
  --page-gutter: 5%;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  background: var(--color-bg);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--color-text);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.015em;
  margin-top: 0;
}

h1 {
  font-size: var(--size-h1);
}

h2 {
  font-size: var(--size-h2);
}

h3 {
  font-size: var(--size-h3);
}

p,
li,
dd {
  color: var(--color-subtext);
}

a {
  color: var(--color-primary);
  text-decoration: none;
}

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

:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 3px;
}

img,
svg {
  max-width: 100%;
  height: auto;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 100;
  background: var(--color-ink);
  color: #ffffff;
  padding: 0.6rem 1rem;
  border-radius: var(--radius-sm);
}

.skip-link:focus {
  top: 1rem;
  color: #ffffff;
}

.site-container {
  flex: 1 0 auto;
  width: 100%;
  max-width: var(--page-width);
  margin: 0 auto;
  padding: clamp(1.5rem, 4vw, 3rem) var(--page-gutter) clamp(3rem, 6vw, 5rem);
}

/* ---------- Buttons ---------- */
.btn {
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-sm);
  padding: 0.7rem 1.4rem;
}

.btn-primary {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #ffffff;
}

.btn-primary:hover,
.btn-primary:focus-visible,
.btn-primary:active {
  background: var(--color-primary-dark) !important;
  border-color: var(--color-primary-dark) !important;
  color: #ffffff;
}

.btn-outline-primary {
  background: var(--color-surface);
  border-color: var(--color-border-strong);
  color: var(--color-text);
}

.btn-outline-primary:hover,
.btn-outline-primary:focus-visible,
.btn-outline-primary:active {
  background: var(--color-primary-soft) !important;
  border-color: var(--color-primary) !important;
  color: var(--color-primary-dark) !important;
}

/* ---------- Navigation ---------- */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--color-border);
}

.site-nav__inner {
  max-width: var(--page-width);
  margin: 0 auto;
  padding: 0.85rem var(--page-gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.site-brand {
  display: inline-flex;
  align-items: baseline;
  gap: 0.6rem;
  color: var(--color-text);
}

.site-brand:hover {
  color: var(--color-text);
}

.site-brand__name {
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}

.site-brand__tagline {
  font-size: var(--size-xs);
  color: var(--color-muted);
  padding-left: 0.6rem;
  border-left: 1px solid var(--color-border-strong);
}

.site-menu {
  gap: 0.25rem;
  align-items: center;
}

.site-menu__link {
  font-size: 0.93rem;
  font-weight: 500;
  color: var(--color-subtext);
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
}

.site-menu__link:hover {
  color: var(--color-text);
  background: var(--color-bg);
}

.site-menu__link.is-active {
  color: var(--color-primary-dark);
  background: var(--color-primary-soft);
  font-weight: 600;
}

.site-menu__toggle {
  width: 44px;
  height: 44px;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
}

.site-menu__drawer {
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}

.site-menu__drawer-list {
  max-width: var(--page-width);
  margin: 0 auto;
  padding: 0.75rem var(--page-gutter) 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.site-menu__drawer .site-menu__link {
  padding: 0.7rem 0.75rem;
  font-size: 1rem;
}

/* ---------- Home: hero ---------- */
.home-page {
  display: flex;
  flex-direction: column;
  gap: clamp(2.75rem, 6vw, 4.5rem);
}

.home-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: clamp(1.5rem, 5vw, 4rem);
  align-items: center;
  padding-top: clamp(0.5rem, 3vw, 2rem);
}

.home-hero__eyebrow {
  font-size: var(--size-small);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
}

.home-hero__headline {
  font-size: clamp(2.1rem, 4.6vw, 3.4rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
  max-width: 22ch;
  margin-bottom: 1.25rem;
}

.home-hero__lead {
  font-size: 1.1rem;
  line-height: 1.65;
  max-width: 52rem;
  margin-bottom: 1.75rem;
}

.home-hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* Portrait position inside the circle. The picture is zoomed a little so it can slide.
   --avatar-shift-x: more negative = picture moves left (range 0% to about -15%).
   --avatar-shift-y: more negative = picture moves up   (range 0% to about -15%). */
.home-hero__avatar {
  --avatar-zoom: 108%;
  --avatar-shift-x: -9%;
  --avatar-shift-y: -1%;
  width: 220px;
  height: 220px;
  overflow: hidden;
  border-radius: 50%;
  border: 4px solid var(--color-surface);
  box-shadow: 0 0 0 1px var(--color-border), var(--shadow-hover);
}

.home-hero__avatar img {
  display: block;
  width: var(--avatar-zoom);
  max-width: none;
  height: auto;
  transform: translate(var(--avatar-shift-x), var(--avatar-shift-y));
}

.proof-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: clamp(2rem, 5vw, 3.25rem) 0 0;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.proof-strip__item {
  padding: 1.25rem 1.4rem;
  border-left: 1px solid var(--color-border);
}

.proof-strip__item:first-child {
  border-left: 0;
}

.proof-strip__value {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.3;
}

.proof-strip__label {
  margin: 0.3rem 0 0;
  font-size: var(--size-small);
  line-height: 1.45;
  color: var(--color-muted);
}

/* ---------- Home: sections ---------- */
.section-heading {
  margin-bottom: 1.5rem;
}

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

.section-heading__title {
  font-size: var(--size-h2);
  margin-bottom: 0.3rem;
}

.section-heading__subtitle {
  max-width: 42rem;
  margin: 0;
  color: var(--color-muted);
}

.section-heading__more,
.path-card__links a,
.home-card__link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-weight: 600;
  font-size: 0.95rem;
}

.section-heading__more i,
.path-card__links a i,
.home-card__link i {
  font-size: 0.8em;
  transition: transform 0.15s ease;
}

.section-heading__more:hover i,
.path-card__links a:hover i {
  transform: translateX(3px);
}

.home-paths__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
}

.path-card,
.home-card,
.home-connect__inner {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.path-card {
  padding: clamp(1.4rem, 3vw, 2rem);
  border-top: 3px solid var(--color-primary);
}

.path-card__head {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin-bottom: 0.75rem;
}

.path-card__title {
  font-size: 1.3rem;
  margin: 0;
}

.path-card__intro {
  margin-bottom: 1rem;
}

.path-card__links {
  list-style: none;
  margin: 0;
  padding: 0;
}

.path-card__links li {
  border-top: 1px solid var(--color-border);
}

.path-card__links a {
  display: flex;
  justify-content: space-between;
  padding: 0.75rem 0;
  color: var(--color-text);
  font-weight: 500;
}

.path-card__links a:hover {
  color: var(--color-primary-dark);
}

.icon-square {
  flex: 0 0 auto;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: 1rem;
}

.home-card {
  position: relative;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.home-projects .home-card:hover,
.projects-card:hover {
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-hover);
}

.home-card__title {
  font-size: var(--size-h3);
  margin: 0;
}

.home-card__title a {
  color: inherit;
}

.home-card__title a:hover {
  color: var(--color-primary-dark);
}

.home-card__body {
  font-size: 0.95rem;
  margin: 0;
}

.home-card__tags,
.tag-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.home-card__tags {
  margin-top: 0.3rem;
}

.home-card__tags li,
.tag {
  display: inline-block;
  font-size: var(--size-xs);
  font-weight: 500;
  line-height: 1.3;
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  color: var(--color-subtext);
}

a.tag:hover,
.tag.is-active {
  background: var(--color-primary-soft);
  border-color: var(--color-primary);
  color: var(--color-primary-dark);
}

.tag__count {
  color: var(--color-muted);
  margin-left: 0.15rem;
}

.tag-list--filter {
  margin-top: 1.25rem;
}

.tag-list--filter .tag {
  font-size: var(--size-small);
  padding: 0.35rem 0.8rem;
}

.home-connect__inner {
  padding: clamp(1.5rem, 4vw, 2.5rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.home-connect__title {
  font-size: var(--size-h2);
  margin-bottom: 0.4rem;
}

.home-connect__subtitle {
  max-width: 36rem;
  margin-bottom: 0.9rem;
}

.home-connect__email {
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  overflow-wrap: anywhere;
}

.home-connect__socials,
.site-footer__socials {
  display: flex;
  gap: 0.6rem;
}

.home-connect__social,
.site-footer__social {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.home-connect__social {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  color: var(--color-text);
}

.home-connect__social:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #ffffff;
}

/* ---------- Post rows (home, writing list, related) ---------- */
.post-list {
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.post-row {
  padding: 1.3rem 1.5rem;
  border-top: 1px solid var(--color-border);
}

.post-row:first-child {
  border-top: 0;
}

.post-row__meta,
.page-article__meta {
  font-size: var(--size-small);
  color: var(--color-muted);
  margin: 0 0 0.3rem;
}

.post-row__title {
  font-size: 1.2rem;
  margin: 0 0 0.35rem;
}

.post-row__title a {
  color: var(--color-text);
}

.post-row__title a:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

.post-row__excerpt {
  font-size: 0.95rem;
  margin: 0 0 0.7rem;
  max-width: 48rem;
}

/* ---------- Page layouts ---------- */
.page-article,
.page-collection {
  width: 100%;
  max-width: var(--read-width);
  margin: 0 auto;
}

.projects-page .page-article,
.threat-actor-page .site-container {
  max-width: var(--page-width);
}

.page-article__header,
.page-collection__header {
  margin-bottom: 2rem;
}

.page-article__back {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: var(--size-small);
  font-weight: 600;
  margin-bottom: 1rem;
}

.page-article__title,
.page-collection__title {
  font-size: var(--size-h1);
  letter-spacing: -0.025em;
  line-height: 1.15;
  margin-bottom: 0.75rem;
}

.page-article__meta {
  margin-bottom: 0.8rem;
}

.page-article__meta a,
.page-collection__intro a {
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

.page-collection__intro,
.projects-page__lead {
  font-size: 1.05rem;
  max-width: 44rem;
  margin: 0;
  color: var(--color-subtext);
}

.toc {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.9rem 1.2rem;
  margin-bottom: 2rem;
  font-size: 0.95rem;
}

.toc summary {
  font-weight: 600;
  cursor: pointer;
}

.toc nav {
  margin-top: 0.75rem;
}

.toc ul {
  margin: 0;
  padding-left: 1.1rem;
}

.toc li {
  margin: 0.25rem 0;
}

.content {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: clamp(1.25rem, 4vw, 2.75rem);
  font-size: 1.02rem;
  line-height: 1.75;
  overflow-wrap: break-word;
}

.content> :first-child {
  margin-top: 0;
}

.content> :last-child {
  margin-bottom: 0;
}

.content h1,
.content h2 {
  font-size: 1.6rem;
  margin: 2.4rem 0 0.9rem;
}

.content h3 {
  font-size: 1.3rem;
  margin: 2rem 0 0.75rem;
}

.content h4,
.content h5,
.content h6 {
  font-size: 1.1rem;
  margin: 1.75rem 0 0.6rem;
}

.content a {
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

.content hr {
  border: 0;
  border-top: 1px solid var(--color-border);
  margin: 2rem 0;
  opacity: 1;
}

.content img {
  display: block;
  margin: 1.5rem auto;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

.content .image-zoom {
  display: block;
  cursor: zoom-in;
}

.table-scroll {
  overflow-x: auto;
  margin: 1.5rem 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.content table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.93rem;
  margin: 0;
}

.content table th,
.content table td {
  padding: 0.65rem 0.85rem;
  border-bottom: 1px solid var(--color-border);
  border-right: 1px solid var(--color-border);
  text-align: left;
  vertical-align: top;
}

.content table th {
  background: var(--color-bg);
  font-weight: 600;
  color: var(--color-text);
}

.content table tr:last-child td {
  border-bottom: 0;
}

.content table th:last-child,
.content table td:last-child {
  border-right: 0;
}

.content code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  color: var(--color-primary-dark);
  background: var(--color-primary-soft);
  padding: 0.12em 0.35em;
  border-radius: 4px;
}

.content pre {
  margin: 1.5rem 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  overflow-x: auto;
  font-size: 0.88rem;
  line-height: 1.6;
}

.content pre code {
  display: block;
  padding: 1rem 1.15rem;
  background: transparent;
  color: var(--color-text);
  font-size: inherit;
  border-radius: 0;
}

.content blockquote {
  margin: 1.5rem 0;
  padding: 0.75rem 1.15rem;
  border-left: 4px solid var(--color-primary);
  background: var(--color-primary-soft);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.content blockquote p {
  color: var(--color-text);
}

.content blockquote> :last-child {
  margin-bottom: 0;
}

.author-box {
  display: flex;
  gap: 1.1rem;
  align-items: flex-start;
  margin-top: 2rem;
  padding: 1.4rem 1.5rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.author-box__avatar {
  flex: 0 0 auto;
  width: 72px;
  height: 72px;
  border-radius: 50%;
}

.author-box__name {
  font-weight: 700;
  color: var(--color-text);
  margin: 0 0 0.2rem;
}

.author-box__bio {
  font-size: 0.95rem;
  margin: 0 0 0.5rem;
}

.author-box__links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.1rem;
  font-size: var(--size-small);
  font-weight: 600;
  margin: 0;
}

.related-posts {
  margin-top: 2.5rem;
}

.related-posts__title {
  font-size: 1.3rem;
  margin-bottom: 1rem;
}

.error-page {
  text-align: center;
  padding: clamp(2rem, 8vw, 5rem) 0;
}

.error-page__code {
  font-size: 4rem;
  font-weight: 700;
  line-height: 1;
  color: var(--color-border-strong);
  margin-bottom: 0.5rem;
}

/* ---------- Projects and threat intel card pages ---------- */
.projects-section {
  margin-top: 2.5rem;
}

.projects-section__heading {
  margin-bottom: 1.1rem;
}

.projects-section__heading .section-heading__title {
  font-size: 1.3rem;
}

.projects-page .content {
  margin-bottom: 1rem;
}

.projects-card__links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.2rem;
  margin-top: auto;
  padding-top: 0.5rem;
}

/* ---------- Footer ---------- */
.site-footer {
  flex-shrink: 0;
  background: var(--color-ink);
  color: var(--color-ink-text);
  padding: clamp(2rem, 5vw, 3rem) var(--page-gutter) 1.5rem;
}

.site-footer__inner {
  max-width: var(--page-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) auto;
  gap: 2rem;
  align-items: start;
}

.site-footer__brand {
  font-weight: 700;
  font-size: 1.1rem;
  color: #ffffff;
}

.site-footer__tagline {
  color: var(--color-ink-text);
  font-size: var(--size-small);
  max-width: 26rem;
  margin: 0.4rem 0 0.6rem;
}

.site-footer a {
  color: var(--color-ink-text);
}

.site-footer a:hover {
  color: #ffffff;
  text-decoration: underline;
}

.site-footer :focus-visible {
  outline-color: #ffffff;
}

.site-footer__email {
  font-size: var(--size-small);
  overflow-wrap: anywhere;
}

.site-footer__nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.45rem 1.5rem;
  font-size: var(--size-small);
}

.site-footer__social {
  border: 1px solid rgba(255, 255, 255, 0.25);
}

.site-footer__social:hover {
  background: #ffffff;
  color: var(--color-ink) !important;
}

.site-footer__copy {
  max-width: var(--page-width);
  margin: 2rem auto 0;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  font-size: var(--size-xs);
  color: #aab5c3;
}

/* ---------- Responsive ---------- */
@media (max-width: 991.98px) {
  .proof-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .proof-strip__item:nth-child(odd) {
    border-left: 0;
  }

  .proof-strip__item:nth-child(n + 3) {
    border-top: 1px solid var(--color-border);
  }

  .site-footer__inner {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 767.98px) {
  body {
    font-size: 16px;
  }

  .home-hero__grid {
    grid-template-columns: 1fr;
  }

  .home-hero__portrait {
    order: -1;
  }

  .home-hero__avatar {
    width: 120px;
    height: 120px;
  }

  .home-paths__grid {
    grid-template-columns: 1fr;
  }

  .site-brand__tagline {
    display: none;
  }

  .site-footer__inner {
    grid-template-columns: 1fr;
  }

  .author-box {
    flex-direction: column;
  }
}

@media (max-width: 479.98px) {
  .proof-strip {
    grid-template-columns: 1fr;
  }

  .proof-strip__item {
    border-left: 0;
    border-top: 1px solid var(--color-border);
  }

  .proof-strip__item:first-child {
    border-top: 0;
  }

  .home-hero__cta .btn {
    width: 100%;
  }
}

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

  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }
}

@media print {

  .site-nav,
  .site-footer,
  .author-box,
  .related-posts,
  .toc {
    display: none;
  }

  .content {
    border: 0;
    box-shadow: none;
    padding: 0;
  }
}