:root {
  --color-primary: #1a365d;
  --color-primary-dark: #0f172a;
  --color-accent: #ed8936;
  --color-pale: #f7fafc;
  --color-text: #1a202c;
  --color-muted: #718096;
  --color-line: #e2e8f0;
  --shadow-soft: 0 18px 55px rgba(15, 23, 42, 0.11);
  --shadow-card: 0 14px 36px rgba(26, 54, 93, 0.12);
  --radius-lg: 28px;
  --radius-md: 18px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--color-text);
  background: #fff;
  font-family: "Aptos", "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.65;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; }
button, input, textarea { font: inherit; }
.hidden { display: none !important; }
[hidden] { display: none !important; }
html[data-lang="zh"] .lang-content[data-lang="en"] { display: none !important; }
html[data-lang="zh"] .lang-content.hidden[data-lang="zh"] { display: revert !important; }
.container-wide { width: min(1180px, calc(100% - 40px)); margin-inline: auto; }
.section { padding: 92px 0; position: relative; max-width: 100%; }
.section-soft { background: var(--color-pale); }
.section-dark { background: var(--color-primary-dark); color: #fff; }
.eyebrow {
  color: var(--color-accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.section-title {
  margin: 10px 0 14px;
  font-size: clamp(2rem, 4vw, 3.35rem);
  line-height: 1.08;
  letter-spacing: -0.04em;
  color: var(--color-primary-dark);
}
.section-dark .section-title, .section-dark .section-lead { color: #fff; }
.section-lead { max-width: 720px; color: var(--color-muted); font-size: 1.05rem; }
.section-head { display: flex; justify-content: space-between; gap: 28px; align-items: end; margin-bottom: 36px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 24px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 800;
  transition: transform .22s ease, box-shadow .22s ease, background .22s ease;
  cursor: pointer;
}
.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-card); }
.btn-primary { background: var(--color-accent); color: #fff; }
.btn-outline { border-color: rgba(26,54,93,.25); color: var(--color-primary); background: #fff; }
.btn-light { background: #fff; color: var(--color-primary); }
.btn-sm { min-height: 38px; padding-inline: 18px; font-size: .9rem; }

.site-header { position: sticky; top: 0; z-index: 1000; background: rgba(255,255,255,.94); backdrop-filter: blur(16px); border-bottom: 1px solid rgba(226,232,240,.9); }
.site-header.scrolled { box-shadow: 0 14px 35px rgba(15,23,42,.08); }
.header-inner { min-height: 74px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.logo, .footer-logo { display: inline-flex; align-items: center; gap: 12px; flex-shrink: 0; }
.logo-mark {
  width: 46px; height: 46px; display: inline-grid; place-items: center;
  border-radius: 50% 50% 42% 58%;
  background: radial-gradient(circle at 30% 25%, #fff 0 16%, var(--color-accent) 17% 33%, var(--color-primary) 34% 100%);
  color: #fff; font-weight: 900; font-size: .72rem; letter-spacing: .04em;
  box-shadow: 0 10px 22px rgba(26,54,93,.22);
}
.logo-image { border-radius: 12px; background: #fff; overflow: hidden; }
.logo-image img { width: 100%; height: 100%; object-fit: contain; padding: 4px; }
.logo-text { display: grid; line-height: 1.1; }
.logo-title { display: grid; }
.logo-title-zh {
  align-items: center;
  min-height: 34px;
  color: var(--color-primary-dark);
  font-size: 1.05rem;
  font-weight: 900;
  letter-spacing: .08em;
  white-space: nowrap;
}
.logo-text strong { font-size: 1.05rem; letter-spacing: .12em; color: var(--color-primary-dark); }
.logo-text small { color: var(--color-muted); font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; }
.desktop-nav { display: block; }
.nav-list { display: flex; align-items: center; gap: 10px; margin: 0; padding: 0; list-style: none; }
.nav-link { display: inline-flex; align-items: center; min-height: 44px; padding: 0 17px; border-radius: 999px; font-size: .92rem; font-weight: 750; color: #26364f; }
.nav-link:hover,
.nav-link.active,
html[data-current-nav="home"] .nav-link[data-nav="home"],
html[data-current-nav="about"] .nav-link[data-nav="about"],
html[data-current-nav="products"] .nav-link[data-nav="products"],
html[data-current-nav="applications"] .nav-link[data-nav="applications"],
html[data-current-nav="quality"] .nav-link[data-nav="quality"],
html[data-current-nav="news"] .nav-link[data-nav="news"],
html[data-current-nav="contact"] .nav-link[data-nav="contact"] { color: var(--color-primary); background: #edf4fb; }
.has-dropdown { position: relative; }
.dropdown {
  position: absolute; top: calc(100% + 14px); left: 0; min-width: 245px;
  margin: 0; padding: 12px; list-style: none; border: 1px solid var(--color-line);
  border-radius: 18px; background: #fff; box-shadow: var(--shadow-soft);
  opacity: 0; visibility: hidden; transform: translateY(8px); transition: .2s ease;
}
.has-dropdown:hover .dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown a { display: block; padding: 10px 12px; border-radius: 12px; color: #334155; font-weight: 700; }
.dropdown a:hover { background: var(--color-pale); color: var(--color-accent); }
.header-actions { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.header-quote-btn { flex-shrink: 0; }
.btn-i18n-fit {
  display: inline-grid;
  grid-template-columns: 1fr;
  grid-template-rows: 1fr;
  place-items: center;
}
.btn-i18n-fit > .lang-content {
  grid-area: 1 / 1;
  white-space: nowrap;
}
.btn-i18n-fit > .lang-content.hidden {
  display: block !important;
  visibility: hidden;
  pointer-events: none;
}
.hamburger, .mobile-nav-close {
  width: 42px; height: 42px; border: 1px solid var(--color-line); border-radius: 50%;
  background: #fff; color: var(--color-primary); display: inline-grid; place-items: center; cursor: pointer;
}
.lang-switcher { display: inline-flex; align-items: center; gap: 6px; color: var(--color-muted); font-size: .86rem; font-weight: 800; }
.lang-switch-btn { border: 0; background: transparent; color: inherit; cursor: pointer; padding: 6px; border-radius: 10px; }
.lang-switch-btn.active { color: var(--color-accent); background: rgba(237,137,54,.1); }
.hamburger { display: none; }
.hamburger svg { width: 22px; height: 22px; }
.hamburger path, .hamburger circle {
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.mobile-nav-overlay { position: fixed; inset: 0; background: rgba(15,23,42,.48); z-index: 1090; }
.mobile-nav {
  position: fixed; top: 0; right: 0; width: min(88vw, 380px); height: 100dvh; z-index: 1100;
  background: #fff; padding: 22px; box-shadow: -20px 0 60px rgba(15,23,42,.18); overflow-y: auto;
}
.mobile-nav-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }
.mobile-nav-title { font-weight: 900; color: var(--color-primary); letter-spacing: .14em; }
.mobile-nav-list { margin: 0; padding: 0; list-style: none; }
.mobile-nav-link, .mobile-sub-link { display: flex; min-height: 48px; align-items: center; border-bottom: 1px solid var(--color-line); font-weight: 800; }
.mobile-nav-link.active,
html[data-current-nav="home"] .mobile-nav-link[data-nav="home"],
html[data-current-nav="about"] .mobile-nav-link[data-nav="about"],
html[data-current-nav="products"] .mobile-nav-link[data-nav="products"],
html[data-current-nav="applications"] .mobile-nav-link[data-nav="applications"],
html[data-current-nav="quality"] .mobile-nav-link[data-nav="quality"],
html[data-current-nav="news"] .mobile-nav-link[data-nav="news"],
html[data-current-nav="contact"] .mobile-nav-link[data-nav="contact"] { color: var(--color-primary); }
.mobile-submenu { padding-left: 18px; list-style: none; }
.mobile-lang-switcher { display: flex; gap: 10px; margin-top: 24px; }

.hero { position: relative; width: 100%; background: var(--color-primary-dark); }
.hero-viewport {
  position: relative; width: 100%; min-height: 690px; overflow: hidden;
}
.hero-slider { position: relative; width: 100%; min-height: 690px; }
.hero-slide {
  position: absolute; inset: 0; width: 100%; display: flex; align-items: center;
  min-height: 690px; color: #fff; overflow: hidden;
  background: var(--slide-bg, var(--color-primary-dark));
  opacity: 0; visibility: hidden; pointer-events: none;
  transition: opacity .65s cubic-bezier(.2,.8,.2,1), visibility .65s cubic-bezier(.2,.8,.2,1);
}
.hero-slide::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(115deg, rgba(15,23,42,.86), rgba(26,54,93,.54)), var(--slide-image);
  background-size: cover;
  background-position: var(--slide-position, center);
  transform: scale(var(--slide-zoom, 1));
  transition: transform .65s cubic-bezier(.2,.8,.2,1);
}
.hero-slide-crop-x { --slide-zoom: 1.24; }
.hero-slide.is-active { opacity: 1; visibility: visible; pointer-events: auto; z-index: 1; }
.hero-slide::after {
  content: ""; position: absolute; inset: auto 0 -35% 45%; height: 420px; max-width: 100%;
  background: radial-gradient(circle, rgba(237,137,54,.38), transparent 62%); filter: blur(18px);
}
.hero-content { position: relative; z-index: 1; max-width: 780px; padding: 110px 0; }
.hero-kicker { color: #f7c38d; text-transform: uppercase; font-weight: 900; letter-spacing: .2em; }
.hero h1 { font-size: clamp(2.9rem, 7vw, 6.6rem); line-height: .93; letter-spacing: -.07em; margin: 18px 0 24px; }
html[data-lang="zh"] .hero h1 { font-size: clamp(2.5rem, 5.4vw, 5.4rem); line-height: 1.12; }
.hero p { max-width: 650px; color: rgba(255,255,255,.82); font-size: 1.15rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }
.hero-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.3);
  background: rgba(15,23,42,0.5);
  backdrop-filter: blur(8px);
  color: #fff;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: background .22s ease, border-color .22s ease, transform .22s ease;
}
.hero-nav:hover {
  background: rgba(237,137,54,0.85);
  border-color: var(--color-accent);
  transform: translateY(-50%) scale(1.08);
}
.hero-nav-prev { left: 24px; }
.hero-nav-next { right: 24px; }
.hero-nav svg { flex-shrink: 0; }

.page-banner {
  padding: 58px 0 42px; color: var(--color-text);
  background: #fff;
  border-bottom: 1px solid var(--color-line);
}
.page-banner-image {
  position: relative;
  overflow: hidden;
  color: #fff;
  background: var(--color-primary-dark);
}
.page-banner-image::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(110deg, rgba(15,23,42,.86), rgba(26,54,93,.52)), var(--page-banner-image);
  background-size: cover;
  background-position: var(--page-banner-position, center);
  transform: scale(var(--page-banner-zoom, 1));
}
.page-banner-image > * {
  position: relative;
  z-index: 1;
}
.page-banner-crop-x { --page-banner-zoom: 1.24; }
.page-banner-image p,
.page-banner-image .breadcrumb,
.page-banner-image .breadcrumb a { color: rgba(255,255,255,.86); }
.page-banner-image h1 { color: #fff; }
.page-banner h1 { font-size: clamp(2.2rem, 4vw, 3.8rem); line-height: 1.05; letter-spacing: -.05em; margin: 12px 0 10px; }
.page-banner p { max-width: 680px; color: var(--color-muted); }
.page-banner p[data-current-category-desc] { max-width: none; white-space: nowrap; }
.breadcrumb { display: flex; gap: 9px; flex-wrap: wrap; color: var(--color-muted); font-size: .93rem; }
.breadcrumb a { color: var(--color-primary); font-weight: 800; }

.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 46px; align-items: center; }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 22px; }
.applications-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; align-items: stretch; }
.img-placeholder {
  min-height: 250px; border-radius: var(--radius-lg); overflow: hidden; display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 900; letter-spacing: .08em; text-transform: uppercase;
  background: linear-gradient(135deg, #8aa0b9 0%, #d7dde5 46%, #1a365d 100%);
  box-shadow: var(--shadow-card);
}
.img-placeholder.tall { min-height: 410px; }
.media-card { background: #edf4fb; }
.media-card img {
  width: 100%; height: 100%; min-height: inherit; object-fit: cover; object-position: top left;
  display: block;
}
.card .img-placeholder.media-card {
  aspect-ratio: 1 / 1;
  min-height: 0;
  display: block;
}
.card .img-placeholder.media-card img { min-height: 0; }
.img-placeholder.media-card:has([data-product-image]) {
  display: block;
  min-height: 0;
  height: auto;
}
.img-placeholder.media-card:has([data-product-image]) img {
  width: 100%;
  height: auto;
  min-height: 0;
  object-fit: contain;
  object-position: center;
}
.tag-line { font-size: .92rem; color: var(--color-muted); }
.card {
  background: #fff; border: 1px solid var(--color-line); border-radius: var(--radius-md); overflow: hidden;
  box-shadow: 0 1px 0 rgba(15,23,42,.03); transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
}
.card .img-placeholder {
    border-radius: 0;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-card); border-color: rgba(237,137,54,.36); }
.card[data-card-clickable="true"] { cursor: pointer; }
.card[data-card-clickable="true"]:focus-visible {
  outline: 3px solid rgba(237,137,54,.35);
  outline-offset: 4px;
}
.card[data-card-clickable="true"] a,
.card[data-card-clickable="true"] button {
  cursor: pointer;
}
.card {
  display: flex;
  flex-direction: column;
}
.card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  flex: 1;
  text-align: center;
}
.card h3 {
  margin: 0 0 10px;
  color: var(--color-primary-dark);
  font-size: 1.22rem;
  line-height: 1.22;
  text-align: center;
}
.card p { margin: 0 0 8px; color: var(--color-muted); }
.card-body > .btn {
  align-self: center;
  margin-top: auto;
  position: relative;
  z-index: 1;
  transition: transform .22s ease, box-shadow .22s ease, background .22s ease, color .22s ease, border-color .22s ease;
}
.card .btn-primary:hover {
  transform: translateY(-2px);
  background: #dd6b20;
  box-shadow: 0 10px 24px rgba(237, 137, 54, .38);
}
.card .btn-primary:active {
  transform: translateY(0);
  background: #c05621;
  box-shadow: 0 4px 12px rgba(237, 137, 54, .28);
}
.card .btn-primary:focus-visible {
  outline: 3px solid rgba(237, 137, 54, .45);
  outline-offset: 3px;
}
.card:hover .card-body > .btn-primary:not(:hover):not(:active) {
  box-shadow: 0 6px 18px rgba(237, 137, 54, .22);
}
.card .btn-outline:hover {
  transform: translateY(-2px);
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: rgba(237, 137, 54, .06);
  box-shadow: 0 8px 20px rgba(26, 54, 93, .1);
}
.card .btn-outline:active {
  transform: translateY(0);
  background: rgba(237, 137, 54, .12);
}
@media (prefers-reduced-motion: reduce) {
  .card .btn-primary:hover,
  .card .btn-primary:active,
  .card .btn-outline:hover,
  .card .btn-outline:active {
    transform: none;
  }
}
.text-link { color: var(--color-accent); font-weight: 900; }
.section-head .text-link { display: inline-flex; align-items: center; white-space: nowrap; }
.stat-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 28px;
  padding: 20px 24px;
  background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
  border-radius: 16px;
  border: 1px solid var(--color-line);
}
.stat-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  background: #fff;
  border-radius: 12px;
  border: 1px solid var(--color-line);
  transition: box-shadow .22s ease, border-color .22s ease;
}
.stat-item:hover {
  box-shadow: 0 4px 16px rgba(15,23,42,.08);
  border-color: rgba(237,137,54,.25);
}
.stat-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--color-primary);
  color: #fff;
  flex-shrink: 0;
}
.stat-value {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-primary-dark);
  letter-spacing: -0.02em;
  line-height: 1;
}
.stat-label {
  font-size: 0.8rem;
  color: var(--color-muted);
  font-weight: 600;
  white-space: nowrap;
}
.advantage-header {
  margin-bottom: 48px;
}
.advantage-eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 12px;
}
.advantage-title {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--color-primary-dark);
  line-height: 1.15;
  margin: 0;
}
.advantage-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.advantage-card {
  position: relative;
  padding: 32px 26px 28px;
  background: #fff;
  border-radius: 20px;
  border: 1px solid var(--color-line);
  transition: transform .28s cubic-bezier(.2,.8,.2,1), box-shadow .28s ease, border-color .28s ease;
  overflow: hidden;
}
.advantage-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 50px rgba(15,23,42,.12);
  border-color: transparent;
}
.advantage-number {
  position: absolute;
  top: 2px;
  right: 10px;
  font-size: 4.5rem;
  font-weight: 900;
  color: rgba(26,54,93,.04);
  line-height: 1;
  pointer-events: none;
}
.advantage-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: linear-gradient(135deg, #1a365d 0%, #2d4a7c 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  margin-bottom: 20px;
  transition: transform .28s ease, background .28s ease;
}
.advantage-card:hover .advantage-icon {
  transform: scale(1.08);
  background: linear-gradient(135deg, var(--color-accent) 0%, #f6a94d 100%);
}
.advantage-card-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--color-primary-dark);
  margin: 0 0 10px;
  line-height: 1.3;
}
.advantage-card-desc {
  font-size: 0.88rem;
  color: var(--color-muted);
  line-height: 1.6;
  margin: 0;
}
.feature-card { padding: 30px; border-radius: var(--radius-md); background: #fff; border: 1px solid var(--color-line); }
.feature-icon { width: 54px; height: 54px; border-radius: 18px; display: grid; place-items: center; background: #edf4fb; color: var(--color-primary); font-size: 1.4rem; margin-bottom: 18px; }
.partner-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; }
.partner-grid-4 { grid-template-columns: repeat(4, 1fr); }
.partner-grid-5 { grid-template-columns: repeat(5, 1fr); }
.partner-logo { min-height: 78px; border: 1px solid var(--color-line); border-radius: 16px; display: grid; place-items: center; color: #7b8794; background: #fff; font-weight: 900; }
.partner-section { margin-top: 28px; }
.partner-section h3 { margin: 0 0 14px; color: var(--color-primary-dark); }
.media-logo { padding: 10px; }
.media-logo img { max-height: 54px; width: auto; object-fit: contain; }
.cta-band { border-radius: 34px; padding: 58px; background: linear-gradient(120deg, #07111f 0%, #102846 62%, var(--color-primary) 100%); color: #fff; display: flex; align-items: center; justify-content: space-between; gap: 30px; overflow: hidden; position: relative; }
.cta-band::after { content: ""; position: absolute; right: -90px; bottom: -120px; width: 360px; height: 360px; border-radius: 50%; background: rgba(237,137,54,.35); filter: blur(10px); }
.cta-band > * { position: relative; z-index: 1; }
.cta-band .eyebrow { color: #f7c38d; text-shadow: 0 1px 12px rgba(0,0,0,.32); }
.cta-band .section-title { color: #fff; text-shadow: 0 2px 18px rgba(0,0,0,.35); }
.cta-band p { max-width: 680px; color: rgba(255,255,255,.92); font-weight: 700; }
.cta-band .btn { min-height: 60px; padding: 0 40px; font-size: 1.15rem; white-space: nowrap; flex: 0 0 auto; width: max-content; }
.cta-band .btn span { white-space: nowrap; }
.faq-item { border: 1px solid var(--color-line); border-radius: 18px; margin-bottom: 12px; background: #fff; overflow: hidden; }
.faq-question { width: 100%; border: 0; background: #fff; text-align: left; padding: 20px 22px; font-weight: 900; color: var(--color-primary-dark); cursor: pointer; }
.faq-answer { padding: 0 22px 22px; color: var(--color-muted); }
.timeline { position: relative; display: grid; gap: 20px; }
.timeline::before { content: ""; position: absolute; left: 50%; top: 0; bottom: 0; width: 1px; background: var(--color-line); }
.timeline-item { width: calc(50% - 28px); padding: 24px; border-radius: 18px; background: #fff; border: 1px solid var(--color-line); box-shadow: var(--shadow-card); }
.timeline-item:nth-child(even) { margin-left: calc(50% + 28px); }
.timeline-year { color: var(--color-accent); font-weight: 900; font-size: 1.25rem; }
.sidebar-layout { display: grid; grid-template-columns: 280px 1fr; gap: 34px; align-items: start; }
.filter-sidebar { position: sticky; top: 112px; padding: 18px; border-radius: 20px; border: 1px solid var(--color-line); background: #fff; }
.filter-link, .filter-tab { display: flex; width: 100%; min-height: 46px; align-items: center; border: 0; border-radius: 14px; background: transparent; padding: 0 14px; cursor: pointer; color: #334155; font-weight: 800; }
.filter-link.active, .filter-tab.active { background: var(--color-primary); color: #fff; }
.spec-table { width: 100%; border-collapse: collapse; overflow: hidden; border-radius: 18px; }
.spec-table th, .spec-table td { border: 1px solid var(--color-line); padding: 14px 16px; text-align: left; }
.spec-table th { background: var(--color-pale); color: var(--color-primary); }
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.form-control { width: 100%; border: 1px solid var(--color-line); border-radius: 14px; padding: 14px 16px; outline: none; }
textarea.form-control { min-height: 150px; resize: vertical; grid-column: 1 / -1; }
.contact-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  width: 100%;
}
.contact-form .form-control {
  display: block;
  min-width: 0;
}
.contact-form .btn {
  width: 100%;
  justify-self: stretch;
  align-self: auto;
  margin-top: 2px;
}
.contact-form .btn:disabled {
  cursor: wait;
  opacity: .7;
  transform: none;
  box-shadow: none;
}
.form-message { margin-top: 14px; color: #15803d; font-weight: 800; }
.form-message.error { color: #b91c1c; }
.inquiry-modal {
  position: fixed;
  inset: 0;
  z-index: 1200;
  display: grid;
  place-items: center;
  padding: 24px;
  background:
    radial-gradient(circle at 50% 35%, rgba(237,137,54,.18), transparent 34%),
    rgba(15, 23, 42, .58);
  opacity: 0;
  visibility: hidden;
  transition: opacity .18s ease, visibility .18s ease;
}
.inquiry-modal.is-visible {
  opacity: 1;
  visibility: visible;
}
.inquiry-modal__panel {
  position: relative;
  width: min(460px, 100%);
  padding: 38px 34px 32px;
  border: 1px solid rgba(226,232,240,.95);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(145deg, rgba(255,255,255,.98), rgba(247,250,252,.96)),
    #fff;
  box-shadow: 0 30px 90px rgba(15,23,42,.28);
  text-align: center;
  transform: translateY(14px) scale(.98);
  transition: transform .22s cubic-bezier(.2,.8,.2,1);
}
.inquiry-modal.is-visible .inquiry-modal__panel { transform: translateY(0) scale(1); }
.inquiry-modal__close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 38px;
  height: 38px;
  border: 1px solid var(--color-line);
  border-radius: 50%;
  background: #fff;
  color: var(--color-muted);
  cursor: pointer;
  font-size: 1.5rem;
  line-height: 1;
}
.inquiry-modal__close:hover {
  color: var(--color-primary);
  border-color: rgba(26,54,93,.25);
}
.inquiry-modal__mark {
  width: 74px;
  height: 74px;
  display: grid;
  place-items: center;
  margin: 0 auto 20px;
  border-radius: 50%;
  color: #fff;
  background:
    radial-gradient(circle at 30% 25%, rgba(255,255,255,.9) 0 13%, transparent 14%),
    linear-gradient(145deg, var(--color-accent), #d96f1e);
  box-shadow: 0 18px 34px rgba(237,137,54,.32);
}
.inquiry-modal__mark svg {
  width: 40px;
  height: 40px;
}
.inquiry-modal__mark path {
  fill: none;
  stroke: currentColor;
  stroke-width: 2.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.inquiry-modal h2 {
  margin: 8px 0 10px;
  color: var(--color-primary-dark);
  font-size: clamp(1.65rem, 5vw, 2.25rem);
  line-height: 1.12;
  letter-spacing: -.04em;
}
.inquiry-modal p:not(.eyebrow) {
  margin: 0 auto 24px;
  color: var(--color-muted);
}
.inquiry-modal__confirm { min-width: 136px; }

.site-footer { background: #0f172a; color: rgba(255,255,255,.78); }
.footer-main { padding: 70px 0 48px; }
.footer-grid { display: grid; grid-template-columns: 1.35fr .8fr .9fr 1.1fr; gap: 36px; }
.footer-logo .logo-text strong, .footer-logo .logo-text small { color: #fff; }
.footer-heading { color: #fff; font-size: 1rem; font-weight: 900; margin: 0 0 18px; border: 0; background: transparent; padding: 0; }
.footer-desc { margin: 18px 0 22px; }
.social-links { display: flex; gap: 10px; flex-wrap: wrap; }
.social-link { width: 44px; height: 44px; border-radius: 50%; background: rgba(255,255,255,.08); color: #fff; display: grid; place-items: center; font-weight: 900; }
.footer-links, .footer-contact { margin: 0; padding: 0; list-style: none; display: grid; gap: 10px; }
.footer-link:hover, .footer-bottom a:hover { color: #fff; }
.footer-contact li { display: flex; gap: 10px; align-items: center; }
.contact-icon {
  width: 20px;
  height: 20px;
  display: inline-grid;
  place-items: center;
  flex-shrink: 0;
  color: currentColor;
}
.contact-icon svg {
  width: 18px;
  height: 18px;
  display: block;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.footer-subscribe { display: flex; gap: 8px; margin-top: 20px; }
.subscribe-input { min-width: 0; flex: 1; border: 0; border-radius: 999px; padding: 12px 14px; }
.subscribe-btn { border: 0; border-radius: 999px; background: var(--color-accent); color: #fff; font-weight: 900; padding: 0 16px; cursor: pointer; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); }
.footer-bottom-inner { min-height: 62px; display: flex; justify-content: space-between; align-items: center; gap: 20px; font-size: .9rem; }
.footer-bottom-links { display: flex; gap: 18px; }

@media (max-width: 1024px) {
  .desktop-nav, .header-actions .btn-sm { display: none; }
  .hamburger { display: inline-grid; }
  .grid-4, .advantage-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .sidebar-layout { grid-template-columns: 1fr; }
  .filter-sidebar { position: static; }
  .partner-grid { grid-template-columns: repeat(3, 1fr); }
  .advantage-header { margin-bottom: 36px; }
  .advantage-card { padding: 26px 22px 22px; }
}

@media (max-width: 768px) {
  .container-wide { width: min(100% - 28px, 1180px); }
  .section { padding: 66px 0; }
  .section-head, .cta-band, .footer-bottom-inner { display: block; }
  .grid-2, .grid-3, .grid-4, .applications-grid, .advantage-grid, .footer-grid, .form-grid { grid-template-columns: 1fr; }
  .stat-row { grid-template-columns: 1fr; padding: 16px 20px; }
  .stat-value { font-size: 1.15rem; }
  .stat-icon { width: 28px; height: 28px; }
  .stat-icon svg { width: 14px; height: 14px; }
  .advantage-header { margin-bottom: 28px; }
  .advantage-number { font-size: 3.5rem; top: -6px; }
  .advantage-icon { width: 48px; height: 48px; }
  .advantage-icon svg { width: 22px; height: 22px; }
  .hero-viewport, .hero-slider, .hero-slide { min-height: 620px; }
  .hero-content { padding: 76px 0; }
  .hero h1 { font-size: clamp(2.6rem, 14vw, 4.2rem); }
  html[data-lang="zh"] .hero h1 { font-size: clamp(2.15rem, 10vw, 3.55rem); line-height: 1.14; }
  .hero-slide-crop-x { --slide-zoom: 1.12; }
  .hero-nav { width: 42px; height: 42px; }
  .hero-nav-prev { left: 12px; }
  .hero-nav-next { right: 12px; }
  .page-banner-crop-x { --page-banner-zoom: 1.12; }
  .page-banner p[data-current-category-desc] { white-space: normal; }
  .header-inner { min-height: 66px; }
  .header-actions { gap: 7px; }
  .lang-switcher { display: none; }
  .img-placeholder.tall { min-height: 280px; }
  .partner-grid { grid-template-columns: repeat(2, 1fr); }
  .timeline::before { left: 0; }
  .timeline-item, .timeline-item:nth-child(even) { width: auto; margin-left: 24px; }
  .footer-accordion .accordion-trigger { width: 100%; display: flex; justify-content: space-between; padding: 14px 0; border-bottom: 1px solid rgba(255,255,255,.1); }
  .footer-accordion .accordion-panel { display: none; padding-top: 12px; }
  .footer-accordion.open .accordion-panel { display: grid; }
  .footer-subscribe { flex-direction: column; }
  .subscribe-btn { min-height: 44px; }
}