/* ============================================================
   Hongxiang Equipment — core stylesheet
   ============================================================ */

:root {
  --ink: #0A0D11;
  --ink-2: #12171E;
  --ink-3: #1B222B;
  --paper: #FFFFFF;
  --paper-2: #F3F4F5;
  --paper-3: #E8EAEC;
  --text: #10151B;
  --muted: #5C6874;
  --muted-inv: #96A2AF;
  --accent: #F2601F;
  --accent-dark: #C94A11;
  --line: rgba(255, 255, 255, 0.12);
  --line-dark: rgba(16, 21, 27, 0.12);

  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --container: 1240px;
  --gutter: 32px;
  --radius: 4px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  color: var(--text);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }

h1, h2, h3, h4 {
  margin: 0;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.025em;
}

p { margin: 0; }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.mono {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

/* ---------------- Announcement + header ---------------- */

.topbar {
  background: var(--ink);
  color: var(--muted-inv);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.topbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 38px;
  padding-top: 8px;
  padding-bottom: 8px;
  flex-wrap: wrap;
}
.topbar a { color: #D5DBE2; }
.topbar a:hover { color: #fff; }
.topbar ul {
  display: flex;
  gap: 26px;
  margin: 0;
  padding: 0;
  list-style: none;
  white-space: nowrap;
}
.topbar .mono { font-size: 10px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: rgba(10, 13, 17, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.site-header .container {
  display: flex;
  align-items: center;
  gap: 40px;
  height: 74px;
}

.brand { display: flex; align-items: center; gap: 12px; color: #fff; }
.brand-mark {
  width: 34px; height: 34px;
  display: grid; place-items: center;
  background: var(--accent);
  color: #fff;
  font-weight: 800;
  font-size: 15px;
  letter-spacing: -0.04em;
  border-radius: 2px;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-name { font-weight: 700; font-size: 15px; letter-spacing: 0.02em; }
.brand-sub {
  font-family: var(--mono);
  font-size: 8.5px;
  letter-spacing: 0.16em;
  color: var(--muted-inv);
  text-transform: uppercase;
}

.nav { display: flex; align-items: center; gap: 30px; margin-left: auto; }
.nav a {
  color: #C3CCD6;
  font-size: 13.5px;
  font-weight: 500;
  letter-spacing: 0.01em;
  padding: 6px 0;
  position: relative;
  transition: color 0.2s;
}
.nav a::after {
  content: "";
  position: absolute;
  left: 0; right: 100%; bottom: 0;
  height: 2px;
  background: var(--accent);
  transition: right 0.28s var(--ease);
}
.nav a:hover { color: #fff; }
.nav a:hover::after,
.nav a.active::after { right: 0; }
.nav a.active { color: #fff; }

.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 40px;
  padding: 0 20px;
  background: var(--accent);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  border-radius: 2px;
  transition: background 0.2s, transform 0.2s;
}
.header-cta:hover { background: var(--accent-dark); transform: translateY(-1px); }

.nav-toggle {
  display: none;
  width: 42px; height: 42px;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 2px;
  color: #fff;
}
.nav-toggle span {
  display: block; width: 18px; height: 1.5px;
  background: currentColor; margin: 4px auto;
  transition: 0.25s;
}

/* ---------------- Buttons ---------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: 50px;
  padding: 0 28px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.01em;
  border-radius: 2px;
  border: 1px solid transparent;
  transition: all 0.22s var(--ease);
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); transform: translateY(-2px); }
.btn-ghost { border-color: rgba(255, 255, 255, 0.32); color: #fff; }
.btn-ghost:hover { background: #fff; color: var(--ink); border-color: #fff; }
.btn-dark { background: var(--ink); color: #fff; }
.btn-dark:hover { background: var(--ink-3); transform: translateY(-2px); }
.btn-outline { border-color: var(--line-dark); color: var(--ink); }
.btn-outline:hover { border-color: var(--ink); }
.btn .arrow { transition: transform 0.22s var(--ease); }
.btn:hover .arrow { transform: translateX(4px); }

/* ---------------- Hero (Hongming-style light banner carousel) ---------------- */

.hero {
  position: relative;
  background: #FFFFFF;
  color: var(--ink);
  overflow: hidden;
}

.hero-slider {
  position: relative;
  width: 100%;
  overflow: hidden;
}
.hero-track {
  display: flex;
  width: 100%;
  transition: transform 0.6s var(--ease);
}
.hero-slide {
  flex: 0 0 100%;
  min-width: 100%;
  position: relative;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(900px 480px at 88% 0%, rgba(242, 96, 31, 0.08), transparent 60%),
    linear-gradient(180deg, #FAFBFC 0%, #FFFFFF 100%);
  z-index: 0;
}
.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 48px;
  align-items: center;
  padding-top: 40px;
  padding-bottom: 40px;
}
.hero-copy { max-width: 640px; }

.hero-visual {
  position: relative;
  border: 1px solid #E8EAEC;
  background: #FFFFFF;
  overflow: hidden;
  box-shadow: 0 24px 60px -30px rgba(10, 13, 17, 0.16);
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  aspect-ratio: 4 / 2.6;
  padding: 20px;
  filter: grayscale(0.03) contrast(1.02);
}
.hero-visual-tag {
  position: absolute;
  left: 0; bottom: 0;
  background: var(--accent);
  color: #fff;
  padding: 9px 16px;
  font-size: 10px;
  letter-spacing: 0.12em;
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: #5C6874;
  margin-bottom: 16px;
}
.hero-kicker::before {
  content: "";
  width: 34px; height: 2px;
  background: var(--accent);
}
.hero h1 {
  font-size: clamp(30px, 4.2vw, 54px);
  line-height: 1.04;
  letter-spacing: -0.04em;
  max-width: 15em;
  margin-bottom: 18px;
}
.hero h1 em {
  font-style: normal;
  color: var(--accent);
}
.hero-sub {
  font-size: 15px;
  line-height: 1.65;
  color: #5C6874;
  max-width: 540px;
  margin-bottom: 26px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }

.hero .btn-ghost { border-color: #C6CDD4; color: var(--ink); }
.hero .btn-ghost:hover { background: var(--ink); color: #fff; border-color: var(--ink); }

/* Carousel controls */
.hero-arrows {
  position: absolute;
  inset: 0;
  z-index: 5;
  pointer-events: none;
}
.hero-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 46px; height: 46px;
  border-radius: 50%;
  border: 1px solid #D5DAE0;
  background: rgba(255, 255, 255, 0.95);
  color: var(--ink);
  font-size: 18px;
  line-height: 1;
  display: grid;
  place-items: center;
  cursor: pointer;
  pointer-events: auto;
  box-shadow: 0 4px 16px -6px rgba(10, 13, 17, 0.22);
  transition: all 0.2s;
}
.hero-arrow:hover { background: var(--accent); color: #fff; border-color: var(--accent); }
.hero-arrow.prev { left: 20px; }
.hero-arrow.next { right: 20px; }

.hero-facts {
  position: relative;
  z-index: 3;
  border-top: 1px solid #E8EAEC;
  background: #FFFFFF;
}
.hero-facts .container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  padding-top: 0;
  padding-bottom: 0;
}
.fact {
  padding: 18px 18px 18px 0;
  border-right: 1px solid #E8EAEC;
  color: var(--ink);
}
.fact:last-child { border-right: 0; }
.fact-num {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 6px;
  white-space: nowrap;
}
.fact-num span { color: var(--accent); }
.fact-label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #8A95A1;
  line-height: 1.5;
}

/* Dots */
.hero-dots {
  position: relative;
  z-index: 3;
  display: flex;
  gap: 8px;
  justify-content: center;
  align-items: center;
  padding: 0 0 20px;
  background: #FFFFFF;
}
.hero-dots .dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: #D5DAE0;
  border: none;
  padding: 0;
  cursor: pointer;
  transition: all 0.3s;
}
.hero-dots .dot.active {
  width: 26px;
  border-radius: 4px;
  background: var(--accent);
}

/* ---------------- Section basics ---------------- */

.section { padding: 56px 0; }
.section-tight { padding: 44px 0; }
.section-dark { background: var(--paper-2); color: var(--text); }
.section-gray { background: var(--paper-2); }

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 36px;
}
.section-head .label {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--muted);
  margin-bottom: 18px;
}
.section-head .label::before {
  content: "";
  width: 28px; height: 2px;
  background: var(--accent);
}
.section-dark .section-head .label { color: var(--muted); }
.section-head h2 {
  font-size: clamp(28px, 3.4vw, 44px);
  letter-spacing: -0.035em;
  line-height: 1.05;
  max-width: 18em;
}
.section-head p {
  color: var(--muted);
  max-width: 380px;
  font-size: 15px;
  padding-bottom: 6px;
}
.section-dark .section-head p { color: var(--muted); }

/* ---------------- Category cards ---------------- */

.cat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.cat-card {
  background: var(--paper);
  border: 1px solid var(--line-dark);
  display: flex;
  flex-direction: column;
  transition: border-color 0.25s, transform 0.3s var(--ease), box-shadow 0.3s;
  position: relative;
  overflow: hidden;
}
.cat-card:hover { border-color: var(--accent); transform: translateY(-4px); box-shadow: 0 18px 40px -24px rgba(10, 13, 17, 0.4); }
.cat-card:hover .cat-desc { color: var(--muted); }
.cat-card:hover .cat-link { color: var(--accent); }
.cat-media {
  position: relative;
  aspect-ratio: 4 / 3;
  background: var(--paper);
  overflow: hidden;
  border-bottom: 1px solid var(--line-dark);
  display: flex;
  align-items: center;
  justify-content: center;
}
.cat-media img {
  width: 100%; height: 100%;
  object-fit: contain;
  padding: 18px;
  transition: transform 0.6s var(--ease);
  filter: grayscale(0.1);
}
.cat-card:hover .cat-media img { transform: scale(1.04); filter: grayscale(0); }
.cat-body {
  padding: 20px 22px 22px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.cat-index {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.1em;
  margin-bottom: 0;
}
.cat-card h3 {
  font-size: 19px;
  margin: 12px 0 10px;
  letter-spacing: -0.02em;
}
.cat-card .cat-desc { margin-bottom: 0; }
.cat-card .cat-link { margin-top: auto; padding-top: 18px; }
.cat-desc { font-size: 14px; color: var(--muted); line-height: 1.6; margin-bottom: 24px; }
.cat-link {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

/* ---------------- Product grid ---------------- */

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 42px;
}
.filter-btn {
  background: transparent;
  border: 1px solid var(--line-dark);
  color: var(--muted);
  padding: 10px 18px;
  font-size: 13px;
  font-weight: 500;
  border-radius: 2px;
  transition: all 0.2s;
}
.filter-btn:hover { border-color: var(--ink); color: var(--ink); }
.filter-btn.active {
  background: var(--ink);
  border-color: var(--ink);
  color: #fff;
}

.prod-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

/* Homepage featured machines — larger 2-column layout */
#featured.prod-grid {
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}
#featured .prod-media { aspect-ratio: 4 / 2.8; }
#featured .prod-body h3 { font-size: 18px; }
.prod-card {
  border: 1px solid var(--line-dark);
  background: var(--paper);
  display: flex;
  flex-direction: column;
  transition: border-color 0.25s, transform 0.3s var(--ease), box-shadow 0.3s;
}
.prod-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 18px 40px -24px rgba(10, 13, 17, 0.4);
}
.prod-media {
  position: relative;
  aspect-ratio: 4 / 3;
  background: var(--paper);
  overflow: hidden;
  border-bottom: 1px solid var(--line-dark);
  display: flex;
  align-items: center;
  justify-content: center;
}
.prod-media img {
  width: 100%; height: 100%;
  object-fit: contain;
  padding: 18px;
  transition: transform 0.6s var(--ease);
  filter: grayscale(0.1);
}
.prod-card:hover .prod-media img { transform: scale(1.04); filter: grayscale(0); }
.prod-model {
  position: absolute;
  top: 12px; left: 12px;
  background: rgba(242, 96, 31, 0.92);
  color: #fff;
  padding: 5px 10px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
}
.prod-body {
  padding: 18px 20px 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.prod-cat {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}
.prod-body h3 {
  font-size: 16px;
  line-height: 1.3;
  letter-spacing: -0.015em;
  margin-bottom: 8px;
}
.prod-tagline {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.55;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.prod-foot {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--line-dark);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink);
}
.prod-foot .arrow { transition: transform 0.25s var(--ease); color: var(--accent); }
.prod-card:hover .prod-foot .arrow { transform: translateX(5px); }

/* ---------------- Applications ---------------- */

.app-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--paper-3);
  border: 1px solid var(--paper-3);
}
.app-item {
  background: var(--paper);
  padding: 24px 22px;
  transition: background 0.25s;
}
.app-item:hover { background: var(--paper-2); }
.app-item .mono { color: var(--accent); display: block; margin-bottom: 14px; }
.app-item h4 { font-size: 16px; margin-bottom: 8px; letter-spacing: -0.01em; color: var(--text); }
.app-item p { font-size: 13px; color: var(--muted); line-height: 1.6; }

/* ---------------- Why / value ---------------- */

.value-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line-dark);
  border: 1px solid var(--line-dark);
}
.value-item { background: var(--paper); padding: 28px 28px; }
.value-num {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.12em;
  margin-bottom: 14px;
  display: block;
}
.value-item h3 { font-size: 18px; margin-bottom: 10px; letter-spacing: -0.02em; }
.value-item p { font-size: 13.5px; color: var(--muted); line-height: 1.65; }

/* ---------------- Line / process strip ---------------- */

.line-flow {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: step;
}
.flow-step {
  position: relative;
  padding-top: 26px;
  border-top: 1px solid var(--paper-3);
}
.flow-step::before {
  content: "";
  position: absolute;
  top: -5px; left: 0;
  width: 9px; height: 9px;
  background: var(--accent);
  border-radius: 50%;
}
.flow-step .mono { color: var(--muted); display: block; margin-bottom: 14px; }
.flow-step h4 { font-size: 17px; margin-bottom: 8px; color: var(--text); }
.flow-step p { font-size: 13px; color: var(--muted); line-height: 1.6; }

/* ---------------- CTA band ---------------- */

.cta-band {
  background: var(--accent);
  color: #fff;
  padding: 68px 0;
}
.cta-band .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
  flex-wrap: wrap;
}
.cta-band h2 {
  font-size: clamp(26px, 3vw, 38px);
  letter-spacing: -0.03em;
  line-height: 1.1;
  max-width: 16em;
}
.cta-band p { margin-top: 12px; font-size: 15px; color: rgba(255, 255, 255, 0.86); }
.cta-band .btn-ghost { border-color: rgba(255,255,255,0.5); }
.cta-band .btn-ghost:hover { background: #fff; color: var(--accent); border-color: #fff; }

/* ---------------- Page header (inner pages) ---------------- */

.page-head {
  background: var(--ink);
  color: #fff;
  padding: 88px 0 64px;
  position: relative;
  overflow: hidden;
}
.page-head::after {
  content: "";
  position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.045) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to right, #000, transparent 70%);
  pointer-events: none;
}
.page-head .container { position: relative; z-index: 2; }
.crumb {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted-inv);
  margin-bottom: 22px;
}
.crumb a { color: var(--muted-inv); }
.crumb a:hover { color: #fff; }
.page-head h1 {
  font-size: clamp(32px, 4.4vw, 56px);
  letter-spacing: -0.04em;
  line-height: 1.02;
  max-width: 20em;
}
.page-head .lead {
  margin-top: 20px;
  max-width: 620px;
  color: #AEB9C5;
  font-size: 16px;
}
.page-head.slim { padding: 26px 0; }
.page-head.slim::after { display: none; }
.page-head.slim .crumb { margin-bottom: 0; }

/* ---------------- Product detail ---------------- */

.detail-top {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 64px;
  align-items: start;
  padding: 72px 0;
}
.detail-media {
  background: var(--paper);
  aspect-ratio: 4 / 3.1;
  overflow: hidden;
  position: relative;
  border: 1px solid var(--line-dark);
  display: flex;
  align-items: center;
  justify-content: center;
}
.detail-media img { width: 100%; height: 100%; object-fit: contain; }
.detail-model {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--accent);
  margin-bottom: 16px;
}
.detail-top h1 {
  font-size: clamp(28px, 3.4vw, 42px);
  letter-spacing: -0.035em;
  line-height: 1.06;
  margin-bottom: 18px;
}
.detail-cn {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 22px;
  letter-spacing: 0.02em;
}
.detail-lead { font-size: 15.5px; line-height: 1.75; color: #2C3540; margin-bottom: 30px; }
.detail-actions { display: flex; flex-wrap: wrap; gap: 12px; }

.detail-block { padding: 72px 0; border-top: 1px solid var(--line-dark); }
.detail-block h2 {
  font-size: 24px;
  letter-spacing: -0.025em;
  margin-bottom: 30px;
  display: flex;
  align-items: center;
  gap: 14px;
}
.detail-block h2::before {
  content: "";
  width: 26px; height: 3px;
  background: var(--accent);
}

.feature-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 48px; margin: 0; padding: 0; list-style: none; }
.feature-list li {
  display: flex;
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line-dark);
  font-size: 14.5px;
  line-height: 1.6;
}
.feature-list li::before {
  content: "";
  flex: 0 0 auto;
  width: 6px; height: 6px;
  margin-top: 9px;
  background: var(--accent);
}

.spec-table { width: 100%; border-collapse: collapse; font-size: 14.5px; }
.spec-table tr { border-bottom: 1px solid var(--line-dark); }
.spec-table tr:nth-child(odd) { background: var(--paper-2); }
.spec-table th {
  text-align: left;
  font-weight: 500;
  color: var(--muted);
  padding: 15px 20px;
  width: 42%;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  vertical-align: top;
}
.spec-table td { padding: 15px 20px; font-weight: 500; color: var(--ink); }

.chip-row { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  border: 1px solid var(--line-dark);
  padding: 9px 16px;
  font-size: 13px;
  color: var(--muted);
  border-radius: 999px;
}

.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

/* ---------------- About page ---------------- */

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}
.split-media { aspect-ratio: 4 / 3.2; overflow: hidden; background: var(--ink-2); }
.split-media img { width: 100%; height: 100%; object-fit: cover; }
.section-intro .split { align-items: center; }
.split-copy h2 {
  font-size: clamp(26px, 3vw, 38px);
  letter-spacing: -0.035em;
  line-height: 1.08;
  margin: 18px 0 24px;
}
.split-copy .label { display: flex; align-items: center; gap: 12px; color: var(--muted); }
.split-copy .label::before { content: ""; width: 28px; height: 2px; background: var(--accent); }
.split-copy .prose { margin-bottom: 30px; }
.prose p { font-size: 15.5px; line-height: 1.8; color: #2C3540; margin-bottom: 18px; }
.prose p:last-child { margin-bottom: 0; }

.stat-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line-dark);
  border: 1px solid var(--line-dark);
  border-left: 0; border-right: 0;
}
.stat-cell { background: var(--paper); padding: 34px 28px; }
.stat-cell .num { font-size: 34px; font-weight: 700; letter-spacing: -0.03em; line-height: 1; }
.stat-cell .lbl { font-family: var(--mono); font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); margin-top: 10px; }

/* ---------------- Honor / certifications ---------------- */

.honor-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.honor-card {
  background: var(--paper);
  border: 1px solid var(--line-dark);
  border-top: 3px solid var(--accent);
  padding: 28px 26px 30px;
  transition: transform 0.3s var(--ease), box-shadow 0.3s;
}
.honor-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 40px -26px rgba(10, 13, 17, 0.35);
}
.honor-badge {
  display: inline-block;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(242, 96, 31, 0.08);
  border: 1px solid rgba(242, 96, 31, 0.25);
  padding: 5px 12px;
  border-radius: 2px;
  margin-bottom: 18px;
}
.honor-card h3 { font-size: 18px; letter-spacing: -0.02em; margin-bottom: 10px; }
.honor-card p { font-size: 13.5px; color: var(--muted); line-height: 1.65; }

/* ---------------- Contact ---------------- */

.contact-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 72px;
  align-items: start;
  padding: 80px 0;
}
.contact-list { list-style: none; margin: 0; padding: 0; }
.contact-list li { padding: 24px 0; border-bottom: 1px solid var(--line-dark); }
.contact-list li:first-child { padding-top: 0; }
.contact-list .mono { color: var(--muted); display: block; margin-bottom: 8px; }
.contact-list .val { font-size: 16px; font-weight: 500; line-height: 1.5; }
.contact-list a.val:hover { color: var(--accent); }

.form { display: grid; gap: 18px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field label {
  display: block;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}
.field input,
.field select,
.field textarea {
  width: 100%;
  font-family: var(--font);
  font-size: 14.5px;
  color: var(--text);
  background: var(--paper);
  border: 1px solid var(--line-dark);
  border-radius: 2px;
  padding: 13px 14px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.field textarea { min-height: 128px; resize: vertical; }
.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--ink);
  box-shadow: 0 0 0 3px rgba(16, 21, 27, 0.06);
}
.form-note { font-size: 12.5px; color: var(--muted); line-height: 1.6; }
.form-status {
  display: none;
  padding: 16px 18px;
  background: #EAF6EE;
  border-left: 3px solid #1E8A48;
  font-size: 14px;
  color: #14602F;
}
.form-status.show { display: block; }

/* ---------------- Footer ---------------- */

.site-footer {
  background: var(--ink);
  color: #fff;
  padding: 72px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 56px;
}
.site-footer h5 {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted-inv);
  margin: 0 0 20px;
  font-weight: 500;
}
.footer-grid ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 11px; }
.footer-grid ul a { font-size: 13.5px; color: #C3CCD6; }
.footer-grid ul a:hover { color: var(--accent); }
.footer-about p {
  font-size: 13.5px;
  color: var(--muted-inv);
  line-height: 1.75;
  margin: 18px 0 0;
  max-width: 34em;
}
.footer-contact li { font-size: 13.5px; color: #C3CCD6; line-height: 1.7; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 22px 0;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted-inv);
}

/* ---------------- Misc ---------------- */

.reveal { opacity: 0; transform: translateY(18px); }
.reveal.in { opacity: 1; transform: none; transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }

/* ---------------- Responsive ---------------- */

@media (max-width: 1080px) {
  .cat-grid, .prod-grid, .related-grid { grid-template-columns: repeat(2, 1fr); }
  .app-grid { grid-template-columns: repeat(2, 1fr); }
  .honor-grid { grid-template-columns: repeat(2, 1fr); }
  .detail-top { grid-template-columns: 1fr; gap: 40px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  .line-flow { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .hero-inner { grid-template-columns: 1fr; gap: 44px; }
  .hero-visual { max-width: 640px; }
}

@media (max-width: 860px) {
  :root { --gutter: 20px; }
  .topbar { display: none; }
  .nav-toggle { display: block; margin-left: auto; }
  .nav {
    position: fixed;
    inset: 74px 0 auto 0;
    background: var(--ink);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 8px 20px 24px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: 0.25s var(--ease);
    max-height: calc(100vh - 74px);
    overflow: auto;
  }
  .nav.open { transform: none; opacity: 1; pointer-events: auto; }
  .nav a { width: 100%; padding: 15px 0; border-bottom: 1px solid rgba(255, 255, 255, 0.08); font-size: 15px; }
  .nav a::after { display: none; }
  .header-cta { display: none; }

  .section { padding: 68px 0; }
  .section-head { flex-direction: column; align-items: flex-start; gap: 20px; margin-bottom: 36px; }
  .section-head p { padding-bottom: 0; }
  .hero-inner { grid-template-columns: 1fr; gap: 40px; padding-top: 60px; padding-bottom: 48px; }
  .hero-visual img { aspect-ratio: 4 / 2.6; }
  .hero-facts .container { grid-template-columns: 1fr 1fr; }
  .fact { border-right: 0; border-bottom: 1px solid rgba(255,255,255,0.1); padding: 20px 0; }
  .fact:nth-child(odd) { border-right: 1px solid rgba(255,255,255,0.1); }
  .fact-num { font-size: 24px; }

  .cat-grid, .prod-grid, .related-grid, .app-grid, .value-grid, .line-flow, .split, .stat-row, .honor-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: 44px; padding: 48px 0; }
  .field-row { grid-template-columns: 1fr; }
  .cta-band .container { flex-direction: column; align-items: flex-start; gap: 28px; }
  .footer-grid { grid-template-columns: 1fr; gap: 34px; }
  .feature-list { grid-template-columns: 1fr; }
  .detail-top { padding: 44px 0; }
  .detail-block { padding: 48px 0; }
  .spec-table th { width: 50%; }
}

/* ============================================================
   Light theme overrides (white + orange, Hongming style)
   ============================================================ */

/* ---- Topbar → light ---- */
.topbar {
  background: #F5F6F7;
  color: #5C6874;
  border-bottom: 1px solid #E8EAEC;
}
.topbar a { color: #5C6874; }
.topbar a:hover { color: var(--accent); }

/* ---- Header → white ---- */
.site-header {
  background: #FFFFFF;
  border-bottom: 1px solid #E8EAEC;
}
.brand { color: var(--ink); }
.brand-sub { color: #8A95A1; }
.nav a { color: #454F5B; }
.nav a:hover, .nav a.active { color: var(--ink); }
.nav-toggle { border-color: #D5DAE0; color: var(--ink); }

/* ---- Section dark → light gray ---- */
.section-dark {
  background: #F5F6F7;
  color: var(--ink);
}
.section-dark .section-head .label { color: #5C6874; }
.section-dark .section-head p { color: #5C6874; }

/* ---- Applications (was dark) → light ---- */
.app-grid {
  background: #E8EAEC;
  border: 1px solid #E8EAEC;
}
.app-item { background: #FFFFFF; }
.app-item:hover { background: #FAFBFC; }
.app-item p { color: #5C6874; }

/* ---- Line flow (was dark) → light ---- */
.flow-step { border-top: 1px solid #E0E4E8; }
.flow-step .mono { color: #8A95A1; }
.flow-step p { color: #5C6874; }

/* ---- Cat card hover → orange border + lift ---- */
.cat-card:hover .cat-desc { color: #5C6874; }
.cat-card:hover .cat-link { color: var(--accent); }

/* ---- CTA band keep orange ---- */
.cta-band { background: var(--accent); color: #fff; }

/* ---- Footer keep dark for contrast ---- */
.site-footer { background: var(--ink); color: #fff; }

/* ---- Page header (inner pages) → light ---- */
.page-head {
  background: #FAFBFC;
  color: var(--ink);
}
.page-head::after {
  background-image: linear-gradient(rgba(16,21,27,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16,21,27,0.03) 1px, transparent 1px);
}
.page-head h1 { color: var(--ink); }
.page-head .lead { color: #5C6874; }
.crumb { color: #8A95A1; }
.crumb a { color: #8A95A1; }
.crumb a:hover { color: var(--accent); }

/* ---- Mobile nav → white ---- */
@media (max-width: 860px) {
  .nav {
    background: #FFFFFF;
    border-bottom: 1px solid #E8EAEC;
  }
  .nav a { border-bottom: 1px solid #E8EAEC; color: #454F5B; }
  .nav a:hover, .nav a.active { color: var(--ink); }
  .fact { border-bottom: 1px solid #E8EAEC; }
  .fact:nth-child(odd) { border-right: 1px solid #E8EAEC; }
}

/* ============================================================
   Compact homepage — chips, merged why+flow
   ============================================================ */

/* ---- Application chips ---- */
.app-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 32px;
}
.chip {
  padding: 8px 18px;
  border: 1px solid var(--paper-3);
  background: var(--paper);
  color: #454F5B;
  font-size: 13.5px;
  border-radius: 2px;
  transition: all 0.2s;
}
.chip:hover { border-color: var(--accent); color: var(--accent); }

/* ---- Merged why + flow grid ---- */
.why-flow-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 48px;
  align-items: start;
}
.why-title {
  font-size: 16px;
  letter-spacing: -0.01em;
  margin-bottom: 22px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--accent);
  display: inline-block;
}
.why-list { display: flex; flex-direction: column; }
.why-item {
  display: flex;
  gap: 18px;
  padding: 16px 0;
  border-bottom: 1px solid var(--paper-3);
}
.why-item:first-child { padding-top: 0; }
.why-item:last-child { border-bottom: 0; }
.why-item .value-num { margin-bottom: 0; flex-shrink: 0; }
.why-item h4 { font-size: 15px; margin-bottom: 4px; }
.why-item p { font-size: 13px; color: var(--muted); line-height: 1.55; }

.flow-col .line-flow {
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}

/* ---- Responsive for merged section ---- */
@media (max-width: 860px) {
  .why-flow-grid { grid-template-columns: 1fr; gap: 36px; }
  .flow-col .line-flow { grid-template-columns: 1fr; }
}