:root {
  --bg: #f8fafc;
  --surface: #ffffff;
  --surface-soft: #f1f5f9;
  --navy: #071426;
  --navy-mid: #0e223d;
  --ink: #0f172a;
  --ink-muted: #475569;
  --ink-subtle: #64748b;
  --border: rgba(15, 23, 42, 0.09);
  --border-strong: rgba(15, 23, 42, 0.16);
  --sky: #0284c7;
  --teal: #0d9488;
  --cobalt: #2563eb;
  --indigo: #4f46e5;
  --purple: #7c3aed;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 22px;
  --shadow-sm: 0 4px 16px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 12px 32px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 24px 56px rgba(7, 20, 38, 0.18);
}

*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  margin: 0;
  font-family: "PingFang SC", "Noto Sans SC", "Hiragino Sans GB", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

.container {
  width: min(1220px, calc(100% - 36px));
  margin: 0 auto;
}

/* Top Brand Bar + Multi-Tab Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 14px rgba(15, 23, 42, 0.04);
}

.brand-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 58px;
  border-bottom: 1px solid var(--border);
}

.brand-lockup {
  display: flex;
  align-items: center;
  gap: 11px;
  min-width: 0;
}

.brand-logo-box {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 4px 8px;
  display: flex;
  align-items: center;
  height: 36px;
}

.brand-logo-box img {
  height: 24px;
  width: auto;
  object-fit: contain;
}

.brand-name {
  display: flex;
  flex-direction: column;
  line-height: 1.22;
}

.brand-name strong {
  font-size: 0.94rem;
  font-weight: 700;
  color: var(--ink);
}

.brand-name span {
  font-size: 0.72rem;
  color: var(--ink-subtle);
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 10px;
}

.tab-strip {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  overflow-x: auto;
  padding-top: 8px;
  scrollbar-width: none;
}

.tab-strip::-webkit-scrollbar {
  display: none;
}

.tab-item {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 16px 10px;
  border-radius: 12px 12px 0 0;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ink-muted);
  white-space: nowrap;
  border: 1px solid transparent;
  border-bottom: none;
  transition: all 0.15s ease;
  position: relative;
}

.tab-item:hover {
  background: rgba(2, 132, 199, 0.06);
  color: var(--sky);
}

.tab-item.active {
  background: var(--navy);
  color: #ffffff;
  border-color: var(--navy);
  box-shadow: 0 -2px 10px rgba(7, 20, 38, 0.08);
}

.tab-num {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.72rem;
  opacity: 0.72;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 8px 15px;
  border-radius: 999px;
  font-size: 0.84rem;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--sky), var(--cobalt));
  color: #ffffff;
  box-shadow: 0 8px 18px rgba(2, 132, 199, 0.25);
}

.btn-outline {
  background: #ffffff;
  color: var(--ink);
  border-color: var(--border-strong);
}

.btn-outline:hover {
  border-color: var(--sky);
  color: var(--sky);
}

.btn-ghost-light {
  background: rgba(255, 255, 255, 0.1);
  color: #f8fafc;
  border-color: rgba(255, 255, 255, 0.24);
}

.btn-ghost-light:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* Hero / Subpage Banner */
.hero {
  background:
    radial-gradient(ellipse 80% 70% at 82% 18%, rgba(14, 165, 233, 0.22), transparent 60%),
    radial-gradient(ellipse 60% 60% at 12% 85%, rgba(13, 148, 136, 0.2), transparent 55%),
    linear-gradient(160deg, #06101f 0%, #0b1c36 52%, #0e2444 100%);
  color: #f8fafc;
  padding: 42px 0 46px;
}

.sub-hero {
  background:
    radial-gradient(ellipse 75% 75% at 88% 22%, rgba(14, 165, 233, 0.22), transparent 60%),
    linear-gradient(155deg, #071426 0%, #0e2444 100%);
  color: #f8fafc;
  padding: 36px 0 40px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  gap: 34px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 13px;
  border-radius: 999px;
  background: rgba(13, 148, 136, 0.2);
  border: 1px solid rgba(45, 212, 191, 0.35);
  color: #5eead4;
  font-size: 0.78rem;
  font-weight: 600;
  margin-bottom: 14px;
}

.hero h1,
.sub-hero h1 {
  margin: 0 0 12px;
  font-size: clamp(1.75rem, 3vw, 2.45rem);
  font-weight: 750;
  line-height: 1.2;
}

.hero-lead {
  margin: 0 0 22px;
  color: #cbd5e1;
  font-size: 0.98rem;
  max-width: 600px;
}

.hero-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
}

.hero-kpis {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

.kpi-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 13px;
  padding: 11px 13px;
}

.kpi-val {
  font-size: 1.18rem;
  font-weight: 750;
  color: #38bdf8;
  line-height: 1.2;
}

.kpi-lbl {
  font-size: 0.74rem;
  color: #94a3b8;
  margin-top: 3px;
}

/* Interactive Hero Stage */
.hero-stage {
  background: rgba(15, 23, 42, 0.65);
  border: 1px solid rgba(148, 163, 184, 0.24);
  border-radius: var(--radius-lg);
  padding: 14px;
  box-shadow: var(--shadow-lg);
}

.stage-tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-bottom: 10px;
}

.stage-tab {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: #cbd5e1;
  border-radius: 10px;
  padding: 7px 9px;
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  text-align: center;
  transition: all 0.15s ease;
}

.stage-tab.active {
  background: rgba(2, 132, 199, 0.3);
  border-color: #38bdf8;
  color: #ffffff;
}

.stage-visual {
  border-radius: 13px;
  overflow: hidden;
  background: #ffffff;
  aspect-ratio: 16 / 10;
}

.stage-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.stage-caption {
  margin-top: 10px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 11px;
}

.stage-caption h3 {
  margin: 0;
  font-size: 0.92rem;
  color: #ffffff;
}

.stage-caption p {
  margin: 2px 0 0;
  font-size: 0.78rem;
  color: #94a3b8;
}

.stage-pill {
  white-space: nowrap;
  font-size: 0.73rem;
  font-weight: 600;
  color: #38bdf8;
  background: rgba(56, 189, 248, 0.14);
  border: 1px solid rgba(56, 189, 248, 0.35);
  border-radius: 999px;
  padding: 4px 10px;
}

/* Sections & Grids */
.section {
  padding: 46px 0;
}

.section-alt {
  background: #ffffff;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.eyebrow {
  display: inline-block;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--sky);
  margin-bottom: 4px;
}

.section-head h2 {
  margin: 0;
  font-size: clamp(1.32rem, 2vw, 1.68rem);
  font-weight: 750;
  color: var(--ink);
}

.section-desc {
  margin: 0;
  max-width: 540px;
  color: var(--ink-muted);
  font-size: 0.9rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

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

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

.split-card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-md);
  display: grid;
  grid-template-columns: 1.04fr 0.96fr;
  gap: 28px;
  align-items: center;
}

.card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: transform 0.16s ease, box-shadow 0.16s ease;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.card-media {
  aspect-ratio: 16 / 10;
  background: #f8fafc;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
  position: relative;
}

.card-media.contain img {
  object-fit: contain;
  padding: 6px;
  background: #ffffff;
}

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

.zoomable {
  cursor: zoom-in;
}

.card-badge-corner {
  position: absolute;
  top: 10px;
  left: 10px;
  padding: 3px 9px;
  border-radius: 999px;
  background: rgba(7, 20, 38, 0.82);
  color: #ffffff;
  font-size: 0.72rem;
  font-weight: 600;
}

.card-body {
  padding: 16px 18px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card-kicker {
  font-size: 0.73rem;
  font-weight: 700;
  color: var(--sky);
  margin-bottom: 5px;
}

.card-body h3 {
  margin: 0 0 7px;
  font-size: 1.02rem;
  line-height: 1.35;
}

.card-body p {
  margin: 0;
  font-size: 0.86rem;
  color: var(--ink-muted);
}

.card-link-foot {
  margin-top: auto;
  padding-top: 12px;
  font-size: 0.82rem;
  font-weight: 650;
  color: var(--sky);
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

/* Info Box & Specs */
.bullet-list {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  display: grid;
  gap: 9px;
}

.bullet-list li {
  display: flex;
  gap: 9px;
  align-items: flex-start;
  font-size: 0.9rem;
}

.bullet-dot {
  flex: none;
  width: 20px;
  height: 20px;
  border-radius: 6px;
  background: rgba(13, 148, 136, 0.12);
  color: var(--teal);
  font-weight: 700;
  font-size: 0.74rem;
  display: grid;
  place-items: center;
  margin-top: 2px;
}

.spec-mini-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.spec-mini {
  background: var(--surface-soft);
  border-radius: 12px;
  padding: 10px 12px;
  border: 1px solid var(--border);
}

.spec-mini span {
  display: block;
  font-size: 0.74rem;
  color: var(--ink-subtle);
}

.spec-mini strong {
  display: block;
  font-size: 0.9rem;
  color: var(--ink);
  margin-top: 2px;
}

.highlight-callout {
  margin-top: 16px;
  background: #f0fdfa;
  border: 1px solid rgba(13, 148, 136, 0.24);
  border-radius: 12px;
  padding: 12px 15px;
  font-size: 0.85rem;
  color: #115e59;
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.tag-pill {
  padding: 5px 11px;
  border-radius: 999px;
  background: #eff6ff;
  border: 1px solid rgba(37, 99, 235, 0.18);
  color: #1e40af;
  font-size: 0.78rem;
  font-weight: 600;
}

/* SOP Steps */
.steps-5 {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}

.steps-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.step-box {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px;
}

.step-num {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 999px;
  background: var(--navy);
  color: #ffffff;
  font-size: 0.72rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.step-box h4 {
  margin: 0 0 5px;
  font-size: 0.94rem;
}

.step-box p {
  margin: 0;
  font-size: 0.82rem;
  color: var(--ink-muted);
}

/* Catalog Table (used cleanly on both subpages and catalog.html) */
.catalog-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 16px;
}

.filter-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.filter-pill {
  padding: 6px 13px;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  background: #ffffff;
  border: 1px solid var(--border-strong);
  color: var(--ink-muted);
  cursor: pointer;
}

.filter-pill.active {
  background: var(--sky);
  border-color: var(--sky);
  color: #ffffff;
}

.search-box {
  position: relative;
  min-width: 240px;
  flex: 0 1 320px;
}

.search-box input {
  width: 100%;
  padding: 8px 14px 8px 34px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: #ffffff;
  font-size: 0.86rem;
  outline: none;
}

.search-box input:focus {
  border-color: var(--sky);
  box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.12);
}

.search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--ink-subtle);
}

.catalog-wrap {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.catalog-table-scroll {
  overflow-x: auto;
}

table.catalog-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.86rem;
}

.catalog-table thead th {
  background: var(--navy);
  color: #f8fafc;
  text-align: left;
  padding: 11px 14px;
  font-size: 0.78rem;
  font-weight: 600;
  white-space: nowrap;
}

.catalog-table tbody td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

.catalog-table tbody tr:hover {
  background: #f8fafc;
}

.code-cell {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-weight: 700;
  color: var(--sky);
  font-size: 0.8rem;
}

.seq-sub {
  display: block;
  font-size: 0.72rem;
  color: var(--ink-subtle);
  font-weight: 500;
}

.prod-name {
  font-weight: 650;
  color: var(--ink);
}

.prod-series {
  display: block;
  font-size: 0.75rem;
  color: var(--ink-subtle);
  margin-top: 2px;
}

.lead-badge {
  display: inline-block;
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 0.73rem;
  font-weight: 600;
  background: #f0f9ff;
  color: #0369a1;
  border: 1px solid rgba(2, 132, 199, 0.2);
  white-space: nowrap;
}

.detail-btn {
  padding: 5px 10px;
  border-radius: 8px;
  background: var(--surface-soft);
  border: 1px solid var(--border-strong);
  font-size: 0.76rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
}

.detail-btn:hover {
  background: var(--sky);
  border-color: var(--sky);
  color: #ffffff;
}

.catalog-footer-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 16px;
  background: var(--surface-soft);
  font-size: 0.82rem;
  color: var(--ink-muted);
  flex-wrap: wrap;
}

/* Prev / Next Tab Pager */
.page-pager {
  padding: 22px 0;
  background: #ffffff;
  border-top: 1px solid var(--border);
}

.pager-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}

.pager-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border-radius: 12px;
  border: 1px solid var(--border-strong);
  background: #ffffff;
  font-size: 0.86rem;
  font-weight: 600;
  transition: all 0.14s ease;
}

.pager-link:hover {
  border-color: var(--sky);
  color: var(--sky);
}

/* Doc Pills & Footer */
.brochure-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.doc-pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 14px;
  border-radius: 11px;
  background: #ffffff;
  border: 1px solid var(--border-strong);
  font-size: 0.82rem;
  font-weight: 600;
}

.doc-pill:hover {
  border-color: var(--sky);
  color: var(--sky);
}

.site-footer {
  background: linear-gradient(155deg, #06101f 0%, #0d213d 100%);
  color: #e2e8f0;
  padding: 38px 0 28px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.95fr auto;
  gap: 24px;
  align-items: center;
  padding-bottom: 22px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.campus-card {
  display: flex;
  gap: 14px;
  align-items: center;
}

.campus-thumb {
  width: 132px;
  height: 90px;
  border-radius: 11px;
  overflow: hidden;
  flex: none;
  border: 1px solid rgba(255, 255, 255, 0.18);
}

.campus-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.campus-text h3 {
  margin: 0 0 3px;
  font-size: 1.02rem;
  color: #ffffff;
}

.campus-text p {
  margin: 0;
  font-size: 0.82rem;
  color: #94a3b8;
}

.contact-list {
  display: grid;
  gap: 6px;
  font-size: 0.86rem;
}

.contact-row {
  display: flex;
  gap: 10px;
}

.contact-lbl {
  color: #38bdf8;
  font-weight: 600;
  min-width: 68px;
}

.qr-card {
  background: #ffffff;
  color: var(--ink);
  border-radius: 12px;
  padding: 8px;
  text-align: center;
  width: 114px;
}

.qr-card img {
  width: 96px;
  height: 96px;
  object-fit: contain;
  margin: 0 auto 3px;
}

.qr-card span {
  display: block;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--ink-muted);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  padding-top: 14px;
  font-size: 0.76rem;
  color: #94a3b8;
}

/* Modal & Lightbox */
.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 120;
  background: rgba(7, 20, 38, 0.7);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 18px;
}

.modal-backdrop.open {
  display: flex;
}

.modal-box {
  background: #ffffff;
  border-radius: 18px;
  width: min(620px, 100%);
  max-height: 88vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  padding: 22px;
  position: relative;
}

.lightbox-box {
  background: #ffffff;
  border-radius: 16px;
  padding: 12px;
  max-width: min(980px, 96vw);
  max-height: 92vh;
  position: relative;
  text-align: center;
}

.lightbox-box img {
  max-height: 78vh;
  width: auto;
  margin: 0 auto;
  border-radius: 10px;
}

.lightbox-cap {
  margin-top: 8px;
  font-size: 0.86rem;
  color: var(--ink-muted);
}

.modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 32px;
  height: 32px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: #ffffff;
  font-size: 1rem;
  cursor: pointer;
}

.modal-kicker {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--sky);
}

.modal-box h3 {
  margin: 4px 0 12px;
  font-size: 1.2rem;
}

.modal-grid {
  display: grid;
  gap: 10px;
  font-size: 0.88rem;
}

.modal-row {
  background: var(--surface-soft);
  border-radius: 11px;
  padding: 10px 13px;
}

.modal-row strong {
  display: block;
  font-size: 0.75rem;
  color: var(--ink-subtle);
  margin-bottom: 2px;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 16px;
}

@media (max-width: 1020px) {
  .hero-grid,
  .split-card,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .grid-4,
  .steps-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-3,
  .steps-5 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-2 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .hero-kpis,
  .grid-4,
  .grid-3,
  .steps-4,
  .steps-5,
  .spec-mini-grid {
    grid-template-columns: 1fr;
  }

  .campus-card {
    flex-direction: column;
    align-items: flex-start;
  }

  .header-cta .btn-outline {
    display: none;
  }
}