:root {
  --ink: #13202f;
  --muted: #647184;
  --line: #dbe3ed;
  --soft: #f5f8fb;
  --blue: #155ac8;
  --blue-dark: #0c3f92;
  --teal: #20a6a1;
  --red: #d9232f;
  --green: #78bd38;
  --shadow: 0 24px 60px rgba(19, 32, 47, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: #ffffff;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) 190px minmax(170px, auto);
  align-items: center;
  gap: clamp(16px, 2vw, 28px);
  min-height: 82px;
  padding: 14px clamp(20px, 5vw, 72px);
  background: rgba(255, 255, 255, 0.88);
  border-bottom: 1px solid rgba(219, 227, 237, 0.78);
  backdrop-filter: blur(18px);
}

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

.brand-logo {
  display: block;
  width: clamp(126px, 12vw, 168px);
  height: auto;
}

.desktop-nav {
  justify-self: center;
  display: flex;
  align-items: center;
  gap: clamp(12px, 1.35vw, 24px);
  min-width: 0;
  color: #46556a;
  font-size: clamp(13px, 0.95vw, 15px);
  font-weight: 600;
}

.desktop-nav a {
  white-space: nowrap;
  transition: color 180ms ease;
}

.desktop-nav a:hover {
  color: var(--blue);
}

.language-control {
  display: inline-grid;
  gap: 4px;
  width: 190px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
}

.language-control select {
  min-height: 40px;
  width: 100%;
  padding: 0 34px 0 12px;
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.76);
  cursor: pointer;
}

.header-action,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 700;
  white-space: nowrap;
  cursor: pointer;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease, background 180ms ease;
}

.header-action,
.button.primary {
  color: #ffffff;
  background: var(--blue);
  box-shadow: 0 12px 26px rgba(21, 90, 200, 0.2);
}

@media (max-width: 1320px) {
  .header-action {
    display: none;
  }

  .site-header {
    grid-template-columns: auto minmax(0, 1fr) 180px;
  }

  .language-control {
    width: 180px;
  }
}

@media (min-width: 1101px) and (max-width: 1180px) {
  .desktop-nav {
    gap: 12px;
    font-size: 13px;
  }

  .language-control {
    width: 158px;
  }

  .site-header {
    grid-template-columns: auto minmax(0, 1fr) 158px;
  }
}

.button.secondary {
  color: var(--ink);
  background: #ffffff;
  border-color: var(--line);
}

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

.menu-button {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #ffffff;
}

.menu-button span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 5px auto;
  background: var(--ink);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(420px, 1.08fr);
  gap: clamp(34px, 5vw, 72px);
  min-height: calc(100vh - 82px);
  padding: clamp(58px, 7vw, 92px) clamp(20px, 5vw, 72px) 54px;
  align-items: center;
  background:
    linear-gradient(112deg, rgba(245, 248, 251, 0.2), rgba(245, 248, 251, 0.88) 64%, #ffffff),
    #ffffff;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 760px;
  margin-bottom: 22px;
  font-size: clamp(42px, 6vw, 76px);
  line-height: 0.98;
  letter-spacing: 0;
}

.hero-lede {
  max-width: 620px;
  color: var(--muted);
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 34px 0 34px;
}

.proof-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  max-width: 560px;
  margin: 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.72);
}

.proof-strip div {
  padding: 0 16px;
  border-right: 1px solid var(--line);
}

.proof-strip div:first-child {
  padding-left: 0;
}

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

.proof-strip dt {
  color: var(--ink);
  font-size: 25px;
  font-weight: 800;
}

.proof-strip dd {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.35;
}

.hero-media {
  position: relative;
  height: clamp(500px, 46vw, 680px);
  min-height: 560px;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 24px 70px rgba(19, 32, 47, 0.16);
  background: #edf4f9;
}

.hero-media img {
  width: 100%;
  height: 100%;
  min-height: 0;
  object-fit: cover;
  object-position: center;
  display: block;
}

.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(237, 244, 249, 0.88) 0%, rgba(237, 244, 249, 0.1) 42%, rgba(19, 32, 47, 0.05) 100%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.18), rgba(19, 32, 47, 0.08));
  pointer-events: none;
}

.hero-media-overlay {
  position: absolute;
  left: clamp(22px, 4vw, 46px);
  bottom: clamp(22px, 4vw, 46px);
  bottom: auto;
  top: auto;
  z-index: 1;
  width: min(360px, calc(100% - 44px));
  padding: 20px 22px;
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: blur(18px);
  box-shadow: 0 18px 42px rgba(19, 32, 47, 0.16);
}

.hero-media-overlay span,
.panel-kicker {
  display: block;
  margin-bottom: 8px;
  color: var(--teal);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.hero-media-overlay strong {
  display: block;
  margin-bottom: 8px;
  font-size: clamp(28px, 4vw, 46px);
  line-height: 1;
}

.hero-media-overlay small {
  color: var(--muted);
  line-height: 1.5;
}

section {
  padding: 78px clamp(20px, 5vw, 72px);
}

.applications-preview {
  background: var(--ink);
  color: #ffffff;
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: 42px;
  align-items: end;
  margin-bottom: 34px;
}

.section-heading h2 {
  margin-bottom: 0;
  font-size: clamp(30px, 4vw, 50px);
  line-height: 1.05;
  letter-spacing: 0;
}

.section-heading p:not(.eyebrow) {
  color: var(--muted);
  line-height: 1.7;
}

.section-heading.narrow {
  display: block;
  max-width: 760px;
}

.application-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 22px;
}

.tab {
  min-height: 42px;
  padding: 0 16px;
  color: rgba(255, 255, 255, 0.76);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.06);
  cursor: pointer;
}

.tab.is-active {
  color: #ffffff;
  border-color: rgba(32, 166, 161, 0.9);
  background: rgba(32, 166, 161, 0.24);
}

.application-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 0.72fr);
  gap: 34px;
  padding: clamp(24px, 4vw, 42px);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(21, 90, 200, 0.22), rgba(32, 166, 161, 0.1)),
    rgba(255, 255, 255, 0.05);
}

.application-panel h3 {
  margin-bottom: 14px;
  font-size: clamp(25px, 3vw, 38px);
  letter-spacing: 0;
}

.application-panel p,
.application-panel li {
  color: rgba(255, 255, 255, 0.76);
  line-height: 1.72;
}

.application-panel ul {
  margin: 0;
  padding-left: 20px;
}

.materials {
  background: #ffffff;
}

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

.material-card {
  min-height: 250px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
}

.material-card span {
  color: var(--teal);
  font-size: 13px;
  font-weight: 800;
}

.material-card h3 {
  margin: 54px 0 12px;
  font-size: 23px;
}

.material-card p {
  color: var(--muted);
  line-height: 1.65;
}

.performance {
  background: linear-gradient(180deg, #ffffff 0%, var(--soft) 100%);
}

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

.data-card {
  display: grid;
  grid-template-columns: minmax(230px, 0.7fr) minmax(0, 1fr);
  gap: 18px;
  align-items: center;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: 0 16px 44px rgba(19, 32, 47, 0.08);
}

.data-card.compact {
  grid-column: 1 / -1;
  grid-template-columns: minmax(240px, 0.5fr) minmax(0, 0.5fr);
}

.data-card span {
  display: block;
  margin-bottom: 10px;
  color: var(--teal);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.data-card strong {
  display: block;
  margin-bottom: 12px;
  color: var(--ink);
  font-size: clamp(21px, 2.4vw, 30px);
  line-height: 1.15;
}

.data-card p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.6;
}

.data-card img {
  width: 100%;
  max-height: 280px;
  object-fit: contain;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #ffffff;
}

.radioactivity-table {
  width: 100%;
  table-layout: fixed;
  border-collapse: separate;
  border-spacing: 0;
  border: 1px solid #111827;
  border-radius: 6px;
  background: #ffffff;
  color: var(--ink);
  font-size: clamp(13px, 1.15vw, 17px);
  line-height: 1.2;
  overflow: hidden;
}

.radioactivity-table th,
.radioactivity-table td {
  height: 78px;
  padding: 14px 12px;
  border: 0;
  border-right: 1px solid #111827;
  border-bottom: 1px solid #111827;
  text-align: center;
  vertical-align: middle;
}

.radioactivity-table th:first-child {
  width: 27%;
}

.radioactivity-table th:nth-child(2) {
  width: 13%;
}

.radioactivity-table th:nth-child(3) {
  width: 13%;
}

.radioactivity-table th:nth-child(4) {
  width: 22%;
}

.radioactivity-table th:nth-child(5) {
  width: 25%;
}

.radioactivity-table tr > :last-child {
  border-right: 0;
}

.radioactivity-table tbody tr:last-child > * {
  border-bottom: 0;
}

.radioactivity-table tbody th {
  text-align: left;
}

.radioactivity-table thead th {
  font-weight: 700;
}

.validation {
  background: #ffffff;
}

.validation-board {
  display: grid;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #ffffff;
  box-shadow: 0 18px 50px rgba(19, 32, 47, 0.08);
  overflow: hidden;
}

.validation-row {
  display: grid;
  grid-template-columns: minmax(180px, 0.68fr) minmax(240px, 0.82fr) minmax(0, 1.2fr);
  gap: 22px;
  align-items: center;
  padding: 22px clamp(18px, 3vw, 32px);
  border-bottom: 1px solid var(--line);
}

.validation-row:last-child {
  border-bottom: 0;
}

.validation-head {
  padding-top: 16px;
  padding-bottom: 16px;
  color: #ffffff;
  background: linear-gradient(140deg, var(--blue-dark), #157875);
}

.validation-row span,
.leader-panel span,
.patent-card span,
.leadership-points span {
  display: block;
  color: var(--teal);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.validation-head span {
  color: rgba(255, 255, 255, 0.82);
}

.validation-row strong {
  display: block;
  color: var(--ink);
  font-size: clamp(21px, 2.4vw, 32px);
  line-height: 1.15;
}

.validation-row p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.55;
}

.capability {
  display: grid;
  grid-template-columns: minmax(320px, 0.92fr) minmax(0, 1.08fr);
  gap: 52px;
  align-items: center;
  background: var(--soft);
}

.capability-visual {
  position: relative;
  display: grid;
  min-height: 380px;
  place-items: center;
  border-radius: 16px;
  background: #dceaf2;
  box-shadow: 0 22px 62px rgba(19, 32, 47, 0.12);
  overflow: hidden;
}

.capability-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: inherit;
  background:
    linear-gradient(180deg, rgba(245, 248, 251, 0.06), rgba(245, 248, 251, 0.28)),
    radial-gradient(circle at 12% 8%, rgba(255, 255, 255, 0.52), transparent 32%);
  pointer-events: none;
}

.capability-visual img {
  width: 100%;
  height: 100%;
  min-height: 380px;
  object-fit: cover;
}

.capability-copy h2,
.inquiry h2 {
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.08;
  letter-spacing: 0;
}

.capability-copy p,
.inquiry p {
  color: var(--muted);
  line-height: 1.75;
}

.capability-list {
  display: grid;
  gap: 14px;
  margin-top: 28px;
}

.capability-list div {
  padding: 18px;
  border-left: 4px solid var(--teal);
  background: #ffffff;
}

.capability-list strong,
.capability-list span {
  display: block;
}

.capability-list span {
  margin-top: 5px;
  color: var(--muted);
  line-height: 1.55;
}

.leadership {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.52fr);
  gap: 44px;
  align-items: stretch;
  background:
    linear-gradient(120deg, rgba(21, 90, 200, 0.07), rgba(32, 166, 161, 0.08)),
    #ffffff;
}

.leadership-copy h2 {
  max-width: 880px;
  margin-bottom: 18px;
  font-size: clamp(34px, 4.4vw, 64px);
  line-height: 1.02;
  letter-spacing: 0;
}

.leadership-copy p {
  max-width: 900px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.75;
}

.leadership-points {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 30px;
}

.leadership-points article {
  min-height: 190px;
  padding: 20px;
  border: 1px solid rgba(219, 227, 237, 0.9);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.78);
}

.leadership-points strong {
  display: block;
  margin: 12px 0 10px;
  font-size: 20px;
  line-height: 1.2;
}

.leadership-points p {
  margin-bottom: 0;
  font-size: 15px;
  line-height: 1.6;
}

.leader-panel {
  align-self: stretch;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 300px;
  padding: 30px;
  color: #ffffff;
  border-radius: 8px;
  background:
    linear-gradient(160deg, rgba(217, 35, 47, 0.92), rgba(21, 90, 200, 0.9)),
    var(--blue);
  box-shadow: var(--shadow);
}

.patents {
  background: #ffffff;
}

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

.patent-card {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(21, 90, 200, 0.05), rgba(32, 166, 161, 0.05)),
    #ffffff;
  box-shadow: 0 16px 42px rgba(19, 32, 47, 0.07);
}

.patent-card strong {
  display: block;
  margin: 12px 0;
  font-size: clamp(24px, 2.6vw, 36px);
  line-height: 1.12;
}

.patent-card p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.7;
}

.leader-panel span {
  color: rgba(255, 255, 255, 0.76);
}

.leader-panel strong {
  margin-bottom: 12px;
  font-size: clamp(27px, 3vw, 42px);
  line-height: 1.05;
}

.leader-panel p {
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.65;
}

.inquiry {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(360px, 0.9fr);
  gap: 54px;
  align-items: start;
  background: #ffffff;
}

.inquiry-form {
  display: grid;
  gap: 14px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 18px 50px rgba(19, 32, 47, 0.09);
}

.inquiry-form label {
  display: grid;
  gap: 7px;
  color: #344255;
  font-size: 13px;
  font-weight: 700;
}

.inquiry-form input,
.inquiry-form select,
.inquiry-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 13px 14px;
  color: var(--ink);
  background: #ffffff;
  outline: none;
}

.inquiry-form input:focus,
.inquiry-form select:focus,
.inquiry-form textarea:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(21, 90, 200, 0.12);
}

.form-status {
  min-height: 22px;
  margin: 0;
  color: var(--blue-dark);
  font-size: 14px;
  font-weight: 700;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 32px clamp(20px, 5vw, 72px);
  color: rgba(255, 255, 255, 0.72);
  background: #0f1a28;
}

.site-footer div {
  display: grid;
  gap: 6px;
}

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

@media (max-width: 1100px) {
  .site-header {
    grid-template-columns: 1fr auto auto;
  }

  .desktop-nav,
  .header-action {
    display: none;
  }

  .language-control {
    justify-self: end;
    min-width: 104px;
  }

  .menu-button {
    display: block;
  }

  .desktop-nav.is-open {
    position: absolute;
    top: 82px;
    left: 0;
    right: 0;
    display: grid;
    gap: 0;
    padding: 10px 20px 18px;
    background: #ffffff;
    border-bottom: 1px solid var(--line);
  }

  .desktop-nav.is-open a {
    padding: 14px 0;
  }

  .hero,
  .capability,
  .leadership,
  .inquiry {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: 0;
    padding-top: 44px;
  }

  .hero-media,
  .hero-media img {
    height: 420px;
    min-height: 420px;
  }

  .section-heading,
  .application-panel {
    grid-template-columns: 1fr;
  }

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

  .validation-row,
  .patent-list,
  .leadership-points {
    grid-template-columns: 1fr;
  }

  .performance-grid,
  .data-card,
  .data-card.compact {
    grid-template-columns: 1fr;
  }

  .data-card.compact {
    grid-column: auto;
  }
}

@media (max-width: 560px) {
  .brand-logo {
    width: 112px;
  }

  .site-header {
    grid-template-columns: 1fr auto auto;
    gap: 10px;
    min-height: 74px;
  }

  .language-control {
    min-width: 92px;
  }

  .language-control span {
    display: none;
  }

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

  .proof-strip div {
    padding: 13px 0;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .proof-strip div:first-child {
    padding-top: 0;
  }

  .proof-strip div:last-child {
    padding-bottom: 0;
    border-bottom: 0;
  }

  .hero-media,
  .hero-media img {
    height: 360px;
    min-height: 360px;
  }

  .hero-media-overlay {
    left: 16px;
    right: 16px;
    bottom: 16px;
    width: auto;
  }

  .site-footer {
    display: grid;
  }
}