:root {
  color-scheme: light;
  --brand: #1f4d9c;
  --brand-strong: #173f86;
  --navy: #061635;
  --ink: #152033;
  --muted: #66758c;
  --soft: #f4f8fc;
  --soft-blue: #eaf4ff;
  --line: #d7e2ef;
  --white: #ffffff;
  --cyan: #10a8d7;
  --green: #16845b;
  --teal: #147b8d;
  --amber: #b48a05;
  --shadow-soft: 0 18px 48px rgba(10, 36, 84, 0.12);
  --shadow-card: 0 24px 70px rgba(10, 36, 84, 0.16);
  --container: 1180px;
  font-family:
    "Inter", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", Arial,
    sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  letter-spacing: 0;
}

body.nav-open {
  overflow: hidden;
}

section[id] {
  scroll-margin-top: 92px;
}

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

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

.section-inner,
.header-inner,
.hero-inner {
  width: min(var(--container), calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  min-height: 76px;
  padding: 0;
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid rgba(215, 226, 239, 0.85);
  backdrop-filter: blur(18px);
  transition:
    min-height 180ms ease,
    box-shadow 180ms ease;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-header.is-scrolled {
  min-height: 64px;
  box-shadow: 0 14px 36px rgba(10, 36, 84, 0.08);
}

.brand {
  display: inline-flex;
  align-items: center;
  width: 188px;
}

.brand img {
  width: 100%;
  height: auto;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(20px, 3vw, 38px);
  color: var(--navy);
  font-size: 0.94rem;
  font-weight: 760;
}

.site-nav a {
  position: relative;
  padding: 28px 0;
}

.site-nav a::after {
  position: absolute;
  right: 0;
  bottom: 20px;
  left: 0;
  height: 3px;
  content: "";
  background: var(--brand);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 180ms ease;
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
  transform: scaleX(1);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.nav-toggle span {
  display: block;
  width: 19px;
  height: 2px;
  margin: 5px auto;
  background: var(--brand-strong);
  transition:
    opacity 180ms ease,
    transform 180ms ease;
}

.nav-open .nav-toggle span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-open .nav-toggle span:nth-child(2) {
  opacity: 0;
}

.nav-open .nav-toggle span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.hero {
  position: relative;
  min-height: calc(82svh - 76px);
  display: grid;
  align-items: center;
  padding: clamp(58px, 7vw, 86px) 0;
  overflow: hidden;
  color: var(--white);
  background:
    linear-gradient(90deg, rgba(3, 13, 35, 0.88) 0%, rgba(5, 28, 78, 0.75) 42%, rgba(5, 28, 78, 0.12) 100%),
    linear-gradient(180deg, rgba(3, 13, 35, 0.15), rgba(3, 13, 35, 0.72)),
    url("../assets/generated-hero.jpg") center / cover no-repeat;
}

.hero::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 1px;
  content: "";
  background: rgba(255, 255, 255, 0.22);
}

.hero-inner {
  position: relative;
  z-index: 1;
}

.eyebrow,
.section-kicker {
  margin: 0 0 14px;
  color: var(--cyan);
  font-size: 0.78rem;
  font-weight: 900;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 780px;
  margin: 0;
  font-size: clamp(3.25rem, 7vw, 6.5rem);
  font-style: italic;
  font-weight: 950;
  line-height: 0.94;
  text-shadow: 0 14px 36px rgba(0, 0, 0, 0.28);
}

.hero h1 span {
  display: block;
}

.hero-title-cn {
  font-size: 0.72em;
}

.hero-lead {
  max-width: 720px;
  margin: 24px 0 0;
  font-size: clamp(1.18rem, 2vw, 1.68rem);
  font-weight: 800;
  line-height: 1.55;
}

.hero-actions,
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  color: inherit;
  font-size: 0.96rem;
  font-weight: 850;
  white-space: nowrap;
  border: 1px solid transparent;
  border-radius: 6px;
  transition:
    border-color 180ms ease,
    transform 180ms ease,
    background 180ms ease;
}

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

.btn-primary {
  color: var(--white);
  background: var(--brand);
  box-shadow: 0 16px 36px rgba(6, 72, 255, 0.3);
}

.btn-secondary {
  color: var(--brand-strong);
  background: var(--white);
  border-color: var(--line);
}

.btn-ghost {
  color: var(--white);
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.4);
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  max-width: 640px;
  margin-top: 30px;
}

.hero-tags span {
  padding: 9px 12px;
  color: rgba(255, 255, 255, 0.92);
  font-size: 0.9rem;
  font-weight: 760;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 999px;
}

.hero-proof {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  max-width: 680px;
  margin-top: 28px;
  overflow: hidden;
  color: var(--white);
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 8px;
  backdrop-filter: blur(12px);
}

.hero-proof div {
  min-height: 74px;
  padding: 16px 18px;
  border-right: 1px solid rgba(255, 255, 255, 0.18);
}

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

.hero-proof strong {
  display: block;
  color: var(--white);
  font-size: clamp(1.45rem, 3vw, 2rem);
  font-weight: 950;
  line-height: 1;
}

.hero-proof span {
  display: block;
  margin-top: 7px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.86rem;
  font-weight: 760;
}

.positioning,
.solutions,
.industries,
.advantages,
.workflow,
.contact {
  padding: clamp(72px, 9vw, 116px) 0;
}

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

.positioning-layout,
.workflow-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(36px, 7vw, 88px);
  align-items: center;
}

.positioning h2,
.section-heading h2,
.industries h2,
.advantages h2,
.workflow h2,
.contact h2 {
  margin: 0;
  color: var(--navy);
  font-size: clamp(1.9rem, 3.8vw, 3rem);
  line-height: 1.12;
}

.positioning-copy {
  padding: 30px;
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.positioning-copy p,
.section-heading p,
.industries-copy p,
.contact-copy p {
  margin: 0;
  color: var(--muted);
  font-size: clamp(1rem, 1.5vw, 1.12rem);
  line-height: 1.86;
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(300px, 0.7fr);
  gap: clamp(26px, 5vw, 70px);
  align-items: end;
  margin-bottom: clamp(34px, 6vw, 58px);
}

.section-heading .section-kicker {
  grid-column: 1 / -1;
  margin-bottom: -10px;
}

.section-heading.centered {
  display: block;
  max-width: 760px;
  margin-right: auto;
  margin-left: auto;
  text-align: center;
}

.section-heading.centered p:last-child {
  margin-top: 18px;
}

.solution-grid {
  display: grid;
  gap: 24px;
}

.solution-card {
  --accent: var(--brand);
  display: grid;
  grid-template-columns: minmax(320px, 0.86fr) minmax(0, 1fr);
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow-soft);
}

.solution-card:nth-child(even) {
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.86fr);
}

.solution-card:nth-child(even) .solution-media {
  order: 2;
}

.accent-green {
  --accent: var(--green);
}

.accent-teal {
  --accent: var(--teal);
}

.accent-amber {
  --accent: var(--amber);
}

.solution-media {
  position: relative;
  min-height: 390px;
  margin: 0;
  overflow: hidden;
}

.solution-media::after {
  position: absolute;
  inset: 0;
  content: "";
  background:
    linear-gradient(180deg, rgba(6, 22, 53, 0) 50%, rgba(6, 22, 53, 0.68) 100%),
    linear-gradient(90deg, rgba(6, 72, 255, 0.12), rgba(6, 72, 255, 0));
}

.solution-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.solution-media figcaption {
  position: absolute;
  right: 20px;
  bottom: 18px;
  z-index: 1;
  color: rgba(255, 255, 255, 0.88);
  font-size: 0.78rem;
  font-weight: 900;
  text-transform: uppercase;
}

.solution-body {
  position: relative;
  padding: clamp(28px, 5vw, 56px);
}

.solution-body::before {
  position: absolute;
  top: 0;
  left: 0;
  width: 5px;
  height: 100%;
  content: "";
  background: var(--accent);
}

.solution-card:nth-child(even) .solution-body::before {
  right: 0;
  left: auto;
}

.solution-body h3 {
  max-width: 660px;
  margin: 0;
  color: var(--navy);
  font-size: clamp(1.65rem, 3vw, 2.45rem);
  line-height: 1.16;
}

.solution-body p {
  max-width: 660px;
  margin: 18px 0 0;
  color: var(--muted);
  line-height: 1.75;
}

.solution-focus {
  display: grid;
  grid-template-columns: 82px minmax(0, 1fr);
  gap: 16px;
  align-items: baseline;
  max-width: 660px;
  padding: 16px 0;
  margin-top: 22px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.solution-focus span {
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 900;
}

.solution-focus strong {
  color: var(--navy);
  font-size: 0.98rem;
  line-height: 1.55;
}

.product-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 0;
  margin: 24px 0 0;
  list-style: none;
}

.product-list li {
  max-width: 100%;
  padding: 9px 12px;
  color: var(--navy);
  font-size: 0.9rem;
  font-weight: 760;
  line-height: 1.4;
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.product-note {
  max-width: 920px;
  padding: 16px 18px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.7;
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.industries {
  background: linear-gradient(180deg, var(--soft) 0%, var(--white) 100%);
}

.industries-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.82fr);
  gap: clamp(34px, 6vw, 82px);
  align-items: center;
}

.industries-media {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow-card);
}

.industries-media img {
  width: 100%;
  min-height: 430px;
  object-fit: cover;
}

.scenario-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 28px;
}

.scenario-grid span {
  padding: 14px 16px;
  color: var(--navy);
  font-weight: 850;
  background: var(--white);
  border: 1px solid var(--line);
  border-left: 4px solid var(--brand);
  border-radius: 8px;
  box-shadow: 0 12px 30px rgba(10, 36, 84, 0.07);
}

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

.advantage-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 16px;
  margin-top: 36px;
}

.advantage-grid article {
  min-height: 228px;
  padding: 24px;
  background: linear-gradient(180deg, var(--white), var(--soft));
  border: 1px solid var(--line);
  border-radius: 8px;
}

.advantage-grid span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  color: var(--white);
  font-weight: 950;
  background: var(--brand);
  border-radius: 6px;
}

.advantage-grid article:nth-child(2) span {
  background: var(--green);
}

.advantage-grid article:nth-child(3) span {
  background: var(--cyan);
}

.advantage-grid article:nth-child(4) span {
  background: var(--amber);
}

.advantage-grid article:nth-child(5) span {
  background: var(--teal);
}

.advantage-grid h3 {
  margin: 26px 0 10px;
  color: var(--navy);
  font-size: 1.18rem;
}

.advantage-grid p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.72;
}

.workflow {
  background: var(--navy);
}

.workflow h2 {
  color: var(--white);
}

.workflow-steps {
  display: grid;
  gap: 14px;
  padding: 0;
  margin: 0;
  list-style: none;
  counter-reset: step;
}

.workflow-steps li {
  position: relative;
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 22px;
  padding: 22px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
}

.workflow-steps li::before {
  counter-increment: step;
  content: "0" counter(step);
  color: var(--cyan);
  font-size: 1.7rem;
  font-style: italic;
  font-weight: 950;
}

.workflow-steps strong {
  color: var(--white);
  font-size: 1.08rem;
}

.workflow-steps span {
  grid-column: 2;
  color: rgba(255, 255, 255, 0.72);
  line-height: 1.68;
}

.contact {
  background:
    linear-gradient(135deg, rgba(234, 244, 255, 0.95), rgba(255, 255, 255, 1) 62%),
    var(--soft);
  padding: clamp(40px, 6vw, 64px) 0;
}

.contact-card {
  display: grid;
  grid-template-columns: minmax(300px, 0.85fr) minmax(440px, 1.15fr);
  gap: clamp(22px, 4vw, 48px);
  align-items: center;
  padding: clamp(24px, 4vw, 34px);
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow-soft);
}

.contact h2 {
  font-size: clamp(1.75rem, 3vw, 2.55rem);
}

.contact-heading p:last-child {
  margin: 16px 0 0;
  color: var(--muted);
  line-height: 1.76;
}

.contact-channels {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.qr-card {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 14px;
  align-items: center;
  padding: 14px;
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.qr-card img {
  width: 96px;
  height: 96px;
  object-fit: contain;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.qr-card span {
  display: block;
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 760;
}

.qr-card a {
  display: inline-flex;
  margin-top: 8px;
  color: var(--brand);
  font-size: 1.05rem;
  font-weight: 900;
}

.site-footer {
  padding: 26px 0;
  color: var(--muted);
  background: var(--white);
  border-top: 1px solid var(--line);
}

.footer-inner {
  display: block;
  font-size: 0.92rem;
  font-weight: 760;
}

.footer-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px 18px;
}

.footer-meta a {
  color: var(--brand);
}

@media (max-width: 1080px) {
  .section-heading,
  .positioning-layout,
  .industries-layout,
  .workflow-layout {
    grid-template-columns: 1fr;
  }

  .solution-card,
  .solution-card:nth-child(even) {
    grid-template-columns: 1fr;
  }

  .solution-card:nth-child(even) .solution-media {
    order: 0;
  }

  .solution-card:nth-child(even) .solution-body::before {
    right: auto;
    left: 0;
  }

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

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

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

@media (max-width: 760px) {
  .site-header {
    min-height: 68px;
    padding: 0;
  }

  .site-header.is-scrolled {
    min-height: 64px;
  }

  .brand {
    width: 142px;
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: fixed;
    top: 68px;
    right: 0;
    left: 0;
    display: grid;
    gap: 0;
    padding: 8px 18px 18px;
    background: rgba(255, 255, 255, 0.98);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 18px 45px rgba(10, 36, 84, 0.12);
    transform: translateY(-120%);
    transition: transform 180ms ease;
  }

  .nav-open .site-nav {
    transform: translateY(0);
  }

  .site-nav a {
    padding: 16px 0;
    border-bottom: 1px solid var(--line);
  }

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

  .site-nav a::after {
    display: none;
  }

  .section-inner,
  .header-inner,
  .hero-inner {
    width: min(100% - 28px, var(--container));
  }

  .hero {
    min-height: auto;
    padding-top: 64px;
    background:
      linear-gradient(180deg, rgba(3, 13, 35, 0.12), rgba(3, 13, 35, 0.88)),
      url("../assets/generated-hero.jpg") center / cover no-repeat;
  }

  .hero-inner {
    padding-bottom: 0;
  }

  .hero h1 {
    font-size: clamp(2.55rem, 14vw, 4rem);
  }

  .hero-lead {
    max-width: 350px;
    font-size: 1.04rem;
  }

  .hero-actions,
  .contact-actions {
    display: grid;
    grid-template-columns: 1fr;
    margin-top: 24px;
  }

  .hero-tags {
    gap: 8px;
    margin-top: 22px;
  }

  .hero-tags span {
    font-size: 0.84rem;
  }

  .hero-proof {
    grid-template-columns: 1fr;
    border-radius: 8px;
  }

  .hero-proof div {
    min-height: auto;
    padding: 14px 16px;
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.18);
  }

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

  .positioning,
  .solutions,
  .industries,
  .advantages,
  .workflow,
  .contact {
    padding: 76px 0;
  }

  .positioning-copy {
    padding: 22px;
  }

  .section-heading .section-kicker {
    margin-bottom: 0;
  }

  .solution-media {
    min-height: 260px;
  }

  .solution-body {
    padding: 28px 22px 30px;
  }

  .solution-focus {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .product-list li {
    flex: 1 1 100%;
  }

  .product-note {
    font-size: 0.88rem;
  }

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

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

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

  .advantage-grid article {
    min-height: auto;
  }

  .workflow-steps li {
    grid-template-columns: 68px minmax(0, 1fr);
    gap: 14px;
    padding: 18px;
  }

  .workflow-steps span {
    grid-column: 1 / -1;
  }

  .contact {
    padding: 44px 0;
  }

  .contact-card {
    padding: 22px;
  }

  .contact-channels {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .qr-card {
    grid-template-columns: 86px minmax(0, 1fr);
  }

  .qr-card img {
    width: 86px;
    height: 86px;
  }

  .footer-inner {
    display: grid;
    justify-items: start;
  }

  .footer-meta {
    justify-content: flex-start;
  }
}

@media (max-width: 390px) {
  .btn {
    min-height: 46px;
    padding: 0 14px;
    font-size: 0.92rem;
  }
}