:root {
  --bg: #f4f6f8;
  --surface: #ffffff;
  --surface-strong: #0e1b2c;
  --text: #112033;
  --text-soft: #4f6275;
  --line: rgba(17, 32, 51, 0.12);
  --primary: #005f73;
  --primary-strong: #003845;
  --accent: #e9b44c;
  --accent-soft: rgba(233, 180, 76, 0.18);
  --shadow: 0 20px 60px rgba(9, 27, 45, 0.12);
  --radius: 24px;
  --container: min(1180px, calc(100% - 40px));
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Microsoft JhengHei", "PingFang TC", "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(0, 95, 115, 0.08), transparent 30%),
    linear-gradient(180deg, #f8fafb 0%, #f2f5f7 100%);
}

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

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

button {
  font: inherit;
}

.container {
  width: var(--container);
  margin: 0 auto;
}

.section {
  padding: 92px 0;
}

.section-alt {
  background: linear-gradient(180deg, rgba(0, 95, 115, 0.05), rgba(255, 255, 255, 0.8));
}

.section-accent {
  background:
    linear-gradient(135deg, #0e1b2c 0%, #173651 55%, #005f73 100%);
  color: #ffffff;
}

.section-label,
.eyebrow {
  margin: 0 0 14px;
  font-family: "Segoe UI", sans-serif;
  font-size: 0.88rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
}

.section-heading,
.header-row,
.footer-row,
.contact-layout,
.split-layout {
  display: flex;
  gap: 32px;
}

.section-heading {
  align-items: end;
  justify-content: space-between;
  margin-bottom: 32px;
}

.section-heading h2,
.section-copy h2,
.contact-copy h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.25rem);
  line-height: 1.08;
}

.section-copy p,
.contact-copy p,
.news-card p,
.product-card p,
.product-family-card p,
.application-card p,
.proof-card p,
.strength-card p,
.certificate-card p {
  line-height: 1.8;
  color: var(--text-soft);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(18px);
  background: rgba(244, 246, 248, 0.84);
  border-bottom: 1px solid rgba(17, 32, 51, 0.06);
}

.header-row {
  align-items: center;
  justify-content: space-between;
  min-height: 88px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
  padding: 8px 12px 8px 6px;
  border-radius: 999px;
  transition: background 0.25s ease, transform 0.25s ease;
}

.brand:hover,
.brand:focus-visible {
  background: rgba(255, 255, 255, 0.66);
  transform: translateY(-1px);
}

.brand-logo {
  flex: 0 0 auto;
  width: 148px;
  height: 50px;
  object-fit: contain;
}

.brand-company {
  max-width: 180px;
  font-size: 0.86rem;
  line-height: 1.35;
  letter-spacing: 0.01em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 26px;
}

.site-nav a {
  position: relative;
  padding: 8px 0;
  font-size: 0.95rem;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after,
.site-nav a[aria-current="page"]::after {
  transform: scaleX(1);
}

.site-nav a[aria-current="page"] {
  color: var(--primary);
  font-weight: 800;
}

.menu-toggle {
  display: none;
  width: 48px;
  height: 48px;
  border: 0;
  background: transparent;
  padding: 0;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  margin: 5px auto;
  background: var(--text);
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.hero {
  position: relative;
  overflow: clip;
}

.hero-slider {
  position: relative;
  min-height: min(86vh, 840px);
}

.hero-slide {
  position: absolute;
  inset: 0;
  display: grid;
  align-items: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.8s ease;
}

.hero-slide.is-active {
  opacity: 1;
  pointer-events: auto;
}

.hero-media {
  position: absolute;
  inset: 0;
}

.hero-media::before,
.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
}

.hero-media::before {
  background:
    linear-gradient(120deg, rgba(14, 27, 44, 0.88), rgba(14, 27, 44, 0.56)),
    linear-gradient(45deg, rgba(233, 180, 76, 0.2), transparent 55%);
}

.hero-media::after {
  background:
    radial-gradient(circle at 15% 20%, rgba(233, 180, 76, 0.22), transparent 18%),
    radial-gradient(circle at 85% 25%, rgba(0, 95, 115, 0.28), transparent 26%),
    linear-gradient(transparent 0 70%, rgba(255, 255, 255, 0.06) 70% 71%, transparent 71% 100%);
  opacity: 0.85;
}

.hero-media-a {
  background:
    linear-gradient(90deg, rgba(7, 25, 39, 0.92) 0%, rgba(7, 25, 39, 0.68) 52%, rgba(7, 25, 39, 0.2) 100%),
    url("assets/products/machine-02-dson-subtle.png") 78% 50% / cover no-repeat;
}

.hero-media-b {
  background:
    linear-gradient(90deg, rgba(7, 25, 39, 0.94) 0%, rgba(7, 25, 39, 0.72) 52%, rgba(7, 25, 39, 0.24) 100%),
    url("assets/products/machine-04-dson-subtle.png") 78% 50% / cover no-repeat;
}

.hero-media-c {
  background:
    linear-gradient(90deg, rgba(7, 25, 39, 0.94) 0%, rgba(7, 25, 39, 0.7) 52%, rgba(7, 25, 39, 0.18) 100%),
    url("assets/products/catalog/photovoltaic-chamber-dson.png") 78% 50% / cover no-repeat;
}

.hero-content {
  position: relative;
  z-index: 1;
  color: #ffffff;
  padding: 110px 0 160px;
}

.hero-content h1,
.hero-content h2 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(2.5rem, 6vw, 5.4rem);
  line-height: 1;
}

.hero-text {
  max-width: 720px;
  margin: 24px 0 0;
  font-size: 1.08rem;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.82);
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-top: 32px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 148px;
  min-height: 52px;
  padding: 0 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 700;
  transition: transform 0.25s ease, background 0.25s ease, border-color 0.25s ease;
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--accent);
  color: #0f1e2e;
}

.btn-secondary {
  border-color: rgba(255, 255, 255, 0.32);
  color: #ffffff;
  background: rgba(255, 255, 255, 0.06);
}

.hero-controls {
  position: absolute;
  left: 50%;
  bottom: 36px;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  z-index: 2;
}

.hero-dots {
  display: flex;
  gap: 10px;
}

.hero-dot,
.hero-arrow {
  border: 0;
}

.hero-dot {
  width: 44px;
  height: 4px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.28);
  transition: background 0.25s ease, transform 0.25s ease;
}

.hero-dot.is-active {
  background: var(--accent);
  transform: scaleX(1.1);
}

.hero-arrow {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  color: #ffffff;
  background: rgba(255, 255, 255, 0.12);
  cursor: pointer;
}

.split-layout {
  align-items: start;
  justify-content: space-between;
}

.section-copy,
.about-visual {
  flex: 1 1 0;
}

.about-tabs,
.visual-grid,
.product-grid,
.product-family-grid,
.application-grid,
.proof-grid,
.strength-grid,
.certificate-grid,
.news-grid {
  display: grid;
  gap: 20px;
}

.about-tabs {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 34px;
}

.about-tab,
.metric-card,
.product-card,
.product-family-card,
.application-card,
.proof-card,
.strength-card,
.certificate-card,
.news-card,
.contact-card {
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.about-tab,
.metric-card,
.product-family-card,
.application-card,
.proof-card,
.strength-card,
.certificate-card,
.news-card,
.contact-card {
  padding: 24px;
}

.about-tab h3,
.product-card h3,
.product-family-card h3,
.application-card h3,
.proof-card h3,
.strength-card h3,
.certificate-card h3,
.news-card h3,
.visual-card h3 {
  margin: 0 0 12px;
  font-size: 1.2rem;
}

.about-visual {
  display: grid;
  gap: 22px;
}

.visual-card {
  padding: 30px;
  border-radius: 32px;
  background:
    linear-gradient(135deg, rgba(0, 95, 115, 0.95), rgba(14, 27, 44, 0.98));
  color: #ffffff;
  box-shadow: var(--shadow);
}

.visual-card ul {
  margin: 18px 0 0;
  padding-left: 18px;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.82);
}

.visual-kicker {
  margin: 0 0 10px;
  color: rgba(255, 255, 255, 0.64);
  font-family: "Segoe UI", sans-serif;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

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

.metric-card {
  min-height: 132px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: linear-gradient(180deg, #ffffff, #f7fafb);
}

.metric-card strong {
  font-family: "Segoe UI", sans-serif;
  font-size: 2rem;
  color: var(--primary);
}

.metric-card span {
  margin-top: 8px;
  color: var(--text-soft);
}

.text-link {
  align-self: center;
  color: var(--primary);
  font-weight: 700;
}

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

.product-card {
  display: block;
  position: relative;
  padding: 28px;
  min-height: 220px;
  overflow: hidden;
  transition: transform 0.28s ease, box-shadow 0.28s ease, border-color 0.28s ease;
}

.product-card:hover,
.product-card:focus-within {
  transform: translateY(-4px);
  border-color: rgba(0, 95, 115, 0.16);
  box-shadow: 0 26px 56px rgba(9, 27, 45, 0.14);
}

.product-card-clickable {
  cursor: pointer;
}

.product-card-clickable:focus-visible,
.product-card-clickable.is-selected {
  outline: 3px solid rgba(233, 180, 76, 0.6);
  outline-offset: 4px;
  border-color: rgba(0, 95, 115, 0.28);
}

.product-card > * {
  position: relative;
  z-index: 1;
}

.product-card::before {
  content: "";
  position: absolute;
  inset: auto -40px -40px auto;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: var(--accent-soft);
}

.product-visual {
  position: relative;
  height: 246px;
  margin: -10px -10px 24px;
  border-radius: 28px;
  overflow: hidden;
  border: 1px solid rgba(17, 32, 51, 0.06);
  background:
    radial-gradient(circle at 16% 18%, rgba(255, 255, 255, 0.98), rgba(255, 255, 255, 0) 24%),
    linear-gradient(180deg, #fbfcfd 0%, #f0f4f7 100%);
  isolation: isolate;
}

.product-visual::before,
.product-visual::after {
  content: "";
  position: absolute;
}

.product-visual img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  z-index: 1;
  padding: 22px 22px 28px;
  filter: drop-shadow(0 18px 28px rgba(17, 32, 51, 0.16));
  transition: transform 0.32s ease, filter 0.32s ease;
}

.product-visual::before {
  inset: 0;
  background:
    radial-gradient(circle at 18% 22%, rgba(0, 95, 115, 0.12), rgba(0, 95, 115, 0) 30%),
    radial-gradient(circle at 82% 18%, rgba(233, 180, 76, 0.18), rgba(233, 180, 76, 0) 28%),
    linear-gradient(180deg, rgba(255, 255, 255, 0) 62%, rgba(213, 223, 230, 0.35) 100%);
  z-index: 0;
}

.product-visual::after {
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%);
  width: 70%;
  height: 22px;
  border-radius: 999px;
  background: radial-gradient(ellipse at center, rgba(15, 33, 49, 0.22), rgba(15, 33, 49, 0) 72%);
  z-index: 0;
}

.product-visual span {
  display: none;
}

.visual-machine-1 {
  background-image:
    radial-gradient(circle at 18% 20%, rgba(0, 95, 115, 0.12), rgba(0, 95, 115, 0) 28%),
    radial-gradient(circle at 84% 18%, rgba(233, 180, 76, 0.16), rgba(233, 180, 76, 0) 30%),
    linear-gradient(180deg, #fbfcfd 0%, #eff4f6 100%);
}

.visual-machine-2 {
  background-image:
    radial-gradient(circle at 80% 18%, rgba(0, 95, 115, 0.1), rgba(0, 95, 115, 0) 24%),
    radial-gradient(circle at 20% 20%, rgba(233, 180, 76, 0.16), rgba(233, 180, 76, 0) 28%),
    linear-gradient(180deg, #fbfcfd 0%, #eef4f7 100%);
}

.visual-machine-3 {
  background-image:
    radial-gradient(circle at 24% 18%, rgba(0, 95, 115, 0.13), rgba(0, 95, 115, 0) 26%),
    radial-gradient(circle at 78% 20%, rgba(17, 32, 51, 0.08), rgba(17, 32, 51, 0) 24%),
    linear-gradient(180deg, #fbfcfd 0%, #eef3f6 100%);
}

.visual-machine-4 {
  background-image:
    radial-gradient(circle at 22% 20%, rgba(233, 180, 76, 0.16), rgba(233, 180, 76, 0) 30%),
    radial-gradient(circle at 82% 20%, rgba(17, 32, 51, 0.08), rgba(17, 32, 51, 0) 22%),
    linear-gradient(180deg, #fbfcfd 0%, #edf3f5 100%);
}

.visual-machine-5 {
  background-image:
    radial-gradient(circle at 18% 20%, rgba(0, 95, 115, 0.12), rgba(0, 95, 115, 0) 30%),
    radial-gradient(circle at 78% 18%, rgba(233, 180, 76, 0.14), rgba(233, 180, 76, 0) 28%),
    linear-gradient(180deg, #fbfcfd 0%, #eef3f6 100%);
}

.visual-machine-6 {
  background-image:
    radial-gradient(circle at 20% 18%, rgba(0, 95, 115, 0.11), rgba(0, 95, 115, 0) 28%),
    radial-gradient(circle at 82% 18%, rgba(233, 180, 76, 0.15), rgba(233, 180, 76, 0) 24%),
    linear-gradient(180deg, #fbfcfd 0%, #edf3f5 100%);
}

.product-card:hover .product-visual img,
.product-card:focus-within .product-visual img {
  transform: translateY(-4px) scale(1.02);
  filter: drop-shadow(0 24px 32px rgba(17, 32, 51, 0.18));
}

.product-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  margin-bottom: 18px;
  border-radius: 16px;
  background: rgba(0, 95, 115, 0.1);
  color: var(--primary);
  font-family: "Segoe UI", sans-serif;
  font-weight: 700;
}

.product-action {
  display: inline-flex;
  align-items: center;
  margin-top: 16px;
  padding: 9px 13px;
  border-radius: 999px;
  background: rgba(0, 95, 115, 0.09);
  color: var(--primary);
  font-size: 0.9rem;
  font-weight: 800;
}

.product-family-showcase {
  margin-top: 44px;
  padding: 32px;
  border-radius: 28px;
  border: 1px solid rgba(0, 95, 115, 0.12);
  background:
    radial-gradient(circle at 10% 12%, rgba(233, 180, 76, 0.14), transparent 28%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(244, 248, 250, 0.9));
  box-shadow: 0 18px 48px rgba(9, 27, 45, 0.08);
}

.product-family-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 24px;
}

.product-family-card,
.application-card,
.proof-card {
  position: relative;
  overflow: hidden;
}

.product-family-card::before,
.application-card::before,
.proof-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background: var(--accent);
}

.product-family-card h3,
.application-card h3,
.proof-card h3 {
  margin-top: 0;
}

.application-grid,
.proof-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.application-card,
.proof-card {
  min-height: 210px;
  background: linear-gradient(180deg, #ffffff, #f8fbfc);
}

.proof-card {
  background: rgba(255, 255, 255, 0.9);
}

.spec-page {
  min-height: 68vh;
}

.spec-page h1 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.25rem);
  line-height: 1.08;
}

.spec-showcase {
  margin-top: 42px;
  display: grid;
  gap: 24px;
  scroll-margin-top: 112px;
}

.spec-showcase[hidden],
.spec-panel[hidden] {
  display: none;
}

.spec-intro {
  max-width: 860px;
}

.spec-intro h3 {
  margin: 0 0 14px;
  font-size: clamp(1.55rem, 3vw, 2.35rem);
  line-height: 1.12;
}

.spec-intro p {
  line-height: 1.8;
  color: var(--text-soft);
}

.spec-panel {
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 18px 48px rgba(9, 27, 45, 0.08);
}

.spec-panel + .spec-panel {
  margin-top: 24px;
}

.spec-panel-heading {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  margin-bottom: 22px;
}

.spec-panel-heading span {
  flex: 0 0 auto;
  display: inline-flex;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background: rgba(0, 95, 115, 0.1);
  color: var(--primary);
  font-weight: 800;
}

.spec-panel-heading h4 {
  margin: 0 0 8px;
  font-size: 1.35rem;
}

.spec-panel-heading p {
  margin: 0;
  line-height: 1.7;
  color: var(--text-soft);
}

.spec-table-wrap {
  overflow-x: auto;
  border: 1px solid rgba(17, 32, 51, 0.08);
  border-radius: 16px;
  background: #ffffff;
}

.spec-table {
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.spec-table-dense {
  font-size: 0.86rem;
}

.spec-table-dense th,
.spec-table-dense td {
  padding: 10px 12px;
}

.spec-table th,
.spec-table td {
  padding: 13px 14px;
  border-bottom: 1px solid rgba(17, 32, 51, 0.08);
  border-right: 1px solid rgba(17, 32, 51, 0.06);
  text-align: left;
  vertical-align: top;
  line-height: 1.55;
}

.spec-table th {
  background: rgba(0, 95, 115, 0.09);
  color: var(--primary-strong);
  font-weight: 800;
  white-space: nowrap;
}

.spec-table td:first-child {
  font-weight: 800;
  color: var(--primary-strong);
  white-space: nowrap;
}

.spec-table tr:last-child td,
.spec-table tr:last-child th {
  border-bottom: 0;
}

.spec-detail-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 18px;
}

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

.spec-detail-grid > div {
  padding: 18px;
  border-radius: 16px;
  background: rgba(0, 95, 115, 0.05);
}

.spec-detail-grid h5 {
  margin: 0 0 10px;
  color: var(--primary-strong);
  font-size: 1rem;
}

.spec-detail-grid ul {
  margin: 0;
  padding-left: 18px;
  color: var(--text-soft);
  line-height: 1.75;
}

.page-masthead {
  position: relative;
  min-height: 430px;
  display: flex;
  align-items: end;
  color: #ffffff;
  background-color: #102537;
  background-position: center;
  background-size: cover;
  overflow: hidden;
}

.page-masthead::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(8, 24, 38, 0.94) 0%, rgba(8, 24, 38, 0.76) 48%, rgba(8, 24, 38, 0.24) 100%);
}

.page-masthead-about {
  background-image: url("assets/products/machine-01-dson-subtle.png");
  background-position: 74% 48%;
}

.page-masthead-products {
  background-image: url("assets/products/machine-04-dson-subtle.png");
  background-position: 76% 50%;
}

.page-masthead-specs {
  background-image: url("assets/products/catalog/photovoltaic-chamber-dson.png");
  background-position: 72% 48%;
}

.page-masthead-content {
  position: relative;
  z-index: 1;
  padding: 90px 0 76px;
}

.page-masthead-content h1 {
  max-width: 900px;
  margin: 0;
  font-size: clamp(2.5rem, 5vw, 4rem);
  line-height: 1.04;
}

.page-masthead-content > p:not(.eyebrow) {
  max-width: 720px;
  margin: 24px 0 0;
  color: rgba(255, 255, 255, 0.82);
  line-height: 1.8;
}

.page-masthead .eyebrow {
  color: #f2c767;
}

.text-link-light {
  display: inline-flex;
  margin-top: 22px;
  color: #ffffff;
}

.catalog-jump {
  position: sticky;
  top: 88px;
  z-index: 20;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(16px);
}

.catalog-jump-row {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding: 14px 0;
  scrollbar-width: thin;
}

.catalog-jump a {
  flex: 0 0 auto;
  padding: 10px 14px;
  border: 1px solid rgba(0, 95, 115, 0.14);
  border-radius: 999px;
  color: var(--primary-strong);
  background: rgba(0, 95, 115, 0.06);
  font-size: 0.9rem;
  font-weight: 800;
}

.catalog-jump a:hover,
.catalog-jump a:focus-visible {
  color: #ffffff;
  background: var(--primary);
}

.catalog-jump-dense a {
  padding-inline: 12px;
  font-size: 0.84rem;
}

.catalog-product-grid .product-card {
  min-height: 520px;
}

.catalog-product-grid .product-action {
  position: absolute;
  left: 28px;
  bottom: 28px;
}

.catalog-spec-page {
  padding-top: 72px;
}

.catalog-spec-section {
  scroll-margin-top: 170px;
  padding: 34px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 18px 48px rgba(9, 27, 45, 0.08);
}

.catalog-spec-section + .catalog-spec-section {
  margin-top: 28px;
}

.catalog-spec-heading {
  display: grid;
  grid-template-columns: minmax(240px, 0.72fr) minmax(0, 1.28fr);
  align-items: center;
  gap: 34px;
  margin-bottom: 28px;
}

.catalog-spec-heading img {
  display: block;
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: contain;
  border: 1px solid rgba(17, 32, 51, 0.08);
  border-radius: 14px;
  background: #ffffff;
}

.catalog-spec-heading h2 {
  margin: 0;
  font-size: clamp(1.8rem, 4vw, 3rem);
  line-height: 1.08;
}

.catalog-spec-heading p:not(.section-label) {
  margin: 14px 0 0;
  color: var(--text-soft);
  line-height: 1.75;
}

.spec-disclaimer {
  margin-top: 30px;
  padding: 24px 28px;
  border-left: 5px solid var(--accent);
  border-radius: 12px;
  background: #ffffff;
  box-shadow: var(--shadow);
}

.spec-disclaimer p {
  margin: 8px 0 0;
  color: var(--text-soft);
}

.contact-card-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}

.contact-card-cta p {
  flex: 1 1 100%;
  margin: 0 0 8px;
  color: var(--text-soft);
  line-height: 1.75;
}

.portal-strip {
  background: #ffffff;
}

.portal-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.portal-card {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 22px;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #f8fbfc;
  box-shadow: var(--shadow);
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.portal-card:hover,
.portal-card:focus-visible {
  transform: translateY(-4px);
  border-color: rgba(0, 95, 115, 0.32);
}

.portal-card > span {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border-radius: 12px;
  color: var(--primary);
  background: rgba(0, 95, 115, 0.1);
  font-weight: 900;
}

.portal-card h2,
.portal-card p {
  margin: 0;
}

.portal-card h2 {
  font-size: 1.45rem;
}

.portal-card p {
  margin-top: 8px;
  color: var(--text-soft);
  line-height: 1.65;
}

.portal-card > strong {
  color: var(--primary);
}

.spec-note {
  margin: 0;
  padding: 18px 20px;
  border-left: 4px solid var(--accent);
  border-radius: 14px;
  background: rgba(233, 180, 76, 0.14);
  color: var(--text);
  font-weight: 700;
  line-height: 1.7;
}

.strength-grid,
.certificate-grid,
.news-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.strength-card,
.certificate-card {
  min-height: 220px;
}

.certificate-card span {
  display: inline-block;
  margin-bottom: 18px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(233, 180, 76, 0.18);
  color: #8b6200;
  font-family: "Segoe UI", sans-serif;
  font-weight: 700;
}

.news-card {
  min-height: 260px;
}

.news-type,
.contact-item span {
  font-size: 0.9rem;
  color: var(--primary);
  font-weight: 700;
}

.news-card time {
  display: block;
  margin-top: 22px;
  color: var(--text-soft);
  font-size: 0.95rem;
}

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

.contact-copy,
.contact-card {
  flex: 1 1 0;
}

.contact-card {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.14);
}

.contact-item + .contact-item {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
}

.contact-item span {
  display: block;
  color: rgba(255, 255, 255, 0.64);
  margin-bottom: 6px;
}

.contact-item strong {
  display: block;
  font-size: 1.05rem;
  line-height: 1.7;
}

.site-footer {
  padding: 28px 0 44px;
  background: #0b1625;
  color: rgba(255, 255, 255, 0.75);
}

.footer-row {
  align-items: center;
  justify-content: space-between;
}

.footer-brand {
  margin: 0 0 6px;
  color: #ffffff;
  font-weight: 700;
}

.footer-copy {
  margin: 0;
}

.footer-icp {
  margin: 8px 0 0;
}

.footer-icp a {
  color: inherit;
}

.footer-icp a:hover,
.footer-icp a:focus-visible {
  color: #ffffff;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

@media (max-width: 1080px) {
  .section {
    padding: 80px 0;
  }

  .header-row,
  .section-heading,
  .split-layout,
  .contact-layout {
    gap: 24px;
  }

  .brand-company {
    max-width: 162px;
    font-size: 0.8rem;
  }

  .hero-content {
    padding: 96px 0 150px;
  }

  .hero-content h1,
  .hero-content h2 {
    font-size: clamp(2.2rem, 5vw, 4.2rem);
  }

  .hero-text {
    max-width: 640px;
    font-size: 1rem;
  }

  .product-grid,
  .product-family-grid,
  .application-grid,
  .proof-grid,
  .strength-grid,
  .certificate-grid,
  .news-grid,
  .spec-detail-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .split-layout,
  .contact-layout {
    flex-direction: column;
  }

  .catalog-spec-heading {
    grid-template-columns: 1fr;
  }

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

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

@media (max-width: 860px) {
  .site-header {
    backdrop-filter: blur(12px);
  }

  .catalog-jump {
    top: 76px;
  }

  .header-row {
    min-height: 76px;
  }

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

  .brand {
    max-width: calc(100% - 64px);
  }

  .brand-logo {
    width: 128px;
    height: 44px;
  }

  .brand-company {
    max-width: 154px;
    font-size: 0.76rem;
  }

  .site-nav {
    position: absolute;
    left: 20px;
    right: 20px;
    top: calc(100% + 8px);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(255, 255, 255, 0.96);
    border: 1px solid var(--line);
    border-radius: 24px;
    box-shadow: var(--shadow);
    padding: 12px;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-8px);
    transition: opacity 0.25s ease, transform 0.25s ease;
  }

  .site-nav.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .site-nav a {
    padding: 14px 12px;
  }

  .hero-slider {
    min-height: 760px;
  }

  .hero-content {
    padding: 108px 0 166px;
  }

  .hero-content h1,
  .hero-content h2 {
    line-height: 1.06;
  }

  .hero-controls {
    width: var(--container);
    bottom: 28px;
  }

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

  .product-visual {
    height: 200px;
  }

  .spec-panel {
    padding: 22px;
  }

  .spec-panel-heading {
    flex-direction: column;
  }
}

@media (max-width: 640px) {
  .section {
    padding: 68px 0;
  }

  .product-grid,
  .product-family-grid,
  .application-grid,
  .proof-grid,
  .strength-grid,
  .certificate-grid,
  .news-grid,
  .spec-detail-grid,
  .visual-grid {
    grid-template-columns: 1fr;
  }

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

  .page-masthead {
    min-height: 390px;
  }

  .page-masthead-content {
    padding: 72px 0 60px;
  }

  .catalog-spec-section {
    padding: 20px;
  }

  .catalog-product-grid .product-card {
    min-height: 470px;
  }

  .catalog-product-grid .product-action {
    left: 22px;
    bottom: 22px;
  }

  .portal-card {
    grid-template-columns: auto 1fr;
    padding: 22px;
  }

  .portal-card > strong {
    grid-column: 2;
  }

  .spec-table {
    min-width: 820px;
  }

  .header-row,
  .footer-row,
  .section-heading,
  .hero-controls {
    gap: 16px;
  }

  .hero-controls {
    width: var(--container);
  }

  .brand {
    padding-right: 0;
  }

  .brand-logo {
    width: 122px;
    height: 42px;
  }

  .brand-company {
    font-size: 0.74rem;
  }

  .hero-content {
    padding: 104px 0 142px;
  }

  .hero-content h1,
  .hero-content h2 {
    font-size: clamp(2rem, 10vw, 3rem);
  }

  .hero-text {
    font-size: 0.96rem;
    line-height: 1.8;
  }

  .hero-actions {
    gap: 12px;
  }

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

  .hero-arrow {
    width: 42px;
    height: 42px;
  }

  .hero-dot {
    width: 28px;
  }

  .product-card,
  .product-family-card,
  .application-card,
  .proof-card,
  .strength-card,
  .certificate-card,
  .news-card,
  .contact-card,
  .about-tab,
  .metric-card {
    padding: 22px;
  }

  .product-visual {
    height: 180px;
    margin: -4px -4px 18px;
  }

  .footer-row,
  .section-heading {
    flex-direction: column;
    align-items: start;
  }
}

@media (max-width: 480px) {
  :root {
    --container: min(1180px, calc(100% - 24px));
  }

  .header-row {
    min-height: 70px;
  }

  .menu-toggle {
    width: 42px;
    height: 42px;
  }

  .brand-logo {
    width: 132px;
    height: 44px;
  }

  .brand-company {
    display: none;
  }

  .site-nav {
    left: 12px;
    right: 12px;
  }

  .site-nav a {
    font-size: 0.92rem;
  }

  .section-heading h2,
  .section-copy h2,
  .contact-copy h2 {
    font-size: clamp(1.8rem, 8vw, 2.35rem);
  }

  .product-card {
    padding: 18px;
  }

  .product-visual {
    height: 164px;
  }

  .metric-card strong {
    font-size: 1.72rem;
  }

  .contact-item strong {
    font-size: 0.98rem;
  }
}

/* Product catalogue: compact desktop grid and mobile snap-by-product browsing. */
.catalog-masthead {
  min-height: 330px;
}

.catalog-section-intro {
  padding: 42px 0 24px;
}

.catalog-section-intro h2,
.catalog-section-intro p {
  margin: 0;
}

.catalog-section-intro h2 {
  margin-top: 8px;
  font-size: clamp(1.9rem, 4vw, 2.7rem);
}

.catalog-section-intro > p:not(.section-label) {
  margin-top: 10px;
  color: var(--text-soft);
  line-height: 1.7;
}

.product-snap-deck {
  width: var(--container);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
  padding: 0 0 84px;
}

.product-snap-deck .product-card {
  min-height: 0;
  padding: 20px;
}

.product-snap-deck .product-visual {
  height: 220px;
  margin: -4px -4px 18px;
}

.product-snap-deck .product-visual img {
  padding: 12px 14px 18px;
}

.product-card-copy {
  display: grid;
  align-content: start;
}

.product-card-copy .product-badge {
  width: 40px;
  height: 40px;
  margin: 0 0 10px;
  border-radius: 12px;
  font-size: 0.86rem;
}

.product-family {
  margin: 0 0 6px;
  color: var(--primary);
  font: 800 0.74rem/1 "Segoe UI", sans-serif;
  letter-spacing: 0.08em;
}

.product-snap-deck .product-card h3 {
  margin: 0;
  font-size: 1.35rem;
  line-height: 1.25;
}

.product-snap-deck .product-card p:not(.product-family) {
  margin: 10px 0 0;
  line-height: 1.65;
}

.product-snap-deck .product-action {
  position: static;
  width: fit-content;
  margin-top: 14px;
  padding: 8px 12px;
  font-size: 0.84rem;
}

.catalog-side-nav {
  position: fixed;
  top: 50%;
  left: max(14px, calc((100vw - 1320px) / 2 - 72px));
  z-index: 30;
  display: grid;
  gap: 8px;
  transform: translateY(-50%);
}

.catalog-side-nav a {
  display: grid;
  grid-template-columns: 30px auto;
  align-items: center;
  gap: 7px;
  min-width: 78px;
  padding: 7px 9px 7px 7px;
  border: 1px solid rgba(0, 95, 115, 0.16);
  border-radius: 12px;
  color: var(--primary-strong);
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 8px 22px rgba(9, 27, 45, 0.12);
  font-size: 0.72rem;
  font-weight: 800;
}

.catalog-side-nav span {
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  border-radius: 9px;
  color: #ffffff;
  background: var(--primary);
}

.catalog-side-nav a:hover,
.catalog-side-nav a:focus-visible {
  color: #ffffff;
  background: var(--primary);
}

.catalog-side-nav a:hover span,
.catalog-side-nav a:focus-visible span {
  color: var(--primary);
  background: #ffffff;
}

.home-product-overview {
  padding-top: 76px;
  padding-bottom: 76px;
}

.overview-intro {
  max-width: 720px;
  margin: -8px 0 26px;
  color: var(--text-soft);
  line-height: 1.75;
}

.overview-product-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.overview-product-grid a {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4px 10px;
  align-items: center;
  min-height: 76px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--text);
  background: #ffffff;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.overview-product-grid a:hover,
.overview-product-grid a:focus-visible {
  transform: translateY(-3px);
  border-color: rgba(0, 95, 115, 0.32);
  box-shadow: 0 12px 28px rgba(9, 27, 45, 0.1);
}

.overview-product-grid span {
  grid-row: span 2;
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 10px;
  color: var(--primary);
  background: rgba(0, 95, 115, 0.1);
  font: 800 0.78rem/1 "Segoe UI", sans-serif;
}

.overview-product-grid strong {
  font-size: 0.93rem;
  line-height: 1.35;
}

.overview-product-grid small {
  color: var(--text-soft);
  font: 700 0.68rem/1 "Segoe UI", sans-serif;
  letter-spacing: 0.06em;
}

.detail-back {
  margin-left: auto;
  color: var(--primary);
  font-size: 0.92rem;
  font-weight: 800;
}

.product-detail-hero {
  min-height: 540px;
  padding: 130px 0 72px;
  color: #ffffff;
  background: linear-gradient(135deg, #0e293b, #155a66);
}

.product-detail-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 0.85fr);
  align-items: center;
  gap: 54px;
}

.product-detail-hero h1 {
  max-width: 680px;
  margin: 0;
  font-size: clamp(2.3rem, 5vw, 4.4rem);
  line-height: 1.08;
}

.product-detail-hero p:not(.eyebrow) {
  max-width: 650px;
  margin: 20px 0 0;
  color: rgba(255, 255, 255, 0.84);
  line-height: 1.8;
}

.product-detail-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.product-detail-image {
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 18px;
  background: #ffffff;
  box-shadow: 0 24px 50px rgba(0, 0, 0, 0.22);
}

.product-detail-image img {
  display: block;
  width: 100%;
  aspect-ratio: 1 / 0.78;
  object-fit: contain;
}

.product-detail-content {
  padding-top: 74px;
  padding-bottom: 74px;
}

.product-full-specs {
  padding-top: 24px;
  padding-bottom: 74px;
  background: #f5f8fb;
}

.product-full-spec-table + .product-full-spec-table {
  margin-top: 20px;
}

.product-full-specs .section-heading p:not(.section-label) {
  max-width: 720px;
  margin: 10px 0 0;
  color: var(--muted);
}

.product-spec-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 24px 0 38px;
}

.product-spec-list div {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #ffffff;
}

.product-spec-list dt {
  color: var(--primary);
  font-size: 0.86rem;
  font-weight: 800;
}

.product-spec-list dd {
  margin: 10px 0 0;
  line-height: 1.65;
}

.product-detail-feature {
  padding: 30px;
  border-radius: 18px;
  background: rgba(0, 95, 115, 0.07);
}

.product-detail-feature h2 {
  margin: 8px 0 16px;
}

.product-detail-feature ul {
  margin: 0;
  padding-left: 20px;
  line-height: 1.85;
}

.product-detail-note {
  margin: 20px 0 0;
  padding: 14px 16px;
  border-left: 4px solid var(--accent);
  background: rgba(255, 255, 255, 0.7);
  line-height: 1.7;
}

@media (max-width: 1080px) {
  .product-snap-deck { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .overview-product-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .product-detail-hero-grid { grid-template-columns: 1fr 0.8fr; gap: 32px; }
}

@media (max-width: 640px) {
  .catalog-masthead { min-height: 180px; }
  .catalog-masthead .page-masthead-content { padding: 36px 0 30px; }
  .catalog-masthead .page-masthead-content h1 { font-size: 2rem; }
  .catalog-masthead .page-masthead-content > p:not(.eyebrow) { margin-top: 10px; font-size: 0.88rem; line-height: 1.55; }
  .catalog-section-intro { padding: 20px 28px 14px; }
  .catalog-section-intro h2 { font-size: 1.25rem; }
  .catalog-section-intro > p:not(.section-label) { margin-top: 5px; font-size: 0.78rem; line-height: 1.45; }
  .catalog-section-intro .section-label { margin: 0; font-size: 0.68rem; }
  .catalog-side-nav { top: 50%; bottom: auto; left: 8px; transform: translateY(-50%); gap: 6px; }
  .catalog-side-nav a { grid-template-columns: 28px; min-width: 0; padding: 5px; border-radius: 10px; }
  .catalog-side-nav b { display: none; }
  .catalog-side-nav span { width: 28px; height: 28px; font-size: 0.75rem; }
  .product-snap-deck { width: 100%; height: calc(100dvh - 70px); display: block; overflow-y: auto; overscroll-behavior-y: contain; scroll-snap-type: y mandatory; scroll-padding-top: 0; padding: 0; scrollbar-width: none; }
  .product-snap-deck::-webkit-scrollbar { display: none; }
  .product-snap-deck .product-card { min-height: 100%; height: 100%; display: grid; grid-template-rows: minmax(0, 34vh) auto; align-content: start; scroll-snap-align: start; scroll-snap-stop: always; padding: 14px 20px 14px 46px; border-radius: 0; border-width: 0 0 1px; box-shadow: none; }
  .product-snap-deck .product-visual { height: auto; min-height: 0; margin: 0 -4px 10px -4px; border-radius: 14px; }
  .product-snap-deck .product-visual img { padding: 6px 8px 10px; }
  .product-card-copy .product-badge { width: 34px; height: 34px; margin-bottom: 7px; border-radius: 10px; }
  .product-family { margin-bottom: 4px; font-size: 0.66rem; }
  .product-snap-deck .product-card h3 { font-size: 1.2rem; }
  .product-snap-deck .product-card p:not(.product-family) { display: -webkit-box; overflow: hidden; margin-top: 7px; font-size: 0.9rem; line-height: 1.55; -webkit-box-orient: vertical; -webkit-line-clamp: 3; }
  .product-snap-deck .product-action { margin-top: 10px; padding: 7px 11px; font-size: 0.8rem; }
  .overview-product-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 9px; }
  .overview-product-grid a { min-height: 66px; padding: 10px; gap: 3px 8px; }
  .overview-product-grid span { width: 28px; height: 28px; border-radius: 8px; font-size: 0.68rem; }
  .overview-product-grid strong { font-size: 0.78rem; }
  .overview-product-grid small { font-size: 0.58rem; }
  .overview-intro { margin: -8px 0 18px; font-size: 0.9rem; }
  .home-product-overview { padding-top: 58px; padding-bottom: 58px; }
  .product-detail-hero { min-height: 0; padding: 96px 0 38px; }
  .product-detail-hero-grid { grid-template-columns: 1fr; gap: 26px; }
  .product-detail-hero h1 { font-size: 2.15rem; }
  .product-detail-hero p:not(.eyebrow) { margin-top: 13px; font-size: 0.94rem; line-height: 1.65; }
  .product-detail-actions { margin-top: 22px; }
  .product-detail-actions .btn { width: 100%; }
  .product-detail-image img { aspect-ratio: 1 / 0.72; }
  .product-detail-content { padding-top: 52px; padding-bottom: 52px; }
  .product-spec-list { grid-template-columns: 1fr; gap: 10px; margin: 18px 0 26px; }
  .product-spec-list div { padding: 15px; }
  .product-detail-feature { padding: 20px; }
  .detail-back { font-size: 0.84rem; }
}

/* Selection guide */
.selection-hero {
  position: relative;
  overflow: hidden;
  color: #ffffff;
  background:
    radial-gradient(circle at 76% 18%, rgba(233, 180, 76, 0.22), transparent 24%),
    linear-gradient(135deg, #0b1726 0%, #12324b 58%, #005f73 100%);
}

.selection-hero::after {
  content: "";
  position: absolute;
  right: -8vw;
  bottom: -22vw;
  width: min(54vw, 720px);
  aspect-ratio: 1;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 50%;
  box-shadow:
    0 0 0 64px rgba(255, 255, 255, 0.025),
    0 0 0 128px rgba(255, 255, 255, 0.018);
}

.selection-hero-grid {
  position: relative;
  z-index: 1;
  min-height: 620px;
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(330px, 0.75fr);
  align-items: center;
  gap: clamp(44px, 7vw, 92px);
  padding: 94px 0;
}

.selection-hero-copy h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(3rem, 6.5vw, 5.8rem);
  line-height: 0.98;
  letter-spacing: -0.045em;
}

.selection-hero-copy > p:not(.eyebrow) {
  max-width: 720px;
  margin: 28px 0 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: 1.08rem;
  line-height: 1.85;
}

.selection-scope-card {
  padding: 34px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 28px;
  background: rgba(7, 19, 31, 0.56);
  box-shadow: 0 28px 80px rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(12px);
}

.selection-card-kicker,
.selection-path-label {
  margin: 0 0 10px;
  color: var(--accent);
  font-family: "Segoe UI", sans-serif;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.selection-scope-card h2 {
  margin: 0;
  font-size: 1.7rem;
  line-height: 1.22;
}

.selection-scope-card ul {
  margin: 24px 0;
  padding-left: 20px;
  color: rgba(255, 255, 255, 0.78);
  line-height: 1.75;
}

.selection-scope-card li + li {
  margin-top: 12px;
}

.selection-scope-card li strong {
  color: #ffffff;
}

.selection-principle-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.selection-principle-grid article {
  min-height: 250px;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, #ffffff, #f7fafb);
  box-shadow: var(--shadow);
}

.selection-principle-grid span {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  border-radius: 14px;
  color: var(--primary);
  background: rgba(0, 95, 115, 0.1);
  font-weight: 900;
}

.selection-principle-grid h3 {
  margin: 42px 0 12px;
  font-size: 1.25rem;
}

.selection-principle-grid p,
.selection-heading p {
  color: var(--text-soft);
  line-height: 1.75;
}

.selection-heading {
  align-items: start;
}

.selection-heading > div {
  max-width: 760px;
}

.selection-heading h2 {
  margin-bottom: 14px;
}

.selection-heading p {
  margin: 0;
}

.selection-path-list {
  display: grid;
  gap: 22px;
}

.selection-path-card {
  display: grid;
  grid-template-columns: 92px minmax(0, 1.15fr) minmax(250px, 0.82fr) minmax(250px, 0.82fr);
  gap: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 26px;
  background: #ffffff;
  box-shadow: 0 14px 44px rgba(9, 27, 45, 0.08);
}

.selection-path-card > div {
  min-width: 0;
  padding: 28px;
}

.selection-path-card > div + div {
  border-left: 1px solid var(--line);
}

.selection-path-index {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  color: #ffffff;
  background: var(--surface-strong);
}

.selection-path-index span {
  font-family: "Segoe UI", sans-serif;
  font-size: 1.55rem;
  font-weight: 900;
}

.selection-path-index small {
  writing-mode: vertical-rl;
  color: rgba(255, 255, 255, 0.5);
  font-family: "Segoe UI", sans-serif;
  letter-spacing: 0.16em;
}

.selection-path-main h3 {
  margin: 0 0 22px;
  font-size: 1.42rem;
  line-height: 1.34;
}

.verified-fact {
  padding: 18px;
  border-radius: 16px;
  background: rgba(0, 95, 115, 0.065);
}

.verified-fact > strong {
  color: var(--primary);
  font-size: 0.82rem;
}

.verified-fact p {
  margin: 8px 0 0;
  color: var(--text-soft);
  line-height: 1.7;
}

.source-row,
.entry-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.source-link,
.entry-links a {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 8px 11px;
  border-radius: 10px;
  font-size: 0.78rem;
  font-weight: 800;
  line-height: 1.35;
}

.source-link {
  color: var(--primary-strong);
  background: #ffffff;
  border: 1px solid rgba(0, 95, 115, 0.18);
}

.source-link:hover,
.source-link:focus-visible {
  border-color: var(--primary);
  text-decoration: underline;
}

.source-link-dark {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.18);
}

.selection-question-block h4,
.selection-entry-block h4 {
  margin: 0 0 14px;
  color: var(--primary-strong);
  font-size: 0.92rem;
}

.selection-question-block ul {
  margin: 0;
  padding-left: 18px;
  color: var(--text-soft);
  line-height: 1.68;
}

.selection-question-block li + li {
  margin-top: 8px;
}

.entry-links {
  margin-top: 0;
}

.entry-links a {
  color: #ffffff;
  background: var(--primary);
}

.entry-links a:hover,
.entry-links a:focus-visible {
  background: var(--primary-strong);
}

.pending-note {
  margin: 18px 0 0;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
  color: var(--text-soft);
  font-size: 0.86rem;
  line-height: 1.65;
}

.selection-path-pending .selection-path-index {
  background: #604a1c;
}

.selection-path-pending .selection-entry-block {
  background: rgba(233, 180, 76, 0.08);
}

.selection-checklist {
  background: #ffffff;
}

.selection-checklist-layout {
  display: grid;
  grid-template-columns: minmax(260px, 0.65fr) minmax(0, 1.35fr);
  gap: 74px;
  align-items: start;
}

.selection-checklist-copy {
  position: sticky;
  top: 126px;
}

.selection-checklist-copy h2 {
  margin: 0;
  font-size: clamp(2.2rem, 4vw, 3.5rem);
  line-height: 1.05;
}

.selection-checklist-copy > p:not(.section-label) {
  margin: 20px 0 28px;
  color: var(--text-soft);
  line-height: 1.8;
}

.selection-checklist-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.selection-checklist-grid li {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 14px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #f8fafb;
}

.selection-checklist-grid li > span {
  color: var(--primary);
  font-family: "Segoe UI", sans-serif;
  font-weight: 900;
}

.selection-checklist-grid strong {
  display: block;
  margin-bottom: 6px;
}

.selection-checklist-grid p {
  margin: 0;
  color: var(--text-soft);
  font-size: 0.9rem;
  line-height: 1.6;
}

.verification-layout {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: 70px;
  align-items: start;
}

.verification-layout h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.35rem);
  line-height: 1.08;
}

.verification-layout ul {
  margin: 0;
  padding-left: 22px;
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.8;
}

.verification-layout li + li {
  margin-top: 12px;
}

@media (max-width: 1120px) {
  .selection-hero-grid {
    grid-template-columns: 1fr 360px;
    gap: 40px;
  }

  .selection-path-card {
    grid-template-columns: 76px repeat(2, minmax(0, 1fr));
  }

  .selection-path-main {
    grid-column: span 2;
  }

  .selection-path-card .selection-question-block {
    grid-column: 2;
    border-top: 1px solid var(--line);
  }

  .selection-path-card .selection-entry-block {
    border-top: 1px solid var(--line);
  }
}

@media (max-width: 820px) {
  .selection-hero-grid {
    min-height: 0;
    grid-template-columns: 1fr;
    padding: 74px 0;
  }

  .selection-hero-copy h1 {
    font-size: clamp(2.65rem, 12vw, 4.8rem);
  }

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

  .selection-principle-grid article {
    min-height: 0;
  }

  .selection-principle-grid h3 {
    margin-top: 26px;
  }

  .selection-checklist-layout,
  .verification-layout {
    gap: 38px;
  }

  .selection-checklist-copy {
    position: static;
  }
}

@media (max-width: 640px) {
  .selection-hero-grid {
    gap: 32px;
    padding: 58px 0;
  }

  .selection-hero-copy h1 br {
    display: none;
  }

  .selection-hero-copy > p:not(.eyebrow) {
    font-size: 0.96rem;
  }

  .selection-scope-card {
    padding: 24px;
    border-radius: 22px;
  }

  .selection-path-card {
    grid-template-columns: 1fr;
    border-radius: 20px;
  }

  .selection-path-card > div {
    padding: 22px;
  }

  .selection-path-card > div + div,
  .selection-path-card .selection-question-block,
  .selection-path-card .selection-entry-block {
    grid-column: auto;
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .selection-path-index {
    flex-direction: row;
    justify-content: space-between;
  }

  .selection-path-index small {
    writing-mode: initial;
  }

  .selection-path-main {
    grid-column: auto;
  }

  .selection-path-main h3 {
    font-size: 1.25rem;
  }

  .source-row,
  .entry-links {
    display: grid;
  }

  .source-link,
  .entry-links a {
    width: 100%;
    min-height: 44px;
  }

  .selection-checklist-grid {
    grid-template-columns: 1fr;
  }

  .selection-checklist-grid li {
    padding: 18px;
  }
}

.compact-contact-widget {
  bottom: 22px;
  position: fixed;
  right: 22px;
  z-index: 80;
}

.compact-contact-toggle {
  align-items: center;
  background: var(--primary);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 999px;
  box-shadow: 0 14px 36px rgba(0, 56, 69, 0.26);
  color: #ffffff;
  cursor: pointer;
  display: inline-flex;
  font-size: 0.86rem;
  font-weight: 800;
  height: 50px;
  justify-content: center;
  letter-spacing: 0.04em;
  min-width: 58px;
  padding: 0 16px;
}

.compact-contact-toggle:hover,
.compact-contact-toggle:focus-visible {
  background: var(--primary-strong);
  outline: none;
}

.compact-contact-widget.is-open .compact-contact-toggle {
  display: none;
}

.compact-contact-panel {
  background: rgba(255, 255, 255, 0.98);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow);
  color: var(--text);
  display: grid;
  gap: 10px;
  max-width: min(300px, calc(100vw - 28px));
  padding: 16px;
  width: 300px;
}

.compact-contact-panel[hidden] {
  display: none;
}

.compact-contact-head {
  align-items: center;
  display: flex;
  gap: 12px;
  justify-content: space-between;
}

.compact-contact-head strong {
  font-size: 1rem;
}

.compact-contact-head button {
  align-items: center;
  background: #eef3f5;
  border: 0;
  border-radius: 999px;
  color: var(--text);
  cursor: pointer;
  display: inline-flex;
  font-size: 1.15rem;
  height: 30px;
  justify-content: center;
  line-height: 1;
  width: 30px;
}

.compact-contact-panel p {
  color: var(--text-soft);
  font-size: 0.82rem;
  line-height: 1.55;
  margin: 0;
}

.compact-contact-panel a {
  align-items: center;
  background: #f4f7f8;
  border: 1px solid rgba(17, 32, 51, 0.08);
  border-radius: 12px;
  color: var(--primary-strong);
  display: flex;
  font-size: 0.82rem;
  font-weight: 800;
  min-height: 38px;
  padding: 9px 11px;
}

.compact-contact-panel a:hover,
.compact-contact-panel a:focus-visible {
  border-color: rgba(0, 95, 115, 0.36);
  outline: none;
}

@media (max-width: 640px) {
  .compact-contact-widget {
    bottom: 14px;
    right: 14px;
  }

  .compact-contact-toggle {
    font-size: 0.8rem;
    height: 46px;
    min-width: 52px;
    padding: 0 13px;
  }

  .compact-contact-panel {
    border-radius: 16px;
    gap: 8px;
    padding: 14px;
    width: min(278px, calc(100vw - 28px));
  }

  .compact-contact-panel p {
    font-size: 0.78rem;
  }

  .compact-contact-panel a {
    font-size: 0.78rem;
    min-height: 36px;
  }
}