:root {
  --black: #0a0a0d;
  --charcoal: #111116;
  --panel: #1e1e24;
  --line: rgba(255, 255, 255, 0.2);
  --soft-line: rgba(168, 168, 179, 0.18);
  --white: #ffffff;
  --muted: #a8a8b3;
  --label: rgba(255, 255, 255, 0.64);
  --label-strong: rgba(255, 255, 255, 0.78);
  --cyan: #7b61ff;
  --purple: #7b61ff;
  --purple-soft: rgba(123, 97, 255, 0.28);
  --purple-glow: rgba(123, 97, 255, 0.5);
  --stardust: #a8a8b3;
  --max: 1380px;
  --header-h: 80px;
  --font-cn:
    "Source Han Sans CN", "Source Han Sans SC", "Noto Sans CJK SC",
    "思源黑体 CN", "Hiragino Sans GB", "Hiragino Sans", "PingFang SC",
    "Microsoft YaHei", sans-serif;
  --font-en:
    "XCORBIT SANS", "Aptos", "Inter", "Helvetica Neue", Arial, sans-serif;
  font-family: var(--font-cn);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: #0a0a0d;
}

body {
  margin: 0;
  min-height: 100dvh;
  background:
    radial-gradient(circle at 82% 6%, rgba(123, 97, 255, 0.34), transparent 30%),
    radial-gradient(circle at 18% 42%, rgba(123, 97, 255, 0.16), transparent 32%),
    linear-gradient(180deg, #0a0a0d 0%, #111116 42%, #0a0a0d 100%);
  color: var(--white);
  font-family: var(--font-cn);
  -webkit-font-smoothing: antialiased;
}

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

img {
  display: block;
  max-width: 100%;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 30;
  width: 100%;
  height: var(--header-h);
  background: rgba(10, 10, 13, 0.92);
  border-bottom: 1px solid rgba(123, 97, 255, 0.18);
  color: var(--white);
  backdrop-filter: blur(18px);
}

.header-inner {
  width: min(100% - 64px, var(--max));
  height: 100%;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(250px, 1fr) auto minmax(190px, 1fr);
  align-items: center;
  gap: 22px;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  width: 215px;
  height: 52px;
  overflow: hidden;
}

.brand-link img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: left center;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(24px, 2.6vw, 44px);
  min-height: auto;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: rgba(255, 255, 255, 0.82);
  font-family: var(--font-cn);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0;
  white-space: nowrap;
}

.nav a {
  transition:
    color 220ms ease,
    opacity 220ms ease;
}

.nav a:hover {
  color: var(--white);
  opacity: 1;
}

.header-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 14px;
}

.lang-toggle {
  border: 0;
  background: transparent;
  color: rgba(255, 255, 255, 0.84);
  font: inherit;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
}

.header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 84px;
  height: 38px;
  padding: 0 22px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--white);
  font-size: 14px;
  font-weight: 700;
  transition:
    border-color 220ms ease,
    background 220ms ease,
    transform 220ms ease;
}

.header-cta:hover {
  border-color: rgba(123, 97, 255, 0.82);
  background: rgba(123, 97, 255, 0.16);
  transform: translateY(-1px);
}

.panel {
  position: relative;
  min-height: calc(100dvh - var(--header-h));
  overflow: hidden;
  background: var(--black);
}

.panel::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    linear-gradient(
      132deg,
      transparent 0 57%,
      rgba(123, 97, 255, 0.08) 58%,
      rgba(123, 97, 255, 0.46) 59%,
      rgba(255, 255, 255, 0.2) 59.6%,
      rgba(123, 97, 255, 0.3) 60.3%,
      transparent 63%
    ),
    radial-gradient(ellipse at 78% 86%, rgba(123, 97, 255, 0.42), transparent 34%);
  mix-blend-mode: screen;
  opacity: 0.78;
}

.panel-media {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.panel-shade {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(to bottom, rgba(0, 0, 0, 0.42), transparent 34%),
    linear-gradient(to top, rgba(0, 0, 0, 0.88), transparent 54%),
    radial-gradient(circle at 78% 18%, rgba(123, 97, 255, 0.34), transparent 40%),
    radial-gradient(circle at 50% 34%, transparent, rgba(0, 0, 0, 0.36) 58%);
}

.hero-content {
  position: relative;
  z-index: 2;
  min-height: calc(100dvh - var(--header-h));
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 92px 24px 80px;
}

.hero-logo {
  width: min(68vw, 820px);
  filter: none !important;
  margin-bottom: clamp(20px, 3vw, 34px);
}

.hero-content p,
.craft-copy p {
  margin: 0;
  color: var(--white);
  font-family: var(--font-cn);
  font-weight: 400;
  font-size: clamp(12px, 1.2vw, 15px);
  line-height: 1.9;
  letter-spacing: 0;
}

.pill-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  margin-top: 28px;
  padding: 0 34px;
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 999px;
  color: var(--white);
  font-family: var(--font-cn);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0;
  transition:
    background 240ms ease,
    color 240ms ease,
    transform 240ms ease,
    border-color 240ms ease;
}

.pill-link:hover {
  background: rgba(123, 97, 255, 0.16);
  border-color: rgba(123, 97, 255, 0.9);
  transform: translateY(-2px);
}

.pill-link:active {
  transform: translateY(1px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
}

.progress-line {
  position: absolute;
  bottom: -92px;
  left: 50%;
  z-index: 3;
  width: 2px;
  height: 190px;
  transform: translateX(-50%);
  background: rgba(123, 97, 255, 0.28);
  box-shadow: 0 0 22px rgba(123, 97, 255, 0.54);
  overflow: hidden;
}

.progress-line span {
  display: block;
  width: 2px;
  height: 92px;
  background: linear-gradient(to bottom, var(--white), var(--purple) 62%, transparent);
  box-shadow: 0 0 18px rgba(123, 97, 255, 0.8);
  animation: lineDrop 2.8s linear infinite;
}

@keyframes lineDrop {
  from {
    transform: translateY(-90px);
  }

  to {
    transform: translateY(210px);
  }
}

.craft-copy h2,
.section-heading h2 {
  margin: 0 0 28px;
  font-family: var(--font-cn);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: 0;
}

.craft-section {
  width: min(92%, var(--max));
  min-height: 76dvh;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(240px, 0.34fr) minmax(0, 0.66fr);
  gap: clamp(28px, 7vw, 96px);
  align-items: center;
  padding: 90px 0;
}

.craft-media {
  position: relative;
  overflow: hidden;
  width: min(100%, 520px);
  justify-self: start;
  border: 1px solid var(--soft-line);
  background:
    radial-gradient(circle at 74% 14%, rgba(123, 97, 255, 0.22), transparent 40%),
    #050506;
  box-shadow: 0 0 42px rgba(123, 97, 255, 0.16);
}

.craft-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(to right, rgba(5, 5, 6, 0.08), transparent 42%, rgba(123, 97, 255, 0.12)),
    linear-gradient(to top, rgba(0, 0, 0, 0.48), transparent 52%);
}

.craft-media img {
  width: 100%;
  aspect-ratio: 16 / 11;
  object-fit: cover;
  object-position: 50% 8%;
}

.craft-copy h2 {
  max-width: 760px;
  font-size: clamp(28px, 4vw, 52px);
}

.craft-copy p {
  max-width: 720px;
  color: var(--white);
  letter-spacing: 0;
}

.about-section {
  width: min(92%, var(--max));
  margin: 0 auto;
  padding: clamp(58px, 8vw, 108px) 0;
}

.about-card {
  position: relative;
  overflow: hidden;
  max-width: 100%;
  margin: 0 auto 0 0;
  padding: clamp(36px, 5vw, 68px);
  border: 1px solid rgba(168, 168, 179, 0.22);
  background:
    linear-gradient(132deg, transparent 0 68%, rgba(123, 97, 255, 0.28) 68.6%, rgba(255, 255, 255, 0.16) 69.2%, rgba(123, 97, 255, 0.36) 69.8%, transparent 73%),
    radial-gradient(circle at 82% 18%, rgba(123, 97, 255, 0.26), transparent 34%),
    linear-gradient(145deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.018)),
    var(--charcoal);
  box-shadow: 0 0 48px rgba(123, 97, 255, 0.12);
  text-align: left;
  max-width: min(100%, 1120px);
}

.about-card::before,
.about-card::after {
  content: "";
  position: absolute;
  pointer-events: none;
}

.about-card::before {
  inset: 18px;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.about-card::after {
  right: clamp(20px, 4vw, 58px);
  bottom: clamp(20px, 4vw, 52px);
  width: clamp(86px, 12vw, 170px);
  height: 4px;
  background: linear-gradient(90deg, transparent, rgba(123, 97, 255, 0.92), rgba(255, 255, 255, 0.72));
  box-shadow: 0 0 26px rgba(123, 97, 255, 0.58);
}

.about-card > * {
  position: relative;
  z-index: 1;
}

.about-team span {
  display: flex;
  align-items: center;
  gap: 16px;
  margin: 0 0 24px;
  color: var(--white);
  font-family: var(--font-cn);
  font-size: clamp(22px, 1.8vw, 28px);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: 0;
}

.about-team span::before {
  content: "";
  display: block;
  width: 48px;
  height: 1px;
  background: linear-gradient(90deg, rgba(123, 97, 255, 0.95), rgba(255, 255, 255, 0.48));
  box-shadow: 0 0 14px rgba(123, 97, 255, 0.48);
}

.about-team h3 {
  margin: 0 0 18px;
  max-width: 680px;
  font-size: clamp(30px, 3.5vw, 50px);
  font-family: var(--font-cn);
  font-weight: 700;
  line-height: 1.16;
  letter-spacing: 0;
}

.about-team p {
  margin: 0;
  max-width: 760px;
  color: var(--white);
  font-size: clamp(14px, 1.15vw, 17px);
  line-height: 1.95;
}

.about-team {
  display: grid;
  gap: 26px;
  padding-top: 8px;
}

.about-team > div {
  padding-bottom: 24px;
  border-bottom: 1px solid rgba(168, 168, 179, 0.18);
}

.about-team > div:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.matrix-section,
.projects-section {
  width: min(92%, var(--max));
  margin: 0 auto;
  padding: clamp(78px, 10vw, 140px) 0;
}

.section-heading {
  max-width: 860px;
  margin: 0 0 44px;
  text-align: left;
}

.section-heading h2 {
  font-size: clamp(32px, 5vw, 68px);
  font-family: var(--font-cn);
  font-weight: 700;
  letter-spacing: 0;
  text-wrap: balance;
}

.section-heading p {
  margin: 0;
  color: var(--white);
  font-size: clamp(14px, 1.4vw, 18px);
  line-height: 1.9;
  letter-spacing: 0;
}

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

.matrix-card {
  position: relative;
  overflow: hidden;
  min-height: 245px;
  padding: clamp(22px, 3vw, 34px);
  border: 1px solid var(--soft-line);
  background:
    linear-gradient(145deg, rgba(168, 168, 179, 0.1), rgba(255, 255, 255, 0.025)),
    var(--charcoal);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.matrix-card h3 {
  margin: 0 0 14px;
  font-size: clamp(21px, 1.65vw, 28px);
  font-family: var(--font-cn);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: 0;
  text-wrap: balance;
  word-break: keep-all;
}

.matrix-card p {
  margin: 0;
  color: var(--white);
  line-height: 1.75;
  letter-spacing: 0;
}

.matrix-card-accent {
  background:
    linear-gradient(135deg, rgba(123, 97, 255, 0.42), rgba(255, 255, 255, 0.04)),
    var(--charcoal);
  border-color: rgba(123, 97, 255, 0.72);
  box-shadow: inset 0 0 0 1px rgba(123, 97, 255, 0.14), 0 0 36px rgba(123, 97, 255, 0.14);
}

.projects-section {
  padding-top: clamp(46px, 7vw, 96px);
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.project-card {
  min-height: 300px;
  padding: clamp(24px, 3vw, 34px);
  border: 1px solid var(--soft-line);
  background:
    linear-gradient(150deg, rgba(168, 168, 179, 0.1), rgba(255, 255, 255, 0.025)),
    var(--charcoal);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.project-card-featured {
  background:
    radial-gradient(circle at 18% 12%, rgba(123, 97, 255, 0.4), transparent 38%),
    linear-gradient(145deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.025)),
    var(--charcoal);
  border-color: rgba(123, 97, 255, 0.62);
  box-shadow: 0 0 34px rgba(123, 97, 255, 0.13);
}

.project-card-featured h3 {
  font-size: clamp(30px, 3.2vw, 46px);
}

.project-meta,
.project-foot {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  justify-content: space-between;
}

.project-meta span,
.project-foot span,
.project-foot a {
  color: var(--white);
  font-family: var(--font-en);
  font-weight: 500;
  font-size: 11px;
  line-height: 1.7;
  letter-spacing: 0.12em;
  opacity: 0.78;
}

.project-meta span:first-child {
  color: var(--label-strong);
  opacity: 1;
}

.project-card h3 {
  margin: auto 0 18px;
  max-width: 560px;
  font-size: clamp(26px, 2.45vw, 38px);
  font-family: var(--font-cn);
  font-weight: 700;
  line-height: 1.16;
  letter-spacing: 0;
  text-wrap: balance;
  word-break: keep-all;
}

.project-card p {
  margin: 0 0 30px;
  max-width: 620px;
  color: var(--white);
  line-height: 1.85;
  letter-spacing: 0;
}

.project-foot {
  padding-top: 18px;
  border-top: 1px solid var(--soft-line);
  justify-content: flex-start;
}

.project-foot a {
  opacity: 1;
  transition: color 220ms ease;
}

.project-foot a:hover {
  color: var(--white);
}

[data-reveal] {
  opacity: 0;
  transform: translateY(42px);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
  transition:
    opacity 850ms cubic-bezier(0.16, 1, 0.3, 1),
    transform 850ms cubic-bezier(0.16, 1, 0.3, 1);
}

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

  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 820px) {
  .site-header {
    height: var(--header-h);
  }

  .header-inner {
    width: calc(100% - 28px);
    grid-template-columns: auto 1fr auto;
    gap: 18px;
  }

  .brand-link {
    width: 172px;
    height: 42px;
  }

  .nav {
    gap: 14px;
    min-height: 38px;
    padding: 0 18px;
    font-size: 13px;
  }

  .nav a:nth-child(5) {
    display: none;
  }

  .header-actions {
    gap: 10px;
  }

  .lang-toggle {
    font-size: 13px;
  }

  .header-cta {
    min-width: 74px;
    height: 34px;
    padding: 0 18px;
  }

  .hero-logo {
    width: min(86vw, 560px);
  }

  .hero-content p,
  .craft-copy p,
  .section-heading p {
    letter-spacing: 0;
  }

  .craft-section {
    width: calc(100% - 28px);
    grid-template-columns: 1fr;
    min-height: auto;
    padding: 72px 0;
  }

  .craft-media {
    width: min(100%, 520px);
    justify-self: center;
  }

  .about-section {
    width: calc(100% - 28px);
    padding: 64px 0;
  }

  .about-card {
    padding: 40px 22px 54px;
  }

  .about-team h3 {
    font-size: clamp(30px, 9vw, 44px);
  }

  .about-card::before {
    inset: 12px;
  }

  .craft-media img {
    aspect-ratio: 16 / 10;
  }

  .matrix-section,
  .projects-section {
    width: calc(100% - 28px);
    padding: 76px 0;
  }

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

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

  .project-card {
    min-height: 330px;
  }

}

@media (max-width: 540px) {
  .header-inner {
    grid-template-columns: auto 1fr;
  }

  .nav,
  .lang-toggle {
    display: none;
  }

  .brand-link {
    width: 160px;
  }

  .hero-content {
    padding-left: 16px;
    padding-right: 16px;
  }

  .pill-link {
    width: min(100%, 230px);
    padding: 0 20px;
  }
}