@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Source+Serif+4:ital,wght@0,400;0,600;1,400&display=swap');

:root {
  --color-bg: #FAFAF8;
  --color-bg-secondary: #F0EFEC;
  --color-text: #1A1A1A;
  --color-text-secondary: #5C5C5C;
  --color-text-tertiary: #8A8A8A;
  --color-accent: #2A7B6F;
  --color-accent-hover: #1F5F55;
  --color-border: rgba(0, 0, 0, 0.08);
  --color-border-strong: rgba(0, 0, 0, 0.15);
  --color-tag-bg: #E8F5F2;
  --color-tag-text: #1B5E54;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Source Serif 4', Georgia, serif;
  --max-width: 1000px;
  --max-width-wide: 1300px;
}

[data-theme="dark"] {
  --color-bg: #0A0A0A;
  --color-bg-secondary: #141414;
  --color-text: #EAEAEA;
  --color-text-secondary: #A0A0A0;
  --color-text-tertiary: #6A6A6A;
  --color-accent: #3EBEAB;
  --color-accent-hover: #5CD4C2;
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-strong: rgba(255, 255, 255, 0.15);
  --color-tag-bg: rgba(62, 190, 171, 0.12);
  --color-tag-text: #3EBEAB;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  transition: background 0.3s ease, color 0.3s ease;
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2rem, 5vw, 3rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); margin-bottom: 1rem; }
h3 { font-size: 1.25rem; margin-bottom: 0.75rem; }

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.2s ease;
}
a:hover { color: var(--color-accent-hover); }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.container--wide {
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-bg);
  border-top: 2px solid var(--color-accent);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(12px);
  background: rgba(250, 250, 248, 0.85);
  transition: box-shadow 0.3s ease, background 0.3s ease;
}
[data-theme="dark"] .site-header {
  background: rgba(10, 10, 10, 0.85);
}
.site-header.scrolled {
  background: rgba(250, 250, 248, 0.95);
  box-shadow: 0 1px 12px rgba(0, 0, 0, 0.08);
}
[data-theme="dark"] .site-header.scrolled {
  background: rgba(10, 10, 10, 0.95);
}

.site-header__inner {
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: 0.875rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.site-header__name {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
}
.site-header__name:hover { color: var(--color-accent); }

.site-header__nav {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.site-header__link {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color 0.2s;
}
.site-header__link:hover,
.site-header__link--active { color: var(--color-text); }

.theme-toggle {
  background: none;
  border: 1px solid var(--color-border-strong);
  border-radius: 6px;
  padding: 6px 8px;
  cursor: pointer;
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  transition: all 0.2s;
  line-height: 1;
}
.theme-toggle:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* Full-bleed bands (background spans viewport, content stays in .container) */
.band {
  padding: 3rem 0;
}
.band--alt {
  background: var(--color-bg-secondary);
}
.band--feature {
  background: var(--color-bg-secondary);
  padding: 1.75rem 0;
}
.band--hero {
  padding: 3rem 0 3rem;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(62, 190, 171, 0.08), transparent 70%),
    linear-gradient(180deg, var(--color-bg-secondary) 0%, var(--color-bg) 100%);
}
.band--hero-flush {
  padding-bottom: 0;
}
.band--tight {
  padding-top: 1.5rem;
}

/* Hero */
.hero {
  padding: 4rem 0 2.5rem;
}

.hero__eyebrow {
  font-size: 0.875rem;
  color: var(--color-accent);
  font-weight: 500;
  margin-bottom: 1rem;
  letter-spacing: 0.03em;
}

.hero__title {
  font-size: clamp(2.25rem, 5.5vw, 3.5rem);
  margin-bottom: 0.75rem;
}

.hero__title em {
  font-style: normal;
  color: var(--color-accent);
  background: linear-gradient(135deg, #2A7B6F, #3EBEAB);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero__subtitle {
  font-size: 1.1875rem;
  color: var(--color-text-secondary);
  max-width: 640px;
  line-height: 1.7;
  margin-bottom: 1rem;
}

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  font-size: 0.875rem;
  color: var(--color-text-tertiary);
}

.hero__meta-item {
  display: flex;
  align-items: center;
  gap: 0.375rem;
}

/* Sections */
.section {
  padding: 3rem 0;
  border-top: 1px solid var(--color-border);
}

.section__label {
  font-size: 0.9375rem;
  color: var(--color-accent);
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.section__title {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  margin-bottom: 2rem;
}

/* Case study cards */
.work-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.work-card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 2rem;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  text-decoration: none;
  color: inherit;
  display: block;
}
.work-card:hover {
  border-color: var(--color-accent);
  transform: scale(1.02);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
  color: inherit;
}

.work-card__sector {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 500;
  background: var(--color-tag-bg);
  color: var(--color-tag-text);
  padding: 3px 10px;
  border-radius: 4px;
  margin-bottom: 0.75rem;
  transition: background 0.3s cubic-bezier(0.4, 0, 0.2, 1), color 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.work-card:hover .work-card__sector {
  background: var(--color-accent);
  color: #fff;
}

.work-card__title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.work-card__desc {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  margin-bottom: 1rem;
}

.work-card__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  font-size: 0.8125rem;
  color: var(--color-text-tertiary);
}

.work-card__stat strong {
  display: block;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text);
  font-family: var(--font-display);
}

/* Tech tags */
.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
}

.tech-tag {
  font-size: 0.75rem;
  color: var(--color-text-tertiary);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  padding: 2px 8px;
  border-radius: 4px;
}

/* Credentials grid */
.cred-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.cred-item {
  padding: 1.75rem;
  background: var(--color-bg-secondary);
  border-radius: 10px;
}

.cred-item__label {
  font-size: 0.75rem;
  color: var(--color-text-tertiary);
  margin-bottom: 0.25rem;
}

.cred-item__value {
  font-size: 0.9375rem;
  font-weight: 500;
}

/* Blog list */
.blog-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.blog-item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 1rem 0;
  border-bottom: 1px solid var(--color-border);
  text-decoration: none;
  color: inherit;
  transition: color 0.2s;
}
.blog-item:hover { color: var(--color-accent); }

.blog-item__title {
  font-weight: 500;
  font-size: 1rem;
}

.blog-item__date {
  font-size: 0.8125rem;
  color: var(--color-text-tertiary);
  white-space: nowrap;
  margin-left: 1rem;
}

/* Case study page */
.case-study__header {
  padding: 2.5rem 0 2rem;
}

.case-study__back {
  font-size: 0.875rem;
  color: var(--color-text-tertiary);
  margin-bottom: 2rem;
  display: inline-block;
}

.case-study__content {
  padding: 2rem 0 4rem;
}

.case-study__content h2 {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
}

.case-study__content h2:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: none;
}

.case-study__content p {
  margin-bottom: 1rem;
  color: var(--color-text-secondary);
}

.case-study__content ul, .case-study__content ol {
  margin-bottom: 1rem;
  padding-left: 1.25rem;
  color: var(--color-text-secondary);
}

.case-study__content li {
  margin-bottom: 0.5rem;
}

.case-study__content strong {
  color: var(--color-text);
  font-weight: 500;
}

/* Impact metrics */
.impact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1rem;
  margin: 2rem 0;
}

.impact-metric {
  text-align: center;
  padding: 1.25rem;
  background: var(--color-bg-secondary);
  border-radius: 8px;
}

.impact-metric__number {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-accent);
}

.impact-metric__label {
  font-size: 0.75rem;
  color: var(--color-text-tertiary);
  margin-top: 0.25rem;
}

/* Footer */
.site-footer {
  position: relative;
  padding: 4rem 0 3rem;
  font-size: 0.8125rem;
  color: var(--color-text-tertiary);
}
.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
  opacity: 0.5;
}

.site-footer__inner {
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.site-footer__brand {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
}

.site-footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.site-footer__links {
  display: flex;
  gap: 1.5rem;
}

.site-footer__links a {
  color: var(--color-text-tertiary);
  transition: color 0.2s;
}
.site-footer__links a:hover { color: var(--color-accent); }

/* Contact */
.contact-links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1rem;
  padding: 1rem 1.25rem;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  transition: border-color 0.2s;
}
.contact-link:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.contact-link__label {
  font-size: 0.75rem;
  color: var(--color-text-tertiary);
}

/* Hero photo */
.hero__header {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.hero__photo {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  box-shadow: 0 0 0 4px var(--color-bg), 0 0 0 6px var(--color-accent);
}

.hero__header .hero__title {
  margin-bottom: 0;
}

/* About photo */
.about-photo {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--color-border-strong);
  margin-bottom: 1.5rem;
  display: block;
}

/* Recognition bar */
.recognition-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 2rem;
}

.recognition-bar__label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-tertiary);
  font-weight: 500;
}

.recognition-bar__items {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1.75rem;
}

.recognition-bar__item {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text-secondary);
}

/* View all link */
.view-all {
  margin-top: 2rem;
}

.view-all a {
  font-size: 0.9375rem;
  font-weight: 500;
}

/* Writing list (combined local + external) */
.blog-item__titlewrap {
  display: flex;
  align-items: baseline;
  gap: 0.625rem;
  flex-wrap: wrap;
}

.blog-badge {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  background: var(--color-tag-bg);
  color: var(--color-tag-text);
  padding: 2px 7px;
  border-radius: 4px;
  white-space: nowrap;
}

/* Click-to-reveal email */
.email-reveal {
  font-family: var(--font-body);
  font-size: 1rem;
  text-align: left;
  width: 100%;
  background: none;
  color: inherit;
  cursor: pointer;
}

.email-reveal:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* Published writing list on About */
.about-writing {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  margin: 0.5rem 0 1rem;
  padding-left: 0;
  list-style: none;
}

.about-writing li {
  margin-bottom: 0;
}

/* Section number / rhythm */
.section__num {
  color: var(--color-text-tertiary);
  font-weight: 600;
  margin-right: 0.5rem;
  font-variant-numeric: tabular-nums;
}

/* Hero accent line */
.hero__accent {
  width: 120px;
  height: 4px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--color-accent), transparent);
  margin: 0 0 1.5rem;
}

/* "Now" status bar */
.now-bar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem 0.75rem;
  margin-top: 1.75rem;
  padding: 1rem 1.25rem;
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: 10px;
}
.now-bar__tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
}
.now-bar__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  animation: now-pulse 2.4s infinite;
}
@keyframes now-pulse {
  0% { box-shadow: 0 0 0 0 rgba(62, 190, 171, 0.45); }
  70% { box-shadow: 0 0 0 8px rgba(62, 190, 171, 0); }
  100% { box-shadow: 0 0 0 0 rgba(62, 190, 171, 0); }
}

/* Recognition bar links */
.recognition-bar__item a { color: inherit; }
.recognition-bar__item a:hover { color: var(--color-accent); }

/* About hero: photo + stats */
.about-hero {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  flex-wrap: wrap;
  margin: 1rem 0 2rem;
}
.about-hero .about-photo { margin-bottom: 0; }

.hero-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.875rem;
  flex: 1;
  min-width: 280px;
}
.hero-stat {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-accent);
  border-radius: 10px;
  padding: 1.1rem 1.25rem;
}
.hero-stat__value {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.1;
}
.hero-stat__label {
  font-size: 0.75rem;
  color: var(--color-text-tertiary);
  margin-top: 0.35rem;
}

/* Certifications grid (3 columns on desktop) */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
}
.cert-group {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-accent);
  border-radius: 12px;
  padding: 1.5rem;
}
.cert-group__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 1rem;
}
.cert-group__provider {
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 600;
  margin: 0;
}
.cert-group__note {
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-tag-text);
  background: var(--color-tag-bg);
  padding: 2px 7px;
  border-radius: 4px;
}
.cert-group__list { list-style: none; margin: 0; padding: 0; }
.cert-item {
  padding: 0.6rem 0;
  border-top: 1px solid var(--color-border);
}
.cert-item:first-child { border-top: none; padding-top: 0; }
.cert-item__name {
  display: block;
  font-size: 0.9375rem;
  color: var(--color-text);
}
.cert-item__date {
  display: block;
  font-size: 0.75rem;
  color: var(--color-text-tertiary);
  margin-top: 0.1rem;
}

/* Competitions list */
.comp-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
}
.comp-item {
  display: flex;
  align-items: baseline;
  gap: 1.25rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--color-border);
}
.comp-item__rank {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  color: var(--color-accent);
  min-width: 72px;
  font-variant-numeric: tabular-nums;
}
.comp-item__title {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
}
.comp-item__repo {
  font-size: 0.75rem;
  margin-left: 0.5rem;
  border: 1px solid var(--color-border);
  padding: 1px 7px;
  border-radius: 4px;
}
.comp-profile {
  margin-top: 1.25rem;
  font-size: 0.9375rem;
}

/* Leadership list */
.lead-list {
  list-style: none;
  margin: 0.5rem 0 1rem;
  padding: 0;
}
.lead-list li {
  position: relative;
  padding: 0 0 0.85rem 1.25rem;
  color: var(--color-text-secondary);
}
.lead-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
}

/* Hero actions / CV download */
.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}
.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9375rem;
  font-weight: 500;
  padding: 0.65rem 1.15rem;
  border: 1px solid var(--color-border-strong);
  border-radius: 8px;
  color: var(--color-text);
  transition: border-color 0.2s, color 0.2s;
}
.btn-download:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* Grouped skill tags */
.skill-groups {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}
.skill-group__title {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 600;
  margin-bottom: 0.85rem;
}
.skill-group__note {
  font-size: 0.75rem;
  font-weight: 400;
  font-family: var(--font-body);
  color: var(--color-text-tertiary);
  letter-spacing: 0.01em;
}
.skill-group__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}
.tech-tag--lg {
  font-size: 0.875rem;
  padding: 6px 14px;
}

/* Career timeline */
.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
}
.timeline__item {
  display: grid;
  grid-template-columns: 4.5rem 1fr;
  gap: 1.25rem;
}
.timeline__year {
  text-align: right;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--color-accent);
  padding-top: 0.1rem;
}
.timeline__body {
  position: relative;
  padding: 0 0 1.75rem 1.75rem;
  border-left: 2px solid transparent;
  border-image: linear-gradient(180deg, var(--color-accent), var(--color-border)) 1;
}
.timeline__item:last-child .timeline__body {
  padding-bottom: 0;
}
.timeline__body::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 0.3em;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-accent);
  border: 2px solid var(--color-bg);
  transform: scale(0);
  transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.timeline__item.reveal .timeline__body::before {
  transform: scale(1);
}
.timeline__title {
  display: block;
  font-weight: 600;
  color: var(--color-text);
}
.timeline__detail {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
}

/* Competition ranking bars */
.rank-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.rank-row__head {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  margin-bottom: 0.6rem;
  flex-wrap: wrap;
}
.rank-row__place {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.125rem;
  color: var(--color-accent);
}
.rank-row__of {
  font-size: 0.8125rem;
  color: var(--color-text-tertiary);
}
.rank-row__title {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  margin-left: 0.25rem;
}
.rank-track {
  position: relative;
  height: 8px;
  background: var(--color-border);
  border-radius: 999px;
}
.rank-track__fill {
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  background: var(--color-accent);
  opacity: 0.3;
  border-radius: 999px;
}
.rank-track__marker {
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--color-accent);
  border: 2px solid var(--color-bg);
  box-shadow: 0 0 0 1px var(--color-accent);
}

/* Impact metrics */
.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}
.metric {
  border-left: 3px solid var(--color-accent);
  padding-left: 1.25rem;
}
.metric__value {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 600;
  line-height: 1;
  color: var(--color-accent);
  font-variant-numeric: tabular-nums;
}
.metric__label {
  font-size: 0.875rem;
  color: var(--color-text-tertiary);
  margin-top: 0.5rem;
}

/* Responsive */
@media (max-width: 900px) {
  .cert-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
  .band { padding: 2.5rem 0; }
  .band--hero { padding: 3rem 0 2rem; }
  .hero { padding: 3rem 0 2rem; }
  .section { padding: 2.5rem 0; }
  .site-header__nav { gap: 1rem; }
  .site-header__link { font-size: 0.8125rem; }
  .hero__meta { flex-direction: column; gap: 0.5rem; }
  .blog-item { flex-direction: column; gap: 0.25rem; }
  .blog-item__date { margin-left: 0; }
  .hero__header { flex-direction: column; align-items: flex-start; gap: 1rem; }
  .hero__photo { width: 120px; height: 120px; }
  .about-photo { width: 150px; height: 150px; }
  .about-hero { gap: 1.5rem; }
  .hero-stats { gap: 0.625rem; }
  .cert-grid { grid-template-columns: 1fr; }
  .comp-item { flex-direction: column; gap: 0.2rem; }
  .comp-item__rank { min-width: 0; }
  .work-grid { grid-template-columns: 1fr; }
  .metric-grid { grid-template-columns: repeat(2, 1fr); }
  .timeline__item { grid-template-columns: 3.25rem 1fr; gap: 0.875rem; }
  .timeline__year { font-size: 0.8125rem; }
}

/* Scroll reveal animations */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
[data-reveal].reveal {
  opacity: 1;
  transform: translateY(0);
}
[data-reveal]:nth-child(2) { transition-delay: 0.08s; }
[data-reveal]:nth-child(3) { transition-delay: 0.16s; }
[data-reveal]:nth-child(4) { transition-delay: 0.24s; }
[data-reveal]:nth-child(5) { transition-delay: 0.32s; }
[data-reveal]:nth-child(n+6) { transition-delay: 0.4s; }

@media (prefers-reduced-motion: reduce) {
  [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .timeline__body::before { transform: scale(1); transition: none; }
}

/* Print styles */
@media print {
  .site-header,
  .site-footer,
  .theme-toggle,
  .hero__actions,
  .now-bar,
  .band--feature {
    display: none !important;
  }
  :root {
    --color-bg: #fff;
    --color-bg-secondary: #fff;
    --color-text: #000;
    --color-text-secondary: #222;
    --color-text-tertiary: #444;
  }
  body {
    background: #fff;
    color: #000;
  }
  [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }
  .band,
  .band--hero,
  .band--alt {
    background: #fff !important;
    padding: 1rem 0 !important;
  }
  .work-card,
  .cert-group,
  .hero-stat,
  .metric {
    box-shadow: none !important;
    transform: none !important;
  }
  .hero__photo {
    box-shadow: none !important;
    border: 1px solid #000;
  }
  a {
    color: #000 !important;
    text-decoration: underline;
  }
}