:root {
  --ink: #061012;
  --ink-soft: #0a1719;
  --surface: #102124;
  --paper: #edf4ef;
  --muted: #9db0aa;
  --accent: #72f2c5;
  --warm: #e4b86a;
  --line: rgba(211, 236, 227, 0.16);
  --header-height: 78px;
  --gutter: clamp(1.25rem, 4vw, 4.75rem);
  --content-width: 1440px;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--ink);
}

body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 5px;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.7rem 1rem;
  border-radius: 999px;
  background: var(--accent);
  color: var(--ink);
  font-weight: 700;
  transform: translateY(-160%);
  transition: transform 180ms ease;
}

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

.site-header {
  position: absolute;
  z-index: 20;
  top: 0;
  left: 0;
  display: flex;
  width: 100%;
  height: var(--header-height);
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--gutter);
  border-bottom: 1px solid var(--line);
  animation: header-in 700ms 80ms both cubic-bezier(0.22, 1, 0.36, 1);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.88rem;
  font-weight: 680;
  letter-spacing: 0.16em;
}

.brand-mark {
  width: 0.8rem;
  height: 0.8rem;
  background: var(--accent);
  box-shadow: 0.38rem -0.38rem 0 rgba(114, 242, 197, 0.3);
  transform: rotate(45deg);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(1.5rem, 3vw, 3.5rem);
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
}

.site-nav a {
  position: relative;
  padding: 0.65rem 0;
  transition: color 180ms ease;
}

.site-nav a::after {
  position: absolute;
  right: 0;
  bottom: 0.25rem;
  left: 0;
  height: 1px;
  background: var(--accent);
  content: "";
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 220ms ease;
}

.site-nav a:hover {
  color: var(--paper);
}

.site-nav a:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.hero {
  position: relative;
  display: grid;
  min-height: 100svh;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
  align-items: center;
  overflow: hidden;
  padding: calc(var(--header-height) + 4.5rem) var(--gutter) 7.5rem;
  isolation: isolate;
}

.hero::after {
  position: absolute;
  z-index: -3;
  right: -15%;
  bottom: -28%;
  width: 58vw;
  height: 58vw;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(114, 242, 197, 0.1), transparent 65%);
  content: "";
}

.hero-grid {
  position: absolute;
  z-index: -4;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-position: center;
  background-size: 54px 54px;
  mask-image: linear-gradient(to right, transparent 5%, #000 50%, #000 100%);
  animation: grid-drift 22s linear infinite;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 820px;
  animation: hero-in 900ms 160ms both cubic-bezier(0.22, 1, 0.36, 1);
}

.eyebrow,
.section-index,
.project-meta,
.hero-meta,
.scene-label {
  color: var(--accent);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.eyebrow {
  margin: 0 0 1.75rem;
}

.legal-name {
  margin: 0 0 0.8rem;
  color: var(--muted);
  font-size: clamp(0.82rem, 1vw, 0.95rem);
  letter-spacing: 0.12em;
}

.hero-title {
  max-width: 12ch;
  margin: 0;
  font-size: clamp(3.5rem, 6.8vw, 7.6rem);
  font-weight: 740;
  letter-spacing: -0.075em;
  line-height: 0.98;
  text-wrap: balance;
}

.hero-copy {
  max-width: 39rem;
  margin: clamp(2rem, 4vh, 3.4rem) 0 0;
  color: var(--muted);
  font-size: clamp(1rem, 1.35vw, 1.18rem);
}

.hero-actions {
  display: flex;
  margin-top: 2.4rem;
  gap: 1.8rem;
}

.text-link {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  border-bottom: 1px solid var(--line);
  color: var(--paper);
  font-size: 0.86rem;
  letter-spacing: 0.08em;
  transition: border-color 180ms ease, color 180ms ease;
}

.text-link::after {
  margin-left: 0.7rem;
  content: "↘";
  transition: transform 180ms ease;
}

.text-link:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.text-link:hover::after {
  transform: translate(3px, 3px);
}

.text-link-primary {
  border-color: var(--accent);
  color: var(--accent);
}

.voxel-scene {
  position: relative;
  z-index: 1;
  width: min(42vw, 620px);
  aspect-ratio: 1;
  justify-self: end;
  animation: scene-in 1100ms 260ms both cubic-bezier(0.22, 1, 0.36, 1);
}

.voxel-scene::before,
.voxel-scene::after {
  position: absolute;
  border: 1px solid var(--line);
  border-radius: 50%;
  content: "";
  inset: 8%;
}

.voxel-scene::after {
  border-style: dashed;
  inset: 22%;
  animation: orbit-spin 28s linear infinite;
}

.scene-axis {
  position: absolute;
  top: 50%;
  left: 50%;
  background: var(--line);
  transform: translate(-50%, -50%);
}

.scene-axis-x {
  width: 100%;
  height: 1px;
}

.scene-axis-y {
  width: 1px;
  height: 100%;
}

.scene-label {
  position: absolute;
  color: var(--muted);
}

.scene-label-top {
  top: 4%;
  right: 8%;
}

.scene-label-bottom {
  bottom: 4%;
  left: 7%;
}

.voxel-field {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 67%;
  height: 67%;
  transform: translate(-50%, -50%) rotate(-8deg);
}

.voxel {
  position: absolute;
  width: 17%;
  aspect-ratio: 1;
  border: 1px solid rgba(237, 244, 239, 0.4);
  background: linear-gradient(145deg, rgba(114, 242, 197, 0.38), rgba(16, 33, 36, 0.65));
  box-shadow: inset -12px -14px 24px rgba(0, 0, 0, 0.25), 0 18px 40px rgba(0, 0, 0, 0.18);
  transform: rotate(45deg);
  animation: voxel-float 6s ease-in-out infinite;
}

.voxel:nth-child(3n) {
  background: linear-gradient(145deg, rgba(228, 184, 106, 0.58), rgba(44, 37, 26, 0.72));
}

.voxel-01 { top: 5%; left: 42%; animation-delay: -0.4s; }
.voxel-02 { top: 22%; left: 22%; width: 12%; animation-delay: -1.6s; }
.voxel-03 { top: 24%; left: 52%; width: 23%; animation-delay: -2.2s; }
.voxel-04 { top: 42%; left: 4%; width: 15%; animation-delay: -3.3s; }
.voxel-05 { top: 45%; left: 33%; width: 19%; animation-delay: -4.2s; }
.voxel-06 { top: 50%; left: 69%; width: 13%; animation-delay: -0.9s; }
.voxel-07 { top: 68%; left: 18%; width: 22%; animation-delay: -2.8s; }
.voxel-08 { top: 73%; left: 55%; width: 16%; animation-delay: -5.2s; }
.voxel-09 { top: 5%; left: 72%; width: 9%; animation-delay: -3.9s; }
.voxel-10 { top: 37%; left: 82%; width: 10%; animation-delay: -1.2s; }
.voxel-11 { top: 84%; left: 83%; width: 8%; animation-delay: -4.7s; }
.voxel-12 { top: 5%; left: 8%; width: 8%; animation-delay: -2.1s; }

.hero-meta {
  position: absolute;
  right: var(--gutter);
  bottom: 2rem;
  left: var(--gutter);
  display: flex;
  justify-content: space-between;
  border-top: 1px solid var(--line);
  padding-top: 1rem;
  color: var(--muted);
}

.section {
  width: min(100%, var(--content-width));
  margin: 0 auto;
  padding: clamp(6rem, 10vw, 10rem) var(--gutter);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(140px, 0.3fr) minmax(300px, 1fr) minmax(260px, 0.55fr);
  align-items: start;
  gap: clamp(2rem, 5vw, 6rem);
  margin-bottom: clamp(4rem, 8vw, 7rem);
}

.section-heading-wide {
  grid-template-columns: minmax(140px, 0.3fr) 1.55fr;
}

.section-index {
  margin: 0;
}

.section-heading h2,
.technology h2,
.about h2 {
  margin: 0;
  font-size: clamp(2.3rem, 4.8vw, 5.4rem);
  font-weight: 650;
  letter-spacing: -0.055em;
  line-height: 1.06;
  text-wrap: balance;
}

.section-heading > p:last-child {
  margin: 0;
  color: var(--muted);
}

.capabilities {
  background: var(--ink);
}

.capability-list,
.project-list {
  border-top: 1px solid var(--line);
}

.capability-row {
  display: grid;
  grid-template-columns: 0.22fr 0.78fr 1fr;
  align-items: start;
  gap: clamp(1.5rem, 4vw, 5rem);
  padding: 2.25rem 0;
  border-bottom: 1px solid var(--line);
}

.row-number {
  color: var(--warm);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.74rem;
}

.capability-row h3,
.project-body h3 {
  margin: 0;
  font-size: clamp(1.25rem, 2vw, 1.75rem);
  font-weight: 560;
  letter-spacing: -0.025em;
}

.capability-row p,
.project-body p {
  max-width: 44rem;
  margin: 0;
  color: var(--muted);
}

.work {
  width: 100%;
  max-width: none;
  background: var(--paper);
  color: var(--ink);
}

.work > * {
  width: min(100%, calc(var(--content-width) - var(--gutter) * 2));
  margin-right: auto;
  margin-left: auto;
}

.work .section-index,
.work .project-meta {
  color: #356858;
}

.work .project-list {
  border-color: rgba(6, 16, 18, 0.18);
}

.project-row {
  position: relative;
  display: grid;
  grid-template-columns: minmax(150px, 0.28fr) minmax(320px, 1fr) auto;
  align-items: start;
  gap: clamp(2rem, 5vw, 6rem);
  padding: clamp(2.5rem, 5vw, 4.5rem) 0;
  border-bottom: 1px solid rgba(6, 16, 18, 0.18);
  transition: padding 260ms cubic-bezier(0.22, 1, 0.36, 1);
}

.project-row::before {
  position: absolute;
  top: 0;
  bottom: 0;
  left: calc(var(--gutter) * -1);
  width: 3px;
  background: #2f7d64;
  content: "";
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform 260ms ease;
}

.project-row:hover {
  padding-right: 0.65rem;
  padding-left: 0.65rem;
}

.project-row:hover::before {
  transform: scaleY(1);
  transform-origin: top;
}

.project-meta {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}

.project-body h3 {
  margin-bottom: 1.1rem;
  font-size: clamp(1.55rem, 3vw, 2.7rem);
}

.project-body p {
  color: #53605c;
}

.project-status {
  display: inline-flex;
  align-items: center;
  border: 1px solid rgba(6, 16, 18, 0.24);
  border-radius: 999px;
  padding: 0.42rem 0.75rem;
  color: #53605c;
  font-size: 0.72rem;
  white-space: nowrap;
}

.technology {
  position: relative;
  overflow: hidden;
  background: var(--accent);
  color: var(--ink);
}

.technology::after {
  position: absolute;
  top: -36%;
  right: -10%;
  width: 34rem;
  height: 34rem;
  border: 1px solid rgba(6, 16, 18, 0.22);
  border-radius: 50%;
  box-shadow:
    0 0 0 4rem rgba(6, 16, 18, 0.035),
    0 0 0 8rem rgba(6, 16, 18, 0.025);
  content: "";
}

.technology-inner {
  position: relative;
  z-index: 1;
  width: min(100%, var(--content-width));
  margin: 0 auto;
  padding: clamp(5rem, 9vw, 9rem) var(--gutter);
}

.technology .section-index {
  color: rgba(6, 16, 18, 0.62);
}

.technology h2 {
  max-width: 12ch;
  margin-top: 2rem;
}

.tech-track {
  display: flex;
  flex-wrap: wrap;
  margin-top: clamp(3.5rem, 7vw, 6rem);
  border-top: 1px solid rgba(6, 16, 18, 0.3);
  border-left: 1px solid rgba(6, 16, 18, 0.3);
}

.tech-track span {
  padding: 0.9rem 1.2rem;
  border-right: 1px solid rgba(6, 16, 18, 0.3);
  border-bottom: 1px solid rgba(6, 16, 18, 0.3);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
}

.technology-copy {
  max-width: 42rem;
  margin: 2.5rem 0 0 auto;
  font-size: clamp(1rem, 1.4vw, 1.2rem);
}

.about-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(3rem, 8vw, 9rem);
}

.about h2 {
  max-width: 8ch;
  margin-top: 2rem;
}

.about-copy {
  align-self: end;
  color: var(--muted);
  font-size: clamp(1.08rem, 1.65vw, 1.35rem);
}

.about-copy p {
  margin: 0;
}

.site-purpose {
  margin-top: 2rem !important;
  padding-top: 2rem;
  border-top: 1px solid var(--line);
  font-size: 0.88rem;
}

.site-footer {
  display: flex;
  min-height: 110px;
  align-items: center;
  justify-content: center;
  gap: 1.4rem;
  padding: 2rem var(--gutter);
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.78rem;
  text-align: center;
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  border-bottom: 1px solid rgba(157, 176, 170, 0.5);
  transition: border-color 180ms ease, color 180ms ease;
}

.site-footer a:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.error-page {
  display: grid;
  min-height: 100svh;
  place-items: center;
  padding: var(--gutter);
  background:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    var(--ink);
  background-size: 54px 54px;
}

.error-content {
  max-width: 42rem;
}

.error-content h1 {
  margin: 1.5rem 0 0;
  font-size: clamp(3rem, 9vw, 7rem);
  letter-spacing: -0.06em;
  line-height: 1;
}

.error-content > p:not(.eyebrow) {
  margin: 2rem 0;
  color: var(--muted);
}

@keyframes header-in {
  from { opacity: 0; transform: translateY(-16px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes hero-in {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes scene-in {
  from { opacity: 0; transform: scale(0.84) rotate(8deg); }
  to { opacity: 1; transform: scale(1) rotate(0); }
}

@keyframes grid-drift {
  from { background-position: 0 0; }
  to { background-position: 54px 54px; }
}

@keyframes orbit-spin {
  to { transform: rotate(360deg); }
}

@keyframes voxel-float {
  0%, 100% { transform: rotate(45deg) translate(0, 0); }
  50% { transform: rotate(45deg) translate(-7px, -7px); }
}

@media (max-width: 980px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: calc(var(--header-height) + 4rem);
  }

  .hero-content {
    max-width: 760px;
  }

  .voxel-scene {
    position: absolute;
    z-index: -1;
    right: -13vw;
    bottom: 4rem;
    width: 60vw;
    min-width: 430px;
    opacity: 0.62;
  }

  .section-heading {
    grid-template-columns: 0.35fr 1.2fr;
  }

  .section-heading > p:last-child {
    grid-column: 2;
  }

  .project-row {
    grid-template-columns: 0.28fr 1fr;
  }

  .project-status {
    grid-column: 2;
    width: fit-content;
  }
}

@media (max-width: 720px) {
  :root {
    --header-height: 66px;
  }

  .site-nav {
    display: none;
  }

  .hero {
    min-height: 100svh;
    align-items: start;
    padding-top: calc(var(--header-height) + 4.25rem);
    padding-bottom: 8.5rem;
  }

  .hero-title {
    max-width: 9ch;
    font-size: clamp(3rem, 15vw, 5rem);
    letter-spacing: -0.07em;
  }

  .hero-copy {
    max-width: 31rem;
  }

  .hero-actions {
    flex-wrap: wrap;
    gap: 1rem 1.6rem;
  }

  .voxel-scene {
    right: -38vw;
    bottom: 3.5rem;
    min-width: 390px;
    opacity: 0.48;
  }

  .hero-meta {
    gap: 1rem;
    overflow: hidden;
    white-space: nowrap;
  }

  .hero-meta span:nth-child(2) {
    display: none;
  }

  .section-heading,
  .section-heading-wide,
  .capability-row,
  .project-row,
  .about-layout {
    grid-template-columns: 1fr;
  }

  .section-heading {
    gap: 1.5rem;
  }

  .section-heading > p:last-child,
  .project-status {
    grid-column: 1;
  }

  .capability-row {
    gap: 0.8rem;
    padding: 1.75rem 0;
  }

  .capability-row p {
    margin-top: 0.4rem;
  }

  .project-row {
    gap: 1.3rem;
  }

  .project-meta {
    justify-content: flex-start;
  }

  .project-row:hover {
    padding-right: 0;
    padding-left: 0;
  }

  .technology::after {
    right: -70%;
  }

  .technology-copy {
    margin-left: 0;
  }

  .about-copy {
    font-size: 1.05rem;
  }

  .site-footer {
    flex-direction: column;
    gap: 0.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation: none !important;
    transition-duration: 0.01ms !important;
  }
}