:root {
  --navy: #163A5F;
  --navy-deep: #0E2740;
  --navy-soft: #2A5078;
  --green: #2F8F5B;
  --green-deep: #1F6B43;
  --green-soft: #E8F5EE;
  --ink: #1A2330;
  --muted: #5A6A7A;
  --line: #E2E8F0;
  --bg: #F7FAFC;
  --white: #FFFFFF;
  --shadow: 0 12px 40px rgba(14, 39, 64, 0.08);
  --radius: 16px;
  --max: 1120px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", "Segoe UI", system-ui, sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.7;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
.container { width: min(100% - 2.5rem, var(--max)); margin-inline: auto; }
.section { padding: 5.5rem 0; }
.section-alt { background: var(--bg); }
.eyebrow {
  display: inline-flex; align-items: center; gap: .5rem;
  color: var(--green); font-weight: 700; font-size: .85rem;
  letter-spacing: .08em; text-transform: uppercase; margin-bottom: .85rem;
}
.eyebrow::before {
  content: ""; width: 1.6rem; height: 2px; background: var(--green);
}
h1,h2,h3 { color: var(--navy); line-height: 1.25; font-weight: 750; }
h1 { font-size: clamp(2rem, 4vw, 3.1rem); }
h2 { font-size: clamp(1.65rem, 3vw, 2.35rem); margin-bottom: 1rem; }
h3 { font-size: 1.15rem; margin-bottom: .5rem; }
.lead { font-size: 1.08rem; color: var(--muted); max-width: 42rem; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  padding: .85rem 1.4rem; border-radius: 999px; border: 0; cursor: pointer;
  font-weight: 700; font-size: .95rem; transition: .2s ease;
}
.btn-primary { background: linear-gradient(135deg, var(--green), var(--green-deep)); color: white; box-shadow: 0 8px 24px rgba(47,143,91,.28); }
.btn-primary:hover { transform: translateY(-1px); filter: brightness(1.05); }
.btn-ghost { background: rgba(255,255,255,.12); color: white; border: 1px solid rgba(255,255,255,.35); backdrop-filter: blur(6px); }
.btn-ghost:hover { background: rgba(255,255,255,.2); }
.btn-outline { background: white; color: var(--navy); border: 1px solid var(--line); }
.btn-outline:hover { border-color: var(--green); color: var(--green); }

/* Nav */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.92); backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(226,232,240,.9);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  min-height: 74px; gap: 1rem;
}
.brand { display: flex; align-items: center; gap: .75rem; }
.brand img { height: 52px; width: auto; }
.nav-links { display: flex; align-items: center; gap: 1.35rem; list-style: none; }
.nav-links a { color: var(--navy-soft); font-weight: 600; font-size: .92rem; }
.nav-links a:hover { color: var(--green); }
.lang-switch {
  display: inline-flex; background: var(--bg); border: 1px solid var(--line);
  border-radius: 999px; padding: 3px; gap: 2px;
}
.lang-switch button {
  border: 0; background: transparent; padding: .35rem .7rem; border-radius: 999px;
  cursor: pointer; font-weight: 700; color: var(--muted); font-size: .85rem;
}
.lang-switch button.active { background: var(--navy); color: white; }
.nav-toggle { display: none; background: none; border: 0; font-size: 1.5rem; color: var(--navy); }

/* Hero */
.hero {
  position: relative; min-height: min(88vh, 760px);
  display: grid; align-items: center;
  color: white; overflow: hidden;
  background: var(--navy-deep);
}
.hero-media {
  position: absolute; inset: 0;
  background:
    linear-gradient(110deg, rgba(14,39,64,.88) 0%, rgba(14,39,64,.62) 48%, rgba(31,107,67,.45) 100%),
    url("../assets/hero-warehouse.jpg") center/cover no-repeat;
}
.hero-content { position: relative; z-index: 1; padding: 5rem 0 4rem; }
.hero-badges { display: flex; flex-wrap: wrap; gap: .6rem; margin: 1.25rem 0 1.75rem; }
.badge {
  background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.22);
  padding: .4rem .8rem; border-radius: 999px; font-size: .82rem; font-weight: 600;
}
.hero h1 { color: white; max-width: 16ch; }
.hero .lead { color: rgba(255,255,255,.86); margin-top: 1rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 2rem; }
.hero-stats {
  display: grid; grid-template-columns: repeat(3, minmax(0,1fr));
  gap: 1rem; margin-top: 3rem; max-width: 560px;
}
.stat {
  background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.14);
  border-radius: 14px; padding: 1rem 1.1rem;
}
.stat strong { display: block; font-size: 1.35rem; color: #B7F0CC; }
.stat span { font-size: .82rem; color: rgba(255,255,255,.75); }

/* About */
.about-grid {
  display: grid; grid-template-columns: 1.05fr .95fr; gap: 2.5rem; align-items: center;
}
.about-card {
  background: white; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow);
}
.about-card img { width: 100%; height: 320px; object-fit: cover; }
.about-points { display: grid; gap: .9rem; margin-top: 1.5rem; }
.point {
  display: grid; grid-template-columns: auto 1fr; gap: .85rem;
  padding: 1rem 1.1rem; background: white; border: 1px solid var(--line); border-radius: 14px;
}
.point-icon {
  width: 42px; height: 42px; border-radius: 12px;
  display: grid; place-items: center; font-weight: 800; color: white;
  background: linear-gradient(135deg, var(--navy), var(--green));
}

/* Brands */
.brand-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.25rem; margin-top: 2rem; }
.brand-panel {
  background: white; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.6rem; box-shadow: var(--shadow); position: relative; overflow: hidden;
}
.brand-panel::before {
  content: ""; position: absolute; inset: 0 auto 0 0; width: 5px;
  background: linear-gradient(180deg, var(--navy), var(--green));
}
.brand-panel h3 { font-size: 1.35rem; }
.tag-row { display: flex; flex-wrap: wrap; gap: .45rem; margin-top: 1rem; }
.tag {
  background: var(--green-soft); color: var(--green-deep);
  padding: .28rem .65rem; border-radius: 999px; font-size: .78rem; font-weight: 700;
}
.industries {
  display: flex; flex-wrap: wrap; gap: .6rem; margin-top: 1.75rem;
}
.industries span {
  background: rgba(22,58,95,.06); color: var(--navy); border: 1px solid var(--line);
  padding: .45rem .85rem; border-radius: 10px; font-size: .86rem; font-weight: 600;
}


/* Products */
.product-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-top: 2rem;
}
.product-card {
  background: white; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.35rem 1.25rem; box-shadow: var(--shadow); min-height: 168px;
  transition: .2s ease;
}
.product-card:hover { transform: translateY(-3px); border-color: #c9e8d6; }
.product-card h3 { font-size: 1.08rem; margin-bottom: .55rem; }
.product-card p { color: var(--muted); font-size: .92rem; margin: 0; }

/* Services */
.service-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; margin-top: 2rem;
}
.service-card {
  background: white; border-radius: var(--radius); padding: 1.4rem 1.25rem;
  border: 1px solid var(--line); box-shadow: var(--shadow);
  min-height: 210px; transition: .2s ease;
}
.service-card:hover { transform: translateY(-4px); border-color: #c9e8d6; }
.service-num {
  width: 36px; height: 36px; border-radius: 10px; margin-bottom: 1rem;
  display: grid; place-items: center; font-weight: 800; color: white; font-size: .85rem;
  background: var(--navy);
}
.service-card:nth-child(2) .service-num { background: var(--green); }
.service-card:nth-child(3) .service-num { background: var(--navy-soft); }
.service-card:nth-child(4) .service-num { background: var(--green-deep); }
.service-card p { color: var(--muted); font-size: .92rem; }

/* Cases */
.case-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-top: 2rem;
}
.case-card {
  background: white; border: 1px solid var(--line); border-radius: 14px;
  padding: 1.2rem 1.15rem; min-height: 150px;
}
.case-card .meta {
  display: inline-block; font-size: .75rem; font-weight: 700; color: var(--green);
  background: var(--green-soft); padding: .2rem .55rem; border-radius: 999px; margin-bottom: .7rem;
}
.case-card h3 { font-size: 1.02rem; margin-bottom: .35rem; }
.case-card h3 .en { font-size: 0.92rem; line-height: 1.35; display: inline-block; }
.case-card p { color: var(--muted); font-size: .88rem; }

/* Contact */
.contact-wrap {
  display: grid; grid-template-columns: .9fr 1.1fr; gap: 1.5rem; margin-top: 1.5rem;
}
.contact-info {
  background: linear-gradient(160deg, var(--navy-deep), var(--navy) 55%, #1f6b43);
  color: white; border-radius: var(--radius); padding: 2rem 1.6rem;
}
.contact-info h3 { color: white; margin-bottom: 1rem; }
.contact-info p { color: rgba(255,255,255,.82); margin-bottom: .85rem; }
.contact-info a { color: #B7F0CC; font-weight: 700; }
.contact-list { list-style: none; display: grid; gap: .85rem; margin-top: 1.5rem; }
.contact-list li {
  background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.12);
  border-radius: 12px; padding: .9rem 1rem;
}
.contact-list small { display: block; opacity: .7; font-size: .75rem; }
.form-card {
  background: white; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.6rem; box-shadow: var(--shadow);
}
.form-grid { display: grid; gap: .9rem; }
label { display: grid; gap: .35rem; font-weight: 650; color: var(--navy); font-size: .9rem; }
input, textarea {
  width: 100%; border: 1px solid var(--line); border-radius: 12px;
  padding: .85rem 1rem; font: inherit; background: #FBFCFD; color: var(--ink);
}
input:focus, textarea:focus { outline: 2px solid rgba(47,143,91,.35); border-color: var(--green); }
.hp { position: absolute; left: -9999px; opacity: 0; height: 0; width: 0; overflow: hidden; }
.form-row { display: grid; grid-template-columns: 1fr auto; gap: .8rem; align-items: end; }
.form-note { color: var(--muted); font-size: .82rem; margin-top: .4rem; }
.form-msg {
  display: none; margin-top: .9rem; padding: .85rem 1rem; border-radius: 12px; font-weight: 600;
}
.form-msg.ok { display: block; background: var(--green-soft); color: var(--green-deep); }
.form-msg.err { display: block; background: #FEECEC; color: #B42318; }

/* Footer */
.site-footer {
  background: var(--navy-deep); color: rgba(255,255,255,.75); padding: 2.2rem 0;
}
.footer-row {
  display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; align-items: center;
}
.footer-brand { display: flex; align-items: center; gap: .75rem; color: white; font-weight: 700; }
.footer-brand img { height: 42px; filter: brightness(1.05); }

/* Lang visibility */
[data-lang="en"] .zh { display: none !important; }
[data-lang="zh"] .en { display: none !important; }

@media (max-width: 960px) {
  .about-grid, .contact-wrap, .brand-grid { grid-template-columns: 1fr; }
  .service-grid, .case-grid, .product-grid { grid-template-columns: 1fr 1fr; }
  .nav-links { display: none; }
  .nav-links.open {
    display: flex; flex-direction: column; position: absolute; top: 74px; left: 0; right: 0;
    background: white; padding: 1rem 1.25rem 1.4rem; border-bottom: 1px solid var(--line);
    align-items: flex-start;
  }
  .nav-toggle { display: block; }
  .nav { position: relative; }
}
@media (max-width: 640px) {
  .service-grid, .case-grid, .product-grid, .hero-stats { grid-template-columns: 1fr; }
  .brand img { height: 44px; }
}


/* Brand logos — horizontal; min-width:0 beats global img max-width:100% flex bug */
.brand-logos {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex !important;
  -webkit-box-orient: horizontal;
  -webkit-box-direction: normal;
  -ms-flex-direction: row;
  flex-direction: row !important;
  -ms-flex-wrap: nowrap;
  flex-wrap: nowrap !important;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center !important;
  -webkit-box-pack: start;
  -ms-flex-pack: start;
  justify-content: flex-start !important;
  gap: 1.5rem 2rem;
  margin: 0.35rem 0 0.75rem;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}
.brand-logos > .brand-logo,
.brand-logos > img.brand-logo {
  display: inline-block !important;
  object-fit: contain !important;
  height: auto !important;
  min-width: 0 !important;
  max-width: 42% !important;
  -webkit-box-flex: 0;
  -ms-flex: 0 1 auto;
  flex: 0 1 auto !important;
  vertical-align: middle;
}
.brand-logo-loctite {
  width: 180px !important;
  max-height: 52px !important;
}
.brand-logo-wacker {
  width: 190px !important;
  max-height: 48px !important;
}
.brand-logo-sep {
  width: 1px !important;
  height: 2.2rem !important;
  background: var(--line);
  display: inline-block !important;
  -ms-flex: 0 0 auto;
  flex: 0 0 auto !important;
  -ms-flex-item-align: center;
  align-self: center;
  margin: 0 0.25rem;
}
.brand-logos-caption {
  color: var(--muted); font-size: 0.9rem; font-weight: 650; margin-bottom: 1rem;
}
@media (max-width: 640px) {
  .brand-logos { gap: 0.75rem 1rem; }
  .brand-logo-loctite { width: 130px !important; max-height: 40px !important; }
  .brand-logo-wacker { width: 140px !important; max-height: 36px !important; }
  .brand-logos > .brand-logo { max-width: 44% !important; }
}