:root {
  --ink: #142026;
  --muted: #5a6970;
  --soft: #edf2f3;
  --paper: #f7f8f5;
  --white: #ffffff;
  --line: #d8e0e2;
  --cyan: #00a6c8;
  --green: #2c8a63;
  --amber: #c9872d;
  --steel: #23343c;
  --radius: 8px;
  --max: 1180px;
  --shadow: 0 18px 45px rgba(14, 25, 30, .14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  letter-spacing: 0;
}

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

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

button,
input,
textarea {
  font: inherit;
}

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 20;
  min-height: 68px;
  padding: 0 max(22px, calc((100vw - var(--max)) / 2));
  display: flex;
  align-items: center;
  gap: 28px;
  border-bottom: 1px solid rgba(255, 255, 255, .14);
  background: rgba(10, 19, 23, .72);
  color: var(--white);
  backdrop-filter: blur(18px);
}

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

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 18px;
  line-height: 1.1;
}

.brand small {
  margin-top: 2px;
  color: rgba(255, 255, 255, .68);
  font-size: 11px;
  text-transform: uppercase;
}

.brand-mark {
  width: 38px;
  height: 38px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 4px;
  padding: 6px;
  border: 1px solid rgba(255, 255, 255, .28);
  border-radius: 8px;
  background: rgba(255, 255, 255, .08);
}

.brand-mark span {
  border-radius: 3px;
  background: var(--cyan);
}

.brand-mark span:nth-child(2) {
  background: var(--green);
}

.brand-mark span:nth-child(3) {
  background: var(--amber);
}

.nav-links {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-links a,
.lang-toggle {
  min-height: 38px;
  padding: 8px 12px;
  border-radius: 8px;
  color: rgba(255, 255, 255, .82);
  font-size: 14px;
}

.nav-links a:hover,
.lang-toggle:hover {
  background: rgba(255, 255, 255, .1);
  color: var(--white);
}

.lang-toggle {
  border: 1px solid rgba(255, 255, 255, .28);
  background: rgba(255, 255, 255, .06);
  cursor: pointer;
}

.hero {
  position: relative;
  min-height: 96vh;
  display: grid;
  align-items: end;
  overflow: hidden;
  background: #111d22;
}

.hero picture,
.hero img,
.hero-shade {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero img {
  object-fit: cover;
  object-position: 58% center;
}

.hero-shade {
  background:
    linear-gradient(90deg, rgba(6, 14, 17, .92), rgba(6, 14, 17, .58) 44%, rgba(6, 14, 17, .1)),
    linear-gradient(0deg, rgba(6, 14, 17, .84), transparent 44%);
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(var(--max), calc(100% - 44px));
  margin: 0 auto;
  padding: 140px 0 54px;
  color: var(--white);
}

.eyebrow,
.section-kicker,
.product-label {
  margin: 0 0 14px;
  color: var(--cyan);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(52px, 8vw, 104px);
  line-height: .98;
  letter-spacing: 0;
}

.hero-lede {
  max-width: 690px;
  margin: 26px 0 0;
  color: rgba(255, 255, 255, .86);
  font-size: clamp(18px, 2vw, 25px);
}

.hero-actions {
  margin-top: 34px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.primary-action,
.secondary-action,
.contact-panel button {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  font-weight: 750;
}

.primary-action {
  padding: 12px 20px;
  background: var(--cyan);
  color: #061115;
}

.secondary-action {
  padding: 11px 18px;
  border: 1px solid rgba(255, 255, 255, .36);
  color: var(--white);
}

.hero-metrics {
  max-width: 920px;
  margin: 64px 0 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: rgba(255, 255, 255, .18);
  border: 1px solid rgba(255, 255, 255, .18);
}

.hero-metrics div {
  min-height: 112px;
  padding: 18px;
  background: rgba(9, 19, 23, .58);
}

.hero-metrics dt {
  font-size: 29px;
  font-weight: 800;
  line-height: 1;
}

.hero-metrics dd {
  margin: 10px 0 0;
  color: rgba(255, 255, 255, .72);
  font-size: 14px;
}

.band {
  border-bottom: 1px solid var(--line);
  background: var(--white);
}

.section,
.intro {
  padding: 88px 0;
}

.section-inner {
  width: min(var(--max), calc(100% - 44px));
  margin: 0 auto;
}

.intro-grid {
  display: grid;
  grid-template-columns: minmax(260px, .8fr) minmax(320px, 1.2fr);
  gap: 56px;
  align-items: start;
}

h2 {
  margin: 0;
  font-size: clamp(30px, 4vw, 50px);
  line-height: 1.12;
  letter-spacing: 0;
}

h3 {
  margin: 0;
  font-size: 22px;
  line-height: 1.22;
}

p {
  margin: 0;
}

.intro-grid > p,
.section-heading p,
.proof-copy p,
.product-row p,
.case-item p,
.contact-copy p,
.contact-note {
  color: var(--muted);
  font-size: 17px;
}

.section-heading {
  max-width: 850px;
  margin-bottom: 42px;
}

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

.capability-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.capability {
  min-height: 280px;
  padding: 30px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--white);
}

.cap-number {
  display: inline-block;
  margin-bottom: 42px;
  color: var(--amber);
  font-weight: 850;
}

.capability p {
  margin-top: 18px;
  color: var(--muted);
}

.visual-proof {
  display: grid;
  grid-template-columns: minmax(320px, .9fr) minmax(360px, 1.1fr);
  min-height: 620px;
  background: var(--steel);
  color: var(--white);
}

.proof-copy {
  align-self: center;
  padding: 80px max(32px, calc((100vw - var(--max)) / 2)) 80px max(32px, calc((100vw - var(--max)) / 2));
}

.proof-copy h2 {
  max-width: 560px;
}

.proof-copy p:last-child {
  max-width: 620px;
  margin-top: 22px;
  color: rgba(255, 255, 255, .74);
}

.proof-image {
  min-height: 520px;
  margin: 0;
}

.proof-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

.product-list {
  display: grid;
  gap: 26px;
}

.product-row {
  display: grid;
  grid-template-columns: minmax(280px, .9fr) minmax(320px, 1.1fr);
  gap: 34px;
  align-items: center;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: 0 8px 26px rgba(13, 29, 36, .06);
}

.product-row.reverse img {
  order: 2;
}

.product-row img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: 6px;
}

.product-row p:not(.product-label) {
  margin-top: 16px;
}

.product-row ul {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.product-row li {
  position: relative;
  padding-left: 20px;
  color: #32454d;
}

.product-row li::before {
  content: "";
  position: absolute;
  top: .72em;
  left: 0;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.case-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--white);
}

.case-item img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.case-item h3,
.case-item p {
  padding-inline: 22px;
}

.case-item h3 {
  padding-top: 22px;
}

.case-item p {
  padding-top: 12px;
  padding-bottom: 24px;
}

.process {
  background: #111d22;
  color: var(--white);
}

.process .section-heading p {
  color: var(--cyan);
}

.process-steps {
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  list-style: none;
  background: rgba(255, 255, 255, .16);
  border: 1px solid rgba(255, 255, 255, .16);
}

.process-steps li {
  min-height: 210px;
  padding: 26px;
  counter-increment: step;
  background: #17272d;
}

.process-steps li::before {
  content: "0" counter(step);
  display: block;
  margin-bottom: 36px;
  color: var(--amber);
  font-weight: 850;
}

.process-steps strong,
.process-steps span {
  display: block;
}

.process-steps span {
  margin-top: 12px;
  color: rgba(255, 255, 255, .7);
}

.contact-section {
  width: min(var(--max), calc(100% - 44px));
  margin: 0 auto;
  padding: 88px 0;
  display: grid;
  grid-template-columns: minmax(300px, 1fr) minmax(320px, 430px);
  gap: 58px;
  align-items: start;
}

.contact-copy h2 {
  max-width: 720px;
}

.contact-copy p:last-child {
  margin-top: 22px;
}

.contact-panel {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow);
}

.contact-panel form {
  margin-top: 22px;
  display: grid;
  gap: 14px;
}

.contact-panel label span {
  display: block;
  margin-bottom: 6px;
  color: #455960;
  font-size: 14px;
  font-weight: 700;
}

.contact-panel input,
.contact-panel textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px 13px;
  background: #fbfcfc;
  color: var(--ink);
}

.contact-panel input:focus,
.contact-panel textarea:focus {
  outline: 2px solid rgba(0, 166, 200, .22);
  border-color: var(--cyan);
}

.contact-panel button {
  border: 0;
  padding: 12px 16px;
  background: var(--steel);
  color: var(--white);
  cursor: pointer;
}

.contact-note {
  margin-top: 14px;
  font-size: 14px;
}

.site-footer {
  min-height: 74px;
  padding: 22px max(22px, calc((100vw - var(--max)) / 2));
  display: flex;
  justify-content: space-between;
  gap: 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 980px) {
  .site-header {
    min-height: 62px;
    gap: 12px;
  }

  .nav-links {
    display: none;
  }

  .hero {
    min-height: 92vh;
  }

  .hero-metrics,
  .capability-grid,
  .case-grid,
  .process-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .intro-grid,
  .visual-proof,
  .product-row,
  .contact-section {
    grid-template-columns: 1fr;
  }

  .product-row.reverse img {
    order: 0;
  }

  .proof-copy {
    padding: 72px 32px;
  }
}

@media (max-width: 640px) {
  .hero-content,
  .section-inner,
  .contact-section {
    width: min(100% - 28px, var(--max));
  }

  .hero-content {
    padding-bottom: 32px;
  }

  .brand small {
    display: none;
  }

  .hero-metrics,
  .capability-grid,
  .case-grid,
  .process-steps {
    grid-template-columns: 1fr;
  }

  .hero-metrics {
    margin-top: 38px;
  }

  .hero-metrics div {
    min-height: 88px;
  }

  .section,
  .intro,
  .contact-section {
    padding: 64px 0;
  }

  .product-row {
    padding: 18px;
  }

  .proof-image {
    min-height: 360px;
  }

  .site-footer {
    flex-direction: column;
  }
}