:root {
  --bg: #ffffff;
  --ink: #102432;
  --muted: #5c6b73;
  --line: #dbe4e7;
  --soft: #f4f8f8;
  --steel: #123142;
  --blue: #28657a;
  --green: #2f8f72;
  --amber: #c2872d;
  --shadow: 0 18px 60px rgba(16, 36, 50, 0.12);
  --radius: 8px;
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
}

body.menu-open {
  overflow: hidden;
}

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

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid rgba(219, 228, 231, 0.8);
  backdrop-filter: blur(14px);
}

.nav {
  width: min(var(--max), calc(100% - 40px));
  min-height: 72px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

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

.brand-mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  background: var(--steel);
  color: #ffffff;
  border-radius: 7px;
  font-size: 13px;
  font-weight: 800;
}

.brand strong,
.brand small {
  display: block;
  line-height: 1.1;
}

.brand strong {
  font-size: 15px;
}

.brand small {
  margin-top: 4px;
  color: var(--muted);
  font-size: 12px;
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 22px;
  color: #334853;
  font-size: 14px;
  font-weight: 650;
}

.nav-links a {
  padding: 10px 0;
  border-bottom: 2px solid transparent;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--green);
  border-bottom-color: var(--green);
}

.menu-button {
  display: none;
}

.hero {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  padding: 64px 0 28px;
}

.hero-content {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(460px, 1.14fr);
  gap: 54px;
  align-items: center;
}

.hero-copy h1 {
  max-width: 660px;
  margin: 0;
  color: var(--ink);
  font-size: clamp(44px, 6.4vw, 74px);
  line-height: 0.96;
  font-weight: 820;
}

.hero-copy p {
  max-width: 610px;
  margin: 26px 0 0;
  color: #455961;
  font-size: 20px;
  line-height: 1.6;
}

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

.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 20px;
  border: 1px solid transparent;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 760;
  line-height: 1.2;
  cursor: pointer;
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    background 180ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button.primary {
  background: var(--green);
  color: #ffffff;
  box-shadow: 0 10px 26px rgba(47, 143, 114, 0.22);
}

.button.primary:hover,
.button.primary:focus-visible {
  background: #267c63;
}

.button.secondary {
  border-color: #c8d7dc;
  background: #ffffff;
  color: var(--steel);
}

.button.secondary:hover,
.button.secondary:focus-visible {
  border-color: var(--blue);
  color: var(--blue);
}

.hero-media {
  margin: 0;
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  background: #e9eef0;
}

.hero-media img {
  width: 100%;
  aspect-ratio: 1.35 / 1;
  object-fit: cover;
}

.hero-media figcaption {
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 18px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.hero-media span {
  min-height: 42px;
  display: grid;
  place-items: center;
  padding: 8px 10px;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(219, 228, 231, 0.82);
  border-radius: 6px;
  color: var(--steel);
  font-size: 12px;
  font-weight: 760;
  text-align: center;
  backdrop-filter: blur(10px);
}

.hero-strip {
  margin-top: 48px;
  padding: 18px 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--line);
}

.hero-strip span {
  min-height: 48px;
  display: grid;
  place-items: center;
  background: #ffffff;
  color: var(--steel);
  font-size: 14px;
  font-weight: 720;
  text-align: center;
}

.section {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  padding: 92px 0;
}

.section-heading {
  max-width: 760px;
  margin: 0 auto 42px;
  text-align: center;
}

.section-heading.align-left {
  margin-left: 0;
  text-align: left;
}

.section-heading h2,
.quality-panel h2,
.rfq-copy h2,
.contact h2 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(32px, 4.2vw, 50px);
  line-height: 1.05;
  font-weight: 820;
}

.section-heading p,
.quality-panel p,
.rfq-copy p,
.contact p {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.65;
}

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

.proof-grid article,
.case-row article,
.contact-card {
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
}

.proof-grid strong {
  display: block;
  color: var(--green);
  font-size: 13px;
  font-weight: 820;
}

.proof-grid h3,
.case-row h3,
.contact-card h3 {
  margin: 13px 0 10px;
  font-size: 22px;
  line-height: 1.18;
}

.proof-grid p,
.case-row p,
.contact-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}

.roadmap {
  border-top: 1px solid var(--line);
}

.timeline {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.timeline article {
  display: grid;
  grid-template-columns: 180px 0.65fr 1fr;
  gap: 28px;
  align-items: start;
  padding: 30px 0;
  border-bottom: 1px solid var(--line);
}

.timeline article:last-child {
  border-bottom: 0;
}

.timeline span {
  color: var(--green);
  font-size: 13px;
  font-weight: 850;
  text-transform: uppercase;
}

.timeline h3 {
  margin: 0;
  font-size: 28px;
  line-height: 1.08;
}

.timeline p {
  margin: 0;
  color: var(--muted);
  line-height: 1.62;
}

.timeline strong {
  grid-column: 3;
  display: block;
  margin-top: -8px;
  color: var(--steel);
  font-size: 14px;
  line-height: 1.45;
}

.split {
  display: grid;
  grid-template-columns: 0.82fr 1.18fr;
  gap: 58px;
  align-items: start;
  border-top: 1px solid var(--line);
}

.capability-list {
  display: grid;
  gap: 14px;
}

.capability-list article {
  display: grid;
  grid-template-columns: 58px 1fr;
  gap: 20px;
  padding: 22px 0 24px;
  border-bottom: 1px solid var(--line);
}

.capability-list article:first-child {
  border-top: 1px solid var(--line);
}

.number {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 6px;
  background: var(--soft);
  color: var(--blue);
  font-size: 13px;
  font-weight: 850;
}

.capability-list h3 {
  margin: 0;
  font-size: 24px;
}

.capability-list p {
  margin: 8px 0 0;
  color: var(--muted);
  line-height: 1.6;
}

.supplier {
  display: grid;
  grid-template-columns: 0.86fr 1.14fr;
  gap: 48px;
  align-items: start;
  padding-top: 0;
}

.supplier-copy h2 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(32px, 4vw, 48px);
  line-height: 1.05;
  font-weight: 820;
}

.supplier-copy p {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.65;
}

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

.supplier-grid article {
  min-height: 180px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(244, 248, 248, 0.72)),
    #ffffff;
}

.supplier-grid h3,
.operating-grid h3 {
  margin: 0 0 12px;
  font-size: 22px;
  line-height: 1.18;
}

.supplier-grid p,
.operating-grid p {
  margin: 0;
  color: var(--muted);
  line-height: 1.58;
}

.materials {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.material-board {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.material-board div {
  min-height: 230px;
  padding: 28px;
  background: #ffffff;
  border-right: 1px solid var(--line);
}

.material-board div:nth-child(2n) {
  background: var(--soft);
}

.material-board div:last-child {
  border-right: 0;
}

.material-board h3 {
  margin: 0 0 16px;
  font-size: 23px;
}

.material-board p {
  margin: 0;
  color: var(--muted);
  line-height: 1.62;
}

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

.case-row article {
  min-height: 260px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.case-row article:nth-child(2) {
  border-color: rgba(47, 143, 114, 0.35);
  background: #f7fbfa;
}

.case-row a {
  margin-top: 28px;
  color: var(--green);
  font-size: 14px;
  font-weight: 820;
}

.quality {
  width: 100%;
  max-width: none;
  background: var(--steel);
  color: #ffffff;
}

.quality-panel {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 70px;
  align-items: center;
}

.quality-panel h2,
.quality-panel p {
  color: #ffffff;
}

.quality-panel p {
  color: rgba(255, 255, 255, 0.78);
}

.quality-panel ol {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.quality-panel li {
  min-height: 64px;
  display: grid;
  grid-template-columns: 62px 1fr;
  align-items: center;
  gap: 16px;
  padding: 15px 18px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 7px;
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.35;
}

.quality-panel li span {
  color: #77d0b0;
  font-size: 13px;
  font-weight: 850;
}

.operating {
  border-bottom: 1px solid var(--line);
}

.operating-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
}

.operating-grid article {
  min-height: 260px;
  padding: 26px;
  background: #ffffff;
}

.operating-grid article:nth-child(2),
.operating-grid article:nth-child(4) {
  background: var(--soft);
}

.rfq-section {
  display: grid;
  grid-template-columns: 0.78fr 1.22fr;
  gap: 54px;
  align-items: start;
}

.rfq-copy ul {
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.rfq-copy li {
  position: relative;
  padding-left: 26px;
  color: var(--steel);
  font-weight: 700;
}

.rfq-copy li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
}

.rfq-form {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--soft);
}

.rfq-form label {
  display: grid;
  gap: 8px;
  color: var(--steel);
  font-size: 13px;
  font-weight: 800;
}

.rfq-form input,
.rfq-form select,
.rfq-form textarea {
  width: 100%;
  border: 1px solid #c9d6db;
  border-radius: 6px;
  background: #ffffff;
  color: var(--ink);
  font-size: 15px;
  line-height: 1.4;
}

.rfq-form input,
.rfq-form select {
  min-height: 48px;
  padding: 0 13px;
}

.rfq-form textarea {
  resize: vertical;
  min-height: 128px;
  padding: 12px 13px;
}

.rfq-form input:focus,
.rfq-form select:focus,
.rfq-form textarea:focus {
  border-color: var(--green);
  outline: 3px solid rgba(47, 143, 114, 0.16);
}

.full {
  grid-column: 1 / -1;
}

.form-note {
  grid-column: 1 / -1;
  min-height: 24px;
  margin: 0;
  color: var(--blue);
  font-size: 14px;
  line-height: 1.45;
}

.contact {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 48px;
  align-items: start;
  border-top: 1px solid var(--line);
}

.contact-card {
  background: var(--steel);
  color: #ffffff;
}

.contact-card h3,
.contact-card p {
  color: #ffffff;
}

.contact-card p {
  color: rgba(255, 255, 255, 0.78);
}

.contact-card .button {
  margin-top: 22px;
  width: 100%;
  border-color: rgba(255, 255, 255, 0.28);
  background: transparent;
  color: #ffffff;
}

.footer {
  width: min(var(--max), calc(100% - 40px));
  min-height: 88px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

.footer p {
  margin: 0;
}

.footer a {
  color: var(--green);
  font-weight: 800;
}

@media (max-width: 980px) {
  .nav {
    width: min(100% - 28px, var(--max));
  }

  .menu-button {
    width: 88px;
    min-height: 42px;
    display: inline-grid;
    grid-template-columns: 18px 1fr;
    align-items: center;
    gap: 3px 8px;
    padding: 8px 11px;
    border: 1px solid var(--line);
    border-radius: 6px;
    background: #ffffff;
    color: var(--steel);
    font-size: 13px;
    font-weight: 800;
  }

  .menu-button span {
    width: 18px;
    height: 2px;
    background: var(--steel);
    grid-column: 1;
  }

  .menu-button span:first-child {
    margin-top: 2px;
  }

  .menu-button::after {
    content: "";
  }

  .nav-links {
    position: fixed;
    inset: 72px 0 auto 0;
    display: none;
    grid-template-columns: 1fr;
    gap: 0;
    padding: 10px 20px 22px;
    background: #ffffff;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 20px 36px rgba(16, 36, 50, 0.1);
  }

  body.menu-open .nav-links {
    display: grid;
  }

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

  .hero,
  .section,
  .quality-panel,
  .footer {
    width: min(100% - 28px, var(--max));
  }

  .hero {
    padding-top: 42px;
  }

  .hero-content,
  .split,
  .quality-panel,
  .rfq-section,
  .contact {
    grid-template-columns: 1fr;
  }

  .hero-content,
  .split,
  .rfq-section,
  .contact,
  .quality-panel {
    gap: 34px;
  }

  .hero-copy h1 {
    font-size: clamp(40px, 10vw, 58px);
  }

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

  .hero-media img {
    aspect-ratio: 1.5 / 1;
  }

  .hero-strip,
  .proof-grid,
  .material-board,
  .case-row,
  .supplier-grid,
  .operating-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .timeline article {
    grid-template-columns: 150px 1fr;
  }

  .timeline p,
  .timeline strong {
    grid-column: 2;
  }

  .supplier {
    grid-template-columns: 1fr;
    padding-top: 72px;
  }

  .material-board div:nth-child(2) {
    border-right: 0;
  }

  .material-board div:nth-child(3) {
    border-top: 1px solid var(--line);
  }

  .material-board div:nth-child(4) {
    border-top: 1px solid var(--line);
  }

  .section {
    padding: 72px 0;
  }
}

@media (max-width: 640px) {
  .brand small {
    display: none;
  }

  .hero-copy h1 {
    font-size: 38px;
    line-height: 1;
  }

  .hero-actions,
  .button {
    width: 100%;
  }

  .hero-media figcaption {
    position: static;
    grid-template-columns: 1fr;
    padding: 10px;
    background: #ffffff;
  }

  .hero-media span {
    border-color: var(--line);
  }

  .hero-strip,
  .proof-grid,
  .material-board,
  .case-row,
  .rfq-form,
  .supplier-grid,
  .operating-grid {
    grid-template-columns: 1fr;
  }

  .timeline article {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .timeline p,
  .timeline strong {
    grid-column: 1;
  }

  .timeline h3 {
    font-size: 24px;
  }

  .hero-strip {
    gap: 0;
  }

  .hero-strip span {
    border-bottom: 1px solid var(--line);
  }

  .proof-grid article,
  .case-row article,
  .contact-card,
  .rfq-form {
    padding: 22px;
  }

  .material-board div,
  .material-board div:nth-child(2),
  .material-board div:nth-child(3),
  .material-board div:nth-child(4) {
    min-height: auto;
    border: 0;
    border-bottom: 1px solid var(--line);
  }

  .material-board div:last-child {
    border-bottom: 0;
  }

  .quality-panel li {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .footer {
    padding: 26px 0;
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}