:root {
  --ink: #052b4c;
  --deep: #061b2d;
  --navy: #082f52;
  --blue: #0b56a2;
  --cyan: #12a8c7;
  --cyan-text: #087f99;
  --cyan-strong: #0fd1e8;
  --steel: #6d8192;
  --text: #152c3e;
  --muted: #657583;
  --soft: #f6f9fb;
  --paper: #ffffff;
  --mist: #eaf3f7;
  --line: rgba(5, 43, 76, 0.13);
  --line-strong: rgba(5, 43, 76, 0.22);
  --focus-ring: rgba(18, 168, 199, 0.28);
  --shadow-soft: 0 34px 90px rgba(5, 43, 76, 0.14);
  --shadow-tight: 0 18px 46px rgba(5, 43, 76, 0.1);
  --display-serif: "Songti SC", "STSong", "Noto Serif SC", "Source Han Serif SC", serif;
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei",
    "Helvetica Neue", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-padding-top: 92px;
  scroll-behavior: smooth;
}

body {
  position: relative;
  overflow-x: hidden;
  margin: 0;
  color: var(--text);
  background:
    linear-gradient(180deg, #f8fbfc 0%, #ffffff 36%, #f4f8fb 100%);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background:
    linear-gradient(rgba(5, 43, 76, 0.026) 1px, transparent 1px),
    linear-gradient(90deg, rgba(5, 43, 76, 0.026) 1px, transparent 1px);
  background-size: 76px 76px;
  content: "";
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.62), transparent 66%);
}

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

::selection {
  background: rgba(18, 168, 199, 0.2);
  color: var(--ink);
}

:focus-visible {
  outline: 3px solid var(--focus-ring);
  outline-offset: 4px;
}

button,
input,
textarea {
  font: inherit;
}

.section-shell {
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
}

.skip-link {
  position: fixed;
  top: 14px;
  left: 14px;
  z-index: 80;
  padding: 10px 14px;
  background: var(--ink);
  color: #fff;
  font-size: 14px;
  font-weight: 780;
  opacity: 0;
  transform: translateY(-14px);
  pointer-events: none;
  transition:
    opacity 160ms ease,
    transform 160ms ease;
}

.skip-link:focus-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 30px;
  min-height: 76px;
  padding: 0 max(24px, calc((100vw - 1180px) / 2));
  border-bottom: 1px solid rgba(5, 43, 76, 0.09);
  background: rgba(248, 251, 252, 0.88);
  backdrop-filter: blur(20px);
  transition:
    min-height 180ms ease,
    background 180ms ease,
    box-shadow 180ms ease,
    border-color 180ms ease;
}

.site-header.is-scrolled {
  min-height: 66px;
  border-bottom-color: rgba(5, 43, 76, 0.12);
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 18px 42px rgba(5, 43, 76, 0.08);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand img {
  width: 46px;
  height: 46px;
  object-fit: contain;
}

.brand strong {
  display: block;
  color: var(--ink);
  font-size: 18px;
  font-weight: 780;
  line-height: 1.1;
}

.brand small {
  display: block;
  margin-top: 4px;
  color: #718292;
  font-size: 10px;
  font-weight: 760;
  letter-spacing: 0;
  line-height: 1;
}

.desktop-nav {
  display: flex;
  justify-content: center;
  gap: 34px;
  color: #526878;
  font-size: 14px;
  font-weight: 680;
}

.desktop-nav a {
  position: relative;
  padding: 29px 0;
  transition:
    color 180ms ease,
    padding 180ms ease;
}

.site-header.is-scrolled .desktop-nav a {
  padding: 24px 0;
}

.desktop-nav a::after {
  position: absolute;
  right: 0;
  bottom: 21px;
  left: 0;
  height: 2px;
  background: var(--cyan);
  content: "";
  opacity: 0;
  transform: scaleX(0.45);
  transition: 180ms ease;
}

.desktop-nav a:hover,
.desktop-nav a[aria-current="page"] {
  color: var(--ink);
}

.desktop-nav a:hover::after,
.desktop-nav a[aria-current="page"]::after {
  opacity: 1;
  transform: scaleX(1);
}

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

.incident-link {
  color: var(--ink);
  font-size: 13px;
  font-weight: 780;
  transition: color 180ms ease;
}

.incident-link:hover {
  color: var(--cyan-text);
}

.primary-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 128px;
  height: 42px;
  padding: 0 18px;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: #fff;
  font-size: 14px;
  font-weight: 780;
  transition:
    background 180ms ease,
    border-color 180ms ease,
    transform 180ms ease;
}

.primary-link:hover {
  border-color: var(--cyan);
  background: var(--navy);
  transform: translateY(-1px);
}

.menu-button,
.mobile-nav {
  display: none;
}

.hero {
  position: relative;
  isolation: isolate;
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(500px, 1fr);
  gap: 68px;
  align-items: center;
  min-height: min(690px, calc(100svh - 76px));
  padding: 64px 0 56px;
}

.hero::before {
  position: absolute;
  top: 0;
  bottom: -64px;
  left: 50%;
  z-index: -2;
  width: 100vw;
  background:
    linear-gradient(112deg, rgba(255, 255, 255, 0.98) 0%, rgba(246, 250, 252, 0.98) 45%, rgba(224, 240, 246, 0.92) 100%),
    linear-gradient(90deg, rgba(5, 43, 76, 0.05) 1px, transparent 1px),
    linear-gradient(rgba(5, 43, 76, 0.04) 1px, transparent 1px);
  background-size: auto, 94px 94px, 94px 94px;
  content: "";
  transform: translateX(-50%);
}

.hero::after {
  position: absolute;
  right: calc(50% - 50vw);
  bottom: 0;
  left: calc(50% - 50vw);
  z-index: -1;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(5, 43, 76, 0.18), transparent);
  content: "";
}

.hero-copy {
  width: min(660px, 100%);
  animation: rise-in 620ms ease both;
}

.hero-copy h1 {
  max-width: 610px;
  margin: 0;
  color: var(--ink);
  font-family: var(--display-serif);
  font-size: clamp(58px, 6.8vw, 102px);
  font-weight: 600;
  letter-spacing: 0;
  line-height: 1.02;
}

.hero-copy p {
  max-width: 640px;
  margin: 30px 0 0;
  color: #3c5669;
  font-size: 18px;
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 38px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 140px;
  min-height: 50px;
  padding: 0 24px;
  border: 1px solid var(--ink);
  color: var(--ink);
  font-size: 15px;
  font-weight: 780;
  cursor: pointer;
  transition:
    transform 180ms ease,
    background 180ms ease,
    color 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button:active {
  transform: translateY(0);
}

.button.primary {
  border-color: var(--ink);
  background: var(--ink);
  color: #fff;
  box-shadow: 0 14px 34px rgba(5, 43, 76, 0.18);
}

.button.secondary {
  border-color: var(--ink);
  background: rgba(255, 255, 255, 0.66);
  color: var(--ink);
}

.button.secondary:hover {
  border-color: var(--cyan);
  color: #087f9b;
  box-shadow: 0 12px 28px rgba(18, 168, 199, 0.12);
}

.hero-proof {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  max-width: 680px;
  margin: 58px 0 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.hero-proof div {
  min-height: 100px;
  padding: 20px 24px 18px;
  border-right: 1px solid var(--line);
}

.hero-proof div:first-child {
  padding-left: 0;
}

.hero-proof div:last-child {
  border-right: 0;
}

.hero-proof dt {
  color: var(--cyan-text);
  font-size: 13px;
  font-weight: 880;
}

.hero-proof dd {
  margin: 14px 0 0;
  color: var(--ink);
  font-size: 15px;
  font-weight: 760;
  line-height: 1.45;
}

.hero-visual {
  position: relative;
  min-height: 520px;
  animation: rise-in 720ms 80ms ease both;
}

.hero-visual::before {
  position: absolute;
  inset: 54px -18px 18px 68px;
  background:
    linear-gradient(135deg, rgba(18, 168, 199, 0.12), rgba(5, 43, 76, 0.02));
  content: "";
}

.visual-frame {
  position: relative;
  min-height: 492px;
  padding: 24px;
  border: 1px solid rgba(5, 43, 76, 0.14);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(239, 249, 252, 0.88));
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.visual-frame::before {
  position: absolute;
  inset: 24px;
  border: 1px solid rgba(5, 43, 76, 0.08);
  background:
    linear-gradient(90deg, rgba(5, 43, 76, 0.055) 1px, transparent 1px),
    linear-gradient(rgba(5, 43, 76, 0.045) 1px, transparent 1px);
  background-size: 74px 74px;
  content: "";
}

.visual-header {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 28px;
  align-items: center;
  min-height: 34px;
  color: #5e7585;
  font-size: 11px;
  font-weight: 880;
}

.visual-header i {
  justify-self: center;
  width: 54px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
}

.visual-grid {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  min-height: 340px;
  margin-top: 18px;
  overflow: hidden;
}

.visual-grid::before,
.visual-grid::after {
  position: absolute;
  border: 1px solid rgba(18, 168, 199, 0.18);
  border-radius: 50%;
  content: "";
}

.visual-grid::before {
  right: 18px;
  top: 22px;
  width: 220px;
  height: 220px;
}

.visual-grid::after {
  left: 8px;
  bottom: 4px;
  width: 150px;
  height: 150px;
}

.visual-image {
  position: relative;
  z-index: 0;
  width: 100%;
  height: 340px;
  object-fit: cover;
  object-position: center;
  opacity: 0.98;
}

.visual-card {
  position: absolute;
  z-index: 2;
  min-width: 228px;
  padding: 16px 18px;
  border: 1px solid rgba(5, 43, 76, 0.1);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  box-shadow: 0 18px 44px rgba(5, 43, 76, 0.12);
  transition:
    border-color 180ms ease,
    box-shadow 180ms ease,
    transform 180ms ease;
}

.visual-card::before {
  display: block;
  width: 34px;
  height: 2px;
  margin-bottom: 12px;
  background: var(--cyan);
  content: "";
}

.hero-visual:hover .scope-card {
  transform: translate(-4px, -3px);
}

.hero-visual:hover .path-card {
  transform: translate(4px, 3px);
}

.scope-card {
  top: 24px;
  left: 22px;
}

.path-card {
  right: 10px;
  bottom: 26px;
}

.visual-card strong {
  display: block;
  color: var(--ink);
  font-size: 13px;
  line-height: 1.3;
}

.visual-card span {
  display: block;
  margin-top: 8px;
  color: #647889;
  font-size: 12px;
  font-weight: 680;
  line-height: 1.35;
}

.visual-footer {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 18px;
  color: #617988;
  font-size: 12px;
  font-weight: 860;
}

.visual-footer span:nth-child(2) {
  text-align: center;
}

.visual-footer span:last-child {
  text-align: right;
}

.section-heading {
  display: grid;
  grid-template-columns: 170px minmax(0, 1fr);
  gap: 48px;
  align-items: start;
}

.section-heading.compact {
  max-width: 940px;
}

.section-index {
  margin: 7px 0 0;
  color: var(--cyan-text);
  font-size: 13px;
  font-weight: 880;
}

.section-heading h2,
.service-intro h2,
.about-layout h2,
.contact-copy h2 {
  margin: 0;
  color: var(--ink);
  font-family: var(--display-serif);
  font-size: clamp(31px, 3.55vw, 52px);
  font-weight: 600;
  line-height: 1.18;
}

.products .section-heading h2 {
  font-size: clamp(31px, 3.33vw, 48px);
}

.section-heading > p:last-child {
  grid-column: 2;
  max-width: 620px;
  margin: -28px 0 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.78;
}

.products {
  position: relative;
  isolation: isolate;
  padding: 82px 0 124px;
  content-visibility: auto;
  contain-intrinsic-size: 760px;
}

.products::before {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  z-index: -1;
  width: 100vw;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.86), rgba(246, 250, 252, 0.98));
  content: "";
  transform: translateX(-50%);
}

.product-showcase {
  display: grid;
  grid-template-columns: 1.12fr 0.94fr 0.94fr;
  gap: 0;
  margin-top: 54px;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
  box-shadow: 0 24px 80px rgba(5, 43, 76, 0.08);
}

.product-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 430px;
  padding: 30px;
  overflow: hidden;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(145deg, #f7fbfd 0%, #eef7fb 100%);
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    background 180ms ease;
}

.product-card::before {
  position: absolute;
  right: -100px;
  bottom: -130px;
  width: 280px;
  height: 280px;
  border: 1px solid rgba(18, 168, 199, 0.18);
  border-radius: 50%;
  content: "";
}

.product-card:hover,
.product-card:focus-within {
  z-index: 2;
  box-shadow: var(--shadow-tight);
  transform: translateY(-4px);
}

.product-card:nth-child(1) {
  background:
    linear-gradient(145deg, #061b2d 0%, #052b4c 55%, #073a62 100%);
  color: #fff;
}

.product-card:nth-child(2) {
  background:
    linear-gradient(145deg, #f8fcfd 0%, #eaf6fb 62%, #dceff7 100%);
}

.product-card:nth-child(3) {
  background:
    linear-gradient(145deg, #ffffff 0%, #f1f7fb 56%, #e6f2f7 100%);
}

.product-card:first-child::after {
  position: absolute;
  right: -52px;
  bottom: -34px;
  width: 270px;
  height: 250px;
  background: url("./assets/chengan-ca-logo.png") center / contain no-repeat;
  content: "";
  opacity: 0.13;
}

.product-head {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.product-logo-frame {
  display: grid;
  flex: 0 0 auto;
  place-items: center;
  width: 86px;
  height: 86px;
  border: 0;
  background: transparent;
  isolation: isolate;
}

.product-logo-frame img {
  display: block;
  width: 78%;
  height: 78%;
  object-fit: contain;
}

.yingshu-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(74, 206, 232, 0.42);
  background:
    linear-gradient(145deg, rgba(74, 206, 232, 0.22), rgba(255, 255, 255, 0.04));
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.08),
    0 18px 42px rgba(0, 0, 0, 0.18);
}

.yingshu-frame::before {
  position: absolute;
  inset: 14px -24px auto auto;
  width: 78px;
  height: 1px;
  background: rgba(74, 206, 232, 0.42);
  content: "";
  transform: rotate(-38deg);
}

.yingshu-frame::after {
  position: absolute;
  right: -18px;
  bottom: -22px;
  width: 64px;
  height: 64px;
  border: 1px solid rgba(74, 206, 232, 0.28);
  border-radius: 50%;
  content: "";
}

.yingshu-frame span {
  position: relative;
  z-index: 1;
  color: #f5fdff;
  font-size: 22px;
  font-weight: 760;
  letter-spacing: 0;
  text-shadow: 0 0 18px rgba(74, 206, 232, 0.32);
}

.bla-frame img {
  width: 78%;
  height: auto;
}

.aethra-frame img {
  width: 70%;
  height: 70%;
}

.product-head span {
  color: var(--cyan-text);
  font-size: 12px;
  font-weight: 880;
  line-height: 1.3;
  text-align: right;
}

.product-card:nth-child(1) .product-head span {
  color: var(--cyan-strong);
}

.product-card h3 {
  position: relative;
  z-index: 1;
  margin: 42px 0 0;
  color: var(--ink);
  font-family: var(--display-serif);
  font-size: 31px;
  font-weight: 600;
  line-height: 1.08;
}

.product-card:nth-child(1) h3 {
  color: #fff;
}

.product-card p {
  position: relative;
  z-index: 1;
  margin: 22px 0 0;
  color: #5e7180;
  font-size: 15px;
  line-height: 1.86;
}

.product-card:nth-child(1) p {
  color: rgba(255, 255, 255, 0.74);
}

.product-card ul {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 10px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.product-card li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #516777;
  font-size: 14px;
  font-weight: 680;
}

.product-card:nth-child(1) li {
  color: rgba(255, 255, 255, 0.76);
}

.product-card li::before {
  flex: 0 0 auto;
  width: 6px;
  height: 6px;
  background: var(--cyan);
  content: "";
}

.product-card .card-action {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  width: fit-content;
  margin-top: auto;
  padding-top: 28px;
  color: #0787a3;
  font-size: 14px;
  font-weight: 860;
}

.product-card .card-action::after,
.insight-list a::after {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-top: 2px solid currentColor;
  border-right: 2px solid currentColor;
  content: "";
  transform: rotate(45deg);
  transition: transform 180ms ease;
}

.insight-list a::after {
  position: absolute;
  right: 39px;
  bottom: 37px;
}

.product-card:hover .card-action::after,
.product-card:focus-visible .card-action::after,
.insight-list a:hover::after,
.insight-list a:focus-visible::after {
  transform: translateX(4px) rotate(45deg);
}

.product-card:nth-child(1) .card-action {
  color: var(--cyan-strong);
}

.service-band {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: 124px 0;
  background:
    linear-gradient(135deg, #061b2d 0%, #052b4c 57%, #073b64 100%);
  color: #fff;
}

.service-band::before {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 88px 88px;
  content: "";
  mask-image: linear-gradient(90deg, transparent, #000 18%, #000 82%, transparent);
}

.service-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(520px, 1fr);
  gap: 78px;
  align-items: start;
}

.service-intro h2 {
  color: #fff;
}

.service-intro > p:last-child {
  max-width: 520px;
  margin: 26px 0 0;
  color: rgba(255, 255, 255, 0.68);
  font-size: 16px;
  line-height: 1.82;
}

.service-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid rgba(255, 255, 255, 0.16);
  border-left: 1px solid rgba(255, 255, 255, 0.16);
}

.service-list article {
  min-height: 240px;
  padding: 30px;
  border-right: 1px solid rgba(255, 255, 255, 0.16);
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(3, 18, 31, 0.34);
}

.service-list span,
.method-chain span {
  color: var(--cyan-strong);
  font-size: 12px;
  font-weight: 880;
}

.service-list h3 {
  margin: 48px 0 0;
  font-family: var(--display-serif);
  font-size: 23px;
  font-weight: 600;
  line-height: 1.2;
}

.service-list p {
  margin: 17px 0 0;
  color: rgba(255, 255, 255, 0.68);
  font-size: 14px;
  line-height: 1.78;
}

.method {
  padding: 124px 0;
}

.method-chain {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  margin-top: 56px;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.method-chain article {
  position: relative;
  min-height: 264px;
  padding: 30px 24px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.9), rgba(247, 250, 252, 0.78));
}

.method-chain article::after {
  position: absolute;
  top: 41px;
  right: -16px;
  z-index: 2;
  width: 31px;
  height: 1px;
  background: var(--cyan);
  content: "";
}

.method-chain article:last-child::after {
  display: none;
}

.method-chain h3 {
  margin: 48px 0 0;
  color: var(--ink);
  font-family: var(--display-serif);
  font-size: 22px;
  font-weight: 600;
}

.method-chain p {
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.78;
}

.insights {
  padding: 0 0 124px;
}

.insights-preview {
  padding-bottom: 96px;
}

.insight-entry {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 34px 44px;
  align-items: center;
  padding: 34px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.insight-entry h2 {
  max-width: 720px;
  margin: 14px 0 0;
  color: var(--ink);
  font-family: var(--display-serif);
  font-size: clamp(30px, 3.05vw, 44px);
  font-weight: 600;
  line-height: 1.18;
}

.insight-entry p:not(.section-index) {
  max-width: 660px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}

.insight-entry > .button {
  justify-self: end;
}

.insight-entry-topics {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line);
}

.insight-entry-topics span {
  padding: 18px 0 0;
  color: var(--cyan-text);
  font-size: 13px;
  font-weight: 820;
}

.insights-hub {
  background:
    linear-gradient(180deg, rgba(234, 243, 247, 0.42), transparent 360px),
    linear-gradient(180deg, #f8fbfc 0%, #ffffff 42%, #f4f8fb 100%);
}

.insights-hub-hero {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 0.46fr);
  gap: 72px;
  align-items: end;
  padding: 96px 0 76px;
}

.insights-hub-copy h1 {
  max-width: 760px;
  margin: 18px 0 0;
  color: var(--ink);
  font-family: var(--display-serif);
  font-size: clamp(44px, 5vw, 76px);
  font-weight: 600;
  line-height: 1.08;
}

.insights-hub-copy > p:last-child {
  max-width: 680px;
  margin: 30px 0 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.9;
}

.insights-hub-note {
  position: relative;
  padding: 28px;
  border: 1px solid var(--line);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.96), rgba(239, 248, 251, 0.78));
  box-shadow: 0 24px 70px rgba(5, 43, 76, 0.08);
}

.insights-hub-note::before {
  position: absolute;
  top: 0;
  left: 28px;
  width: 48px;
  height: 3px;
  background: var(--cyan);
  content: "";
}

.insights-hub-note > span {
  display: block;
  color: var(--cyan-text);
  font-size: 12px;
  font-weight: 860;
}

.insights-hub-note dl {
  display: grid;
  gap: 20px;
  margin: 26px 0 0;
}

.insights-hub-note div {
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.insights-hub-note dt {
  color: var(--ink);
  font-size: 15px;
  font-weight: 860;
}

.insights-hub-note dd {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

.insight-hub-section {
  padding: 42px 0 106px;
}

.insight-hub-list {
  display: grid;
  gap: 16px;
  margin-top: 42px;
}

.insight-hub-card {
  position: relative;
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr) 190px;
  gap: 28px;
  align-items: start;
  min-height: 166px;
  padding: 28px 78px 28px 28px;
  border: 1px solid var(--line);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.98), rgba(246, 250, 252, 0.84));
  transition:
    border-color 180ms ease,
    box-shadow 180ms ease,
    transform 180ms ease;
}

.insight-hub-card:hover,
.insight-hub-card:focus-visible {
  border-color: rgba(18, 168, 199, 0.36);
  box-shadow: 0 18px 54px rgba(5, 43, 76, 0.09);
  transform: translateY(-2px);
}

.insight-hub-card.primary {
  background:
    radial-gradient(circle at 94% 78%, rgba(18, 168, 199, 0.18), transparent 32%),
    linear-gradient(135deg, #052b4c, #07365d);
}

.insight-hub-card span {
  color: var(--cyan-text);
  font-size: 13px;
  font-weight: 880;
}

.insight-hub-card.primary span {
  color: var(--cyan-strong);
}

.insight-hub-card strong {
  max-width: 520px;
  color: var(--ink);
  font-family: var(--display-serif);
  font-size: 28px;
  font-weight: 600;
  line-height: 1.28;
}

.insight-hub-card p {
  grid-column: 2;
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.78;
}

.insight-hub-card small {
  grid-column: 3;
  grid-row: 1 / span 2;
  align-self: end;
  color: #718593;
  font-size: 13px;
  line-height: 1.6;
}

.insight-hub-card.primary strong,
.insight-hub-card.primary p,
.insight-hub-card.primary small {
  color: rgba(255, 255, 255, 0.78);
}

.insight-hub-card.primary strong {
  color: #fff;
}

.insight-hub-card::after {
  position: absolute;
  right: 30px;
  bottom: 32px;
  width: 9px;
  height: 9px;
  border-top: 2px solid currentColor;
  border-right: 2px solid currentColor;
  color: var(--cyan-text);
  content: "";
  transform: rotate(45deg);
  transition: transform 180ms ease;
}

.insight-hub-card.primary::after {
  color: var(--cyan-strong);
}

.insight-hub-card:hover::after,
.insight-hub-card:focus-visible::after {
  transform: translateX(4px) rotate(45deg);
}

.insight-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 52px;
}

.insight-list a {
  position: relative;
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 26px;
  min-height: 230px;
  padding: 28px;
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(246, 250, 252, 0.82));
  transition:
    border-color 180ms ease,
    background 180ms ease,
    box-shadow 180ms ease,
    transform 180ms ease;
}

.insight-list a:hover {
  border-color: rgba(18, 168, 199, 0.34);
  background: #fff;
  box-shadow: 0 20px 54px rgba(5, 43, 76, 0.1);
  transform: translateY(-3px);
}

.insight-list span {
  color: var(--cyan);
  font-size: 13px;
  font-weight: 880;
}

.insight-list strong {
  max-width: 300px;
  color: var(--ink);
  font-family: var(--display-serif);
  font-size: 24px;
  font-weight: 600;
  line-height: 1.36;
}

.insight-list small {
  align-self: end;
  color: #70808c;
  font-size: 13px;
  line-height: 1.5;
  text-align: left;
}

.insight-list a::before {
  position: absolute;
  right: 26px;
  bottom: 24px;
  width: 34px;
  height: 34px;
  border: 1px solid rgba(5, 43, 76, 0.16);
  content: "";
}

.insight-list a:hover::before {
  border-color: var(--cyan);
}

.about-band {
  position: relative;
  padding: 106px 0;
  background: #fff;
}

.about-band::before {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line), transparent);
  content: "";
}

.about-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(360px, 0.72fr);
  gap: 64px;
  align-items: center;
}

.about-layout > div {
  min-width: 0;
}

.about-layout h2 {
  display: flex;
  flex-wrap: wrap;
  column-gap: 28px;
  row-gap: 8px;
  max-width: 600px;
  margin-top: 16px;
  font-size: 46px;
  line-height: 1.22;
}

.contact-copy h2 {
  max-width: 720px;
  font-size: clamp(32px, 3.15vw, 46px);
}

.about-layout h2 span {
  white-space: nowrap;
}

.about-layout p:last-child {
  margin: 0;
  color: #4f6473;
  font-size: 18px;
  line-height: 2;
}

.contact {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(420px, 0.7fr);
  gap: 76px;
  padding: 124px 0;
}

.contact-copy p:last-child {
  max-width: 610px;
  margin: 28px 0 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.82;
}

.contact-form {
  display: grid;
  gap: 18px;
  padding: 34px;
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(248, 251, 252, 0.92));
  box-shadow: var(--shadow-tight);
}

.contact-form label {
  display: grid;
  gap: 8px;
}

.contact-form span {
  color: var(--ink);
  font-size: 13px;
  font-weight: 880;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 14px 15px;
  border: 1px solid rgba(5, 43, 76, 0.16);
  background: #fff;
  color: var(--text);
  outline: none;
  resize: vertical;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(18, 168, 199, 0.08);
}

.contact-form button {
  width: 100%;
  margin-top: 4px;
}

.site-footer {
  border-top: 1px solid var(--line);
  background: #061b2d;
  color: #fff;
}

.footer-layout {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 30px;
  align-items: center;
  min-height: 124px;
}

.footer-brand strong {
  color: #fff;
}

.footer-brand small {
  color: rgba(255, 255, 255, 0.55);
}

.site-footer p {
  margin: 0;
  color: rgba(255, 255, 255, 0.68);
}

.site-footer nav {
  display: flex;
  gap: 22px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 14px;
}

.footer-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  align-items: center;
  min-height: 54px;
  padding: 0 0 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.48);
  font-size: 12px;
  line-height: 1.8;
}

.footer-meta a {
  color: rgba(255, 255, 255, 0.58);
  transition: color 180ms ease;
}

.footer-meta a:hover {
  color: #fff;
}

.error-main {
  min-height: calc(100svh - 254px);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(238, 248, 252, 0.92)),
    linear-gradient(90deg, rgba(5, 43, 76, 0.035) 1px, transparent 1px),
    linear-gradient(rgba(5, 43, 76, 0.03) 1px, transparent 1px);
  background-size: auto, 92px 92px, 92px 92px;
}

.error-hero {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(360px, 0.58fr);
  gap: clamp(44px, 6vw, 86px);
  align-items: center;
  min-height: calc(100svh - 254px);
  padding: 82px 0 92px;
}

.error-copy {
  min-width: 0;
}

.error-copy h1 {
  max-width: none;
  margin: 18px 0 0;
  color: var(--ink);
  font-family: var(--display-serif);
  font-size: 64px;
  font-weight: 600;
  line-height: 1.08;
  white-space: nowrap;
  word-break: keep-all;
}

.error-copy > p:last-of-type {
  max-width: 650px;
  margin: 28px 0 0;
  color: #4f6473;
  font-size: 18px;
  line-height: 1.9;
}

.error-message {
  display: grid;
  gap: 6px;
}

.error-message span {
  display: block;
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 36px;
}

.error-panel {
  position: relative;
  min-height: 390px;
  padding: 32px;
  overflow: hidden;
  border: 1px solid rgba(5, 43, 76, 0.14);
  background:
    linear-gradient(145deg, rgba(6, 27, 45, 0.98), rgba(5, 43, 76, 0.96) 58%, rgba(7, 58, 98, 0.94));
  box-shadow: var(--shadow-soft);
  color: #fff;
}

.error-panel::before {
  position: absolute;
  inset: 24px;
  border: 1px solid rgba(74, 206, 232, 0.2);
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.055) 1px, transparent 1px),
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 56px 56px;
  content: "";
}

.error-panel::after {
  position: absolute;
  right: -70px;
  bottom: -82px;
  width: 250px;
  height: 250px;
  border: 1px solid rgba(18, 168, 199, 0.28);
  border-radius: 50%;
  content: "";
}

.error-code {
  position: relative;
  z-index: 1;
  display: block;
  color: rgba(255, 255, 255, 0.92);
  font-family: var(--display-serif);
  font-size: clamp(76px, 9vw, 126px);
  font-weight: 600;
  line-height: 1;
}

.error-panel dl {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 0;
  margin: 48px 0 0;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
}

.error-panel dl div {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 22px;
  padding: 18px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

.error-panel dt {
  color: var(--cyan-strong);
  font-size: 12px;
  font-weight: 880;
}

.error-panel dd {
  margin: 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: 14px;
  line-height: 1.65;
}

.error-lines {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 10px;
  width: 52%;
  margin-top: 34px;
}

.error-lines span {
  display: block;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), transparent);
}

.error-lines span:nth-child(2) {
  width: 74%;
}

.error-lines span:nth-child(3) {
  width: 42%;
}

.detail-main {
  background:
    linear-gradient(180deg, #f8fbfc 0%, #fff 34%, #f4f8fb 100%);
}

.detail-hero {
  position: relative;
  isolation: isolate;
  display: grid;
  grid-template-columns: 170px minmax(0, 1fr);
  gap: 54px;
  align-items: start;
  padding: 96px 0 74px;
}

.detail-hero::before {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  z-index: -1;
  width: 100vw;
  background:
    linear-gradient(112deg, rgba(255, 255, 255, 0.98), rgba(237, 248, 252, 0.92)),
    linear-gradient(90deg, rgba(5, 43, 76, 0.035) 1px, transparent 1px),
    linear-gradient(rgba(5, 43, 76, 0.03) 1px, transparent 1px);
  background-size: auto, 92px 92px, 92px 92px;
  content: "";
  transform: translateX(-50%);
}

.detail-kicker {
  display: grid;
  gap: 14px;
  color: var(--cyan-text);
  font-size: 13px;
  font-weight: 880;
  line-height: 1.5;
}

.detail-kicker::before {
  width: 42px;
  height: 2px;
  background: var(--cyan);
  content: "";
}

.detail-hero h1 {
  max-width: 900px;
  margin: 0;
  color: var(--ink);
  font-family: var(--display-serif);
  font-size: clamp(44px, 5.2vw, 74px);
  font-weight: 600;
  line-height: 1.12;
  overflow-wrap: anywhere;
}

.detail-hero-copy {
  min-width: 0;
}

.detail-lede {
  max-width: 760px;
  margin: 28px 0 0;
  color: #4f6473;
  font-size: 18px;
  line-height: 1.9;
  overflow-wrap: anywhere;
}

.detail-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.detail-proof {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  margin-top: 54px;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.detail-proof div {
  min-height: 116px;
  padding: 22px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.72);
}

.detail-proof dt {
  color: var(--cyan-text);
  font-size: 12px;
  font-weight: 880;
}

.detail-proof dd {
  margin: 16px 0 0;
  color: var(--ink);
  font-size: 18px;
  font-weight: 760;
  line-height: 1.35;
}

.detail-section {
  padding: 96px 0;
}

.detail-section + .detail-section {
  border-top: 1px solid var(--line);
}

.detail-section-head {
  display: grid;
  grid-template-columns: 170px minmax(0, 1fr);
  gap: 48px;
  align-items: start;
  margin-bottom: 44px;
}

.detail-section-head h2 {
  margin: 0;
  color: var(--ink);
  font-family: var(--display-serif);
  font-size: clamp(32px, 3.4vw, 48px);
  font-weight: 600;
  line-height: 1.18;
}

.detail-section-head p {
  max-width: 690px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.82;
}

.detail-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.detail-card {
  min-height: 230px;
  padding: 28px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(246, 250, 252, 0.86));
}

.detail-card span {
  color: var(--cyan-text);
  font-size: 12px;
  font-weight: 880;
}

.detail-card h3 {
  margin: 46px 0 0;
  color: var(--ink);
  font-family: var(--display-serif);
  font-size: 24px;
  font-weight: 600;
  line-height: 1.25;
}

.detail-card p {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.78;
}

.detail-flow {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.detail-flow li {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr) 220px;
  gap: 32px;
  align-items: center;
  min-height: 96px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  list-style: none;
}

.detail-flow strong {
  color: var(--ink);
  font-family: var(--display-serif);
  font-size: 23px;
  font-weight: 600;
}

.detail-flow em {
  color: var(--cyan-text);
  font-style: normal;
  font-size: 12px;
  font-weight: 880;
}

.detail-flow span:last-child {
  text-align: right;
}

.detail-cta {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 32px;
  align-items: center;
  padding: 44px 0 104px;
  border-top: 1px solid var(--line);
}

.detail-cta h2 {
  max-width: 760px;
  margin: 0;
  color: var(--ink);
  font-family: var(--display-serif);
  font-size: clamp(34px, 4vw, 54px);
  font-weight: 600;
  line-height: 1.18;
}

.yingshu-cta h2 {
  max-width: none;
  font-size: clamp(34px, 3.25vw, 44px);
  white-space: nowrap;
}

.detail-cta p {
  max-width: 650px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.82;
}

.product-detail .detail-hero {
  grid-template-columns: minmax(430px, 0.78fr) minmax(430px, 0.86fr);
  column-gap: clamp(44px, 5vw, 74px);
  row-gap: 24px;
  align-items: center;
  padding-top: 76px;
  padding-bottom: 76px;
}

.product-detail .detail-kicker {
  grid-column: 1;
  align-self: end;
  margin: 0 0 -10px;
}

.product-detail .detail-hero-copy {
  grid-column: 1;
}

.product-detail .product-visual {
  grid-row: 1 / span 2;
  grid-column: 2;
}

.product-detail .detail-hero h1 {
  max-width: 620px;
  font-size: clamp(36px, 3.35vw, 50px);
  line-height: 1.16;
}

.insight-detail .detail-hero h1 {
  max-width: 760px;
  font-size: clamp(40px, 4.1vw, 60px);
}

.product-visual {
  position: relative;
  min-width: 0;
  padding: 16px;
  border: 1px solid rgba(5, 43, 76, 0.13);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(239, 249, 252, 0.9));
  box-shadow: 0 28px 70px rgba(5, 43, 76, 0.12);
}

.product-visual::before {
  position: absolute;
  right: -28px;
  bottom: -28px;
  z-index: -1;
  width: 44%;
  height: 55%;
  border: 1px solid rgba(18, 168, 199, 0.2);
  background: rgba(18, 168, 199, 0.08);
  content: "";
}

.product-visual-head {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 3px 2px 14px;
  color: #667a88;
  font-size: 11px;
  font-weight: 860;
}

.product-shot {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  max-height: 380px;
  border: 1px solid rgba(5, 43, 76, 0.12);
  background: #fff;
  object-fit: cover;
  object-position: top center;
}

.product-visual-note {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  margin-top: 14px;
  border-top: 1px solid var(--line);
}

.product-visual-note span {
  padding: 13px 12px 0;
  color: #5c7180;
  font-size: 12px;
  font-weight: 760;
  line-height: 1.35;
}

.product-visual-note span:first-child {
  padding-left: 0;
}

.product-metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.product-metrics div {
  min-height: 118px;
  padding: 22px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.78);
}

.product-metrics strong {
  display: block;
  color: var(--ink);
  font-family: var(--display-serif);
  font-size: 28px;
  font-weight: 600;
  line-height: 1.1;
}

.product-metrics span {
  display: block;
  margin-top: 12px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.interface-showcase {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.42fr);
  gap: 22px;
  align-items: stretch;
}

.interface-frame {
  padding: 14px;
  border: 1px solid var(--line);
  background: #fff;
  box-shadow: 0 24px 70px rgba(5, 43, 76, 0.08);
}

.interface-frame img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  object-position: top center;
}

.interface-copy {
  display: grid;
  align-content: start;
  gap: 14px;
  padding: 26px;
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(247, 250, 252, 0.88));
}

.interface-copy h3 {
  margin: 0;
  color: var(--ink);
  font-family: var(--display-serif);
  font-size: 28px;
  font-weight: 600;
  line-height: 1.22;
}

.interface-copy p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.78;
}

.interface-copy ul {
  display: grid;
  gap: 11px;
  margin: 10px 0 0;
  padding: 0;
  list-style: none;
}

.interface-copy li {
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
}

.interface-copy li::before {
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 10px;
  background: var(--cyan);
  content: "";
  transform: translateY(-1px);
}

.insight-detail .detail-hero {
  grid-template-columns: 140px minmax(0, 0.8fr) minmax(330px, 0.5fr);
  gap: 42px;
  align-items: center;
  padding-bottom: 86px;
}

.insight-panel {
  position: relative;
  min-width: 0;
  padding: 26px;
  border: 1px solid rgba(5, 43, 76, 0.14);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(239, 248, 251, 0.88));
  box-shadow: 0 26px 72px rgba(5, 43, 76, 0.1);
}

.insight-panel::before {
  position: absolute;
  right: -20px;
  bottom: -20px;
  z-index: -1;
  width: 58%;
  height: 42%;
  border: 1px solid rgba(18, 168, 199, 0.18);
  background: rgba(18, 168, 199, 0.07);
  content: "";
}

.insight-panel-head {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.insight-panel-head span {
  color: var(--cyan-text);
  font-size: 12px;
  font-weight: 880;
}

.insight-panel-head strong {
  color: var(--ink);
  font-size: 12px;
  font-weight: 860;
}

.insight-timeline {
  display: grid;
  gap: 0;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.insight-timeline li {
  position: relative;
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr);
  gap: 16px;
  min-height: 82px;
  padding-bottom: 18px;
}

.insight-timeline li::before {
  position: absolute;
  top: 8px;
  bottom: 0;
  left: 70px;
  width: 1px;
  background: rgba(5, 43, 76, 0.14);
  content: "";
}

.insight-timeline li::after {
  position: absolute;
  top: 5px;
  left: 66px;
  width: 9px;
  height: 9px;
  background: var(--cyan);
  content: "";
}

.insight-timeline li:last-child {
  min-height: auto;
  padding-bottom: 0;
}

.insight-timeline li:last-child::before {
  display: none;
}

.insight-timeline span {
  color: #718391;
  font-size: 12px;
  font-weight: 780;
}

.insight-timeline strong,
.insight-timeline em {
  display: block;
  font-style: normal;
}

.insight-timeline strong {
  color: var(--ink);
  font-family: var(--display-serif);
  font-size: 21px;
  font-weight: 600;
  line-height: 1.2;
}

.insight-timeline em {
  margin-top: 8px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.4;
}

.insight-panel-foot {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 24px;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.insight-panel-foot div {
  min-height: 76px;
  padding: 14px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.7);
}

.insight-panel-foot span {
  display: block;
  color: #718391;
  font-size: 11px;
  font-weight: 760;
}

.insight-panel-foot strong {
  display: block;
  margin-top: 9px;
  color: var(--ink);
  font-family: var(--display-serif);
  font-size: 22px;
  font-weight: 600;
}

.insight-brief {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  margin-top: 42px;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.insight-brief div {
  min-height: 150px;
  padding: 24px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.74);
}

.insight-brief strong {
  display: block;
  color: var(--ink);
  font-family: var(--display-serif);
  font-size: 22px;
  font-weight: 600;
}

.insight-brief span {
  display: block;
  margin-top: 14px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

.method-board {
  display: grid;
  grid-template-columns: 0.78fr 1fr;
  gap: 0;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.method-board > article {
  min-height: 320px;
  padding: 32px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(246, 250, 252, 0.84));
}

.method-board > article:first-child {
  background:
    linear-gradient(145deg, #061b2d 0%, #052b4c 64%, #073a62 100%);
  color: #fff;
}

.method-board h3 {
  margin: 0;
  color: inherit;
  font-family: var(--display-serif);
  font-size: 31px;
  font-weight: 600;
  line-height: 1.2;
}

.method-board p {
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.85;
}

.method-board > article:first-child p {
  color: rgba(255, 255, 255, 0.72);
}

.method-board ul {
  display: grid;
  gap: 13px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.method-board li {
  color: #536879;
  font-size: 14px;
  line-height: 1.55;
}

.method-board > article:first-child li {
  color: rgba(255, 255, 255, 0.78);
}

.method-board li::before {
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 10px;
  background: var(--cyan);
  content: "";
  transform: translateY(-1px);
}

@media (max-width: 1100px) {
  .hero {
    grid-template-columns: minmax(0, 0.92fr) minmax(420px, 1fr);
    gap: 48px;
  }

  .hero-copy h1 {
    font-size: 66px;
  }

  .hero-visual {
    min-height: 470px;
  }

  .visual-frame {
    min-height: 450px;
    padding: 22px;
  }

  .visual-grid {
    min-height: 306px;
  }

  .visual-image {
    height: 306px;
  }

  .visual-card {
    min-width: 205px;
  }
}

@media (max-width: 980px) {
  .site-header {
    grid-template-columns: auto auto;
    justify-content: space-between;
  }

  .desktop-nav,
  .incident-link,
  .primary-link {
    display: none;
  }

  .menu-button {
    display: inline-grid;
    gap: 4px;
    place-items: center;
    width: 44px;
    height: 44px;
    border: 1px solid var(--line);
    background: #fff;
    cursor: pointer;
  }

  .menu-button span {
    width: 18px;
    height: 2px;
    background: var(--ink);
  }

  .mobile-nav {
    position: absolute;
    top: 76px;
    right: 24px;
    left: 24px;
    display: none;
    padding: 18px;
    border: 1px solid var(--line);
    background: #fff;
    box-shadow: var(--shadow-tight);
  }

  .mobile-nav.open {
    display: grid;
  }

  .mobile-nav a {
    padding: 13px 4px;
    border-bottom: 1px solid var(--line);
    color: var(--ink);
    font-weight: 760;
  }

  .mobile-nav a:last-child {
    border-bottom: 0;
  }

  .hero,
  .service-layout,
  .contact,
  .about-layout,
  .error-hero,
  .detail-hero,
  .detail-section-head,
  .detail-cta,
  .insight-entry,
  .insights-hub-hero,
  .product-detail .detail-hero,
  .insight-detail .detail-hero,
  .interface-showcase,
  .method-board {
    grid-template-columns: 1fr;
  }

  .product-detail .detail-kicker,
  .product-detail .detail-hero-copy,
  .product-detail .product-visual {
    grid-column: auto;
    grid-row: auto;
  }

  .hero {
    min-height: auto;
    gap: 42px;
    padding-top: 58px;
    padding-bottom: 48px;
  }

  .hero-visual {
    min-height: 420px;
  }

  .visual-frame {
    min-height: 420px;
  }

  .visual-grid {
    min-height: 284px;
  }

  .path-card {
    right: 22px;
  }

  .product-showcase {
    grid-template-columns: 1fr;
  }

  .method-chain {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .method-chain article:nth-child(2)::after {
    display: none;
  }

  .insight-list {
    grid-template-columns: 1fr;
  }

  .insight-entry > .button {
    justify-self: start;
  }

  .insight-entry-topics {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .insight-hub-card {
    grid-template-columns: 1fr;
    gap: 16px;
    padding-right: 64px;
  }

  .insight-hub-card p,
  .insight-hub-card small {
    grid-column: auto;
    grid-row: auto;
  }

  .detail-proof,
  .detail-grid,
  .product-metrics,
  .insight-brief {
    grid-template-columns: 1fr;
  }

  .detail-flow li {
    grid-template-columns: 1fr;
    gap: 12px;
    align-items: start;
    padding: 24px 0;
  }

  .detail-flow span:last-child {
    text-align: left;
  }

  .footer-layout {
    grid-template-columns: 1fr;
    padding: 28px 0;
  }

  .error-hero {
    min-height: auto;
    padding: 66px 0 78px;
  }

  .error-copy h1 {
    font-size: 56px;
  }
}

@media (max-width: 680px) {
  .section-shell {
    width: min(100% - 32px, 1180px);
  }

  .site-header {
    min-height: 74px;
    padding: 0 16px;
  }

  .brand img {
    width: 42px;
    height: 42px;
  }

  .brand strong {
    font-size: 16px;
  }

  .brand small {
    font-size: 9px;
  }

  .mobile-nav {
    top: 74px;
    right: 16px;
    left: 16px;
  }

  .hero {
    gap: 24px;
    padding-top: 50px;
    padding-bottom: 28px;
  }

  .hero-copy h1 {
    font-size: 48px;
  }

  .hero-copy p {
    margin-top: 24px;
    font-size: 17px;
    line-height: 1.84;
  }

  .button {
    min-width: 0;
    min-height: 48px;
    padding: 0 20px;
    font-size: 14px;
  }

  .hero-proof {
    grid-template-columns: 1fr;
    margin-top: 34px;
    border-bottom: 0;
  }

  .hero-proof div {
    min-height: auto;
    padding: 16px 0;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .hero-proof dd {
    margin-top: 7px;
    font-size: 13px;
  }

  .hero-visual {
    min-height: auto;
  }

  .hero-visual::before {
    inset: 20px 0 -8px 18px;
  }

  .visual-frame {
    min-height: 330px;
    padding: 16px;
  }

  .visual-frame::before {
    inset: 16px;
    background-size: 56px 56px;
  }

  .visual-header {
    gap: 12px;
    font-size: 9px;
  }

  .visual-header i {
    width: 32px;
  }

  .visual-grid {
    min-height: 220px;
    margin-top: 12px;
  }

  .visual-grid::before {
    right: -8px;
    top: 18px;
    width: 140px;
    height: 140px;
  }

  .visual-grid::after {
    width: 110px;
    height: 110px;
  }

  .visual-image {
    height: 238px;
  }

  .visual-card {
    min-width: 0;
    width: 178px;
    padding: 12px;
  }

  .scope-card {
    top: 8px;
    left: 6px;
  }

  .path-card {
    right: 6px;
    bottom: 8px;
  }

  .visual-card strong {
    font-size: 11px;
  }

  .visual-card span {
    margin-top: 6px;
    font-size: 10px;
  }

  .visual-footer {
    gap: 8px;
    margin-top: 12px;
    font-size: 10px;
  }

  .products {
    padding-top: 62px;
    padding-bottom: 82px;
  }

  .section-heading,
  .section-heading.compact {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .section-heading > p:last-child {
    grid-column: auto;
    margin: 0;
  }

  .section-heading h2,
  .service-intro h2,
  .about-layout h2,
  .contact-copy h2 {
    font-size: 32px;
  }

  .product-card,
  .service-list article,
  .method-chain article,
  .contact-form {
    padding: 24px;
  }

  .product-card {
    min-height: 390px;
  }

  .product-logo-frame {
    width: 64px;
    height: 64px;
  }

  .service-band,
  .method,
  .contact,
  .detail-section {
    padding-top: 82px;
    padding-bottom: 82px;
  }

  .detail-hero {
    padding: 58px 0 54px;
  }

  .detail-hero h1 {
    font-size: 42px;
  }

  .product-detail .detail-hero h1,
  .insight-detail .detail-hero h1 {
    font-size: 32px;
    line-height: 1.18;
  }

  .detail-hero h1,
  .detail-lede {
    word-break: break-all;
  }

  .detail-lede {
    font-size: 16px;
  }

  .detail-proof {
    margin-top: 34px;
  }

  .detail-card {
    min-height: auto;
    padding: 24px;
  }

  .detail-card h3 {
    margin-top: 34px;
  }

  .detail-cta {
    padding-bottom: 82px;
  }

  .detail-cta h2 {
    font-size: 34px;
  }

  .yingshu-cta h2 {
    white-space: normal;
  }

  .product-visual {
    padding: 12px;
  }

  .product-visual::before {
    display: none;
  }

  .insight-panel {
    padding: 22px;
  }

  .insight-panel::before {
    display: none;
  }

  .product-visual-note {
    grid-template-columns: 1fr;
  }

  .product-visual-note span {
    padding: 10px 0 0;
  }

  .interface-copy,
  .method-board > article {
    padding: 24px;
  }

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

  .method-board h3 {
    font-size: 26px;
  }

  .service-list,
  .method-chain {
    grid-template-columns: 1fr;
  }

  .method-chain article::after {
    display: none;
  }

  .insights {
    padding-bottom: 82px;
  }

  .insights-preview {
    padding-bottom: 72px;
  }

  .insight-entry {
    gap: 24px;
    padding: 28px 0;
  }

  .insight-entry h2 {
    font-size: 30px;
  }

  .insight-entry-topics span {
    padding-top: 0;
  }

  .insights-hub-hero {
    gap: 34px;
    padding: 58px 0 52px;
  }

  .insights-hub-copy h1 {
    font-size: 42px;
  }

  .insights-hub-copy > p:last-child {
    margin-top: 24px;
    font-size: 16px;
  }

  .insights-hub-note {
    padding: 24px;
  }

  .insight-hub-section {
    padding-bottom: 82px;
  }

  .insight-hub-list {
    margin-top: 30px;
  }

  .insight-hub-card {
    min-height: auto;
    padding: 24px 54px 24px 24px;
  }

  .insight-hub-card strong {
    font-size: 24px;
  }

  .insight-list a {
    gap: 12px;
    min-height: auto;
    padding: 22px;
  }

  .insight-list small {
    text-align: left;
  }

  .about-band {
    padding: 82px 0;
  }

  .error-copy h1 {
    font-size: 34px;
  }

  .error-copy > p:last-of-type {
    font-size: 16px;
  }

  .error-panel {
    min-height: 320px;
    padding: 24px;
  }

  .error-panel::before {
    inset: 16px;
  }

  .error-panel dl {
    margin-top: 34px;
  }

  .error-panel dl div {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .site-footer nav {
    flex-wrap: wrap;
  }
}

@media (max-width: 380px) {
  .error-copy h1 {
    font-size: 28px;
  }
}