:root {
  --orange: #ec9540;
  --orange-dark: #b96916;
  --orange-pale: #fff1e4;
  --ink: #101820;
  --ink-2: #263340;
  --muted: #627080;
  --line: #d9dfe5;
  --surface: #f6f8fa;
  --white: #fff;
  --max: 1240px;
  --shadow: 0 24px 70px rgba(16, 24, 32, .12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
body.menu-open { overflow: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
.container { width: min(calc(100% - 48px), var(--max)); margin-inline: auto; }
.eyebrow {
  margin: 0 0 16px;
  color: var(--orange-dark);
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .14em;
  text-transform: uppercase;
}
.eyebrow.light { color: #ffd0a6; }
.display {
  margin: 0;
  font-size: clamp(2.8rem, 6vw, 6.5rem);
  line-height: .98;
  letter-spacing: -.055em;
}
.section-title {
  margin: 0;
  max-width: 880px;
  font-size: clamp(2rem, 4vw, 4rem);
  line-height: 1.08;
  letter-spacing: -.04em;
}
.lead { color: var(--muted); font-size: clamp(1.05rem, 1.7vw, 1.32rem); line-height: 1.8; }
.muted { color: var(--muted); }

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  border-bottom: 1px solid rgba(255,255,255,.14);
  background: rgba(16, 24, 32, .78);
  backdrop-filter: blur(18px);
  color: var(--white);
  transition: background .25s ease, box-shadow .25s ease;
}
.site-header.scrolled { background: rgba(16, 24, 32, .96); box-shadow: 0 8px 30px rgba(0,0,0,.14); }
.nav-wrap { height: 82px; display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.brand { display: flex; align-items: center; flex: 0 0 auto; }
.brand img { width: 176px; max-height: 56px; object-fit: contain; }
.social-icons { display: flex; align-items: center; gap: 10px; }
.social-icon {
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 50%;
}
.social-icon img { width: 17px; height: 17px; object-fit: contain; opacity: .72; }
.header-social { flex: 0 0 auto; }
.main-nav { display: flex; align-items: center; gap: 28px; margin-left: auto; font-size: .94rem; }
.main-nav a { opacity: .82; transition: opacity .2s, color .2s; }
.main-nav a:hover, .main-nav a.active { color: #ffd0a6; opacity: 1; }
.nav-cta { padding: 11px 18px; border: 1px solid rgba(255,255,255,.3); border-radius: 999px; }
.nav-toggle { display: none !important; width: 44px; height: 44px; border: 0; background: transparent; color: white; }
.nav-toggle span { display: block; width: 24px; height: 2px; margin: 6px auto; background: currentColor; }

.hero {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
  background: var(--ink);
  color: var(--white);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 76% 42%, rgba(236,149,64,.22), transparent 28%),
    linear-gradient(115deg, #0b1117 0 49%, #17212b 49% 100%);
}
.hero-grid {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: grid;
  grid-template-columns: .92fr 1.08fr;
  align-items: center;
  gap: 20px;
  padding-top: 110px;
}
.hero-copy { padding: 70px 0; }
.hero-copy .display span { color: var(--orange); }
.hero-copy .lead { max-width: 650px; margin: 28px 0 34px; color: #bec8d2; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 23px;
  border: 1px solid transparent;
  border-radius: 3px;
  font-weight: 700;
  transition: transform .2s, background .2s, border .2s;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--orange); color: var(--ink); }
.btn-primary:hover { background: #f3aa63; }
.btn-outline { border-color: rgba(255,255,255,.35); color: white; }
.btn-dark { background: var(--ink); color: white; }
.hero-machine { position: relative; align-self: end; padding-bottom: 8vh; }
.hero-machine::after {
  content: "";
  position: absolute;
  inset: auto 4% 5% 7%;
  height: 18%;
  border-radius: 50%;
  background: rgba(0,0,0,.45);
  filter: blur(30px);
}
.hero-machine img { position: relative; z-index: 1; width: 110%; max-width: none; filter: contrast(1.06) drop-shadow(0 32px 44px rgba(0,0,0,.3)); }
.hero-proof {
  position: absolute;
  z-index: 2;
  right: 3%;
  bottom: 7%;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  width: min(610px, 55vw);
  border: 1px solid rgba(255,255,255,.18);
  background: rgba(16,24,32,.76);
  backdrop-filter: blur(16px);
}
.hero-proof div { padding: 18px 22px; border-right: 1px solid rgba(255,255,255,.14); }
.hero-proof div:last-child { border: 0; }
.hero-proof strong { display: block; color: var(--orange); font-size: 1.45rem; }
.hero-proof span { color: #b8c2cc; font-size: .82rem; }

.section { padding: 120px 0; }
.section.soft { background: var(--surface); }
.section.dark { background: var(--ink); color: white; }
.section-head { display: grid; grid-template-columns: 1.2fr .8fr; gap: 60px; align-items: end; margin-bottom: 58px; }
.section-head .lead { margin: 0; }
.capability-strip { border-bottom: 1px solid var(--line); background: white; }
.capability-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.capability { padding: 30px 24px; border-right: 1px solid var(--line); }
.capability:first-child { border-left: 1px solid var(--line); }
.capability b { display: block; margin-bottom: 5px; font-size: 1.02rem; }
.capability span { color: var(--muted); font-size: .86rem; }
.capability i { display: inline-block; width: 8px; height: 8px; margin-right: 10px; border-radius: 50%; background: var(--orange); }

.product-stack { display: grid; gap: 24px; }
.product-card {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 520px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: white;
}
.product-card:nth-child(even) .product-media { order: 2; }
.product-media { position: relative; display: grid; place-items: center; overflow: hidden; background: #f9fafb; }
.product-media img { width: 100%; height: 100%; object-fit: contain; transition: transform .55s ease; }
.product-card:hover .product-media img { transform: scale(1.035); }
.product-no { position: absolute; top: 24px; left: 24px; z-index: 2; color: var(--muted); font-size: .76rem; font-weight: 800; letter-spacing: .16em; }
.product-body { display: flex; flex-direction: column; justify-content: center; padding: clamp(36px, 6vw, 78px); }
.product-body h3 { margin: 0 0 12px; font-size: clamp(2rem, 3.5vw, 3.6rem); line-height: 1.05; }
.product-body .model { margin-bottom: 25px; color: var(--orange-dark); font-weight: 800; letter-spacing: .08em; }
.product-body p { color: var(--muted); }
.metric-row { display: flex; flex-wrap: wrap; gap: 25px; margin: 25px 0 34px; }
.metric-row strong { display: block; font-size: 1.5rem; }
.metric-row span { color: var(--muted); font-size: .82rem; }
.text-link { display: inline-flex; align-items: center; gap: 10px; color: var(--orange-dark); font-weight: 800; }
.text-link::after { content: "→"; transition: transform .2s; }
.text-link:hover::after { transform: translateX(5px); }

.problem-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: #34414e; border: 1px solid #34414e; }
.problem { min-height: 270px; padding: 32px; background: var(--ink); }
.problem .num { color: var(--orange); font: 800 2.2rem/1 Arial, sans-serif; }
.problem h3 { margin: 55px 0 10px; font-size: 1.3rem; }
.problem p { margin: 0; color: #aeb9c4; font-size: .92rem; }
.tech-rail { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.tech-card { padding: 32px; border-top: 3px solid var(--orange); background: #1b2631; }
.tech-card h3 { margin: 20px 0 10px; }
.tech-card p { margin: 0; color: #aeb9c4; font-size: .92rem; }
.tech-icon { width: 46px; height: 46px; display: grid; place-items: center; border: 1px solid rgba(236,149,64,.45); color: var(--orange); font-weight: 800; }

.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.about-panel { position: relative; min-height: 520px; overflow: hidden; background: var(--ink); color: white; padding: 55px; }
.about-panel::after { content: ""; position: absolute; width: 380px; height: 380px; right: -150px; bottom: -170px; border: 52px solid rgba(236,149,64,.2); border-radius: 50%; }
.about-panel strong { display: block; color: var(--orange); font-size: clamp(3.5rem, 8vw, 7rem); line-height: 1; }
.about-panel span { color: #b8c3cd; }
.credential-list { display: grid; gap: 0; margin-top: 35px; border-top: 1px solid var(--line); }
.credential { display: flex; justify-content: space-between; gap: 20px; padding: 19px 0; border-bottom: 1px solid var(--line); }
.credential b { color: var(--orange-dark); }

.cta { position: relative; overflow: hidden; background: var(--orange); }
.cta::after { content: ""; position: absolute; width: 500px; height: 500px; right: -130px; top: -250px; border: 80px solid rgba(16,24,32,.09); border-radius: 50%; }
.cta-inner { position: relative; z-index: 1; display: flex; align-items: center; justify-content: space-between; gap: 40px; padding: 80px 0; }
.cta h2 { max-width: 760px; margin: 0; font-size: clamp(2rem, 4vw, 4.4rem); line-height: 1.04; letter-spacing: -.04em; }

.site-footer { padding: 65px 0 28px; background: #0b1117; color: white; }
.footer-grid { display: grid; grid-template-columns: 1.4fr .7fr .9fr; gap: 60px; }
.footer-brand img { width: 190px; margin-bottom: 22px; }
.footer-brand p, .site-footer address { color: #9da9b5; font-style: normal; }
.footer-social { margin-top: 20px; }
.footer-social .social-icon { width: 34px; height: 34px; }
.footer-social .social-icon img { width: 19px; height: 19px; margin: 0; opacity: .68; }
.footer-links { display: grid; gap: 10px; color: #b9c3cc; }
.footer-title { margin: 0 0 18px; color: #ffd0a6; font-size: .8rem; letter-spacing: .12em; text-transform: uppercase; }
.footer-bottom { margin-top: 55px; padding-top: 22px; border-top: 1px solid #25313d; color: #758290; font-size: .8rem; }

.page-hero { padding: 180px 0 95px; background: var(--ink); color: white; }
.page-hero .lead { max-width: 760px; margin: 28px 0 0; color: #b8c3cd; }
.crumb { margin-bottom: 28px; color: #8f9aa5; font-size: .85rem; }
.crumb a { color: #ffd0a6; }
.page-hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 55px; align-items: center; }
.page-hero-machine { padding: 34px; background: white; }
.page-hero-machine img { width: 100%; aspect-ratio: 16/11; object-fit: contain; }
.page-hero-machine.portrait img { height: min(68vh, 720px); aspect-ratio: auto; }
.spec-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.spec { min-height: 145px; padding: 26px; background: white; }
.spec strong { display: block; font-size: 1.6rem; }
.spec span { color: var(--muted); font-size: .85rem; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.feature { padding: 30px; border: 1px solid var(--line); background: white; }
.feature b { display: inline-grid; place-items: center; width: 34px; height: 34px; margin-bottom: 45px; background: var(--orange-pale); color: var(--orange-dark); }
.feature h3 { margin: 0 0 10px; }
.feature p { margin: 0; color: var(--muted); }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); }
.spec-table { width: 100%; border-collapse: collapse; background: white; }
.spec-table th, .spec-table td { padding: 17px 20px; border-bottom: 1px solid var(--line); text-align: left; }
.spec-table th { width: 38%; color: var(--muted); font-weight: 500; }
.spec-table tr:last-child th, .spec-table tr:last-child td { border-bottom: 0; }
.listing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.listing-card { border: 1px solid var(--line); background: white; }
.listing-card img { width: 100%; aspect-ratio: 4/3; object-fit: contain; background: #f9fafb; }
.listing-card-body { padding: 28px; }
.listing-card h2 { margin: 0 0 6px; font-size: 1.65rem; line-height: 1.2; }
.listing-card p { color: var(--muted); }
.contact-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 80px; }
.contact-cards { display: grid; gap: 15px; }
.contact-card { padding: 25px; border: 1px solid var(--line); }
.contact-card span { display: block; color: var(--muted); font-size: .82rem; }
.contact-card strong { font-size: 1.1rem; }
.contact-note { padding: 40px; background: var(--orange-pale); }
.contact-note ul { padding-left: 20px; color: var(--muted); }
.case-notice { display: flex; gap: 18px; margin-bottom: 28px; padding: 18px 22px; border-left: 4px solid var(--orange); background: var(--orange-pale); }
.case-notice b { flex: 0 0 auto; }
.case-notice span { color: var(--muted); }
.case-list { display: grid; gap: 30px; }
.case-study { display: grid; grid-template-columns: .72fr 1.28fr; overflow: hidden; border: 1px solid var(--line); background: white; }
.case-side { position: relative; min-height: 510px; padding: 48px; overflow: hidden; background: var(--ink); color: white; }
.case-side::after { content: ""; position: absolute; right: -120px; bottom: -150px; width: 330px; height: 330px; border: 46px solid rgba(236,149,64,.16); border-radius: 50%; }
.case-side span { color: #ffd0a6; font-size: .8rem; font-weight: 800; letter-spacing: .12em; }
.case-side p { margin: 90px 0 10px; color: var(--orange); font-weight: 800; }
.case-side h2 { position: relative; z-index: 1; margin: 0; font-size: clamp(2.1rem, 4vw, 4.2rem); line-height: 1.08; letter-spacing: -.04em; }
.case-main { display: grid; align-content: center; padding: clamp(34px, 5vw, 68px); }
.case-block { padding: 22px 0; border-bottom: 1px solid var(--line); }
.case-block:first-child { padding-top: 0; }
.case-block:last-child { padding-bottom: 0; border-bottom: 0; }
.case-block > b { color: var(--orange-dark); font-size: .86rem; letter-spacing: .08em; }
.case-block p { margin: 8px 0 0; color: var(--muted); }
.case-block ul { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 28px; margin: 14px 0 0; padding-left: 20px; color: var(--muted); }
.case-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 13px; }
.case-tags span { padding: 6px 11px; background: var(--surface); color: var(--ink-2); font-size: .82rem; font-weight: 700; }

.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: none; }

@media (max-width: 980px) {
  .container { width: min(calc(100% - 32px), var(--max)); }
  .nav-wrap { gap: 18px; }
  .main-nav { display: flex; gap: 16px; font-size: .82rem; white-space: nowrap; }
  .nav-cta { padding: 9px 13px; }
  .hero-grid, .page-hero-grid { grid-template-columns: 1fr; }
  .hero-grid { padding-top: 150px; align-content: center; }
  .hero-machine { padding-bottom: 120px; }
  .hero-machine img { width: 100%; }
  .hero-proof { right: 16px; bottom: 24px; width: calc(100% - 32px); }
  .section-head, .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 28px; }
  .case-study { grid-template-columns: 1fr; }
  .case-side { min-height: 330px; }
  .case-side p { margin-top: 55px; }
  .product-card { grid-template-columns: 1fr; }
  .product-card:nth-child(even) .product-media { order: 0; }
  .product-media { min-height: 410px; }
  .problem-grid, .tech-rail, .capability-grid, .spec-grid { grid-template-columns: repeat(2, 1fr); }
  .listing-grid, .feature-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .brand img { width: 145px; }
  .site-header { overflow: hidden; }
  .nav-wrap { width: 100%; height: 118px; padding: 10px 16px 0; display: grid; grid-template-columns: 1fr; gap: 6px; }
  .nav-wrap { grid-template-columns: 1fr auto; }
  .brand { justify-content: flex-start; }
  .header-social { justify-self: end; }
  .main-nav { grid-column: 1 / -1; width: 100%; padding: 0 0 11px; justify-content: flex-start; gap: 0; overflow-x: auto; scrollbar-width: none; }
  .main-nav::-webkit-scrollbar { display: none; }
  .main-nav a { flex: 0 0 auto; padding: 7px 13px; opacity: .9; }
  .main-nav .nav-cta { min-height: 0; border: 0; border-radius: 0; }
  .hero-grid { padding-top: 150px; }
  .hero-copy { padding-top: 35px; }
  .hero-proof { grid-template-columns: 1fr 1fr 1fr; }
  .hero-proof div { padding: 14px 10px; }
  .hero-proof strong { font-size: 1.1rem; }
  .hero-proof span { font-size: .7rem; }
  .section { padding: 82px 0; }
  .section-head { margin-bottom: 38px; }
  .capability-grid, .problem-grid, .tech-rail, .spec-grid, .feature-grid, .listing-grid, .footer-grid { grid-template-columns: 1fr; }
  .capability { border-left: 1px solid var(--line); border-bottom: 1px solid var(--line); }
  .product-media { min-height: 290px; }
  .product-body { padding: 32px 24px 40px; }
  .case-notice { align-items: flex-start; flex-direction: column; gap: 4px; }
  .case-side { min-height: 290px; padding: 34px 26px; }
  .case-main { padding: 34px 24px; }
  .case-block ul { grid-template-columns: 1fr; }
  .metric-row { gap: 15px 22px; }
  .about-panel { min-height: 430px; padding: 38px 28px; }
  .cta-inner { align-items: flex-start; flex-direction: column; }
  .page-hero { padding: 170px 0 72px; }
  .page-hero-machine { padding: 12px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}