@font-face {
  font-family: "Noto Sans SC";
  font-style: normal;
  font-weight: 300;
  font-display: swap;
  src: url("./assets/fonts/NotoSansSC-300.woff2") format("woff2");
}

@font-face {
  font-family: "Noto Sans SC";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("./assets/fonts/NotoSansSC-400.woff2") format("woff2");
}

:root {
  --ink: #101923;
  --muted: #5d6876;
  --paper: #ffffff;
  --soft: #f4f7f8;
  --line: #d9e1e8;
  --blue: #00a7e1;
  --teal: #0a9b8f;
  --orange: #f28c28;
  --red: #d9272f;
  --green: #3f8f4e;
  --black: #05080b;
  --radius: 8px;
  --shadow: 0 18px 50px rgba(16, 25, 35, 0.12);
  --max: 1280px;
  --font-sans: "Noto Sans SC", "Hiragino Sans GB", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-display: var(--font-sans);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 164px;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--font-sans);
  letter-spacing: 0;
  font-weight: 300;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

button,
select,
input {
  font: inherit;
}

body,
button,
select,
input,
textarea,
h1,
h2,
h3,
h4,
h5,
h6,
p,
a,
li,
dt,
dd,
th,
td,
strong {
  font-family: var(--font-sans);
  font-weight: inherit;
}

.skip-link {
  position: fixed;
  left: 16px;
  top: 12px;
  z-index: 200;
  padding: 10px 14px;
  color: var(--paper);
  background: var(--ink);
  transform: translateY(-160%);
  transition: transform 0.2s ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 100;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 78px;
  padding: 14px clamp(18px, 4vw, 54px);
  background: rgba(255, 255, 255, 0.86);
  border-bottom: 1px solid rgba(217, 225, 232, 0.72);
  backdrop-filter: blur(18px);
  transition: min-height 0.28s ease, box-shadow 0.28s ease, background-color 0.28s ease;
}

.site-header.is-scrolled {
  min-height: 62px;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 8px 26px rgba(16, 25, 35, 0.08);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 210px;
  margin-left: 10px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  color: var(--paper);
  background: linear-gradient(135deg, var(--blue), var(--teal));
  border-radius: 6px;
  font-size: 24px;
  font-weight: 400;
}

.brand-text {
  display: grid;
  gap: 2px;
}

.brand-text strong {
  color: var(--blue);
  font-size: 23px;
  line-height: 1;
}

.brand-text em {
  color: var(--muted);
  font-size: 12px;
  font-style: normal;
}

.top-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: clamp(14px, 2.2vw, 32px);
}

.top-nav a {
  position: relative;
  padding: 11px 0;
  color: #253141;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 400;
}

.top-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 4px;
  width: 100%;
  height: 2px;
  background: var(--red);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.24s ease;
}

.top-nav a:hover::after,
.top-nav a.is-active::after {
  transform: scaleX(1);
  transform-origin: left;
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--paper);
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 5px auto;
  background: var(--ink);
  transition: transform 0.2s ease;
}

.menu-toggle[aria-expanded="true"] span:first-child {
  transform: translateY(3.5px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span:last-child {
  transform: translateY(-3.5px) rotate(-45deg);
}

.section-band {
  padding: clamp(70px, 9vw, 120px) clamp(18px, 5vw, 72px);
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(360px, 1.1fr);
  align-items: center;
  gap: clamp(28px, 6vw, 78px);
  min-height: 84vh;
  padding-top: 118px;
  overflow: hidden;
  background:
    linear-gradient(115deg, rgba(255,255,255,0.96) 0%, rgba(255,255,255,0.82) 46%, rgba(244,247,248,0.4) 100%),
    radial-gradient(circle at 8% 18%, rgba(242,140,40,0.18), transparent 28%),
    radial-gradient(circle at 92% 18%, rgba(10,155,143,0.14), transparent 30%),
    #f7fafb;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 92px 0 auto;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(12,106,166,0.5), transparent);
}

.hero-copy,
.section-heading,
.about-grid,
.hero-metrics,
.product-stage,
.case-grid,
.cert-grid,
.sales-grid,
.site-footer {
  width: min(100%, var(--max));
  margin-inline: auto;
}

.hero-copy {
  justify-self: end;
  max-width: 590px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  color: var(--blue);
  font-size: 14px;
  font-weight: 400;
}

.eyebrow::before {
  content: "";
  width: 34px;
  height: 2px;
  background: currentColor;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  font-weight: 400;
}

h1 {
  margin-bottom: 24px;
  font-size: clamp(52px, 8vw, 108px);
  line-height: 0.95;
  font-weight: 400;
}

.hero-lead {
  max-width: 520px;
  color: #344454;
  font-size: clamp(18px, 2.2vw, 24px);
  line-height: 1.75;
}

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

.button {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-height: 48px;
  padding: 0 22px;
  border: 1px solid var(--ink);
  border-radius: 6px;
  overflow: hidden;
  cursor: pointer;
  isolation: isolate;
  transition: color 0.24s ease, border-color 0.24s ease, transform 0.24s ease;
}

.button::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: var(--ink);
  transform: translateX(-102%);
  transition: transform 0.28s ease;
}

.button span {
  width: 16px;
  height: 9px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: skewX(-20deg);
  transition: transform 0.22s ease;
}

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

.button:hover::before {
  transform: translateX(0);
}

.button:hover span {
  transform: translateX(4px) skewX(-20deg);
}

.button.primary {
  color: var(--paper);
  background: var(--ink);
}

.button.primary::before {
  background: var(--red);
}

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

.button.ghost:hover {
  color: var(--paper);
}

.hero-visual {
  position: relative;
  width: min(100%, 800px);
}

.hero-visual img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-panel {
  position: absolute;
  left: 24px;
  bottom: 24px;
  width: min(82%, 350px);
  padding: 18px 20px;
  color: var(--paper);
  background: rgba(5, 8, 11, 0.82);
  border-left: 4px solid var(--orange);
  backdrop-filter: blur(16px);
}

.hero-panel p {
  margin-bottom: 6px;
  color: #b9c9d5;
  font-size: 13px;
}

.hero-panel strong {
  font-size: 17px;
  line-height: 1.45;
}

.hero-metrics {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.72);
}

.hero-metrics div {
  min-height: 108px;
  padding: 24px clamp(16px, 3vw, 32px);
  border-right: 1px solid var(--line);
}

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

.hero-metrics span {
  display: block;
  margin-bottom: 8px;
  color: var(--red);
  font-size: clamp(28px, 4vw, 46px);
  font-weight: 400;
  line-height: 1;
}

.hero-metrics p {
  margin: 0;
  color: var(--muted);
  font-weight: 400;
}

.section-heading {
  margin-bottom: clamp(34px, 5vw, 58px);
}

.section-heading h2 {
  max-width: 820px;
  margin: 0;
  font-size: clamp(32px, 5vw, 56px);
  line-height: 1.12;
  font-weight: 400;
}

.section-heading.invert h2,
.section-heading.invert .eyebrow {
  color: var(--paper);
}

.section-note {
  margin: 16px 0 0;
  color: var(--muted);
}

.about {
  padding-top: clamp(54px, 6vw, 78px);
  padding-bottom: clamp(68px, 8vw, 104px);
  background: var(--paper);
}

.about .section-heading {
  margin-bottom: clamp(28px, 3.6vw, 44px);
}

.about .section-heading h2 {
  max-width: 840px;
  font-size: clamp(34px, 3.8vw, 48px);
  line-height: 1.2;
  font-weight: 400;
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(380px, 1.05fr) minmax(380px, 0.95fr);
  gap: clamp(44px, 6vw, 84px);
  align-items: start;
}

.statement {
  max-width: 660px;
  padding-top: 0;
  color: #263647;
  font-size: 17px;
  line-height: 1.94;
  font-weight: 300;
}

.statement p {
  margin-bottom: 22px;
}

.statement p:last-child {
  margin-bottom: 0;
}

.about-proof {
  display: grid;
  align-content: start;
  gap: 0;
  background: #fafbfc;
  border: 1px solid #e8edf1;
  border-radius: 2px;
}

.about-proof div {
  min-height: 0;
  display: grid;
  align-content: center;
  gap: 8px;
  padding: 28px 32px 28px 44px;
  position: relative;
  border-bottom: 1px solid #e8edf1;
}

.about-proof div::before {
  content: "";
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 28px;
  background: #00a7e1;
  border-radius: 2px;
  opacity: 0.45;
}

.about-proof div:last-child {
  border-bottom: 0;
}

.about-proof em {
  display: none;
}

.about-proof strong {
  color: #1a2a38;
  font-size: clamp(22px, 2.2vw, 30px);
  line-height: 1.2;
  font-weight: 400;
  letter-spacing: 0.02em;
}

.about-proof span {
  color: #6b7a8a;
  font-size: 13px;
  line-height: 1.65;
  font-weight: 300;
}

.capability-list {
  display: grid;
  border-top: 1px solid var(--line);
}

.capability-list div {
  position: relative;
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 18px;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}

.capability-list span {
  color: var(--blue);
  font-size: 13px;
  font-weight: 400;
}

.capability-list h3 {
  margin-bottom: 8px;
  font-size: 22px;
}

.capability-list p {
  grid-column: 2;
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.75;
}

.about-capability-list {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  width: min(100%, var(--max));
  margin: 64px auto 0;
  padding: 0;
  background: transparent;
  border: 0;
}

.about-capability-list div {
  position: relative;
  display: flex;
  min-height: 258px;
  flex-direction: column;
  padding: 28px 26px 30px;
  overflow: hidden;
  background:
    linear-gradient(145deg, rgba(0, 167, 225, 0.12), rgba(255, 255, 255, 0) 46%),
    linear-gradient(180deg, #fff, #f7fbfe);
  border: 1px solid #d3e4ee;
  border-top: 4px solid #00a7e1;
  box-shadow: 0 18px 34px rgba(16, 25, 35, 0.07);
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}

.about-capability-list div::before {
  content: "";
  position: absolute;
  right: -48px;
  bottom: -70px;
  width: 160px;
  height: 160px;
  background: rgba(0, 167, 225, 0.08);
  transform: rotate(28deg);
}

.about-capability-list div::after {
  content: "";
  position: absolute;
  left: 26px;
  right: 26px;
  bottom: 0;
  height: 3px;
  background: linear-gradient(90deg, #00a7e1, rgba(0, 167, 225, 0));
}

.about-capability-list div:hover {
  transform: translateY(-2px);
  border-color: #b8dced;
  box-shadow: 0 24px 46px rgba(16, 25, 35, 0.1);
}

.about-capability-list span {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  margin-bottom: 24px;
  color: #00a7e1;
  background: #fff;
  border: 1px solid #bfe1f0;
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0.08em;
}

.about-capability-list h3 {
  position: relative;
  z-index: 1;
  min-height: 58px;
  margin-bottom: 18px;
  color: #111923;
  font-size: 21px;
  line-height: 1.36;
  font-weight: 400;
}

.about-capability-list p {
  position: relative;
  z-index: 1;
  grid-column: auto;
  color: #596778;
  font-size: 14.5px;
  line-height: 1.82;
}

.about-service-flow {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  width: min(100%, var(--max));
  margin: 42px auto 0;
  overflow: hidden;
  background:
    linear-gradient(110deg, rgba(0, 167, 225, 0.1), rgba(255, 255, 255, 0) 45%),
    #f6fbfe;
  border: 1px solid #d3e4ee;
  border-left: 4px solid #00a7e1;
}

.about-service-flow div {
  position: relative;
  min-height: 154px;
  padding: 28px 30px 28px;
  background: transparent;
  border-right: 0;
}

.about-service-flow div + div {
  border-left: 1px solid #d3e4ee;
}

.about-service-flow div::before {
  content: "";
  position: absolute;
  top: 28px;
  right: -7px;
  z-index: 2;
  width: 14px;
  height: 14px;
  background: #f6fbfe;
  border-top: 1px solid #d3e4ee;
  border-right: 1px solid #d3e4ee;
  transform: rotate(45deg);
}

.about-service-flow div + div::before {
  left: auto;
}

.about-service-flow div:last-child::before {
  content: none;
}

.about-service-flow span {
  display: block;
  margin-bottom: 20px;
  color: #00a7e1;
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.08em;
}

.about-service-flow strong {
  display: block;
  margin-bottom: 10px;
  color: #111923;
  font-size: 17px;
  line-height: 1.45;
  font-weight: 400;
}

.about-service-flow p {
  margin: 0;
  color: #566273;
  font-size: 14px;
  line-height: 1.75;
}

.about .roadmap {
  margin-top: 36px;
}

.roadmap {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  width: min(100%, var(--max));
  margin: 56px auto 0;
  background: var(--line);
  border: 1px solid var(--line);
}

.roadmap span {
  min-height: 82px;
  display: flex;
  align-items: center;
  padding: 18px;
  background: var(--soft);
  color: #213242;
  font-weight: 400;
  line-height: 1.45;
}

.dark {
  color: var(--paper);
  background:
    linear-gradient(135deg, rgba(8, 13, 18, 0.96), rgba(6, 24, 38, 0.98)),
    var(--black);
}

.product-tabs {
  width: min(100%, var(--max));
  margin: 0 auto 24px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid rgba(255, 255, 255, 0.22);
}

.tab {
  min-height: 62px;
  padding: 12px 14px;
  color: rgba(255, 255, 255, 0.78);
  background: rgba(255, 255, 255, 0.03);
  border: 0;
  border-right: 1px solid rgba(255, 255, 255, 0.18);
  cursor: pointer;
  transition: background-color 0.22s ease, color 0.22s ease;
}

.tab:last-child {
  border-right: 0;
}

.tab:hover,
.tab.is-active {
  color: var(--paper);
  background: var(--blue);
}

.product-stage {
  position: relative;
  min-height: 650px;
}

.product-panel {
  display: none;
  grid-template-columns: minmax(280px, 0.92fr) minmax(360px, 1.08fr);
  gap: clamp(24px, 4vw, 50px);
  align-items: stretch;
  padding: clamp(22px, 4vw, 42px);
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius);
  animation: panelIn 0.28s ease both;
}

.product-panel.is-active {
  display: grid;
}

@keyframes panelIn {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.product-copy {
  display: flex;
  flex-direction: column;
}

.series {
  margin-bottom: 12px;
  color: #9bd2ff;
  font-size: 14px;
  font-weight: 400;
}

.product-copy h3 {
  margin-bottom: 18px;
  font-size: clamp(28px, 4vw, 46px);
  line-height: 1.15;
}

.product-copy p {
  color: rgba(255, 255, 255, 0.78);
  line-height: 1.78;
}

.product-copy ul {
  display: grid;
  gap: 12px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.product-copy li {
  position: relative;
  padding-left: 24px;
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.6;
}

.product-copy li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 10px;
  height: 2px;
  background: var(--orange);
}

.product-media {
  min-height: 360px;
}

.product-media img {
  width: 100%;
  height: 100%;
  min-height: 360px;
  object-fit: cover;
  border-radius: 6px;
}

.spec-grid {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  margin: 8px 0 0;
  background: rgba(255, 255, 255, 0.16);
}

.spec-grid div {
  padding: 20px;
  background: rgba(5, 8, 11, 0.48);
}

.spec-grid dt {
  margin-bottom: 10px;
  color: #9db0bf;
  font-size: 13px;
}

.spec-grid dd {
  margin: 0;
  color: var(--paper);
  font-size: 18px;
  font-weight: 400;
  line-height: 1.35;
}

.cases {
  background: var(--paper);
}

.cases.section-band {
  padding-top: 34px;
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: minmax(220px, auto);
  gap: 18px;
}

.case-card {
  position: relative;
  min-height: 260px;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--ink);
  cursor: default;
}

.case-card.large {
  grid-column: span 2;
  grid-row: span 2;
}

.case-card img {
  width: 100%;
  height: 100%;
  min-height: 260px;
  object-fit: cover;
  transform: scale(1.02);
  transition: transform 0.45s ease, filter 0.45s ease;
}

.case-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 30%, rgba(5, 8, 11, 0.78));
}

.case-card div {
  position: absolute;
  left: 20px;
  right: 20px;
  bottom: 18px;
  z-index: 1;
  color: var(--paper);
}

.case-card span {
  display: inline-block;
  margin-bottom: 8px;
  color: #ffd49c;
  font-size: 13px;
  font-weight: 400;
}

.case-card h3 {
  margin: 0;
  font-size: clamp(18px, 2.4vw, 26px);
  line-height: 1.35;
}

.case-card:hover img {
  transform: scale(1.08);
  filter: saturate(1.05);
}

.muted {
  background: var(--soft);
}

.certificates.section-band {
  padding-top: 34px;
}

.certificates .section-heading {
  margin-bottom: 26px;
}

.certificates .section-heading h2 {
  font-size: clamp(38px, 4.2vw, 54px);
}

.cert-toolbar {
  width: min(100%, var(--max));
  margin: 0 auto 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.filter {
  min-height: 42px;
  padding: 0 16px;
  color: #2b3a49;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 999px;
  cursor: pointer;
  transition: background-color 0.22s ease, color 0.22s ease, border-color 0.22s ease;
}

.filter:hover,
.filter.is-active {
  color: var(--paper);
  background: #00a7e1;
  border-color: #00a7e1;
}

.cert-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 14px;
}

.cert-card {
  position: relative;
  min-height: 230px;
  padding: 12px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  cursor: zoom-in;
  overflow: hidden;
  transition: transform 0.24s ease, box-shadow 0.24s ease, opacity 0.24s ease;
}

.cert-card img {
  width: 100%;
  height: 168px;
  object-fit: contain;
  background: #f8fafc;
}

.cert-card span {
  display: block;
  margin-top: 12px;
  color: #273747;
  font-size: 14px;
  font-weight: 400;
  line-height: 1.35;
}

.cert-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-top: 3px solid var(--orange);
  transform: translateY(-4px);
  opacity: 0;
  transition: transform 0.22s ease, opacity 0.22s ease;
}

.cert-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 28px rgba(16, 25, 35, 0.11);
}

.cert-card:hover::before {
  opacity: 1;
  transform: translateY(0);
}

.cert-card.is-hidden {
  display: none;
}

.sales {
  background:
    linear-gradient(90deg, rgba(12,106,166,0.08), transparent 42%),
    var(--paper);
}

.sales-grid {
  display: grid;
  grid-template-columns: minmax(300px, 0.92fr) minmax(360px, 1.08fr);
  gap: 24px;
}

.contact-card,
.demand-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  overflow: hidden;
}

.contact-card {
  display: grid;
  grid-template-rows: auto 1fr;
  padding: clamp(22px, 4vw, 34px);
}

.contact-card h3,
.demand-card h3 {
  margin-bottom: 20px;
  font-size: 26px;
}

.contact-card dl {
  display: grid;
  gap: 14px;
  margin: 0 0 26px;
}

.contact-card dl div {
  display: grid;
  grid-template-columns: 74px 1fr;
  gap: 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.contact-card dt {
  color: var(--blue);
  font-weight: 400;
}

.contact-card dd {
  margin: 0;
  color: #344454;
  line-height: 1.55;
}

.contact-card img {
  width: 100%;
  max-height: 260px;
  object-fit: contain;
  background: var(--soft);
  border: 1px solid var(--line);
}

.demand-card {
  padding: clamp(22px, 4vw, 34px);
}

.demand-card > p {
  color: var(--muted);
  line-height: 1.7;
}

.control-row {
  display: grid;
  grid-template-columns: 76px 1fr auto;
  align-items: center;
  gap: 14px;
  margin-top: 20px;
}

.control-row label,
.check-group legend {
  color: #263647;
  font-weight: 400;
}

select,
input[type="range"] {
  width: 100%;
}

select {
  min-height: 46px;
  padding: 0 12px;
  color: var(--ink);
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 6px;
}

input[type="range"] {
  accent-color: var(--blue);
}

output {
  min-width: 58px;
  color: var(--red);
  font-weight: 400;
}

.check-group {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 24px 0 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.check-group legend {
  padding: 0 8px;
}

.check-group label {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 34px;
  color: #344454;
}

.check-group input {
  width: 18px;
  height: 18px;
  accent-color: var(--green);
}

.summary-box {
  min-height: 96px;
  margin: 24px 0 18px;
  padding: 18px;
  color: #273747;
  background: var(--soft);
  border-left: 4px solid var(--orange);
  line-height: 1.7;
}

.copy-button {
  width: fit-content;
}

.subpage-main {
  padding-top: 148px;
  background: #fff;
}

.subpage-hero {
  padding: 72px clamp(18px, 5vw, 72px) 44px;
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(108deg, rgba(0, 167, 225, 0.08), transparent 48%),
    linear-gradient(180deg, #fff, #f7fbfd);
}

.subpage-inner {
  width: min(100%, var(--max));
  margin: 0 auto;
}

.subpage-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  color: #00a7e1;
  font-size: 14px;
  font-weight: 400;
}

.subpage-kicker::before {
  content: "";
  width: 34px;
  height: 2px;
  background: currentColor;
}

.subpage-hero h1 {
  max-width: 820px;
  margin: 0 0 18px;
  color: #101923;
  font-size: clamp(38px, 5vw, 62px);
  line-height: 1.08;
}

.subpage-hero p {
  max-width: 780px;
  margin: 0;
  color: #566273;
  font-size: 18px;
  line-height: 1.8;
}

.sales-hero {
  padding-top: 38px;
  padding-bottom: 34px;
}

.sales-hero h1 {
  margin-bottom: 14px;
  font-size: clamp(42px, 5vw, 60px);
}

.sales-hero p {
  color: #253141;
  font-size: 20px;
  font-weight: 400;
  line-height: 1.65;
}

.subpage-content {
  padding: 56px clamp(18px, 5vw, 72px) 86px;
}

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

.subpage-card {
  min-height: 230px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 28px;
  background: #fff;
  color: #172231;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.subpage-card:hover {
  position: relative;
  z-index: 1;
  transform: translateY(-3px);
  box-shadow: 0 18px 36px rgba(16, 25, 35, 0.12);
}

.subpage-card em {
  color: #00a7e1;
  font-style: normal;
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.08em;
}

.subpage-card strong {
  display: block;
  margin: 22px 0 10px;
  font-size: 22px;
  line-height: 1.35;
}

.subpage-card p {
  margin: 0;
  color: #5d6876;
  line-height: 1.75;
}

.subpage-note {
  max-width: 900px;
  margin: 34px 0 0;
  color: #4f5964;
  font-size: 16px;
  line-height: 1.85;
}

.site-footer {
  width: 100%;
  margin: 0;
  color: #151c25;
  background: #f4f5f6;
  border-top: 4px solid #c7dde8;
}

.footer-inner {
  display: grid;
  grid-template-columns: minmax(250px, 0.86fr) minmax(420px, 1.35fr) minmax(260px, 0.8fr);
  gap: clamp(36px, 5vw, 72px);
  width: min(100% - 72px, 1180px);
  margin: 0 auto;
  padding: 52px 0 42px;
  border-bottom: 1px solid #d6dadd;
}

.footer-logo {
  display: inline-flex;
  width: 124px;
  margin-bottom: 18px;
}

.footer-logo img {
  width: 100%;
  height: auto;
}

.footer-company {
  margin: 0 0 12px;
  color: #111;
  font-size: 18px;
  font-weight: 400;
}

.footer-contact {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 16px 0 0;
  border-top: 1px solid #d5dade;
}

.footer-contact div {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}

.footer-contact dt {
  color: #7a828a;
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.08em;
}

.footer-contact dd {
  margin: 0;
  color: #2d3540;
  font-size: 14px;
  line-height: 1.65;
}

.footer-products h2,
.footer-sitemap h2 {
  margin: 0 0 20px;
  color: #1d252f;
  font-size: 22px;
  font-weight: 400;
}

.footer-product-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  margin-bottom: 24px;
  border-top: 1px solid #d5dade;
}

.footer-product-links a {
  position: relative;
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 16px;
  align-items: center;
  min-height: 76px;
  padding: 16px 18px;
  color: #222a33;
  border-bottom: 1px solid #d5dade;
  transition: background-color 0.2s ease, transform 0.2s ease;
}

.footer-product-links a:nth-child(odd) {
  border-right: 1px solid #d5dade;
}

.footer-product-links a:nth-last-child(-n + 2) {
  border-bottom: 0;
}

.footer-product-links a:last-child {
  border-right: 0;
}

.footer-product-links a::before {
  content: "";
  position: absolute;
  left: 18px;
  top: 14px;
  width: 22px;
  height: 2px;
  background: #9db7c6;
  transition: width 0.2s ease, background-color 0.2s ease;
}

.footer-product-links em,
.footer-product-links span {
  position: relative;
  z-index: 1;
}

.footer-product-links em {
  color: #7a828a;
  font-style: normal;
  font-size: 18px;
  font-weight: 400;
  letter-spacing: 0.08em;
}

.footer-product-links span {
  color: #202832;
  font-size: 15px;
  font-weight: 400;
  line-height: 1.45;
}

.footer-product-links a:hover,
.footer-product-links a.is-active {
  background: #fff;
  transform: translateY(-2px);
}

.footer-product-links a:hover::before,
.footer-product-links a.is-active::before {
  width: 32px;
  background: var(--blue);
}

.footer-products p {
  max-width: 680px;
  margin: 0;
  color: #4f5964;
  font-size: 14px;
  line-height: 1.8;
}

.footer-sitemap {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
}

.footer-sitemap a {
  position: relative;
  display: block;
  margin: 0 0 16px;
  padding-left: 16px;
  color: #222a33;
  font-size: 15px;
  font-weight: 400;
  transition: color 0.2s ease, transform 0.2s ease;
}

.footer-sitemap a::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 7px;
  height: 2px;
  background: var(--teal);
}

.footer-sitemap a:hover {
  color: var(--blue);
  transform: translateX(2px);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(100% - 72px, 1180px);
  margin: 0 auto;
  padding: 18px 0 22px;
  color: #6c747d;
  font-size: 13px;
}

.footer-bottom p {
  margin: 0;
}

.footer-icp {
  display: inline;
  color: #6c747d;
  font-size: 13px;
}

.footer-bottom nav {
  display: flex;
  align-items: center;
  gap: 12px;
  white-space: nowrap;
}

.footer-bottom a {
  color: #303842;
  transition: color 0.2s ease;
}

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

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: grid;
  place-items: center;
  padding: 28px;
  background: rgba(5, 8, 11, 0.82);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.22s ease;
}

.lightbox.is-open {
  opacity: 1;
  pointer-events: auto;
}

.lightbox img {
  max-width: min(92vw, 900px);
  max-height: 88vh;
  object-fit: contain;
  background: var(--paper);
  border-radius: 6px;
  box-shadow: 0 20px 70px rgba(0, 0, 0, 0.32);
}

/* gallery lightbox */
.lightbox--gallery {
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox--gallery img {
  max-width: min(92vw, 1100px);
  max-height: 86vh;
  cursor: grab;
  transition: transform 0.25s ease;
  display: block;
  position: relative;
  z-index: 1;
}

.lightbox--gallery::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  opacity: 0.10;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='280' height='160'%3E%3Ctext x='50%25' y='50%25' text-anchor='middle' dominant-baseline='middle' font-family='sans-serif' font-size='16' font-weight='700' fill='%2300a7e1' transform='rotate(-30 140 80)'%3EPolaris %E5%B8%95%E9%94%90%E6%96%AF%3C/text%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 280px 160px;
}

.lightbox__close {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 48px;
  height: 48px;
  border: 2px solid rgba(255,255,255,0.6);
  border-radius: 50%;
  background: rgba(0,0,0,0.5);
  cursor: pointer;
  z-index: 10;
}

.lightbox__close::before,
.lightbox__close::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 20px;
  height: 2.5px;
  background: #fff;
  border-radius: 1px;
}
.lightbox__close::before { transform: translate(-50%, -50%) rotate(45deg); }
.lightbox__close::after { transform: translate(-50%, -50%) rotate(-45deg); }

.lightbox__prev,
.lightbox__next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border: 2px solid rgba(255,255,255,0.6);
  border-radius: 50%;
  background: rgba(0,0,0,0.5);
  cursor: pointer;
  z-index: 10;
}
.lightbox__prev { left: 20px; }
.lightbox__next { right: 20px; }

.lightbox__prev::before,
.lightbox__next::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 12px;
  height: 12px;
  border-left: 2.5px solid #fff;
  border-bottom: 2.5px solid #fff;
  border-radius: 1px;
}
.lightbox__prev::before {
  transform: translate(-30%, -50%) rotate(45deg);
}
.lightbox__next::before {
  transform: translate(-70%, -50%) rotate(-135deg);
}

.lightbox__prev:hover,
.lightbox__next:hover,
.lightbox__close:hover {
  background: rgba(0,0,0,0.7);
  border-color: #fff;
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1020px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .hero-copy {
    justify-self: start;
  }

  .hero-visual {
    width: 100%;
  }

  .about-grid,
  .sales-grid {
    grid-template-columns: 1fr;
  }

  .statement {
    max-width: none;
  }

  .about-capability-list,
  .about-service-flow,
  .subpage-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .roadmap,
  .product-tabs,
  .spec-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .case-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .cert-grid {
    grid-template-columns: repeat(4, 1fr);
  }

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

  .footer-product-links {
    grid-template-columns: repeat(4, minmax(120px, 1fr));
  }
}

@media (max-width: 760px) {
  .site-header {
    min-height: 66px;
  }

  .brand {
    min-width: 0;
  }

  .brand-text em {
    display: none;
  }

  .menu-toggle {
    display: block;
  }

  .top-nav {
    position: fixed;
    top: 66px;
    left: 0;
    width: 100%;
    display: grid;
    gap: 0;
    padding: 8px 18px 18px;
    background: rgba(255, 255, 255, 0.98);
    border-bottom: 1px solid var(--line);
    transform: translateY(-130%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.25s ease, opacity 0.25s ease;
  }

  .top-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .top-nav a {
    padding: 15px 0;
    border-bottom: 1px solid var(--line);
  }

  .section-band {
    padding: 62px 18px;
  }

  .hero {
    padding-top: 104px;
  }

  h1 {
    font-size: 52px;
  }

  .hero-actions,
  .cert-toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .button,
  .filter,
  .copy-button {
    width: 100%;
  }

  .hero-metrics,
  .roadmap,
  .about-capability-list,
  .about-service-flow,
  .subpage-grid,
  .product-tabs,
  .spec-grid,
  .case-grid,
  .cert-grid,
  .check-group {
    grid-template-columns: 1fr;
  }

  .hero-metrics div {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .hero-metrics div:last-child {
    border-bottom: 0;
  }

  .capability-list div,
  .capability-list p,
  .about-capability-list div,
  .contact-card dl div,
  .control-row {
    grid-template-columns: 1fr;
  }

  .about .section-heading h2 {
    font-size: clamp(30px, 9vw, 40px);
  }

  .statement {
    font-size: 16px;
    line-height: 1.86;
  }

  .about-proof div {
    min-height: 0;
    padding: 22px 24px 22px 38px;
  }

  .about-proof em {
    display: none;
  }

  .about-capability-list {
    margin-top: 42px;
  }

  .about-capability-list div {
    min-height: 0;
    padding: 26px 24px;
  }

  .about-capability-list div::before {
    right: -72px;
    bottom: -92px;
  }

  .about-service-flow div {
    min-height: 0;
    padding: 24px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .about-service-flow div + div {
    padding-left: 24px;
    border-left: 0;
  }

  .about-service-flow div::before,
  .about-service-flow div + div::before {
    content: none;
  }

  .about-service-flow div::before,
  .about-service-flow div + div::before {
    left: 0;
  }

  .about-service-flow div:last-child {
    border-bottom: 0;
  }

  .subpage-main {
    padding-top: 72px;
  }

  .subpage-hero {
    padding-top: 46px;
  }

  .case-card.large {
    grid-column: span 1;
    grid-row: span 1;
  }

  .product-stage {
    min-height: 0;
  }

  .product-media,
  .product-media img {
    min-height: 260px;
  }

  .footer-inner,
  .footer-bottom {
    width: calc(100% - 36px);
  }

  .footer-inner {
    gap: 34px;
    padding: 38px 0 30px;
  }

  .footer-product-links,
  .footer-sitemap {
    grid-template-columns: 1fr;
  }

  .footer-product-links a {
    min-height: 92px;
    border-right: 0;
    border-bottom: 1px solid #d5dade;
  }

  .footer-product-links a:last-child {
    border-bottom: 0;
  }

  .footer-contact div {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-bottom nav {
    flex-wrap: wrap;
    white-space: normal;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

/* ORION-style rebuild */
.site-header {
  display: block;
  min-height: 148px;
  padding: 0;
  background: #fff;
  border-top: 4px solid #222;
  border-bottom: 1px solid #d7d7d7;
  box-shadow: none;
  backdrop-filter: none;
}

.site-header.is-scrolled {
  min-height: 126px;
  background: #fff;
  box-shadow: 0 7px 20px rgba(0, 0, 0, 0.08);
}

.header-top {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  height: 78px;
  padding: 10px 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  min-width: 0;
  margin-left: 10px;
}

.brand img {
  width: 118px;
  height: auto;
  display: block;
}

.top-nav {
  justify-content: center;
  gap: 0;
  height: 66px;
  border-top: 1px solid #e7e7e7;
}

.top-nav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 156px;
  height: 66px;
  padding: 0 18px;
  color: #111;
  font-size: 16px;
  font-weight: 400;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.top-nav a::after {
  bottom: 0;
  height: 4px;
  background: #00a7e1;
}

.top-nav a:hover,
.top-nav a.is-active {
  color: #00a7e1;
  background: #f6fbff;
}

.hero {
  display: block;
  min-height: auto;
  height: auto;
  padding: 148px 0 0;
  overflow: hidden;
  background: #fff;
}

.hero::before {
  content: none;
}

.hero-slide {
  position: absolute;
  inset: 148px 0 auto;
  height: clamp(500px, 40vw, 620px);
  min-height: 0;
  opacity: 0;
  pointer-events: none;
  overflow: hidden;
  transform: translateX(100%);
  transition: transform 0.72s cubic-bezier(0.15, 0.8, 0.25, 1), opacity 0.72s ease;
  background:
    linear-gradient(90deg, #eef7fb 0%, #fff 54%, #eaf5fa 100%);
}

.hero-slide.is-active {
  position: relative;
  inset: auto;
  opacity: 1;
  pointer-events: auto;
  transform: translateX(0);
}

.hero-slide img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: left center;
  filter: saturate(0.98) contrast(1.02);
  transform: none;
  animation: none;
}

.hero-slide::before {
  content: none;
}

.hero-slide::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.05), transparent 40%, rgba(0, 76, 120, 0.05));
  pointer-events: none;
}

@keyframes slideDrift {
  from { transform: translateX(-1%); }
  to { transform: translateX(1%); }
}

.hero-cut {
  position: absolute;
  top: 0;
  right: 0;
  z-index: 3;
  display: flex;
  flex-direction: column;
  justify-content: center;
  width: 36.5%;
  height: 100%;
  padding: clamp(30px, 4.5vw, 72px) clamp(28px, 3.5vw, 54px) clamp(30px, 4vw, 62px) 5.4vw;
  color: #fff;
  background:
    linear-gradient(126deg, rgba(0, 92, 146, 0.96), rgba(0, 136, 186, 0.94)),
    #00a7e1;
  clip-path: polygon(14% 0, 100% 0, 100% 100%, 0 100%);
}

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

.hero-cut::before {
  inset: 0 0 auto 7%;
  height: 30%;
  background: linear-gradient(105deg, rgba(255, 255, 255, 0.22), rgba(255, 255, 255, 0.04) 58%, transparent 58%);
  clip-path: polygon(0 0, 100% 0, 86% 100%, 0 58%);
}

.hero-cut::after {
  inset: auto 0 0 0;
  height: 34%;
  background:
    linear-gradient(135deg, transparent 0 33%, rgba(255, 255, 255, 0.17) 33% 50%, transparent 50%),
    linear-gradient(110deg, rgba(0, 44, 78, 0.22), transparent 62%);
  clip-path: polygon(0 44%, 100% 0, 100% 100%, 0 100%);
}

.hero-cut.red {
  background: linear-gradient(118deg, rgba(38, 44, 51, 0.97), rgba(184, 18, 32, 0.95));
}

.hero-cut.dark-cut {
  background: linear-gradient(128deg, rgba(7, 18, 31, 0.98), rgba(0, 105, 169, 0.95));
}

.hero-cut.teal {
  background: linear-gradient(126deg, rgba(0, 92, 146, 0.97), rgba(0, 148, 184, 0.94));
}

.hero-cut.blue-cut {
  background: linear-gradient(126deg, rgba(0, 82, 134, 0.97), rgba(22, 129, 190, 0.94));
}

.hero-cut p,
.hero-cut h1,
.hero-cut strong {
  position: relative;
  z-index: 1;
}

.hero-cut p {
  margin-bottom: 10px;
  font-size: clamp(18px, 1.65vw, 28px);
  font-style: italic;
  font-weight: 400;
  letter-spacing: 0;
  white-space: nowrap;
}

.hero-cut h1 {
  margin-bottom: 22px;
  font-size: clamp(34px, 3.55vw, 62px);
  line-height: 1.08;
  font-weight: 400;
  text-shadow: 0 6px 16px rgba(0, 0, 0, 0.18);
}

.hero-cut strong {
  width: fit-content;
  padding: 10px 18px;
  color: #111;
  background: rgba(255, 255, 255, 0.92);
  font-size: clamp(17px, 1.6vw, 24px);
  line-height: 1.45;
  font-weight: 400;
  word-break: keep-all;
}

.hero-dots {
  position: relative;
  z-index: 4;
  display: flex;
  justify-content: center;
  gap: 12px;
  width: fit-content;
  min-width: 0;
  height: 28px;
  margin: 18px auto 38px;
  padding: 0;
  background: transparent;
  border: 0;
  box-shadow: none;
}

.hero-dots button {
  align-self: center;
  width: 48px;
  height: 4px;
  padding: 0;
  border: 0;
  border-radius: 999px;
  background: rgba(113, 126, 136, 0.48);
  cursor: pointer;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.58);
  transition: transform 0.2s ease, background-color 0.2s ease, width 0.2s ease;
}

.hero-dots button:hover,
.hero-dots button.is-active {
  background: #00a7e1;
  box-shadow: none;
}

.hero-dots button:hover {
  transform: translateY(-1px);
}

.hero-dots button:focus-visible {
  outline: 0;
  box-shadow: none;
}

.product-detail-section {
  padding: 14px 0 96px;
  background: #fff;
}

.detail-block {
  scroll-margin-top: 164px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 16px;
  width: min(100% - 56px, 1260px);
  min-height: 36px;
  margin: 0 auto 30px;
  color: #00a7e1;
  font-size: 15px;
  font-weight: 400;
}

.breadcrumb strong {
  color: #111;
  font-weight: 400;
}

.detail-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 46px;
  width: min(100% - 40px, 1440px);
  margin: 0 auto;
  align-items: start;
}

.product-stage {
  width: 100%;
  min-width: 0;
  min-height: 0;
}

.product-panel {
  display: none;
  min-width: 0;
  padding: 0;
  color: #111;
  background: transparent;
  border: 0;
  border-radius: 0;
}

.product-panel.is-active {
  display: block;
}

.detail-heading {
  position: relative;
  overflow: hidden;
  margin-bottom: 38px;
  background:
    linear-gradient(96deg, rgba(255, 255, 255, 0.98) 0 42%, rgba(238, 248, 255, 0.96) 68%, rgba(222, 242, 255, 0.94) 100%),
    radial-gradient(circle at 86% 18%, rgba(0, 167, 225, 0.13), transparent 28%),
    #f8fcff;
  border: 1px solid #d8e8f2;
  border-top: 3px solid #00a7e1;
  box-shadow: 0 14px 34px rgba(25, 77, 110, 0.08);
}

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

.detail-heading::before {
  left: -8%;
  right: -8%;
  bottom: -48px;
  height: 128px;
  border-top: 1px solid rgba(0, 167, 225, 0.16);
  border-radius: 50% 50% 0 0 / 100% 100% 0 0;
  background: linear-gradient(180deg, rgba(0, 150, 220, 0.08), transparent 60%);
  transform: rotate(-2.5deg);
}

.detail-heading::after {
  right: 26px;
  top: 24px;
  width: 210px;
  height: 90px;
  background-image: radial-gradient(circle, rgba(0, 167, 225, 0.13) 1px, transparent 1.8px);
  background-size: 11px 11px;
  opacity: 0.34;
}

.detail-heading h2 {
  position: relative;
  z-index: 1;
  margin: 0;
  padding: 40px 42px 14px 40px;
  color: #071927;
  background: transparent;
  font-size: clamp(30px, 3.6vw, 48px);
  line-height: 1.18;
  letter-spacing: 0;
}

.detail-heading h2::before {
  content: "";
  position: absolute;
  left: 40px;
  top: 27px;
  width: 54px;
  height: 3px;
  background: linear-gradient(90deg, #00a7e1, rgba(0, 167, 225, 0.12));
}

.detail-heading p {
  position: relative;
  z-index: 1;
  margin: 0;
  padding: 0 42px 30px 40px;
  color: #075f9c;
  font-size: 18px;
  font-weight: 400;
}

.detail-overview {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 34px;
  align-items: start;
  margin-bottom: 30px;
}

.detail-overview--large {
  grid-template-columns: minmax(0, 1fr) minmax(320px, 420px);
  gap: 34px;
  align-items: start;
}

.series-label {
  width: max-content;
  margin: 0 0 14px;
  padding: 5px 12px;
  color: #fff;
  background: #00a7e1;
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0;
}

.model-copy {
  padding-left: 40px;
}

.model-copy h3 {
  margin-bottom: 20px;
  font-size: 24px;
  line-height: 1.35;
}

.summary-lines {
  margin: 0 0 22px;
  border-top: 1px solid #cfcfcf;
}

.summary-lines div {
  display: grid;
  grid-template-columns: 170px 1fr;
  gap: 18px;
  padding: 14px 0;
  border-bottom: 1px solid #cfcfcf;
}

.summary-lines dt {
  color: #00a7e1;
  font-weight: 400;
}

.summary-lines dd {
  margin: 0;
  font-size: 20px;
  font-weight: 400;
}

.summary-lines--dense {
  margin-bottom: 18px;
}

.summary-lines--dense div {
  grid-template-columns: 150px 1fr;
  padding: 12px 0;
}

.check-line {
  position: relative;
  margin: 22px 0 24px;
  padding-left: 30px;
  font-size: 20px;
  font-weight: 400;
}

.check-line::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.2em;
  width: 20px;
  height: 20px;
  border: 3px solid #00a7e1;
  box-shadow: inset 4px -4px 0 #fff;
  background: linear-gradient(135deg, transparent 42%, #00a7e1 43% 56%, transparent 57%);
}

.custom-box {
  padding: 22px;
  background: #eee;
  border: 1px solid #dfdfdf;
  line-height: 1.8;
}

.custom-box strong {
  display: block;
  margin-bottom: 8px;
  font-size: 18px;
}

.custom-box p {
  margin: 0;
}

.custom-box--light {
  background: #f6fbfe;
  border-color: #d5eaf4;
}

.model-image {
  position: relative;
  margin: 0;
  min-height: 390px;
  display: grid;
  place-items: center;
}

.model-image span {
  position: absolute;
  top: 0;
  left: 20px;
  z-index: 1;
  padding: 4px 10px;
  color: #fff;
  background: #00a7e1;
  border-radius: 3px;
  font-weight: 400;
}

.model-image img {
  width: 100%;
  max-height: 390px;
  object-fit: contain;
}

.model-image--photo {
  min-height: auto;
  place-items: stretch;
  border: 1px solid #d8e8f2;
  background: #f7fbfe;
}

.model-image--photo img {
  aspect-ratio: 3 / 4;
  max-height: none;
  object-fit: contain;
}

.model-image--photo span {
  top: 18px;
  left: 18px;
}

.model-image--unframed {
  place-items: center;
  border: 0;
  background: transparent;
}

.model-image--unframed img {
  width: min(112%, 560px);
  max-height: 600px;
  aspect-ratio: auto;
  object-fit: contain;
}

.model-image--equipment {
  background:
    linear-gradient(180deg, #fff, #f7fbfe);
}

.model-image--equipment img {
  aspect-ratio: 4 / 3;
  padding: 18px;
  background: #fff;
  object-fit: contain;
}

.feature-icons {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 14px;
  margin: 28px 0 44px;
  padding: 0;
  list-style: none;
}

.feature-icons li {
  position: relative;
  display: grid;
  justify-items: center;
  gap: 10px;
  min-height: 100px;
  padding: 15px 8px 13px;
  color: #1c2a34;
  background: linear-gradient(180deg, #fff, #f7fbfe);
  border: 1px solid #d7e6ef;
  border-top: 2px solid #b9dceF;
  font-size: 12px;
  font-weight: 400;
  text-align: center;
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.feature-icons li::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(0, 167, 225, 0.35), transparent);
  opacity: 0;
  transition: opacity 0.2s ease;
}

.feature-icons li:hover {
  border-color: #a9d7ef;
  box-shadow: 0 10px 26px rgba(25, 77, 110, 0.1);
  transform: translateY(-2px);
}

.feature-icons li:hover::after {
  opacity: 1;
}

.feature-icons span {
  display: grid;
  place-items: center;
  width: 54px;
  height: 54px;
  color: #00a7e1;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(232, 247, 255, 0.92)),
    #fff;
  border-radius: 3px;
  border: 1px solid #b7dff4;
  box-shadow: inset 0 0 0 1px #fff;
  font-weight: 400;
}

.feature-icons--wide {
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin: 34px 0 34px;
  background: #fff;
  border-top: 3px solid #00a7e1;
  border-left: 1px solid #d7e6ef;
}

.feature-icons--wide li {
  min-height: 122px;
  justify-items: start;
  align-content: start;
  gap: 0;
  padding: 22px 22px 18px;
  background: #fff;
  border: 0;
  border-right: 1px solid #d7e6ef;
  border-bottom: 1px solid #d7e6ef;
  border-top: 0;
  color: #173040;
  font-size: 14px;
  text-align: left;
}

.feature-icons--wide li:nth-child(1),
.feature-icons--wide li:nth-child(2) {
  grid-column: span 2;
  min-height: 142px;
}

.feature-icons--wide li:nth-child(7),
.feature-icons--wide li:nth-child(8) {
  grid-column: span 2;
  min-height: 106px;
  background: #fbfdff;
}

.feature-icons--wide li:nth-child(1) {
  color: #fff;
  background:
    linear-gradient(135deg, rgba(0, 167, 225, 0.18), transparent 52%),
    #071927;
}

.feature-icons--wide li:nth-child(2) {
  background:
    linear-gradient(135deg, rgba(0, 167, 225, 0.16), transparent 58%),
    #eef9ff;
}

.feature-icons--wide li:nth-child(1)::after,
.feature-icons--wide li:nth-child(2)::after {
  opacity: 1;
}

.feature-icons--wide span {
  width: auto;
  height: auto;
  margin-bottom: 12px;
  color: #00a7e1;
  background: transparent;
  border: 0;
  box-shadow: none;
  font-size: 28px;
  line-height: 1;
  font-weight: 400;
}

.feature-icons--wide li:nth-child(1) span {
  color: #fff;
}

.detail-tabs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(142px, 1fr));
  counter-reset: detailNav;
  margin: 0 0 44px;
  gap: 8px;
  padding: 12px;
  background:
    linear-gradient(135deg, rgba(0, 167, 225, 0.12), rgba(9, 39, 64, 0.06)),
    #edf6fb;
  border: 1px solid #c4ddea;
  border-left: 4px solid #00a7e1;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.detail-tabs a {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 56px;
  padding: 12px 34px 12px 14px;
  color: #102f43;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.88), rgba(235, 247, 253, 0.92));
  border: 1px solid #b7d7e8;
  font-size: 15px;
  font-weight: 400;
  box-shadow: 0 8px 20px rgba(8, 43, 68, 0.05);
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.detail-tabs a:last-child {
  border-right: 1px solid #b7d7e8;
}

.detail-tabs a::before {
  counter-increment: detailNav;
  content: "0" counter(detailNav);
  display: grid;
  place-items: center;
  flex: 0 0 28px;
  width: 28px;
  height: 28px;
  color: #fff;
  background: #00a7e1;
  font-size: 11px;
  font-weight: 400;
}

.detail-tabs a::after {
  content: "";
  position: absolute;
  right: 16px;
  top: 50%;
  width: 7px;
  height: 7px;
  margin: 0;
  background: transparent;
  border-top: 1px solid #00a7e1;
  border-right: 1px solid #00a7e1;
  transform: translateY(-50%) rotate(45deg);
}

.detail-tabs a:hover {
  color: #00a7e1;
  background: #fff;
  border-top-color: #00a7e1;
  border-color: #00a7e1;
  box-shadow: 0 12px 24px rgba(0, 123, 177, 0.12);
  transform: translateY(-2px);
}

.detail-tabs a:focus-visible {
  outline: 2px solid #00a7e1;
  outline-offset: 2px;
}

.motion-showcase {
  display: grid;
  grid-template-columns: minmax(0, 1.18fr) minmax(280px, 0.72fr);
  gap: 18px;
  margin: 0 0 46px;
}

.motion-card {
  position: relative;
  min-height: clamp(360px, 36vw, 520px);
  overflow: hidden;
  color: #fff;
  background:
    linear-gradient(135deg, rgba(5, 15, 24, 0.88), rgba(5, 21, 34, 0.98)),
    #07121a;
  border: 1px solid rgba(0, 167, 225, 0.28);
  box-shadow: 0 18px 38px rgba(8, 43, 68, 0.12);
}

.motion-card video {
  display: block;
  width: 100%;
  height: 100%;
  min-height: inherit;
  object-fit: cover;
}

.motion-card--tall video {
  object-fit: contain;
  background: #07121a;
}

.motion-copy {
  position: absolute;
  left: 22px;
  bottom: 22px;
  z-index: 1;
  max-width: min(430px, calc(100% - 44px));
  pointer-events: none;
}

.motion-copy span {
  display: inline-flex;
  margin-bottom: 10px;
  padding: 5px 10px;
  color: #07121a;
  background: rgba(255, 255, 255, 0.86);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.motion-copy h3 {
  margin: 0;
  color: #fff;
  font-size: clamp(24px, 2.5vw, 36px);
  line-height: 1.15;
  text-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}

.motion-card::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 38%;
  pointer-events: none;
  background: linear-gradient(180deg, transparent, rgba(0, 0, 0, 0.48));
}

.motion-card.is-complete::before {
  content: "";
  position: absolute;
  left: 22px;
  top: 22px;
  z-index: 1;
  width: 38px;
  height: 2px;
  background: #00a7e1;
}

.detail-block {
  margin-bottom: 46px;
}

.detail-block > *:not(h3) {
  margin-left: 40px;
}

.detail-block h3 {
  position: relative;
  margin-bottom: 26px;
  padding: 0 0 18px 18px;
  background: transparent;
  border-left: 4px solid #00a7e1;
  border-bottom: 1px solid #d7e6ef;
  font-size: 30px;
}

.detail-block h3::after {
  content: "";
  position: absolute;
  left: 18px;
  bottom: -1px;
  width: 118px;
  height: 2px;
  background: linear-gradient(90deg, #00a7e1, transparent);
}

.feature-lead {
  margin-bottom: 24px;
  padding-bottom: 18px;
  border-bottom: 2px solid #00a7e1;
  font-size: 24px;
  font-weight: 400;
  line-height: 1.5;
}

.precision-chart-figure {
  margin: 0 0 34px;
  overflow: hidden;
  border: 1px solid #d8e8f2;
  border-top: 3px solid #00a7e1;
  background: #fff;
}

.precision-chart-figure img {
  width: 100%;
  display: block;
  object-fit: contain;
  background: #fafcfd;
}

.precision-chart-figure figcaption {
  padding: 14px 20px;
  color: #173040;
  background:
    linear-gradient(90deg, rgba(0, 167, 225, 0.06), transparent 60%),
    #f7fbfe;
  border-top: 1px solid #d8e8f2;
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0.02em;
}

/* ── advantage section ── */
.advantage-section {
  margin-bottom: 40px;
}

.advantage-section > h4,
.system-section > h4 {
  margin: 0 0 22px;
  padding: 0 0 14px;
  font-size: 20px;
  font-weight: 400;
  border-bottom: 2px solid #00a7e1;
}

.advantage-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin: 0 0 22px;
}

.advantage-card {
  margin: 0;
  overflow: hidden;
  background: transparent;
  display: flex;
  flex-direction: column;
}

.advantage-card img {
  width: 100%;
  flex: 1;
  min-height: 0;
  display: block;
  object-fit: contain;
}

.advantage-card figcaption {
  display: none;
}

.advantage-benefits {
  list-style: none;
  margin: 0;
  padding: 0;
}

.advantage-benefits li {
  position: relative;
  padding: 10px 0 10px 22px;
  font-size: 14px;
  font-weight: 400;
  color: #222;
  border-bottom: 1px solid #eee;
}

.advantage-benefits li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: #00a7e1;
}

/* ── system section ── */
.system-section {
  margin-bottom: 40px;
}

.system-figure {
  margin: 0 0 18px;
  overflow: hidden;
  border: 1px solid #d8e8f2;
  border-top: 3px solid #00a7e1;
  background: #fff;
}

.system-figure img {
  width: 100%;
  display: block;
  object-fit: contain;
  background: #fafcfd;
}

.low-noise-figure img {
  aspect-ratio: 1672 / 941;
}

.low-noise-points + .low-noise-figure {
  margin-top: 28px;
}

.low-noise-points {
  max-width: 860px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.low-noise-points li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: #173040;
  font-size: 17px;
  line-height: 1.8;
}

.low-noise-points li::before {
  content: "";
  flex: 0 0 6px;
  width: 6px;
  height: 6px;
  margin-top: 11px;
  background: #00a7e1;
}

.system-notes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.system-note {
  padding: 16px;
  border: 1px solid #d8e8f2;
  border-top: 3px solid #00a7e1;
  background: #fff;
}

.system-note strong {
  display: block;
  margin-bottom: 6px;
  font-size: 15px;
  font-weight: 400;
  color: #173040;
}

.system-note p {
  margin: 0;
  font-size: 13px;
  line-height: 1.65;
  color: #445;
}

/* tech notes */
.tech-notes {
  margin: 30px 0 0;
  padding: 20px 24px;
  background: #fafcfd;
  border: 1px solid #d8e8f2;
  border-top: 3px solid #00a7e1;
}

/* watermark on feature images only (below 特点/特征 heading) */
.detail-block figure {
  position: relative;
}

.detail-block figure::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  opacity: 0.12;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='140'%3E%3Ctext x='50%25' y='50%25' text-anchor='middle' dominant-baseline='middle' font-family='sans-serif' font-size='16' font-weight='700' fill='%2300a7e1' transform='rotate(-30 120 70)'%3EPolaris %E5%B8%95%E9%94%90%E6%96%AF%3C/text%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 240px 140px;
}

/* watermark stays on figures; lightbox watermark handled via .lightbox--gallery::after */

.tech-note-item {
  margin: 0 0 8px;
  font-size: 13px;
  line-height: 1.7;
  color: #333;
}

.tech-note-item:last-child {
  margin-bottom: 0;
}

.two-col {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 28px;
  align-items: center;
}

.two-col img {
  width: 100%;
  border: 1px solid #ddd;
}

.two-col ul {
  margin: 0;
  padding-left: 20px;
  line-height: 1.9;
}

.feature-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.82fr);
  gap: 34px;
  align-items: center;
  margin-bottom: 28px;
}

.feature-panel h4 {
  margin: 0 0 18px;
  padding: 18px 22px;
  color: #111;
  background: #e9e9e9;
  border-left: 6px solid #00a7e1;
  font-size: 24px;
  line-height: 1.35;
}

.feature-panel figure,
.scene-gallery figure {
  margin: 0;
}

.feature-panel img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 1px solid #d8e8f2;
}

.feature-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
  line-height: 1.75;
}

.feature-list li {
  position: relative;
  padding-left: 18px;
}

.feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 6px;
  height: 6px;
  background: #00a7e1;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 2px solid #00a7e1;
  border-left: 1px solid #d7e6ef;
}

.feature-grid div {
  min-height: 126px;
  padding: 22px;
  border-right: 1px solid #d7e6ef;
  border-bottom: 1px solid #d7e6ef;
}

.feature-grid strong {
  display: block;
  margin-bottom: 9px;
  color: #111;
  font-size: 18px;
}

.feature-grid p {
  margin: 0;
  color: #4d5f6b;
  line-height: 1.75;
}

.feature-grid--performance {
  margin-bottom: 40px;
}

.tech-advantage-list {
  display: grid;
  gap: 14px;
}

.tech-advantage-list article {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  overflow: hidden;
  border: 1px solid #00a7e1;
  background: #fff;
}

.tech-advantage-list strong {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18px 20px;
  color: #fff;
  background: #00a7e1;
  font-size: 18px;
  font-weight: 400;
  text-align: center;
}

.tech-advantage-list p {
  margin: 0;
  padding: 16px 22px;
  color: #173040;
  line-height: 1.75;
}

.component-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.component-grid article {
  padding: 18px 20px;
  background: #fff;
  border: 1px solid #d8e8f2;
  border-top: 3px solid #00a7e1;
}

.component-grid strong {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
  color: #111;
  font-size: 18px;
  font-weight: 400;
}

.component-grid strong::before {
  content: "";
  flex: 0 0 6px;
  width: 6px;
  height: 6px;
  background: #00a7e1;
}

.component-grid p {
  margin: 0;
  color: #4d5f6b;
  line-height: 1.75;
}

.scene-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.scene-gallery figure {
  overflow: hidden;
  background: #fff;
  border: 1px solid #d8e8f2;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.scene-gallery figure:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(25, 77, 110, 0.08);
}

.scene-gallery img {
  cursor: pointer;
  transition: opacity 0.2s ease;
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.scene-gallery img:hover {
  opacity: 0.85;
}

.scene-gallery figcaption {
  padding: 13px 16px;
  color: #173040;
  background: #fff;
  border-top: 1px solid #d8e8f2;
  font-weight: 400;
}

.result-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 2px solid #00a7e1;
  border-left: 1px solid #d7e6ef;
}

.result-list span {
  min-height: 74px;
  padding: 20px 18px;
  border-right: 1px solid #d7e6ef;
  border-bottom: 1px solid #d7e6ef;
  color: #173040;
  font-weight: 400;
  line-height: 1.55;
}

.spec-table-wrap {
  max-width: 100%;
  min-width: 0;
  overflow-x: auto;
  border: 1px solid #c8c8c8;
}

.spec-table-wrap table {
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
  font-size: 15px;
}

.spec-table-wrap th,
.spec-table-wrap td {
  padding: 12px 10px;
  border: 1px solid #c8c8c8;
  text-align: center;
  vertical-align: middle;
}

.spec-table-wrap thead th {
  color: #111;
  background: #bed9e8;
  font-weight: 400;
}

.spec-table-wrap tbody th {
  text-align: center;
  background: #f3f3f3;
}

.spec-table-wrap tr:nth-child(even) td {
  background: #f1f1f1;
}

.spec-table-wrap--wide table {
  min-width: 1120px;
  font-size: 14px;
}

.spec-table-wrap--xwide table {
  min-width: 1340px;
  font-size: 13px;
}

.spec-table-wrap--wide tbody th:first-child {
  min-width: 84px;
  color: #fff;
  background: #34a9d4;
  text-align: center;
}

.spec-table-wrap--wide tbody th:nth-child(2) {
  min-width: 110px;
  background: #f6f6f6;
  text-align: center;
}

.spec-notes {
  display: grid;
  gap: 6px;
  margin: 14px 0 0;
  padding: 16px 18px;
  color: #4d5f6b;
  background: #f7fbfe;
  border: 1px solid #d8e8f2;
  line-height: 1.65;
  list-style-position: inside;
}

.product-side {
  position: sticky;
  top: 148px;
  overflow: hidden;
  background: #fff;
  border: 1px solid #d7e4ec;
  box-shadow: 0 12px 28px rgba(25, 77, 110, 0.07);
}

.product-side h3 {
  position: relative;
  overflow: hidden;
  margin: 0;
  padding: 22px 20px 24px;
  color: #082136;
  background:
    linear-gradient(96deg, #fff 0 42%, #edf8ff 100%),
    #fff;
  border-top: 3px solid #00a7e1;
  border-bottom: 1px solid #cfe2ee;
  font-size: 18px;
  text-align: center;
}

.product-side h3::before {
  content: "";
  position: absolute;
  left: -16%;
  right: -16%;
  bottom: -40px;
  height: 76px;
  border-top: 1px solid rgba(0, 167, 225, 0.15);
  border-radius: 50% 50% 0 0 / 100% 100% 0 0;
  background: linear-gradient(180deg, rgba(0, 167, 225, 0.06), transparent 62%);
  transform: rotate(-3deg);
}

.product-side h3::after {
  content: "";
  position: absolute;
  top: 18px;
  right: 16px;
  width: 66px;
  height: 44px;
  background-image: radial-gradient(circle, rgba(0, 167, 225, 0.11) 1px, transparent 1.7px);
  background-size: 10px 10px;
  opacity: 0.38;
}

.side-tab {
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  min-height: 54px;
  padding: 12px 12px 12px 22px;
  color: #173040;
  background: #fff;
  border: 0;
  border-bottom: 1px solid #e0e8ee;
  text-align: left;
  font-weight: 400;
  cursor: pointer;
  transition: color 0.2s ease, background-color 0.2s ease;
}

.side-tab::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 16px;
  bottom: 16px;
  width: 3px;
  background: #00a7e1;
  opacity: 0;
}

.side-tab span {
  position: relative;
  width: 18px;
  height: 18px;
  background: #f3f9fd;
  border: 1px solid #d4e7f1;
}

.side-tab span::before,
.side-tab span::after {
  content: "";
  position: absolute;
  left: 4px;
  right: 4px;
  top: 8px;
  height: 1px;
  background: #00a7e1;
}

.side-tab span::after {
  transform: rotate(90deg);
}

.side-tab:hover,
.side-tab.is-active {
  color: #00a7e1;
  background: #f3f9fd;
}

.side-tab.is-active::before {
  opacity: 1;
}

.side-tab.is-active span::after {
  transform: rotate(0deg);
}

.side-contact {
  position: relative;
  overflow: hidden;
  margin-top: 24px;
  padding: 24px 22px;
  color: #082136;
  background:
    linear-gradient(96deg, #fff 0 44%, rgba(237, 248, 255, 0.95) 100%),
    #f5fbff;
  border: 1px solid #cfe2ee;
  border-top: 3px solid #00a7e1;
  text-align: center;
  line-height: 1.65;
  box-shadow: 0 12px 28px rgba(25, 77, 110, 0.07);
}

.side-contact::before {
  content: "";
  position: absolute;
  left: -18%;
  right: -16%;
  bottom: -38px;
  height: 84px;
  border-top: 1px solid rgba(0, 167, 225, 0.14);
  border-radius: 50% 50% 0 0 / 100% 100% 0 0;
  background: linear-gradient(180deg, rgba(0, 167, 225, 0.06), transparent 60%);
  transform: rotate(-4deg);
}

.side-contact::after {
  content: "";
  position: absolute;
  right: 18px;
  top: 16px;
  width: 72px;
  height: 52px;
  background-image: radial-gradient(circle, rgba(0, 167, 225, 0.1) 1px, transparent 1.8px);
  background-size: 10px 10px;
  opacity: 0.34;
}

.side-contact strong {
  position: relative;
  z-index: 1;
  display: block;
  margin-bottom: 10px;
}

.side-contact p {
  position: relative;
  z-index: 1;
  margin: 0;
}

.side-contact a {
  position: relative;
  z-index: 1;
  display: block;
  margin-top: 16px;
  padding: 9px 12px;
  color: #fff;
  background: #00a7e1;
  border: 1px solid #00a7e1;
  font-weight: 400;
  transition: background-color 0.2s ease, transform 0.2s ease;
}

.side-contact a:hover {
  background: #005f96;
  transform: translateY(-1px);
}

@media (max-width: 1080px) {
  html {
    scroll-padding-top: 88px;
  }

  .detail-block {
    scroll-margin-top: 88px;
  }

  .site-header,
  .site-header.is-scrolled {
    min-height: 72px;
  }

  .header-top {
    height: 72px;
    padding: 8px 18px;
  }

  .brand img {
    width: 104px;
  }

  .menu-toggle {
    display: block;
    position: absolute;
    right: 18px;
    top: 14px;
  }

  .top-nav {
    position: fixed;
    top: 72px;
    left: 0;
    width: 100%;
    height: auto;
    display: grid;
    padding: 0 18px 18px;
    background: #fff;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    transform: translateY(-130%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.25s ease, opacity 0.25s ease;
  }

  .top-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .top-nav a {
    justify-content: flex-start;
    width: 100%;
    height: 54px;
    min-width: 0;
    border-bottom: 1px solid var(--line);
  }

  .hero {
    padding-top: 72px;
  }

  .hero-slide {
    inset: 72px 0 auto;
    height: auto;
    min-height: 650px;
  }

  .hero-slide img {
    width: 100%;
    height: 340px;
    object-fit: cover;
    object-position: 23% center;
  }

  .hero-cut {
    position: relative;
    width: 100%;
    height: 310px;
    padding: 42px 26px;
    clip-path: polygon(0 0, 100% 0, 100% 100%, 0 92%);
  }

  .hero-cut h1 {
    font-size: 36px;
  }

  .hero-dots {
    gap: 8px;
    height: 24px;
    margin: 14px auto 30px;
  }

  .hero-dots button {
    width: 28px;
  }

  .detail-layout {
    grid-template-columns: 1fr;
  }

  .product-side {
    position: static;
    order: -1;
  }

  .detail-overview,
  .detail-overview--large,
  .feature-panel,
  .two-col {
    grid-template-columns: 1fr;
  }

  .feature-icons {
    grid-template-columns: repeat(3, 1fr);
  }

  .feature-icons--wide li:nth-child(1),
  .feature-icons--wide li:nth-child(2),
  .feature-icons--wide li:nth-child(7),
  .feature-icons--wide li:nth-child(8) {
    grid-column: span 1;
  }

  .feature-grid,
  .component-grid,
  .scene-gallery,
  .result-list {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .tech-advantage-list article {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .breadcrumb {
    width: calc(100% - 36px);
    margin-bottom: 30px;
    overflow-x: auto;
    white-space: nowrap;
  }

  .detail-layout {
    width: calc(100% - 36px);
  }

  .detail-heading h2 {
    padding: 24px 18px;
    font-size: 30px;
  }

  .detail-heading p {
    padding: 18px;
    font-size: 17px;
  }

  .summary-lines div {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .model-image {
    min-height: 260px;
  }

  .model-image img {
    max-height: 260px;
  }

  .feature-icons,
  .detail-tabs {
    grid-template-columns: repeat(2, 1fr);
  }

  .feature-icons--wide {
    grid-template-columns: repeat(2, 1fr);
  }

  .feature-grid,
  .component-grid,
  .scene-gallery,
  .result-list {
    grid-template-columns: 1fr;
  }

  .motion-card {
    min-height: 320px;
  }

  .feature-lead {
    font-size: 20px;
  }
}