:root {
  --cyan: #10bfe8;
  --blue: #1675bc;
  --navy: #0d3357;
  --deep: #071f38;
  --ink: #2f3439;
  --muted: #6d747c;
  --line: #e5edf2;
  --gold: #b9903b;
  --soft: #f7fafc;
  --white: #fff;
  --shadow: 0 24px 70px rgba(7, 31, 56, 0.12);
  --container: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: clip;
  color: var(--ink);
  background: var(--white);
  font-family: Arial, "Hiragino Sans", "Yu Gothic", "Microsoft YaHei", sans-serif;
  letter-spacing: 0;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  height: 92px;
  padding: 0 max(28px, calc((100vw - var(--container)) / 2));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 34px;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid rgba(229, 237, 242, 0);
  transition: border-color 220ms ease, box-shadow 220ms ease;
}

.site-header.is-scrolled {
  border-bottom-color: var(--line);
  box-shadow: 0 10px 28px rgba(7, 31, 56, 0.06);
}

.brand {
  display: flex;
  align-items: center;
  gap: 13px;
  min-width: 0;
}

.brand img {
  width: 54px;
  height: 54px;
  object-fit: contain;
}

.brand span {
  display: grid;
  gap: 2px;
}

.brand strong {
  color: #30353a;
  font-size: 25px;
  line-height: 1;
  font-weight: 800;
}

.brand em {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.2;
  font-style: normal;
  font-weight: 700;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 30px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 800;
}

.site-nav a {
  position: relative;
  padding: 8px 0;
}

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

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

.language-switch {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-left: 2px;
}

.language-switch a {
  min-height: 30px;
  padding: 0 10px;
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
  line-height: 1;
  font-weight: 800;
}

.language-switch a::after {
  display: none;
}

.language-switch a.is-active {
  color: var(--white);
  border-color: var(--navy);
  background: var(--navy);
}

.menu-button {
  display: none;
  width: 42px;
  height: 42px;
  border: 0;
  background: transparent;
  color: var(--deep);
  padding: 9px;
}

.menu-button span {
  display: block;
  width: 24px;
  height: 2px;
  margin: 5px 0;
  background: currentColor;
}

.hero {
  position: relative;
  height: min(700px, calc(100vh - 92px));
  min-height: 560px;
  overflow: hidden;
  background: #e8f4f7;
}

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

.hero-word {
  position: absolute;
  left: 50%;
  top: 42%;
  transform: translate(-50%, -50%);
  width: min(980px, 86vw);
  text-align: center;
  pointer-events: none;
}

.hero-word span,
.hero-word strong {
  display: block;
  color: transparent;
  -webkit-text-stroke: 2px rgba(255, 255, 255, 0.94);
  text-shadow: 0 8px 28px rgba(18, 63, 104, 0.16);
  font-weight: 900;
  line-height: 0.92;
}

.hero-word span {
  font-size: clamp(58px, 7.6vw, 106px);
}

.hero-word strong {
  margin-top: 14px;
  font-size: clamp(44px, 5.3vw, 76px);
}

.section {
  max-width: var(--container);
  margin: 0 auto;
  padding: 96px 28px;
}

.section-band {
  padding: 96px 28px 106px;
  background: var(--soft);
}

.section-label {
  position: relative;
  margin: 0 0 46px;
  color: #3d4147;
  font-size: 24px;
  font-weight: 700;
  text-align: center;
}

.section-label::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -22px;
  width: 38px;
  height: 2px;
  transform: translateX(-50%);
  background: var(--cyan);
}

.vision {
  text-align: center;
}

.vision h1,
.section-heading h2,
.products h2,
.company h2,
.contact h2 {
  margin: 0;
  color: #4a5159;
  font-weight: 700;
}

.vision h1 {
  font-size: clamp(30px, 3.2vw, 42px);
  line-height: 1.55;
}

.lead {
  max-width: 780px;
  margin: 30px auto 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 2.05;
}

.strengths {
  max-width: var(--container);
  margin: 0 auto;
  padding: 28px 28px 106px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 48px;
}

.strengths article {
  text-align: center;
}

.icon-circle {
  width: 116px;
  height: 116px;
  margin: 0 auto 28px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--white);
  background: var(--cyan);
  box-shadow: 0 14px 34px rgba(16, 191, 232, 0.24);
  font-size: 28px;
  font-weight: 900;
}

.strengths h2 {
  margin: 0 0 18px;
  color: #474d53;
  font-size: 23px;
  line-height: 1.45;
}

.strengths p,
.section-copy,
.company p,
.flow-list span {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.9;
}

.section-heading {
  max-width: var(--container);
  margin: 0 auto 56px;
  text-align: center;
}

.section-heading h2,
.products h2,
.company h2,
.contact h2 {
  font-size: clamp(30px, 3.1vw, 40px);
  line-height: 1.35;
}

.service-list {
  max-width: var(--container);
  margin: 0 auto;
  display: grid;
  gap: 30px;
}

.service-list article {
  display: grid;
  grid-template-columns: minmax(280px, 370px) minmax(0, 1fr);
  align-items: center;
  gap: 48px;
  padding: 28px;
  background: var(--white);
  border: 1px solid var(--line);
  box-shadow: 0 18px 44px rgba(7, 31, 56, 0.05);
}

.service-list article:nth-child(even) {
  grid-template-columns: minmax(0, 1fr) minmax(280px, 370px);
}

.service-list article:nth-child(even) img {
  order: 2;
}

.service-list img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  transition: transform 600ms ease;
}

.service-list article:hover img {
  transform: scale(1.025);
}

.service-list span {
  display: inline-block;
  margin-bottom: 12px;
  color: var(--gold);
  font-size: 13px;
  font-weight: 900;
}

.service-list h3 {
  margin: 0 0 14px;
  color: var(--navy);
  font-size: 28px;
  line-height: 1.35;
}

.service-list p {
  margin: 0;
  color: #6f7780;
  font-size: 16px;
  line-height: 1.9;
}

.products {
  text-align: center;
}

.section-copy {
  max-width: 760px;
  margin: 24px auto 0;
}

.product-grid {
  margin-top: 42px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.product-grid span {
  min-height: 74px;
  display: grid;
  place-items: center;
  padding: 14px;
  color: var(--navy);
  background: var(--soft);
  border: 1px solid var(--line);
  font-weight: 800;
}

.flow-list {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 18px;
  counter-reset: flow;
}

.flow-list li {
  position: relative;
  min-height: 210px;
  padding: 30px 22px;
  background: var(--white);
  border: 1px solid var(--line);
}

.flow-list li::before {
  counter-increment: flow;
  content: "0" counter(flow);
  display: block;
  margin-bottom: 22px;
  color: var(--gold);
  font-weight: 900;
}

.flow-list strong {
  display: block;
  margin-bottom: 12px;
  color: var(--navy);
  font-size: 19px;
  line-height: 1.4;
}

.company {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 62px;
  align-items: start;
}

.company .section-label {
  text-align: left;
}

.company .section-label::after {
  left: 0;
  transform: none;
}

.company p {
  margin: 24px 0 0;
}

.company-list {
  margin: 0;
  border-top: 1px solid var(--line);
}

.company-list div {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  gap: 28px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.company-list dt {
  color: var(--navy);
  font-weight: 900;
}

.company-list dd {
  margin: 0;
  color: #6f7780;
  line-height: 1.75;
}

.contact {
  padding: 96px 28px;
  color: var(--white);
  background: var(--navy);
}

.contact-inner {
  max-width: var(--container);
  margin: 0 auto;
}

.contact .section-label,
.contact h2 {
  color: var(--white);
  text-align: left;
}

.contact .section-label::after {
  left: 0;
  transform: none;
  background: var(--gold);
}

.contact h2 {
  max-width: 760px;
}

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

.button {
  min-height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 24px;
  border: 1px solid rgba(255, 255, 255, 0.48);
  font-weight: 900;
}

.button-primary {
  color: var(--navy);
  background: var(--white);
}

.button-secondary {
  color: var(--white);
}

.contact-list {
  margin: 42px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 1px;
  list-style: none;
  background: rgba(255, 255, 255, 0.16);
}

.contact-list li {
  min-height: 92px;
  padding: 18px;
  background: rgba(7, 31, 56, 0.35);
  line-height: 1.55;
}

.contact-list span {
  display: block;
  margin-bottom: 6px;
  color: rgba(255, 255, 255, 0.68);
  font-size: 13px;
  font-weight: 800;
}

.contact-form {
  margin-top: 42px;
  padding: 28px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(7, 31, 56, 0.36);
}

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

.contact-form label {
  display: grid;
  gap: 8px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 13px;
  font-weight: 800;
}

.form-wide {
  grid-column: 1 / -1;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.26);
  border-radius: 0;
  padding: 13px 14px;
  color: var(--white);
  background: rgba(255, 255, 255, 0.08);
  font: inherit;
  font-size: 15px;
  font-weight: 600;
}

.contact-form select option {
  color: var(--ink);
}

.contact-form textarea {
  resize: vertical;
  min-height: 132px;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: 2px solid rgba(16, 191, 232, 0.72);
  outline-offset: 2px;
}

.contact-form .button {
  margin-top: 22px;
  cursor: pointer;
}

.form-note {
  margin: 14px 0 0;
  color: rgba(255, 255, 255, 0.66);
  font-size: 13px;
  line-height: 1.7;
}

.map-embed {
  margin-top: 34px;
  min-height: 210px;
  padding: 28px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.13), rgba(255, 255, 255, 0.03)),
    radial-gradient(circle at 80% 25%, rgba(16, 191, 232, 0.28), transparent 34%),
    rgba(255, 255, 255, 0.08);
}

.map-embed span {
  display: block;
  margin-bottom: 12px;
  color: var(--gold);
  font-size: 13px;
  font-weight: 900;
}

.map-embed strong {
  display: block;
  color: var(--white);
  font-size: clamp(24px, 2.5vw, 34px);
  line-height: 1.25;
}

.map-embed p {
  max-width: 560px;
  margin: 12px 0 0;
  color: rgba(255, 255, 255, 0.72);
  font-size: 15px;
  line-height: 1.8;
}

.site-footer {
  max-width: var(--container);
  margin: 0 auto;
  padding: 38px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  color: var(--muted);
  font-size: 14px;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--navy);
  font-weight: 900;
}

.footer-brand img {
  width: 40px;
  height: 40px;
  object-fit: contain;
}

.error-page {
  min-height: 100vh;
  padding: 72px 28px;
  display: grid;
  align-content: center;
  justify-items: center;
  text-align: center;
  color: var(--white);
  background: var(--navy);
}

.error-page .footer-brand {
  margin-bottom: 44px;
  color: var(--white);
}

.error-page .section-label {
  color: var(--white);
}

.error-page h1 {
  margin: 0;
  font-size: clamp(34px, 5vw, 56px);
  line-height: 1.2;
}

.error-page p:not(.section-label) {
  max-width: 520px;
  margin: 20px auto 0;
  color: rgba(255, 255, 255, 0.74);
  font-size: 16px;
  line-height: 1.8;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 520ms ease, transform 520ms ease;
}

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

@media (max-width: 920px) {
  .site-header {
    height: 78px;
    padding: 0 24px;
  }

  .brand img {
    width: 46px;
    height: 46px;
  }

  .brand strong {
    font-size: 21px;
  }

  .menu-button {
    display: block;
  }

  .site-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 78px;
    padding: 20px 28px 24px;
    display: grid;
    gap: 16px;
    background: var(--white);
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 220ms ease, opacity 220ms ease;
  }

  .language-switch {
    margin-top: 4px;
    margin-left: 0;
  }

  .language-switch a {
    width: fit-content;
  }

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

  .hero {
    height: auto;
    min-height: 0;
    aspect-ratio: 1672 / 941;
  }

  .hero img {
    object-fit: cover;
    object-position: center;
  }

  .hero-word {
    top: 50%;
    width: min(340px, calc(100vw - 40px));
  }

  .hero-word span {
    font-size: clamp(32px, 9vw, 42px);
    -webkit-text-stroke-width: 1.3px;
  }

  .hero-word strong {
    font-size: clamp(28px, 7.8vw, 36px);
    -webkit-text-stroke-width: 1.2px;
  }

  .section,
  .section-band,
  .contact {
    padding-left: 28px;
    padding-right: 28px;
  }

  .vision {
    padding-top: 72px;
    padding-bottom: 66px;
  }

  .vision h1 {
    font-size: 25px;
    line-height: 1.65;
  }

  .lead {
    max-width: 334px;
    margin-top: 30px;
    text-align: left;
    font-size: 15px;
    line-height: 1.95;
  }

  .strengths {
    padding: 20px 28px 76px;
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .strengths article,
  .service-list article,
  .products,
  .flow-list,
  .company,
  .contact-inner {
    max-width: 334px;
    margin-left: auto;
    margin-right: auto;
  }

  .strengths p {
    text-align: left;
  }

  .icon-circle {
    width: 96px;
    height: 96px;
    font-size: 24px;
  }

  .section-heading {
    margin-bottom: 38px;
  }

  .service-list article,
  .service-list article:nth-child(even) {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 18px;
  }

  .service-list article:nth-child(even) img {
    order: 0;
  }

  .service-list h3 {
    font-size: 23px;
  }

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

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

  .flow-list li {
    min-height: auto;
  }

  .company {
    grid-template-columns: 1fr;
    gap: 34px;
  }

  .company-list div {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .contact h2 {
    font-size: 28px;
  }

  .contact-actions {
    display: grid;
  }

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

  .contact-form {
    padding: 20px;
  }

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

  .map-embed {
    align-items: flex-start;
    flex-direction: column;
  }

  .site-footer {
    display: grid;
    justify-items: center;
    text-align: center;
  }
}

@media (max-width: 420px) {
  .site-header,
  .section,
  .section-band,
  .contact,
  .strengths {
    padding-left: 24px;
    padding-right: 24px;
  }

  .brand em {
    display: none;
  }

  .lead,
  .strengths article,
  .service-list article,
  .products,
  .flow-list,
  .company,
  .contact-inner {
    max-width: 342px;
  }

  .section-label {
    font-size: 23px;
  }

  .products h2,
  .section-heading h2,
  .company h2,
  .contact h2 {
    font-size: 26px;
  }

  .contact-form {
    padding: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}