:root {
  --ink: #0b1f37;
  --ink-soft: #32465d;
  --muted: #66778d;
  --line: #dde5ee;
  --paper: #ffffff;
  --wash: #f5f8fb;
  --deep: #071727;
  --orange: #ff5a18;
  --orange-dark: #d94810;
  --teal: #00a6a6;
  --blue: #1e6fd9;
  --shadow: 0 16px 46px rgba(9, 31, 55, 0.12);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

body.nav-open {
  overflow: hidden;
}

img,
svg {
  display: block;
}

img {
  max-width: 100%;
  height: auto;
}

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

button {
  font: inherit;
}

.container {
  width: calc(100% - 40px);
  max-width: 1180px;
  margin: 0 auto;
}

.site-header {
  position: fixed;
  top: 18px;
  left: 50%;
  z-index: 50;
  width: calc(100% - 40px);
  max-width: 1180px;
  min-height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 10px 16px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(220, 229, 238, 0.9);
  border-radius: 8px;
  box-shadow: 0 18px 50px rgba(15, 31, 52, 0.14);
  backdrop-filter: blur(16px);
  transform: translateX(-50%);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 180px;
}

.brand-mark {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  color: #fff;
  background: linear-gradient(135deg, var(--orange), var(--teal));
  border-radius: 8px;
  font-weight: 800;
  line-height: 1;
}

.brand-text {
  display: grid;
  gap: 0;
}

.brand-text strong {
  font-size: 18px;
  line-height: 1.25;
}

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

.site-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 4px;
}

.site-nav a {
  padding: 10px 14px;
  color: var(--ink-soft);
  border-radius: 8px;
  font-size: 15px;
  white-space: nowrap;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--orange);
  background: #fff4ef;
  outline: none;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  gap: 5px;
  flex-direction: column;
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.nav-toggle span {
  width: 18px;
  height: 2px;
  background: currentColor;
  border-radius: 999px;
}

.hero {
  position: relative;
  min-height: 760px;
  padding: 148px 0 64px;
  overflow: hidden;
  color: #fff;
  background: var(--deep);
}

.hero-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  background:
    linear-gradient(90deg, rgba(7, 23, 39, 0.96) 0%, rgba(7, 23, 39, 0.9) 38%, rgba(7, 23, 39, 0.72) 62%, rgba(7, 23, 39, 0.58) 100%),
    radial-gradient(circle at 78% 34%, rgba(255, 90, 24, 0.16), transparent 34%),
    radial-gradient(circle at 74% 72%, rgba(0, 166, 166, 0.16), transparent 30%),
    linear-gradient(180deg, rgba(7, 23, 39, 0.36), rgba(7, 23, 39, 0.82)),
    url("../img/hero-workbench.webp") center / cover no-repeat;
  filter: saturate(0.76) contrast(0.9);
  transform: scale(1.015);
  transform-origin: center;
}

.hero-bg::before,
.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-bg::before {
  background:
    linear-gradient(90deg, rgba(7, 23, 39, 0.56) 0%, rgba(7, 23, 39, 0.24) 48%, rgba(7, 23, 39, 0.72) 100%),
    linear-gradient(180deg, rgba(7, 23, 39, 0.18), rgba(7, 23, 39, 0.78));
}

.hero-bg::after {
  background:
    radial-gradient(ellipse at center, transparent 0%, rgba(7, 23, 39, 0.08) 42%, rgba(7, 23, 39, 0.72) 100%),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.035) 0 1px, transparent 1px 22px);
  opacity: 0.72;
}

.hero-inner {
  position: relative;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 14px;
  color: var(--orange);
  font-weight: 800;
  font-size: 14px;
}

.eyebrow span {
  width: 8px;
  height: 8px;
  background: currentColor;
  border-radius: 50%;
}

.hero h1 {
  max-width: 820px;
  margin: 0;
  font-size: 54px;
  line-height: 1.14;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

.hero-copy {
  max-width: 680px;
  margin: 22px 0 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: 19px;
  overflow-wrap: anywhere;
}

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

.hero-assurance {
  display: flex;
  flex-wrap: wrap;
  max-width: 760px;
  gap: 10px 20px;
  margin: 28px 0 0;
  padding: 0;
  color: rgba(255, 255, 255, 0.86);
  list-style: none;
  font-size: 15px;
  font-weight: 800;
}

.hero-assurance li {
  position: relative;
  min-width: 0;
  padding-left: 17px;
}

.hero-assurance li::before {
  content: "";
  position: absolute;
  top: 0.72em;
  left: 0;
  width: 7px;
  height: 7px;
  background: var(--teal);
  border-radius: 50%;
  box-shadow: 0 0 0 5px rgba(0, 166, 166, 0.18);
}

.btn {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 11px 18px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 800;
}

.btn svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.btn-primary {
  color: #fff;
  background: var(--orange);
  box-shadow: 0 14px 34px rgba(255, 90, 24, 0.32);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--orange-dark);
  outline: none;
}

.btn-ghost {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.42);
  background: rgba(255, 255, 255, 0.08);
}

.btn-ghost:hover,
.btn-ghost:focus-visible {
  border-color: #fff;
  background: rgba(255, 255, 255, 0.16);
  outline: none;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  width: 100%;
  max-width: 900px;
  margin: 54px 0 0;
  padding: 22px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.93);
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.hero-stats div {
  min-width: 0;
  padding: 6px 22px;
  border-right: 1px solid var(--line);
}

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

.hero-stats dt {
  margin: 0;
  color: var(--ink);
  font-size: 34px;
  font-weight: 900;
  line-height: 1.15;
}

.hero-stats dd {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.section {
  padding: 92px 0;
}

.section-tight {
  padding: 46px 0;
  background: var(--paper);
}

.section-heading {
  max-width: 720px;
}

.section-heading.centered {
  margin: 0 auto 36px;
  text-align: center;
}

.section-heading h2,
.contact-section h2 {
  margin: 0;
  color: var(--ink);
  font-size: 36px;
  line-height: 1.22;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

.section-heading p:not(.eyebrow),
.contact-section p {
  margin: 16px 0 0;
  color: var(--muted);
}

.intro-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 56px;
  align-items: center;
}

.intro-grid > p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 18px;
}

.service-band,
.article-band {
  background: var(--wash);
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.service-card,
.case-card,
.article-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 10px 28px rgba(10, 36, 62, 0.06);
}

.service-card {
  min-height: 292px;
  padding: 26px 22px;
}

.service-card svg {
  width: 42px;
  height: 42px;
  margin-bottom: 22px;
  color: var(--orange);
  fill: currentColor;
}

.service-card h3,
.case-card h3,
.article-card h3,
.process-list h3 {
  margin: 0;
  color: var(--ink);
  font-size: 20px;
  line-height: 1.35;
}

.service-card p,
.case-card p,
.article-card p,
.process-list p {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 15px;
}

.split-section {
  background: #fff;
}

.split-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 58px;
  align-items: center;
}

.media-panel {
  overflow: hidden;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.media-panel img {
  width: 100%;
  aspect-ratio: 1.45 / 1;
  object-fit: cover;
}

.check-list {
  display: grid;
  gap: 12px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 28px;
  color: var(--ink-soft);
}

.check-list li::before {
  content: "";
  position: absolute;
  top: 0.72em;
  left: 0;
  width: 14px;
  height: 8px;
  border-left: 3px solid var(--teal);
  border-bottom: 3px solid var(--teal);
  transform: rotate(-45deg);
}

.process-band {
  color: #fff;
  background:
    linear-gradient(120deg, rgba(7, 23, 39, 0.95), rgba(11, 44, 68, 0.94)),
    url("../img/devices-grid.webp") center / cover no-repeat;
}

.process-band .section-heading h2,
.process-band .process-list h3 {
  color: #fff;
}

.process-band .section-heading p:not(.eyebrow),
.process-list p {
  color: rgba(255, 255, 255, 0.74);
}

.process-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.14);
}

.process-list li {
  min-height: 250px;
  padding: 28px;
  background: rgba(255, 255, 255, 0.08);
}

.process-list span {
  display: inline-flex;
  margin-bottom: 32px;
  color: var(--orange);
  font-size: 15px;
  font-weight: 900;
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.case-card {
  min-height: 245px;
  padding: 26px;
}

.case-tag {
  display: inline-flex;
  margin: 0 0 16px;
  padding: 5px 10px;
  color: var(--orange);
  background: #fff4ef;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 800;
}

.article-heading {
  display: flex;
  max-width: none;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 32px;
}

.text-link {
  color: var(--orange);
  font-weight: 800;
}

.text-link:hover,
.text-link:focus-visible {
  color: var(--orange-dark);
  outline: none;
}

.article-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.article-card {
  overflow: hidden;
}

.article-card a {
  position: relative;
  display: block;
}

.article-card a::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1;
  height: 0;
  padding-top: 56.25%;
  background:
    linear-gradient(180deg, rgba(7, 23, 39, 0.12), rgba(7, 23, 39, 0.32)),
    radial-gradient(circle at 70% 30%, rgba(0, 166, 166, 0.14), transparent 36%);
  pointer-events: none;
}

.article-card img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  filter: saturate(0.82) contrast(0.92);
}

.article-card-body {
  position: relative;
  z-index: 2;
  padding: 20px;
}

.article-meta {
  margin: 0 0 9px;
  color: var(--teal);
  font-size: 13px;
  font-weight: 800;
}

.article-card h3 {
  font-size: 19px;
}

.faq-band {
  background: #fff;
}

.faq-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 58px;
}

.faq-list {
  display: grid;
  gap: 12px;
}

.faq-list details {
  background: var(--wash);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.faq-list summary {
  cursor: pointer;
  padding: 18px 20px;
  color: var(--ink);
  font-weight: 800;
}

.faq-list p {
  margin: 0;
  padding: 0 20px 18px;
  color: var(--muted);
}

.contact-section {
  padding: 86px 0;
  color: #fff;
  background: linear-gradient(135deg, var(--deep), #0e3b51 72%, #0a5f60);
}

.contact-section h2,
.contact-section .eyebrow {
  color: #fff;
}

.contact-section .eyebrow span {
  background: var(--orange);
}

.contact-section p {
  color: rgba(255, 255, 255, 0.76);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 56px;
  align-items: center;
}

.contact-card {
  padding: 22px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
}

.contact-row {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 16px 0;
  color: #fff;
  background: transparent;
  border: 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.17);
  text-align: left;
}

.contact-row span {
  color: rgba(255, 255, 255, 0.66);
}

.contact-row strong {
  font-size: 22px;
}

.contact-copy {
  cursor: pointer;
}

.address {
  margin-top: 18px;
  font-size: 14px;
}

.site-footer {
  padding: 24px 0;
  color: #9eb0c4;
  background: var(--deep);
}

.footer-grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.footer-grid p {
  margin: 0;
}

.footer-grid a {
  color: #fff;
  font-weight: 700;
}

.article-hero {
  padding: 154px 0 72px;
  color: #fff;
  background:
    linear-gradient(115deg, rgba(7, 23, 39, 0.96), rgba(13, 70, 82, 0.86)),
    url("../img/devices-grid.webp") center / cover no-repeat;
}

.article-hero h1 {
  max-width: 820px;
  margin: 0;
  font-size: 44px;
  line-height: 1.18;
  letter-spacing: 0;
}

.article-hero p:not(.eyebrow) {
  max-width: 700px;
  margin: 18px 0 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: 18px;
}

.article-detail {
  padding: 154px 0 84px;
  background: #fff;
}

.article-detail-inner {
  max-width: 900px;
}

.back-link {
  display: inline-flex;
  margin-bottom: 26px;
}

.article-detail h1 {
  margin: 0;
  color: var(--ink);
  font-size: 42px;
  line-height: 1.2;
  letter-spacing: 0;
}

.article-lead {
  margin: 18px 0 0;
  color: var(--ink-soft);
  font-size: 19px;
}

.article-cover {
  width: 100%;
  margin-top: 34px;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.article-content {
  max-width: 760px;
  margin: 38px auto 0;
  color: var(--ink-soft);
  font-size: 18px;
}

.article-content p {
  margin: 0 0 22px;
}

@media (max-width: 980px) {
  .site-header {
    top: 12px;
    width: calc(100% - 24px);
    max-width: 720px;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 10px;
    background: rgba(255, 255, 255, 0.96);
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: var(--shadow);
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    padding: 12px 14px;
  }

  .hero {
    min-height: 700px;
    padding-top: 126px;
  }

  .hero h1 {
    max-width: 620px;
    font-size: 44px;
  }

  .hero-copy {
    font-size: 18px;
  }

  .hero-stats,
  .service-grid,
  .process-list,
  .case-grid,
  .article-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-stats div:nth-child(2) {
    border-right: 0;
  }

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

  .intro-grid,
  .split-grid,
  .faq-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .contact-grid {
    gap: 34px;
  }
}

@media (max-width: 640px) {
  .container {
    width: calc(100% - 28px);
    max-width: 362px;
  }

  .site-header {
    min-height: 62px;
    padding: 8px 10px;
    max-width: 362px;
  }

  .brand {
    min-width: 0;
  }

  .brand-mark {
    width: 42px;
    height: 42px;
    font-size: 14px;
  }

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

  .brand-text small {
    display: none;
  }

  .hero {
    min-height: 760px;
    padding: 116px 0 36px;
  }

  .hero-bg {
    background:
      linear-gradient(180deg, rgba(7, 23, 39, 0.96) 0%, rgba(7, 23, 39, 0.88) 48%, rgba(7, 23, 39, 0.94) 100%),
      radial-gradient(circle at 70% 28%, rgba(255, 90, 24, 0.12), transparent 36%),
      url("../img/hero-workbench.webp") center / cover no-repeat;
    filter: saturate(0.62) contrast(0.84);
  }

  .hero h1 {
    font-size: 34px;
    word-break: break-all;
  }

  .hero-copy {
    font-size: 16px;
    word-break: break-all;
  }

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

  .hero-assurance {
    display: grid;
    gap: 9px;
    margin-top: 24px;
    font-size: 14px;
  }

  .btn {
    width: 100%;
  }

  .hero-stats,
  .service-grid,
  .process-list,
  .case-grid,
  .article-grid {
    grid-template-columns: 1fr;
  }

  .hero-stats {
    margin-top: 42px;
    padding: 8px 18px;
  }

  .hero-stats div {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
    gap: 14px;
    padding: 14px 0;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

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

.hero-stats dt {
    font-size: 26px;
    white-space: nowrap;
  }

  .hero-stats dd {
    min-width: 0;
    margin-top: 0;
    text-align: right;
    overflow-wrap: anywhere;
    word-break: break-all;
  }

  .section {
    padding: 66px 0;
  }

  .section-tight {
    padding: 34px 0;
  }

  .section-heading h2,
  .contact-section h2 {
    font-size: 28px;
    word-break: break-all;
  }

  .section-heading.centered {
    text-align: left;
  }

  .service-card,
  .case-card {
    min-height: auto;
  }

  .process-list li {
    min-height: auto;
    padding: 24px;
  }

  .process-list span {
    margin-bottom: 18px;
  }

  .article-heading {
    display: grid;
    gap: 14px;
  }

  .contact-row {
    display: grid;
    gap: 2px;
  }

  .contact-row strong {
    font-size: 20px;
  }

  .article-hero {
    padding: 126px 0 58px;
  }

  .article-hero h1,
  .article-detail h1 {
    font-size: 32px;
  }

  .article-detail {
    padding: 126px 0 62px;
  }

  .footer-grid {
    display: grid;
  }
}

@media (max-width: 520px) {
  .container {
    margin-left: 14px;
    margin-right: 14px;
  }

  .site-header {
    left: 14px;
    transform: none;
  }
}