:root {
  --ink: #122023;
  --ink-soft: #526164;
  --paper: #f4f6f3;
  --white: #ffffff;
  --teal: #1d5960;
  --teal-deep: #102f36;
  --mint: #b9d8ce;
  --orange: #f26a2e;
  --orange-dark: #d95018;
  --line: #ccd4d1;
  --section-space: clamp(5rem, 8vw, 8.5rem);
  --container: 1180px;
  --header-height: 76px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 20px);
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  letter-spacing: 0;
}

body.menu-open {
  overflow: hidden;
}

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

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

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

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

button {
  color: inherit;
}

:focus-visible {
  outline: 3px solid #f7a074;
  outline-offset: 3px;
}

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

.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: 100;
  top: 12px;
  left: 12px;
  padding: 10px 16px;
  background: var(--white);
  transform: translateY(-150%);
}

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

.site-header {
  position: fixed;
  z-index: 50;
  top: 0;
  right: 0;
  left: 0;
  color: var(--white);
  border-bottom: 1px solid rgba(255, 255, 255, 0.22);
  transition: background-color 180ms ease, color 180ms ease, box-shadow 180ms ease;
}

.site-header.scrolled {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 8px 28px rgba(18, 32, 35, 0.08);
}

.nav-shell {
  width: min(calc(100% - 48px), 1320px);
  min-height: var(--header-height);
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
}

.brand-logo {
  width: 44px;
  height: 44px;
  object-fit: contain;
  background: var(--white);
  border-radius: 4px;
}

.brand-name {
  display: flex;
  flex-direction: column;
  font-size: 20px;
  font-weight: 700;
  line-height: 1.1;
}

.brand-name small {
  margin-top: 5px;
  font-family: Arial, sans-serif;
  font-size: 8px;
  font-weight: 600;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(20px, 2.4vw, 38px);
  font-size: 14px;
  font-weight: 600;
}

.site-nav > a:not(.nav-action) {
  position: relative;
  padding-block: 26px;
}

.site-nav > a:not(.nav-action)::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 18px;
  left: 0;
  height: 2px;
  background: var(--orange);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 160ms ease;
}

.site-nav > a:hover::after,
.site-nav > a:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav-action {
  padding: 11px 18px;
  color: var(--ink);
  background: var(--white);
}

.scrolled .nav-action {
  color: var(--white);
  background: var(--teal-deep);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  align-items: center;
  justify-content: center;
  border: 1px solid currentColor;
  background: transparent;
}

.menu-icon,
.menu-icon::before,
.menu-icon::after {
  width: 20px;
  height: 2px;
  display: block;
  background: currentColor;
  transition: transform 160ms ease, opacity 160ms ease;
}

.menu-icon {
  position: relative;
}

.menu-icon::before,
.menu-icon::after {
  content: "";
  position: absolute;
  left: 0;
}

.menu-icon::before { top: -6px; }
.menu-icon::after { top: 6px; }

.menu-toggle[aria-expanded="true"] .menu-icon {
  background: transparent;
}

.menu-toggle[aria-expanded="true"] .menu-icon::before {
  top: 0;
  transform: rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .menu-icon::after {
  top: 0;
  transform: rotate(-45deg);
}

.hero {
  position: relative;
  min-height: min(820px, 86svh);
  color: var(--white);
  overflow: hidden;
  background: #15343a;
}

.hero-media,
.hero-shade,
.hero-grid {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-media {
  object-fit: cover;
  object-position: center;
  filter: saturate(0.65) contrast(1.03);
}

.hero-shade {
  background:
    linear-gradient(90deg, rgba(7, 28, 32, 0.96) 0%, rgba(10, 38, 43, 0.78) 45%, rgba(10, 31, 35, 0.26) 74%, rgba(7, 23, 27, 0.5) 100%),
    linear-gradient(0deg, rgba(8, 25, 29, 0.72) 0%, transparent 36%);
}

.hero-grid {
  opacity: 0.14;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.2) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.2) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to right, black, transparent 72%);
}

.hero-content {
  position: relative;
  z-index: 2;
  min-height: min(820px, 86svh);
  padding-top: calc(var(--header-height) + 72px);
  padding-bottom: 190px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--teal);
  font-family: Arial, sans-serif;
  font-size: 12px;
  font-weight: 700;
}

.eyebrow.light {
  color: var(--mint);
}

.hero h1 {
  max-width: 760px;
  margin: 0;
  font-family: "Microsoft YaHei", sans-serif;
  font-size: clamp(64px, 8.4vw, 126px);
  line-height: 0.96;
  font-weight: 800;
}

.hero-lead {
  margin: 28px 0 8px;
  font-size: clamp(24px, 3vw, 38px);
  line-height: 1.35;
  font-weight: 600;
}

.hero-copy {
  max-width: 610px;
  margin: 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: 17px;
}

.hero-actions {
  margin-top: 36px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  min-height: 50px;
  padding: 13px 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  border: 1px solid transparent;
  border-radius: 4px;
  font-weight: 700;
  line-height: 1.2;
  cursor: pointer;
  transition: transform 160ms ease, background-color 160ms ease, border-color 160ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  color: var(--white);
  background: var(--orange);
}

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

.button-ghost {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.55);
  background: rgba(255, 255, 255, 0.06);
}

.button-ghost:hover {
  background: rgba(255, 255, 255, 0.13);
}

.button-accent {
  color: var(--white);
  background: var(--orange);
}

.hero-index {
  position: absolute;
  z-index: 2;
  right: 0;
  bottom: 0;
  left: max(24px, calc((100vw - var(--container)) / 2));
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid rgba(255, 255, 255, 0.24);
  background: rgba(8, 34, 39, 0.78);
  backdrop-filter: blur(12px);
}

.hero-index > div {
  min-height: 112px;
  padding: 25px 30px;
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto auto;
  column-gap: 16px;
  border-right: 1px solid rgba(255, 255, 255, 0.18);
}

.hero-index span {
  grid-row: 1 / 3;
  color: var(--orange);
  font-family: Arial, sans-serif;
  font-size: 12px;
  font-weight: 700;
}

.hero-index strong {
  font-size: 16px;
}

.hero-index small {
  color: rgba(255, 255, 255, 0.62);
}

.intro-strip {
  background: var(--white);
  border-bottom: 1px solid var(--line);
}

.intro-grid {
  min-height: 166px;
  display: grid;
  grid-template-columns: 1.35fr repeat(3, 1fr);
  align-items: center;
}

.intro-grid > * {
  min-height: 86px;
  padding: 10px 28px;
  display: flex;
  align-items: center;
  border-left: 1px solid var(--line);
}

.intro-grid > *:first-child {
  padding-left: 0;
  border-left: 0;
}

.intro-statement {
  margin: 0;
  display: block;
  font-size: 20px;
  line-height: 1.6;
}

.intro-statement strong {
  display: block;
  font-size: 23px;
}

.intro-point {
  gap: 14px;
}

.intro-point > span {
  color: var(--orange);
  font-family: Arial, sans-serif;
  font-size: 12px;
  font-weight: 800;
  writing-mode: vertical-rl;
}

.intro-point p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.6;
}

.intro-point strong {
  display: block;
  color: var(--ink);
  font-size: 16px;
}

.section {
  padding-block: var(--section-space);
}

.section-heading {
  margin-bottom: 54px;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
  align-items: end;
  gap: 70px;
}

.section-heading h2,
.principle-copy h2,
.capability-intro h2,
.selection-intro h2,
.about-heading h2,
.contact-layout h2 {
  margin: 0;
  font-size: clamp(34px, 4.2vw, 58px);
  line-height: 1.2;
  font-weight: 700;
}

.section-heading > p {
  margin: 0 0 4px;
  color: var(--ink-soft);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.product-card {
  min-height: 550px;
  padding: 30px;
  display: flex;
  flex-direction: column;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 6px;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.product-card:hover {
  transform: translateY(-5px);
  border-color: #9baaa7;
  box-shadow: 0 20px 50px rgba(25, 48, 51, 0.09);
}

.product-card.featured {
  color: var(--white);
  background: var(--teal-deep);
  border-color: var(--teal-deep);
}

.product-card.featured p,
.product-card.featured details p {
  color: rgba(255, 255, 255, 0.68);
}

.product-card.featured .tag-list li {
  color: var(--mint);
  border-color: rgba(185, 216, 206, 0.34);
}

.product-visual {
  position: relative;
  height: 190px;
  margin: -4px 0 24px;
  overflow: hidden;
  background: #edf1ef;
  border: 1px solid #d6ddda;
}

.product-photo {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
}

.product-number {
  margin-bottom: 12px;
  color: var(--orange);
  font-family: Arial, sans-serif;
  font-size: 11px;
  font-weight: 800;
}

.product-card h3 {
  margin: 0;
  font-size: 23px;
  line-height: 1.35;
}

.product-card > p {
  margin: 14px 0 18px;
  color: var(--ink-soft);
  font-size: 14px;
}

.tag-list {
  margin: 0 0 24px;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
}

.tag-list li {
  padding: 5px 9px;
  color: var(--teal);
  border: 1px solid #b9c8c5;
  font-size: 12px;
}

.product-card details {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid currentColor;
  border-color: rgba(82, 97, 100, 0.25);
}

.product-card summary {
  position: relative;
  padding-right: 22px;
  font-weight: 700;
  cursor: pointer;
  list-style: none;
}

.product-card summary::-webkit-details-marker {
  display: none;
}

.product-card summary::after {
  content: "+";
  position: absolute;
  right: 2px;
  font-family: Arial, sans-serif;
  font-size: 20px;
  font-weight: 400;
}

.product-card details[open] summary::after {
  content: "−";
}

.product-card details p {
  margin: 12px 0 0;
  color: var(--ink-soft);
  font-size: 13px;
}

.principle-band {
  padding-block: var(--section-space);
  color: var(--white);
  background: var(--teal-deep);
}

.principle-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(420px, 1.08fr);
  align-items: center;
  gap: clamp(60px, 8vw, 110px);
}

.principle-copy > p:not(.eyebrow) {
  max-width: 610px;
  margin: 24px 0 0;
  color: rgba(255, 255, 255, 0.7);
}

.principle-steps {
  margin: 42px 0 0;
  padding: 0;
  list-style: none;
}

.principle-steps li {
  padding: 18px 0;
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
}

.principle-steps span {
  color: var(--orange);
  font-family: Arial, sans-serif;
  font-size: 12px;
  font-weight: 700;
}

.principle-steps strong {
  font-size: 17px;
}

.principle-steps p {
  margin: 2px 0 0;
  color: rgba(255, 255, 255, 0.6);
  font-size: 13px;
}

.principle-figure {
  margin: 0;
}

.principle-image-wrap {
  position: relative;
  min-height: 430px;
  display: grid;
  place-items: center;
  background: #e8efec;
  border: 1px solid rgba(255, 255, 255, 0.22);
  overflow: hidden;
}

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

.principle-image-wrap::before {
  inset: 24px;
  border: 1px solid rgba(16, 47, 54, 0.18);
}

.principle-image-wrap::after {
  right: 0;
  bottom: 0;
  width: 96px;
  height: 8px;
  background: var(--orange);
}

.principle-image-wrap img {
  width: min(78%, 520px);
}

.principle-figure figcaption {
  margin-top: 12px;
  color: rgba(255, 255, 255, 0.5);
  font-size: 12px;
}

.applications {
  background: var(--white);
}

.application-layout {
  display: grid;
  grid-template-columns: minmax(300px, 0.85fr) minmax(0, 1.15fr);
  border-block: 1px solid var(--line);
}

.application-tabs {
  border-right: 1px solid var(--line);
}

.application-tabs button {
  width: 100%;
  min-height: 102px;
  padding: 20px 28px;
  display: grid;
  grid-template-columns: 40px 1fr;
  grid-template-rows: auto auto;
  column-gap: 14px;
  color: var(--ink);
  border: 0;
  border-bottom: 1px solid var(--line);
  background: transparent;
  text-align: left;
  cursor: pointer;
}

.application-tabs button:last-child {
  border-bottom: 0;
}

.application-tabs button[aria-selected="true"] {
  color: var(--white);
  background: var(--teal);
}

.application-tabs button > span {
  grid-row: 1 / 3;
  color: var(--orange);
  font-family: Arial, sans-serif;
  font-size: 11px;
  font-weight: 800;
}

.application-tabs strong {
  font-size: 17px;
}

.application-tabs small {
  opacity: 0.62;
}

.application-panel {
  min-height: 410px;
  padding: clamp(42px, 6vw, 78px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  background:
    linear-gradient(rgba(255, 255, 255, 0.94), rgba(255, 255, 255, 0.94)),
    repeating-linear-gradient(0deg, transparent 0 39px, rgba(29, 89, 96, 0.1) 39px 40px);
}

.panel-kicker {
  margin: 0 0 14px;
  color: var(--orange);
  font-family: Arial, sans-serif;
  font-size: 11px;
  font-weight: 800;
}

.application-panel h3 {
  margin: 0;
  font-size: clamp(28px, 3.2vw, 42px);
}

.application-panel > p:not(.panel-kicker) {
  max-width: 620px;
  margin: 18px 0 34px;
  color: var(--ink-soft);
}

.panel-meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.panel-meta > div {
  padding: 18px 0;
  border-top: 2px solid var(--teal);
}

.panel-meta span,
.panel-meta strong {
  display: block;
}

.panel-meta span {
  color: var(--ink-soft);
  font-size: 12px;
}

.panel-meta strong {
  margin-top: 5px;
  font-size: 14px;
}

.capabilities {
  background: #e7ece8;
}

.capability-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
  gap: clamp(70px, 9vw, 140px);
}

.capability-intro {
  position: sticky;
  top: 120px;
  align-self: start;
}

.capability-intro > p:not(.eyebrow) {
  margin: 24px 0;
  color: var(--ink-soft);
}

.text-link {
  display: inline-flex;
  gap: 18px;
  align-items: center;
  color: var(--teal);
  border-bottom: 1px solid currentColor;
  font-weight: 700;
}

.capability-list {
  border-top: 1px solid #9daba7;
}

.capability-item {
  padding: 34px 0;
  display: grid;
  grid-template-columns: 66px 1fr;
  gap: 22px;
  border-bottom: 1px solid #9daba7;
}

.capability-no {
  color: var(--orange);
  font-family: Arial, sans-serif;
  font-size: 13px;
  font-weight: 800;
}

.capability-item h3 {
  margin: 0 0 8px;
  font-size: 24px;
}

.capability-item p {
  margin: 0;
  color: var(--ink-soft);
}

.selection {
  padding-block: var(--section-space);
  color: var(--white);
  background: #183d42;
}

.selection-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.66fr) minmax(0, 1.34fr);
  gap: clamp(60px, 9vw, 130px);
}

.selection-intro > p:not(.eyebrow) {
  color: rgba(255, 255, 255, 0.7);
}

.selection-note {
  margin-top: 54px;
  padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.22);
}

.selection-note strong {
  color: var(--mint);
}

.selection-note p {
  margin: 5px 0 0;
  color: rgba(255, 255, 255, 0.58);
  font-size: 13px;
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.selection-form label {
  display: block;
}

.selection-form label > span {
  display: block;
  margin-bottom: 7px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 13px;
}

.selection-form input,
.selection-form select,
.selection-form textarea {
  width: 100%;
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.06);
}

.selection-form input,
.selection-form select {
  height: 52px;
  padding: 0 14px;
}

.selection-form textarea {
  min-height: 118px;
  padding: 13px 14px;
  resize: vertical;
}

.selection-form select option {
  color: var(--ink);
}

.selection-form input::placeholder,
.selection-form textarea::placeholder {
  color: rgba(255, 255, 255, 0.36);
}

.selection-form input:focus,
.selection-form select:focus,
.selection-form textarea:focus {
  border-color: var(--mint);
  outline: none;
  box-shadow: 0 0 0 3px rgba(185, 216, 206, 0.14);
}

.selection-form .invalid {
  border-color: #ff956b;
}

.field-wide {
  margin-top: 18px;
}

.form-submit {
  width: 100%;
  margin-top: 22px;
  border: 0;
}

.form-status {
  min-height: 27px;
  margin: 8px 0 0;
  color: #ffb899;
  font-size: 13px;
}

.request-result {
  margin-top: 22px;
  padding: 20px;
  color: var(--ink);
  background: var(--white);
  border-radius: 4px;
}

.request-result-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.request-result-head > div {
  display: flex;
  gap: 8px;
}

.request-result-head button {
  padding: 7px 10px;
  color: var(--teal);
  border: 1px solid #a7bab6;
  background: transparent;
  border-radius: 3px;
  cursor: pointer;
}

.request-result pre {
  margin: 18px 0 0;
  padding: 16px;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  color: #274348;
  background: #eef2ef;
  font: 13px/1.8 Consolas, "Microsoft YaHei", monospace;
}

.about {
  background: var(--paper);
}

.about-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(70px, 10vw, 150px);
}

.about-copy {
  padding-top: 38px;
  border-top: 3px solid var(--orange);
}

.about-lead {
  margin: 0 0 24px;
  color: var(--teal-deep);
  font-size: 24px;
  line-height: 1.55;
  font-weight: 700;
}

.about-copy > p:not(.about-lead) {
  color: var(--ink-soft);
}

.about-values {
  margin-top: 36px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.about-values span {
  padding: 8px 12px;
  color: var(--teal);
  border: 1px solid #aebebb;
  font-size: 13px;
}

.about-gallery {
  grid-column: 1 / -1;
  margin-top: 16px;
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 14px;
}

.about-image {
  position: relative;
  min-height: 330px;
  margin: 0;
  overflow: hidden;
  background: #d9dfdc;
}

.about-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about-image-wide img {
  object-position: center 70%;
}

.about-image figcaption {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  padding: 13px 16px;
  color: var(--white);
  background: rgba(10, 37, 42, 0.82);
  font-size: 13px;
}

.contact-band {
  padding-block: clamp(70px, 9vw, 110px);
  color: var(--white);
  background: #0f282d;
}

.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(300px, 0.85fr);
  align-items: end;
  gap: 80px;
}

.contact-action p {
  margin: 0 0 26px;
  color: rgba(255, 255, 255, 0.66);
}

.contact-action {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 112px;
  align-items: end;
  gap: 18px 24px;
}

.contact-action > p {
  grid-column: 1;
  margin: 0;
}

.contact-options {
  grid-column: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.contact-qr {
  grid-column: 2;
  grid-row: 1 / 3;
  width: 112px;
  height: 116px;
  object-fit: cover;
  border: 6px solid var(--white);
}

.site-footer {
  padding: 48px 0 22px;
  color: var(--ink-soft);
  background: var(--white);
}

.footer-main {
  padding-bottom: 38px;
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 40px;
}

.footer-main p {
  margin: 0;
}

.footer-main > a:not(.brand) {
  color: var(--teal);
  border-bottom: 1px solid currentColor;
}

.footer-bottom {
  padding-top: 18px;
  display: flex;
  justify-content: space-between;
  gap: 24px;
  border-top: 1px solid var(--line);
  font-size: 12px;
}

.footer-bottom p {
  margin: 0;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 600ms ease, transform 600ms ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 980px) {
  :root {
    --header-height: 68px;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: fixed;
    top: var(--header-height);
    right: 0;
    bottom: 0;
    left: 0;
    padding: 30px 24px;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    color: var(--ink);
    background: var(--white);
    transform: translateX(100%);
    transition: transform 220ms ease;
  }

  .site-nav.open {
    transform: translateX(0);
  }

  .site-nav > a:not(.nav-action) {
    padding: 18px 4px;
    border-bottom: 1px solid var(--line);
    font-size: 17px;
  }

  .site-nav > a:not(.nav-action)::after {
    display: none;
  }

  .nav-action,
  .scrolled .nav-action {
    margin-top: 24px;
    color: var(--white);
    background: var(--teal-deep);
    text-align: center;
  }

  .hero {
    min-height: 820px;
  }

  .hero-content {
    min-height: 650px;
    padding-bottom: 80px;
  }

  .hero-index {
    left: 0;
  }

  .intro-grid {
    grid-template-columns: repeat(3, 1fr);
    padding-block: 28px;
  }

  .intro-statement {
    grid-column: 1 / -1;
    min-height: auto;
    padding: 0 0 26px;
    border-left: 0;
  }

  .intro-grid > *:nth-child(2) {
    padding-left: 0;
    border-left: 0;
  }

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

  .product-card {
    min-height: 0;
    display: grid;
    grid-template-columns: 230px 1fr;
    column-gap: 30px;
  }

  .product-visual {
    grid-row: 1 / 7;
    height: 240px;
    align-self: center;
  }

  .product-card details {
    margin-top: 0;
  }

  .principle-layout,
  .capability-layout,
  .selection-layout {
    grid-template-columns: 1fr;
  }

  .capability-intro {
    position: static;
  }

  .application-layout {
    grid-template-columns: 1fr;
  }

  .application-tabs {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .application-tabs button {
    border-right: 1px solid var(--line);
  }

  .selection-layout {
    gap: 54px;
  }
}

@media (max-width: 720px) {
  .container,
  .nav-shell {
    width: min(calc(100% - 32px), var(--container));
  }

  .brand-name {
    font-size: 18px;
  }

  .brand-name small {
    font-size: 7px;
  }

  .brand-logo {
    width: 38px;
    height: 38px;
  }

  .hero {
    min-height: 780px;
  }

  .hero-media {
    object-position: 58% center;
  }

  .hero-content {
    min-height: 600px;
    padding-top: 110px;
    padding-bottom: 60px;
    justify-content: center;
  }

  .hero h1 {
    font-size: clamp(52px, 18vw, 74px);
  }

  .hero-lead {
    font-size: 24px;
  }

  .hero-copy {
    font-size: 15px;
  }

  .hero-actions {
    width: 100%;
  }

  .hero-actions .button {
    flex: 1 1 150px;
  }

  .hero-index {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .hero-index > div {
    min-height: 180px;
    padding: 18px 10px;
    display: flex;
    flex-direction: column;
    gap: 6px;
  }

  .hero-index span {
    font-size: 10px;
  }

  .hero-index strong {
    font-size: 14px;
  }

  .hero-index small {
    font-size: 11px;
    line-height: 1.5;
  }

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

  .intro-grid > *,
  .intro-grid > *:nth-child(2) {
    min-height: auto;
    padding: 18px 0;
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .intro-statement,
  .intro-grid > *:nth-child(2) {
    border-top: 0;
  }

  .section-heading,
  .about-layout,
  .contact-layout {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .section-heading {
    margin-bottom: 36px;
  }

  .section-heading h2,
  .principle-copy h2,
  .capability-intro h2,
  .selection-intro h2,
  .about-heading h2,
  .contact-layout h2 {
    font-size: 34px;
  }

  .product-card {
    padding: 24px;
    display: flex;
  }

  .product-visual {
    width: 100%;
    height: 190px;
  }

  .principle-layout {
    gap: 44px;
  }

  .principle-image-wrap {
    min-height: 300px;
  }

  .application-tabs {
    display: block;
  }

  .application-tabs button {
    min-height: 88px;
    border-right: 0;
  }

  .application-panel {
    min-height: 420px;
    padding: 34px 22px;
  }

  .panel-meta,
  .field-grid {
    grid-template-columns: 1fr;
  }

  .capability-layout {
    gap: 50px;
  }

  .capability-item {
    grid-template-columns: 44px 1fr;
  }

  .request-result-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .about-copy {
    padding-top: 26px;
  }

  .about-gallery {
    grid-template-columns: 1fr;
  }

  .about-image {
    min-height: 320px;
  }

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

  .contact-action > p,
  .contact-options,
  .contact-qr {
    grid-column: 1;
  }

  .contact-qr {
    grid-row: auto;
    width: 132px;
    height: 138px;
  }

  .contact-action .button {
    width: 100%;
  }

  .footer-main {
    grid-template-columns: 1fr;
    gap: 18px;
  }

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

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}