:root {
  --black: #161616;
  --black-hover: #292929;
  --navy: #07305d;
  --navy-strong: #041f3d;
  --navy-soft: #174b7a;
  --gray-100: #262626;
  --gray-90: #393939;
  --gray-80: #525252;
  --gray-70: #6f6f6f;
  --gray-50: #8d8d8d;
  --gray-30: #c6c6c6;
  --gray-20: #e0e0e0;
  --gray-10: #f4f4f4;
  --white: #ffffff;
  --blue: #0f62fe;
  --pool-blue: #087cca;
  --pool-cyan: #11b7df;
  --pool-aqua: #7ee7ef;
  --pool-sky: #e9f8ff;
  --pool-sky-2: #f6fcff;
  --blue-hover: #0353e9;
  --blue-active: #002d9c;
  --blue-soft: #edf5ff;
  --danger: #da1e28;
  --success: #198038;
  --focus: #0f62fe;
  --font-sans: "Segoe UI Variable", "Aptos", "Segoe UI", Arial, Helvetica, sans-serif;
  --font-display: "Segoe UI Variable Display", "Aptos Display", "Segoe UI", Arial, Helvetica, sans-serif;
  --max-width: 1440px;
  --header-height: 72px;
  --soft-shadow: 0 24px 70px rgba(7, 48, 93, .12);
  --card-shadow: 0 14px 40px rgba(7, 48, 93, .08);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  margin: 0;
  color: var(--black);
  background: var(--white);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3 {
  font-family: var(--font-display);
}

body.dialog-open {
  overflow: hidden;
}

button,
input,
textarea {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  color: inherit;
}

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

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

p,
h1,
h2,
h3,
dl,
dd {
  margin: 0;
}

ul {
  margin: 0;
  padding: 0;
}

[hidden] {
  display: none !important;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 0;
  left: 0;
  padding: 12px 16px;
  color: var(--white);
  background: var(--blue);
  transform: translateY(-120%);
}

.skip-link:focus {
  transform: translateY(0);
}

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.site-header {
  position: fixed;
  z-index: 100;
  top: 0;
  right: 0;
  left: 0;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  min-height: var(--header-height);
  padding: 0 max(24px, calc((100vw - var(--max-width)) / 2 + 32px));
  color: var(--navy);
  background: color-mix(in srgb, var(--white) 92%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--navy) 10%, transparent);
  box-shadow: 0 6px 24px color-mix(in srgb, var(--navy) 7%, transparent);
  backdrop-filter: blur(16px);
}

.brand {
  display: grid;
  width: 126px;
  height: var(--header-height);
  padding: 7px 0;
  place-items: center;
}

.brand img {
  width: 76px;
  height: 54px;
  object-fit: contain;
}

.site-nav {
  display: flex;
  justify-content: flex-end;
  align-items: stretch;
}

.site-nav a {
  display: grid;
  min-width: 112px;
  padding: 0 20px;
  place-items: center;
  border-left: 0;
  color: var(--navy-soft);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .01em;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--pool-blue);
  background: var(--pool-sky-2);
}

.header-cta {
  display: inline-grid;
  min-width: 164px;
  min-height: 44px;
  margin-left: 20px;
  padding: 0 22px;
  color: var(--white);
  background: var(--pool-blue);
  place-items: center;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
}

.header-cta:hover {
  background: var(--navy);
}

.nav-toggle {
  display: none;
  width: var(--header-height);
  border: 0;
  border-left: 1px solid var(--gray-20);
  background: var(--white);
  cursor: pointer;
  place-content: center;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--navy);
  transition: transform 160ms ease, opacity 160ms ease;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.hero {
  position: relative;
  min-height: 740px;
  padding-top: var(--header-height);
  overflow: hidden;
  color: var(--navy-strong);
  background:
    radial-gradient(circle at 86% 16%, color-mix(in srgb, var(--pool-aqua) 25%, transparent) 0, transparent 27%),
    linear-gradient(128deg, var(--white) 0%, var(--pool-sky-2) 48%, var(--pool-sky) 100%);
}

.hero::before,
.hero::after {
  position: absolute;
  content: "";
  pointer-events: none;
}

.hero::before {
  right: -15vw;
  bottom: -40vw;
  width: 78vw;
  height: 78vw;
  border: 1px solid color-mix(in srgb, var(--pool-blue) 12%, transparent);
  border-radius: 50%;
}

.hero::after {
  right: 10%;
  bottom: -3px;
  left: 10%;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--pool-cyan), transparent);
}

.hero-shell {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(520px, 1.1fr);
  align-items: center;
  max-width: var(--max-width);
  min-height: calc(740px - var(--header-height));
  margin: 0 auto;
  padding: 54px 48px 64px;
  gap: clamp(36px, 6vw, 96px);
}

.hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: 680px;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
  color: var(--pool-blue);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .09em;
  text-transform: uppercase;
}

.eyebrow span {
  width: 32px;
  height: 2px;
  background: var(--pool-cyan);
}

.hero h1 {
  max-width: 660px;
  font-size: clamp(42px, 4.4vw, 64px);
  font-weight: 680;
  line-height: 1.08;
  letter-spacing: -.04em;
  text-wrap: balance;
}

.hero-lead {
  max-width: 610px;
  margin-top: 24px;
  color: var(--navy-soft);
  font-size: clamp(17px, 1.35vw, 20px);
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  min-height: 52px;
  padding: 0 24px;
  justify-content: center;
  align-items: center;
  gap: 28px;
  border: 1px solid transparent;
  border-radius: 12px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  transition: background-color 140ms ease, border-color 140ms ease, color 140ms ease;
}

.button-primary {
  color: var(--white);
  background: var(--pool-blue);
  box-shadow: 0 12px 28px color-mix(in srgb, var(--pool-blue) 24%, transparent);
}

.button-primary:hover {
  background: var(--navy);
}

.button-ghost {
  color: var(--navy);
  background: color-mix(in srgb, var(--white) 76%, transparent);
  border-color: color-mix(in srgb, var(--navy) 18%, transparent);
}

.button-ghost:hover {
  color: var(--pool-blue);
  background: var(--white);
  border-color: var(--pool-blue);
}

.button-light {
  color: var(--black);
  background: var(--white);
}

.button-light:hover {
  background: var(--gray-20);
}

.button-outline {
  color: var(--black);
  background: transparent;
  border-color: var(--gray-80);
}

.button-outline:hover {
  background: var(--gray-10);
}

.hero-facts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  max-width: 660px;
  margin-top: 38px;
  padding-top: 22px;
  border-top: 1px solid color-mix(in srgb, var(--navy) 13%, transparent);
}

.hero-facts div {
  padding: 0 18px 0 0;
  border-right: 1px solid color-mix(in srgb, var(--navy) 13%, transparent);
}

.hero-facts div + div {
  padding-left: 20px;
}

.hero-facts dt {
  color: var(--pool-blue);
  font-size: 12px;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.hero-facts dd {
  margin-top: 6px;
  color: var(--navy);
  font-size: 14px;
  font-weight: 600;
}

.hero-showcase {
  position: relative;
  min-height: 560px;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--pool-blue) 12%, transparent);
  border-radius: 32px;
  background:
    linear-gradient(color-mix(in srgb, var(--white) 58%, transparent), color-mix(in srgb, var(--white) 30%, transparent)),
    radial-gradient(circle at 68% 36%, var(--white) 0, color-mix(in srgb, var(--pool-sky) 72%, transparent) 55%, transparent 76%);
  box-shadow: var(--soft-shadow);
  isolation: isolate;
}

.hero-showcase::before {
  position: absolute;
  right: -12%;
  bottom: -26%;
  width: 76%;
  height: 48%;
  border-radius: 50%;
  background: color-mix(in srgb, var(--pool-cyan) 14%, transparent);
  filter: blur(3px);
  content: "";
}

.hero-water-ring {
  position: absolute;
  z-index: -1;
  border: 1px solid color-mix(in srgb, var(--pool-blue) 18%, transparent);
  border-radius: 50%;
}

.ring-one {
  top: 46px;
  right: 36px;
  width: 350px;
  height: 350px;
}

.ring-two {
  top: 112px;
  right: 104px;
  width: 218px;
  height: 218px;
}

.hero-catalog-badge {
  position: absolute;
  z-index: 6;
  top: 28px;
  left: 28px;
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 13px;
  color: var(--navy);
  background: color-mix(in srgb, var(--white) 82%, transparent);
  border: 1px solid color-mix(in srgb, var(--navy) 12%, transparent);
  border-radius: 999px;
  backdrop-filter: blur(10px);
  font-size: 10px;
  letter-spacing: .12em;
}

.hero-catalog-badge strong {
  color: var(--pool-blue);
  font-size: 12px;
}

.hero-showcase img {
  position: absolute;
  object-fit: contain;
  filter: drop-shadow(0 18px 18px color-mix(in srgb, var(--navy) 18%, transparent));
}

.hero-filter {
  z-index: 3;
  top: 48px;
  right: 92px;
  width: 330px;
  height: 458px;
}

.hero-pump {
  z-index: 4;
  right: 0;
  bottom: 46px;
  width: 310px;
  height: 220px;
}

.hero-treatment {
  z-index: 4;
  bottom: 34px;
  left: 18px;
  width: 230px;
  height: 190px;
}

.hero-product-label {
  position: absolute;
  z-index: 7;
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 8px 12px;
  color: var(--navy);
  background: color-mix(in srgb, var(--white) 86%, transparent);
  border: 1px solid color-mix(in srgb, var(--navy) 11%, transparent);
  border-radius: 10px;
  box-shadow: var(--card-shadow);
  backdrop-filter: blur(10px);
  font-size: 11px;
}

.hero-product-label span {
  color: var(--pool-blue);
  font-weight: 700;
}

.label-filter {
  top: 100px;
  right: 20px;
}

.label-pump {
  right: 26px;
  bottom: 26px;
}

.label-treatment {
  bottom: 28px;
  left: 24px;
}

.section-code {
  color: var(--blue);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.section-code-light {
  color: var(--gray-30);
}

.commitment-strip {
  display: grid;
  grid-template-columns: 220px 1fr;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 88px 48px;
}

.commitment-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--gray-30);
  border-left: 1px solid var(--gray-30);
}

.commitment-grid article {
  min-height: 260px;
  padding: 24px;
  border-right: 1px solid var(--gray-30);
  border-bottom: 1px solid var(--gray-30);
}

.commitment-number {
  display: block;
  color: var(--blue);
  font-size: 13px;
  font-weight: 600;
}

.commitment-grid h2 {
  margin-top: 64px;
  font-size: 21px;
  font-weight: 500;
  line-height: 1.25;
}

.commitment-grid p {
  margin-top: 16px;
  color: var(--gray-70);
  font-size: 14px;
}

.catalog-section {
  padding: 96px max(32px, calc((100vw - var(--max-width)) / 2 + 48px));
  background: var(--pool-sky-2);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 440px);
  gap: 64px;
  align-items: end;
}

.section-heading h2,
.partner-copy h2,
.service-title h2,
.contact-heading h2,
.inquiry-intro h2 {
  max-width: 800px;
  margin-top: 18px;
  font-size: clamp(36px, 4.2vw, 60px);
  font-weight: 400;
  line-height: 1.08;
  letter-spacing: -.025em;
}

.section-heading > p {
  color: var(--gray-70);
  font-size: 17px;
}

.catalog-notice {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 20px;
  align-items: center;
  margin-top: 48px;
  padding: 20px 24px;
  color: var(--black);
  background: var(--white);
  border: 1px solid color-mix(in srgb, var(--pool-blue) 16%, transparent);
  border-left: 4px solid var(--pool-blue);
  border-radius: 14px;
  box-shadow: var(--card-shadow);
}

.notice-mark {
  display: grid;
  width: 24px;
  height: 24px;
  color: var(--white);
  background: var(--pool-blue);
  border-radius: 50%;
  place-items: center;
  font-size: 14px;
  font-weight: 700;
}

.catalog-notice p {
  margin-top: 3px;
  color: var(--gray-70);
  font-size: 14px;
}

.catalog-notice a {
  color: var(--blue);
  font-size: 14px;
  font-weight: 600;
}

.catalog-notice a:hover {
  text-decoration: underline;
}

.catalog-controls {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: end;
  margin-top: 56px;
  border-bottom: 1px solid var(--gray-30);
}

.category-filters {
  display: flex;
  min-width: 0;
  overflow-x: auto;
  scrollbar-width: thin;
}

.filter-button {
  flex: 0 0 auto;
  min-height: 48px;
  padding: 0 18px;
  border: 0;
  border-bottom: 3px solid transparent;
  color: var(--gray-70);
  background: transparent;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
}

.filter-button:hover {
  color: var(--black);
  background: var(--gray-20);
}

.filter-button.is-active {
  color: var(--black);
  border-bottom-color: var(--blue);
}

.catalog-search {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  min-height: 48px;
  background: var(--white);
  border-bottom: 1px solid var(--gray-80);
  width: min(100%, 380px);
  justify-self: end;
}

.catalog-search svg {
  width: 20px;
  height: 20px;
  margin-left: 16px;
  fill: currentColor;
}

.catalog-search input {
  width: 100%;
  height: 48px;
  padding: 0 16px;
  border: 0;
  outline: 0;
  color: var(--black);
  background: transparent;
}

.catalog-search:focus-within {
  outline: 2px solid var(--focus);
  outline-offset: -2px;
}

.catalog-meta {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  margin-top: 24px;
  color: var(--gray-70);
  font-size: 13px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
  margin-top: 24px;
  background: transparent;
  border: 0;
}

.catalog-group-heading {
  display: flex;
  grid-column: 1 / -1;
  align-items: center;
  gap: 12px;
  margin-top: 20px;
  padding: 16px 2px 4px;
  color: var(--navy);
  border-top: 1px solid color-mix(in srgb, var(--navy) 13%, transparent);
}

.catalog-group-heading:first-child {
  margin-top: 0;
  border-top: 0;
}

.catalog-group-heading span {
  display: grid;
  width: 32px;
  height: 32px;
  color: var(--white);
  background: var(--pool-blue);
  border-radius: 50%;
  place-items: center;
  font-size: 11px;
  font-weight: 700;
}

.catalog-group-heading strong {
  font-size: 18px;
}

.product-card {
  display: flex;
  min-width: 0;
  min-height: 570px;
  flex-direction: column;
  background: var(--white);
  border: 1px solid color-mix(in srgb, var(--navy) 10%, transparent);
  border-radius: 18px;
  box-shadow: var(--card-shadow);
  overflow: hidden;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.product-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--soft-shadow);
}

.product-media {
  position: relative;
  display: grid;
  min-height: 310px;
  overflow: hidden;
  background: linear-gradient(145deg, var(--white), var(--pool-sky-2));
  place-items: center;
}

.product-media::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 1px;
  background: color-mix(in srgb, var(--navy) 9%, transparent);
  content: "";
}

.product-card[data-product-id="pump-ws"] .product-media::before,
.product-dialog[data-product-id="pump-ws"] .dialog-media::before {
  position: absolute;
  z-index: 4;
  top: 43%;
  left: 53%;
  display: grid;
  width: 72px;
  height: 26px;
  color: var(--white);
  background: var(--blue);
  border: 2px solid var(--white);
  content: "HUIYUAN";
  place-items: center;
  font-size: 8px;
  font-weight: 700;
  letter-spacing: .04em;
  transform: translate(-50%, -50%);
}

.product-dialog[data-product-id="pump-ws"] .dialog-media::before {
  top: 51%;
  width: 116px;
  height: 48px;
  font-size: 11px;
}

.product-card[data-product-id="disinfection-monitor-250"] .product-media::before,
.product-dialog[data-product-id="disinfection-monitor-250"] .dialog-media::before {
  position: absolute;
  z-index: 4;
  top: 20%;
  left: 50%;
  display: grid;
  width: 62%;
  height: 40px;
  padding: 0 8px;
  color: var(--white);
  background: var(--blue);
  border: 2px solid var(--white);
  content: "HUIYUAN 250  ·  ORP / pH";
  place-items: center;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: .04em;
  text-align: center;
  transform: translate(-50%, -50%);
}

.product-dialog[data-product-id="disinfection-monitor-250"] .dialog-media::before {
  top: 34%;
  width: 84%;
  height: 62px;
  font-size: 13px;
}

.product-card[data-product-id="heating-st-pcb"] .product-media::before,
.product-dialog[data-product-id="heating-st-pcb"] .dialog-media::before {
  position: absolute;
  z-index: 4;
  top: 49%;
  left: 39%;
  display: grid;
  width: 72px;
  height: 58px;
  padding: 5px;
  color: var(--white);
  background: var(--blue);
  border: 2px solid var(--white);
  content: "HUIYUAN\A POOL HEATER";
  place-items: center;
  font-size: 8px;
  font-weight: 700;
  line-height: 1.25;
  text-align: center;
  white-space: pre;
  transform: translate(-50%, -50%);
}

.product-dialog[data-product-id="heating-st-pcb"] .dialog-media::before {
  top: 48%;
  left: 33%;
  width: 108px;
  height: 92px;
  font-size: 11px;
}

.product-card[data-product-id^="heating-st-"]:not([data-product-id="heating-st-pcb"]) .product-media::before,
.product-dialog[data-product-id^="heating-st-"]:not([data-product-id="heating-st-pcb"]) .dialog-media::before {
  position: absolute;
  z-index: 4;
  top: 51%;
  left: 50%;
  display: grid;
  width: 66%;
  height: 34px;
  color: var(--white);
  background: var(--pool-blue);
  border: 2px solid var(--white);
  content: "HUIYUAN · POOL HEATING";
  place-items: center;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: .06em;
  transform: translate(-50%, -50%);
}

.product-dialog[data-product-id^="heating-st-"]:not([data-product-id="heating-st-pcb"]) .dialog-media::before {
  width: 74%;
  height: 52px;
  font-size: 12px;
}

.product-media img {
  width: 84%;
  height: 250px;
  object-fit: contain;
  transition: transform 240ms ease;
}

.product-card:hover .product-media img {
  transform: scale(1.035);
}

.product-category,
.product-series {
  position: absolute;
  z-index: 2;
  top: 16px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.product-category {
  left: 16px;
  max-width: 70%;
  color: var(--gray-70);
}

.product-series {
  right: 16px;
  color: var(--blue);
}

.product-body {
  display: flex;
  min-height: 270px;
  padding: 24px;
  flex: 1;
  flex-direction: column;
}

.product-order {
  margin-bottom: 8px;
  color: var(--pool-blue);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .07em;
  text-transform: uppercase;
}

.product-body h3 {
  font-size: 22px;
  font-weight: 500;
  line-height: 1.25;
}

.product-summary {
  display: -webkit-box;
  margin-top: 12px;
  overflow: hidden;
  color: var(--gray-70);
  font-size: 14px;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}

.product-models {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-top: 18px;
}

.model-tag {
  padding: 4px 8px;
  color: var(--gray-80);
  background: var(--gray-10);
  font-size: 11px;
}

.model-tag-more {
  color: var(--blue);
}

.product-actions {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: center;
  margin-top: auto;
  padding-top: 24px;
}

.text-button,
.quote-button {
  min-height: 44px;
  border-radius: 10px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
}

.text-button {
  display: inline-flex;
  padding: 0;
  justify-content: flex-start;
  align-items: center;
  gap: 16px;
  border: 0;
  color: var(--blue);
  background: transparent;
}

.text-button:hover {
  text-decoration: underline;
}

.quote-button {
  padding: 0 16px;
  border: 1px solid color-mix(in srgb, var(--navy) 20%, transparent);
  color: var(--navy);
  background: var(--pool-sky-2);
}

.quote-button:hover {
  color: var(--white);
  background: var(--pool-blue);
  border-color: var(--pool-blue);
}

.empty-state,
.noscript-message {
  margin-top: 24px;
  padding: 48px 24px;
  text-align: center;
  background: var(--white);
  border: 1px solid var(--gray-30);
}

.empty-state p {
  margin-top: 8px;
  color: var(--gray-70);
}

.partner-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(500px, 1fr);
  min-height: 720px;
  color: var(--white);
  background: var(--black);
}

.partner-copy {
  padding: 104px clamp(32px, 6vw, 104px) 104px max(32px, calc((100vw - var(--max-width)) / 2 + 48px));
}

.partner-copy h2 {
  color: var(--white);
}

.partner-lead {
  max-width: 680px;
  margin-top: 28px;
  color: var(--gray-30);
  font-size: 18px;
}

.check-list {
  display: grid;
  margin: 36px 0 40px;
  list-style: none;
  border-top: 1px solid var(--gray-80);
}

.check-list li {
  position: relative;
  padding: 16px 16px 16px 36px;
  border-bottom: 1px solid var(--gray-80);
  color: var(--gray-20);
}

.check-list li::before {
  position: absolute;
  left: 4px;
  color: var(--blue);
  content: "+";
  font-weight: 600;
}

.system-map {
  position: relative;
  min-height: 720px;
  overflow: hidden;
  color: var(--black);
  background: var(--gray-10);
  border-left: 1px solid var(--gray-80);
  background-image: linear-gradient(var(--gray-20) 1px, transparent 1px), linear-gradient(90deg, var(--gray-20) 1px, transparent 1px);
  background-size: 64px 64px;
}

.system-map::before,
.system-map::after {
  position: absolute;
  top: 50%;
  left: 50%;
  border: 1px solid var(--gray-30);
  border-radius: 50%;
  content: "";
  transform: translate(-50%, -50%);
}

.system-map::before {
  width: 68%;
  aspect-ratio: 1;
}

.system-map::after {
  width: 46%;
  aspect-ratio: 1;
}

.system-map-center {
  position: absolute;
  z-index: 2;
  top: 50%;
  left: 50%;
  display: grid;
  width: 210px;
  height: 210px;
  padding: 28px;
  background: var(--white);
  border: 1px solid var(--gray-30);
  place-items: center;
  transform: translate(-50%, -50%);
}

.system-map-center img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.system-node {
  position: absolute;
  z-index: 3;
  width: 190px;
  padding: 16px;
  background: var(--white);
  border-left: 3px solid var(--blue);
}

.system-node span,
.system-node strong {
  display: block;
}

.system-node span {
  color: var(--blue);
  font-size: 11px;
}

.system-node strong {
  margin-top: 5px;
  font-size: 14px;
}

.node-a { top: 14%; left: 9%; }
.node-b { top: 15%; right: 8%; }
.node-c { right: 8%; bottom: 15%; }
.node-d { bottom: 14%; left: 9%; }

.service-section {
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  gap: 72px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 104px 48px;
}

.service-title h2 {
  font-size: clamp(36px, 4vw, 56px);
}

.service-steps {
  border-top: 1px solid var(--gray-30);
}

.service-steps article {
  display: grid;
  grid-template-columns: 48px 160px 1fr;
  gap: 24px;
  align-items: start;
  padding: 28px 0;
  border-bottom: 1px solid var(--gray-30);
}

.service-steps article > span {
  color: var(--blue);
  font-size: 12px;
  font-weight: 600;
}

.service-steps h3 {
  font-size: 20px;
  font-weight: 500;
}

.service-steps p {
  color: var(--gray-70);
  font-size: 14px;
}

.contact-hub {
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  gap: 72px;
  padding: 96px max(32px, calc((100vw - var(--max-width)) / 2 + 48px));
  color: var(--white);
  background: var(--gray-100);
}

.contact-heading h2 {
  color: var(--white);
  font-size: clamp(38px, 4vw, 56px);
}

.contact-heading > p:last-child {
  max-width: 540px;
  margin-top: 24px;
  color: var(--gray-30);
}

.channel-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--gray-80);
  border: 1px solid var(--gray-80);
}

.channel-card {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 16px;
  align-items: center;
  min-height: 130px;
  padding: 24px;
  background: var(--black);
  transition: background-color 140ms ease;
}

.channel-card:hover {
  background: var(--blue);
}

.channel-icon {
  display: grid;
  width: 44px;
  height: 44px;
  color: var(--black);
  background: var(--white);
  place-items: center;
  font-size: 20px;
  font-weight: 700;
}

.channel-card small,
.channel-card strong {
  display: block;
}

.channel-card small {
  color: var(--gray-50);
  font-size: 11px;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.channel-card:hover small {
  color: var(--blue-soft);
}

.channel-card strong {
  margin-top: 5px;
  font-size: 16px;
  font-weight: 500;
}

.channel-card b {
  font-size: 20px;
  font-weight: 400;
}

.inquiry-section {
  display: grid;
  grid-template-columns: minmax(320px, .72fr) minmax(520px, 1.28fr);
  gap: 88px;
  padding: 104px max(32px, calc((100vw - var(--max-width)) / 2 + 48px));
  background: var(--white);
}

.inquiry-intro > p:nth-of-type(2) {
  max-width: 540px;
  margin-top: 24px;
  color: var(--gray-70);
  font-size: 17px;
}

.inquiry-direct {
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid var(--gray-30);
}

.inquiry-direct span,
.inquiry-direct a {
  display: block;
}

.inquiry-direct span {
  color: var(--gray-70);
  font-size: 12px;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.inquiry-direct a {
  margin-top: 8px;
  color: var(--blue);
  overflow-wrap: anywhere;
  font-weight: 600;
}

.inquiry-form {
  padding: 32px;
  background: var(--gray-10);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.form-row + .form-row,
.field-message {
  margin-top: 24px;
}

.field {
  display: block;
}

.field > span {
  display: block;
  margin-bottom: 8px;
  font-size: 13px;
  font-weight: 600;
}

.field b {
  color: var(--danger);
}

.field input,
.field textarea {
  display: block;
  width: 100%;
  padding: 12px 16px;
  border: 0;
  border-bottom: 1px solid var(--gray-80);
  border-radius: 0;
  color: var(--black);
  background: var(--white);
  outline: 0;
}

.field input {
  min-height: 52px;
}

.field textarea {
  min-height: 152px;
  resize: vertical;
}

.field input:focus,
.field textarea:focus {
  outline: 2px solid var(--focus);
  outline-offset: -2px;
}

.field input[aria-invalid="true"],
.field textarea[aria-invalid="true"] {
  border-bottom: 2px solid var(--danger);
}

.field-error {
  display: block;
  min-height: 18px;
  margin-top: 5px;
  color: var(--danger);
  font-size: 12px;
}

.honeypot {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.consent-field {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 10px;
  align-items: start;
  margin-top: 20px;
  color: var(--gray-70);
  cursor: pointer;
  font-size: 13px;
}

.consent-field input {
  width: 18px;
  height: 18px;
  margin: 1px 0 0;
  accent-color: var(--blue);
}

.consent-error {
  margin-left: 28px;
}

.form-submit-row {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: center;
  margin-top: 16px;
  padding-top: 24px;
  border-top: 1px solid var(--gray-30);
}

.form-submit-row p {
  color: var(--gray-70);
  font-size: 12px;
  text-align: right;
}

.form-submit[disabled] {
  cursor: wait;
  opacity: .65;
}

.form-status {
  margin-top: 20px;
  padding: 14px 16px;
  border-left: 4px solid var(--blue);
  background: var(--blue-soft);
  font-size: 14px;
}

.form-status.is-error {
  border-left-color: var(--danger);
  background: var(--white);
  color: var(--danger);
}

.form-status.is-success {
  border-left-color: var(--success);
  background: var(--white);
  color: var(--success);
}

.site-footer {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.3fr;
  gap: 64px;
  padding: 72px max(32px, calc((100vw - var(--max-width)) / 2 + 48px)) 24px;
  color: var(--gray-30);
  background: var(--black);
}

.footer-brand img {
  width: 132px;
  height: 118px;
  padding: 8px;
  object-fit: contain;
  background: var(--white);
}

.footer-brand p {
  margin-top: 20px;
  color: var(--gray-50);
}

.footer-column {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-column strong {
  margin-bottom: 10px;
  color: var(--white);
  font-size: 13px;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.footer-column a {
  color: var(--gray-30);
  font-size: 14px;
}

.footer-column a:hover {
  color: var(--white);
  text-decoration: underline;
}

.footer-bottom {
  display: flex;
  grid-column: 1 / -1;
  justify-content: space-between;
  gap: 20px;
  margin-top: 32px;
  padding-top: 20px;
  border-top: 1px solid var(--gray-80);
  color: var(--gray-50);
  font-size: 12px;
}

.quick-contact {
  position: fixed;
  z-index: 80;
  right: 16px;
  bottom: 24px;
  display: grid;
  gap: 1px;
  background: var(--gray-30);
  border: 1px solid var(--gray-30);
}

.quick-contact a {
  display: grid;
  width: 50px;
  min-height: 50px;
  color: var(--white);
  background: var(--black);
  place-items: center;
  font-size: 13px;
  font-weight: 700;
}

.quick-contact a:hover {
  background: var(--blue);
}

.quick-contact .quick-quote {
  height: 72px;
  padding: 4px;
  background: var(--blue);
  font-size: 11px;
  line-height: 1.15;
  text-align: center;
  writing-mode: vertical-rl;
}

.product-dialog {
  width: min(1180px, calc(100vw - 48px));
  max-height: calc(100vh - 48px);
  padding: 0;
  overflow: auto;
  border: 0;
  color: var(--black);
  background: var(--white);
}

.product-dialog::backdrop {
  background: rgb(22 22 22 / 82%);
}

.dialog-shell {
  position: relative;
  display: grid;
  grid-template-columns: minmax(330px, .75fr) minmax(0, 1.25fr);
  min-width: 0;
  min-height: 680px;
}

.dialog-close {
  position: absolute;
  z-index: 5;
  top: 0;
  right: 0;
  width: 52px;
  height: 52px;
  border: 0;
  color: var(--white);
  background: var(--black);
  cursor: pointer;
  font-size: 28px;
  font-weight: 300;
}

.dialog-close:hover {
  background: var(--blue);
}

.dialog-media {
  position: sticky;
  top: 0;
  display: grid;
  min-height: 680px;
  align-self: start;
  padding: 72px 32px 32px;
  background: var(--gray-10);
  border-right: 1px solid var(--gray-30);
  place-items: center;
  min-width: 0;
}

.dialog-category {
  position: absolute;
  top: 24px;
  left: 24px;
  color: var(--gray-70);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.dialog-media img {
  width: 100%;
  height: 480px;
  object-fit: contain;
}

.dialog-content {
  min-width: 0;
  padding: 72px 56px 48px;
}

.dialog-series {
  color: var(--blue);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.dialog-content > h2 {
  margin-top: 12px;
  padding-right: 24px;
  font-size: clamp(32px, 4vw, 52px);
  font-weight: 400;
  line-height: 1.08;
}

.dialog-summary {
  margin-top: 20px;
  color: var(--gray-70);
  font-size: 17px;
}

.dialog-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  margin-top: 32px;
  background: var(--gray-30);
  border: 1px solid var(--gray-30);
}

.dialog-feature {
  padding: 12px 14px;
  background: var(--gray-10);
  font-size: 13px;
}

.dialog-feature::before {
  margin-right: 8px;
  color: var(--blue);
  content: "+";
  font-weight: 700;
}

.dialog-feature:last-child:nth-child(odd) {
  grid-column: 1 / -1;
}

.specification-block {
  margin-top: 40px;
}

.specification-heading {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: baseline;
  margin-bottom: 12px;
}

.specification-heading h3 {
  font-size: 20px;
  font-weight: 500;
}

.specification-heading span {
  color: var(--gray-70);
  font-size: 11px;
}

.spec-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--gray-30);
}

.spec-table {
  width: 100%;
  min-width: 580px;
  border-collapse: collapse;
  font-size: 12px;
}

.spec-table th,
.spec-table td {
  padding: 12px 10px;
  border-right: 1px solid var(--gray-20);
  border-bottom: 1px solid var(--gray-20);
  text-align: left;
  vertical-align: top;
}

.spec-table th {
  color: var(--white);
  background: var(--black);
  font-weight: 600;
  white-space: nowrap;
}

.spec-table tr:nth-child(even) td {
  background: var(--gray-10);
}

.spec-table td:first-child {
  font-weight: 600;
}

.spec-placeholder {
  padding: 20px;
  color: var(--gray-70);
  background: var(--gray-10);
  font-size: 13px;
}

.dialog-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 32px;
}

@media (max-width: 1180px) {
  .hero-shell {
    grid-template-columns: minmax(0, .92fr) minmax(430px, 1.08fr);
    padding-inline: 32px;
    gap: 36px;
  }

  .hero-filter {
    right: 64px;
    width: 300px;
  }

  .hero-treatment {
    width: 200px;
  }

  .site-nav a {
    min-width: auto;
    padding: 0 15px;
  }

  .commitment-strip {
    grid-template-columns: 1fr;
    gap: 28px;
  }

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

  .product-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .partner-section,
  .inquiry-section {
    grid-template-columns: 1fr 1fr;
    gap: 48px;
  }

  .contact-hub {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 940px) {
  :root {
    --header-height: 64px;
  }

  .site-header {
    grid-template-columns: auto 1fr auto;
    padding-inline: 16px 0;
  }

  .brand {
    width: 124px;
    padding: 6px 16px;
  }

  .brand img {
    height: 50px;
  }

  .site-nav {
    position: absolute;
    top: var(--header-height);
    right: 0;
    left: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    color: var(--navy);
    background: var(--white);
    border-top: 1px solid var(--gray-20);
    box-shadow: var(--card-shadow);
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    min-height: 56px;
    justify-content: flex-start;
    place-items: center start;
    border-right: 0;
    border-bottom: 1px solid var(--gray-20);
  }

  .header-cta {
    justify-self: end;
    min-width: 160px;
  }

  .nav-toggle {
    display: grid;
  }

  .hero-shell {
    grid-template-columns: 1fr;
    padding: 72px 40px 64px;
  }

  .hero-copy {
    max-width: 760px;
  }

  .hero-showcase {
    width: min(100%, 720px);
    min-height: 560px;
    margin: 0 auto;
  }

  .section-heading,
  .service-section,
  .partner-section,
  .inquiry-section {
    grid-template-columns: 1fr;
  }

  .section-heading {
    gap: 24px;
  }

  .catalog-controls {
    grid-template-columns: 1fr;
    border-bottom: 0;
  }

  .category-filters {
    border-bottom: 1px solid var(--gray-30);
  }

  .catalog-search {
    width: min(100%, 420px);
  }

  .partner-copy {
    padding: 88px 40px;
  }

  .system-map {
    min-height: 680px;
    border-top: 1px solid var(--gray-80);
    border-left: 0;
  }

  .service-section {
    gap: 48px;
  }

  .inquiry-section {
    gap: 48px;
  }

  .dialog-shell {
    grid-template-columns: minmax(0, 1fr);
  }

  .dialog-media {
    position: relative;
    min-height: 420px;
    padding: 64px 32px 24px;
    border-right: 0;
    border-bottom: 1px solid var(--gray-30);
  }

  .dialog-media img {
    height: 320px;
  }

  .product-dialog[data-product-id="disinfection-monitor-250"] .dialog-media::before {
    top: 30%;
    width: 88%;
    height: 80px;
    font-size: 12px;
  }

  .dialog-content {
    padding: 48px 36px;
  }
}

@media (max-width: 680px) {
  .header-cta {
    display: none;
  }

  .site-header {
    grid-template-columns: auto 1fr auto;
  }

  .nav-toggle {
    grid-column: 3;
  }

  .hero-shell {
    padding: 56px 20px 44px;
    gap: 36px;
  }

  .hero h1 {
    font-size: clamp(38px, 11vw, 52px);
  }

  .hero-actions .button {
    width: 100%;
  }

  .hero-facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin-top: 32px;
    padding-top: 16px;
  }

  .hero-facts div,
  .hero-facts div + div {
    padding: 0 8px;
    border-right: 1px solid color-mix(in srgb, var(--navy) 13%, transparent);
    border-bottom: 0;
  }

  .hero-facts div:first-child {
    padding-left: 0;
  }

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

  .hero-facts dt {
    font-size: 10px;
  }

  .hero-facts dd {
    font-size: 12px;
    line-height: 1.35;
  }

  .hero-showcase {
    min-height: 430px;
    border-radius: 22px;
  }

  .hero-filter {
    top: 50px;
    right: 24px;
    width: 238px;
    height: 330px;
  }

  .hero-pump {
    right: -10px;
    bottom: 32px;
    width: 220px;
    height: 150px;
  }

  .hero-treatment {
    bottom: 22px;
    left: 4px;
    width: 150px;
    height: 120px;
  }

  .hero-catalog-badge {
    top: 18px;
    left: 18px;
  }

  .label-filter {
    top: 94px;
    right: 8px;
  }

  .label-pump,
  .label-treatment {
    display: none;
  }

  .commitment-strip,
  .service-section {
    padding: 72px 20px;
  }

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

  .commitment-grid article {
    min-height: 220px;
  }

  .catalog-section,
  .contact-hub,
  .inquiry-section {
    padding: 72px 20px;
  }

  .section-heading h2,
  .partner-copy h2,
  .service-title h2,
  .contact-heading h2,
  .inquiry-intro h2 {
    font-size: 38px;
  }

  .catalog-notice {
    grid-template-columns: auto 1fr;
  }

  .catalog-notice a {
    grid-column: 2;
  }

  .catalog-meta span {
    display: none;
  }

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

  .product-card {
    min-height: auto;
  }

  .partner-copy {
    padding: 72px 20px;
  }

  .system-map {
    min-height: 600px;
  }

  .system-map-center {
    width: 150px;
    height: 150px;
    padding: 18px;
  }

  .system-node {
    width: 150px;
    padding: 12px;
  }

  .node-a { top: 9%; left: 4%; }
  .node-b { top: 12%; right: 4%; }
  .node-c { right: 4%; bottom: 12%; }
  .node-d { bottom: 9%; left: 4%; }

  .service-steps article {
    grid-template-columns: 40px 1fr;
    gap: 12px;
  }

  .service-steps p {
    grid-column: 2;
  }

  .channel-grid,
  .form-row {
    grid-template-columns: 1fr;
  }

  .inquiry-form {
    padding: 24px 16px;
  }

  .form-row + .form-row,
  .field-message,
  .form-row .field + .field {
    margin-top: 20px;
  }

  .form-row {
    gap: 0;
  }

  .form-submit-row {
    align-items: stretch;
    flex-direction: column;
  }

  .form-submit-row p {
    text-align: left;
  }

  .site-footer {
    grid-template-columns: 1fr;
    gap: 40px;
    padding: 64px 20px 24px;
  }

  .footer-bottom {
    flex-direction: column;
  }

  .product-dialog {
    width: 100vw;
    max-width: 100vw;
    max-height: 100dvh;
    margin: 0;
  }

  .dialog-media {
    min-height: 340px;
  }

  .dialog-media img {
    height: 260px;
  }

  .dialog-content {
    padding: 40px 20px;
  }

  .dialog-features {
    grid-template-columns: 1fr;
  }

  .dialog-actions .button {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
  }
}