:root {
  color-scheme: light;
  --bg: #fff;
  --ink: #090a0d;
  --muted: #777b84;
  --line: rgba(9,10,13,.16);
  --soft: rgba(9,10,13,.055);
  --radius: 0px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(9,10,13,.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(9,10,13,.018) 1px, transparent 1px);
  background-size: 72px 72px;
  opacity: .24;
}

.noise {
  position: fixed;
  inset: 0;
  opacity: .055;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 240 240' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.65'/%3E%3C/svg%3E");
}

.cursor-glow {
  display: none;
  position: fixed;
  left: 0;
  top: 0;
  z-index: 1;
  width: clamp(220px, 28vw, 420px);
  height: clamp(220px, 28vw, 420px);
  border-radius: 50%;
  pointer-events: none;
  opacity: 0;
  background:
    radial-gradient(circle at 50% 50%,
      rgba(9,10,13,.105) 0%,
      rgba(9,10,13,.055) 23%,
      rgba(9,10,13,.018) 48%,
      transparent 72%);
  filter: blur(18px);
  mix-blend-mode: multiply;
  transform: translate3d(-50%, -50%, 0) scale(.92);
  transition: opacity .35s ease;
  will-change: transform, opacity;
}
.cursor-glow.is-active { opacity: .62; }
@media (pointer: fine) and (prefers-reduced-motion: no-preference) {
  .cursor-glow { display: block; }
}
@media (pointer: coarse), (prefers-reduced-motion: reduce) {
  .cursor-glow { display: none; }
}
a { color: inherit; text-decoration: none; }

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px clamp(24px, 5vw, 86px);
  background: rgba(255,255,255,.78);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(9,10,13,.08);
}
.brand, .nav-links, .nav-actions { display: flex; align-items: center; gap: 18px; }
.brand { font-weight: 900; letter-spacing: -.04em; }
.brand-logo {
  width: 42px;
  height: 42px;
  object-fit: cover;
  display: block;
  filter: none;
}
.nav-links { color: #111318; font-size: 14px; }
.nav-links a { opacity: .78; }
.nav-links a:hover { opacity: 1; }
.nav-join {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 0 15px;
  border: 1px solid rgba(9,10,13,.22);
  background: rgba(255,255,255,.58);
  font-size: 13px;
  font-weight: 950;
  letter-spacing: .02em;
  text-transform: uppercase;
  transition: background .2s ease, color .2s ease, border-color .2s ease, transform .2s ease;
}
.nav-join:hover,
.nav-join.is-active {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--bg);
  transform: translateY(-1px);
}

.section-shell {
  width: min(1280px, calc(100vw - 40px));
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.hero {
  width: 100%;
  min-height: 100vh;
  display: grid;
  place-items: center;
  overflow: hidden;
}

#tencentField {
  position: absolute;
  inset: 0;
  z-index: auto;
  overflow: hidden;
  background: #fff;
}
.micro-word-canvas {
  position: absolute;
  inset: -2vh -6vw auto -6vw;
  width: 112vw;
  height: 70vh;
  min-height: 560px;
  opacity: .94;
  will-change: transform;
}
.ambient-word {
  position: absolute;
  left: 0;
  top: 0;
  color: rgba(9,10,13,.3);
  font-size: var(--fs, 10px);
  font-weight: 800;
  letter-spacing: .06em;
  text-transform: uppercase;
  white-space: nowrap;
  transform: translate3d(-999px, -999px, 0);
  will-change: transform, opacity;
  pointer-events: none;
}
.ambient-word.strong { color: rgba(9,10,13,.46); font-weight: 950; }


.flow-lines {
  position: absolute;
  inset: 0;
  opacity: .32;
  pointer-events: none;
  background:
    repeating-linear-gradient(
      0deg,
      transparent 0 46px,
      rgba(9,10,13,.024) 47px,
      transparent 49px
    );
  mask-image: linear-gradient(90deg, transparent, black 16%, black 84%, transparent);
  transform: translate3d(0, 0, 0);
  animation: flowDrift 18s linear infinite;
}
.flow-lines::before,
.flow-lines::after {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    8deg,
    transparent 0 88px,
    rgba(9,10,13,.02) 89px,
    transparent 91px
  );
}
.flow-lines::after {
  background: repeating-linear-gradient(
    -7deg,
    transparent 0 118px,
    rgba(9,10,13,.016) 119px,
    transparent 121px
  );
  animation: flowDriftReverse 24s linear infinite;
}
@keyframes flowDrift {
  from { background-position: 0 0; transform: translate3d(-2%, 0, 0); }
  to { background-position: 0 240px; transform: translate3d(2%, 0, 0); }
}
@keyframes flowDriftReverse {
  from { background-position: 0 0; transform: translate3d(2%, 0, 0); }
  to { background-position: 0 -260px; transform: translate3d(-2%, 0, 0); }
}

.bottom-flow {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  height: 44vh;
  pointer-events: none;
  overflow: hidden;
  opacity: 1;
  mask-image: linear-gradient(180deg, transparent 0%, black 18%, black 92%, transparent 100%);
}
.bottom-flow::before {
  content: none;
}
.bottom-flow-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 1;
}
.flow-word {
  position: absolute;
  left: 0;
  top: 0;
  color: rgba(9,10,13,.22);
  font-size: var(--fs, 9px);
  font-weight: 850;
  letter-spacing: .08em;
  text-transform: uppercase;
  white-space: nowrap;
  transform: translate3d(-999px,-999px,0);
  will-change: transform, opacity;
}
.flow-word.strong { color: rgba(9,10,13,.42); font-weight: 950; }
.flow-thread {
  position: absolute;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(9,10,13,.11), transparent);
  transform-origin: center;
  opacity: .26;
}
@keyframes bottomCurrent {
  from { background-position: 0 0, 0 0; transform: translate3d(-1.5%, 0, 0); }
  to { background-position: 0 180px, 0 -220px; transform: translate3d(1.5%, 0, 0); }
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    radial-gradient(circle at 50% 55%, rgba(255,255,255,.18) 0 10rem, rgba(255,255,255,.18) 26rem, transparent 100%);
}
.hero-center {
  position: relative;
  z-index: 2;
  text-align: center;
  transform: translateY(9vh);
}
h1 {
  margin: 0;
  font-size: clamp(54px, 8.5vw, 128px);
  line-height: .86;
  letter-spacing: -.055em;
  word-spacing: .02em;
  font-weight: 950;
  color: var(--ink);
  text-transform: uppercase;
}
.hero-center h1 { text-transform: none; }
.hero-subtitle {
  margin: 18px 0 0;
  color: rgba(9,10,13,.56);
  font-size: clamp(16px, 2.2vw, 28px);
  font-weight: 850;
  letter-spacing: .18em;
  text-transform: none;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  font-weight: 800;
  border: 1px solid var(--ink);
  background: transparent;
  color: var(--ink);
  transition: background .2s ease, color .2s ease;
}
.btn:hover { background: var(--ink); color: var(--bg); }
.btn-primary { background: var(--ink); color: var(--bg); }
.btn-secondary { background: transparent; color: var(--ink); }

.manifesto { padding: 20px 0 100px; }
.manifesto p {
  margin: 0;
  padding: clamp(26px, 5vw, 52px);
  border: 1px solid var(--line);
  background: rgba(255,255,255,.38);
  color: #15171c;
  font-size: clamp(24px, 4.2vw, 52px);
  line-height: 1.14;
  letter-spacing: -.055em;
}
.section-heading { margin: 0 0 28px; }
.section-heading span { color: #111318; font-size: 13px; font-weight: 950; letter-spacing: .16em; text-transform: uppercase; }
.section-heading h2 {
  max-width: 860px;
  margin: 12px 0 0;
  font-size: clamp(34px, 5vw, 68px);
  line-height: .98;
  letter-spacing: -.065em;
}
.grid { display: grid; }
.cards-grid { grid-template-columns: repeat(3, 1fr); gap: 16px; padding-bottom: 110px; }
.scope-card, .project-card, .join-copy, .roles {
  border: 1px solid var(--line);
  background: rgba(255,255,255,.32);
}
.scope-card { min-height: 230px; padding: 24px; transition: border-color .2s ease, background .2s ease; }
.scope-card:hover { border-color: rgba(9,10,13,.55); background: rgba(255,255,255,.55); }
.scope-card span { color: rgba(9,10,13,.52); font-size: 13px; font-weight: 950; }
.scope-card h3 { margin: 44px 0 12px; font-size: 25px; letter-spacing: -.04em; }
.scope-card p { margin: 0; color: #5f646d; line-height: 1.7; }
.project-section { padding-bottom: 110px; }
.project-card {
  display: flex; align-items: flex-end; justify-content: space-between; gap: 28px;
  padding: clamp(26px, 5vw, 52px);
  background: rgba(255,255,255,.42);
}
.project-label { color: var(--ink) !important; font-size: 13px; font-weight: 950; letter-spacing: .16em; text-transform: uppercase; }
.project-card h3 { margin: 0; max-width: 780px; font-size: clamp(28px, 4vw, 52px); line-height: 1.02; letter-spacing: -.055em; }
.project-card p { color: #5f646d; line-height: 1.8; max-width: 760px; }
.join-section { padding-bottom: 90px; }
.join-grid { display: grid; grid-template-columns: 1fr .9fr; gap: 16px; }
.join-copy, .roles { padding: clamp(26px, 4vw, 42px); }
.join-copy p { color: #15171c; font-size: 22px; line-height: 1.65; margin: 0 0 28px; }
.roles { display: flex; flex-wrap: wrap; align-content: center; gap: 12px; }
.roles span {
  border: 1px solid rgba(9,10,13,.16);
  background: rgba(255,255,255,.38);
  padding: 12px 16px;
  font-weight: 850;
}
.footer {
  position: relative; z-index: 1;
  display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap;
  color: #5f646d;
  padding: 34px clamp(20px, 4vw, 72px);
  border-top: 1px solid rgba(9,10,13,.1);
}

.join-page {
  --bg: #fff;
  --ink: #080a0c;
  --line: rgba(8,10,12,.18);
  background: var(--bg);
}
.join-page .nav {
  background: rgba(255,255,255,.86);
}
.join-page .nav-join:hover,
.join-page .nav-join.is-active {
  transform: none;
}
.join-main {
  height: 100vh;
  overflow: hidden;
}
.join-hero {
  position: relative;
  height: 100vh;
  min-height: 100vh;
  overflow: hidden;
  display: grid;
  align-items: end;
  padding: clamp(118px, 16vh, 168px) clamp(20px, 5vw, 86px) clamp(34px, 7vh, 72px);
}
.join-hero::after {
  content: "";
  position: absolute;
  z-index: 1;
  left: 0;
  right: 0;
  bottom: 0;
  height: 62vh;
  pointer-events: none;
  background: linear-gradient(180deg, transparent 0%, rgba(255,255,255,.42) 30%, rgba(255,255,255,.84) 100%);
}
.join-grid-overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}
.join-grid-overlay {
  z-index: 1;
  opacity: .5;
  background-image:
    linear-gradient(rgba(8,10,12,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(8,10,12,.05) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(180deg, transparent, black 22%, black 86%, transparent);
}
.join-static-map {
  position: absolute;
  z-index: 1;
  inset: 90px clamp(20px, 5vw, 86px) 90px;
  pointer-events: none;
  overflow: hidden;
  border: 1px solid rgba(8,10,12,.14);
  background:
    linear-gradient(90deg, transparent 0 24%, rgba(8,10,12,.08) 24% calc(24% + 1px), transparent calc(24% + 1px) 100%),
    linear-gradient(90deg, transparent 0 62%, rgba(8,10,12,.08) 62% calc(62% + 1px), transparent calc(62% + 1px) 100%),
    linear-gradient(180deg, transparent 0 38%, rgba(8,10,12,.08) 38% calc(38% + 1px), transparent calc(38% + 1px) 100%);
}
.map-axis,
.map-label {
  position: absolute;
  display: block;
}
.map-axis {
  height: 1px;
  background: rgba(8,10,12,.42);
  transform-origin: left center;
}
.map-axis::after {
  content: "";
  position: absolute;
  left: -72px;
  top: -1px;
  width: 72px;
  height: 3px;
  background: linear-gradient(90deg, transparent, rgba(8,10,12,.72), transparent);
  animation: mapSignal 6.2s cubic-bezier(.45, 0, .2, 1) infinite;
}
.map-axis-a {
  left: 5%;
  top: 24%;
  width: 54%;
  transform: rotate(-7deg);
}
.map-axis-b {
  left: 18%;
  top: 52%;
  width: 62%;
  transform: rotate(6deg);
}
.map-axis-c {
  left: 52%;
  top: 16%;
  width: 34%;
  transform: rotate(42deg);
}
.map-axis-b::after { animation-delay: 1.5s; }
.map-axis-c::after { animation-delay: 3s; }
.map-label {
  color: rgba(8,10,12,.46);
  font-size: 10px;
  font-weight: 950;
  letter-spacing: .18em;
  text-transform: uppercase;
}
.label-a { left: 6%; top: 28%; }
.label-b { left: 50%; top: 12%; }
.label-c { right: 5%; bottom: 18%; }
@keyframes mapSignal {
  0% { transform: translateX(0); opacity: 0; }
  14% { opacity: .55; }
  52% { opacity: .55; }
  72%, 100% { transform: translateX(70vw); opacity: 0; }
}
.join-content {
  position: relative;
  z-index: 2;
  width: min(980px, 100%);
}
.join-statement {
  max-width: 900px;
}
.join-kicker {
  margin: 0 0 18px;
  font-size: 13px;
  font-weight: 950;
  letter-spacing: .16em;
  text-transform: uppercase;
  text-shadow: 0 0 18px rgba(255,255,255,.92), 0 0 4px rgba(255,255,255,.92);
}
.join-statement h1 {
  max-width: 760px;
  font-size: clamp(70px, 13vw, 178px);
  line-height: .78;
  letter-spacing: -.07em;
}
.join-lede {
  max-width: 650px;
  margin: 30px 0 0;
  color: #282d34;
  font-size: clamp(18px, 2vw, 24px);
  line-height: 1.42;
  letter-spacing: -.025em;
  text-shadow: 0 0 18px rgba(255,255,255,.94), 0 0 4px rgba(255,255,255,.94);
}
.join-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}
.qq-card {
  width: min(640px, 100%);
  margin-top: 28px;
  display: grid;
  grid-template-columns: minmax(98px, auto) minmax(0, 1fr) auto;
  align-items: center;
  gap: clamp(14px, 2vw, 24px);
  border-top: 1px solid rgba(8,10,12,.26);
  border-bottom: 1px solid rgba(8,10,12,.26);
  background: rgba(255,255,255,.62);
  padding: 18px 0;
}
.qq-label {
  display: block;
  color: #2f363d;
  font-size: 12px;
  font-weight: 950;
  letter-spacing: .18em;
  text-transform: uppercase;
}
.qq-card strong {
  display: block;
  margin: 0;
  font-size: clamp(32px, 4vw, 48px);
  line-height: 1;
  letter-spacing: -.045em;
}
.qq-copy {
  min-width: 156px;
}
.join-radar {
  position: absolute;
  z-index: 2;
  left: clamp(20px, 5vw, 86px);
  right: clamp(20px, 5vw, 86px);
  bottom: 18px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  color: rgba(8,10,12,.58);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: .18em;
  text-transform: uppercase;
}

@media (max-width: 980px) {
  .cards-grid { grid-template-columns: repeat(2, 1fr); }
  .join-grid, .project-card { grid-template-columns: 1fr; display: grid; }
  .join-content { grid-template-columns: 1fr; }
  .qq-card { max-width: none; }
}
@media (max-width: 640px) {
  .nav-links { display: none; }
  .nav { padding: 18px 20px; }
  .brand { gap: 10px; }
  .brand-logo { width: 34px; height: 34px; }
  .brand span { font-size: 14px; }
  .nav-join { min-height: 34px; padding: 0 12px; font-size: 11px; }
  .cards-grid { grid-template-columns: 1fr; }
  h1 { font-size: clamp(42px, 14vw, 74px); }
  .micro-word-canvas { width: 160vw; left: -30vw; }
  .join-main { height: 100svh; }
  .join-hero { height: 100svh; min-height: 100svh; padding: 104px 20px 72px; }
  .join-hero::after { height: 78vh; }
  .join-static-map {
    inset: 72px 20px 52px;
  }
  .map-axis-a { width: 78%; }
  .map-axis-b { left: 8%; width: 76%; }
  .map-axis-c { left: 46%; width: 44%; }
  .join-statement h1 { font-size: clamp(62px, 21vw, 100px); }
  .join-lede { font-size: 17px; line-height: 1.5; }
  .qq-card {
    grid-template-columns: 1fr;
    gap: 12px;
    margin-top: 24px;
    padding: 16px 0;
  }
  .qq-copy {
    width: 100%;
    min-width: 0;
  }
  .join-radar {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    font-size: 9px;
    bottom: 14px;
  }
  .qq-card strong { font-size: clamp(32px, 11vw, 46px); }
}

@media (prefers-reduced-motion: reduce) {
  .flow-lines,
  .flow-lines::after {
    animation: none !important;
  }
  .map-axis::after {
    animation: none !important;
  }
  .ambient-word,
  .flow-word,
  .micro-word-canvas {
    will-change: auto;
  }
}