:root {
  --ink: #102033;
  --ink-soft: #38506a;
  --paper: #f6fbff;
  --surface: #ffffff;
  --surface-soft: #eef8fb;
  --line: #d9e8f0;
  --blue: #195bff;
  --blue-dark: #123a8f;
  --teal: #00a88f;
  --teal-dark: #067568;
  --teal-soft: #d9f6ef;
  --sky-soft: #eaf4ff;
  --shadow: 0 18px 50px rgba(16, 32, 51, 0.10);
  --radius: 8px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-size: 16px;
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 10;
  padding: 0.6rem 0.8rem;
  background: var(--ink);
  color: #fff;
  border-radius: var(--radius);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  border-bottom: 1px solid rgba(220, 231, 238, 0.8);
  background: rgba(247, 250, 252, 0.88);
  backdrop-filter: blur(18px);
}

.nav {
  position: relative;
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  margin: 5px 0;
  border-radius: 2px;
  background: var(--blue-dark);
  transition: transform 180ms ease, opacity 180ms ease;
}

.menu-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-weight: 800;
}

.brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  color: #fff;
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--blue), var(--teal));
  box-shadow: 0 8px 22px rgba(25, 91, 255, 0.25);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav-links a {
  padding: 0.45rem 0.65rem;
  border-radius: var(--radius);
  color: var(--ink-soft);
  font-weight: 700;
  font-size: 0.92rem;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--blue-dark);
  background: rgba(25, 91, 255, 0.08);
  outline: none;
}

.nav-icon {
  min-width: 36px;
  height: 36px;
  display: inline-grid;
  place-items: center;
  color: #fff !important;
  background: var(--blue-dark);
  border-radius: var(--radius);
  font-weight: 900;
  transition: color 160ms ease, background 160ms ease, border-color 160ms ease;
}

.nav-links .nav-icon:hover,
.nav-links .nav-icon:focus-visible {
  color: var(--blue-dark) !important;
  border: 1px solid var(--blue-dark);
  background: #fff;
}

.lang-switch {
  border: 1px solid var(--line);
  background: var(--surface);
}

.hero,
.section,
.footer-inner {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  min-height: calc(100vh - 68px);
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(280px, 0.92fr);
  align-items: center;
  gap: clamp(2rem, 5vw, 5rem);
  padding: 5rem 0 3rem;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin: 0 0 1rem;
  color: var(--blue-dark);
  font-size: 0.9rem;
  font-weight: 850;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 12ch;
  margin-bottom: 1rem;
  font-size: clamp(2.6rem, 7vw, 5.8rem);
  line-height: 0.96;
  letter-spacing: 0;
}

.lead {
  max-width: 64ch;
  color: var(--ink-soft);
  font-size: clamp(1.04rem, 2vw, 1.22rem);
}

.hero-actions,
.card-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 1.6rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 44px;
  padding: 0.7rem 1rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  font-weight: 850;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button.primary {
  color: #fff;
  background: linear-gradient(135deg, var(--blue), var(--teal));
  box-shadow: 0 14px 30px rgba(25, 91, 255, 0.24);
}

.button.secondary {
  color: var(--ink);
  border-color: var(--line);
  background: var(--surface);
}

.button.accent {
  color: #fff;
  background: var(--blue-dark);
  box-shadow: 0 14px 30px rgba(18, 58, 143, 0.20);
}

.hero-panel {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 520px;
}

.hero-panel-mobile {
  display: none;
}

.avatar-orbit {
  position: relative;
  width: min(100%, 390px);
  aspect-ratio: 1 / 1.18;
  display: grid;
  place-items: center;
}

.avatar-glow {
  position: absolute;
  inset: 8% 4%;
  border-radius: 42% 58% 48% 52%;
  background:
    linear-gradient(135deg, rgba(25, 91, 255, 0.18), rgba(0, 168, 143, 0.16)),
    radial-gradient(circle at 74% 20%, rgba(18, 58, 143, 0.18), transparent 32%);
  animation: pulseShape 7s ease-in-out infinite;
}

.avatar-card {
  position: relative;
  width: 82%;
  overflow: visible;
  background: transparent;
  aspect-ratio: 1 / 1;
  transform-origin: 50% 92%;
  animation: floatAvatar 3.8s ease-in-out infinite, helloTilt 2.4s ease-in-out infinite;
}

.avatar-card img {
  display: block;
  width: 100%;
  height: auto;
  filter: drop-shadow(0 24px 34px rgba(16, 32, 51, 0.16));
}

.signal-card {
  position: absolute;
  left: 0;
  bottom: 3rem;
  max-width: 270px;
  padding: 1rem;
  border: 1px solid rgba(25, 91, 255, 0.18);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 16px 36px rgba(16, 32, 51, 0.10);
}

.signal-card::after {
  content: "";
  position: absolute;
  right: 34px;
  top: -14px;
  width: 26px;
  height: 26px;
  border-left: 1px solid rgba(25, 91, 255, 0.18);
  border-top: 1px solid rgba(25, 91, 255, 0.18);
  background: rgba(255, 255, 255, 0.94);
  transform: rotate(45deg);
}

.signal-card strong {
  display: block;
  color: var(--blue-dark);
}

.section {
  position: relative;
  z-index: 1;
  padding: 4.6rem 0;
}

.section::before {
  content: "";
  position: absolute;
  inset: 0 calc((100vw - 100%) / -2);
  z-index: -1;
  background: rgba(255, 255, 255, 0.62);
}

.section:nth-of-type(odd)::before {
  background: var(--surface-soft);
}

.section-header {
  max-width: 820px;
  margin-bottom: 1.8rem;
}

.section-header h2 {
  margin-bottom: 0.5rem;
  font-size: clamp(1.8rem, 4vw, 3rem);
  line-height: 1.08;
}

.section-header p {
  color: var(--ink-soft);
}

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

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

.grid.four {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.grid.six {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card,
.timeline-item,
.language-card,
.path-item,
.profile-panel,
.scope-item {
  padding: 1.15rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 10px 28px rgba(16, 32, 51, 0.06);
}

.card {
  position: relative;
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background: linear-gradient(180deg, var(--blue), var(--teal));
}

.card h3,
.timeline-item h3,
.path-item h3 {
  margin-bottom: 0.35rem;
  color: var(--blue-dark);
  font-size: 1.06rem;
}

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

.profile-panel {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  align-items: start;
  background:
    linear-gradient(135deg, rgba(25, 91, 255, 0.08), transparent 52%),
    #fff;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.profile-panel:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.profile-index {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  color: #fff;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue), var(--blue-dark));
  font-weight: 900;
}

.profile-panel h3,
.scope-item h3 {
  margin-bottom: 0.35rem;
  color: var(--blue-dark);
}

.scope-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: stretch;
  gap: 1rem;
  margin-top: 1rem;
}

.scope-item {
  position: relative;
  overflow: hidden;
  min-height: 230px;
  height: 100%;
  background: linear-gradient(145deg, #dbe7f3, #edf3f8);
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.scope-item:nth-child(2) {
  background: linear-gradient(145deg, #dbe7f3, #edf3f8);
}

.scope-item-wide {
  background: linear-gradient(145deg, #dbe7f3, #edf3f8);
}

.scope-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.scope-label {
  display: inline-flex;
  margin-bottom: 0.75rem;
  padding: 0.24rem 0.55rem;
  color: #fff;
  border-radius: 999px;
  background: var(--blue-dark);
  font-size: 0.86rem;
  font-weight: 850;
  text-transform: uppercase;
}

.scope-item:nth-child(2) .scope-label {
  background: var(--blue-dark);
}

.mini-list,
.timeline-list,
.path-list {
  padding-left: 1.1rem;
  margin: 0.75rem 0 0;
}

.mini-list li,
.timeline-list li,
.path-list li {
  margin: 0.28rem 0;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.42rem;
  padding: 0;
  margin: 1rem 0 0;
  list-style: none;
}

.tag-list li {
  padding: 0.32rem 0.5rem;
  border-radius: 999px;
  background: var(--teal-soft);
  color: #075c50;
  font-size: 0.84rem;
  font-weight: 760;
}

.tag-list.compact li {
  font-size: 0.8rem;
}

.timeline {
  position: relative;
  display: grid;
  gap: 1rem;
  padding-left: 1.3rem;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 0.2rem;
  top: 0.5rem;
  bottom: 0.5rem;
  width: 2px;
  background: linear-gradient(180deg, var(--blue), var(--teal));
}

.timeline-item {
  position: relative;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -1.6rem;
  top: 1.35rem;
  width: 12px;
  height: 12px;
  border: 3px solid #fff;
  border-radius: 50%;
  background: var(--blue);
  box-shadow: 0 0 0 3px rgba(25, 91, 255, 0.15);
}

.meta {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 0.65rem;
  color: var(--blue-dark);
  font-weight: 850;
  font-size: 1.18rem;
  line-height: 1.3;
}

.timeline-item h3 {
  font-size: 1.02rem;
}

.timeline-tags {
  margin-top: 0.9rem;
}

.path-timeline {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

.path-item {
  border-top: 4px solid var(--blue);
}

.path-item:nth-child(even) {
  border-top-color: var(--teal);
}

.path-date {
  display: inline-flex;
  margin-bottom: 0.7rem;
  padding: 0.25rem 0.55rem;
  color: #fff;
  border-radius: 999px;
  background: var(--blue-dark);
  font-weight: 850;
  font-size: 0.82rem;
}

.cert-grid {
  margin-top: 1rem;
}

.certification-heading {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}

.certification-heading span {
  color: var(--blue-dark);
  font-size: 1.35rem;
  font-weight: 900;
}

.certification-heading p {
  margin: 0;
  color: var(--ink-soft);
}

.certificate-card {
  padding-top: 1.4rem;
  background:
    linear-gradient(135deg, rgba(25, 91, 255, 0.07), transparent 48%),
    #fff;
}

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

.language-card {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 1rem;
}

.language-code {
  width: 58px;
  height: 58px;
  display: grid;
  place-items: center;
  color: #fff;
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--blue), var(--teal));
  font-weight: 900;
  font-size: 1.15rem;
}

.language-card h3 {
  margin-bottom: 0.15rem;
  color: var(--blue-dark);
}

.contact-panel {
  padding: 3rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.96), rgba(234, 244, 255, 0.9));
  box-shadow: var(--shadow);
}

.contact-panel::before {
  display: none;
}

.contact-panel .section-header p {
  color: var(--ink-soft);
}

.site-footer {
  padding: 2rem 0;
  color: var(--ink-soft);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  border-top: 1px solid var(--line);
  padding-top: 1.2rem;
}

.back-to-top {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 6;
  width: 50px;
  height: 50px;
  display: grid;
  place-items: center;
  color: #fff;
  border: 0;
  border: 0;
  border-radius: 50%;
  background: var(--blue-dark);
  box-shadow: 0 16px 32px rgba(16, 32, 51, 0.18);
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity 180ms ease, transform 180ms ease;
}

.back-to-top span {
  position: relative;
  width: 22px;
  height: 22px;
  display: block;
}

.back-to-top span::before {
  display: none;
}

.back-to-top span::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 7px;
  width: 12px;
  height: 12px;
  border-left: 3px solid #fff;
  border-top: 3px solid #fff;
  border-radius: 2px 0 0;
  transform: rotate(45deg);
}

.back-to-top:hover {
  background: var(--blue);
  transform: translateY(-3px);
}

.back-to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.letter-page .card {
  padding: clamp(1.2rem, 3vw, 2rem);
}

.letter-cta-row {
  display: flex;
  justify-content: flex-end;
  margin-top: 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
}

.letter-cta-standalone {
  width: min(1120px, 100%);
  margin: 1.5rem auto 0;
}

.letter-cta-row .button {
  min-width: 210px;
  min-height: 52px;
  font-size: 1rem;
  box-shadow: 0 16px 32px rgba(25, 91, 255, 0.22);
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 520ms ease, transform 520ms ease;
}

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

@keyframes floatAvatar {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-12px);
  }
}

@keyframes pulseShape {
  0%,
  100% {
    transform: rotate(0deg) scale(1);
  }
  50% {
    transform: rotate(4deg) scale(1.04);
  }
}

@keyframes helloTilt {
  0%,
  100% {
    rotate: 0deg;
  }
  15% {
    rotate: 1.6deg;
  }
  30% {
    rotate: -1.2deg;
  }
  45% {
    rotate: 1deg;
  }
}

@media (max-width: 980px) {
  .grid,
  .grid.two,
  .grid.four,
  .grid.six,
  .path-timeline,
  .profile-stack,
  .scope-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 880px) {
  .nav {
    min-height: 64px;
    padding: 0.6rem 0;
  }

  .menu-toggle {
    display: block;
  }

  .nav-links {
    position: absolute;
    left: 0;
    right: 0;
    top: calc(100% + 1px);
    display: none;
    align-items: stretch;
    flex-direction: column;
    gap: 0.2rem;
    padding: 0.75rem;
    border: 1px solid var(--line);
    border-radius: 0 0 var(--radius) var(--radius);
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow);
  }

  .nav-links.is-open {
    display: flex;
  }

  .nav-links a {
    width: 100%;
    min-height: 42px;
    display: flex;
    align-items: center;
  }

  .nav-links .nav-icon {
    width: 42px;
    min-width: 42px;
    justify-content: center;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 1.5rem;
  }

  .hero-panel-desktop {
    display: none;
  }

  .hero-panel-mobile {
    display: grid;
    min-height: 390px;
    margin: 0.4rem 0 1rem;
  }

  .language-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .nav-links {
    width: auto;
  }

  .nav-links a {
    font-size: 0.86rem;
  }

  .hero,
  .section,
  .footer-inner {
    width: min(100% - 24px, 1120px);
  }

  .hero-panel-mobile {
    min-height: 330px;
  }

  .avatar-orbit {
    width: min(88%, 330px);
  }

  .signal-card {
    max-width: 245px;
    font-size: 0.92rem;
  }

  .grid,
  .grid.two,
  .grid.four,
  .grid.six,
  .path-timeline,
  .profile-stack,
  .scope-grid {
    grid-template-columns: 1fr;
  }

  .hero-actions,
  .card-actions {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .signal-card {
    position: relative;
    left: auto;
    bottom: auto;
    margin-top: -2rem;
  }

  .contact-panel {
    padding: 1.2rem;
  }
}

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

@media print {
  .site-header,
  .hero-actions,
  .card-actions,
  .avatar-orbit,
  .site-footer,
  .back-to-top {
    display: none;
  }

  body {
    background: #fff;
    color: #000;
    font-size: 11pt;
  }

  .hero,
  .section {
    width: 100%;
    min-height: auto;
    padding: 1rem 0;
  }

  .section::before {
    display: none;
  }

  .card,
  .timeline-item,
  .language-card,
  .path-item,
  .profile-panel,
  .scope-item {
    box-shadow: none;
    break-inside: avoid;
  }
}