:root {
  --green: #0b6b43;
  --green-dark: #084d34;
  --green-soft: #e9f5ef;
  --orange: #f59b17;
  --text: #14231f;
  --muted: #60706b;
  --line: rgba(191, 207, 200, 0.82);
  --surface: #ffffff;
  --surface-soft: #f5f8f7;
  --shadow: 0 20px 60px rgba(20, 35, 31, 0.10);
  --container: min(1240px, calc(100% - 64px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scrollbar-gutter: stable; }
@supports not (scrollbar-gutter: stable) {
  html { overflow-y: scroll; }
}
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: #fff;
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
.container { width: var(--container); margin: 0 auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: 82px;
  display: grid;
  grid-template-columns: minmax(180px, 260px) 1fr auto;
  align-items: center;
  gap: 28px;
  padding: 0 max(32px, calc((100% - 1240px) / 2));
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid rgba(220, 229, 225, 0.86);
  backdrop-filter: blur(16px);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  width: auto;
  height: 58px;
  overflow: hidden;
}
.brand img {
  width: 46px;
  max-height: 46px;
  object-fit: contain;
  object-position: left center;
}
.brand span {
  font-size: 22px;
  line-height: 1;
  font-weight: 800;
  letter-spacing: 0;
  white-space: nowrap;
}
.main-nav {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  height: 100%;
}
.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 600;
  color: #25352f;
  white-space: nowrap;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 8px;
  right: 8px;
  bottom: 0;
  height: 2px;
  background: var(--green);
  transform: scaleX(0);
  transition: transform .22s ease;
}
.nav-link.active, .nav-link:hover { color: var(--green); }
.nav-link.active::after, .nav-link:hover::after { transform: scaleX(1); }
.header-actions { display: flex; gap: 10px; align-items: center; }
.icon-btn, .mobile-menu-btn {
  width: 42px;
  height: 42px;
  border: 0;
  background: transparent;
  display: grid;
  place-items: center;
  color: var(--text);
  cursor: pointer;
}
.icon-btn svg { width: 22px; fill: none; stroke: currentColor; stroke-width: 1.8; }
.mobile-menu-btn { display: none; }
.mobile-menu-btn span { width: 22px; height: 2px; background: currentColor; display: block; }

.mega-menu {
  position: fixed;
  top: 82px;
  left: 0;
  right: 0;
  z-index: 60;
  background: #fff;
  border-bottom: 1px solid var(--line);
  box-shadow: var(--shadow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: opacity .18s ease, transform .18s ease, visibility .18s;
}
.site-header.is-menu-open .mega-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.mega-inner {
  width: var(--container);
  margin: 0 auto;
  padding: 38px 0 42px;
  display: grid;
  grid-template-columns: minmax(180px, 260px) 1fr 42px;
  gap: 28px;
}
.mega-intro {
  padding: 30px;
  background: linear-gradient(135deg, var(--green-dark), #0f7a4c);
  color: white;
  min-height: 220px;
}
.mega-intro p { margin: 0 0 18px; color: rgba(255,255,255,.72); }
.mega-intro h2 { margin: 0 0 16px; font-size: 25px; line-height: 1.35; }
.mega-intro span { display: block; max-width: 100%; color: rgba(255,255,255,.76); font-size: 13px; line-height: 1.7; overflow-wrap: anywhere; text-wrap: balance; }
.mega-columns {
  display: grid;
  grid-column: 2;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 0;
}
.mega-columns section:nth-child(1) { grid-column: 2; }
.mega-columns section:nth-child(2) { grid-column: 3; }
.mega-columns section:nth-child(3) { grid-column: 4; }
.mega-columns section:nth-child(4) { grid-column: 5; }
.mega-columns section:nth-child(5) { grid-column: 6; }
.mega-columns section { text-align: center; }
.mega-columns h3 { margin: 0 0 14px; color: var(--green); font-size: 17px; }
.mega-columns a { display: block; color: #50605b; font-size: 14px; margin: 9px 0; }
.mega-columns a:hover { color: var(--green); }

.hero {
  position: relative;
  min-height: calc(86vh - 82px);
  overflow: hidden;
  display: flex;
  align-items: stretch;
  background: linear-gradient(90deg, #fff 0%, #f8fbfa 48%, #edf5f2 100%);
}
.hero-media {
  position: absolute;
  inset: 0;
}
.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(255,255,255,.98) 0%, rgba(255,255,255,.88) 31%, rgba(255,255,255,.25) 58%, rgba(255,255,255,.06) 100%),
    linear-gradient(0deg, rgba(255,255,255,.88) 0%, rgba(255,255,255,0) 28%);
}
.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 560px) 1fr;
  gap: 48px;
  align-items: center;
  padding: 88px 0 84px;
}
.hero-copy h1 {
  margin: 0 0 24px;
  font-size: clamp(44px, 5vw, 72px);
  line-height: 1.12;
  letter-spacing: 0;
  color: #0c3327;
}
.hero-copy p {
  max-width: 560px;
  margin: 0 0 36px;
  font-size: 19px;
  line-height: 1.9;
  color: #40534d;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; }
.btn {
  min-width: 150px;
  height: 48px;
  padding: 0 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--green);
  font-weight: 700;
  font-size: 15px;
}
.btn.primary { background: var(--green); color: white; }
.btn.secondary { color: var(--green); background: rgba(255,255,255,.78); }
.hero-panel {
  justify-self: end;
  align-self: end;
  width: min(520px, 100%);
  padding: 28px 32px;
  background: rgba(255,255,255,.86);
  border: 1px solid rgba(255,255,255,.9);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}
.panel-label, .section-kicker {
  margin: 0 0 12px;
  color: var(--green);
  font-size: 14px;
  font-weight: 800;
}
.flow-mini { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.flow-mini span { font-weight: 700; color: #264039; }
.flow-mini i { width: 28px; height: 1px; background: #7db79b; }

.anchor-bar {
  position: sticky;
  top: 82px;
  z-index: 20;
  display: flex;
  justify-content: center;
  gap: 0;
  background: rgba(255,255,255,.96);
  border-bottom: 0.5px solid var(--line);
  backdrop-filter: blur(14px);
}
.anchor-bar a {
  min-width: 156px;
  padding: 23px 32px;
  text-align: center;
  color: #485b55;
  font-size: 15px;
  font-weight: 800;
  border-left: 0.5px solid var(--line);
}
.anchor-bar a:last-child { border-right: 0.5px solid var(--line); }
.anchor-bar a:hover, .anchor-bar a.is-active { color: var(--green); background: var(--green-soft); }

.holding-page { min-height: calc(100vh - 82px); background: #fff; }
.holding-stage {
  min-height: min(680px, calc(100vh - 82px));
  display: grid;
  align-items: center;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(112deg, #fff 0%, #fff 62%, #f2f8f5 100%);
}
.holding-content { padding: 120px 0; }
.holding-content h1 {
  max-width: 620px;
  margin: 0 0 22px;
  color: #0c3327;
  font-size: clamp(48px, 6vw, 82px);
  line-height: 1.12;
}
.holding-content > p:not(.section-kicker) {
  max-width: 540px;
  margin: 0 0 38px;
  font-size: 18px;
  color: var(--muted);
}
.holding-footer { padding-top: 54px; }

.section { padding: 108px 0; scroll-margin-top: 150px; }
.split-section { background: #fff; }
.split-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(420px, .92fr);
  gap: 86px;
  align-items: center;
}
h2 {
  margin: 0 0 22px;
  font-size: clamp(30px, 3vw, 46px);
  line-height: 1.24;
  letter-spacing: 0;
}
.lead {
  margin: 0 0 28px;
  color: var(--muted);
  font-size: 17px;
  line-height: 2;
}
.text-link {
  display: inline-flex;
  color: var(--green);
  font-weight: 800;
}
.metric-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.metric-row article {
  padding: 34px 28px;
  background: var(--surface-soft);
}
.metric-row strong { display: block; font-size: 34px; color: var(--green); line-height: 1.1; }
.metric-row span { color: var(--muted); font-weight: 700; }

.value-chain { background: linear-gradient(180deg, #f7faf9 0%, #fff 100%); }
.section-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 460px);
  gap: 48px;
  align-items: end;
  margin-bottom: 54px;
}
.section-head > :only-child { grid-column: 1 / -1; }
.section-head p:not(.section-kicker) { color: var(--muted); margin: 0; line-height: 1.9; }
.chain {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 22px;
}
.chain article {
  position: relative;
  min-height: 220px;
  padding: 30px 24px;
  background: white;
  border: 1px solid var(--line);
}
.chain article::after {
  content: "";
  position: absolute;
  top: 54px;
  right: -22px;
  width: 22px;
  border-top: 1px dashed #8abda3;
}
.chain article:last-child::after { display: none; }
.chain span { color: var(--orange); font-weight: 800; }
.chain h3 { margin: 26px 0 12px; font-size: 22px; }
.chain p { margin: 0; color: var(--muted); font-size: 15px; line-height: 1.8; }

.projects { background: #fff; }
.project-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.project-card {
  border: 1px solid var(--line);
  background: white;
  box-shadow: 0 14px 36px rgba(20, 35, 31, .06);
}
.project-card img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; }
.project-card div { padding: 28px; }
.project-card p { margin: 0 0 10px; color: var(--green); font-weight: 800; font-size: 14px; }
.project-card h3 { margin: 0 0 14px; font-size: 24px; }
.project-card span { color: var(--muted); line-height: 1.8; }

.technology { background: #f7faf9; }
.tech-grid {
  display: grid;
  grid-template-columns: minmax(0, .85fr) minmax(480px, 1.15fr);
  gap: 76px;
  align-items: center;
}
.check-list { padding: 0; margin: 32px 0 0; list-style: none; }
.check-list li {
  padding: 14px 0 14px 34px;
  position: relative;
  border-bottom: 1px solid var(--line);
  color: #415650;
}
.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 22px;
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--green);
}
.tech-media {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.tech-media img {
  width: 100%;
  aspect-ratio: 16 / 11;
  object-fit: cover;
}
.tech-media .main-img {
  grid-column: 1 / -1;
  aspect-ratio: 16 / 8.5;
}

.sustainability { padding: 0; background: #fff; }
.sustainability-visual { position: relative; width: 100%; min-height: min(48vw, 680px); margin: 0; overflow: hidden; background: #113d31; }
.sustainability-visual > img { width: 100%; height: min(48vw, 680px); min-height: 560px; object-fit: cover; object-position: center; }
.sustainability-overlay { position: absolute; inset: 0; display: grid; align-items: center; color: #fff; background: linear-gradient(90deg, rgba(5, 43, 32, .72) 0%, rgba(5, 43, 32, .46) 42%, rgba(5, 43, 32, .08) 74%, rgba(5, 43, 32, 0) 100%); }
.sustainability-copy { --sustainability-copy-width: min(920px, 100%); padding: 80px 0; }
.sustainability-copy .section-kicker { color: rgba(255,255,255,.78); }
.sustainability-copy h2 { width: var(--sustainability-copy-width); max-width: none; margin: 0 0 24px; color: #fff; font-size: clamp(42px, 4.4vw, 68px); white-space: nowrap; }
.sustainability-copy > p:not(.section-kicker) { max-width: 620px; margin: 0; color: rgba(255,255,255,.88); font-size: 18px; line-height: 1.95; }
.sustainability-points { display: flex; width: var(--sustainability-copy-width); margin-top: 46px; border-top: 1px solid rgba(255,255,255,.45); border-bottom: 1px solid rgba(255,255,255,.30); }
.sustainability-points span { min-width: 152px; padding: 16px 28px; color: #fff; font-size: 15px; font-weight: 800; text-align: center; border-left: 1px solid rgba(255,255,255,.35); }
.sustainability-points span:first-child { border-left: 0; }

.news-support { background: #f7faf9; }
.section-head.compact { margin-bottom: 28px; }
.news-list { display: grid; gap: 18px; }
.news-list article {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 24px;
  padding: 18px;
  background: white;
  border: 1px solid var(--line);
}
.news-list img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; }
.news-list time { color: var(--muted); font-size: 14px; }
.news-list h3 { margin: 10px 0 0; font-size: 22px; line-height: 1.5; }
.home-news-head { display: flex; align-items: end; justify-content: space-between; gap: 28px; }
.home-news-head > a { padding-bottom: 8px; color: var(--green); font-size: 14px; font-weight: 800; white-space: nowrap; }
.home-news-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; }
.home-news-grid article { min-width: 0; }
.home-news-grid a { display: flex; height: 100%; min-width: 0; flex-direction: column; color: var(--text); }
.home-news-grid img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; }
.home-news-grid time { display: block; margin-top: 18px; color: var(--green); font-size: 14px; font-weight: 800; }
.home-news-grid h3 { margin: 10px 0 12px; font-size: 24px; line-height: 1.42; }
.home-news-grid p { margin: 0; color: var(--muted); font-size: 15px; line-height: 1.8; }
.home-news-grid a > span { display: inline-flex; gap: 10px; margin-top: auto; padding-top: 20px; color: var(--green); font-size: 14px; font-weight: 800; }
.home-news-grid b { font-size: 18px; line-height: 1; }
.service-page { min-height: calc(100vh - 82px); background: #fff; }
.service-stage { min-height: calc(100vh - 82px); display: grid; align-items: center; background: linear-gradient(110deg, #fff 0%, #fff 62%, #f1f7f4 100%); }
.service-grid { display: grid; grid-template-columns: minmax(0, .9fr) minmax(500px, 1.1fr); gap: 100px; align-items: stretch; padding: 80px 0; }
.service-copy { display: flex; min-height: 100%; flex-direction: column; padding: 12px 0; }
.service-copy h1 { margin: 0 0 16px; color: #0c3327; font-size: clamp(36px, 2.8vw, 46px); line-height: 1.18; }
.service-copy > p:not(.section-kicker) { max-width: 400px; margin: 0 0 40px; color: var(--muted); font-size: 17px; line-height: 1.9; }
.contact-list { display: grid; flex: 1; grid-template-rows: repeat(3, 1fr); margin: 0; }
.contact-list div { display: flex; flex-direction: column; justify-content: center; padding: 18px 0; border-top: 0.5px solid var(--line); }
.contact-list dt { margin-bottom: 5px; color: var(--muted); font-size: 14px; }
.contact-list dd { margin: 0; color: var(--text); font-size: 17px; font-weight: 700; }
.contact-list a { color: var(--green); }
.contact-form { display: grid; gap: 22px; padding: 38px; background: rgba(255,255,255,.82); border: 1px solid var(--line); box-shadow: 0 20px 60px rgba(20,35,31,.08); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.contact-form label { display: grid; gap: 8px; color: #415650; font-size: 14px; font-weight: 700; }
.contact-form input, .contact-form textarea { width: 100%; padding: 13px 14px; border: 1px solid #cbd8d2; border-radius: 0; color: var(--text); background: #fff; font: inherit; line-height: 1.5; outline: none; }
.contact-form input:focus, .contact-form textarea:focus { border-color: var(--green); box-shadow: 0 0 0 3px rgba(11,107,67,.10); }
.contact-form input[aria-invalid="true"], .contact-form textarea[aria-invalid="true"] { border-color: #b54435; box-shadow: 0 0 0 3px rgba(181,68,53,.10); }
.contact-form textarea { resize: vertical; min-height: 114px; }
.field-error { min-height: 18px; color: #a23a2c; font-size: 13px; font-weight: 500; line-height: 1.4; }
.form-submit { display: flex; align-items: center; gap: 20px; }
.form-submit p { margin: 0; color: var(--green); font-size: 14px; line-height: 1.6; }
.form-submit p.is-error { color: #a23a2c; }

.site-footer {
  padding: 62px 0;
  background: #eef4f1;
  border-top: 1px solid var(--line);
}
.footer-grid {
  display: grid;
  grid-template-columns: minmax(220px, 250px) minmax(0, 1fr);
  gap: clamp(36px, 5vw, 72px);
}
.footer-logo { display: flex; align-items: center; gap: 12px; margin-bottom: 22px; }
.footer-logo img { width: 48px; }
.footer-logo strong { font-size: 22px; }
.footer-brand p { color: var(--muted); line-height: 1.9; margin: 0; }
.footer-map {
  display: grid;
  grid-template-columns: repeat(5, minmax(86px, 1fr)) minmax(184px, 1.45fr);
  gap: clamp(14px, 1.8vw, 26px);
}
.footer-map h3 { margin: 0 0 13px; font-size: 15px; }
.footer-map a { display: block; color: var(--muted); margin: 8px 0; font-size: 13px; line-height: 1.55; }
.footer-contact { min-width: 0; }
.footer-contact span { display: block; color: var(--muted); margin: 7px 0; font-size: 13px; line-height: 1.55; }
.footer-contact .footer-email { font-size: 12px; white-space: nowrap; }
.site-compliance { padding: 18px 0; background: #e4eeea; border-top: .5px solid #cbdcd2; }
.site-compliance-inner { display: flex; flex-wrap: wrap; gap: 8px 22px; align-items: center; color: #60746c; font-size: 12px; line-height: 1.7; }
.site-compliance a { color: #47675b; text-decoration: none; }
.site-compliance a:hover { color: var(--green); text-decoration: underline; text-underline-offset: 3px; }
.back-to-top { position: fixed; right: 32px; bottom: 32px; z-index: 80; display: grid; width: 52px; height: 52px; padding: 0; place-items: center; border: 1px solid rgba(11,107,67,.32); border-radius: 50%; background: rgba(255,255,255,.94); box-shadow: 0 10px 28px rgba(12,48,37,.14); color: var(--green); cursor: pointer; opacity: 0; pointer-events: none; transform: translateY(10px); transition: opacity .2s ease, transform .2s ease, background .2s ease, color .2s ease; }
.back-to-top:hover { background: var(--green); color: #fff; }
.back-to-top-icon { position: relative; display: block; width: 16px; height: 16px; flex: 0 0 16px; }
.back-to-top-icon::before { position: absolute; left: 2px; top: 5px; width: 10px; height: 10px; border-top: 2px solid currentColor; border-left: 2px solid currentColor; content: ""; transform: rotate(45deg); }
.back-to-top::after { position: absolute; right: calc(100% + 12px); top: 50%; padding: 7px 10px; border: 1px solid rgba(11,107,67,.2); background: #fff; box-shadow: 0 8px 22px rgba(12,48,37,.12); color: #285244; content: attr(data-tooltip); font-size: 13px; line-height: 1; opacity: 0; pointer-events: none; transform: translate(4px, -50%); transition: opacity .18s ease, transform .18s ease; white-space: nowrap; }
.back-to-top:hover::after, .back-to-top:focus-visible::after { opacity: 1; transform: translate(0, -50%); }
.back-to-top:focus-visible { outline: 2px solid #0b6b43; outline-offset: 3px; }
.back-to-top.is-visible { opacity: 1; pointer-events: auto; transform: translateY(0); }

.page-hero {
  padding: 90px 0 56px;
  background: linear-gradient(180deg, #f7fbfa 0%, #fff 100%);
}
.page-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, .72fr) minmax(480px, 1fr);
  gap: 68px;
  align-items: center;
}
.page-hero h1 { font-size: clamp(42px, 5vw, 72px); line-height: 1.15; margin: 0 0 22px; }
.page-hero p { color: var(--muted); font-size: 20px; line-height: 1.9; }
.page-hero img { aspect-ratio: 16 / 9; object-fit: cover; }
.page-anchor { position: sticky; top: 82px; }
.prose-section.alt { background: #f7faf9; }
.content-grid {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 80px;
}
.content-grid p:not(.section-kicker) { color: var(--muted); font-size: 18px; line-height: 2.05; }
.culture-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.culture-grid article {
  min-height: 220px;
  padding: 34px;
  border: 1px solid var(--line);
  background: white;
}
.culture-grid span { color: var(--green); font-weight: 800; }
.culture-grid h3 { font-size: 24px; line-height: 1.5; }

@media (max-width: 1180px) {
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
  .footer-map { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 30px 24px; }
}

@media (max-width: 980px) {
  :root { --container: min(100% - 36px, 760px); }
  .site-header { grid-template-columns: 1fr auto; padding: 0 18px; }
  .main-nav {
    display: none;
    position: fixed;
    top: 82px;
    left: 0;
    right: 0;
    height: auto;
    padding: 18px;
    background: #fff;
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  body.is-mobile-nav-open .main-nav { display: flex; }
  .nav-link {
    min-height: 50px;
    border-bottom: 1px solid var(--line);
    justify-content: space-between;
  }
  .nav-link::after { display: none; }
  .mobile-menu-btn { display: grid; }
  body.is-mobile-nav-open .mobile-menu-btn span:first-child { transform: rotate(45deg) translate(3px, 3px); }
  body.is-mobile-nav-open .mobile-menu-btn span:last-child { transform: rotate(-45deg) translate(3px, -3px); }
  .mega-menu { display: none; }
  .hero { min-height: auto; }
  .hero-grid, .split-grid, .tech-grid, .service-grid, .footer-grid, .page-hero-grid, .content-grid {
    grid-template-columns: 1fr;
  }
  .hero-grid { padding: 76px 0 60px; }
  .hero-panel { justify-self: stretch; }
  .anchor-bar { top: 82px; overflow-x: auto; justify-content: flex-start; }
  .anchor-bar a { min-width: auto; white-space: nowrap; padding: 15px 20px; }
  .section { padding: 78px 0; }
  .section-head { grid-template-columns: 1fr; gap: 14px; }
  .home-news-head { align-items: start; flex-direction: column; gap: 12px; }
  .chain, .project-grid, .culture-grid, .footer-map, .home-news-grid { grid-template-columns: 1fr; }
  .chain article::after { display: none; }
  .metric-row { grid-template-columns: 1fr; }
  .news-list article { grid-template-columns: 1fr; }
  .sustainability-visual, .sustainability-visual > img { min-height: 620px; height: 620px; }
  .sustainability-overlay { background: linear-gradient(90deg, rgba(5,43,32,.74) 0%, rgba(5,43,32,.38) 100%); }
  .sustainability-copy { padding: 64px 0; }
  .sustainability-copy h2 { white-space: normal; }
  .sustainability-points { width: 100%; flex-direction: column; }
  .sustainability-points span { width: 100%; min-width: 0; text-align: left; border-left: 0; border-top: 1px solid rgba(255,255,255,.35); }
  .sustainability-points span:first-child { border-top: 0; }
  .form-row { grid-template-columns: 1fr; }
  .contact-form { padding: 28px; }
  .service-grid { gap: 50px; }
  .page-hero img { min-height: 260px; }
  .site-compliance-inner { gap: 6px 14px; }
  .back-to-top { right: 18px; bottom: max(18px, env(safe-area-inset-bottom)); width: 48px; height: 48px; border-radius: 50%; }
  .back-to-top::after { display: none; }
}

@media (max-width: 620px) {
  .brand img { width: 38px; max-height: 38px; }
  .brand span { font-size: 19px; }
  .hero-copy h1, .page-hero h1 { font-size: 38px; }
  .hero-copy p, .lead { font-size: 16px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .btn { width: 100%; }
  .tech-media { grid-template-columns: 1fr; }
  .tech-media .main-img { aspect-ratio: 16 / 11; }
}