:root {
  --ink: #102033;
  --muted: #637083;
  --line: #dde5ee;
  --paper: #ffffff;
  --surface: #f5f8fb;
  --surface-2: #eef4f8;
  --blue: #0878b9;
  --blue-dark: #153b66;
  --green: #43a43d;
  --amber: #c48a2d;
  --charcoal: #17212b;
  --deep: #0d1a26;
  --steel: #aebbc8;
  --shadow: 0 18px 45px rgba(25, 45, 68, .14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(180deg, rgba(245, 248, 251, .64), rgba(255, 255, 255, 0) 360px),
    var(--paper);
  font-family: Arial, "Microsoft YaHei", "PingFang SC", sans-serif;
  line-height: 1.6;
}

body.dialog-open {
  overflow: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
select,
textarea {
  font: inherit;
}

img {
  display: block;
  max-width: 100%;
}

.site-header {
  position: fixed;
  z-index: 50;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 82px;
  padding: 0 clamp(18px, 4vw, 64px);
  background: #fff;
  border-bottom: 1px solid rgba(8, 120, 185, .18);
  box-shadow: 0 10px 28px rgba(16, 32, 51, .06);
  backdrop-filter: none;
  transition: box-shadow .2s ease, height .2s ease;
}

.site-header::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--blue-dark), var(--blue), var(--green));
}

.site-header.scrolled {
  height: 68px;
  box-shadow: 0 16px 42px rgba(16, 32, 51, .1);
}

.header-left {
  display: inline-flex;
  align-items: center;
  gap: 20px;
}

.brand img {
  width: 74px;
  height: auto;
  max-height: 56px;
  object-fit: contain;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.brand-wordmark {
  display: grid;
  gap: 1px;
  line-height: 1;
}

.brand-wordmark strong {
  color: var(--blue-dark);
  font-size: 22px;
  font-weight: 800;
}

.brand-wordmark em {
  color: var(--blue);
  font-size: 11px;
  font-style: normal;
  font-weight: 800;
  letter-spacing: 2px;
}

.language-switch {
  position: relative;
}

.language-button {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 38px;
  padding: 8px 11px;
  border: 1px solid rgba(8, 120, 185, .2);
  border-radius: 4px;
  color: var(--blue-dark);
  background: #f7fbfe;
  cursor: pointer;
  font-size: 13px;
  font-weight: 700;
}

.language-button svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
}

.language-menu {
  position: absolute;
  top: 100%;
  left: 0;
  width: 132px;
  padding: 8px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 6px;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transform: translateY(6px);
  transition: .18s ease;
}

.language-menu.open,
.language-switch:hover .language-menu {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.language-menu button {
  display: block;
  width: 100%;
  padding: 10px 11px;
  border: 0;
  border-radius: 4px;
  color: var(--muted);
  background: transparent;
  text-align: left;
  cursor: pointer;
}

.language-menu button.active,
.language-menu button:hover {
  color: var(--blue-dark);
  background: var(--surface);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.main-nav > a,
.nav-group > button {
  position: relative;
  border: 0;
  background: transparent;
  color: var(--ink);
  padding: 12px 14px;
  cursor: pointer;
  font-size: 15px;
}

.main-nav > a:hover,
.nav-group > button:hover,
.main-nav > a.active {
  color: var(--blue);
}

.main-nav > a.nav-cta {
  margin-left: 8px;
  color: #fff !important;
  background: linear-gradient(135deg, var(--blue-dark), var(--blue) 58%, #1b8f78) !important;
  border-radius: 4px;
  box-shadow: 0 10px 22px rgba(8, 120, 185, .22);
}

.main-nav > a.nav-cta:hover,
.main-nav > a.nav-cta:focus {
  color: #fff !important;
  background: linear-gradient(135deg, #0b2748, #0878b9 54%, #157464) !important;
}

.nav-group {
  position: relative;
}

.dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  width: 230px;
  padding: 8px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-4px);
  transition: .18s ease;
}

.dropdown.open,
.nav-group:hover .dropdown {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.dropdown a {
  display: block;
  padding: 11px 12px;
  color: var(--muted);
  border-radius: 4px;
}

.dropdown a:hover {
  color: var(--blue-dark);
  background: var(--surface);
}

.icon-button {
  border: 0;
  background: transparent;
  cursor: pointer;
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 10px;
}

.menu-toggle span {
  display: block;
  height: 2px;
  margin: 5px 0;
  background: var(--ink);
}

.section {
  padding: 92px 0;
}

.section-inner {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.hero {
  position: relative;
  min-height: 94vh;
  display: flex;
  align-items: center;
  padding-top: 108px;
  overflow: hidden;
  color: #fff;
  background: var(--deep);
  border-bottom: 1px solid rgba(8, 120, 185, .35);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(rgba(255, 255, 255, .07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .06) 1px, transparent 1px);
  background-size: 88px 88px, 88px 88px;
  mask-image: linear-gradient(90deg, rgba(0, 0, 0, .72), transparent 76%);
  opacity: .3;
  pointer-events: none;
}

.hero-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  background: var(--deep);
}

.hero-slide {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(13, 26, 38, .96) 0%, rgba(13, 26, 38, .82) 43%, rgba(13, 26, 38, .18) 100%),
    linear-gradient(180deg, rgba(8, 120, 185, .18), rgba(67, 164, 61, .1)),
    var(--slide-image) center / cover no-repeat;
  filter: saturate(.86) contrast(1.04);
  opacity: 0;
  transform: scale(1.03);
  transition: opacity 1.1s ease, transform 7s ease;
}

.hero-slide.active {
  opacity: 1;
  transform: scale(1);
}

.hero-slide-product {
  --slide-image: url("./assets/products/double-channel.jpeg");
}

.hero-slide-industrial {
  --slide-image: url("https://cdn.pixabay.com/photo/2017/08/10/03/15/industrial-2617615_1280.jpg");
}

.hero-slide-production {
  --slide-image: url("https://cdn.pixabay.com/photo/2019/08/15/17/56/production-4408573_1280.jpg");
}

.hero-slide-silos {
  --slide-image: url("https://cdn.pixabay.com/photo/2023/09/14/16/17/silos-8253284_640.jpg");
}

.hero::after {
  content: none;
}

.hero-inner {
  position: relative;
  z-index: 2;
  padding-bottom: 60px;
  max-width: 1180px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero .eyebrow {
  display: inline-flex;
  padding: 7px 10px;
  color: #bdeff4;
  border: 1px solid rgba(189, 239, 244, .26);
  background: rgba(255, 255, 255, .06);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 16px;
  font-size: clamp(56px, 8vw, 104px);
  line-height: .95;
  letter-spacing: 0;
  text-shadow: 0 18px 48px rgba(0, 0, 0, .32);
}

.hero h1 {
  position: relative;
  width: min(100%, 980px);
  overflow: visible;
  padding-bottom: .08em;
  animation: heroReveal .9s cubic-bezier(.2, .74, .18, 1) both;
}

.hero h1::after {
  content: none;
}

.hero-titleline {
  display: inline-flex;
  margin: -2px 0 18px;
  padding: 8px 12px;
  color: #d8f4f7;
  border-left: 3px solid #58c4db;
  background: rgba(255, 255, 255, .07);
  font-size: clamp(18px, 2.2vw, 28px);
  font-weight: 800;
  line-height: 1.2;
  animation: riseIn .8s cubic-bezier(.2, .74, .18, 1) both .12s;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(32px, 4vw, 52px);
  line-height: 1.08;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 8px;
  font-size: 20px;
  line-height: 1.25;
}

.hero-lead {
  max-width: 760px;
  color: rgba(255, 255, 255, .88);
  font-size: clamp(18px, 2vw, 24px);
  line-height: 1.65;
  animation: riseIn .8s cubic-bezier(.2, .74, .18, 1) both .2s;
}

.hero-actions,
.solution-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 30px 0;
}

.hero .hero-actions {
  animation: riseIn .8s cubic-bezier(.2, .74, .18, 1) both .3s;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 18px;
  border: 1px solid transparent;
  border-radius: 4px;
  cursor: pointer;
  font-weight: 700;
  transition: transform .18s ease, background .18s ease, border-color .18s ease, color .18s ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button.primary {
  color: #fff;
  background: linear-gradient(135deg, var(--blue), #178c7b);
  box-shadow: 0 14px 30px rgba(8, 120, 185, .22);
}

.button.primary:hover {
  background: linear-gradient(135deg, var(--blue-dark), #126f64);
}

.button.secondary {
  color: #fff;
  border-color: rgba(255, 255, 255, .54);
  background: rgba(255, 255, 255, .08);
}

.button.ghost {
  color: var(--blue-dark);
  border-color: var(--line);
  background: rgba(255, 255, 255, .86);
}

.button.full {
  width: 100%;
}

.hero-metrics {
  display: grid;
  width: min(680px, 100%);
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid rgba(255, 255, 255, .18);
  background: rgba(255, 255, 255, .07);
  backdrop-filter: blur(14px);
  animation: riseIn .8s cubic-bezier(.2, .74, .18, 1) both .4s;
}

.hero-metrics div {
  padding: 18px 22px;
  border-right: 1px solid rgba(255, 255, 255, .14);
  transition: background .25s ease, transform .25s ease;
}

.hero-metrics div:last-child {
  border-right: 0;
}

.hero-metrics div:hover {
  background: rgba(255, 255, 255, .08);
  transform: translateY(-2px);
}

.hero-metrics strong {
  display: block;
  color: #fff;
  font-size: 28px;
  line-height: 1.1;
}

.hero-metrics span {
  color: rgba(255, 255, 255, .74);
  font-size: 14px;
}

.system-strip {
  position: relative;
  z-index: 2;
  margin-top: 0;
  padding: 46px 0 72px;
  background:
    linear-gradient(180deg, #eef4f8 0%, #f8fafc 62%, #fff 100%);
}

.strip-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  background: #fff;
  border: 1px solid rgba(174, 187, 200, .5);
  border-radius: 6px;
  overflow: hidden;
  box-shadow: 0 24px 58px rgba(18, 35, 52, .1);
}

.strip-item {
  position: relative;
  display: grid;
  gap: 2px;
  min-height: 126px;
  padding: 28px;
  border-right: 1px solid var(--line);
  transition: background .18s ease, transform .18s ease;
}

.strip-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--blue), var(--green));
  opacity: 0;
  transition: opacity .18s ease;
}

.strip-item:hover {
  background: linear-gradient(180deg, #fff, var(--surface));
  transform: translateY(-2px);
}

.strip-item:hover::before {
  opacity: 1;
}

.strip-item:last-child {
  border-right: 0;
}

.strip-item span {
  color: var(--amber);
  font-weight: 700;
}

.strip-item strong {
  font-size: 22px;
}

.strip-item em {
  color: var(--muted);
  font-style: normal;
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(260px, 420px) minmax(260px, 1fr);
  gap: 48px;
  align-items: end;
  margin-bottom: 34px;
  border-left: 3px solid var(--blue);
  padding-left: 24px;
}

.reveal-on-scroll {
  --reveal-y: 22px;
  opacity: 0;
  transform: translateY(var(--reveal-y));
  transition: opacity .7s ease, transform .7s cubic-bezier(.2, .74, .18, 1);
}

.reveal-on-scroll.in-view {
  --reveal-y: 0px;
  opacity: 1;
}

.section-heading.compact {
  align-items: start;
}

.section-heading .eyebrow {
  grid-column: 1 / -1;
  margin-bottom: -36px;
}

.section-heading p:not(.eyebrow),
.section-copy {
  color: var(--muted);
  font-size: 18px;
}

.product-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 26px;
}

.filter {
  min-width: 82px;
  padding: 10px 16px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: #fff;
  cursor: pointer;
}

.filter.active,
.filter:hover {
  color: #fff;
  border-color: var(--blue);
  background: var(--blue);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.product-card {
  --reveal-y: 0px;
  --hover-y: 0px;
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 100%;
  background: linear-gradient(180deg, #fff, #fbfdff);
  border: 1px solid rgba(174, 187, 200, .44);
  border-radius: 6px;
  overflow: hidden;
  transform: translateY(calc(var(--reveal-y) + var(--hover-y)));
  transition: opacity .65s ease, transform .65s cubic-bezier(.2, .74, .18, 1), box-shadow .22s ease;
}

.product-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--blue), var(--green), var(--amber));
  opacity: .9;
}

.product-card:hover {
  --hover-y: -4px;
  box-shadow: 0 28px 64px rgba(18, 35, 52, .16);
}

.product-media {
  height: 220px;
  background:
    linear-gradient(135deg, #f7fafc, #e9f1f7);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.product-media img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 20px;
}

.product-card:nth-child(1) .product-media img,
.product-card:nth-child(2) .product-media img {
  object-fit: cover;
  padding: 0;
}

.product-card:nth-child(1) .product-media img {
  object-position: 34% 42%;
}

.product-card:nth-child(2) .product-media img {
  object-position: center;
}

.product-card:nth-child(3) .product-media img,
.product-card:nth-child(4) .product-media img {
  padding: 28px 32px;
}

.product-body {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 14px;
  padding: 20px;
}

.product-body p {
  color: var(--muted);
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.tag-row span {
  padding: 4px 8px;
  color: var(--blue-dark);
  background: #eaf4fa;
  border-radius: 4px;
  font-size: 12px;
}

.card-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: auto;
}

.card-actions .button {
  min-height: 40px;
  padding: 9px 10px;
  font-size: 14px;
}

.solution-section,
.contact-section {
  background:
    linear-gradient(180deg, var(--surface), #fff);
}

.solution-section {
  position: relative;
  overflow: hidden;
}

.solution-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(120deg, rgba(8, 120, 185, .08), transparent 38%),
    linear-gradient(90deg, transparent 0, transparent calc(100% - 1px), rgba(16, 32, 51, .05) calc(100% - 1px));
  background-size: auto, 96px 96px;
  pointer-events: none;
}

.solution-layout {
  position: relative;
}

.solution-layout,
.about-layout,
.contact-layout {
  display: grid;
  grid-template-columns: minmax(280px, .86fr) minmax(320px, 1.14fr);
  gap: clamp(36px, 6vw, 80px);
  align-items: start;
}

.process-list {
  display: grid;
  gap: 14px;
}

.process-list article {
  display: grid;
  grid-template-columns: 54px 1fr;
  column-gap: 18px;
  padding: 22px;
  background: rgba(255, 255, 255, .9);
  border: 1px solid rgba(174, 187, 200, .45);
  border-radius: 6px;
  box-shadow: 0 16px 36px rgba(18, 35, 52, .06);
}

.process-list span {
  grid-row: span 2;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  color: #fff;
  background: linear-gradient(135deg, var(--blue-dark), var(--blue));
  box-shadow: 0 12px 24px rgba(8, 120, 185, .22);
  border-radius: 50%;
  font-weight: 700;
}

.process-list p {
  color: var(--muted);
  margin-bottom: 0;
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.download-item {
  display: grid;
  gap: 16px;
  padding: 22px;
  min-height: 240px;
  background:
    linear-gradient(180deg, #fff 0%, #fff 62%, var(--surface) 100%);
  border: 1px solid rgba(174, 187, 200, .46);
  border-radius: 6px;
  box-shadow: 0 14px 34px rgba(18, 35, 52, .06);
}

.download-item span {
  color: var(--amber);
  font-weight: 700;
}

.download-item p {
  color: var(--muted);
}

.about-layout {
  align-items: center;
}

.about-media {
  background:
    linear-gradient(135deg, #0c1925, #17364b 58%, #1d4f53);
  border-radius: 6px;
  overflow: hidden;
  box-shadow: 0 30px 70px rgba(13, 26, 38, .2);
}

.about-media img {
  width: 100%;
  aspect-ratio: 1.15 / 1;
  object-fit: cover;
  padding: 0;
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 28px;
}

.value-grid div {
  padding-top: 16px;
  border-top: 2px solid var(--line);
}

.value-grid strong,
.value-grid span {
  display: block;
}

.value-grid span {
  color: var(--muted);
  font-size: 14px;
}

.contact-lines {
  display: grid;
  gap: 8px;
  margin-top: 28px;
}

.contact-lines a {
  color: var(--blue-dark);
  font-weight: 700;
}

.contact-form {
  display: grid;
  gap: 16px;
  padding: 26px;
  background: #fff;
  border: 1px solid rgba(174, 187, 200, .48);
  border-radius: 6px;
  box-shadow: 0 24px 60px rgba(30, 48, 69, .1);
}

.contact-form label {
  display: grid;
  gap: 6px;
}

.contact-form span {
  font-weight: 700;
  font-size: 14px;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 12px 13px;
  color: var(--ink);
  background: #fff;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: 2px solid rgba(8, 120, 185, .22);
  border-color: var(--blue);
}

.form-output {
  display: none;
  padding: 14px;
  color: var(--blue-dark);
  background: #eaf4fa;
  border: 1px solid #b8dbea;
  border-radius: 4px;
  white-space: pre-line;
}

.form-output.show {
  display: block;
}

.site-footer {
  padding: 20px 0;
  color: #dce7f1;
  background: var(--charcoal);
}

.footer-layout {
  display: grid;
  grid-template-columns: 44px 1fr auto;
  gap: 16px;
  align-items: center;
}

.footer-layout img {
  width: 44px;
  height: auto;
  max-height: 42px;
  object-fit: contain;
}

.footer-layout strong,
.footer-layout span {
  display: block;
}

.footer-layout a {
  color: #fff;
  font-weight: 700;
}

dialog {
  width: min(980px, calc(100% - 32px));
  max-height: min(820px, calc(100vh - 32px));
  padding: 0;
  border: 0;
  border-radius: 8px;
  box-shadow: 0 30px 90px rgba(8, 22, 38, .34);
}

dialog::backdrop {
  background: rgba(8, 20, 32, .62);
  backdrop-filter: blur(3px);
}

.dialog-close {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 2;
  width: 38px;
  height: 38px;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--ink);
  background: #fff;
  cursor: pointer;
  font-size: 24px;
  line-height: 1;
}

.dialog-product {
  display: grid;
  grid-template-columns: .92fr 1.08fr;
  min-height: 520px;
}

.dialog-product-media {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface);
  border-right: 1px solid var(--line);
}

.dialog-product-media img {
  width: 100%;
  height: 100%;
  max-height: 540px;
  object-fit: contain;
  padding: 32px;
}

.dialog-product-content {
  padding: 44px 40px;
  overflow: auto;
}

.spec-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin: 22px 0;
}

.spec-list div {
  padding: 12px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 4px;
}

.spec-list dt {
  color: var(--muted);
  font-size: 13px;
}

.spec-list dd {
  margin: 0;
  font-weight: 700;
}

.bullet-list {
  padding-left: 18px;
  color: var(--muted);
}

.comparison-dialog {
  padding: 34px;
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 680px;
}

th,
td {
  padding: 14px 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--blue-dark);
  background: var(--surface);
}

@keyframes heroReveal {
  from {
    opacity: 0;
    transform: translateY(20px);
    filter: blur(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0);
  }
}

@keyframes riseIn {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
  }

  .reveal-on-scroll {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 980px) {
  .site-header {
    height: 70px;
  }

  .menu-toggle {
    display: block;
  }

  .main-nav {
    position: fixed;
    inset: 70px 0 auto 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 18px;
    background: #fff;
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow);
  }

  .main-nav.open {
    display: flex;
  }

  .main-nav > a,
  .nav-group > button {
    width: 100%;
    text-align: left;
  }

  .nav-cta {
    margin-left: 0;
  }

  .dropdown {
    position: static;
    display: none;
    width: 100%;
    box-shadow: none;
    opacity: 1;
    pointer-events: auto;
    transform: none;
  }

  .dropdown.open {
    display: block;
  }

  .section-heading,
  .solution-layout,
  .about-layout,
  .contact-layout,
  .dialog-product {
    grid-template-columns: 1fr;
  }

  .section-heading .eyebrow {
    grid-column: auto;
    margin-bottom: -10px;
  }

  .product-grid,
  .download-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .strip-grid {
    grid-template-columns: 1fr;
  }

  .strip-item {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .strip-item:last-child {
    border-bottom: 0;
  }

  .dialog-product-media {
    min-height: 310px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
}

@media (max-width: 640px) {
  .brand img {
    width: 62px;
  }

  .brand-wordmark strong {
    font-size: 19px;
  }

  .brand-wordmark em {
    font-size: 10px;
  }

  .section {
    padding: 68px 0;
  }

  .hero {
    min-height: 86vh;
  }

  .hero-metrics,
  .product-grid,
  .download-grid,
  .value-grid,
  .card-actions,
  .spec-list {
    grid-template-columns: 1fr;
  }

  .footer-layout {
    grid-template-columns: 44px 1fr auto;
    gap: 12px;
  }

  .hero-metrics div {
    padding: 14px 0;
    border-bottom: 1px solid rgba(255, 255, 255, .16);
  }

  .hero-metrics div:last-child {
    border-bottom: 0;
  }

  .process-list article {
    grid-template-columns: 1fr;
  }

  .process-list span {
    grid-row: auto;
    margin-bottom: 12px;
  }

  .dialog-product-content,
  .comparison-dialog {
    padding: 30px 20px;
  }
}