:root {
  --bg: #07111f;
  --bg-soft: #0b1729;
  --surface: rgba(15, 31, 52, 0.78);
  --surface-solid: #102039;
  --surface-light: #162942;
  --text: #f8fafc;
  --muted: #a9b7c9;
  --muted-strong: #cbd5e1;
  --accent: #38bdf8;
  --accent-2: #2dd4bf;
  --border: rgba(148, 163, 184, 0.22);
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.28);
  --radius: 22px;
  --radius-sm: 14px;
  --container: 1160px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  background:
    radial-gradient(circle at 10% 10%, rgba(56, 189, 248, 0.12), transparent 34%),
    radial-gradient(circle at 90% 4%, rgba(45, 212, 191, 0.08), transparent 28%),
    linear-gradient(180deg, #07111f 0%, #091526 45%, #07111f 100%);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}

body.menu-open {
  overflow: hidden;
}

a {
  color: inherit;
}

img {
  max-width: 100%;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 999;
  transform: translateY(-160%);
  padding: 10px 15px;
  border-radius: 10px;
  color: #07111f;
  background: #ffffff;
  font-weight: 800;
  text-decoration: none;
}

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

.container {
  width: min(calc(100% - 36px), var(--container));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(148, 163, 184, 0.13);
  background: rgba(7, 17, 31, 0.88);
  backdrop-filter: blur(16px);
}

.nav-wrap {
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--text);
  text-decoration: none;
  font-size: 1rem;
  font-weight: 850;
  letter-spacing: -0.02em;
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid rgba(56, 189, 248, 0.45);
  border-radius: 12px;
  background: linear-gradient(145deg, rgba(56, 189, 248, 0.18), rgba(45, 212, 191, 0.08));
  box-shadow: 0 10px 30px rgba(56, 189, 248, 0.12);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 7px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-list a {
  display: block;
  padding: 9px 11px;
  border-radius: 10px;
  color: var(--muted-strong);
  font-size: 0.92rem;
  font-weight: 700;
  text-decoration: none;
}

.nav-list a:hover,
.nav-list a:focus-visible {
  color: var(--text);
  background: rgba(148, 163, 184, 0.11);
  outline: none;
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text);
  background: rgba(15, 31, 52, 0.8);
  cursor: pointer;
}

.nav-toggle svg {
  width: 23px;
  height: 23px;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 90px 0 70px;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto -120px -180px auto;
  width: 440px;
  height: 440px;
  border: 1px solid rgba(56, 189, 248, 0.14);
  border-radius: 50%;
  box-shadow:
    0 0 0 55px rgba(56, 189, 248, 0.025),
    0 0 0 110px rgba(45, 212, 191, 0.02);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
  align-items: center;
  gap: clamp(48px, 7vw, 95px);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 18px;
  color: #8ddcf8;
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 34px;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}

.hero h1 {
  margin: 0;
  max-width: 790px;
  font-size: clamp(3rem, 7vw, 6.25rem);
  line-height: 0.96;
  letter-spacing: -0.065em;
}

.hero-title {
  margin: 23px 0 0;
  max-width: 760px;
  color: var(--muted-strong);
  font-size: clamp(1.08rem, 2.15vw, 1.42rem);
  line-height: 1.5;
  font-weight: 680;
}

.hero-intro {
  max-width: 750px;
  margin: 22px 0 0;
  color: var(--muted);
  font-size: clamp(1rem, 1.6vw, 1.13rem);
}

.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin-top: 25px;
  color: var(--muted-strong);
  font-size: 0.94rem;
  font-weight: 700;
}

.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.meta-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent-2);
  box-shadow: 0 0 0 5px rgba(45, 212, 191, 0.09);
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.btn {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 12px 18px;
  border: 1px solid var(--border);
  border-radius: 13px;
  color: var(--text);
  background: rgba(15, 31, 52, 0.68);
  font-weight: 800;
  text-decoration: none;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-2px);
  border-color: rgba(56, 189, 248, 0.55);
  outline: none;
}

.btn-primary {
  border-color: transparent;
  color: #03111c;
  background: linear-gradient(135deg, #7dd3fc, #5eead4);
  box-shadow: 0 12px 34px rgba(56, 189, 248, 0.18);
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
  background: rgba(56, 189, 248, 0.08);
}

.profile-card {
  position: relative;
  width: min(100%, 390px);
  margin-inline: auto;
  padding: 17px;
  border: 1px solid var(--border);
  border-radius: 30px;
  background: linear-gradient(160deg, rgba(20, 43, 69, 0.92), rgba(11, 25, 43, 0.78));
  box-shadow: var(--shadow);
}

.profile-card::before {
  content: "";
  position: absolute;
  inset: -1px;
  z-index: -1;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.35), transparent 38%, rgba(45, 212, 191, 0.22));
  opacity: 0.65;
}

.profile-photo {
  display: block;
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  object-position: 50% 40%;
  border-radius: 20px;
  background: #17263a;
}

.profile-note {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 13px;
  align-items: center;
  padding: 17px 7px 5px;
}

.profile-note-icon {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border-radius: 13px;
  color: #07111f;
  background: linear-gradient(135deg, #7dd3fc, #5eead4);
  font-weight: 950;
}

.profile-note strong {
  display: block;
  font-size: 0.97rem;
}

.profile-note span {
  display: block;
  margin-top: 2px;
  color: var(--muted);
  font-size: 0.86rem;
}

.section {
  padding: 82px 0;
}

.section-tight {
  padding-top: 48px;
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 0.75fr) minmax(280px, 1.25fr);
  gap: 38px;
  align-items: end;
  margin-bottom: 35px;
}

.section-label {
  margin: 0 0 10px;
  color: #8ddcf8;
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.section h2 {
  margin: 0;
  font-size: clamp(2rem, 4.6vw, 3.65rem);
  line-height: 1.06;
  letter-spacing: -0.045em;
}

.section-intro {
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
  gap: 25px;
}

.panel {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(16, 32, 57, 0.88), rgba(10, 24, 42, 0.75));
  box-shadow: 0 16px 50px rgba(0, 0, 0, 0.16);
}

.about-copy {
  padding: clamp(25px, 4vw, 42px);
}

.about-copy p {
  margin: 0;
  color: var(--muted-strong);
  font-size: 1.06rem;
}

.about-copy p + p {
  margin-top: 18px;
}

.principles {
  display: grid;
  gap: 1px;
  overflow: hidden;
}

.principle {
  padding: 24px 26px;
  background: rgba(15, 31, 52, 0.55);
}

.principle + .principle {
  border-top: 1px solid var(--border);
}

.principle strong {
  display: block;
  margin-bottom: 5px;
}

.principle span {
  color: var(--muted);
  font-size: 0.93rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.focus-card {
  min-height: 270px;
  padding: 25px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background:
    linear-gradient(160deg, rgba(17, 36, 61, 0.9), rgba(9, 23, 40, 0.8));
  transition: transform 170ms ease, border-color 170ms ease;
}

.focus-card:hover {
  transform: translateY(-5px);
  border-color: rgba(56, 189, 248, 0.42);
}

.card-number {
  display: inline-grid;
  width: 42px;
  height: 42px;
  place-items: center;
  margin-bottom: 43px;
  border: 1px solid rgba(56, 189, 248, 0.28);
  border-radius: 13px;
  color: #9be4ff;
  background: rgba(56, 189, 248, 0.07);
  font-size: 0.78rem;
  font-weight: 900;
}

.focus-card h3,
.project-card h3 {
  margin: 0;
  font-size: 1.16rem;
  line-height: 1.3;
}

.focus-card p,
.project-card p {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 0.94rem;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.project-card {
  display: flex;
  min-height: 340px;
  flex-direction: column;
  padding: 27px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: linear-gradient(155deg, rgba(17, 36, 61, 0.9), rgba(8, 22, 39, 0.82));
  text-decoration: none;
  transition: transform 170ms ease, border-color 170ms ease;
}

.project-card:hover,
.project-card:focus-visible {
  transform: translateY(-5px);
  border-color: rgba(45, 212, 191, 0.48);
  outline: none;
}

.project-badge {
  align-self: flex-start;
  margin-bottom: 45px;
  padding: 7px 10px;
  border: 1px solid rgba(45, 212, 191, 0.3);
  border-radius: 999px;
  color: #90f3e5;
  background: rgba(45, 212, 191, 0.07);
  font-size: 0.73rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-top: auto;
  padding-top: 26px;
  color: #8ddcf8;
  font-size: 0.91rem;
  font-weight: 850;
}

.timeline {
  position: relative;
  display: grid;
  gap: 15px;
}

.timeline::before {
  content: "";
  position: absolute;
  top: 15px;
  bottom: 15px;
  left: 15px;
  width: 1px;
  background: linear-gradient(var(--accent), rgba(148, 163, 184, 0.14));
}

.timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 18px;
}

.timeline-dot {
  position: relative;
  z-index: 2;
  width: 13px;
  height: 13px;
  margin: 21px auto 0;
  border: 3px solid #07111f;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 5px rgba(56, 189, 248, 0.12);
}

.timeline-card {
  padding: 23px 25px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: rgba(15, 31, 52, 0.69);
}

.timeline-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
}

.timeline-card h3 {
  margin: 0;
  font-size: 1.08rem;
}

.timeline-card .company {
  display: block;
  margin-top: 3px;
  color: #8ddcf8;
  font-weight: 750;
}

.timeline-card time {
  flex: 0 0 auto;
  color: var(--muted);
  font-size: 0.87rem;
  font-weight: 750;
}

.timeline-card p {
  margin: 13px 0 0;
  color: var(--muted);
  font-size: 0.94rem;
}

.credentials-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 17px;
}

.credential {
  min-height: 190px;
  padding: 25px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: rgba(15, 31, 52, 0.66);
}

.credential small {
  display: block;
  margin-bottom: 28px;
  color: #90f3e5;
  font-size: 0.72rem;
  font-weight: 850;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.credential h3 {
  margin: 0;
  font-size: 1.05rem;
  line-height: 1.35;
}

.credential p {
  margin: 9px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.contact-panel {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(260px, 0.8fr);
  gap: 30px;
  align-items: center;
  padding: clamp(29px, 5vw, 55px);
  border: 1px solid rgba(56, 189, 248, 0.23);
  border-radius: 28px;
  background:
    radial-gradient(circle at 85% 20%, rgba(45, 212, 191, 0.1), transparent 30%),
    linear-gradient(150deg, rgba(18, 40, 66, 0.96), rgba(10, 25, 43, 0.87));
  box-shadow: var(--shadow);
}

.contact-panel h2 {
  margin: 0;
}

.contact-panel p {
  margin: 17px 0 0;
  color: var(--muted);
}

.contact-links {
  display: grid;
  gap: 10px;
}

.contact-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 15px 17px;
  border: 1px solid var(--border);
  border-radius: 13px;
  color: var(--muted-strong);
  background: rgba(7, 17, 31, 0.42);
  font-size: 0.92rem;
  font-weight: 750;
  text-decoration: none;
}

.contact-link:hover,
.contact-link:focus-visible {
  border-color: rgba(56, 189, 248, 0.45);
  color: var(--text);
  outline: none;
}

.site-footer {
  padding: 30px 0 45px;
  color: #7f91a9;
  font-size: 0.87rem;
}

.footer-wrap {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  border-top: 1px solid rgba(148, 163, 184, 0.13);
  padding-top: 25px;
}

.footer-wrap a {
  color: var(--muted-strong);
  text-decoration: none;
}

/* Project pages */
.project-page {
  padding: 65px 0 90px;
}

.breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-bottom: 30px;
  color: var(--muted);
  font-weight: 750;
  text-decoration: none;
}

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

.project-hero {
  max-width: 880px;
}

.project-hero .project-badge {
  margin-bottom: 20px;
}

.project-hero h1 {
  margin: 0;
  font-size: clamp(2.6rem, 6vw, 5.35rem);
  line-height: 1;
  letter-spacing: -0.06em;
}

.project-hero > p {
  margin: 25px 0 0;
  color: var(--muted);
  font-size: 1.08rem;
}

.case-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 26px;
  margin-top: 48px;
}

.case-content {
  padding: clamp(25px, 4vw, 43px);
}

.case-content h2 {
  margin: 0 0 13px;
  font-size: 1.45rem;
  letter-spacing: -0.025em;
}

.case-content h2:not(:first-child) {
  margin-top: 36px;
}

.case-content p,
.case-content li {
  color: var(--muted);
}

.case-content ul {
  padding-left: 20px;
}

.case-sidebar {
  align-self: start;
  position: sticky;
  top: 98px;
  padding: 24px;
}

.case-sidebar h2 {
  margin: 0 0 17px;
  font-size: 1rem;
}

.case-sidebar dl {
  display: grid;
  gap: 15px;
  margin: 0;
}

.case-sidebar dt {
  color: #8ddcf8;
  font-size: 0.72rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.case-sidebar dd {
  margin: 3px 0 0;
  color: var(--muted-strong);
  font-size: 0.91rem;
  font-weight: 700;
}

.notice {
  margin-top: 25px;
  padding: 17px 18px;
  border: 1px solid rgba(45, 212, 191, 0.27);
  border-radius: 14px;
  color: #b8f6ed;
  background: rgba(45, 212, 191, 0.06);
  font-size: 0.9rem;
}

/* 404 */
.not-found {
  min-height: calc(100vh - 75px);
  display: grid;
  place-items: center;
  padding: 60px 0;
  text-align: center;
}

.not-found h1 {
  margin: 0;
  font-size: clamp(5rem, 18vw, 10rem);
  line-height: 0.9;
  letter-spacing: -0.08em;
}

.not-found p {
  max-width: 540px;
  margin: 24px auto 0;
  color: var(--muted);
}

@media (max-width: 980px) {
  .card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .project-grid .project-card:last-child,
  .credentials-grid .credential:last-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 820px) {
  .nav-toggle {
    display: inline-flex;
  }

  .nav-menu {
    position: fixed;
    top: 74px;
    right: 18px;
    left: 18px;
    display: none;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 17px;
    background: rgba(8, 20, 36, 0.98);
    box-shadow: var(--shadow);
  }

  .nav-menu.open {
    display: block;
  }

  .nav-list {
    align-items: stretch;
    flex-direction: column;
  }

  .nav-list a {
    padding: 12px 13px;
  }

  .hero {
    padding-top: 65px;
  }

  .hero-grid,
  .about-grid,
  .contact-panel,
  .case-grid {
    grid-template-columns: 1fr;
  }

  .hero-copy {
    order: 2;
  }

  .profile-card {
    order: 1;
    width: min(72vw, 345px);
  }

  .section-head {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .case-sidebar {
    position: static;
  }
}

@media (max-width: 620px) {
  .container {
    width: min(calc(100% - 28px), var(--container));
  }

  .hero {
    padding: 48px 0 48px;
  }

  .hero h1 {
    font-size: clamp(2.85rem, 15vw, 4.3rem);
  }

  .section {
    padding: 63px 0;
  }

  .card-grid,
  .project-grid,
  .credentials-grid {
    grid-template-columns: 1fr;
  }

  .project-grid .project-card:last-child,
  .credentials-grid .credential:last-child {
    grid-column: auto;
  }

  .focus-card {
    min-height: 0;
  }

  .card-number {
    margin-bottom: 31px;
  }

  .timeline-head {
    flex-direction: column;
    gap: 6px;
  }

  .timeline-card {
    padding: 21px;
  }

  .footer-wrap {
    flex-direction: column;
  }

  .button-row .btn {
    width: 100%;
  }
}

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