:root {
  --navy: #07489f;
  --navy-deep: #052d70;
  --blue: #0758b9;
  --blue-bright: #1483d6;
  --aqua: #e20d18;
  --aqua-pale: #e9f2ff;
  --lime: #ffd43b;
  --cloud: #f4f7fc;
  --white: #ffffff;
  --ink: #172d50;
  --muted: #5e6d84;
  --line: #d1dae8;
  --sans: "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --mono: "DM Mono", monospace;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: hidden;
  background: var(--white);
  color: var(--ink);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

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

button,
input,
select,
textarea {
  font: inherit;
}

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

::selection {
  background: var(--aqua);
  color: var(--white);
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: -5rem;
  left: 1rem;
  padding: 0.8rem 1rem;
  background: var(--lime);
  color: var(--navy-deep);
  transition: top 0.2s;
}

.skip-link:focus {
  top: 1rem;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.topbar {
  position: relative;
  z-index: 102;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 34px;
  padding: 0 4vw;
  background: #033278;
  color: rgba(255, 255, 255, 0.72);
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.07em;
}

.topbar p {
  margin: 0;
}

.topbar > div {
  display: flex;
  align-items: center;
  height: 100%;
}

.topbar a,
.topbar button {
  display: grid;
  place-items: center;
  height: 100%;
  padding: 0 1rem;
  border: 0;
  border-left: 1px solid rgba(255, 255, 255, 0.15);
  cursor: pointer;
  background: transparent;
  color: inherit;
}

.topbar a:hover,
.topbar button:hover {
  color: var(--aqua);
}

.site-header {
  position: absolute;
  z-index: 100;
  top: 34px;
  left: 0;
  right: 0;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  height: 86px;
  padding: 0 4vw;
  border-bottom: 1px solid rgba(7, 72, 159, 0.14);
  background: rgba(255, 255, 255, 0.97);
  color: var(--navy-deep);
  box-shadow: 0 5px 28px rgba(5, 45, 112, 0.08);
  transition: transform 0.35s, background 0.35s, color 0.35s, box-shadow 0.35s;
}

.site-header.is-scrolled {
  position: fixed;
  top: 0;
  background: rgba(255, 255, 255, 0.96);
  color: var(--navy);
  box-shadow: 0 5px 30px rgba(5, 43, 59, 0.09);
  backdrop-filter: blur(15px);
}

.site-header.is-hidden {
  transform: translateY(-100%);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  min-width: 190px;
}

.brand-image {
  position: relative;
  width: 185px;
  height: 64px;
  overflow: hidden;
  background: var(--white);
}

.brand-image img {
  position: absolute;
  top: -34px;
  left: 0;
  width: 180px;
  height: auto;
  max-width: none;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(1.2rem, 2.4vw, 2.7rem);
  font-size: 0.8rem;
  font-weight: 600;
}

.site-nav a {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.25rem;
  height: 86px;
}

.site-nav a::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--aqua);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.35s var(--ease);
}

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

.site-nav i {
  color: var(--aqua);
  font-size: 0.6rem;
  font-style: normal;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.search-button {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid currentColor;
  border-radius: 50%;
  cursor: pointer;
  background: transparent;
  color: inherit;
}

.search-button svg {
  width: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
}

.site-search {
  width: min(760px, calc(100% - 2rem));
  max-height: min(760px, calc(100dvh - 2rem));
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--ink);
}

.site-search::backdrop {
  background: rgba(2, 24, 61, 0.78);
  backdrop-filter: blur(10px);
}

.site-search-inner {
  padding: clamp(1.5rem, 4vw, 3.5rem);
  background: var(--white);
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.32);
}

.search-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 2rem;
}

.search-head span {
  color: var(--blue);
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.16em;
}

.search-head h2 {
  margin: 0.6rem 0 0;
  font-size: clamp(2rem, 5vw, 3.8rem);
  letter-spacing: -0.06em;
}

.search-head button {
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid var(--line);
  cursor: pointer;
  background: transparent;
  color: var(--navy);
  font-size: 1.5rem;
  line-height: 1;
}

.search-field {
  display: block;
  margin: 2.5rem 0 1.5rem;
}

.search-field input {
  width: 100%;
  padding: 1.1rem 0;
  border: 0;
  border-bottom: 2px solid var(--navy);
  outline: 0;
  color: var(--ink);
  font-size: clamp(1.05rem, 2.5vw, 1.4rem);
}

.search-results {
  display: grid;
}

.search-results a {
  display: grid;
  grid-template-columns: minmax(120px, 0.6fr) 1fr auto;
  gap: 1rem;
  align-items: center;
  padding: 1rem 0;
  border-bottom: 1px solid var(--line);
  transition: color 0.25s, padding 0.25s;
}

.search-results a:hover {
  padding-inline: 0.7rem;
  color: var(--blue);
}

.search-results span {
  font-weight: 700;
}

.search-results small {
  color: var(--muted);
  font-size: 0.68rem;
}

.search-results b {
  color: var(--aqua);
}

.search-empty {
  margin: 0;
  padding: 1.3rem 0;
  color: var(--muted);
}

.header-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.4rem;
  min-width: 132px;
  padding: 0.85rem 1rem;
  background: var(--aqua);
  color: var(--white);
  font-size: 0.78rem;
  font-weight: 700;
  transition: background 0.25s, transform 0.25s;
}

.header-cta:hover {
  background: var(--navy);
  color: var(--white);
  transform: translateY(-2px);
}

.menu-toggle {
  display: none;
}

.hero {
  position: relative;
  min-height: calc(100svh - 34px);
  overflow: hidden;
  background: linear-gradient(105deg, #052d70 0%, #07489f 57%, #ffffff 57%);
  color: var(--white);
}

.hero-image {
  position: absolute;
  top: 120px;
  right: 0;
  bottom: 0;
  width: 45%;
  background-color: var(--white);
  background-image: radial-gradient(circle at 50% 46%, rgba(20, 131, 214, 0.12), transparent 50%),
    url("assets/chaoren-logo-shield.jpg");
  background-position: center;
  background-repeat: no-repeat;
  background-size: 96% auto;
  transform: scale(1.04);
  animation: hero-focus 1.8s var(--ease) forwards;
}

.hero-image::before {
  content: "";
  position: absolute;
  left: -38px;
  top: 8%;
  width: 76px;
  height: 76px;
  border: 14px solid var(--aqua);
  border-radius: 50%;
  opacity: 0.9;
}

.hero-image::after {
  content: "SAFE · FAST · PROFESSIONAL";
  position: absolute;
  right: 4vw;
  bottom: 3rem;
  color: var(--navy);
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.17em;
}

.hero-grid {
  position: absolute;
  inset: 120px 4vw 0;
  border-left: 1px solid rgba(255, 255, 255, 0.1);
  border-right: 1px solid rgba(255, 255, 255, 0.08);
  background-image: linear-gradient(90deg, transparent calc(25% - 1px), rgba(255, 255, 255, 0.08) 25%, transparent calc(25% + 1px)),
    linear-gradient(90deg, transparent calc(50% - 1px), rgba(255, 255, 255, 0.08) 50%, transparent calc(50% + 1px)),
    linear-gradient(90deg, transparent calc(75% - 1px), rgba(255, 255, 255, 0.08) 75%, transparent calc(75% + 1px));
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  width: min(92%, 1380px);
  margin: 0 auto;
  padding-top: clamp(13rem, 26vh, 18rem);
}

.hero-tag {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin: 0 0 1.5rem;
  color: var(--aqua);
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
}

.hero-tag::before {
  content: "";
  width: 42px;
  height: 1px;
  background: var(--aqua);
}

.hero h1 {
  margin: 0;
  max-width: 58%;
  font-size: clamp(3.7rem, 6.7vw, 7.3rem);
  font-weight: 700;
  letter-spacing: -0.065em;
  line-height: 1.07;
}

.hero h1 span {
  color: var(--aqua);
}

.hero-lead {
  max-width: 38rem;
  margin: 2rem 0 0;
  color: rgba(255, 255, 255, 0.8);
  font-size: clamp(0.95rem, 1.25vw, 1.15rem);
  line-height: 1.9;
}

.hero-buttons {
  display: flex;
  gap: 0.9rem;
  margin-top: 2.6rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 2.2rem;
  min-height: 52px;
  padding: 0.9rem 1.3rem;
  border: 1px solid transparent;
  font-size: 0.82rem;
  font-weight: 700;
  transition: background 0.25s, color 0.25s, border-color 0.25s, transform 0.25s;
}

.button:hover {
  transform: translateY(-3px);
}

.button-primary {
  background: var(--aqua);
  color: var(--white);
}

.button-primary:hover {
  background: var(--white);
  color: var(--navy-deep);
}

.button-ghost {
  border-color: rgba(255, 255, 255, 0.6);
  color: var(--white);
}

.button-ghost:hover {
  border-color: var(--white);
  background: var(--white);
  color: var(--navy-deep);
}

.hero-proof {
  position: absolute;
  z-index: 3;
  right: 4vw;
  bottom: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  width: min(52vw, 730px);
  min-height: 124px;
  background: rgba(3, 34, 89, 0.94);
  backdrop-filter: blur(12px);
}

.hero-proof > div {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-content: center;
  padding: 1.4rem 2rem;
  border-left: 1px solid rgba(255, 255, 255, 0.14);
}

.hero-proof strong,
.hero-proof b {
  color: var(--white);
  font-family: var(--mono);
  font-size: clamp(1.8rem, 3vw, 3rem);
  font-weight: 500;
  line-height: 1;
}

.hero-proof b {
  align-self: flex-start;
  padding-top: 0.2rem;
  font-size: 1.1rem;
}

.hero-proof span {
  flex-basis: 100%;
  margin-top: 0.6rem;
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.68rem;
}

.hero-scroll {
  position: absolute;
  z-index: 3;
  left: 4vw;
  bottom: 2.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  font-family: var(--mono);
  font-size: 0.55rem;
  letter-spacing: 0.18em;
}

.hero-scroll i {
  position: relative;
  width: 76px;
  height: 1px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.3);
}

.hero-scroll i::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--aqua);
  animation: scan 2.2s ease-in-out infinite;
}

.reveal {
  opacity: 0;
  transform: translateY(32px);
  animation: reveal-in 0.9s var(--ease) forwards;
}

.hero .hero-tag {
  animation-delay: 0.2s;
}

.hero h1 {
  animation-delay: 0.34s;
}

.hero-lead {
  animation-delay: 0.48s;
}

.hero-buttons {
  animation-delay: 0.6s;
}

.hero-proof {
  animation-delay: 0.72s;
}

.signal-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  background: var(--aqua);
  color: var(--white);
}

.signal-bar div {
  display: flex;
  align-items: center;
  gap: 1rem;
  min-height: 72px;
  padding: 1rem 2vw;
  border-right: 1px solid rgba(255, 255, 255, 0.28);
  font-size: 0.8rem;
  font-weight: 700;
}

.signal-bar span {
  font-family: var(--mono);
  font-size: 0.58rem;
}

.service-area {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 8vw;
  align-items: end;
  padding: clamp(5rem, 8vw, 8rem) 5vw;
  background: var(--white);
}

.service-area-copy > span {
  display: block;
  margin-bottom: 1.2rem;
  color: var(--blue);
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.15em;
}

.service-area h2 {
  margin: 0;
  font-size: clamp(2.8rem, 5.4vw, 6rem);
  letter-spacing: -0.065em;
  line-height: 1.1;
}

.service-area-note > p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.95;
}

.area-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 2.2rem;
}

.area-tags span {
  padding: 0.68rem 0.85rem;
  border: 1px solid var(--line);
  color: var(--navy);
  font-size: 0.7rem;
  font-weight: 700;
}

.section {
  padding: clamp(6rem, 10vw, 10rem) 5vw;
}

.section-label {
  font-size: 0.78rem;
}

.section-label span {
  display: block;
  margin-bottom: 1rem;
  color: var(--blue);
  font-family: var(--mono);
  font-size: 0.64rem;
  font-weight: 500;
  letter-spacing: 0.16em;
}

.section-label span::before {
  content: "/";
  margin-right: 0.45rem;
  color: var(--aqua);
}

.section-label p {
  margin: 0;
  color: var(--muted);
}

.section-label.light span {
  color: var(--aqua);
}

.section-label.light p {
  color: rgba(255, 255, 255, 0.6);
}

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

.js [data-reveal] {
  opacity: 0;
  transform: translateY(42px);
  transition: opacity 0.85s var(--ease), transform 0.85s var(--ease);
}

.js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

.purpose {
  display: grid;
  grid-template-columns: 1fr 3fr;
  gap: 4vw;
  background: var(--cloud);
}

.purpose-main {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 4vw;
  align-items: end;
}

.purpose h2,
.industry-head h2,
.impact-top h2,
.insights-head h2 {
  margin: 0;
  font-size: clamp(3rem, 5.7vw, 6.5rem);
  font-weight: 700;
  letter-spacing: -0.065em;
  line-height: 1.12;
}

.purpose h2 em,
.industry-head h2 em,
.impact-top h2 em {
  color: var(--blue-bright);
  font-style: normal;
}

.purpose-intro {
  margin: 0 0 0.7rem;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 2;
}

.value-grid {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: clamp(4rem, 8vw, 8rem);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.value-grid article {
  position: relative;
  padding: clamp(2rem, 3.5vw, 4rem);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--white);
  transition: background 0.35s, transform 0.35s;
}

.value-grid article:hover {
  z-index: 2;
  background: var(--aqua-pale);
  transform: translateY(-8px);
}

.value-icon {
  display: grid;
  place-items: center;
  width: 70px;
  height: 70px;
  margin-bottom: 4rem;
  border-radius: 50%;
  background: var(--aqua-pale);
  color: var(--blue);
}

.value-icon svg {
  width: 34px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.7;
}

.value-grid article > span {
  color: var(--blue);
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.09em;
}

.value-grid h3 {
  margin: 0.8rem 0 1rem;
  font-size: clamp(1.6rem, 2.3vw, 2.5rem);
}

.value-grid p {
  min-height: 4.6rem;
  margin: 0;
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.85;
}

.value-grid a {
  display: flex;
  justify-content: space-between;
  margin-top: 3rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  color: var(--blue);
  font-size: 0.76rem;
  font-weight: 700;
}

.value-grid a b {
  transition: transform 0.25s;
}

.value-grid a:hover b {
  transform: translateX(0.4rem);
}

.solutions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 900px;
  background: var(--navy-deep);
  color: var(--white);
}

.solutions-photo {
  position: relative;
  min-height: 680px;
  background-color: var(--white);
  background-image: radial-gradient(circle at 50% 48%, rgba(20, 131, 214, 0.12), transparent 52%),
    url("assets/chaoren-logo-service.jpg");
  background-position: center;
  background-repeat: no-repeat;
  background-size: 100% auto;
}

.solutions-photo::after {
  content: "";
  position: absolute;
  inset: 3rem;
  border: 1px solid rgba(7, 72, 159, 0.3);
  pointer-events: none;
}

.photo-caption {
  position: absolute;
  z-index: 2;
  left: 4rem;
  right: 4rem;
  bottom: 4rem;
  display: flex;
  justify-content: space-between;
  color: var(--navy);
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.1em;
}

.solutions-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(4rem, 7vw, 8rem);
}

.solutions-content h2,
.innovation h2,
.case-copy h2,
.contact h2 {
  margin: clamp(3rem, 6vw, 6rem) 0 2rem;
  font-size: clamp(2.8rem, 5.2vw, 6rem);
  font-weight: 700;
  letter-spacing: -0.065em;
  line-height: 1.12;
}

.solutions-content h2 span {
  color: var(--aqua);
}

.solutions-content > p {
  max-width: 42rem;
  margin: 0;
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.9rem;
  line-height: 1.95;
}

.solution-links {
  margin-top: 4rem;
  border-top: 1px solid rgba(255, 255, 255, 0.22);
}

.solution-links a {
  position: relative;
  display: grid;
  grid-template-columns: 3rem 1fr auto;
  gap: 1rem;
  align-items: center;
  padding: 1.35rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.22);
  overflow: hidden;
}

.solution-links a::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--aqua);
  transform: translateX(-102%);
  transition: transform 0.4s var(--ease);
}

.solution-links a:hover {
  color: var(--white);
}

.solution-links a:hover::before {
  transform: none;
}

.solution-links i,
.solution-links strong,
.solution-links span {
  position: relative;
  z-index: 2;
}

.solution-links i {
  color: var(--aqua);
  font-family: var(--mono);
  font-size: 0.6rem;
  font-style: normal;
}

.solution-links a:hover i {
  color: var(--white);
}

.solution-links strong {
  font-size: clamp(1rem, 1.5vw, 1.25rem);
}

.industries {
  background: var(--white);
}

.industry-head {
  display: grid;
  grid-template-columns: 1fr 1.5fr 1fr;
  gap: 5vw;
  align-items: end;
  margin-bottom: 6rem;
}

.industry-head > p {
  margin: 0 0 0.7rem;
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.9;
}

.industry-explorer {
  display: grid;
  grid-template-columns: minmax(220px, 0.7fr) 2fr;
  min-height: 650px;
  border: 1px solid var(--line);
}

.industry-tabs {
  display: flex;
  flex-direction: column;
  background: var(--cloud);
}

.industry-tabs button {
  position: relative;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex: 1;
  padding: 1.5rem 2rem;
  border: 0;
  border-bottom: 1px solid var(--line);
  cursor: pointer;
  background: transparent;
  color: var(--ink);
  text-align: left;
  font-size: 0.88rem;
  font-weight: 600;
  transition: background 0.3s, color 0.3s;
}

.industry-tabs button:last-child {
  border-bottom: 0;
}

.industry-tabs button::after {
  content: "→";
  position: absolute;
  right: 1.5rem;
  opacity: 0;
  transform: translateX(-0.5rem);
  transition: opacity 0.3s, transform 0.3s;
}

.industry-tabs button.is-active {
  background: var(--navy);
  color: var(--white);
}

.industry-tabs button.is-active::after {
  opacity: 1;
  transform: none;
}

.industry-tabs span {
  color: var(--blue-bright);
  font-family: var(--mono);
  font-size: 0.58rem;
}

.industry-tabs button.is-active span {
  color: var(--aqua);
}

.industry-panel {
  display: grid;
  grid-template-columns: 1.12fr 1fr;
  opacity: 1;
  transition: opacity 0.18s, transform 0.18s;
}

.industry-panel.is-changing {
  opacity: 0;
  transform: translateY(8px);
}

.industry-image {
  position: relative;
  min-height: 580px;
  overflow: hidden;
  background-color: var(--blue);
  transition: background-image 0.4s;
}

.industry-image[data-industry-image="food"] {
  background-image: linear-gradient(145deg, #e9f2ff 0 44%, #0758b9 44% 78%, #e20d18 78%);
}

.industry-image[data-industry-image="property"] {
  background-image: linear-gradient(145deg, #062d70 0 36%, #f4f7fc 36% 70%, #e20d18 70%);
}

.industry-image[data-industry-image="retail"] {
  background-image: linear-gradient(35deg, #e20d18 0 25%, #0758b9 25% 66%, #e9f2ff 66%);
}

.industry-image[data-industry-image="public"] {
  background-image: linear-gradient(145deg, #ffffff 0 38%, #1483d6 38% 74%, #052d70 74%);
}

.industry-image[data-industry-image="home"] {
  background-image: linear-gradient(35deg, #052d70 0 30%, #e9f2ff 30% 68%, #e20d18 68%);
}

.industry-graphic {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 3rem;
  color: var(--white);
}

.industry-image[data-industry-image="food"] .industry-graphic,
.industry-image[data-industry-image="public"] .industry-graphic {
  color: var(--navy-deep);
}

.industry-graphic::before,
.industry-graphic::after {
  content: "";
  position: absolute;
  border: 1px solid currentColor;
  border-radius: 50%;
  opacity: 0.5;
}

.industry-graphic::before {
  right: -14%;
  top: 14%;
  width: 55%;
  aspect-ratio: 1;
}

.industry-graphic::after {
  left: 12%;
  bottom: 16%;
  width: 28%;
  aspect-ratio: 1;
}

.industry-graphic > span {
  position: relative;
  z-index: 2;
  font-family: var(--mono);
  font-size: clamp(3.8rem, 8vw, 8rem);
  font-weight: 500;
  letter-spacing: -0.09em;
  line-height: 0.8;
}

.industry-graphic > b {
  position: absolute;
  right: 3rem;
  top: 3rem;
  font-family: var(--mono);
  font-size: clamp(5rem, 12vw, 11rem);
  font-weight: 500;
  opacity: 0.16;
}

.industry-graphic > i {
  position: relative;
  z-index: 2;
  width: max-content;
  padding: 0.75rem 1rem;
  border: 1px solid currentColor;
  font-size: 0.72rem;
  font-style: normal;
  letter-spacing: 0.08em;
}

.industry-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(2.5rem, 5vw, 5rem);
  background: var(--navy);
  color: var(--white);
}

.industry-copy > span {
  color: var(--aqua);
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.15em;
}

.industry-copy h3 {
  margin: 2rem 0 1.5rem;
  font-size: clamp(1.9rem, 3.2vw, 3.8rem);
  letter-spacing: -0.04em;
  line-height: 1.28;
}

.industry-copy > p {
  margin: 0;
  color: rgba(255, 255, 255, 0.64);
  font-size: 0.84rem;
  line-height: 1.9;
}

.industry-copy ul {
  margin: 2.5rem 0 3rem;
  padding: 0;
  list-style: none;
}

.industry-copy li {
  padding: 0.8rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
  font-size: 0.8rem;
}

.industry-copy li::before {
  content: "✓";
  margin-right: 0.8rem;
  color: var(--aqua);
}

.industry-copy > a {
  display: flex;
  justify-content: space-between;
  width: 100%;
  padding: 1rem 1.2rem;
  background: var(--aqua);
  color: var(--white);
  font-size: 0.78rem;
  font-weight: 700;
}

.innovation {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 880px;
  background: var(--navy);
  color: var(--white);
}

.innovation-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(5rem, 8vw, 9rem) 6vw;
}

.innovation h2 {
  margin-bottom: 1.8rem;
}

.innovation-copy > p {
  max-width: 40rem;
  margin: 0;
  color: rgba(255, 255, 255, 0.68);
  font-size: 0.9rem;
  line-height: 1.95;
}

.innovation-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin: 4rem 0 3.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.25);
}

.innovation-metrics div {
  padding: 1.5rem 0.7rem 0 0;
  border-right: 1px solid rgba(255, 255, 255, 0.25);
}

.innovation-metrics strong {
  display: block;
  color: var(--aqua);
  font-family: var(--mono);
  font-size: clamp(1.25rem, 2.3vw, 2.2rem);
  font-weight: 500;
}

.innovation-metrics span {
  display: block;
  margin-top: 0.55rem;
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.65rem;
}

.button-light {
  align-self: flex-start;
  background: var(--white);
  color: var(--navy-deep);
}

.button-light:hover {
  background: var(--lime);
}

.innovation-visual {
  position: relative;
  min-height: 680px;
  overflow: hidden;
  background: var(--white);
}

.innovation-visual::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  background: linear-gradient(180deg, transparent 35%, rgba(5, 45, 112, 0.18));
}

.lab-image {
  position: absolute;
  inset: 0;
  background-color: var(--white);
  background-image: radial-gradient(circle at 50% 50%, rgba(7, 88, 185, 0.12), transparent 52%),
    url("assets/chaoren-logo-shield.jpg");
  background-position: center;
  background-repeat: no-repeat;
  background-size: 94% auto;
}

.data-card {
  position: absolute;
  z-index: 3;
  border: 1px solid rgba(255, 255, 255, 0.45);
  background: rgba(5, 45, 112, 0.92);
  box-shadow: 0 15px 50px rgba(0, 0, 0, 0.25);
  backdrop-filter: blur(14px);
}

.card-a {
  right: 6%;
  bottom: 8%;
  width: min(72%, 460px);
  padding: 1.5rem;
}

.card-a > span,
.card-b > span {
  color: rgba(255, 255, 255, 0.6);
  font-family: var(--mono);
  font-size: 0.55rem;
  letter-spacing: 0.14em;
}

.card-a strong {
  display: block;
  margin-top: 0.7rem;
  color: var(--white);
  font-family: var(--mono);
  font-size: 2.2rem;
  font-weight: 500;
}

.card-a small {
  font-size: 0.75rem;
}

.card-a svg {
  width: 100%;
  height: 70px;
  margin-top: 1rem;
  overflow: visible;
  fill: none;
  stroke: #ff515c;
  stroke-width: 2;
}

.card-b {
  top: 12%;
  left: 5%;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.25rem 0.7rem;
  align-items: center;
  padding: 1rem 1.3rem;
}

.card-b i {
  grid-row: span 2;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: #42d789;
  box-shadow: 0 0 0 0.3rem rgba(66, 215, 137, 0.15);
}

.card-b strong {
  color: var(--white);
  font-family: var(--mono);
}

.impact {
  background: var(--cloud);
}

.impact-top {
  display: grid;
  grid-template-columns: 1fr 3fr;
  gap: 4vw;
}

.impact-numbers {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: clamp(5rem, 9vw, 9rem);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.impact-numbers article {
  padding: clamp(2rem, 4vw, 4rem);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--white);
}

.impact-numbers article > span {
  color: var(--blue);
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.15em;
}

.impact-numbers strong {
  display: block;
  margin: 2rem 0 1rem;
  color: var(--navy);
  font-family: var(--mono);
  font-size: clamp(2.5rem, 4.5vw, 5rem);
  font-weight: 500;
  letter-spacing: -0.07em;
}

.impact-numbers small {
  margin-left: 0.35rem;
  font-family: var(--sans);
  font-size: 0.8rem;
  letter-spacing: 0;
}

.impact-numbers p {
  margin: 0;
  color: var(--muted);
  font-size: 0.78rem;
}

.impact-bar {
  height: 4px;
  margin-top: 3rem;
  overflow: hidden;
  background: var(--aqua-pale);
}

.impact-bar i {
  display: block;
  width: var(--value);
  height: 100%;
  background: var(--aqua);
  transform: translateX(-100%);
  transition: transform 1.3s var(--ease) 0.3s;
}

.impact-numbers.is-visible .impact-bar i {
  transform: none;
}

.data-note {
  margin: 1rem 0 0;
  color: #74898e;
  font-size: 0.64rem;
}

.case-study {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  min-height: 850px;
}

.case-image {
  position: relative;
  background-color: var(--white);
  background-image: radial-gradient(circle at 50% 48%, rgba(7, 88, 185, 0.13), transparent 52%),
    url("assets/chaoren-logo-shield.jpg");
  background-position: center;
  background-repeat: no-repeat;
  background-size: 88% auto;
}

.case-image span {
  position: absolute;
  left: 3rem;
  bottom: 3rem;
  color: var(--navy);
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.14em;
}

.case-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(4rem, 7vw, 8rem);
  background: var(--navy);
  color: var(--white);
}

.case-tag {
  color: var(--aqua);
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
}

.case-copy h2 {
  margin: 3rem 0 1.8rem;
  font-size: clamp(2.5rem, 4.4vw, 5.2rem);
}

.case-copy > p {
  margin: 0;
  color: rgba(255, 255, 255, 0.66);
  font-size: 0.86rem;
  line-height: 1.95;
}

.case-results {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin: 4rem 0;
  padding: 1.5rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.22);
  border-bottom: 1px solid rgba(255, 255, 255, 0.22);
}

.case-results div {
  border-right: 1px solid rgba(255, 255, 255, 0.22);
}

.case-results div + div {
  padding-left: 1rem;
}

.case-results div:last-child {
  border-right: 0;
}

.case-results strong {
  display: block;
  color: var(--aqua);
  font-family: var(--mono);
  font-size: clamp(1.25rem, 2.1vw, 2rem);
}

.case-results span {
  display: block;
  margin-top: 0.4rem;
  color: rgba(255, 255, 255, 0.55);
  font-size: 0.6rem;
}

.case-copy > a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  padding: 1rem 1.2rem;
  background: var(--aqua);
  color: var(--white);
  font-size: 0.78rem;
  font-weight: 700;
}

.insights {
  background: var(--white);
}

.insights-head {
  display: grid;
  grid-template-columns: 1fr 2fr auto;
  gap: 4vw;
  align-items: end;
  margin-bottom: 5rem;
}

.insights-head > a {
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--ink);
  font-size: 0.75rem;
  font-weight: 700;
}

.insights-head > a span {
  margin-left: 2rem;
}

.article-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2vw;
}

.article-image {
  position: relative;
  display: block;
  aspect-ratio: 1.42;
  overflow: hidden;
  background-position: center;
  background-size: cover;
}

.article-image::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--aqua);
  opacity: 0;
  mix-blend-mode: color;
  transition: opacity 0.35s;
}

.article-image:hover::after {
  opacity: 0.78;
}

.article-image span {
  position: absolute;
  z-index: 2;
  left: 0;
  top: 0;
  padding: 0.65rem 0.9rem;
  background: var(--aqua);
  color: var(--white);
  font-size: 0.65rem;
  font-weight: 700;
}

.article-image-a {
  background-image: radial-gradient(circle at 68% 40%, transparent 0 14%, rgba(255, 255, 255, 0.2) 14% 15%, transparent 15%),
    linear-gradient(135deg, #052d70 0 58%, #e20d18 58%);
}

.article-image-b {
  background-image: repeating-linear-gradient(135deg, transparent 0 34px, rgba(255, 255, 255, 0.18) 34px 35px),
    linear-gradient(135deg, #1483d6 0 62%, #f4f7fc 62%);
}

.article-image-c {
  background-image: radial-gradient(circle at center, #ffffff 0 16%, transparent 16% 27%, rgba(255, 255, 255, 0.32) 27% 28%, transparent 28%),
    linear-gradient(145deg, #e20d18 0 36%, #0758b9 36%);
}

.article-image::before {
  position: absolute;
  right: 1.5rem;
  bottom: 0.8rem;
  z-index: 1;
  color: rgba(255, 255, 255, 0.88);
  font-size: clamp(4rem, 8vw, 8rem);
  font-weight: 900;
  line-height: 1;
}

.article-image-a::before {
  content: "防";
}

.article-image-b::before {
  content: "查";
  color: var(--navy);
}

.article-image-c::before {
  content: "净";
}

.article-meta {
  display: flex;
  justify-content: space-between;
  margin-top: 1.2rem;
  color: var(--blue);
  font-family: var(--mono);
  font-size: 0.55rem;
}

.article-grid h3 {
  margin: 1rem 0 0;
  font-size: clamp(1.1rem, 1.65vw, 1.5rem);
  line-height: 1.55;
}

.article-grid h3 a {
  background-image: linear-gradient(var(--ink), var(--ink));
  background-position: 0 100%;
  background-repeat: no-repeat;
  background-size: 0 1px;
  transition: background-size 0.35s;
}

.article-grid h3 a:hover {
  background-size: 100% 1px;
}

.faq {
  display: grid;
  grid-template-columns: minmax(280px, 0.8fr) minmax(420px, 1.2fr);
  gap: 8vw;
  background: var(--navy-deep);
  color: var(--white);
}

.faq-head {
  align-self: start;
}

.faq-head h2 {
  margin: clamp(3rem, 6vw, 6rem) 0 2rem;
  font-size: clamp(3rem, 5.7vw, 6.2rem);
  letter-spacing: -0.065em;
  line-height: 1.1;
}

.faq-head h2 em {
  color: #ff5861;
  font-style: normal;
}

.faq-head > p {
  max-width: 34rem;
  margin: 0;
  color: rgba(255, 255, 255, 0.62);
  font-size: 0.86rem;
  line-height: 1.9;
}

.faq-list {
  border-top: 1px solid rgba(255, 255, 255, 0.22);
}

.faq-list details {
  border-bottom: 1px solid rgba(255, 255, 255, 0.22);
}

.faq-list summary {
  display: grid;
  grid-template-columns: 2.5rem 1fr auto;
  gap: 1rem;
  align-items: center;
  padding: 1.6rem 0;
  cursor: pointer;
  font-size: clamp(0.95rem, 1.5vw, 1.2rem);
  font-weight: 700;
  list-style: none;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary span {
  color: #ff5861;
  font-family: var(--mono);
  font-size: 0.58rem;
}

.faq-list summary i {
  position: relative;
  width: 1.2rem;
  height: 1.2rem;
}

.faq-list summary i::before,
.faq-list summary i::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  width: 100%;
  height: 1px;
  background: currentColor;
  transition: transform 0.25s;
}

.faq-list summary i::after {
  transform: rotate(90deg);
}

.faq-list details[open] summary i::after {
  transform: rotate(0deg);
}

.faq-list details > p {
  margin: -0.2rem 0 1.8rem 3.5rem;
  color: rgba(255, 255, 255, 0.62);
  font-size: 0.82rem;
  line-height: 1.9;
}

.contact {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  background: var(--aqua-pale);
  color: var(--navy-deep);
}

.contact-copy,
.contact-form {
  padding: clamp(5rem, 8vw, 9rem) 6vw;
}

.contact-copy {
  border-right: 1px solid rgba(5, 43, 59, 0.25);
}

.contact-copy > span {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.15em;
}

.contact h2 {
  margin: clamp(3rem, 5vw, 5rem) 0 2rem;
}

.contact-copy > p {
  max-width: 34rem;
  margin: 0;
  color: rgba(5, 43, 59, 0.72);
  font-size: 0.9rem;
  line-height: 1.9;
}

.contact-details {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.7rem;
  margin-top: 4rem;
}

.contact-details a {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--navy-deep);
  font-family: var(--mono);
  font-size: 0.82rem;
}

.contact-details a span,
.contact-details > span b {
  display: block;
  font-family: var(--sans);
  font-size: 0.62rem;
  font-weight: 700;
}

.contact-details > span {
  color: rgba(5, 43, 59, 0.72);
  font-family: var(--mono);
  font-size: 0.72rem;
  line-height: 1.7;
}

.contact-details address {
  max-width: 28rem;
  color: rgba(5, 43, 59, 0.72);
  font-family: var(--mono);
  font-size: 0.72rem;
  font-style: normal;
  line-height: 1.8;
}

.contact-details address b {
  display: block;
  font-family: var(--sans);
  font-size: 0.62rem;
}

.contact-form {
  align-self: center;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.contact-form label {
  display: block;
  margin-bottom: 2rem;
  font-size: 0.68rem;
  font-weight: 700;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  display: block;
  width: 100%;
  margin-top: 0.65rem;
  padding: 0.8rem 0;
  border: 0;
  border-bottom: 1px solid rgba(5, 43, 59, 0.45);
  border-radius: 0;
  outline: none;
  resize: none;
  background: transparent;
  color: var(--navy-deep);
  font-size: 0.9rem;
  transition: border-color 0.25s;
}

.contact-form select {
  cursor: pointer;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: rgba(5, 43, 59, 0.48);
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  border-color: var(--navy-deep);
}

.privacy-check {
  display: flex !important;
  align-items: flex-start;
  gap: 0.7rem;
  cursor: pointer;
  color: rgba(5, 43, 59, 0.68);
  font-weight: 400 !important;
  line-height: 1.6;
}

.privacy-check input {
  width: 1rem;
  height: 1rem;
  margin: 0.08rem 0 0;
  accent-color: var(--navy-deep);
}

.form-submit {
  display: flex;
  justify-content: space-between;
  width: 100%;
  padding: 1.1rem 1.3rem;
  border: 1px solid var(--navy-deep);
  cursor: pointer;
  background: var(--navy-deep);
  color: var(--white);
  font-size: 0.8rem;
  font-weight: 700;
  transition: background 0.25s, color 0.25s;
}

.form-submit:hover {
  background: transparent;
  color: var(--navy-deep);
}

.form-status {
  min-height: 1.5rem;
  margin: 1rem 0 0;
  color: var(--navy-deep);
  font-size: 0.68rem;
}

.form-help {
  margin: 0.85rem 0 0;
  color: rgba(5, 43, 59, 0.62);
  font-size: 0.64rem;
  line-height: 1.7;
}

.site-footer {
  padding: 6rem 5vw 2rem;
  background: var(--navy-deep);
  color: var(--white);
}

.footer-main {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 8vw;
}

.footer-logo-card {
  width: min(100%, 290px);
  aspect-ratio: 1.22;
  overflow: hidden;
  background: var(--white);
  box-shadow: 12px 12px 0 rgba(226, 13, 24, 0.8);
}

.footer-logo-card img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.footer-brand p {
  margin: 2rem 0 0;
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.78rem;
}

.footer-mail {
  display: block;
  width: max-content;
  margin-top: 1rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.35);
  color: var(--white);
  font-family: var(--mono);
  font-size: 0.7rem;
}

.footer-address {
  margin-top: 1.2rem;
  color: rgba(255, 255, 255, 0.52);
  font-size: 0.66rem;
  font-style: normal;
  line-height: 1.8;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3rem;
}

.footer-links > div {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.footer-links span {
  margin-bottom: 0.8rem;
  color: #ff5861;
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.12em;
}

.footer-links a {
  width: max-content;
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.75rem;
}

.footer-links a:hover {
  color: var(--white);
}

.footer-bottom {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 2rem;
  margin-top: 6rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.17);
  color: rgba(255, 255, 255, 0.42);
  font-family: var(--mono);
  font-size: 0.55rem;
}

.footer-bottom div {
  display: flex;
  gap: 1.5rem;
}

.footer-bottom a:hover {
  color: var(--aqua);
}

.floating-contact {
  position: fixed;
  z-index: 90;
  right: 1.5rem;
  bottom: 1.5rem;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.15rem 1.2rem;
  min-width: 150px;
  padding: 0.85rem 1rem;
  border: 1px solid rgba(255, 255, 255, 0.5);
  background: var(--aqua);
  color: var(--white);
  box-shadow: 0 12px 36px rgba(5, 45, 112, 0.26);
  transition: transform 0.25s, background 0.25s;
}

.floating-contact:hover {
  background: var(--navy);
  transform: translateY(-4px);
}

.floating-contact span {
  font-family: var(--mono);
  font-size: 0.52rem;
  letter-spacing: 0.12em;
}

.floating-contact b {
  font-size: 0.78rem;
}

.floating-contact i {
  grid-column: 2;
  grid-row: 1 / 3;
  align-self: center;
  font-style: normal;
}

@keyframes reveal-in {
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes hero-focus {
  to {
    transform: scale(1);
  }
}

@keyframes scan {
  from {
    transform: translateX(-100%);
  }
  to {
    transform: translateX(100%);
  }
}

@media (max-width: 1120px) {
  .site-header {
    grid-template-columns: auto 1fr;
  }

  .site-nav {
    display: none;
  }

  .header-actions {
    justify-self: end;
  }

  .purpose-main {
    grid-template-columns: 1fr;
  }

  .industry-head {
    grid-template-columns: 0.8fr 1.4fr;
  }

  .industry-head > p {
    grid-column: 2;
  }

  .industry-panel {
    grid-template-columns: 1fr;
  }

  .industry-image {
    min-height: 380px;
  }
}

@media (max-width: 900px) {
  .topbar {
    display: none;
  }

  .site-header,
  .site-header.is-scrolled {
    position: fixed;
    top: 0;
    height: 72px;
    grid-template-columns: auto 1fr auto;
    padding: 0 1.25rem;
  }

  .brand-image {
    width: 155px;
    height: 60px;
    min-width: 155px;
  }

  .brand-image img {
    top: -28px;
    width: 150px;
  }

  .menu-toggle {
    position: relative;
    z-index: 104;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 0.4rem;
    grid-column: 3;
    width: 42px;
    height: 42px;
    padding: 0.6rem;
    border: 1px solid currentColor;
    background: transparent;
    color: inherit;
  }

  .menu-toggle > span:not(.sr-only) {
    width: 100%;
    height: 1px;
    background: currentColor;
    transition: transform 0.3s;
  }

  .menu-toggle[aria-expanded="true"] > span:first-child {
    transform: translateY(0.21rem) rotate(45deg);
  }

  .menu-toggle[aria-expanded="true"] > span:nth-child(2) {
    transform: translateY(-0.21rem) rotate(-45deg);
  }

  .menu-toggle[aria-expanded="true"] {
    border-color: var(--white);
    color: var(--white);
  }

  .site-nav {
    position: fixed;
    inset: 0;
    z-index: 103;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 0;
    padding: 6rem 8vw;
    visibility: hidden;
    background: var(--navy-deep);
    color: var(--white);
    opacity: 0;
    transform: translateY(-1.5rem);
    transition: opacity 0.35s, transform 0.35s, visibility 0.35s;
  }

  .site-nav.is-open {
    visibility: visible;
    opacity: 1;
    transform: none;
  }

  .site-nav a {
    width: 100%;
    height: auto;
    padding: 1rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    font-size: clamp(1.5rem, 6vw, 3rem);
  }

  .header-actions {
    display: none;
  }

  .hero {
    min-height: 900px;
    background: var(--navy-deep);
  }

  .hero-image {
    inset: 72px 0 0;
    width: 100%;
    background-size: min(86vw, 680px) auto;
    opacity: 0.13;
  }

  .hero-image::before,
  .hero-image::after {
    display: none;
  }

  .hero-content {
    padding-top: 12rem;
  }

  .hero h1 {
    max-width: none;
    font-size: clamp(3.5rem, 11vw, 6.5rem);
  }

  .hero-proof {
    left: 1.25rem;
    right: 1.25rem;
    width: auto;
  }

  .hero-scroll {
    display: none;
  }

  .signal-bar {
    grid-template-columns: 1fr 1fr;
  }

  .purpose,
  .impact-top,
  .service-area,
  .faq {
    grid-template-columns: 1fr;
  }

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

  .value-grid article:last-child {
    grid-column: 1 / -1;
  }

  .solutions,
  .innovation,
  .case-study,
  .contact {
    grid-template-columns: 1fr;
  }

  .solutions-photo,
  .innovation-visual,
  .case-image {
    min-height: 620px;
  }

  .industry-explorer {
    grid-template-columns: 1fr;
  }

  .industry-tabs {
    display: grid;
    grid-template-columns: repeat(5, minmax(150px, 1fr));
    overflow-x: auto;
  }

  .industry-tabs button {
    min-height: 95px;
    border-right: 1px solid var(--line);
    font-size: 0.75rem;
  }

  .industry-panel {
    grid-template-columns: 1fr 1fr;
  }

  .impact-numbers {
    grid-template-columns: 1fr;
  }

  .case-study {
    display: flex;
    flex-direction: column;
  }

  .case-image {
    order: 1;
  }

  .case-copy {
    order: 2;
  }

  .insights-head {
    grid-template-columns: 1fr 2fr;
  }

  .insights-head > a {
    grid-column: 2;
    justify-self: start;
  }

  .contact-copy {
    border-right: 0;
    border-bottom: 1px solid rgba(5, 43, 59, 0.25);
  }

  .faq {
    gap: 4rem;
  }
}

@media (max-width: 640px) {
  .section {
    padding: 5.5rem 1.25rem;
  }

  .hero {
    min-height: 850px;
  }

  .hero-image {
    background-image: url("assets/chaoren-logo-shield.jpg");
    background-position: center 42%;
    background-repeat: no-repeat;
    background-size: 118% auto;
    opacity: 0.1;
  }

  .hero-grid {
    inset-inline: 1.25rem;
  }

  .hero-content {
    width: auto;
    margin-inline: 1.25rem;
    padding-top: 10rem;
  }

  .hero h1 {
    font-size: clamp(3rem, 13.5vw, 4.8rem);
  }

  .hero-lead {
    line-height: 1.75;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: stretch;
  }

  .button {
    width: 100%;
  }

  .hero-proof {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    min-height: 108px;
  }

  .hero-proof > div {
    padding: 1rem 0.7rem;
  }

  .hero-proof strong {
    font-size: 1.55rem;
  }

  .hero-proof b {
    font-size: 0.78rem;
  }

  .hero-proof span {
    font-size: 0.55rem;
  }

  .service-area {
    gap: 2.5rem;
    padding: 5.5rem 1.25rem;
  }

  .signal-bar {
    grid-template-columns: 1fr;
  }

  .signal-bar div {
    min-height: 56px;
    padding-inline: 1.25rem;
    border-bottom: 1px solid rgba(5, 43, 59, 0.15);
  }

  .purpose h2,
  .industry-head h2,
  .impact-top h2,
  .insights-head h2 {
    font-size: clamp(2.8rem, 13vw, 4.4rem);
  }

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

  .value-grid article:last-child {
    grid-column: auto;
  }

  .value-icon {
    margin-bottom: 2.5rem;
  }

  .solutions-photo,
  .innovation-visual,
  .case-image {
    min-height: 440px;
  }

  .solutions-photo::after {
    inset: 1.25rem;
  }

  .photo-caption {
    left: 2rem;
    right: 2rem;
    bottom: 2rem;
  }

  .solutions-content,
  .innovation-copy,
  .case-copy,
  .contact-copy,
  .contact-form {
    padding: 5.5rem 1.25rem;
  }

  .solutions-content h2,
  .innovation h2,
  .case-copy h2,
  .contact h2 {
    font-size: clamp(2.7rem, 13vw, 4rem);
  }

  .solution-links a {
    grid-template-columns: 2rem 1fr auto;
  }

  .industry-head {
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-bottom: 3rem;
  }

  .industry-head > p {
    grid-column: auto;
  }

  .industry-panel {
    grid-template-columns: 1fr;
  }

  .industry-image {
    min-height: 330px;
  }

  .industry-copy {
    padding: 3rem 1.5rem;
  }

  .innovation-metrics {
    gap: 0.5rem;
  }

  .innovation-metrics strong {
    font-size: 1.05rem;
  }

  .innovation-metrics span {
    font-size: 0.55rem;
  }

  .impact-numbers strong {
    font-size: 2.7rem;
  }

  .case-results {
    gap: 0.8rem;
  }

  .case-results strong {
    font-size: 1.05rem;
  }

  .insights-head {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .insights-head > a {
    grid-column: auto;
  }

  .article-grid {
    grid-template-columns: 1fr;
    gap: 4rem;
  }

  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .footer-main {
    grid-template-columns: 1fr;
  }

  .footer-links {
    grid-template-columns: 1fr 1fr;
    gap: 3rem 1rem;
  }

  .footer-bottom {
    grid-template-columns: 1fr;
  }

  .search-results a {
    grid-template-columns: 1fr auto;
  }

  .search-results small {
    grid-column: 1 / -1;
  }

  .faq-list summary {
    grid-template-columns: 2rem 1fr auto;
  }

  .faq-list details > p {
    margin-left: 3rem;
  }

  .floating-contact {
    display: none;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}