:root {
  --green-950: #0d2e27;
  --green-900: #123d33;
  --green-800: #1b5142;
  --green-700: #2a6c58;
  --green-500: #66a876;
  --green-300: #b5d7b0;
  --mint: #e7f1e8;
  --cream: #f7f7f1;
  --ink: #1f302b;
  --muted: #697873;
  --line: rgba(28, 81, 66, 0.16);
  --white: #fff;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--cream);
  color: var(--ink);
  font-family: "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
.container { width: min(1180px, calc(100% - 64px)); margin: 0 auto; }
.section { padding: 126px 0; }
.site-header {
  position: fixed; z-index: 10; top: 0; left: 0; width: 100%;
  border-bottom: 1px solid rgba(255,255,255,.16);
  color: white; transition: .3s ease;
}
.site-header.scrolled { background: rgba(13,46,39,.96); box-shadow: 0 8px 24px rgba(0,0,0,.08); }
.header-inner { height: 78px; display: flex; align-items: center; gap: 40px; }
.brand { display: inline-flex; align-items: center; width:230px; }
.brand img { display:block; width:100%; height:auto; }
.main-nav { display: flex; align-items: center; justify-content: center; gap: 34px; margin-left: auto; }
.main-nav a { position: relative; color: rgba(255,255,255,.88); font-size: 14px; }
.main-nav a:after { content:""; position:absolute; left:0; bottom:-12px; width:0; border-bottom:2px solid #b9e3b2; transition:.25s; }
.main-nav a:hover:after { width:100%; }
.header-action { margin-left: 10px; padding: 12px 20px; border: 1px solid rgba(255,255,255,.5); border-radius: 999px; font-size: 13px; }
.header-action span { margin-left: 5px; color:#d3f2cb; }
.lang-toggle { padding:8px 10px; border:0; border-left:1px solid rgba(255,255,255,.3); color:white; background:transparent; font:700 11px "Manrope"; letter-spacing:.12em; cursor:pointer; }
.menu-toggle { display:none; }

.hero { position:relative; min-height: 770px; height: 100vh; color: white; overflow:hidden; }
.hero-image { position:absolute; inset:0; background: url("assets/factory-hero.jpg") center center/cover no-repeat; transform:scale(1.02); }
.hero-overlay { position:absolute; inset:0; background: linear-gradient(90deg, rgba(8,42,35,.92) 0%, rgba(12,55,44,.73) 34%, rgba(12,55,44,.22) 67%, rgba(12,55,44,.1) 100%); }
.hero-content { position:relative; display:flex; height:100%; flex-direction:column; justify-content:center; padding-top:66px; }
.eyebrow, .section-kicker { margin:0 0 24px; color: var(--green-700); font: 700 11px/1 "Manrope"; letter-spacing:.25em; }
.eyebrow { color:#d3f2cb; }
.eyebrow span, .section-kicker span { display:inline-block; width:28px; margin-right:10px; border-top:1px solid currentColor; vertical-align:middle; }
h1,h2 { margin:0; font-weight:700; letter-spacing:.01em; }
h1 { font-size: clamp(58px, 6.2vw, 86px); line-height:1.15; }
h1 em,h2 em { color:#b9e2b3; font-family: "PingFang SC", "Microsoft YaHei", Arial, sans-serif; font-style:normal; font-weight:500; }
.contact-details { display:grid; gap:10px; margin-top:28px; color:#f5f7f0; }
.contact-details p { display:flex; gap:16px; margin:0; }
.contact-details strong { min-width:42px; color:#b9e2b3; font-weight:600; }
.contact-details a { color:#f5f7f0; text-decoration:none; }
.contact-details a:hover { color:#b9e2b3; }
.hero-copy { max-width:520px; margin:28px 0 0; color:rgba(255,255,255,.78); font-size:17px; line-height:2; }
.hero-actions { display:flex; align-items:center; gap:28px; margin-top:42px; }
.button { display:inline-flex; align-items:center; gap:14px; border-radius:999px; padding:16px 25px; font-size:14px; font-weight:700; transition:.25s; }
.button-primary { background:#d5e9ce; color:var(--green-900); }
.button-primary:hover { background:white; transform:translateY(-2px); }
.button-text { color:white; }
.button-text i { display:inline-grid; width:34px; height:34px; place-items:center; border:1px solid rgba(255,255,255,.4); border-radius:50%; color:#cce7c5; font-size:9px; font-style:normal; }
.hero-foot { position:absolute; left:50%; bottom:28px; display:flex; align-items:center; justify-content:space-between; transform:translateX(-50%); }
.hero-note { display:flex; align-items:center; gap:13px; }
.hero-note > span { font:700 25px "Manrope"; color:#cbe5c5; }
.hero-note strong,.hero-note small { display:block; }
.hero-note strong { font-size:13px; }
.hero-note small { margin-top:5px; font:600 8px "Manrope"; letter-spacing:.2em; opacity:.58; }
.hero-scroll { display:flex; align-items:center; gap:8px; font-size:11px; letter-spacing:.18em; opacity:.7; }
.hero-scroll span { display:inline-block; width:40px; border-top:1px solid currentColor; }

h2 { color:var(--green-900); font-size:clamp(38px,4vw,58px); line-height:1.32; }
h2 em { color:#6a9d67; }
.intro { background: #f6f7f0; }
.intro-grid { display:grid; grid-template-columns:1fr 1fr; gap:90px; }
.intro-body { padding-top:33px; }
.intro-body p { margin:0 0 16px; color:var(--muted); font-size:15px; line-height:2; }
.intro-body .lead { color:var(--ink); font-size:18px; font-weight:600; }
.inline-link { display:inline-block; margin-top:18px; color:var(--green-700); font-size:14px; font-weight:700; }
.inline-link span { margin-left:12px; transition:.2s; }
.inline-link:hover span { margin-left:18px; }
.principle-row { display:grid; grid-template-columns:repeat(3,1fr); gap:1px; margin-top:82px; background:var(--line); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.principle-row article { position:relative; background:#f6f7f0; padding:38px 34px 34px; }
.principle-row article > span { position:absolute; top:32px; right:30px; color:#9cb4a5; font:700 11px "Manrope"; letter-spacing:.12em; }
.principle-row h3 { margin:21px 0 11px; color:var(--green-900); font-size:20px; }
.principle-row p { margin:0; color:var(--muted); font-size:14px; line-height:1.8; }
.line-icon { width:39px; height:39px; border:1px solid var(--green-500); border-radius:50%; opacity:.9; }
.icon-flask:after { content:""; display:block; width:14px; height:17px; margin:9px auto; border-bottom:1px solid var(--green-500); border-left:1px solid var(--green-500); border-right:1px solid var(--green-500); border-radius:0 0 8px 8px; }
.icon-leaf:after { content:""; display:block; width:16px; height:23px; margin:7px auto; border:1px solid var(--green-500); border-radius:90% 10%; transform:rotate(-10deg); }
.icon-cycle:after { content:"↻"; display:block; color:var(--green-500); font-size:25px; line-height:35px; text-align:center; }

.focus { color:white; background:var(--green-900); }
.section-head { display:flex; align-items:end; justify-content:space-between; gap:40px; }
.section-kicker.light { color:#acd1a5; }
.focus h2,.contact h2 { color:white; }
.section-head > p { width:350px; margin:0 0 10px; color:rgba(255,255,255,.62); font-size:14px; line-height:1.9; }
.focus-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:16px; margin-top:58px; }
.focus-card { position:relative; min-height:332px; padding:30px; border:1px solid rgba(255,255,255,.16); transition:.3s; }
.focus-card:hover,.focus-card.active { background:#296552; transform:translateY(-7px); }
.card-no { color:#b7dab0; font:700 12px "Manrope"; letter-spacing:.14em; }
.focus-icon { height:74px; color:#cbe8c4; font-size:46px; line-height:1; }
.focus-card h3 { margin:10px 0 13px; font-size:21px; }
.focus-card p:not(.card-no) { max-width:245px; margin:0; color:rgba(255,255,255,.67); font-size:14px; line-height:1.8; }
.focus-card a { position:absolute; right:25px; bottom:24px; display:grid; width:36px; height:36px; place-items:center; border:1px solid rgba(255,255,255,.33); border-radius:50%; color:#d1e9ca; }

.network { background:#f7f7f1; }
.network-grid { display:grid; grid-template-columns:.92fr 1.08fr; align-items:center; gap:80px; }
.network-copy { max-width:520px; margin:25px 0 0; color:var(--muted); font-size:15px; line-height:2; }
.country-grid { display:grid; grid-template-columns:repeat(2,1fr); gap:1px; padding:1px; background:var(--line); }
.country-grid article { min-height:112px; padding:24px; background:#fbfcf7; transition:.25s; }
.country-grid article:hover { background:#edf4e9; }
.country-grid b,.country-grid span { display:block; }
.country-grid b { color:var(--green-900); font-size:17px; }
.country-grid span { margin-top:10px; color:var(--muted); font-size:12px; letter-spacing:.03em; }

.research { background:#eef2e9; overflow:hidden; }
.research-grid { display:grid; grid-template-columns:1fr 1fr; align-items:center; gap:100px; }
.research-visual { position:relative; min-height:450px; }
.circle { position:absolute; border:1px solid rgba(55,117,94,.25); border-radius:50%; }
.circle-large { inset:12px 30px 12px 0; }
.circle-small { inset:85px 102px 85px 72px; border-color:rgba(55,117,94,.48); }
.circle-small:after { content:""; position:absolute; top:50%; left:50%; width:9px; height:9px; border-radius:50%; background:#5c9f72; transform:translate(-50%,-50%); box-shadow:0 0 0 17px rgba(92,159,114,.13); }
.research-panel { position:absolute; left:50%; top:50%; width:183px; height:183px; padding:46px 0 0; border-radius:50%; color:white; background:var(--green-900); text-align:center; transform:translate(-50%,-50%); box-shadow:0 14px 30px rgba(17,65,52,.14); }
.research-panel b,.research-panel span,.research-panel small { display:block; }
.research-panel b { font:800 38px/1 "Manrope"; letter-spacing:.05em; }
.research-panel span { margin-top:8px; color:#b4d7ad; font:700 9px "Manrope"; letter-spacing:.35em; }
.research-panel small { margin-top:18px; color:rgba(255,255,255,.66); font-size:11px; letter-spacing:.16em; }
.research-copy > p:not(.section-kicker) { margin:22px 0 27px; color:var(--muted); font-size:15px; line-height:2; }
.research-list { border-top:1px solid var(--line); }
.research-list div { display:flex; gap:22px; padding:16px 0; border-bottom:1px solid var(--line); color:var(--green-900); font-size:14px; font-weight:600; }
.research-list b { color:#6c9d69; font:700 11px "Manrope"; }

.contact { padding:110px 0 116px; color:white; background:linear-gradient(120deg,#174b3e,#0d332b); text-align:center; }
.contact-inner { display:flex; flex-direction:column; align-items:center; }
.contact p:not(.section-kicker) { margin:23px 0 30px; color:rgba(255,255,255,.66); font-size:15px; }
.button-light { background:#d8ebd3; color:var(--green-900); }
.button-light:hover { background:white; transform:translateY(-2px); }
footer { color:white; background:#0a2923; }
.footer-inner { display:flex; align-items:center; justify-content:space-between; min-height:98px; }
.footer-brand { transform:scale(.88); transform-origin:left center; }
.footer-inner p,.footer-inner > a:last-child { color:rgba(255,255,255,.53); font-size:12px; }

@media (max-width: 820px) {
  .container { width:min(100% - 36px, 600px); }
  .section { padding:82px 0; }
  .site-header { background:rgba(13,46,39,.92); }
  .header-inner { height:68px; }
  .brand { width:196px; }
  .header-action { display:none; }
  .lang-toggle { margin-left:auto; }
  .menu-toggle { display:flex; width:32px; padding:0; border:0; background:transparent; flex-direction:column; gap:5px; }
  .menu-toggle span { display:block; width:100%; border-top:2px solid white; }
  .main-nav { position:absolute; top:68px; left:0; display:none; width:100%; padding:18px; background:rgba(13,46,39,.97); flex-direction:column; align-items:flex-start; gap:18px; }
  .main-nav.open { display:flex; }
  .hero { min-height:700px; height:100svh; }
  .hero-image { background-position:62% center; }
  .hero-overlay { background:linear-gradient(90deg,rgba(8,42,35,.92),rgba(12,55,44,.51)); }
  h1 { font-size:55px; }
  .hero-copy { max-width:90%; font-size:15px; }
  .hero-actions { align-items:flex-start; flex-direction:column; gap:14px; margin-top:30px; }
  .button-text { padding:8px 0; }
  .hero-scroll { display:none; }
  .intro-grid,.research-grid { grid-template-columns:1fr; gap:30px; }
  .network-grid { grid-template-columns:1fr; gap:38px; }
  .country-grid article { min-height:94px; padding:18px 16px; }
  .intro-body { padding-top:0; }
  .principle-row { grid-template-columns:1fr; margin-top:55px; }
  .section-head { display:block; }
  .section-head > p { width:auto; margin-top:20px; }
  .focus-grid { grid-template-columns:1fr; margin-top:36px; }
  .focus-card { min-height:246px; }
  .research-grid { gap:16px; }
  .research-visual { min-height:320px; }
  .circle-large { inset:8px 16px; }
  .circle-small { inset:60px 70px; }
  .footer-inner { min-height:145px; padding:25px 0; flex-direction:column; align-items:flex-start; }
}