:root {
  --blue-950: #06264d;
  --blue-900: #0a315f;
  --blue-800: #10467f;
  --blue-700: #1257a6;
  --blue-600: #1769bf;
  --blue-100: #eaf3fd;
  --yellow: #f3c318;
  --yellow-dark: #d6a800;
  --orange: #ef8d22;
  --cyan-500: #12a9c8;
  --green-500: #0f9b63;
  --ink: #18293d;
  --text: #44566b;
  --muted: #6f8092;
  --line: #d7e1ec;
  --surface: #f5f8fc;
  --white: #ffffff;
  --shadow: 0 18px 50px rgba(14, 52, 93, 0.12);
  --container: 1240px;
  --header-height: 78px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background: var(--white);
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  line-height: 1.7;
}

body.modal-open,
body.menu-open {
  overflow: hidden;
}

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

button,
input,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

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

.container {
  width: min(calc(100% - 48px), var(--container));
  margin: 0 auto;
}

.site-header {
  position: fixed;
  z-index: 1000;
  top: 0;
  right: 0;
  left: 0;
  height: var(--header-height);
  border-bottom: 1px solid rgba(215, 225, 236, 0.85);
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 4px 20px rgba(6, 38, 77, 0.07);
  backdrop-filter: blur(12px);
}

.header-accent {
  height: 4px;
  background: linear-gradient(90deg, var(--blue-700), var(--blue-700) 76%, var(--yellow) 76%);
}

.header-inner {
  display: flex;
  height: calc(var(--header-height) - 4px);
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
  min-width: 180px;
}

.brand-logo {
  width: 180px;
  height: auto;
  max-height: 46px;
  object-fit: contain;
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: 30px;
  margin-left: auto;
}

.desktop-nav a {
  position: relative;
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
}

.desktop-nav a::after {
  position: absolute;
  right: 0;
  bottom: -8px;
  left: 0;
  height: 2px;
  background: var(--blue-700);
  content: "";
  opacity: 0;
  transform: scaleX(0.4);
  transition: 180ms ease;
}

.desktop-nav a:hover::after {
  opacity: 1;
  transform: scaleX(1);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 18px;
}

.phone-link {
  display: grid;
  line-height: 1.15;
}

.phone-link span {
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 1px;
}

.phone-link strong {
  margin-top: 5px;
  color: var(--blue-700);
  font-size: 16px;
}

.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--blue-700);
  border-radius: 4px;
  padding: 11px 24px;
  color: var(--white);
  background: var(--blue-700);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
  transition: 180ms ease;
}

.button:hover {
  border-color: var(--blue-800);
  background: var(--blue-800);
  transform: translateY(-2px);
}

.button-small {
  min-height: 38px;
  padding: 8px 18px;
  font-size: 13px;
}

.button-outline {
  color: var(--blue-700);
  background: transparent;
}

.button-outline:hover {
  color: var(--white);
  background: var(--blue-700);
}

.button-yellow {
  border-color: var(--yellow);
  color: var(--blue-950);
  background: var(--yellow);
}

.button-yellow:hover {
  border-color: var(--yellow-dark);
  color: var(--blue-950);
  background: var(--yellow-dark);
}

.button-disabled,
.button-disabled:hover {
  border-color: #b7c3d0;
  color: #77889a;
  background: #e7edf4;
  cursor: not-allowed;
  transform: none;
}

.menu-toggle,
.mobile-menu {
  display: none;
}

.hero {
  padding-top: var(--header-height);
  background: #eef5fc;
}

.hero picture {
  display: block;
}

.hero-banner-image {
  display: block;
  width: 100%;
  height: auto;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--blue-700);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 2px;
}

.anchor-nav {
  position: sticky;
  z-index: 900;
  top: var(--header-height);
  overflow-x: auto;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.97);
  box-shadow: 0 5px 18px rgba(14, 52, 93, 0.06);
  scrollbar-width: none;
}

.anchor-nav::-webkit-scrollbar {
  display: none;
}

.anchor-nav-inner {
  display: flex;
  min-width: max-content;
  justify-content: space-between;
}

.anchor-nav a {
  position: relative;
  padding: 17px 13px 16px;
  color: var(--text);
  font-size: 14px;
  font-weight: 700;
}

.anchor-nav a::after {
  position: absolute;
  right: 13px;
  bottom: 0;
  left: 13px;
  height: 3px;
  background: var(--blue-700);
  content: "";
  opacity: 0;
}

.anchor-nav a.active {
  color: var(--blue-700);
}

.anchor-nav a.active::after {
  opacity: 1;
}

.section {
  scroll-margin-top: 138px;
  padding: 100px 0;
}

.section-muted {
  background: var(--surface);
}

.section-heading {

  margin-bottom: 42px;
}

.section-heading h2 {
  margin: 0;
  color: var(--blue-950);
  font-size: clamp(31px, 3.1vw, 46px);
  line-height: 1.24;
  letter-spacing: -1px;
}

.section-heading p:last-child {
  margin: 16px 0 0;
  font-size: 16px;
}

.section-heading-row {
  display: flex;
  max-width: none;
  align-items: end;
  justify-content: space-between;
  gap: 50px;
}

.section-heading-row > p {
  max-width: 450px;
  margin: 0 0 4px;
}

.overview-grid {
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  gap: 28px;
}

.overview-panel {
  padding: 34px;
  border: 1px solid var(--line);
  border-top: 4px solid var(--blue-700);
  background: var(--white);
}

.panel-kicker,
.setting-tag {
  margin: 0 0 10px;
  color: var(--blue-700);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 1.7px;
}

.overview-panel h3,
.info-panel h3 {
  margin: 0;
  color: var(--blue-950);
  font-size: 28px;
  line-height: 1.35;
}

.overview-panel p:last-child {
  margin: 14px 0 0;
}

.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 30px;
}

.chip-list span,
.custom-tags span,
.application-more strong {
  border: 1px solid #c4d8ed;
  border-radius: 999px;
  padding: 6px 11px;
  color: var(--blue-700);
  background: #f4f9ff;
  font-size: 12px;
  font-weight: 700;
}

.placeholder-card,
.diagram-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.placeholder-card img,
.diagram-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.overview-points {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 28px;
  border: 1px solid var(--line);
  background: var(--white);
}

.overview-points article {
  min-height: 188px;
  border-right: 1px solid var(--line);
  padding: 25px 23px;
}

.overview-points article:last-child {
  border-right: 0;
}

.overview-points span,
.note-list span {
  color: var(--blue-700);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 1px;
}

.overview-points h3,
.benefit-card h3,
.application-card h3,
.note-list h3 {
  margin: 13px 0 7px;
  color: var(--blue-950);
  font-size: 19px;
  line-height: 1.35;
}

.overview-points p,
.benefit-card p,
.application-card p,
.note-list p {
  margin: 0;
  font-size: 14px;
}

.benefit-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.benefit-card {
  position: relative;
  min-height: 218px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 27px 26px;
  background: var(--white);
  transition: 180ms ease;
}

.benefit-card::before {
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 4px;
  background: var(--yellow);
  content: "";
  transition: 180ms ease;
}

.benefit-card:hover {
  border-color: #b8cde3;
  box-shadow: 0 14px 30px rgba(14, 52, 93, 0.09);
  transform: translateY(-4px);
}

.benefit-card:hover::before {
  width: 100%;
}

.feature-index {
  color: var(--blue-700);
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -1px;
}

.parameter-layout {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.table-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--white);
}

.table-card-wide {
  grid-column: 1 / -1;
}

.table-title {
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--line);
  padding: 18px 20px;
  background: #f8fbff;
}

.table-title span {
  color: var(--blue-700);
  font-size: 13px;
  font-weight: 800;
}

.table-title h3 {
  margin: 0;
  color: var(--blue-950);
  font-size: 19px;
}

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

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.table23 th{width:40%}
th,
td {
  border-bottom: 1px solid #e2e9f1;
  padding: 13px 16px;
  text-align: left;
  vertical-align: top;
}

tr:last-child th,
tr:last-child td {
  border-bottom: 0;
}
th {
  width: 22%;
  color: var(--blue-950);
  background: #f9fbfd;
  font-weight: 700;
}


td {
  color: var(--text);
}

.parameter-note {
  margin: 18px 0 0;
  border-left: 3px solid var(--yellow);
  padding: 7px 0 7px 14px;
  color: var(--muted);
  font-size: 13px;
}

.section-blue {
  position: relative;
  overflow: hidden;
  background: var(--blue-950);
}

.section-blue::before {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 42px 42px;
  content: "";
}

.section-blue .container {
  position: relative;
}

.section-heading-light h2,
.section-heading-light p:last-child {
  color: var(--white);
}

.electrical-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 24px;
}

.diagram-card {
  min-height: 390px;
}

.table-card-dark {
  border-color: rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.09);
}

.table-card-dark .table-title {
  border-bottom-color: rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.08);
}

.table-card-dark .table-title h3,
.table-card-dark table,
.table-card-dark th,
.table-card-dark td {
  color: var(--white);
}

.table-card-dark th,
.table-card-dark td {
  border-bottom-color: rgba(255, 255, 255, 0.14);
  background: transparent;
}

.wire,
.status-light {
  display: inline-block;
  width: 10px;
  height: 10px;
  margin-right: 8px;
  border-radius: 50%;
  vertical-align: 1px;
}

.wire-brown {
  background: #8a5a33;
}

.wire-blue {
  background: #3f86dd;
}

.wire-black {
  background: #111827;
}

.wire-white {
  border: 1px solid #9ba8b7;
  background: #ffffff;
}

.custom-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 20px;
}

.custom-tags span {
  border-color: rgba(255, 255, 255, 0.22);
  color: #dbeaff;
  background: rgba(255, 255, 255, 0.08);
}

.settings-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.setting-card {
  min-height: 218px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 26px;
  background: var(--white);
}

.setting-card-accent {
  border-color: #e0c65d;
  background: #fffdf1;
}

.setting-card h3 {
  margin: 0;
  color: var(--blue-950);
  font-size: 27px;
}

.setting-card strong {
  display: block;
  margin-top: 20px;
  color: var(--blue-700);
  font-size: 20px;
}

.setting-card p:last-child {
  margin: 9px 0 0;
}

.setting-card ol {
  margin: 15px 0 0;
  padding-left: 21px;
  font-size: 14px;
}

.settings-detail-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 18px;
  margin-top: 18px;
}

.info-panel {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 26px;
  background: var(--blue-100);
}

.mode-row {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.mode-row div {
  display: grid;
  border-left: 3px solid var(--blue-700);
  padding: 11px 14px;
  background: rgba(255, 255, 255, 0.62);
}

.mode-row strong {
  color: var(--blue-950);
}

.mode-row span {
  margin-top: 2px;
  color: var(--muted);
  font-size: 13px;
}

.status-green {
  background: #18a06b;
}

.status-orange {
  background: var(--orange);
}

.status-off {
  border: 1px solid #aab5c2;
  background: #e1e6eb;
}

.application-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.application-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--white);
  transition: 180ms ease;
}

.application-card:hover {
  box-shadow: 0 14px 30px rgba(14, 52, 93, 0.09);
  transform: translateY(-4px);
}

.application-card img {
  display: block;
  width: 100%;
  height: clamp(320px, 24vw, 350px);
  object-fit: contain;
  object-position: center;
  background: #eaf6ff;
}

.application-card div {
  min-height: 128px;
  padding: 17px 18px;
}

.application-card h3 {
  margin-top: 0;
}

.application-more {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px;
  margin-top: 24px;
}

.application-more > span {
  margin-right: 4px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.installation-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 24px;
}

.diagram-card-light {
  min-height: 430px;
}

.note-list {
  display: grid;
  gap: 12px;
}

.note-list article {
  display: flex;
  gap: 18px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 19px 20px;
  background: var(--white);
}

.note-list h3 {
  margin-top: 0;
}

.section-recommended {
  background: #eef5fc;
}

.section-heading-centered {
  text-align: center;
}

.recommended-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.recommended-card {
  display: block;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 10px 28px rgba(18, 35, 55, 0.06);
  transition: border-color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.recommended-card:hover {
  border-color: rgba(18, 87, 166, 0.34);
  box-shadow: 0 18px 38px rgba(18, 35, 55, 0.12);
  transform: translateY(-3px);
}

.recommended-card picture {
  display: block;
}

.recommended-card img {
  width: 100%;
  aspect-ratio: 1 / 1;
  border-bottom: 1px solid var(--line);
  object-fit: contain;
}

.recommended-card h3 {
  margin: 0;
  padding: 14px 16px 16px;
  color: var(--blue-950);
  font-size: 18px;
  line-height: 1.35;
}

.value-cta {
  padding: 64px 0;
  background: var(--blue-800);
}

.value-cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 35px;
}

.value-cta h2 {
  margin: 0;
  color: var(--white);
  font-size: clamp(28px, 3.1vw, 42px);
  line-height: 1.3;
}

.value-cta .eyebrow {
  color: #a8cffb;
}

.site-footer {
  color: #b9c7d8;
  background: #071d38;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.8fr repeat(3, 1fr);
  gap: 45px;
  padding: 56px 0 45px;
}

.brand-footer {
  width: fit-content;
  border-radius: 6px;
  padding: 8px 10px;
  background: var(--white);
}

.brand-footer .brand-logo {
  width: 190px;
}

.footer-grid h3 {
  margin: 0 0 14px;
  color: var(--white);
  font-size: 16px;
}

.footer-grid p,
.footer-grid a {
  display: block;
  margin: 6px 0;
  font-size: 13px;
}

.footer-grid a:hover {
  color: var(--white);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.11);
  padding: 13px 0;
  font-size: 12px;
}

.mobile-bottom-nav {
  display: none;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 1500;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.modal.is-open {
  display: flex;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(13, 31, 50, 0.64);
}

.modal-dialog {
  position: relative;
  z-index: 1;
  width: min(100%, 520px);
  max-height: calc(100svh - 48px);
  overflow-y: auto;
  background: var(--white);
  border-radius: 8px;
  box-shadow: 0 22px 80px rgba(0, 0, 0, 0.26);
}

.modal-close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 36px;
  height: 36px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--white);
  color: var(--ink);
  font-size: 24px;
  line-height: 1;
}

.sample-form {
  display: grid;
  gap: 16px;
  padding: 32px;
}

.sample-form h2 {
  margin: 0 42px 4px 0;
  color: var(--blue-900);
}

.sample-form label {
  display: grid;
  gap: 7px;
  margin: 0;
  color: #314459;
  font-weight: 700;
}

.sample-form label span {
  color: inherit;
  font-size: inherit;
  font-weight: inherit;
}

.sample-form input,
.sample-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 11px 12px;
  color: var(--ink);
  background: #fbfdff;
}

.sample-form input:focus,
.sample-form textarea:focus {
  outline: 2px solid rgba(18, 169, 200, 0.28);
  border-color: var(--cyan-500);
}

textarea {
  resize: vertical;
}

.form-message {
  min-height: 24px;
  margin: 0;
  color: var(--green-500);
  font-weight: 700;
}

.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

.sample-form .button {
  min-height: 44px;
  border: 1px solid #0b64d8;
  padding: 0 22px;
  background: linear-gradient(180deg, #1479e8, #075ec8);
  box-shadow: 0 10px 22px rgba(7, 94, 200, 0.22);
  transition: transform 0.18s ease, background 0.18s ease, border-color 0.18s ease;
}

.sample-form .button:hover {
  border-color: #073f8e;
  background: linear-gradient(180deg, #0d67ce, #073f8e);
  transform: translateY(-1px);
}

.sample-form .button-secondary {
  color: var(--blue-700);
  background: var(--white);
  box-shadow: none;
}

.sample-form .button-secondary:hover {
  color: var(--white);
}

@media (max-width: 1100px) {
  .desktop-nav {
    gap: 20px;
  }

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

  .overview-grid,
  .electrical-grid,
  .installation-grid {
    grid-template-columns: 1fr;
  }

  .diagram-card,
  .diagram-card-light {
    min-height: auto;
  }

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

@media (max-width: 860px) {
  :root {
    --header-height: 68px;
  }

  .container {
    width: min(calc(100% - 32px), var(--container));
  }

  .desktop-nav,
  .phone-link,
  .header-actions .button-small {
    display: none;
  }

  .menu-toggle {
    display: grid;
    width: 40px;
    height: 40px;
    place-content: center;
    gap: 5px;
    border: 1px solid var(--line);
    border-radius: 4px;
    background: var(--white);
  }

  .menu-toggle span {
    display: block;
    width: 19px;
    height: 2px;
    background: var(--blue-950);
    transition: 180ms ease;
  }

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

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

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

  .mobile-menu {
    position: fixed;
    top: var(--header-height);
    right: 0;
    left: 0;
    display: grid;
    visibility: hidden;
    border-bottom: 1px solid var(--line);
    padding: 10px 16px 17px;
    background: rgba(255, 255, 255, 0.99);
    box-shadow: 0 18px 30px rgba(6, 38, 77, 0.13);
    opacity: 0;
    transform: translateY(-12px);
    transition: 180ms ease;
  }

  .mobile-menu.is-open {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
  }

  .mobile-menu a {
    border-bottom: 1px solid #edf1f5;
    padding: 11px 7px;
    color: var(--blue-950);
    font-size: 14px;
    font-weight: 700;
  }

  .hero {
    padding-top: var(--header-height);
  }

  .hero-banner-image {
    height: 240px;
    object-fit: cover;
    object-position: 28% center;
  }

  .anchor-nav a {
    padding-right: 16px;
    padding-left: 16px;
  }

  .section {
    scroll-margin-top: 125px;
    padding: 76px 0;
  }

  .section-heading-row,
  .value-cta-inner {
    display: block;
  }

  .section-heading-row > p {
    margin-top: 14px;
  }

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

  .settings-detail-grid {
    grid-template-columns: 1fr;
  }

  .value-cta .button {
    margin-top: 22px;
  }

  .mobile-bottom-nav {
    position: fixed;
    z-index: 950;
    right: 0;
    bottom: 0;
    left: 0;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    border-top: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.97);
    box-shadow: 0 -4px 18px rgba(6, 38, 77, 0.1);
  }

  .mobile-bottom-nav a,
  .mobile-bottom-nav button {
    display: grid;
    min-height: 52px;
    place-content: center;
    border: 0;
    border-right: 1px solid var(--line);
    color: var(--blue-950);
    background: transparent;
    font-size: 12px;
    font-weight: 700;
  }

  .mobile-bottom-nav button {
    border-right: 0;
    color: var(--white);
    background: var(--blue-700);
  }

  .site-footer {
    padding-bottom: 52px;
  }
}

@media (max-width: 620px) {
  .container {
    width: min(calc(100% - 24px), var(--container));
  }

  .brand-logo {
    width: 132px;
    max-height: 40px;
  }

  .brand {
    min-width: 0;
  }

  .hero-banner-image {
    height: 210px;
  }

  .section {
    padding: 62px 0;
  }

  .section-heading {
    margin-bottom: 28px;
  }

  .section-heading h2 {
    font-size: 30px;
  }

  .section-heading p:last-child {
    font-size: 14px;
  }

  .overview-grid,
  .parameter-layout {
    gap: 14px;
  }

  .overview-panel {
    padding: 22px;
  }

  .overview-panel h3,
  .info-panel h3 {
    font-size: 23px;
  }

  .overview-points,
  .benefit-grid,
  .application-grid,
  .settings-grid {
    grid-template-columns: 1fr;
  }

  .overview-points article {
    min-height: 0;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    padding: 20px;
  }

  .overview-points article:last-child {
    border-bottom: 0;
  }

  .benefit-card,
  .setting-card {
    min-height: 0;
    padding: 21px;
  }

  .electrical-grid {
    gap: 14px;
  }

  th,
  td {
    min-width: 128px;
    padding: 11px 12px;
  }

  .table-title {
    padding: 14px;
  }

  .table-title h3 {
    font-size: 17px;
  }

  .settings-detail-grid {
    gap: 14px;
  }

  .info-panel {
    padding: 21px;
  }

  .installation-grid {
    gap: 14px;
  }

  .note-list article {
    gap: 14px;
    padding: 16px;
  }

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

  .value-cta {
    padding: 48px 0;
  }

  .value-cta h2 {
    font-size: 27px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
    padding-top: 44px;
  }

  .modal {
    padding: 12px;
  }

  .modal-dialog {
    max-height: calc(100svh - 24px);
  }

  .form-actions {
    flex-direction: column-reverse;
  }

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

  .sample-form {
    padding: 26px 20px;
  }
}
/*sidebar*/
.fkf{list-style-type: none;}
		.wpsidebar-fkf {
		  position: fixed;
		  right: 10px;
		  top: 30%;
		  z-index: 9999;
		}
		
		.fkf-item {
		  position: relative;
		  height: auto;
		  border: 1px solid #ccc;
		  background-color: #fff;
		  margin-bottom: 2px;
		  box-sizing: border-box;
		  cursor: pointer;
		}
		
		.fkf-item img.hover {
		  display: none;
		}
		
		.fkf-item:hover > img {
		  display: none;
		}
		
		.fkf-item:hover img.hover {
		  display: block;
		}
		
		.fkf-items {
		  position: relative;
		  width: 68px;
		  height: 50px;
		  margin-bottom: 1px;
		  cursor: pointer;
		  transition: all 0.3s;
		}
		
		.fkf-items img {
		  position: absolute;
		  top: 0;
		  left: 0;
		  width: 100%;
		  height: 100%;
		  transition: opacity 0.3s;
		}
		
		.fkf-items img.hover {
		  opacity: 0;
		}
		
		.fkf-items:hover img.normal {
		  opacity: 0;
		}
		
		.fkf-items:hover img.hover {
		  opacity: 1;
		}
		
		.tooltip {
		  position: absolute;
		  left: -150px;
		  top: 50%;
		  transform: translateY(-50%);
		  background-color: #fff;
		  padding: 8px 12px;
		  border-radius: 4px;
		  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
		  white-space: nowrap;
		  opacity: 0;
		  visibility: hidden;
		  transition: all 0.3s;
		  z-index: 1;
		}
		
		.fkf-items:hover .tooltip {
		  opacity: 1;
		  visibility: visible;
		  left: -150px;
		  font-size:12px;
		}
		
		.tooltip::after {
		  content: "";
		  position: absolute;
		  right: -6px;
		  top: 50%;
		  transform: translateY(-50%);
		  border-top: 6px solid transparent;
		  border-bottom: 6px solid transparent;
		  border-left: 6px solid #fff;
		}
		
		.tooltip-img {
		  width: 220px;
		  height: 220px;
		}
		
		.fkf-items:hover .tooltip-img {
		  left: -230px !important;
		  top: 25px;
		}
		
		.fkf-items:hover .tooltip-em {
		  left: -150px !important;
		}
		
		.tooltip-img:hover {
		  display: none;
		}
		
		.modal {
		  display: none;
		  position: fixed;
		  inset: 0;
		  width: 100%;
		  height: 100%;
		  background-color: rgba(0, 0, 0, 0.5);
		  z-index: 10000;
		  justify-content: center;
		  align-items: center;
		}
		
		.modal-content {
		  background-color: #fff;
		  padding: 20px;
		  border-radius: 8px;
		  width: 500px;
		  max-width: 90%;
		}
		
		.form-group {
		  margin-bottom: 15px;
		}
		
		.form-group label {
		  display: block;
		  margin-bottom: 5px;
		  font-weight: bold;
		}
		
		.form-group input,
		.form-group textarea {
		  width: 100%;
		  padding: 8px;
		  border: 1px solid #ddd;
		  border-radius: 4px;
		}
		
		.form-actions {
		  text-align: right;
		  margin-top: 20px;
		}
		
		.btn {
		  padding: 8px 16px;
		  border: none;
		  border-radius: 4px;
		  cursor: pointer;
		}
		
		.btn-primary {
		  background-color: #1890ff;
		  color: #fff;
		}
		
		.btn-default {
		  background-color: #ddd;
		  margin-right: 10px;
		}
		
		.close {
		  float: right;
		  font-size: 24px;
		  font-weight: bold;
		  cursor: pointer;
		}
		
		@media (max-width: 767px) {
		 .wpsidebar-fkf {    
		  display: block;
		  right: 8px;
		  top: auto;
		  bottom: 40px;
		  }
		  .fkf-items:hover .tooltip-img {display:none;}
		  .fkf-items {
		  width: 48px;
		  height: 44px;
		  }
		}.site-footer {
  display: grid;
  grid-template-columns: 1.2fr .8fr 1fr;
  gap: 24px;
  padding: 34px clamp(16px, 6vw, 84px);
  color: rgba(255,255,255,.82);
  background: #0a1933;
}

.site-footer strong,
.site-footer a {
  color: #fff;
}

.site-footer p {
  margin: 4px 0 0;
}

.site-footer span {
  display: block;
  color: rgba(255,255,255,.58);
  font-size: 13px;
}