:root{
  --green:#0b6b4f;
  --green-dark:#08523d;
  --green-light:#e8f4ef;
  --teal:#12a594;
  --ink:#0f1f1a;
  --ink-soft:#3d514a;
  --muted:#6b7f78;
  --line:#e3ebe7;
  --bg:#ffffff;
  --bg-soft:#f4f9f7;
  --bg-dark:#0a2b21;
  --shadow:0 10px 30px rgba(11,107,79,.08);
  --shadow-lg:0 24px 60px rgba(11,107,79,.14);
  --radius:16px;
  --radius-sm:10px;
  --maxw:1200px;
  --header-h:76px;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 12px)}
body{
  font-family:"Inter","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.6;
  -webkit-font-smoothing:antialiased;font-size:16px;
}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
ul{list-style:none}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-weight:600;font-size:15px;padding:11px 22px;border-radius:50px;
  cursor:pointer;border:2px solid transparent;transition:.25s;white-space:nowrap;
}
.btn-primary{background:var(--green);color:#fff}
.btn-primary:hover{background:var(--green-dark);transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.btn-ghost{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.35);backdrop-filter:blur(6px)}
.btn-ghost:hover{background:rgba(255,255,255,.22)}
.btn-outline{background:transparent;color:var(--green);border-color:var(--green)}
.btn-outline:hover{background:var(--green);color:#fff}
.btn-light{background:#fff;color:var(--green-dark)}
.btn-light:hover{background:#eaf4f0}
.btn-lg{padding:15px 30px;font-size:16px}
.btn-block{width:100%}

/* ---------- Header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;height:var(--header-h);z-index:100;
  background:rgba(255,255,255,.86);backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;transition:.3s;
}
.site-header.scrolled{border-color:var(--line);box-shadow:0 4px 20px rgba(15,31,26,.05)}
.header-inner{max-width:var(--maxw);margin:0 auto;height:100%;display:flex;align-items:center;gap:28px;padding:0 24px}
.logo{font-weight:800;font-size:22px;letter-spacing:-.5px;color:var(--ink)}
.logo span{color:var(--green)}
.logo-dark{color:#fff}
.main-nav{display:flex;gap:4px;margin-left:auto}
.main-nav a{font-size:14.5px;font-weight:500;color:var(--ink-soft);padding:9px 14px;border-radius:8px;transition:.2s}
.main-nav a:hover{color:var(--green);background:var(--green-light)}
.header-right{display:flex;align-items:center;gap:14px}
.header-cta{display:inline-flex}

/* Lang switcher */
.lang-switcher{position:relative}
.lang-btn{
  display:flex;align-items:center;gap:7px;background:#fff;border:1px solid var(--line);
  padding:8px 14px;border-radius:50px;cursor:pointer;font-size:14px;font-weight:500;color:var(--ink);
  transition:.2s;
}
.lang-btn:hover{border-color:var(--green);color:var(--green)}
.lang-btn .flag{font-size:15px}
.lang-btn .chevron{transition:.25s}
.lang-switcher.open .chevron{transform:rotate(180deg)}
.lang-menu{
  position:absolute;right:0;top:calc(100% + 8px);min-width:200px;background:#fff;
  border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow-lg);
  padding:6px;opacity:0;visibility:hidden;transform:translateY(-8px);transition:.22s;max-height:360px;overflow:auto;
}
.lang-switcher.open .lang-menu{opacity:1;visibility:visible;transform:translateY(0)}
.lang-menu li{
  display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:8px;cursor:pointer;font-size:14px;
  transition:.15s;color:var(--ink-soft);
}
.lang-menu li:hover{background:var(--green-light);color:var(--green)}
.lang-menu li.active{background:var(--green-light);color:var(--green);font-weight:600}
.lang-menu .flag{font-size:15px}

/* Nav toggle */
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px}
.nav-toggle span{width:24px;height:2px;background:var(--ink);border-radius:2px;transition:.3s}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- Hero ---------- */
.hero{position:relative;padding:calc(var(--header-h) + 70px) 24px 80px;color:#fff;overflow:hidden}
.hero-bg{
  position:absolute;inset:0;z-index:-1;
  background:
    radial-gradient(1200px 600px at 80% -10%,rgba(18,165,148,.55),transparent 60%),
    radial-gradient(900px 500px at 10% 110%,rgba(11,107,79,.7),transparent 55%),
    linear-gradient(140deg,#06382b 0%,#0b6b4f 55%,#12a594 100%);
}
.hero-bg::after{
  content:"";position:absolute;inset:0;opacity:.35;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:48px 48px;
}
.hero-inner{max-width:var(--maxw);margin:0 auto;position:relative}
.hero-badge{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:.4px;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);
  padding:7px 16px;border-radius:50px;margin-bottom:22px;backdrop-filter:blur(6px);
}
.hero-title{font-size:clamp(34px,5.4vw,60px);font-weight:800;line-height:1.12;letter-spacing:-1px;margin-bottom:22px}
.hero-sub{font-size:clamp(16px,1.8vw,20px);color:rgba(255,255,255,.85);max-width:640px;margin-bottom:32px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:52px}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;max-width:820px}
.stat{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);border-radius:var(--radius);padding:20px;backdrop-filter:blur(6px)}
.stat-num{font-size:30px;font-weight:800;color:#fff}
.stat-label{font-size:13px;color:rgba(255,255,255,.75);margin-top:3px}

/* ---------- Sections ---------- */
.section{padding:88px 24px}
.section-inner{max-width:var(--maxw);margin:0 auto}
.section-head{max-width:720px;margin-bottom:52px}
.eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:1.2px;text-transform:uppercase;color:var(--teal);margin-bottom:12px}
.section-head h2{font-size:clamp(28px,3.6vw,42px);font-weight:800;letter-spacing:-.6px;line-height:1.15;margin-bottom:14px}
.section-head p{color:var(--muted);font-size:17px}

/* About */
.about{background:var(--bg)}
.about-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.about-card{background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius);padding:34px 30px;transition:.3s}
.about-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:transparent}
.icon-wrap{width:56px;height:56px;border-radius:14px;background:var(--green-light);color:var(--green);display:flex;align-items:center;justify-content:center;margin-bottom:20px}
.icon-wrap svg{width:28px;height:28px}
.about-card h3{font-size:19px;font-weight:700;margin-bottom:10px}
.about-card p{color:var(--muted);font-size:15px}

/* Products */
.products{background:var(--bg-soft)}
.product-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.product-card{background:#fff;border-radius:20px;overflow:hidden;box-shadow:var(--shadow);transition:.3s;display:flex;flex-direction:column}
.product-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.product-visual{height:260px;width:100%;object-fit:cover;display:block}
.product-body{padding:30px;display:flex;flex-direction:column;flex:1}
.product-tag{display:inline-block;font-size:12px;font-weight:600;color:var(--teal);background:var(--green-light);padding:4px 12px;border-radius:50px;margin-bottom:14px;align-self:flex-start}
.product-body h3{font-size:23px;font-weight:800;margin-bottom:10px}
.product-body>p{color:var(--muted);font-size:15px;margin-bottom:20px}
.spec-table{width:100%;border-collapse:collapse;margin-bottom:24px;font-size:14px}
.spec-table th{text-align:left;color:var(--muted);font-weight:500;padding:7px 0;border-bottom:1px solid var(--line);width:44%}
.spec-table td{text-align:right;font-weight:600;color:var(--ink);padding:7px 0;border-bottom:1px solid var(--line)}
.product-body .btn{margin-top:auto;align-self:flex-start}

/* Solutions */
.solutions{background:var(--bg)}
.solution-list{display:flex;flex-direction:column;gap:18px}
.solution-item{
  display:flex;gap:30px;background:var(--bg-soft);border:1px solid var(--line);
  border-radius:var(--radius);padding:32px 34px;transition:.3s;align-items:flex-start;
}
.solution-item:hover{border-color:var(--green);box-shadow:var(--shadow)}
.solution-num{font-size:40px;font-weight:800;color:var(--green-light);line-height:1;min-width:70px;letter-spacing:-1px}
.solution-content h3{font-size:21px;font-weight:700;margin-bottom:8px}
.solution-content p{color:var(--muted);font-size:15px;margin-bottom:16px}
.chip-row{display:flex;gap:8px;flex-wrap:wrap}
.chip{font-size:12.5px;font-weight:600;color:var(--green-dark);background:#fff;border:1px solid var(--line);padding:5px 13px;border-radius:50px}

/* Cases */
.cases{background:var(--bg-soft)}

/* Google Maps Service promo */
.gms-promo{background:var(--bg)}
.gms-banner{
  background:linear-gradient(135deg,#0a2b21 0%,#0b6b4f 60%,#12a594 100%);
  border-radius:24px;padding:56px;display:grid;grid-template-columns:1.4fr 1fr;gap:40px;align-items:center;
  color:#fff;box-shadow:var(--shadow-lg);position:relative;overflow:hidden;
}
.gms-banner::before{
  content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(127,224,200,.25),transparent 70%);
}
.gms-badge{display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.5px;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.3);padding:6px 15px;border-radius:50px;margin-bottom:18px;backdrop-filter:blur(6px)}
.gms-banner-text h2{font-size:clamp(26px,3.2vw,38px);font-weight:800;line-height:1.18;margin-bottom:14px;letter-spacing:-.5px}
.gms-banner-text>p{color:rgba(255,255,255,.85);font-size:16px;max-width:540px;margin-bottom:26px}
.gms-actions{display:flex;gap:14px;flex-wrap:wrap}
.gms-banner-visual{position:relative;display:flex;flex-direction:column;gap:14px;justify-content:center;min-height:240px}
.gms-pin{position:absolute;top:-10px;right:30px;color:#7fe0c8;opacity:.5}
.gms-pin svg{width:54px;height:54px}
.gms-keyword{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);padding:13px 18px;border-radius:12px;font-size:14px;font-weight:500;backdrop-filter:blur(6px);position:relative;z-index:1}
.gms-keyword::before{content:"🔍";margin-right:9px;font-size:13px}
@media(max-width:860px){.gms-banner{grid-template-columns:1fr;padding:36px 28px}}

.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.case-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:.3s}
.case-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.case-img{height:170px;position:relative}
.case-img.c1{background:linear-gradient(140deg,#1d4d3b,#2f8f6d)}
.case-img.c2{background:linear-gradient(140deg,#123f56,#1c6f7a)}
.case-img.c3{background:linear-gradient(140deg,#4a3a1d,#8a7a3a)}
.case-body{padding:24px}
.case-loc{font-size:12px;font-weight:600;color:var(--teal);text-transform:uppercase;letter-spacing:.5px}
.case-body h3{font-size:18px;font-weight:700;margin:8px 0}
.case-body p{color:var(--muted);font-size:14.5px}

/* Insights */
.insights{background:var(--bg-soft)}
.insight-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.insight-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:.3s;display:flex;flex-direction:column}
.insight-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.insight-img{height:180px;position:relative}
.insight-img.i1{background:linear-gradient(140deg,#0b3d2e,#1f8a6d)}
.insight-img.i2{background:linear-gradient(140deg,#133d56,#1d7a8a)}
.insight-img.i3{background:linear-gradient(140deg,#3d2e0b,#8a7a1d)}
.insight-img.i4{background:linear-gradient(140deg,#2e0b3d,#7a1d8a)}
.insight-body{padding:24px;display:flex;flex-direction:column;flex:1}
.insight-meta{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.insight-cat{font-size:11.5px;font-weight:700;color:var(--teal);background:var(--green-light);padding:3px 11px;border-radius:50px;text-transform:uppercase;letter-spacing:.4px}
.insight-date{font-size:12.5px;color:var(--muted)}
.insight-body h3{font-size:17px;font-weight:700;line-height:1.35;margin-bottom:9px}
.insight-body p{color:var(--muted);font-size:14px;margin-bottom:0}
.insight-more{text-align:center;margin-top:34px}

/* Downloads */
.downloads{background:var(--bg)}
.download-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.download-card{display:flex;align-items:center;gap:16px;background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius);padding:24px;transition:.25s}
.download-card:hover{border-color:var(--green);box-shadow:var(--shadow);transform:translateY(-3px)}
.dl-icon{width:50px;height:50px;flex-shrink:0;border-radius:12px;background:var(--green-light);color:var(--green);display:flex;align-items:center;justify-content:center}
.dl-icon svg{width:24px;height:24px}
.dl-text h3{font-size:15.5px;font-weight:700;margin-bottom:3px}
.dl-text p{font-size:13px;color:var(--muted)}

/* Contact */
.contact{background:var(--bg-soft)}
.contact-box{display:grid;grid-template-columns:1fr 1fr;background:var(--green-dark);border-radius:24px;overflow:hidden;box-shadow:var(--shadow-lg)}
.contact-info{padding:52px;color:#fff}
.contact-info .eyebrow{color:#7fe0c8}
.contact-info h2{font-size:clamp(26px,3vw,36px);font-weight:800;line-height:1.2;margin-bottom:14px}
.contact-info>p{color:rgba(255,255,255,.8);margin-bottom:28px}
.contact-x{margin-bottom:30px}
.contact-x svg{flex-shrink:0}
.contact-hint{margin-top:26px;padding:16px 20px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);border-radius:12px;font-size:14px;color:rgba(255,255,255,.82)}
.contact-meta{display:flex;flex-direction:column;gap:16px}
.meta-item span{display:block;font-size:13px;color:rgba(255,255,255,.6);margin-bottom:2px}
.meta-item strong{font-size:16px;font-weight:600}
.contact-form{background:#fff;padding:52px;display:flex;flex-direction:column;gap:16px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.contact-form input,.contact-form select,.contact-form textarea{
  width:100%;padding:14px 16px;border:1.5px solid var(--line);border-radius:12px;font-size:15px;
  font-family:inherit;color:var(--ink);background:#fff;transition:.2s;resize:vertical;
}
.contact-form input:focus,.contact-form select:focus,.contact-form textarea:focus{outline:none;border-color:var(--green);box-shadow:0 0 0 3px rgba(11,107,79,.12)}
.contact-form select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M2 4l4 4 4-4' stroke='%236b7f78' stroke-width='1.6' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 16px center}
.contact-form select:invalid{color:var(--muted)}

/* Footer */
.site-footer{background:var(--bg-dark);color:rgba(255,255,255,.7);padding:64px 24px 0}
.footer-inner{max-width:var(--maxw);margin:0 auto;display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr 1fr 1fr;gap:24px;padding-bottom:48px}
.footer-brand p{font-size:14.5px;margin-top:14px;max-width:260px}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px}
.footer-col a{display:block;font-size:14px;padding:6px 0;transition:.2s}
.footer-col a:hover{color:#7fe0c8}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:22px 24px;text-align:center;font-size:13px;color:rgba(255,255,255,.45)}

/* Reveal animation */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease}
.reveal.visible{opacity:1;transform:translateY(0)}

/* Toast */
.toast{position:fixed;bottom:28px;left:50%;transform:translateX(-50%) translateY(80px);background:var(--ink);color:#fff;padding:14px 26px;border-radius:50px;font-size:14.5px;font-weight:500;box-shadow:var(--shadow-lg);transition:.35s;z-index:200;opacity:0}
.toast.show{transform:translateX(-50%) translateY(0);opacity:1}

/* ---------- Responsive ---------- */
@media(max-width:960px){
  .about-grid,.case-grid,.download-grid{grid-template-columns:repeat(2,1fr)}
  .product-grid{grid-template-columns:1fr}
  .contact-box{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr 1fr}
  .insight-grid{grid-template-columns:1fr}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .main-nav{
    position:fixed;top:var(--header-h);left:0;right:0;background:#fff;flex-direction:column;
    padding:20px 24px;gap:4px;box-shadow:var(--shadow-lg);border-bottom:1px solid var(--line);
    transform:translateY(-120%);transition:.3s;margin-left:0;
  }
  .main-nav.open{transform:translateY(0)}
  .main-nav a{padding:13px 14px;font-size:16px}
  .nav-toggle{display:flex}
  .header-cta{display:none}
}
@media(max-width:600px){
  .about-grid,.case-grid,.download-grid,.footer-inner{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .section{padding:64px 20px}
  .contact-info,.contact-form{padding:36px 26px}
  .solution-item{flex-direction:column;gap:16px}
}