@charset "UTF-8";
:root {
  color-scheme: dark;
  --bg: #090b0d;
  --surface: #101315;
  --text: #f0f2f2;
  --secondary: #a0a7aa;
  --muted: #757e83;
  --line: #ffffff16;
  --accent: #9ae7d2;
  --sans:
    -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", sans-serif;
  --mono: ui-monospace, SFMono-Regular, Consolas, monospace;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 100px;
}
body {
  margin: 0;
  overflow-x: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}
h1,
h2,
h3,
p {
  margin: 0;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  font: inherit;
  color: inherit;
  cursor: pointer;
}
img {
  max-width: 100%;
  height: auto;
}
button,
a,
summary {
  -webkit-tap-highlight-color: transparent;
}
button:focus-visible,
a:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 6px;
}
[hidden] {
  display: none !important;
}
::selection {
  background: #9ae7d2;
  color: #091310;
}
.shell {
  width: min(1200px, calc(100% - 112px));
  margin-inline: auto;
}
.mono {
  font-family: var(--mono);
}
.skip-link {
  position: fixed;
  z-index: 30;
  top: -80px;
  left: 20px;
  padding: 14px 18px;
  background: var(--accent);
  color: #091310;
}
.skip-link:focus {
  top: 12px;
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: #090b0ded;
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  height: 84px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
}
.wordmark {
  font-size: 29px;
  letter-spacing: -1.5px;
  font-weight: 650;
  line-height: 1;
}
.wordmark span {
  color: var(--accent);
  font-weight: 400;
  margin-left: 3px;
}
nav {
  display: flex;
  align-items: center;
  gap: 34px;
  font-size: 14px;
  color: #aeb5b8;
}
nav > a {
  padding-block: 10px;
  transition: color 0.2s;
}
nav > a:hover {
  color: white;
}
.header-contact {
  margin-left: 8px;
  color: #f2f4f3;
  display: flex;
  align-items: center;
  gap: 25px;
}
.header-contact span {
  color: var(--accent);
}
.hero {
  position: relative;
  padding-top: 84px;
  isolation: isolate;
}
.hero-field {
  position: absolute;
  z-index: -1;
  inset: 15px -20px 25% 30%;
  overflow: hidden;
  pointer-events: none;
  opacity: 0.7;
  background-image:
    radial-gradient(
      ellipse at var(--spot-x, 70%) var(--spot-y, 45%),
      #a4ffe40c,
      transparent 60%
    ),
    linear-gradient(#c2ffe808 1px, transparent 1px),
    linear-gradient(90deg, #c2ffe808 1px, transparent 1px);
  background-size:
    auto,
    72px 72px,
    72px 72px;
  mask-image: linear-gradient(90deg, transparent, #000 65%, transparent);
  -webkit-mask-image: linear-gradient(
    90deg,
    transparent,
    #000 65%,
    transparent
  );
}
.field-scan {
  position: absolute;
  left: 0;
  right: 0;
  height: 1px;
  top: 0;
  background: linear-gradient(90deg, transparent, #a3e8d45c, transparent);
  animation: field-scan 12s linear infinite;
}
.hero-kicker {
  display: flex;
  align-items: center;
  gap: 12px;
  font: 12px/1.8 var(--mono);
  letter-spacing: 0.12em;
  color: #a2adaa;
}
.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 16px #9ae7d235;
}
.hero h1 {
  font-size: clamp(48px, 5.8vw, 80px);
  font-weight: 550;
  line-height: 1.25;
  letter-spacing: -0.045em;
  margin-top: 29px;
}
.hero-accent {
  color: var(--accent);
}
.hero-bottom {
  display: flex;
  justify-content: space-between;
  gap: 44px;
  align-items: end;
  margin-top: 33px;
}
.hero-intro > p {
  font-size: 16px;
  line-height: 1.9;
  color: #a1aaad;
}
.mobile-break {
  display: none;
}
.hero-actions {
  display: flex;
  align-items: center;
  gap: 29px;
  margin-top: 30px;
}
.primary-button {
  display: inline-flex;
  align-items: center;
  gap: 36px;
  background: #e4eee9;
  color: #111815;
  padding: 15px 20px;
  border: 1px solid #e4eee9;
  font-size: 14px;
  border-radius: 4px;
  transition:
    background 0.2s,
    transform 0.2s;
}
.primary-button:hover {
  background: var(--accent);
  transform: translateY(-2px);
}
.primary-button > span {
  font-size: 18px;
}
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 17px;
  font-size: 14px;
  color: #d1d8d7;
  padding-block: 12px;
}
.text-link > span {
  color: #879490;
  transition: transform 0.2s;
}
.text-link:hover > span {
  transform: translate(3px, -3px);
  color: var(--accent);
}
.hero-note {
  padding: 0 0 5px 25px;
  border-left: 1px solid #8eaca62b;
}
.hero-note > span {
  font-size: 12px;
  letter-spacing: 0.055em;
  color: #717f7d;
}
.hero-note p {
  font-size: 15px;
  line-height: 1.85;
  margin-top: 13px;
  color: #a9b4b1;
}
.hero-index {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1.55fr 1.55fr;
  align-items: center;
  gap: 30px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin-top: 68px;
}
.index-label {
  font-size: 12px;
  letter-spacing: 0.07em;
  color: #65716e;
}
.hero-index > a {
  position: relative;
  display: flex;
  align-items: center;
  gap: 15px;
  padding-block: 24px;
  font-size: 15px;
  min-width: 0;
}
.hero-index > a::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width 0.35s;
}
.hero-index > a:hover::after {
  width: 100%;
}
.hero-index > a > span:last-child {
  margin-left: auto;
  color: #687c76;
}
.index-detail {
  color: #7c8884;
  font-size: 12px;
}
.index-state {
  display: flex;
  align-items: center;
  gap: 6px;
  color: #a2b8ac;
  font-size: 12px;
  white-space: nowrap;
}
.index-state i,
.product-state i {
  height: 4px;
  width: 4px;
  flex: none;
  border-radius: 50%;
  background: #96bea5;
}
.index-state.developing {
  color: #9aabc3;
}
.developing i {
  background: #88a3cb;
}
.work-section {
  padding-top: 100px;
}
.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 30px;
  margin-bottom: 33px;
}
.eyebrow {
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: 0.1em;
  color: #7d8b87;
  margin-bottom: 16px;
}
h2 {
  font-size: clamp(29px, 3vw, 40px);
  line-height: 1.35;
  letter-spacing: -0.025em;
  font-weight: 500;
}
.section-heading > p {
  color: #808b87;
  font-size: 14px;
  padding-bottom: 4px;
}
.product-grid {
  display: grid;
  grid-template-columns: 1.08fr 1fr;
  gap: 32px;
}
.product {
  min-width: 0;
  scroll-margin-top: 110px;
}
.product-link {
  display: block;
}
.product-cover {
  position: relative;
  aspect-ratio: 1.5;
  min-height: 0;
  overflow: hidden;
  border-radius: 7px;
  transition:
    transform 0.5s cubic-bezier(0.2, 0.7, 0.2, 1),
    box-shadow 0.5s;
  isolation: isolate;
}
.product-link:hover .product-cover {
  transform: translateY(-5px);
  box-shadow: 0 20px 70px #0004;
}
.cover-topline {
  position: absolute;
  top: 23px;
  left: 25px;
  right: 25px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 2;
  gap: 15px;
}
.cover-category,
.cover-number {
  font-size: 12px;
  letter-spacing: 0.055em;
}
.cover-bottomline {
  position: absolute;
  bottom: 21px;
  left: 25px;
  right: 25px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  font-size: 12px;
  letter-spacing: 0.015em;
}
.huahua-cover {
  background: #e4e9e3;
  color: #23352a;
}
.huahua-cover .cover-topline,
.huahua-cover .cover-bottomline {
  color: #69776e;
}
.huahua-brand {
  position: absolute;
  top: 24%;
  left: 12%;
  right: 10%;
  display: flex;
  align-items: center;
  gap: 21px;
}
.huahua-brand img {
  width: 94px;
  height: 94px;
  border-radius: 23%;
  box-shadow: 0 9px 28px #3850350f;
  transition: transform 0.6s;
}
.product-link:hover .huahua-brand img {
  transform: rotate(-4deg);
}
.huahua-brand strong {
  display: block;
  font-size: 35px;
  font-weight: 560;
  letter-spacing: -1.4px;
}
.huahua-brand > div > span {
  display: block;
  margin-top: 9px;
  font-size: 14px;
  color: #6a766c;
}
.agent-flow {
  position: absolute;
  left: 12%;
  right: 12%;
  bottom: 21%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.flow-node {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  white-space: nowrap;
  color: #607266;
}
.flow-symbol {
  width: 25px;
  height: 25px;
  border: 1px solid #9dac9b66;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font: 12px var(--mono);
  color: #69836d;
}
.flow-connector {
  position: relative;
  flex: 1;
  height: 1px;
  background: #80977c4d;
  overflow: hidden;
  min-width: 12px;
}
.flow-connector::after {
  content: "";
  position: absolute;
  inset: 0;
  width: 45%;
  background: #45694a;
  animation: flow-travel 5s ease-in-out infinite;
}
.flow-connector:nth-of-type(2)::after {
  animation-delay: 0.6s;
}
.vector-cover {
  background: #f6f8fc;
  color: #657186;
}
.vector-logo {
  position: relative;
  overflow: hidden;
  width: 100px;
  aspect-ratio: 980/570;
  mix-blend-mode: multiply;
}
.vector-logo img {
  position: absolute;
  left: -14.2857%;
  top: -61.4035%;
  width: 127.9592%;
  max-width: none;
  height: auto;
}
.vector-cover .cover-topline {
  top: 12px;
}
.drawing-preview {
  position: absolute;
  left: 4%;
  top: 18%;
  width: 92%;
  height: 74%;
  object-fit: contain;
  mix-blend-mode: multiply;
  transition: transform 0.65s cubic-bezier(0.2, 0.7, 0.2, 1);
}
.product-link:hover .drawing-preview {
  transform: scale(1.04);
}
.product-title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  margin-top: 25px;
}
.product-title h3 {
  font-size: 25px;
  font-weight: 540;
  letter-spacing: -0.025em;
}
.product-title h3 > span {
  font-size: 14px;
  font-weight: 400;
  color: #7d8788;
  margin-left: 10px;
  letter-spacing: 0;
}
.product-arrow {
  font-size: 26px;
  color: #a3b1ad;
  transition:
    transform 0.2s,
    color 0.2s;
}
.product-link:hover .product-arrow {
  transform: translate(3px, -3px);
  color: var(--accent);
}
.product-description {
  font-size: 16px;
  line-height: 1.85;
  color: #929e9a;
  margin-top: 12px;
}
.product-meta {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-top: 18px;
  font-size: 12px;
  color: #6f7d78;
}
.product-state {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 14px;
  color: #9bb5a5;
}
.product-state.developing {
  color: #9aaccc;
}
.more-work {
  margin-top: 41px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.more-work summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 25px;
  padding: 25px 0;
  cursor: pointer;
  list-style: none;
  font-size: 14px;
  color: #a4afab;
}
.more-work summary::-webkit-details-marker {
  display: none;
}
.more-work summary > .mono {
  font-size: 12px;
  letter-spacing: 0.03em;
  color: #6b7873;
}
.more-work summary i {
  display: inline-block;
  font-style: normal;
  margin-left: 24px;
  font-size: 18px;
  transition: transform 0.2s;
}
.more-work[open] summary i {
  transform: rotate(45deg);
}
.project-list {
  padding-bottom: 22px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 35px;
}
.project-list a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 15px;
  padding: 17px 0;
  border-top: 1px solid #ffffff0a;
  font-size: 14px;
  color: #9facaa;
}
.project-list a > span:first-child {
  overflow-wrap: anywhere;
}
.project-list a > span:last-child {
  font-size: 12px;
  color: #697b73;
  white-space: nowrap;
}
.project-list a:hover {
  color: var(--accent);
}
.collaborate-section {
  display: grid;
  grid-template-columns: 1.08fr 1fr;
  gap: 75px;
  padding-top: 118px;
  padding-bottom: 112px;
}
.collaborate-intro h2 {
  font-size: clamp(28px, 3vw, 40px);
  line-height: 1.5;
}
.collaborate-description {
  font-size: 16px;
  line-height: 1.9;
  color: #8f9c97;
  margin-top: 22px;
}
.collaboration-label {
  font-size: 12px;
  line-height: 1.8;
  letter-spacing: 0.01em;
  color: #687e74;
  margin-top: 27px;
}
.collaboration-steps {
  padding-top: 11px;
}
.collaboration-step {
  display: flex;
  align-items: start;
  gap: 24px;
  padding: 26px 0;
  border-top: 1px solid var(--line);
}
.collaboration-step:last-child {
  padding-bottom: 0;
}
.step-index {
  color: #566e62;
  font-size: 12px;
  padding-top: 5px;
}
.collaboration-step h3 {
  font-size: 18px;
  font-weight: 480;
  line-height: 1.5;
  color: #d4dcd8;
}
.collaboration-step p {
  font-size: 14px;
  line-height: 1.8;
  margin-top: 8px;
  color: #7e8d85;
}
.contact-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 75px;
  border-top: 1px solid #a7bfb42a;
  border-bottom: 1px solid var(--line);
  padding-top: 58px;
  padding-bottom: 58px;
}
.contact-section h2 {
  font-size: 32px;
}
.contact-section > div > p:last-child {
  color: #7e8f86;
  font-size: 14px;
  line-height: 1.8;
  margin-top: 16px;
}
.contact-channels {
  padding-top: 4px;
  max-width: 450px;
  width: 100%;
  justify-self: end;
}
.feishu-agent-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 112px;
  align-items: center;
  gap: 22px;
  padding: 20px 20px 20px 22px;
  margin-bottom: 12px;
  background:
    radial-gradient(circle at 90% 15%, #3370ff1c, transparent 42%),
    #0d1216;
  border: 1px solid #6d8cba2d;
  border-radius: 5px;
  transition: border-color 0.2s, background 0.2s;
}
.feishu-agent-card:hover {
  border-color: #78a0dd64;
  background:
    radial-gradient(circle at 90% 15%, #3370ff2e, transparent 44%),
    #10171d;
}
.feishu-agent-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  min-width: 0;
}
.feishu-agent-copy small {
  color: #83a8df;
  font: 11px/1.4 var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.feishu-agent-copy strong {
  margin-top: 8px;
  color: #e5e9eb;
  font-size: 19px;
  font-weight: 500;
  letter-spacing: -0.025em;
}
.feishu-agent-copy > span {
  margin-top: 8px;
  color: #81909a;
  font-size: 12px;
  line-height: 1.7;
}
.feishu-agent-copy b {
  margin-top: 14px;
  color: #a6b9d4;
  font-size: 12px;
  font-weight: 450;
}
.feishu-agent-card img {
  width: 112px;
  height: 112px;
  padding: 6px;
  border-radius: 4px;
  background: white;
}
.wechat-button {
  background: #101713;
  border: 1px solid #a9c2b123;
  border-radius: 5px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  text-align: left;
  padding: 19px 22px;
  gap: 20px;
  transition:
    border-color 0.2s,
    background 0.2s;
}
.wechat-button:hover {
  border-color: #a2d7b657;
  background: #141f19;
}
.wechat-button > .wechat-identity {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-right: auto;
}
.wechat-icon {
  flex-shrink: 0;
  color: #c7c7c7;
}
.wechat-button small {
  font-size: 12px;
  color: #7f9a8a;
}
.wechat-button strong {
  font-size: 21px;
  font-weight: 470;
  letter-spacing: -0.03em;
}
.copy-label {
  font-size: 14px;
  color: #9db9a7;
  white-space: nowrap;
}
.copy-label > span {
  margin-left: 8px;
}
.copy-status {
  color: var(--accent);
  font-size: 14px;
  line-height: 1.6;
  margin-top: 10px;
}
.copy-status:empty {
  display: none;
}
.contact-links {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 20px;
  color: #92a299;
  font-size: 14px;
  margin-top: 22px;
}
.contact-links summary {
  cursor: pointer;
  list-style: none;
}
.contact-links summary::-webkit-details-marker {
  display: none;
}
.contact-links summary span {
  display: inline-block;
  margin-left: 8px;
}
.contact-links details[open] summary span {
  transform: rotate(45deg);
}
.contact-links img {
  display: block;
  width: 145px;
  margin-top: 15px;
  border-radius: 4px;
}
.site-footer {
  display: flex;
  align-items: center;
  gap: 25px;
  padding-top: 28px;
  padding-bottom: 32px;
  color: #65746c;
  font-size: 12px;
  line-height: 1.7;
}
.site-footer > .mono {
  letter-spacing: 0.035em;
}
.site-footer a:hover {
  color: #a8c5b4;
}
.back-top {
  margin-left: auto;
}
.enter {
  animation: enter 0.85s cubic-bezier(0.16, 1, 0.3, 1) both;
}
.hero h1.enter {
  animation-delay: 0.08s;
}
.hero-bottom.enter {
  animation-delay: 0.17s;
}
.hero-index.enter {
  animation-delay: 0.26s;
}
.reveal-pending {
  opacity: 0;
  transform: translateY(24px);
}
.is-visible {
  opacity: 1;
  transform: none;
  transition:
    opacity 0.75s ease,
    transform 0.75s cubic-bezier(0.16, 1, 0.3, 1);
}
.product:nth-child(2).is-visible {
  transition-delay: 0.1s;
}
.motion-off *,
.motion-off *::before,
.motion-off *::after,
.page-hidden *,
.page-hidden *::before,
.page-hidden *::after {
  animation-play-state: paused !important;
}
.motion-off .reveal-pending {
  opacity: 1;
  transform: none;
}
html.motion-off {
  scroll-behavior: auto;
}
.motion-off *,
.motion-off *::before,
.motion-off *::after {
  scroll-behavior: auto !important;
  transition: none !important;
}
.motion-off .enter {
  animation: none;
}
.motion-off .field-scan {
  opacity: 0;
}
@keyframes enter {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
@keyframes field-scan {
  0% {
    transform: translateY(0);
    opacity: 0;
  }
  12% {
    opacity: 1;
  }
  85% {
    opacity: 0.7;
  }
  100% {
    transform: translateY(440px);
    opacity: 0;
  }
}
@keyframes flow-travel {
  0%,
  15% {
    transform: translateX(-110%);
    opacity: 0;
  }
  30% {
    opacity: 1;
  }
  80%,
  100% {
    transform: translateX(310%);
    opacity: 0;
  }
}
@media (min-width: 1500px) {
  .shell {
    width: min(1280px, calc(100% - 160px));
  }
  .hero {
    padding-top: 104px;
  }
  .hero h1 {
    font-size: 88px;
  }
  .hero-index {
    margin-top: 83px;
  }
}
@media (max-width: 1100px) {
  .shell {
    width: calc(100% - 72px);
  }
  .hero {
    padding-top: 70px;
  }
  .hero h1 {
    font-size: 64px;
  }
  .hero-note {
    max-width: 215px;
  }
  .hero-note > .mono {
    font-size: 12px;
    line-height: 1.7;
  }
  .hero-index {
    grid-template-columns: 0.65fr 1.6fr 1.6fr;
    gap: 24px;
  }
  .index-detail {
    display: none;
  }
  .product-grid {
    gap: 25px;
  }
  .huahua-brand {
    left: 10%;
    gap: 15px;
  }
  .huahua-brand img {
    width: 76px;
    height: 76px;
  }
  .huahua-brand strong {
    font-size: 30px;
  }
  .huahua-brand > div > span {
    font-size: 12px;
  }
  .agent-flow {
    left: 8%;
    right: 8%;
    gap: 7px;
  }
  .flow-node {
    gap: 6px;
  }
  .flow-symbol {
    width: 22px;
    height: 22px;
  }
  .collaborate-section {
    gap: 40px;
  }
  .desktop-break {
    display: none;
  }
  .contact-section {
    gap: 40px;
  }
}
@media (max-width: 800px) {
  .shell {
    width: calc(100% - 48px);
  }
  .header-inner {
    height: 76px;
  }
  nav {
    gap: 25px;
  }
  .hero {
    padding-top: 64px;
  }
  .hero h1 {
    font-size: 56px;
  }
  .hero-note {
    display: none;
  }
  .hero-bottom {
    margin-top: 27px;
  }
  .hero-index {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-top: 52px;
  }
  .index-label {
    display: none;
  }
  .hero-index > a {
    padding-block: 21px;
    gap: 12px;
  }
  .work-section {
    padding-top: 78px;
  }
  .section-heading > p {
    max-width: 150px;
    line-height: 1.7;
  }
  .product-grid {
    gap: 23px;
  }
  .product-cover {
    aspect-ratio: 1.18;
  }
  .cover-topline {
    left: 18px;
    right: 18px;
    top: 20px;
  }
  .cover-bottomline {
    left: 18px;
    right: 18px;
    bottom: 18px;
    gap: 10px;
  }
  .cover-bottomline > span:last-child {
    font-size: 12px;
  }
  .huahua-brand {
    left: 9%;
    gap: 13px;
    top: 25%;
  }
  .huahua-brand img {
    width: 61px;
    height: 61px;
  }
  .huahua-brand strong {
    font-size: 27px;
  }
  .huahua-brand > div > span {
    font-size: 12px;
    max-width: 130px;
    line-height: 1.6;
    margin-top: 5px;
  }
  .agent-flow {
    left: 9%;
    right: 9%;
    bottom: 22%;
  }
  .flow-node {
    flex-direction: column;
    gap: 8px;
  }
  .flow-connector {
    margin-bottom: 25px;
  }
  .vector-logo {
    width: 85px;
  }
  .vector-cover .cover-category {
    font-size: 12px;
    text-align: right;
    max-width: 78px;
    line-height: 1.7;
  }
  .drawing-preview {
    top: 24%;
    height: 62%;
    width: 100%;
    left: 0;
  }
  .product-title h3 {
    font-size: 23px;
  }
  .product-title h3 > span {
    font-size: 12px;
    margin-left: 6px;
  }
  .product-description {
    font-size: 16px;
  }
  .product-description br {
    display: none;
  }
  .product-meta {
    align-items: start;
    flex-direction: column;
    gap: 9px;
  }
  .collaborate-section {
    padding-top: 85px;
    padding-bottom: 78px;
    gap: 35px;
    grid-template-columns: 1fr 1fr;
  }
  .collaborate-intro h2 {
    font-size: 29px;
  }
  .collaborate-description {
    font-size: 16px;
  }
  .collaboration-step {
    gap: 15px;
    padding: 22px 0;
  }
  .collaboration-step h3 {
    font-size: 17px;
  }
  .contact-section {
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    padding-block: 43px;
  }
  .contact-section h2 {
    font-size: 27px;
  }
  .wechat-button {
    padding: 16px;
  }
  .wechat-button strong {
    font-size: 19px;
  }
  .contact-links {
    flex-wrap: wrap;
    gap: 14px;
  }
  .site-footer {
    gap: 20px;
  }
}
@media (max-width: 600px) {
  html {
    scroll-padding-top: 83px;
  }
  .shell {
    width: calc(100% - 40px);
  }
  .header-inner {
    height: 69px;
    gap: 20px;
  }
  .wordmark {
    font-size: 27px;
  }
  nav {
    gap: 23px;
    font-size: 14px;
  }
  .header-contact {
    margin-left: 0;
    gap: 9px;
  }
  .hero {
    padding-top: 49px;
  }
  .hero-field {
    inset: 0 -10px 24% 8%;
    background-size:
      auto,
      48px 48px,
      48px 48px;
    opacity: 0.6;
  }
  .hero-kicker {
    font-size: 12px;
    letter-spacing: 0.045em;
    gap: 9px;
  }
  .hero h1 {
    font-size: clamp(37px, 8.6vw, 51px);
    margin-top: 26px;
    line-height: 1.35;
    letter-spacing: -0.05em;
  }
  .hero-bottom {
    margin-top: 23px;
  }
  .hero-intro > p {
    font-size: 16px;
    line-height: 1.85;
  }
  .mobile-break {
    display: block;
  }
  .hero-actions {
    margin-top: 27px;
    gap: 23px;
  }
  .primary-button {
    gap: 24px;
    padding: 13px 16px;
  }
  .text-link {
    gap: 11px;
  }
  .hero-index {
    gap: 17px;
    margin-top: 45px;
  }
  .hero-index > a {
    flex-wrap: wrap;
    gap: 8px 11px;
    font-size: 15px;
    padding-block: 18px;
    align-items: center;
  }
  .hero-index > a > span:last-child {
    order: 1;
  }
  .index-state {
    order: 2;
    width: 100%;
    font-size: 12px;
  }
  .work-section {
    padding-top: 64px;
  }
  .section-heading {
    align-items: start;
    margin-bottom: 25px;
  }
  .section-heading h2 {
    font-size: 29px;
  }
  .section-heading > p {
    display: none;
  }
  .eyebrow {
    margin-bottom: 12px;
  }
  .product-grid {
    grid-template-columns: 1fr;
    gap: 42px;
  }
  .product-cover {
    aspect-ratio: 1.35;
  }
  .huahua-brand {
    top: 25%;
    left: 12%;
    gap: 22px;
  }
  .huahua-brand img {
    height: 80px;
    width: 80px;
  }
  .huahua-brand strong {
    font-size: 32px;
  }
  .huahua-brand > div > span {
    max-width: none;
    font-size: 13px;
  }
  .agent-flow {
    left: 12%;
    right: 12%;
    bottom: 21%;
    gap: 9px;
  }
  .flow-node {
    flex-direction: column;
    gap: 8px;
  }
  .flow-connector {
    margin-bottom: 26px;
  }
  .flow-symbol {
    height: 23px;
    width: 23px;
  }
  .cover-topline {
    left: 21px;
    right: 21px;
    top: 22px;
  }
  .cover-bottomline {
    left: 21px;
    right: 21px;
    bottom: 19px;
  }
  .vector-cover .cover-topline {
    top: 12px;
  }
  .vector-logo {
    width: 98px;
  }
  .vector-cover .cover-category {
    max-width: none;
  }
  .drawing-preview {
    width: 96%;
    left: 2%;
    top: 20%;
    height: 68%;
  }
  .product-title {
    margin-top: 22px;
  }
  .product-title h3 {
    font-size: 25px;
  }
  .product-title h3 > span {
    font-size: 14px;
    margin-left: 10px;
  }
  .product-description {
    font-size: 16px;
    margin-top: 10px;
  }
  .product-meta {
    flex-direction: row;
    gap: 18px;
    margin-top: 16px;
  }
  .more-work {
    margin-top: 32px;
  }
  .more-work summary {
    padding-block: 22px;
  }
  .more-work summary > .mono {
    font-size: 0;
  }
  .more-work summary i {
    font-size: 20px;
    margin-left: 0;
  }
  .project-list {
    grid-template-columns: 1fr;
    padding-bottom: 12px;
  }
  .project-list a {
    font-size: 14px;
  }
  .collaborate-section {
    grid-template-columns: 1fr;
    gap: 29px;
    padding-top: 71px;
    padding-bottom: 64px;
  }
  .collaborate-intro h2 {
    font-size: 32px;
    line-height: 1.45;
  }
  .collaborate-description {
    margin-top: 20px;
    font-size: 16px;
  }
  .collaboration-label {
    margin-top: 18px;
  }
  .collaboration-steps {
    padding: 0;
  }
  .collaboration-step {
    padding-block: 23px;
    gap: 23px;
  }
  .collaboration-step h3 {
    font-size: 18px;
  }
  .collaboration-step p {
    font-size: 14px;
    margin-top: 6px;
  }
  .contact-section {
    grid-template-columns: 1fr;
    gap: 27px;
    padding-top: 39px;
    padding-bottom: 36px;
  }
  .contact-section h2 {
    font-size: 29px;
  }
  .contact-section > div > p:last-child {
    margin-top: 12px;
  }
  .contact-channels {
    max-width: none;
  }
  .feishu-agent-card {
    grid-template-columns: minmax(0, 1fr) 104px;
    gap: 16px;
    padding: 17px;
  }
  .feishu-agent-card img {
    width: 104px;
    height: 104px;
  }
  .wechat-button {
    padding: 18px 20px;
  }
  .wechat-button strong {
    font-size: 22px;
  }
  .contact-links {
    justify-content: space-between;
  }
  .site-footer {
    flex-wrap: wrap;
    gap: 12px 20px;
    padding-top: 25px;
    padding-bottom: 28px;
  }
  .site-footer > .mono {
    width: calc(100% - 220px);
    min-width: 100px;
  }
  .site-footer > a:nth-child(2) {
    margin-left: auto;
  }
}
@media (max-width: 370px) {
  .shell {
    width: calc(100% - 32px);
  }
  nav {
    gap: 17px;
  }
  .hero h1 {
    font-size: 36px;
  }
  .hero-actions {
    gap: 19px;
  }
  .huahua-brand {
    gap: 15px;
    left: 10%;
  }
  .huahua-brand img {
    width: 69px;
    height: 69px;
  }
  .huahua-brand strong {
    font-size: 29px;
  }
  .huahua-brand > div > span {
    font-size: 12px;
  }
  .agent-flow {
    left: 9%;
    right: 9%;
    gap: 6px;
  }
  .flow-node {
    font-size: 12px;
    gap: 5px;
  }
  .flow-symbol {
    display: none;
  }
  .flow-connector {
    margin-bottom: 0;
  }
  .cover-bottomline {
    left: 18px;
    right: 18px;
  }
  .product-meta {
    gap: 13px;
  }
  .product-meta > span:last-child {
    font-size: 12px;
  }
}
@media (prefers-reduced-motion: reduce) {
  html:not(.motion-enabled) {
    scroll-behavior: auto;
  }
  html:not(.motion-enabled) *,
  html:not(.motion-enabled) *::before,
  html:not(.motion-enabled) *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
  html:not(.motion-enabled) .reveal-pending {
    opacity: 1;
    transform: none;
  }
  html:not(.motion-enabled) .field-scan {
    display: none;
  }
}