:root {
  --navy-950: #04101f;
  --navy-900: #07172f;
  --navy-800: #0b2343;
  --navy-700: #10335b;
  --blue: #0e6db8;
  --blue-2: #31a8ff;
  --cyan: #24e0d2;
  --cyan-soft: #a8fff7;
  --ink: #10263f;
  --muted: #465c73;
  --line: #dce6f2;
  --surface: #f4f8fd;
  --surface-2: #eaf2fc;
  --white: #ffffff;
  --danger: #bf3b48;
  --shadow: 0 24px 70px rgba(10, 44, 88, 0.13);
  --radius: 18px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font: 16px/1.72 "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", sans-serif;
  -webkit-font-smoothing: antialiased;
}

a {
  color: #1267bf;
  text-decoration: none;
}

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

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

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

.container {
  width: min(1240px, calc(100% - 48px));
  margin: 0 auto;
}

.narrow {
  width: min(840px, calc(100% - 48px));
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid rgba(73, 137, 207, 0.22);
  background: rgba(4, 16, 31, 0.93);
  backdrop-filter: blur(16px);
}

.nav-shell {
  min-height: 70px;
  display: flex;
  align-items: center;
  gap: 26px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  min-width: 220px;
  color: #fff;
}

.brand:hover {
  color: #fff;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border: 1px solid rgba(68, 224, 255, 0.58);
  border-radius: 13px;
  background:
    radial-gradient(circle at 15% 15%, rgba(255, 255, 255, 0.28), transparent 32%),
    linear-gradient(135deg, #146ed3, #25d8d0);
  color: #fff;
  font: 800 13px/1 Arial, sans-serif;
  letter-spacing: 0.6px;
  box-shadow: 0 0 25px rgba(36, 224, 210, 0.22);
}

.brand-copy {
  display: grid;
  line-height: 1.25;
}

.brand-copy strong {
  color: #fff;
  font-size: 16px;
  letter-spacing: 0.2px;
}

.brand-copy small {
  margin-top: 4px;
  color: #87a8ca;
  font-size: 10.5px;
  letter-spacing: 0.5px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-left: auto;
}

.main-nav a {
  padding: 10px 9px;
  border-bottom: 2px solid transparent;
  color: #c6d8ea;
  font-size: 14px;
  white-space: nowrap;
}

.main-nav a:hover,
.main-nav a.active {
  border-bottom-color: var(--cyan);
  color: #fff;
}

.main-nav .lang-switch {
  margin-left: 8px;
  padding: 8px 11px;
  border: 1px solid rgba(96, 195, 255, 0.45);
  border-radius: 8px;
  color: var(--cyan-soft);
}

.nav-toggle {
  display: none;
  margin-left: auto;
  border: 0;
  background: transparent;
  color: #fff;
  font-size: 25px;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 74px 0 68px;
  background:
    radial-gradient(900px 520px at 78% 12%, rgba(25, 118, 210, 0.36), transparent 66%),
    radial-gradient(700px 460px at 8% 100%, rgba(36, 224, 210, 0.16), transparent 64%),
    linear-gradient(150deg, var(--navy-950), var(--navy-800) 62%, #0e3a66);
  color: #e7f1fc;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(90, 161, 227, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(90, 161, 227, 0.08) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(circle at 60% 48%, #000 34%, transparent 82%);
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(390px, 0.88fr);
  gap: 48px;
  align-items: center;
}

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

.eyebrow,
.section-head > span {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 13px;
  color: #0b67aa;
  font: 700 12px/1.2 Arial, sans-serif;
  letter-spacing: 2.1px;
  text-transform: uppercase;
}

.eyebrow::before,
.section-head > span::before {
  content: "";
  width: 25px;
  height: 1px;
  background: currentColor;
}

.hero .eyebrow {
  color: #69e6e1;
}

.hero h1,
.page-head h1,
.product-hero h1 {
  margin: 0 0 20px;
  color: #fff;
  font-size: clamp(40px, 5.3vw, 64px);
  line-height: 1.12;
  letter-spacing: -1.6px;
}

.hero h1 em {
  color: transparent;
  background: linear-gradient(90deg, #66c7ff, #4ff0dc);
  background-clip: text;
  -webkit-background-clip: text;
  font-style: normal;
}

.lead {
  max-width: 680px;
  margin: 0 0 26px;
  color: #b9cee3;
  font-size: 17px;
  line-height: 1.85;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 27px;
}

.button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  padding: 10px 18px;
  border: 1px solid #b9cfe5;
  border-radius: 9px;
  background: #fff;
  color: #135fa9;
  font-weight: 700;
  cursor: pointer;
  transition: 160ms ease;
}

.button:hover {
  transform: translateY(-1px);
  border-color: #5aa6dc;
  color: #0d5a9e;
}

.button.primary {
  border-color: transparent;
  background: linear-gradient(135deg, #167adb, #20b6d6);
  color: #fff;
  box-shadow: 0 11px 28px rgba(20, 119, 197, 0.28);
}

.hero .button:not(.primary) {
  border-color: rgba(116, 185, 242, 0.4);
  background: rgba(255, 255, 255, 0.05);
  color: #dbeefa;
}

.hero .button:not(.primary):hover {
  background: rgba(255, 255, 255, 0.1);
}

.molecule-stage {
  position: relative;
  padding: 8px 0 62px;
}

.molecule {
  width: min(520px, 100%);
  margin: 0 auto;
  filter: drop-shadow(0 18px 45px rgba(36, 128, 217, 0.25));
}

.element-row {
  position: absolute;
  right: 0;
  bottom: 16px;
  left: 0;
  display: flex;
  justify-content: center;
  gap: 9px;
}

.element-row span {
  position: relative;
  width: 78px;
  min-height: 84px;
  padding: 10px;
  border: 1px solid rgba(94, 177, 241, 0.38);
  border-radius: 10px;
  background: rgba(5, 21, 41, 0.75);
  color: #d8efff;
}

.element-row i {
  color: #6bb3e1;
  font: 10px/1 Arial, sans-serif;
}

.element-row b {
  display: block;
  margin: 3px 0 2px;
  color: #fff;
  font-size: 24px;
}

.element-row small {
  color: #83a9c8;
  font-size: 9px;
  letter-spacing: 0.3px;
}

.metrics-strip {
  position: relative;
  z-index: 3;
  margin-top: -25px;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--line);
  border-radius: 15px;
  background: #fff;
  box-shadow: var(--shadow);
}

.metric-grid div {
  display: grid;
  padding: 24px 28px;
  border-right: 1px solid var(--line);
}

.metric-grid div:last-child {
  border-right: 0;
}

.metric-grid strong {
  color: var(--navy-700);
  font: 800 27px/1.2 Arial, sans-serif;
}

.metric-grid span {
  margin-top: 4px;
  color: var(--muted);
  font-size: 12.5px;
}

.section {
  padding: 76px 0;
}

.light-section,
.alt-section {
  border-block: 1px solid var(--line);
  background: var(--surface);
}

.dark-section {
  background: linear-gradient(145deg, var(--navy-950), var(--navy-800));
}

.section-head {
  max-width: 780px;
  margin-bottom: 31px;
}

.section-head h2 {
  margin: 0 0 11px;
  color: var(--ink);
  font-size: clamp(29px, 3.4vw, 42px);
  line-height: 1.22;
  letter-spacing: -0.7px;
  text-wrap: balance;
}

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

.dark-section .section-head h2 {
  color: #fff;
}

.dark-section .section-head p {
  color: #c3d8e8;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  align-items: stretch;
}

.product-grid > * {
  min-width: 0;
}

.product-grid-large {
  margin-top: 28px;
}

.product-card {
  min-height: 262px;
  display: flex;
  flex-direction: column;
  padding: 23px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(239, 247, 255, 0.78), transparent 44%),
    #fff;
  color: var(--ink);
  transition: 180ms ease;
}

.product-card:hover {
  transform: translateY(-4px);
  border-color: #8bbde7;
  box-shadow: 0 18px 42px rgba(22, 89, 153, 0.12);
  color: var(--ink);
}

.card-code,
.product-code {
  display: inline-block;
  width: max-content;
  margin-bottom: 12px;
  padding: 3px 8px;
  border-radius: 6px;
  background: #e4f2ff;
  color: #1266ad;
  font: 800 12px/1.4 Arial, sans-serif;
  letter-spacing: 0.6px;
}

.product-card h3 {
  margin: 0 0 10px;
  color: var(--ink);
  font-size: 19px;
  line-height: 1.42;
  text-wrap: balance;
}

.product-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.75;
  text-wrap: pretty;
}

.text-link {
  margin-top: auto;
  padding-top: 18px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 700;
}

.document-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.document-button {
  display: inline-grid;
  grid-template-columns: minmax(76px, 1fr) auto auto;
  min-height: 42px;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid #bfd6e8;
  border-radius: 8px;
  background: #fff;
  font-size: 12.5px;
}

.document-button-label {
  display: grid;
  color: #184e78;
  font-weight: 700;
  line-height: 1.35;
}

.document-button-label small {
  color: var(--muted);
  font-size: 10px;
  font-weight: 500;
}

.document-button > a {
  padding: 4px 6px;
  border-radius: 5px;
  color: #0c65a8;
  font-size: 11.5px;
  font-weight: 700;
  white-space: nowrap;
}

.document-button > a:hover {
  background: #e9f5ff;
}

.hero .document-button {
  border-color: rgba(116, 185, 242, 0.45);
  background: rgba(255, 255, 255, 0.07);
}

.hero .document-button-label {
  color: #dff2ff;
}

.hero .document-button-label small {
  color: #a9c8df;
}

.hero .document-button > a {
  color: #bcecff;
}

.hero .document-button > a:hover {
  background: rgba(99, 192, 239, 0.13);
}

.downloads-layout {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(320px, 1fr);
  gap: 38px;
  align-items: start;
}

.document-list {
  display: grid;
  gap: 12px;
  margin: 18px 0 30px;
}

.document-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 20px;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background:
    linear-gradient(180deg, rgba(235, 245, 255, 0.9), rgba(255, 255, 255, 0) 62%),
    #fff;
}

.document-card-title {
  display: grid;
  gap: 5px;
}

.document-card-title > span {
  width: max-content;
  padding: 2px 7px;
  border-radius: 5px;
  background: #e4f2ff;
  color: #0c65a8;
  font: 700 10px/1.4 Arial, sans-serif;
  letter-spacing: 0.7px;
}

.document-card h3 {
  margin: 0;
  color: var(--ink);
  font-size: 16px;
  line-height: 1.5;
}

.document-card-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.section-action {
  margin-top: 28px;
  text-align: center;
}

.app-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

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

.app-card {
  min-height: 188px;
  padding: 22px;
  border: 1px solid rgba(99, 161, 216, 0.23);
  border-radius: 14px;
  background: rgba(8, 28, 52, 0.46);
  color: #e6f2fd;
  transition: 180ms ease;
}

.app-card:hover {
  transform: translateY(-3px);
  border-color: rgba(68, 222, 221, 0.55);
  background: rgba(10, 39, 72, 0.72);
  color: #fff;
}

.app-card h3 {
  margin: 0 0 9px;
  color: #fff;
  font-size: 18px;
  line-height: 1.45;
  text-wrap: balance;
}

.app-card p {
  margin: 0;
  color: #c7d9e8;
  font-size: 14px;
  line-height: 1.72;
  text-wrap: pretty;
}

.application-catalog .app-card {
  min-height: 210px;
  border-color: var(--line);
  background:
    linear-gradient(180deg, rgba(235, 245, 255, 0.88), transparent 48%),
    #fff;
  color: var(--ink);
}

.application-catalog .app-card:hover {
  border-color: #8bbde7;
  background:
    linear-gradient(180deg, rgba(225, 240, 255, 0.96), transparent 56%),
    #fff;
  color: var(--ink);
  box-shadow: 0 16px 38px rgba(22, 89, 153, 0.11);
}

.application-catalog .app-card h3 {
  color: var(--ink);
}

.application-catalog .app-card p {
  color: var(--muted);
}

.split-section {
  display: grid;
  grid-template-columns: 0.78fr 1.22fr;
  gap: 44px;
  align-items: start;
}

.knowledge-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 15px;
}

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

.knowledge-card {
  min-height: 168px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background:
    linear-gradient(180deg, rgba(239, 247, 255, 0.82), transparent 48%),
    #fff;
  color: var(--ink);
  transition: 160ms ease;
}

.knowledge-card:hover {
  transform: translateY(-2px);
  border-color: #9ac6e8;
  box-shadow: 0 12px 30px rgba(25, 89, 150, 0.09);
  color: var(--ink);
}

.tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  background: #e7f6f5;
  color: #055f5b;
  font-size: 11px;
  font-weight: 700;
}

.knowledge-card h3 {
  margin: 10px 0 8px;
  color: var(--ink);
  font-size: 16px;
  line-height: 1.45;
  text-wrap: balance;
}

.knowledge-card .tag {
  margin-top: 2px;
}

.knowledge-card p {
  margin: 0;
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.72;
  text-wrap: pretty;
}

.product-card,
.application-catalog .app-card,
.knowledge-card {
  display: flex;
  height: 100%;
  flex-direction: column;
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(235, 245, 255, 0.9), rgba(255, 255, 255, 0) 52%),
    #fff;
  color: var(--ink);
  box-shadow: 0 8px 24px rgba(20, 76, 126, 0.055);
}

.product-card h3,
.application-catalog .app-card h3,
.knowledge-card h3 {
  color: var(--ink);
}

.product-card p,
.application-catalog .app-card p,
.knowledge-card p {
  color: var(--muted);
}

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

.video-card {
  display: block;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #fff;
  color: var(--ink);
  transition: 180ms ease;
}

.video-card:hover {
  transform: translateY(-3px);
  border-color: #8bbcdf;
  box-shadow: var(--shadow);
}

.video-frame {
  position: relative;
  min-height: 210px;
  display: grid;
  place-items: center;
  overflow: hidden;
  background:
    radial-gradient(circle at 55% 48%, rgba(36, 224, 210, 0.24), transparent 34%),
    linear-gradient(145deg, #06162c, #0e3560);
}

.video-trigger {
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  text-align: left;
  cursor: pointer;
}

.video-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(100, 185, 239, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(100, 185, 239, 0.08) 1px, transparent 1px);
  background-size: 32px 32px;
}

.play-icon {
  position: relative;
  display: grid;
  width: 58px;
  height: 58px;
  place-items: center;
  border: 1px solid rgba(104, 243, 233, 0.7);
  border-radius: 50%;
  color: #7df6e9;
  font-size: 18px;
  box-shadow: 0 0 30px rgba(36, 224, 210, 0.22);
}

.episode,
.video-action {
  position: absolute;
  color: #c1dcef;
  font: 700 11px/1 Arial, sans-serif;
  letter-spacing: 0.8px;
}

.episode {
  top: 16px;
  left: 17px;
}

.video-action {
  right: 16px;
  bottom: 15px;
}

.video-info {
  display: grid;
  gap: 6px;
  padding: 18px;
}

.video-info strong {
  color: var(--ink);
  font-size: 16px;
  line-height: 1.5;
}

.video-info small {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.65;
}

.video-info a {
  margin-top: 3px;
  font-size: 12px;
  font-weight: 700;
}

.contact-panel {
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  gap: 46px;
  align-items: start;
  padding: 38px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--surface);
}

.contact-panel h2 {
  margin: 5px 0 13px;
  font-size: 34px;
  line-height: 1.3;
}

.contact-panel p {
  color: var(--muted);
}

.contact-mini {
  display: grid;
  gap: 4px;
  margin-top: 22px;
  font-weight: 700;
}

.wechat-card {
  display: grid;
  grid-template-columns: 132px minmax(0, 1fr);
  gap: 18px;
  align-items: center;
  margin-top: 25px;
  padding: 16px;
  border: 1px solid #cfe0ef;
  border-radius: 14px;
  background: #fff;
  color: var(--ink);
}

.wechat-card.compact {
  grid-template-columns: 102px minmax(0, 1fr);
  max-width: 360px;
  margin-top: 18px;
  padding: 12px;
}

.wechat-qr {
  display: block;
  overflow: hidden;
  aspect-ratio: 1;
  border: 1px solid #dbe7f2;
  border-radius: 9px;
  background: #fff;
}

.wechat-qr img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.wechat-placeholder {
  display: grid;
  width: 96px;
  height: 96px;
  place-items: center;
  border-radius: 20px;
  background: #0aa85f;
  color: #fff;
  font-size: 32px;
  font-weight: 800;
}

.wechat-card .eyebrow {
  margin-bottom: 5px;
  font-size: 10px;
}

.wechat-card h3 {
  margin: 0 0 5px;
  color: var(--ink);
  font-size: 17px;
}

.wechat-card p {
  margin: 0 0 7px;
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.6;
}

.wechat-card strong {
  color: #0a6e54;
  font-size: 13px;
}

.inquiry-form {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 15px;
  background: #fff;
}

.inquiry-form.compact {
  padding: 18px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 13px;
}

.inquiry-form label {
  display: grid;
  gap: 6px;
  margin-bottom: 13px;
}

.inquiry-form label span {
  color: #405672;
  font-size: 12px;
  font-weight: 700;
}

.inquiry-form input,
.inquiry-form select,
.inquiry-form textarea {
  width: 100%;
  min-height: 46px;
  padding: 10px 12px;
  border: 1px solid #cbd9e8;
  border-radius: 8px;
  background: #fbfdff;
  color: var(--ink);
  outline: none;
}

.inquiry-form textarea {
  min-height: 126px;
}

.inquiry-form input::placeholder,
.inquiry-form textarea::placeholder {
  color: #627587;
}

.inquiry-form input:focus,
.inquiry-form select:focus,
.inquiry-form textarea:focus {
  border-color: #4b9ede;
  box-shadow: 0 0 0 3px rgba(37, 132, 211, 0.1);
}

.honeypot {
  position: absolute !important;
  left: -9999px !important;
  width: 1px !important;
  height: 1px !important;
}

.form-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.form-foot p,
.form-status {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
}

.form-status {
  min-height: 20px;
  margin-top: 9px;
  color: #11716b;
}

.success-message {
  margin-bottom: 15px;
  padding: 13px 16px;
  border: 1px solid #a6d9d3;
  border-radius: 9px;
  background: #effdfa;
  color: #0b736d;
}

.site-footer {
  padding: 56px 0 25px;
  background: var(--navy-950);
  color: #acc2d8;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr repeat(3, 1fr);
  gap: 36px;
}

.footer-grid > div {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 7px;
}

.footer-brand {
  display: grid;
  width: 52px;
  height: 52px;
  place-items: center;
  margin-bottom: 9px;
  border: 1px solid rgba(93, 217, 242, 0.45);
  border-radius: 13px;
  color: #fff;
  font: 800 12px/1 Arial, sans-serif;
}

.footer-grid h3 {
  margin: 0 0 5px;
  color: #fff;
  font-size: 14px;
}

.footer-grid a {
  color: #c4d7e9;
  font-size: 13px;
}

.muted {
  color: #abc0d2;
  font-size: 13px;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 22px;
  margin-top: 36px;
  padding-top: 20px;
  border-top: 1px solid rgba(94, 146, 191, 0.2);
  color: #9fb5c8;
  font-size: 12px;
}

.page-head,
.product-hero {
  position: relative;
  padding: 72px 0 61px;
  overflow: hidden;
  background:
    radial-gradient(620px 340px at 88% 15%, rgba(25, 131, 221, 0.32), transparent 65%),
    linear-gradient(145deg, var(--navy-950), var(--navy-800));
  color: #dcecfb;
}

.page-head::after,
.product-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(100, 175, 235, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(100, 175, 235, 0.07) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(90deg, transparent 2%, #000 70%, transparent);
}

.page-head .container,
.product-hero .container {
  position: relative;
  z-index: 1;
}

.page-head h1,
.product-hero h1 {
  font-size: clamp(35px, 4.6vw, 54px);
  max-width: 900px;
  text-wrap: balance;
}

.page-head > .container > p,
.product-hero .lead {
  max-width: 800px;
  margin-bottom: 0;
  color: #d1e2f0;
}

.page-summary {
  max-width: 850px;
  margin: 20px 0 0;
  color: #d5e6f3;
  font-size: 15px;
  line-height: 1.8;
}

.article-head h1 {
  max-width: 920px;
}

.search-box {
  display: flex;
  max-width: 720px;
  margin-top: 24px;
  border: 1px solid rgba(113, 191, 240, 0.48);
  border-radius: 11px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.08);
}

.search-box input {
  min-width: 0;
  flex: 1;
  padding: 13px 16px;
  border: 0;
  background: transparent;
  color: #fff;
  outline: none;
}

.search-box input::placeholder {
  color: #b4cee2;
}

.search-box button {
  padding: 0 22px;
  border: 0;
  background: rgba(72, 199, 220, 0.2);
  color: #bffcf4;
  cursor: pointer;
}

.table-wrap {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: #fff;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

th,
td {
  padding: 13px 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

thead th {
  background: #eaf3fc;
  color: #183a5a;
  font-size: 12.5px;
  letter-spacing: 0.2px;
}

tbody tr:last-child th,
tbody tr:last-child td {
  border-bottom: 0;
}

tbody tr:hover {
  background: #f8fbff;
}

.model-link {
  color: #0b67b8;
  font-weight: 800;
}

.note {
  margin: 12px 0 26px;
  color: var(--muted);
  font-size: 12.5px;
}

.product-hero-grid {
  display: grid;
  grid-template-columns: 1fr 0.58fr;
  gap: 44px;
  align-items: center;
}

.product-code {
  margin-bottom: 17px;
  background: rgba(38, 214, 217, 0.14);
  color: #7ff4ec;
  font-size: 14px;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chips span {
  padding: 5px 10px;
  border: 1px solid rgba(116, 184, 238, 0.34);
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.05);
  color: #cae4f8;
  font: 12px/1.4 Arial, sans-serif;
}

.product-panel {
  padding: 28px;
  border: 1px solid rgba(99, 188, 232, 0.33);
  border-radius: 20px;
  background:
    radial-gradient(circle at 80% 20%, rgba(36, 224, 210, 0.2), transparent 30%),
    rgba(4, 21, 42, 0.58);
  box-shadow: 0 25px 70px rgba(0, 0, 0, 0.19);
}

.product-panel > span {
  color: #75ddd8;
  font-size: 12px;
  letter-spacing: 1px;
}

.product-panel strong {
  display: block;
  margin: 13px 0 7px;
  color: #fff;
  font: 800 42px/1.1 Arial, sans-serif;
}

.product-panel p {
  color: #afc6da;
}

.detail-grid,
.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 315px;
  gap: 38px;
  align-items: start;
}

.detail-grid > article > h2,
.article-body h2 {
  margin: 45px 0 15px;
  font-size: 28px;
  line-height: 1.35;
}

.detail-grid > article > h2:first-child {
  margin-top: 0;
}

.feature-list {
  display: grid;
  gap: 9px;
  margin: 16px 0;
  padding-left: 20px;
  color: #354d68;
}

.faq-list {
  display: grid;
  gap: 9px;
}

.faq-list details {
  padding: 15px 17px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
}

.faq-list summary {
  color: #183d61;
  font-weight: 700;
  cursor: pointer;
}

.faq-list p {
  margin: 11px 0 0;
  color: var(--muted);
}

.sticky-aside {
  position: sticky;
  top: 94px;
  display: grid;
  gap: 14px;
}

.aside-card {
  display: grid;
  gap: 8px;
  padding: 19px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: var(--surface);
}

.aside-card h3 {
  margin: 0 0 3px;
  color: var(--ink);
  font-size: 16px;
}

.aside-card a {
  padding: 2px 0;
  color: #315b80;
  font-size: 13px;
}

.aside-card .knowledge-card {
  min-height: 0;
  padding: 12px;
  background: #fff;
}

.aside-card .knowledge-card h3 {
  font-size: 14px;
}

.aside-card .knowledge-card p {
  display: none;
}

.aside-card .inquiry-form .form-grid {
  grid-template-columns: 1fr;
}

.aside-card .form-foot {
  align-items: stretch;
  flex-direction: column;
}

.aside-card .form-foot .button {
  width: 100%;
  white-space: nowrap;
}

.article-body {
  font-size: 16px;
  line-height: 1.9;
  color: #2e435a;
}

.article-body p {
  margin: 0 0 20px;
}

.article-meta,
.back-link {
  color: #9bb8d1;
  font-size: 12px;
}

.article-head .tag {
  margin-bottom: 16px;
}

.source-note {
  margin: 33px 0;
  padding: 17px 19px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

.source-note strong {
  color: var(--ink);
}

.source-note p {
  margin: 5px 0 0;
}

.article-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 38px;
  padding: 21px;
  border-radius: 13px;
  background: var(--surface-2);
}

.article-cta p {
  margin: 0;
  color: #274b6e;
  font-weight: 700;
}

.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 26px;
}

.filter-row a {
  padding: 7px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: #4b637b;
  font-size: 12px;
}

.filter-row a.active {
  border-color: #0f79bf;
  background: #137ac2;
  color: #fff;
}

.note-panel {
  margin-top: 26px;
  padding: 21px;
  border-left: 3px solid #1c86cf;
  background: var(--surface);
}

.note-panel p {
  margin: 6px 0 0;
  color: var(--muted);
}

.company-section {
  border-block: 1px solid var(--line);
  background:
    radial-gradient(600px 350px at 92% 12%, rgba(54, 170, 225, 0.1), transparent 65%),
    linear-gradient(180deg, #eef6ff, #fff);
}

.company-intro {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 52px;
  align-items: center;
}

.company-copy h2 {
  margin: 0 0 18px;
  font-size: clamp(30px, 3.6vw, 43px);
  line-height: 1.25;
  text-wrap: balance;
}

.company-copy p {
  margin: 0 0 25px;
  color: var(--muted);
  line-height: 1.9;
}

.company-feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.company-feature-card {
  padding: 20px;
  border: 1px solid #d7e4f1;
  border-top: 3px solid #4ba8d8;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 8px 24px rgba(24, 77, 124, 0.06);
}

.company-feature-card h3 {
  margin: 0 0 7px;
  color: var(--ink);
  font-size: 17px;
}

.company-feature-card p {
  margin: 0;
  color: var(--muted);
  font-size: 13.5px;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 0.72fr;
  align-items: center;
  gap: 40px;
}

.about-symbol {
  opacity: 0.9;
}

.about-profile {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(390px, 0.92fr);
  gap: 58px;
  align-items: start;
}

.about-profile-copy h2 {
  margin: 0 0 20px;
  font-size: clamp(30px, 3.4vw, 43px);
  line-height: 1.25;
  letter-spacing: -0.8px;
  text-wrap: balance;
}

.about-profile-copy > p {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 15.5px;
  line-height: 1.9;
}

.about-principle-line {
  display: grid;
  gap: 5px;
  margin: 25px 0;
  padding: 15px 18px;
  border-left: 3px solid var(--blue-2);
  border-radius: 0 10px 10px 0;
  background: var(--surface);
}

.about-principle-line span {
  color: #1478b8;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.2px;
}

.about-principle-line strong {
  color: var(--ink);
  font-size: 14px;
}

.about-capabilities {
  display: grid;
  gap: 13px;
}

.about-capability {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
  padding: 22px;
  border: 1px solid #d5e3f0;
  border-radius: 14px;
  background:
    linear-gradient(135deg, rgba(235, 246, 255, 0.94), rgba(255, 255, 255, 0.96));
}

.about-capability > span {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 10px;
  background: #0d71b8;
  color: #fff;
  font: 700 12px/1 Arial, sans-serif;
}

.about-capability h3 {
  margin: 0 0 7px;
  font-size: 17px;
}

.about-capability p {
  margin: 0;
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.75;
}

.about-contact {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 45px;
  padding-top: 37px;
  border-top: 1px solid var(--line);
}

.about-contact h2 {
  font-size: 17px;
}

.about-contact p {
  color: var(--muted);
  font-size: 14px;
}

.contact-layout {
  display: grid;
  grid-template-columns: 0.72fr 1.28fr;
  gap: 42px;
  align-items: start;
}

.contact-details {
  padding-right: 28px;
  border-right: 1px solid var(--line);
}

.contact-details > a {
  display: block;
  margin: 11px 0;
  color: #175b92;
  font-size: 21px;
  font-weight: 700;
}

.contact-details p,
.contact-details li {
  color: var(--muted);
}

.contact-details hr {
  margin: 28px 0;
  border: 0;
  border-top: 1px solid var(--line);
}

.search-results {
  display: grid;
  gap: 12px;
}

.search-results > a {
  display: grid;
  padding: 19px;
  border: 1px solid var(--line);
  border-radius: 11px;
  color: var(--ink);
}

.search-results > a:hover {
  border-color: #95c4e6;
}

.search-results span {
  color: #16817c;
  font-size: 11px;
  font-weight: 700;
}

.search-results h3 {
  margin: 6px 0;
}

.search-results p {
  margin: 0;
  color: var(--muted);
}

.video-modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: 28px;
  background: rgba(1, 8, 16, 0.86);
  backdrop-filter: blur(8px);
}

.video-modal[hidden] {
  display: none;
}

.video-modal-box {
  width: min(920px, 94vw);
  min-height: 360px;
  padding: 12px;
  border: 1px solid rgba(103, 207, 236, 0.42);
  border-radius: 16px;
  background: #061425;
}

.video-modal-box iframe {
  width: 100%;
  min-height: min(68vh, 720px);
  border: 0;
  border-radius: 10px;
  background: #000;
}

.video-modal-box .modal-fallback {
  padding: 34px;
  color: #d8eafa;
  text-align: center;
}

.video-modal-close {
  position: absolute;
  top: 18px;
  right: 22px;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(164, 220, 244, 0.4);
  border-radius: 50%;
  background: rgba(8, 28, 51, 0.8);
  color: #fff;
  font-size: 26px;
  cursor: pointer;
}

@media (max-width: 1100px) {
  .nav-shell {
    gap: 12px;
  }

  .main-nav a {
    padding: 10px 6px;
    font-size: 12.5px;
  }

  .brand-copy small {
    display: none;
  }

  .hero-grid {
    grid-template-columns: 1fr 0.85fr;
  }

}

@media (max-width: 860px) {
  .container {
    width: min(100% - 32px, 720px);
  }

  .brand {
    min-width: 0;
  }

  .nav-toggle {
    display: block;
  }

  .main-nav {
    position: absolute;
    top: 70px;
    right: 16px;
    left: 16px;
    display: none;
    max-height: calc(100vh - 85px);
    overflow-y: auto;
    flex-direction: column;
    align-items: stretch;
    padding: 10px;
    border: 1px solid rgba(84, 155, 211, 0.35);
    border-radius: 12px;
    background: #07182e;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
  }

  .main-nav.open {
    display: flex;
  }

  .main-nav a {
    padding: 11px 12px;
    font-size: 14px;
  }

  .main-nav .lang-switch {
    margin: 7px 0 0;
    text-align: center;
  }

  .hero {
    padding-top: 53px;
  }

  .hero-grid,
  .split-section,
  .product-hero-grid,
  .detail-grid,
  .article-layout,
  .about-grid,
  .contact-layout,
  .company-intro,
  .downloads-layout {
    grid-template-columns: 1fr;
  }

  .molecule-stage {
    max-width: 500px;
    margin: 0 auto;
  }

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

  .metric-grid div:nth-child(2) {
    border-right: 0;
  }

  .metric-grid div:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line);
  }

  .product-grid,
  .app-grid,
  .app-grid-full,
  .video-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .sticky-aside {
    position: static;
  }

  .contact-details {
    padding-right: 0;
    padding-bottom: 26px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

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

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

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

@media (max-width: 600px) {
  .container,
  .narrow {
    width: min(100% - 28px, 560px);
  }

  .hero {
    padding: 44px 0 48px;
  }

  .hero h1,
  .page-head h1,
  .product-hero h1 {
    font-size: 34px;
    letter-spacing: -0.7px;
  }

  .lead {
    font-size: 15.5px;
  }

  .element-row {
    gap: 5px;
  }

  .element-row span {
    width: 64px;
    min-height: 70px;
    padding: 8px;
  }

  .element-row b {
    font-size: 20px;
  }

  .element-row small {
    display: none;
  }

  .molecule-stage {
    padding-bottom: 54px;
  }

  .metrics-strip {
    margin-top: -16px;
  }

  .metric-grid div {
    padding: 18px;
  }

  .metric-grid strong {
    font-size: 22px;
  }

  .section {
    padding: 54px 0;
  }

  .product-grid,
  .app-grid,
  .app-grid-full,
  .knowledge-grid,
  .compact-grid,
  .video-grid,
  .form-grid,
  .footer-grid,
  .company-feature-grid {
    grid-template-columns: 1fr;
  }

  .contact-panel {
    padding: 20px;
  }

  .wechat-card,
  .wechat-card.compact {
    grid-template-columns: 102px minmax(0, 1fr);
    max-width: none;
  }

  .about-capability {
    grid-template-columns: 44px minmax(0, 1fr);
    padding: 18px;
  }

  .contact-panel h2 {
    font-size: 27px;
  }

  .form-foot,
  .article-cta {
    align-items: stretch;
    flex-direction: column;
  }

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

  .document-card {
    grid-template-columns: 1fr;
  }

  .document-card-actions {
    justify-content: flex-start;
  }

  table {
    min-width: 620px;
  }

  .table-wrap {
    border-radius: 9px;
  }
}