.premium-site {
  --bg: #f7f9fc;
  --surface: #ffffff;
  --surface-soft: #eef3f8;
  --ink: #061120;
  --muted: #657286;
  --line: #e4eaf2;
  --gold: #f5a400;
  --gold-2: #ffd36d;
  --navy: #071629;
  --blue: #0d2a42;
  --shadow: 0 24px 70px rgba(7, 22, 41, 0.12);
  min-height: 100vh;
  background: linear-gradient(180deg, #fbfcff 0%, #eef3f8 55%, #f8fafc 100%);
  color: var(--ink);
}

:root[data-theme="dark"] .premium-site {
  --bg: #020b13;
  --surface: #061522;
  --surface-soft: #0a1d2b;
  --ink: #ffffff;
  --muted: #c1cad6;
  --line: rgba(245, 164, 0, 0.28);
  --navy: #020b13;
  --blue: #0d2a42;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.34);
  background: linear-gradient(180deg, #020b13 0%, #051522 58%, #020b13 100%);
}

.premium-site h1,
.premium-site h2,
.premium-site h3,
.premium-site p {
  letter-spacing: 0;
}

.premium-shell,
.premium-footer,
.premium-header {
  width: min(100% - 44px, 1200px);
  margin-inline: auto;
}

.premium-header {
  grid-template-columns: 170px minmax(420px, 1fr) auto;
  gap: 24px;
  padding: 18px 0;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
}

.premium-header .brand img {
  width: 146px;
}

.premium-nav {
  justify-content: center;
  gap: 5px;
  padding: 7px;
  border: 1px solid rgba(7, 22, 41, 0.08);
  border-radius: 999px;
  background: color-mix(in srgb, var(--surface) 78%, transparent);
  backdrop-filter: blur(18px);
}

:root[data-theme="dark"] .premium-nav {
  border-color: var(--line);
  background: color-mix(in srgb, var(--surface) 84%, transparent);
}

.premium-nav a {
  padding: 9px 15px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
  transition: background 160ms ease, color 160ms ease;
}

.premium-nav a::after {
  display: none;
}

.premium-nav a.active,
.premium-nav a:hover {
  background: var(--ink);
  color: var(--surface);
}

:root[data-theme="dark"] .premium-nav a.active,
:root[data-theme="dark"] .premium-nav a:hover {
  background: var(--gold);
  color: #061120;
}

.premium-header-actions {
  gap: 10px;
}

.premium-header .theme-toggle {
  width: 44px;
  height: 44px;
  background: var(--surface);
}

.premium-header .btn {
  min-height: 46px;
  padding-inline: 19px;
}

.premium-site .btn {
  border-radius: 8px;
}

.premium-site .btn-primary {
  background: linear-gradient(180deg, var(--gold-2), var(--gold));
  color: #061120;
  box-shadow: 0 18px 36px rgba(245, 164, 0, 0.28);
}

.premium-site .btn-soft {
  border-color: rgba(245, 164, 0, 0.42);
  background: var(--surface);
  color: var(--ink);
}

.premium-hero {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(420px, 1.08fr);
  gap: 44px;
  align-items: center;
  min-height: 640px;
  padding: 24px 0 42px;
}

.premium-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  padding: 9px 12px;
  border: 1px solid rgba(245, 164, 0, 0.3);
  border-radius: 999px;
  background: color-mix(in srgb, var(--surface) 72%, transparent);
  color: var(--muted);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.premium-eyebrow span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 6px rgba(245, 164, 0, 0.16);
}

.premium-hero h1 {
  max-width: 670px;
  margin: 0;
  font-size: clamp(54px, 6.4vw, 86px);
  line-height: 0.95;
}

.premium-hero h1 strong {
  display: block;
  color: var(--gold);
}

.premium-lead {
  max-width: 540px;
  margin: 26px 0 0;
  color: var(--muted);
  font-size: 19px;
}

.premium-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.premium-trust-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  max-width: 560px;
  margin-top: 34px;
}

.premium-trust-strip article {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: color-mix(in srgb, var(--surface) 76%, transparent);
}

.premium-trust-strip strong,
.premium-trust-strip small {
  display: block;
}

.premium-trust-strip strong {
  font-size: 18px;
}

.premium-trust-strip small {
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
}

.premium-visual-stage {
  position: relative;
  min-height: 540px;
  isolation: isolate;
}

.premium-hero-device {
  position: absolute;
  inset: 0;
  border-radius: 8px;
  background: url("../assets/light-hero.webp") center / contain no-repeat;
  filter: drop-shadow(0 30px 50px rgba(7, 22, 41, 0.18));
}

:root[data-theme="dark"] .premium-hero-device {
  background-image: url("../assets/dark-hero.webp");
  filter: drop-shadow(0 30px 50px rgba(0, 0, 0, 0.38));
}

.premium-float-card {
  position: absolute;
  z-index: 2;
  border: 1px solid color-mix(in srgb, var(--surface) 70%, var(--line));
  border-radius: 8px;
  background: color-mix(in srgb, var(--surface) 86%, transparent);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.premium-float-card strong,
.premium-float-card small {
  display: block;
}

.premium-float-card small,
.premium-float-card p {
  color: var(--muted);
  font-size: 13px;
}

.premium-study-card {
  top: 34px;
  left: 8px;
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 12px;
  width: 232px;
  padding: 14px;
}

.premium-study-card > span {
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: color-mix(in srgb, var(--gold) 15%, var(--surface));
  color: var(--gold);
  font-weight: 900;
}

.premium-install-card {
  right: 14px;
  bottom: 64px;
  width: 260px;
  padding: 18px;
}

.premium-install-card strong {
  color: var(--gold);
}

.premium-install-card p {
  margin: 8px 0 0;
}

.premium-support-card {
  left: 54px;
  bottom: 8px;
  width: 260px;
  padding: 18px;
}

.premium-section {
  padding-top: 58px;
  scroll-margin-top: 100px;
}

.premium-section-head,
.premium-method-intro {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 24px;
}

.premium-section-head > p,
.premium-method-intro > p {
  max-width: 470px;
  margin: 0;
  color: var(--muted);
}

.premium-kicker {
  margin: 0 0 8px;
  color: var(--gold);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.premium-site .premium-section h2,
.premium-methodology h2,
.premium-final-cta h2 {
  margin: 0;
  font-size: clamp(32px, 4vw, 48px);
  line-height: 1.05;
}

.premium-product-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.premium-product-card {
  display: grid;
  grid-template-rows: auto 1fr;
  min-width: 0;
  min-height: 500px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 14px 38px rgba(7, 22, 41, 0.06);
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.premium-product-card:hover {
  transform: translateY(-4px);
  border-color: rgba(230, 155, 0, 0.42);
  box-shadow: 0 20px 46px rgba(7, 22, 41, 0.1);
}

.premium-product-media {
  position: relative;
  aspect-ratio: 1.45;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background: #f7f9fb;
}

.premium-product-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.premium-product-media > span {
  position: absolute;
  top: 14px;
  left: 14px;
  padding: 7px 9px;
  border: 1px solid rgba(7, 22, 41, 0.1);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.94);
  color: #071629;
  font-size: 10px;
  font-weight: 900;
  line-height: 1;
  box-shadow: 0 6px 18px rgba(7, 22, 41, 0.08);
}

.premium-product-content {
  display: grid;
  align-content: start;
  gap: 9px;
  padding: 20px;
}

.premium-product-content > b {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border-radius: 8px;
  background: color-mix(in srgb, var(--gold) 15%, var(--surface));
  color: var(--gold);
}

.premium-product-content > small {
  margin-top: 2px;
  color: var(--gold);
  font-size: 10px;
  font-weight: 900;
  text-transform: uppercase;
}

.premium-product-content h3,
.premium-product-content p {
  margin: 0;
}

.premium-product-content h3 {
  font-size: 18px;
}

.premium-product-content p {
  color: var(--muted);
  font-size: 14px;
}

.premium-product-links {
  display: grid;
  gap: 6px;
  margin-top: 7px;
}

.premium-product-links a {
  width: fit-content;
  color: var(--gold);
  font-size: 12px;
  font-weight: 900;
}

.premium-product-links a:last-child {
  color: var(--ink);
}

.premium-product-links a:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.premium-equipment-note {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 12px;
  text-align: center;
}

.premium-expertise-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
}

.premium-expertise-grid > * {
  min-width: 0;
  min-height: 176px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: color-mix(in srgb, var(--surface) 84%, transparent);
  box-shadow: 0 12px 28px rgba(7, 22, 41, 0.05);
}

.premium-expertise-grid a {
  transition: transform 160ms ease, border-color 160ms ease;
}

.premium-expertise-grid a:hover {
  transform: translateY(-3px);
  border-color: rgba(245, 164, 0, 0.46);
}

.premium-expertise-grid span {
  display: grid;
  width: 40px;
  height: 40px;
  place-items: center;
  margin-bottom: 18px;
  border: 1px solid rgba(245, 164, 0, 0.35);
  border-radius: 8px;
  background: color-mix(in srgb, var(--gold) 13%, var(--surface));
  color: var(--gold);
  font-size: 12px;
  font-weight: 900;
}

.premium-expertise-grid h3,
.premium-expertise-grid p {
  margin: 0;
}

.premium-expertise-grid h3 {
  font-size: 15px;
}

.premium-expertise-grid p {
  margin-top: 8px;
  color: var(--muted);
  font-size: 13px;
}

.premium-methodology {
  margin-top: 60px;
  padding: clamp(28px, 4vw, 44px);
  border-radius: 8px;
  background: linear-gradient(145deg, #061120, #0d2a42);
  color: #ffffff;
  scroll-margin-top: 100px;
}

.premium-method-intro > p {
  color: #cbd5e1;
}

.premium-method-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 32px;
}

.premium-method-grid article {
  min-height: 150px;
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
}

.premium-method-grid span {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  margin-bottom: 18px;
  border-radius: 8px;
  background: rgba(245, 164, 0, 0.18);
  color: var(--gold);
  font-weight: 900;
}

.premium-method-grid strong {
  display: block;
  font-size: 14px;
}

.premium-method-grid p {
  margin: 8px 0 0;
  color: #aebed0;
  font-size: 12px;
}

.premium-sector-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
}

.premium-sector-grid article {
  display: grid;
  min-width: 0;
  min-height: 104px;
  place-items: center;
  align-content: center;
  gap: 8px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: color-mix(in srgb, var(--surface) 78%, transparent);
  text-align: center;
}

.premium-sector-grid span {
  color: var(--gold);
  font-size: 13px;
  font-weight: 900;
}

.premium-sector-grid strong {
  font-size: 13px;
}

.premium-final-cta {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: center;
  margin: 64px 0 42px;
  padding: 28px;
  border-radius: 8px;
  background: linear-gradient(135deg, #071629, #08111f);
  color: #ffffff;
}

.premium-final-cta p:not(.premium-kicker) {
  max-width: 640px;
  margin: 8px 0 0;
  color: #cbd5e1;
}

.premium-final-cta p a {
  color: #ffffff;
  font-weight: 800;
}

.premium-footer {
  padding: 34px 0 24px;
  border-top: 1px solid var(--line);
}

.premium-footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.7fr 1fr;
  gap: 52px;
}

.premium-footer-brand img {
  width: 146px;
}

.premium-footer h2 {
  margin: 0 0 12px;
  font-size: 13px;
  text-transform: uppercase;
}

.premium-footer p,
.premium-footer a,
.premium-footer small {
  color: var(--muted);
  font-size: 13px;
}

.premium-footer p {
  max-width: 390px;
  margin: 12px 0 0;
}

.premium-footer-grid > div:not(:first-child) {
  display: grid;
  align-content: start;
  gap: 7px;
}

.premium-footer a:hover {
  color: var(--gold);
}

.premium-footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  margin-top: 28px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.premium-footer-bottom a {
  color: var(--ink);
  font-weight: 900;
}

/* Public inner pages share the same premium system. */
.premium-inner .service-hero-detail,
.premium-inner .service-detail-content,
.premium-inner .service-final-cta,
.premium-inner .request-shell {
  width: min(100% - 44px, 1200px);
}

.premium-inner .service-hero-detail {
  min-height: 590px;
  padding: 48px 0 64px;
}

.premium-inner .service-hero-detail h1,
.premium-inner .request-intro h1 {
  color: var(--ink);
  font-size: clamp(48px, 6vw, 78px);
  line-height: 0.98;
}

.premium-inner .section-kicker {
  width: fit-content;
  padding: 0;
  color: var(--gold);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.premium-inner .service-detail-visual,
.premium-inner .request-form-panel,
.premium-inner .service-copy-panel {
  border-radius: 8px;
  background: var(--surface);
}

.premium-inner .service-detail-visual {
  box-shadow: var(--shadow);
}

.premium-inner .service-copy-panel {
  box-shadow: 0 12px 30px rgba(7, 22, 41, 0.05);
}

.premium-inner .service-final-cta {
  border-radius: 8px;
  background: linear-gradient(145deg, #061120, #0d2a42);
}

.premium-inner .request-shell {
  margin-top: 34px;
  gap: 56px;
}

.premium-inner .request-intro {
  top: 112px;
}

.premium-inner .request-highlights article {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: color-mix(in srgb, var(--surface) 82%, transparent);
}

.premium-inner .request-highlights span {
  border-radius: 8px;
  background: color-mix(in srgb, var(--gold) 14%, var(--surface));
}

.premium-inner .request-form-panel {
  box-shadow: var(--shadow);
}

.premium-inner .premium-request-form input,
.premium-inner .premium-request-form select,
.premium-inner .premium-request-form textarea {
  border-radius: 8px;
  background: var(--bg);
}

@media (max-width: 1100px) {
  .premium-header {
    grid-template-columns: 150px minmax(360px, 1fr) auto;
    gap: 14px;
  }

  .premium-nav a {
    padding-inline: 11px;
  }

  .premium-header .btn {
    padding-inline: 15px;
  }

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

@media (max-width: 980px) {
  .premium-header,
  .premium-hero,
  .premium-final-cta {
    grid-template-columns: 1fr;
  }

  .premium-header {
    grid-template-columns: 150px 1fr auto;
  }

  .premium-header .menu-toggle {
    display: grid;
    justify-self: end;
  }

  .premium-nav {
    display: none;
    grid-column: 1 / -1;
    justify-content: flex-start;
    border-radius: 8px;
  }

  .premium-header.menu-open .premium-nav {
    display: flex;
  }

  .premium-header-actions {
    grid-column: 1 / -1;
    justify-content: flex-end;
  }

  .premium-hero {
    padding-top: 52px;
  }

  .premium-visual-stage {
    min-height: 480px;
  }

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

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

  .premium-method-intro {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 700px) {
  .premium-shell,
  .premium-footer,
  .premium-header,
  .premium-inner .service-hero-detail,
  .premium-inner .service-detail-content,
  .premium-inner .service-final-cta,
  .premium-inner .request-shell {
    width: min(100% - 28px, 1200px);
  }

  .premium-header {
    grid-template-columns: 1fr auto;
    gap: 12px;
  }

  .premium-header .brand img {
    width: 128px;
  }

  .premium-header .menu-toggle {
    grid-column: 2;
    grid-row: 1;
  }

  .premium-nav {
    grid-column: 1 / -1;
    padding: 10px;
  }

  .premium-header.menu-open .premium-nav {
    flex-direction: column;
    align-items: stretch;
  }

  .premium-nav a {
    padding: 13px 14px;
    text-align: left;
  }

  .premium-header-actions {
    grid-column: 1 / -1;
    justify-content: stretch;
  }

  .premium-header-actions .btn {
    flex: 1;
    min-width: 0;
  }

  .premium-hero {
    min-height: auto;
    padding: 38px 0 30px;
  }

  .premium-hero h1 {
    font-size: 48px;
  }

  .premium-lead {
    font-size: 17px;
  }

  .premium-trust-strip,
  .premium-product-grid,
  .premium-expertise-grid,
  .premium-method-grid,
  .premium-sector-grid,
  .premium-footer-grid {
    grid-template-columns: 1fr;
  }

  .premium-visual-stage {
    display: grid;
    min-height: auto;
  }

  .premium-hero-device {
    position: relative;
    min-height: 310px;
  }

  .premium-float-card {
    position: static;
    width: auto;
    margin-top: 12px;
  }

  .premium-section-head,
  .premium-method-intro {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .premium-section-head > p,
  .premium-method-intro > p {
    max-width: none;
  }

  .premium-product-card {
    min-height: 0;
  }

  .premium-expertise-grid > * {
    min-height: 0;
  }

  .premium-methodology {
    margin-top: 46px;
  }

  .premium-final-cta {
    align-items: stretch;
  }

  .premium-footer-grid {
    gap: 28px;
  }

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

  .premium-inner .service-hero-detail,
  .premium-inner .request-shell {
    grid-template-columns: 1fr;
  }

  .premium-inner .request-intro {
    position: static;
  }

  .premium-inner .service-detail-content {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 420px) {
  .premium-hero h1 {
    font-size: 42px;
  }

  .premium-hero-actions {
    display: grid;
  }

  .premium-site .btn {
    width: 100%;
    white-space: normal;
    text-align: center;
  }
}