:root {
  --ink: #071428;
  --ink-mid: #0d213d;
  --ink-soft: #163458;
  --clinical: #1a5fad;
  --clinical-bright: #3b82d6;
  --clinical-soft: #e8f1fb;
  --accent: #1a5fad;
  --accent-soft: #9ec2ef;
  --text: #f5f8fc;
  --muted: #a0b3cc;
  --line: rgba(255, 255, 255, 0.14);
  --panel: rgba(255, 255, 255, 0.07);
  --paper: #f7fafc;
  --paper-2: #eef3f9;
  --paper-ink: #12263f;
  --paper-muted: #5c708a;
  --radius: 20px;
  --shadow: 0 22px 50px rgba(7, 20, 40, 0.22);
  --font-sans: "Manrope", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-serif: "Noto Serif SC", "Songti SC", serif;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--ink);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.container {
  width: min(1160px, calc(100% - 2.5rem));
  margin: 0 auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(18px);
  background: rgba(7, 20, 40, 0.84);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s ease, background 0.25s ease;
}

.site-header.is-scrolled {
  border-bottom-color: var(--line);
  background: rgba(7, 20, 40, 0.94);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.brand-mark {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  color: #fff;
  background:
    linear-gradient(145deg, #3b82d6, #1a5fad 52%, #0d3d7a);
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.18),
    0 8px 20px rgba(26, 95, 173, 0.3);
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 0.08rem;
}

.brand-text strong {
  font-family: var(--font-serif);
  font-size: 1.18rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.brand-text small {
  color: var(--muted);
  font-size: 0.72rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.15rem;
}

.site-nav a {
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

.site-nav a:hover { color: var(--text); }

.nav-cta {
  padding: 0.55rem 1.05rem;
  border-radius: 999px;
  background: var(--accent);
  color: #fff !important;
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: transparent;
  padding: 0;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 1.5px;
  margin: 5px auto;
  background: var(--text);
}

/* Hero */
.hero {
  position: relative;
  min-height: calc(100vh - 76px);
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 4.5rem 0 5.5rem;
}

.hero-atmosphere {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 55% 50% at 78% 28%, rgba(59, 130, 214, 0.3), transparent 60%),
    radial-gradient(ellipse 45% 40% at 18% 78%, rgba(59, 130, 214, 0.12), transparent 55%),
    linear-gradient(165deg, #071428 0%, #0d2748 42%, #08182e 100%);
  pointer-events: none;
}

.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(2px);
  opacity: 0.55;
}

.hero-orb-a {
  width: 280px;
  height: 280px;
  right: 12%;
  top: 16%;
  background: radial-gradient(circle, rgba(59, 130, 214, 0.48), transparent 68%);
  animation: floaty 9s ease-in-out infinite;
}

.hero-orb-b {
  width: 180px;
  height: 180px;
  left: 8%;
  bottom: 18%;
  background: radial-gradient(circle, rgba(26, 95, 173, 0.35), transparent 70%);
  animation: floaty 11s ease-in-out infinite reverse;
}

.hero-pulse {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 12%;
  width: 100%;
  height: 90px;
  opacity: 0.35;
}

.hero-pulse path {
  fill: none;
  stroke: rgba(120, 175, 235, 0.9);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 1200;
  stroke-dashoffset: 1200;
  animation: pulse-draw 4.8s ease-in-out infinite;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.2fr 0.9fr;
  gap: 2.8rem;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 1.15rem;
  padding: 0.38rem 0.85rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  color: var(--muted);
  font-size: 0.82rem;
  letter-spacing: 0.1em;
}

.eyebrow::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--clinical-bright);
  box-shadow: 0 0 0 4px rgba(59, 130, 214, 0.22);
}

.hero-copy h1 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(3.1rem, 7vw, 5.5rem);
  font-weight: 700;
  letter-spacing: 0.1em;
  line-height: 1.02;
}

.hero-slogan {
  margin: 1.15rem 0 0;
  font-size: clamp(1.2rem, 2.3vw, 1.65rem);
  font-weight: 500;
  letter-spacing: 0.05em;
}

.hero-slogan span {
  display: inline-block;
  margin-left: 0.55rem;
  color: var(--accent-soft);
}

.hero-desc {
  margin: 1.35rem 0 0;
  max-width: 36rem;
  color: var(--muted);
  font-size: 1.05rem;
}

.hero-actions,
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 2rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.75rem 1.4rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.2s ease, filter 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { filter: brightness(1.06); }
.btn-ghost {
  border: 1px solid rgba(255, 255, 255, 0.28);
  background: transparent;
}
.btn-ghost:hover { border-color: rgba(255, 255, 255, 0.5); }

.visual-card {
  padding: 1.6rem 1.55rem;
  border-radius: 24px;
  background:
    linear-gradient(160deg, rgba(255, 255, 255, 0.09), rgba(255, 255, 255, 0.03));
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.visual-badge {
  display: inline-block;
  margin-bottom: 0.9rem;
  padding: 0.28rem 0.7rem;
  border-radius: 999px;
  background: rgba(59, 130, 214, 0.16);
  color: var(--clinical-bright);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.visual-card h2 {
  margin: 0 0 1.2rem;
  font-family: var(--font-serif);
  font-size: 1.45rem;
  line-height: 1.35;
  letter-spacing: 0.03em;
}

.visual-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.visual-list li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.85rem;
  align-items: start;
}

.visual-list .ico {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  color: var(--clinical-bright);
  background: rgba(59, 130, 214, 0.12);
  border: 1px solid rgba(59, 130, 214, 0.28);
}

.visual-list strong {
  display: block;
  margin-bottom: 0.15rem;
  font-size: 0.98rem;
}

.visual-list p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

/* Stats */
.stats-bar {
  position: relative;
  z-index: 2;
  margin-top: -1.5rem;
  padding-bottom: 0.5rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.9rem;
  padding: 0.9rem;
  border-radius: 22px;
  background: rgba(245, 248, 249, 0.96);
  border: 1px solid rgba(18, 48, 58, 0.08);
  box-shadow: 0 18px 40px rgba(6, 24, 32, 0.14);
}

.stat {
  padding: 1.1rem 1rem;
  border-radius: 16px;
  background: linear-gradient(180deg, #fff, #f3f7fc);
  border: 1px solid rgba(26, 95, 173, 0.1);
}

.stat strong {
  display: block;
  color: var(--paper-ink);
  font-family: var(--font-serif);
  font-size: 1.2rem;
  letter-spacing: 0.04em;
}

.stat span {
  color: var(--paper-muted);
  font-size: 0.88rem;
}

/* Sections */
.section {
  padding: 5.8rem 0;
  background: var(--paper);
  color: var(--paper-ink);
}

.section-soft { background: var(--paper-2); }

.section-dark {
  background:
    radial-gradient(ellipse 50% 45% at 85% 20%, rgba(59, 130, 214, 0.22), transparent 55%),
    linear-gradient(180deg, #0c2444 0%, #071428 100%);
  color: var(--text);
}

.section-contact {
  background:
    radial-gradient(ellipse 55% 45% at 8% 15%, rgba(59, 130, 214, 0.22), transparent 55%),
    linear-gradient(180deg, #0c2546 0%, #071428 100%);
  color: var(--text);
}

.section-head { max-width: 46rem; }

.section-label {
  margin: 0 0 0.75rem;
  color: var(--clinical);
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.16em;
}

.section-label.light,
.section-contact .section-label {
  color: var(--clinical-bright);
}

.section h2 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(1.85rem, 3.4vw, 2.55rem);
  line-height: 1.28;
  letter-spacing: 0.03em;
}

.lead {
  margin: 1rem 0 0;
  color: var(--paper-muted);
  font-size: 1.05rem;
}

.lead.light,
.section-contact .lead,
.section-dark .lead {
  color: var(--muted);
}

/* About */
.about-layout {
  display: grid;
  grid-template-columns: 1.35fr 0.85fr;
  gap: 1.4rem;
  margin-top: 2.6rem;
}

.about-main,
.side-card,
.product-card,
.quality-card,
.service-card,
.clinical-card {
  border-radius: var(--radius);
  border: 1px solid rgba(18, 48, 58, 0.08);
  background: rgba(255, 255, 255, 0.78);
}

.about-main {
  padding: 1.8rem;
}

.about-main h3,
.product-card h3,
.quality-card h3,
.service-card h3,
.clinical-card h3 {
  margin: 0 0 0.7rem;
  font-family: var(--font-serif);
  font-size: 1.25rem;
}

.about-main > p {
  margin: 0;
  color: var(--paper-muted);
}

.mission-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.85rem;
  margin-top: 1.5rem;
}

.mission-row article {
  padding: 1rem;
  border-radius: 14px;
  background: var(--clinical-soft);
  border: 1px solid rgba(26, 95, 173, 0.12);
}

.mission-row h4 {
  margin: 0 0 0.4rem;
  color: var(--clinical);
  font-size: 0.9rem;
  letter-spacing: 0.08em;
}

.mission-row p {
  margin: 0;
  color: var(--paper-ink);
  font-size: 0.95rem;
}

.side-card {
  padding: 1.5rem;
  height: 100%;
  background:
    linear-gradient(180deg, #fff, #f2f7fc);
}

.side-label {
  margin: 0 0 1rem;
  color: var(--clinical);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.side-card dl,
.contact-card dl {
  margin: 0;
  display: grid;
  gap: 1rem;
}

.side-card dt,
.contact-card dt {
  margin-bottom: 0.2rem;
  color: var(--paper-muted);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
}

.contact-card dt { color: var(--muted); }

.side-card dd,
.contact-card dd {
  margin: 0;
  font-weight: 600;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.9rem;
  margin-top: 1.4rem;
}

.timeline article {
  position: relative;
  padding: 1.35rem 1.2rem;
  border-radius: var(--radius);
  background: #fff;
  border: 1px solid rgba(18, 48, 58, 0.08);
  overflow: hidden;
}

.timeline article::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--clinical-bright), var(--clinical));
}

.timeline span {
  display: block;
  margin-bottom: 0.55rem;
  color: var(--clinical);
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 700;
}

.timeline h3 {
  margin: 0 0 0.45rem;
  font-family: var(--font-serif);
  font-size: 1.08rem;
}

.timeline p {
  margin: 0;
  color: var(--paper-muted);
  font-size: 0.92rem;
}

/* Products */
.product-grid,
.quality-grid,
.service-grid,
.clinical-grid {
  display: grid;
  gap: 1rem;
  margin-top: 2.4rem;
}

.product-grid,
.quality-grid,
.service-grid,
.clinical-grid {
  grid-template-columns: repeat(2, 1fr);
}

.product-card,
.quality-card,
.service-card {
  padding: 1.55rem;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.product-card:hover,
.quality-card:hover,
.service-card:hover,
.clinical-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 34px rgba(6, 24, 32, 0.1);
}

.product-icon {
  width: 52px;
  height: 52px;
  margin-bottom: 1rem;
  border-radius: 16px;
  display: grid;
  place-items: center;
  color: var(--clinical);
  background: var(--clinical-soft);
  border: 1px solid rgba(26, 95, 173, 0.15);
}

.product-card p,
.quality-card p,
.service-card p,
.clinical-card p {
  margin: 0;
  color: var(--paper-muted);
}

.product-card ul {
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.product-card li {
  padding: 0.28rem 0.65rem;
  border-radius: 999px;
  background: rgba(26, 95, 173, 0.1);
  color: var(--clinical);
  font-size: 0.8rem;
  font-weight: 600;
}

/* Clinical */
.clinical-card {
  padding: 1.55rem;
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--line);
  color: var(--text);
}

.clinical-card:hover {
  box-shadow: 0 16px 34px rgba(0, 0, 0, 0.22);
}

.clinical-tag {
  display: inline-block;
  margin-bottom: 0.8rem;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  background: rgba(59, 130, 214, 0.16);
  color: var(--clinical-bright);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.clinical-card p { color: var(--muted); }

/* Quality */
.trust-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.85rem;
  margin-top: 1.2rem;
}

.trust-strip div {
  padding: 1.1rem 1rem;
  border-radius: 16px;
  background: linear-gradient(180deg, #fff, #eef4fb);
  border: 1px solid rgba(26, 95, 173, 0.12);
}

.trust-strip strong {
  display: block;
  margin-bottom: 0.25rem;
  color: var(--clinical);
  font-family: var(--font-serif);
  font-size: 1.15rem;
}

.trust-strip span {
  color: var(--paper-muted);
  font-size: 0.9rem;
}

/* Service */
.service-card .num {
  display: block;
  margin-bottom: 0.7rem;
  color: var(--accent);
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.95fr;
  gap: 2rem;
  align-items: end;
}

.contact-card {
  padding: 1.7rem;
  border-radius: calc(var(--radius) + 4px);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--line);
}

.contact-card a:hover { color: var(--clinical-bright); }

/* Footer */
.site-footer {
  padding: 1.8rem 0 2.2rem;
  background: #050e1c;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.1fr 1fr auto;
  gap: 1rem;
  align-items: center;
  color: var(--muted);
  font-size: 0.9rem;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.footer-brand strong {
  color: var(--text);
  font-family: var(--font-serif);
  letter-spacing: 0.06em;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-nav a:hover { color: var(--text); }

/* Reveal */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-14px); }
}

@keyframes pulse-draw {
  0% { stroke-dashoffset: 1200; opacity: 0.15; }
  35% { opacity: 0.55; }
  70% { stroke-dashoffset: 0; opacity: 0.4; }
  100% { stroke-dashoffset: -200; opacity: 0.1; }
}

@media (max-width: 980px) {
  .hero-grid,
  .about-layout,
  .mission-row,
  .timeline,
  .product-grid,
  .quality-grid,
  .service-grid,
  .clinical-grid,
  .trust-strip,
  .stats-grid,
  .contact-grid,
  .footer-inner {
    grid-template-columns: 1fr;
  }

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

  .site-nav {
    position: absolute;
    top: 76px;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.75rem 1.25rem 1.25rem;
    background: rgba(7, 20, 40, 0.97);
    border-bottom: 1px solid var(--line);
  }

  .site-nav.is-open { display: flex; }

  .site-nav a {
    padding: 0.85rem 0.25rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  }

  .nav-cta {
    margin-top: 0.5rem;
    text-align: center;
  }

  .stats-bar { margin-top: 0; padding: 0 0 1rem; }
  .hero { min-height: auto; padding-top: 3.2rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal,
  .hero-orb,
  .hero-pulse path {
    animation: none !important;
    transition: none !important;
    opacity: 1;
    transform: none;
  }
  .btn:hover,
  .product-card:hover,
  .quality-card:hover,
  .service-card:hover,
  .clinical-card:hover {
    transform: none;
  }
}