:root {
  --bg: #e9eff3;
  --ink: #13232f;
  --muted: #60717a;
  --line: rgba(19, 35, 47, 0.1);
  --panel: rgba(255, 255, 255, 0.72);
  --panel-strong: #ffffff;
  --accent: #0a7f88;
  --accent-deep: #093a56;
  --accent-soft: #d8f0ee;
  --gold: #b88630;
  --shadow: 0 24px 60px rgba(13, 35, 49, 0.12);
  --shadow-strong: 0 26px 80px rgba(9, 58, 86, 0.18);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: hidden;
  font-family: "Outfit", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 0% 0%, rgba(10, 127, 136, 0.22), transparent 30%),
    radial-gradient(circle at 100% 10%, rgba(184, 134, 48, 0.14), transparent 24%),
    linear-gradient(180deg, #f7fbfc 0%, var(--bg) 56%, #dde8ee 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.18) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.18) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.4), transparent 85%);
}

.utility-bar {
  position: relative;
  z-index: 2;
  color: white;
  background: var(--accent-deep);
}

.utility-bar-inner {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 26px;
  padding: 9px 0;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.utility-bar-inner span + span,
.utility-bar-inner a {
  position: relative;
}

.utility-bar-inner span + span::before,
.utility-bar-inner a::before {
  content: "";
  position: absolute;
  top: 50%;
  left: -14px;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.55);
}

.utility-bar a {
  color: white;
  text-decoration: none;
}

.page-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 24px 0 56px;
}

.site-header,
.hero,
.product-grid,
.trust-section,
.split-section,
.applications,
.knowledge-section,
.faq-section,
.cta-band {
  position: relative;
  z-index: 1;
}

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 22px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow);
}

.brand {
  display: flex;
  gap: 16px;
  align-items: center;
  min-width: 0;
}

.brand > div {
  min-width: 0;
}

.brand-logo-frame {
  display: block;
  flex: 0 0 auto;
  width: 72px;
  height: 58px;
  overflow: hidden;
  border-radius: 18px;
  background: #eef7fb;
  box-shadow: inset 0 0 0 1px rgba(9, 58, 86, 0.08);
}

.brand-logo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 42%;
  transform: scale(1.75);
}

.brand-kicker,
.eyebrow,
.card-label {
  margin: 0 0 6px;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.72rem;
  color: var(--accent-deep);
}

.brand h1,
.hero h2,
.section-head h2,
.split-section h2,
.cta-band h2 {
  margin: 0;
  font-family: "Noto Serif SC", serif;
  line-height: 1.15;
}

.top-nav {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.top-nav a {
  color: var(--ink);
  text-decoration: none;
  font-size: 0.95rem;
  position: relative;
}

.top-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s ease;
}

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

.hero {
  display: grid;
  grid-template-columns: 1.3fr 0.9fr;
  gap: 28px;
  padding: 56px 0 34px;
}

.hero-copy {
  padding: 18px 4px;
}

.hero h2 {
  font-size: clamp(2.4rem, 5vw, 4.8rem);
  max-width: 11ch;
}

.hero-text,
.section-head p,
.split-section p,
.application-cards p,
.cta-notes p,
.product-card p,
.glass-card p {
  color: var(--muted);
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin: 28px 0 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 138px;
  padding: 14px 20px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

.button.primary {
  color: white;
  background: linear-gradient(135deg, var(--accent), var(--accent-deep));
  box-shadow: 0 16px 32px rgba(11, 79, 103, 0.22);
}

.button.secondary {
  color: var(--ink);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.82);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.hero-stats li,
.product-card,
.trust-cards article,
.application-cards article {
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow);
}

.hero-stats li {
  padding: 18px;
}

.hero-stats strong,
.product-card h3,
.trust-cards h3,
.application-cards h3,
.advantage-list h3,
.glass-card h3 {
  display: block;
  margin-bottom: 8px;
}

.hero-stats span {
  display: block;
  color: var(--muted);
  line-height: 1.65;
}

.hero-panel {
  display: flex;
  align-items: stretch;
}

.glass-card {
  align-self: center;
  width: 100%;
  padding: 28px;
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: 32px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.86), rgba(223, 244, 244, 0.7)),
    linear-gradient(135deg, rgba(13, 124, 134, 0.16), rgba(199, 149, 62, 0.1));
  box-shadow: var(--shadow-strong);
}

.badge-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.badge-list span,
.product-meta span {
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-deep);
  font-size: 0.92rem;
}

.section-head {
  padding-top: 34px;
  margin-bottom: 18px;
}

.section-head h2,
.split-section h2,
.cta-band h2 {
  font-size: clamp(1.8rem, 3vw, 3rem);
}

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

.product-card {
  overflow: hidden;
  position: relative;
  transition: transform 0.24s ease, box-shadow 0.24s ease, border-color 0.24s ease;
}

.product-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-strong);
  border-color: rgba(10, 127, 136, 0.22);
}

.product-image {
  min-height: 180px;
  padding: 20px;
  background:
    linear-gradient(135deg, rgba(10, 127, 136, 0.22), rgba(9, 58, 86, 0.42)),
    linear-gradient(180deg, rgba(255, 255, 255, 0.5), rgba(255, 255, 255, 0.08));
}

.product-tube {
  width: 100%;
  height: 160px;
  border-radius: 28px;
  background:
    radial-gradient(circle at 30% 20%, rgba(255, 255, 255, 0.92), transparent 22%),
    linear-gradient(135deg, #f4fdff, #88cfd4 50%, #0b4f67);
  box-shadow: inset -20px -18px 40px rgba(255, 255, 255, 0.14);
}

.product-photo {
  display: block;
  width: 100%;
  height: 250px;
  object-fit: contain;
  border-radius: 22px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(237, 246, 248, 0.75));
}

.placeholder-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 20px;
  color: white;
  text-align: center;
}

.placeholder-state span {
  font-size: 1.2rem;
  font-weight: 700;
}

.placeholder-state small {
  max-width: 22ch;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.82);
}

.product-body {
  padding: 22px;
}

.product-code {
  color: var(--gold);
  font-weight: 700;
  letter-spacing: 0.08em;
  margin: 0 0 8px;
}

.product-body h3 {
  min-height: 3.25em;
}

.product-facts,
.product-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.product-facts {
  margin-top: 18px;
}

.product-facts span {
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(9, 58, 86, 0.08);
  color: var(--accent-deep);
  font-size: 0.84rem;
  font-weight: 600;
}

.product-meta {
  margin-top: 18px;
}

.product-footer {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 14px;
  margin-top: 24px;
}

.price-box {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 10px 14px;
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(216, 240, 238, 0.7), rgba(255, 255, 255, 0.92));
}

.price-label {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.price-value {
  margin: 0;
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--accent-deep);
}

.buy-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 18px;
  border-radius: 999px;
  text-decoration: none;
  color: white;
  background: linear-gradient(135deg, var(--accent), var(--accent-deep));
  white-space: nowrap;
  box-shadow: 0 14px 28px rgba(9, 58, 86, 0.2);
}

.split-section {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 24px;
  margin-top: 42px;
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: 32px;
  background: rgba(255, 255, 255, 0.7);
  box-shadow: var(--shadow);
}

.trust-section {
  margin-top: 46px;
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: 32px;
  background: rgba(255, 255, 255, 0.48);
  box-shadow: var(--shadow);
}

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

.trust-cards article {
  padding: 24px;
}

.trust-cards span {
  display: inline-flex;
  margin-bottom: 14px;
  color: var(--accent);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.18em;
}

.trust-cards p {
  color: var(--muted);
  line-height: 1.75;
}

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

.advantage-list article {
  padding: 18px 18px 8px;
  border-left: 2px solid rgba(13, 124, 134, 0.22);
}

.applications {
  margin-top: 46px;
}

.section-head.compact {
  padding-top: 0;
}

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

.application-cards article {
  padding: 22px;
}

.application-cards span {
  display: inline-flex;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  background: var(--accent-soft);
  color: var(--accent-deep);
  font-weight: 700;
}

.knowledge-section,
.faq-section {
  margin-top: 54px;
}

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

.knowledge-cards article {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.78);
  box-shadow: var(--shadow);
}

.knowledge-cards h3 {
  margin: 8px 0 12px;
  font-size: 1.35rem;
}

.knowledge-cards p {
  color: var(--muted);
  line-height: 1.7;
}

.knowledge-cards .article-type {
  margin: 0;
  color: var(--accent);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.knowledge-cards a {
  display: inline-flex;
  margin-top: 8px;
  color: var(--accent-deep);
  font-weight: 700;
  text-decoration: none;
}

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

.faq-list details {
  padding: 0 22px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.78);
  box-shadow: 0 12px 32px rgba(13, 35, 49, 0.07);
}

.faq-list summary {
  cursor: pointer;
  padding: 20px 36px 20px 0;
  color: var(--ink);
  font-size: 1.05rem;
  font-weight: 700;
}

.faq-list details p {
  margin: 0;
  padding: 0 0 20px;
  color: var(--muted);
  line-height: 1.7;
}

.cta-band {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 20px;
  margin-top: 46px;
  padding: 30px;
  border-radius: 30px;
  background:
    linear-gradient(135deg, rgba(11, 79, 103, 0.94), rgba(13, 124, 134, 0.94)),
    linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
  color: white;
  box-shadow: 0 22px 48px rgba(11, 79, 103, 0.24);
}

.cta-band .eyebrow,
.cta-band p,
.cta-band h2 {
  color: white;
}

.cta-band .button.primary {
  background: white;
  color: var(--accent-deep);
}

.site-footer {
  position: relative;
  z-index: 1;
  margin-top: 18px;
  padding: 46px max(16px, calc((100% - 1180px) / 2)) 24px;
  color: rgba(255, 255, 255, 0.78);
  background:
    radial-gradient(circle at 12% 0%, rgba(10, 127, 136, 0.26), transparent 30%),
    #092d40;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.7fr 1fr 0.8fr 0.9fr;
  gap: 34px;
}

.footer-brand {
  display: flex;
  gap: 16px;
}

.footer-brand img {
  width: 76px;
  height: 62px;
  border-radius: 16px;
  object-fit: cover;
}

.site-footer h2,
.site-footer h3 {
  margin: 0 0 12px;
  color: white;
}

.site-footer h2 {
  font-size: 1.3rem;
}

.site-footer p,
.site-footer address {
  margin: 0 0 12px;
  font-style: normal;
  line-height: 1.65;
}

.site-footer a {
  display: block;
  width: fit-content;
  margin: 0 0 9px;
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
}

.site-footer a:hover {
  color: white;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-top: 34px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.56);
  font-size: 0.82rem;
}

.inner-page .page-shell {
  padding-bottom: 32px;
}

.inner-page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 18px 22px;
  border: 1px solid var(--line);
  border-radius: 26px;
  background: rgba(255, 255, 255, 0.78);
  box-shadow: var(--shadow);
}

.inner-page-header .brand {
  color: var(--ink);
  text-decoration: none;
}

.inner-page-header nav {
  display: flex;
  gap: 16px;
}

.inner-page-header nav a {
  color: var(--ink);
  text-decoration: none;
  font-weight: 600;
}

.document-hero {
  padding: 64px 0 28px;
  max-width: 760px;
}

.document-hero h1 {
  margin: 0;
  font-family: "Noto Serif SC", serif;
  font-size: clamp(2.4rem, 6vw, 4.6rem);
  line-height: 1.08;
}

.document-hero p {
  color: var(--muted);
  line-height: 1.75;
}

.document-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 28px;
  align-items: start;
}

.document-nav,
.document-content,
.article-content {
  border: 1px solid var(--line);
  border-radius: 26px;
  background: rgba(255, 255, 255, 0.78);
  box-shadow: var(--shadow);
}

.document-nav {
  position: sticky;
  top: 20px;
  padding: 18px;
}

.document-nav strong {
  display: block;
  margin-bottom: 12px;
}

.document-nav a {
  display: block;
  margin: 9px 0;
  color: var(--muted);
  text-decoration: none;
}

.document-content,
.article-content {
  padding: clamp(24px, 5vw, 48px);
}

.document-content h2,
.article-content h2 {
  margin: 32px 0 10px;
  color: var(--accent-deep);
}

.document-content h2:first-child,
.article-content h2:first-child {
  margin-top: 0;
}

.document-content p,
.document-content li,
.article-content p,
.article-content li {
  color: var(--muted);
  line-height: 1.8;
}

.article-content + .article-content {
  margin-top: 22px;
}

.article-note {
  padding: 18px;
  border-left: 3px solid var(--accent);
  border-radius: 0 16px 16px 0;
  background: var(--accent-soft);
}

.floating-call {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 12;
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 14px 18px;
  border-radius: 18px;
  text-decoration: none;
  color: white;
  background: linear-gradient(135deg, #0b8b89, #093a56);
  box-shadow: var(--shadow-strong);
}

.floating-call span {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.82);
}

.floating-call strong {
  font-size: 1rem;
}

@media (max-width: 960px) {
  .site-header,
  .inner-page-header,
  .hero,
  .split-section,
  .cta-band {
    grid-template-columns: 1fr;
    display: grid;
  }

  .site-header {
    gap: 18px;
  }

  .product-grid,
  .application-cards,
  .knowledge-cards,
  .trust-cards,
  .advantage-list,
  .hero-stats {
    grid-template-columns: 1fr;
  }

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

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

  .document-nav {
    position: static;
  }
}

@media (max-width: 680px) {
  .utility-bar-inner {
    width: calc(100% - 20px);
    justify-content: flex-start;
    gap: 0;
    overflow-x: auto;
    white-space: nowrap;
    scrollbar-width: none;
  }

  .utility-bar-inner span,
  .utility-bar-inner a {
    padding-right: 22px;
  }

  .utility-bar-inner span + span::before,
  .utility-bar-inner a::before {
    left: -12px;
  }

  .page-shell {
    width: calc(100% - 20px);
    max-width: 1180px;
    overflow: hidden;
  }

  .site-header {
    width: 100%;
    max-width: 100%;
    min-width: 0;
    overflow: hidden;
    padding: 18px;
    border-radius: 22px;
  }

  .brand {
    width: 100%;
    max-width: 100%;
    gap: 12px;
    align-items: flex-start;
  }

  .brand > div {
    flex: 1;
    max-width: calc(100% - 70px);
  }

  .brand-logo-frame {
    width: 58px;
    height: 50px;
    border-radius: 14px;
  }

  .brand h1 {
    width: 100%;
    max-width: 100%;
    font-size: 1.3rem;
    white-space: normal;
    overflow-wrap: anywhere;
  }

  .hero {
    display: block;
    width: 100%;
    max-width: 100%;
    padding-top: 30px;
    min-width: 0;
  }

  .hero-copy,
  .hero-panel,
  .glass-card {
    width: 100%;
    max-width: 100%;
    min-width: 0;
  }

  .hero h2 {
    width: 100%;
    max-width: none;
    font-size: clamp(2.2rem, 11vw, 3.35rem);
    line-height: 1.04;
    overflow-wrap: anywhere;
  }

  .top-nav {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    width: 100%;
    max-width: 100%;
    gap: 10px 12px;
    min-width: 0;
  }

  .top-nav a {
    font-size: 0.88rem;
    text-align: center;
  }

  .button {
    width: 100%;
  }

  .split-section,
  .trust-section,
  .cta-band {
    padding: 22px;
  }

  .footer-inner {
    grid-template-columns: 1fr;
  }

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

  .product-footer {
    flex-direction: column;
    align-items: stretch;
  }

  .buy-link {
    width: 100%;
  }

  .floating-call {
    right: 14px;
    bottom: 14px;
    left: auto;
    max-width: 230px;
    padding: 12px 14px;
    align-items: flex-start;
  }

  .floating-call span {
    font-size: 0.64rem;
  }
}