:root {
  --ink: #111319;
  --deep: #171a22;
  --panel: #f7f5ef;
  --paper: #ffffff;
  --muted: #6b7280;
  --line: #ded8c9;
  --gold: #b88942;
  --gold-dark: #8a612d;
  --blue: #2f6f88;
  --jade: #2f7d68;
  --danger: #a35042;
  --shadow: 0 18px 50px rgba(16, 19, 25, .12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", Arial, sans-serif;
  color: var(--ink);
  background: #f3f0e8;
  line-height: 1.7;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }

.site-header {
  position: fixed;
  z-index: 20;
  inset: 0 0 auto 0;
  background: rgba(17, 19, 25, .82);
  color: #fff;
  border-bottom: 1px solid rgba(255,255,255,.12);
  backdrop-filter: blur(16px);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 24px; }
.brand { display: flex; flex-direction: column; line-height: 1.2; min-width: 198px; }
.brand strong { font-size: 18px; letter-spacing: 0; }
.brand span { color: rgba(255,255,255,.66); font-size: 12px; margin-top: 6px; }
.nav { display: flex; align-items: center; gap: 24px; font-size: 14px; color: rgba(255,255,255,.84); }
.nav a:hover { color: #fff; }
.header-actions { display: flex; align-items: center; gap: 12px; }
.phone-link { color: #fff; font-weight: 700; white-space: nowrap; }
.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(255,255,255,.22);
  background: transparent;
  color: #fff;
  border-radius: 6px;
  font-size: 22px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 6px;
  border: 1px solid transparent;
  font-weight: 700;
  line-height: 1.2;
}
.btn-primary { background: var(--gold); color: #121212; }
.btn-primary:hover { background: #c99a52; }
.btn-outline { border-color: rgba(255,255,255,.32); color: #fff; }
.btn-dark { background: var(--ink); color: #fff; }

.hero {
  min-height: 720px;
  color: #fff;
  padding-top: 72px;
  background:
    linear-gradient(90deg, rgba(13,14,18,.93) 0%, rgba(13,14,18,.82) 34%, rgba(13,14,18,.28) 68%, rgba(13,14,18,.62) 100%),
    url("../images/hero-production.png") center / cover no-repeat;
}
.hero-inner { min-height: 648px; display: grid; align-items: center; padding: 56px 0 64px; }
.eyebrow { color: #d8b070; font-size: 14px; font-weight: 700; letter-spacing: 0; text-transform: uppercase; }
.hero h1 {
  width: min(780px, 100%);
  margin: 18px 0 20px;
  font-size: clamp(38px, 6vw, 72px);
  line-height: 1.08;
  letter-spacing: 0;
}
.hero .lead { width: min(690px, 100%); color: rgba(255,255,255,.82); font-size: 19px; margin: 0 0 30px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  width: min(900px, 100%);
  margin-top: 58px;
  border: 1px solid rgba(255,255,255,.13);
  background: rgba(255,255,255,.1);
}
.metric { padding: 18px; background: rgba(16,18,24,.72); }
.metric strong { display: block; font-size: 24px; color: #fff; }
.metric span { color: rgba(255,255,255,.7); font-size: 13px; }

section { padding: 82px 0; }
.section-dark { background: var(--deep); color: #fff; }
.section-soft { background: var(--panel); }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 28px; margin-bottom: 34px; }
.section-head h2 { font-size: clamp(28px, 4vw, 44px); line-height: 1.18; margin: 0; letter-spacing: 0; }
.section-head p { margin: 0; max-width: 560px; color: var(--muted); }
.section-dark .section-head p { color: rgba(255,255,255,.68); }

.service-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.service-card {
  min-height: 252px;
  padding: 24px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 10px 28px rgba(17,19,25,.06);
}
.service-card b { display: block; color: var(--gold-dark); margin-bottom: 10px; font-size: 17px; }
.service-card p { color: #555b66; margin: 0; font-size: 14px; }
.service-num { font-size: 13px; color: #9b8b6b; margin-bottom: 22px; }

.industries { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 12px; }
.industry { padding: 15px 14px; border: 1px solid rgba(255,255,255,.18); border-radius: 6px; color: rgba(255,255,255,.86); background: rgba(255,255,255,.04); }

.process { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.process-step { min-height: 205px; padding: 24px 20px; background: #fff; }
.process-step span { color: var(--gold); font-weight: 800; }
.process-step h3 { margin: 18px 0 8px; font-size: 18px; }
.process-step p { margin: 0; color: #606672; font-size: 14px; }

.package-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.package { padding: 26px; border-radius: 8px; background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow); }
.package h3 { margin: 0 0 8px; font-size: 22px; }
.package p { margin: 0 0 18px; color: var(--muted); }
.package .scope { border-top: 1px solid var(--line); padding-top: 18px; color: #3c424c; font-size: 14px; }

.region-layout { display: grid; grid-template-columns: 1.1fr .9fr; gap: 34px; align-items: start; }
.region-copy h2 { font-size: clamp(28px, 4vw, 42px); line-height: 1.2; margin: 0 0 18px; }
.region-copy p { color: #505762; margin: 0 0 16px; }
.area-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.area-link { padding: 13px 14px; background: #fff; border: 1px solid var(--line); border-radius: 6px; color: #333943; }
.area-link:hover { border-color: var(--gold); color: var(--gold-dark); }

.seo-content { padding-top: 0; }
.seo-panel {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 32px;
  box-shadow: var(--shadow);
}
.seo-panel h2, .seo-panel h3 { line-height: 1.25; margin-top: 0; }
.seo-panel p, .seo-panel li { color: #4f5661; }
.seo-panel ul { padding-left: 20px; }
.keyword-cloud { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
.keyword-cloud span {
  border: 1px solid var(--line);
  background: #faf8f1;
  color: #5b4931;
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 13px;
}

.contact-band { background: var(--ink); color: #fff; padding: 64px 0; }
.contact-inner { display: grid; grid-template-columns: 1fr auto; gap: 28px; align-items: center; }
.contact-inner h2 { font-size: clamp(28px, 4vw, 42px); margin: 0 0 12px; }
.contact-inner p { margin: 0; color: rgba(255,255,255,.72); }
.contact-list { display: grid; gap: 8px; margin-top: 20px; color: rgba(255,255,255,.86); }
.contact-actions { display: grid; justify-items: center; gap: 14px; }
.qr-card {
  width: 172px;
  padding: 12px;
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  box-shadow: 0 16px 38px rgba(0,0,0,.22);
}
.qr-card img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: contain;
  border-radius: 4px;
}
.qr-card span {
  display: block;
  margin-top: 8px;
  text-align: center;
  color: #343842;
  font-size: 13px;
  line-height: 1.35;
}
.aside-qr {
  margin: 18px 0 24px;
  width: 150px;
  box-shadow: 0 12px 30px rgba(17,19,25,.12);
}

.footer { background: #0c0d11; color: rgba(255,255,255,.66); padding: 34px 0; font-size: 14px; }
.footer-inner { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.breadcrumb { padding: 104px 0 22px; color: rgba(255,255,255,.72); font-size: 14px; }
.page-hero { min-height: 520px; color: #fff; background:
  linear-gradient(90deg, rgba(13,14,18,.94), rgba(13,14,18,.74), rgba(13,14,18,.42)),
  url("../images/hero-production.png") center / cover no-repeat;
}
.page-hero h1 { font-size: clamp(34px, 6vw, 64px); line-height: 1.1; margin: 18px 0; max-width: 900px; }
.page-hero p { max-width: 760px; color: rgba(255,255,255,.8); font-size: 18px; }

@media (max-width: 980px) {
  .nav {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(17, 19, 25, .98);
    border-top: 1px solid rgba(255,255,255,.12);
  }
  .nav.is-open { display: flex; }
  .nav a { padding: 14px 20px; border-bottom: 1px solid rgba(255,255,255,.08); }
  .menu-toggle { display: inline-grid; place-items: center; }
  .header-actions .btn { display: none; }
  .service-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .industries { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .process { grid-template-columns: 1fr; }
  .package-grid, .region-layout { grid-template-columns: 1fr; }
  .hero-metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .contact-inner { grid-template-columns: 1fr; }
  .contact-actions { justify-items: start; }
}

@media (max-width: 640px) {
  .container { width: min(100% - 28px, 1180px); }
  .header-inner { height: 64px; }
  .brand strong { font-size: 15px; }
  .brand span { display: none; }
  .phone-link { display: none; }
  .nav { top: 64px; }
  .hero { min-height: auto; padding-top: 64px; background-position: 62% center; }
  .hero-inner { min-height: 620px; padding: 42px 0 48px; }
  .hero .lead { font-size: 16px; }
  .hero-actions .btn { width: 100%; }
  .hero-metrics { grid-template-columns: 1fr 1fr; margin-top: 34px; }
  .metric { padding: 14px; }
  section { padding: 58px 0; }
  .section-head { display: block; }
  .section-head p { margin-top: 12px; }
  .service-grid, .area-grid { grid-template-columns: 1fr; }
  .service-card { min-height: auto; }
  .industries { grid-template-columns: 1fr; }
  .seo-panel { padding: 22px; }
  .qr-card { width: 158px; }
  .page-hero { min-height: 500px; }
  .breadcrumb { padding-top: 92px; }
}