/* ============================================
   睿控无疆 v2 — Neuralink/SpaceX 风格
   ============================================ */

/* ---------- CSS Variables ---------- */
:root {
  --bg-deep:    #05050d;
  --bg-main:    #0a0a18;
  --bg-card:    rgba(12,12,30,0.65);
  --text-pri:    #eeeef6;
  --text-sec:    #8888aa;
  --cyan:        #06b6d4;
  --purple:      #2563eb;
  --gradient:    linear-gradient(135deg, #06b6d4, #2563eb);
  --glow-cyan:  0 0 40px rgba(37,99,235,0.25);
  --radius:      14px;
  --ease:        cubic-bezier(0.16,1,0.3,1);
  font-size: 16px;
}

/* ---------- Reset ---------- */
*,*::before,*::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg-deep);
  color: var(--text-pri);
  line-height: 1.75;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration:none; color:inherit; }
button { font-family:inherit; }
img { display:block; max-width:100% }

/* subtle radial glows */
body::before {
  content:''; position:fixed; inset:0; z-index:0;
  background:
    radial-gradient(ellipse 60% 50% at 20% 15%, rgba(6,182,212,0.04), transparent),
    radial-gradient(ellipse 50% 60% at 80% 85%, rgba(37,99,235,0.035), transparent);
  pointer-events: none;
}

section { position:relative; z-index:1; }


/* ---------- Container ---------- */
.container { max-width:1120px; margin:0 auto; padding:0 32px; }


/* =============================================
   Navigation
   ============================================= */
nav {
  position:fixed; inset:0 0 auto 0; z-index:1000;
  padding: 18px 0;
  transition: background 0.4s, padding 0.4s, border 0.4s;
}
nav.scrolled {
  padding: 10px 0;
  background: rgba(5,5,13,0.82);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
nav .container {
  display:flex; align-items:center; justify-content:space-between;
}
.nav-logo { display:flex; align-items:center; gap:10px; }
.logo-icon {
  width:38px; height:38px; border-radius:10px;
  background: linear-gradient(135deg, #06b6d4, #2563eb);
  display:flex; align-items:center; justify-content:center;
  font-size:18px; font-weight:800; color:#fff;
}
.nav-logo span {
  font-size:1.05rem; font-weight:700;
  background: linear-gradient(135deg, #06b6d4, #2563eb);
  -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text;
}
.nav-links { display:flex; gap:32px; list-style:none; align-items:center; }
.nav-links a {
  font-size:0.85rem; color:var(--text-sec); font-weight:500;
  transition: color 0.3s; position:relative; padding:4px 0;
}
.nav-links a::after {
  content:''; position:absolute; bottom:0; left:0;
  width:0; height:1.5px; background:var(--cyan);
  transition: width 0.35s var(--ease);
}
.nav-links a:hover, .nav-links a.active { color:var(--text-pri); }
.nav-links a:hover::after, .nav-links a.active::after { width:100%; }
.menu-btn {
  display:none; background:none; border:none; color:var(--text-pri);
  font-size:1.5rem; cursor:pointer; padding:6px;
}
@media(max-width:768px){
  .nav-links{display:none}
  .menu-btn{display:block}
  .nav-links.open{
    display:flex; flex-direction:column; position:absolute;
    top:100%; left:0; right:0;
    background:rgba(5,5,13,0.97); backdrop-filter:blur(20px);
    padding:28px 32px; gap:18px;
  }
}


/* =============================================
   Hero Section (SpaceX/Neuralink style)
   ============================================= */
.hero {
  position:relative; min-height:100vh; display:flex; align-items:center;
  justify-content:center; overflow:hidden;
  padding: 100px 0 80px;
}
.hero-bg {
  position:absolute; inset:0; z-index:0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 45%, rgba(6,182,212,0.06), transparent 70%),
    radial-gradient(ellipse 50% 50% at 30% 60%, rgba(37,99,235,0.05), transparent 60%);
}
/* subtle animated grid dots */
.hero-bg::after {
  content:''; position:absolute; inset:0;
  background-image:
    radial-gradient(circle at center, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, black 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, black 20%, transparent 75%);
  animation: gridDrift 20s linear infinite;
  will-change: background-position;
}
@keyframes gridDrift {
  from { background-position: 0 0; }
  to   { background-position: 48px 48px; }
}

.hero-inner {
  position:relative; z-index:1; text-align:center;
  max-width:820px; margin:0 auto; padding:0 32px;
}
.hero-tag {
  display:inline-block; font-size:0.8rem; color:var(--text-sec);
  letter-spacing:0.08em; margin-bottom:32px; font-weight:400;
}
.hero-title {
  font-size: clamp(2.4rem, 5.5vw, 4.2rem);
  font-weight: 900; line-height:1.12; letter-spacing:-0.03em;
  margin-bottom:24px;
}
.hero-accent {
  background: var(--gradient);
  -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text;
}
.hero-sub {
  font-size: clamp(1rem, 1.6vw, 1.18rem);
  color: var(--text-sec); line-height:1.85; max-width:620px;
  margin:0 auto 40px;
}
.hero-highlight { color:var(--cyan); font-weight:700; }

.hero-actions { display:flex; gap:14px; justify-content:center; flex-wrap:wrap; margin-bottom:64px; }

.hero-stats {
  display:flex; align-items:center; justify-content:center; gap:40px;
  padding-top:48px; border-top:1px solid rgba(255,255,255,0.06);
}
.hero-stat { text-align:center; }
.hero-stat-num {
  display:block; font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight:900;
  background: var(--gradient);
  -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text;
  line-height:1;
}
.hero-stat-num span { font-size:0.45em; font-weight:600; }
.hero-stat-label { display:block; font-size:0.82rem; color:var(--text-sec); margin-top:6px; }
.hero-stat-divider { width:1px; height:48px; background:rgba(255,255,255,0.08); }

.hero-scroll-hint {
  position:absolute; bottom:36px; left:50%; transform:translateX(-50%);
  display:flex; flex-direction:column; align-items:center; gap:8px;
  font-size:0.72rem; color:var(--text-sec); opacity:0.5; letter-spacing:0.1em;
}
.scroll-arrow {
  width:20px; height:20px; border-right:1.5px solid var(--text-sec); border-bottom:1.5px solid var(--text-sec);
  transform:rotate(45deg); animation: scrollBounce 2s ease infinite;
}
@keyframes scrollBounce {
  0%,100%{ transform:rotate(45deg) translateY(0); opacity:0.5 }
  50%    { transform:rotate(45deg) translateY(6px); opacity:1 }
}

@media(max-width:768px){
  .hero{padding:120px 0 60px}
  .hero-stats{flex-direction:column; gap:20px}
  .hero-stat-divider{width:48px; height:1px}
  .hero-scroll-hint{display:none}
}


/* =============================================
   Buttons
   ============================================= */
.btn {
  display:inline-flex; align-items:center; gap:8px;
  padding: 13px 30px; border-radius:28px;
  font-size:0.93rem; font-weight:600; cursor:pointer;
  transition: all 0.35s var(--ease); border:none;
}
.btn-primary {
  background: var(--gradient); color:#fff;
}
.btn-primary:hover { box-shadow: var(--glow-cyan); transform:translateY(-2px); }
.btn-ghost {
  background:transparent; color:var(--text-pri);
  border:1.5px solid rgba(255,255,255,0.15);
}
.btn-ghost:hover { border-color:var(--cyan); color:var(--cyan); }
.btn-outline {
  background:transparent; border:1.5px solid rgba(255,255,255,0.18); color:var(--text-pri);
}
.btn-outline:hover { border-color:var(--cyan); color:var(--cyan); box-shadow: var(--glow-cyan); }


/* =============================================
   Section Common
   ============================================= */
.section { padding:120px 0; }
.section-header { text-align:center; margin-bottom:72px; }
.section-tag {
  display:inline-block; font-size:0.78rem; font-weight:600;
  letter-spacing:0.06em; text-transform:uppercase;
  margin-bottom:16px;
}
.section-tag.cyan  { color:var(--cyan); }
.section-tag.purple{ color:var(--purple); }
.section-tag.green { color:#10b981; }
h2 { font-size:clamp(1.6rem, 3vw, 2.4rem); font-weight:800; line-height:1.25; letter-spacing:-0.02em; }
.hl { background:var(--gradient); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }

/* Reveal animation */
.reveal { opacity:0; transform:translateY(36px); transition: opacity 0.9s var(--ease), transform 0.9s var(--ease); }
.reveal.visible { opacity:1; transform:translateY(0); }
.reveal-delay-1{ transition-delay:0.1s }
.reveal-delay-2{ transition-delay:0.2s }
.reveal-delay-3{ transition-delay:0.3s }


/* =============================================
   About Preview (homepage)
   ============================================= */
.about-preview-grid {
  display:grid; grid-template-columns:1fr 1fr; gap:80px; align-items:center;
}
.about-preview-text .section-tag { margin-bottom:12px; }
.about-preview-text h2 { margin-bottom:20px; }
.about-preview-desc { color:var(--text-sec); font-size:0.95rem; line-height:1.9; margin-bottom:24px; }

.ap-feature {
  display:flex; gap:16px; padding:18px 0; align-items:flex-start;
  border-bottom:1px solid rgba(255,255,255,0.04);
}
.ap-feature:last-child { border-bottom:none; }
.ap-feature-icon { font-size:1.5rem; flex-shrink:0; margin-top:2px; }
.ap-feature h4 { font-size:0.95rem; font-weight:700; margin-bottom:4px; }
.ap-feature p  { font-size:0.83rem; color:var(--text-sec); line-height:1.6; }

@media(max-width:768px){
  .about-preview-grid{grid-template-columns:1fr; gap:48px}
  .section{padding:80px 0}
}


/* =============================================
   Quick Links (homepage)
   ============================================= */
.quick-links-grid {
  display:grid; grid-template-columns:repeat(3,1fr); gap:20px;
}
.ql-card {
  display:flex; flex-direction:column; align-items:center; text-align:center;
  padding:40px 24px; border-radius:var(--radius);
  background: var(--bg-card);
  border:1px solid rgba(255,255,255,0.05);
  transition: all 0.4s var(--ease); position:relative; overflow:hidden;
}
.ql-card::before {
  content:''; position:absolute; inset:0; border-radius:var(--radius);
  background: linear-gradient(180deg, rgba(6,182,212,0.06), transparent 50%);
  opacity:0; transition: opacity 0.4s;
}
.ql-card:hover { transform:translateY(-6px); border-color:rgba(6,182,212,0.18); }
.ql-card:hover::before { opacity:1; }
.ql-icon { font-size:2.4rem; margin-bottom:16px; }
.ql-card h3 { font-size:1.05rem; font-weight:700; margin-bottom:8px; }
.ql-card p  { font-size:0.82rem; color:var(--text-sec); line-height:1.6; margin-bottom:12px; }
.ql-arrow { font-size:0.85rem; color:var(--cyan); opacity:0; transform:translateX(-6px); transition: all 0.35s var(--ease); }
.ql-card:hover .ql-arrow { opacity:1; transform:translateX(0); }

@media(max-width:1024px){
  .quick-links-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:480px){
  .quick-links-grid{grid-template-columns:1fr}
}


/* =============================================
   Credentials (homepage)
   ============================================= */
.credentials-grid { display:grid; grid-template-columns:repeat(2,1fr); gap:28px; }
.cred-card {
  border-radius:var(--radius); overflow:hidden; background:var(--bg-card);
  border:1px solid rgba(255,255,255,0.05);
  transition: all 0.4s var(--ease); cursor:pointer; position:relative;
}
.cred-card:hover { border-color:rgba(255,255,255,0.12); transform:translateY(-4px); }
.cred-card img { width:100%; height:280px; object-fit:cover; display:block; transition: transform 0.5s var(--ease); }
.cred-card:hover img { transform:scale(1.02); }
.cred-zoom {
  position:absolute; top:14px; right:14px; z-index:2;
  background:rgba(0,0,0,0.5); backdrop-filter:blur(8px);
  padding:5px 12px; border-radius:20px; font-size:0.74rem; color:rgba(255,255,255,0.7);
  pointer-events:none; opacity:0; transition: opacity 0.35s;
}
.cred-card:hover .cred-zoom { opacity:1; }
.cred-info { padding:24px; }
.cred-tag { display:inline-block; padding:3px 10px; border-radius:8px; font-size:0.72rem; font-weight:600; margin-bottom:10px; }
.cred-tag-gold { background:rgba(245,158,11,0.12); color:#f59e0b; }
.cred-tag-green{ background:rgba(16,185,129,0.12); color:#10b981; }
.cred-info h4 { font-size:1.02rem; font-weight:700; margin-bottom:6px; }
.cred-info p  { font-size:0.85rem; color:var(--text-sec); line-height:1.6; }

@media(max-width:768px){
  .credentials-grid{grid-template-columns:1fr}
}


/* =============================================
   CTA Section
   ============================================= */
.cta-section {
  text-align:center; padding:120px 0;
  background:
    radial-gradient(ellipse 60% 50% at 50% 50%, rgba(6,182,212,0.04), transparent 70%);
}
.cta-section h2 {
  font-size:clamp(1.8rem, 3.5vw, 2.8rem); font-weight:800;
  margin-bottom:16px;
}
.cta-section p { color:var(--text-sec); font-size:1rem; margin-bottom:40px; line-height:1.8; }
.cta-actions { display:flex; gap:14px; justify-content:center; flex-wrap:wrap; }


/* =============================================
   Footer
   ============================================= */
footer { border-top:1px solid rgba(255,255,255,0.05); padding:64px 0 32px; }
.footer-grid {
  display:grid; grid-template-columns:2fr 1fr 1fr; gap:56px; margin-bottom:48px;
}
.footer-logo { display:flex; align-items:center; gap:10px; margin-bottom:16px; }
.logo-icon-sm {
  width:32px; height:32px; border-radius:8px;
  background:linear-gradient(135deg,#06b6d4,#2563eb);
  display:flex; align-items:center; justify-content:center;
  font-size:14px; font-weight:800; color:#fff;
}
.footer-logo span {
  font-weight:700; font-size:1rem;
  background:linear-gradient(135deg,#06b6d4,#2563eb);
  -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text;
}
.footer-brand p { font-size:0.85rem; color:var(--text-sec); line-height:1.7; }
.footer-col h4 { font-size:0.9rem; font-weight:600; margin-bottom:16px; color:var(--text-pri); }
.footer-col a { display:block; font-size:0.85rem; color:var(--text-sec); margin-bottom:10px; transition: color 0.3s; }
.footer-col a:hover { color:var(--cyan); }
.footer-bottom { text-align:center; font-size:0.78rem; color:rgba(255,255,255,0.25); padding-top:28px; border-top:1px solid rgba(255,255,255,0.04); }

@media(max-width:768px){
  .footer-grid{grid-template-columns:1fr; gap:36px; text-align:center}
}


/* =============================================
   Modal / Lightbox
   ============================================= */
.modal-overlay {
  display:none; position:fixed; inset:0; z-index:9999;
  background:rgba(0,0,0,0.88); backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  align-items:center; justify-content:center;
  animation: fadeIn 0.25s ease;
}
.modal-overlay.show { display:flex; }
@keyframes fadeIn { from{opacity:0} to{opacity:1} }

.modal-close {
  position:absolute; top:20px; right:24px; z-index:10001;
  width:44px; height:44px; border-radius:50%;
  background:rgba(255,255,255,0.08); border:none; color:#fff;
  font-size:1.3rem; cursor:pointer; display:flex; align-items:center; justify-content:center;
  transition: all 0.3s;
}
.modal-close:hover { background:rgba(255,255,255,0.18); transform:rotate(90deg); }

.modal-body { max-width:90vw; max-height:85vh; position:relative; }
.modal-body img { max-width:100%; max-height:85vh; border-radius:12px; }

/* Tech detail modal */
.tech-modal .modal-body {
  background:var(--bg-card); border:1px solid rgba(255,255,255,0.08);
  border-radius:var(--radius); padding:48px; max-width:720px; width:90vw;
  max-height:80vh; overflow-y:auto;
}
.tm-header { display:flex; align-items:center; gap:14px; margin-bottom:20px; }
.tm-icon { font-size:2.4rem; }
.tm-title { font-size:1.5rem; font-weight:800; }
.tm-subtitle { color:var(--cyan); font-size:0.92rem; margin-bottom:20px; }
.tm-desc { color:var(--text-sec); font-size:0.93rem; line-height:1.85; margin-bottom:24px; }
.tech-tm-list { list-style:none; }
.tech-tm-list li {
  padding:12px 0; border-bottom:1px solid rgba(255,255,255,0.04);
  display:flex; gap:10px; font-size:0.88rem; line-height:1.65;
}
.tech-tm-list li:last-child { border-bottom:none; }
.li-dot { color:var(--cyan); flex-shrink:0; }


/* =============================================
   Page Hero (sub-pages)
   ============================================= */
.page-hero {
  padding:160px 0 80px; text-align:center; position:relative; overflow:hidden;
}
.page-hero h1 {
  font-size:clamp(2rem, 4.5vw, 3.2rem); font-weight:900;
  line-height:1.15; letter-spacing:-0.02em; margin-bottom:16px;
}
.page-hero p { color:var(--text-sec); font-size:1.05rem; max-width:560px; margin:0 auto; line-height:1.85; }
.page-hero .breadcrumb { font-size:0.82rem; color:var(--text-sec); margin-bottom:12px; }
.page-hero .breadcrumb a { color:var(--cyan); }


/* =============================================
   About Page
   ============================================= */
.about-grid { display:grid; grid-template-columns:1fr; gap:48px; max-width:800px; margin:0 auto; }
.about-content h3 { font-size:1.5rem; font-weight:700; margin-bottom:18px; }
.about-content p { color:var(--text-sec); font-size:0.95rem; line-height:1.85; margin-bottom:16px; }
.about-features { display:grid; grid-template-columns:1fr 1fr; gap:14px; margin-top:28px; }
.about-feature {
  display:flex; gap:12px; padding:18px; border-radius:12px;
  background:var(--bg-card); border:1px solid rgba(255,255,255,0.04);
}

/* Timeline */
.timeline { position:relative; margin:48px 0; padding-left:28px; }
.timeline::before {
  content:''; position:absolute; left:0; top:0; bottom:0; width:2px;
  background:linear-gradient(to bottom, var(--cyan), var(--purple)); border-radius:1px;
}
.timeline-item { position:relative; padding-left:28px; padding-bottom:36px; }
.timeline-item::before {
  content:''; position:absolute; left:-5px; top:4px;
  width:12px; height:12px; border-radius:50%; background:var(--cyan);
  box-shadow:0 0 12px rgba(6,182,212,0.5);
}
.timeline-date { font-size:0.78rem; color:var(--cyan); font-weight:600; }
.timeline-title { font-size:1rem; font-weight:700; margin:4px 0; }
.timeline-desc { font-size:0.85rem; color:var(--text-sec); line-height:1.65; }

/* Office gallery */
.office-gallery { display:grid; grid-template-columns:1fr 1fr; gap:20px; margin-top:36px; }
.office-img-wrap {
  border-radius:var(--radius); overflow:hidden; position:relative;
  border:1px solid rgba(255,255,255,0.05);
}
.office-img-wrap img { width:100%; height:300px; object-fit:cover; transition: transform 0.5s var(--ease); }
.office-img-wrap:hover img { transform:scale(1.03); }
.office-caption {
  position:absolute; bottom:0; left:0; right:0;
  padding:16px 20px; background:linear-gradient(transparent,rgba(5,5,13,0.95));
}
.office-caption span { font-size:0.85rem; font-weight:600; }

/* Scientist Profile */
.scientist-card {
  display:grid; grid-template-columns:340px 1fr; gap:48px;
  align-items:center; max-width:1000px; margin:0 auto;
}
.scientist-photo-wrap {
  border-radius:var(--radius); overflow:hidden; position:relative;
  border:1px solid rgba(255,255,255,0.06); cursor:pointer;
  aspect-ratio:3/4;
}
.scientist-photo-wrap img { width:100%; height:100%; object-fit:cover; transition:transform 0.5s var(--ease); }
.scientist-photo-wrap:hover img { transform:scale(1.04); }
.scientist-photo-overlay {
  position:absolute; inset:0; display:flex; align-items:center; justify-content:center;
  background:rgba(5,5,13,0.5); opacity:0; transition:opacity 0.3s;
  color:#fff; font-size:0.9rem; font-weight:600; backdrop-filter:blur(4px);
}
.scientist-photo-wrap:hover .scientist-photo-overlay { opacity:1; }
.scientist-info { padding:8px 0; }
.scientist-title {
  font-size:0.88rem; color:var(--cyan); font-weight:600; margin-bottom:18px;
  letter-spacing:0.02em;
}
.scientist-info p { color:var(--text-sec); font-size:0.92rem; line-height:1.85; margin-bottom:14px; }
.scientist-stats {
  display:grid; grid-template-columns:repeat(4,1fr); gap:12px; margin-top:24px;
}
.scientist-stats div {
  text-align:center; padding:14px 8px; border-radius:12px;
  background:var(--bg-card); border:1px solid rgba(255,255,255,0.04);
}
.scientist-stats strong {
  display:block; font-size:1.6rem; font-weight:800;
  background:var(--gradient); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text;
  margin-bottom:4px;
}
.scientist-stats span { font-size:0.7rem; color:var(--text-sec); }

@media(max-width:900px){
  .scientist-card{grid-template-columns:1fr;gap:32px;max-width:560px;text-align:center}
  .scientist-photo-wrap{max-width:280px;margin:0 auto}
  .scientist-stats{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:480px){
  .scientist-stats{grid-template-columns:repeat(2,1fr)}
  .scientist-stats strong{font-size:1.3rem}
}

/* =============================================
   Products Page
   ============================================= */
.products-showcase {
  border-radius:var(--radius); background:var(--bg-card);
  border:1px solid rgba(255,255,255,0.05); padding:48px; margin-bottom:48px;
}
.product-badge {
  display:inline-flex; align-items:center; gap:6px;
  padding:4px 14px; border-radius:12px;
  background:rgba(16,185,129,0.1); color:#10b981;
  font-size:0.78rem; font-weight:600; margin-bottom:14px;
}
.products-showcase h3 { font-size:1.6rem; font-weight:800; margin-bottom:10px; }
.products-showcase .subtitle { color:var(--cyan); font-size:1rem; margin-bottom:20px; }
.product-tags { display:flex; flex-wrap:wrap; gap:8px; margin-bottom:24px; }
.product-tags span {
  padding:6px 14px; border-radius:20px;
  background:rgba(255,255,255,0.04); border:1px solid rgba(255,255,255,0.06);
  font-size:0.82rem; color:var(--text-sec);
}
.dual-drive { display:grid; grid-template-columns:1fr 1fr; gap:24px; margin-top:32px; }
.drive-card {
  padding:32px; border-radius:var(--radius);
  background:rgba(8,8,22,0.6); border:1px solid rgba(255,255,255,0.05);
  transition: all 0.4s var(--ease);
}
.drive-card:hover { border-color:rgba(6,182,212,0.18); transform:translateY(-4px); }
.drive-icon { font-size:2.4rem; margin-bottom:16px; }
.drive-card h4 { font-size:1.1rem; font-weight:700; margin-bottom:8px; }
.drive-card p  { font-size:0.88rem; color:var(--text-sec); line-height:1.65; }

/* Tech grid */
.tech-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:22px; }
.tech-card {
  padding:32px 24px; border-radius:var(--radius);
  background:var(--bg-card); border:1px solid rgba(255,255,255,0.04);
  transition: all 0.4s var(--ease); cursor:pointer; position:relative; overflow:hidden;
}
.tech-card::before {
  content:''; position:absolute; top:0; left:0; right:0; height:2px;
  background:linear-gradient(90deg, #06b6d4, #2563eb);
  transform:scaleX(0); transform-origin:left; transition:transform 0.5s var(--ease);
}
.tech-card:hover::before { transform:scaleX(1); }
.tech-card:hover { transform:translateY(-6px); border-color:rgba(6,182,212,0.15); }
.tech-num {
  position:absolute; top:8px; right:16px; font-size:3rem; font-weight:900;
  color:rgba(255,255,255,0.025); line-height:1;
}
.tech-icon { font-size:2rem; margin-bottom:16px; display:block; }
.tech-card h3 { font-size:1.02rem; font-weight:700; margin-bottom:8px; }
.tech-card p  { font-size:0.83rem; color:var(--text-sec); line-height:1.65; }
.tech-arrow { margin-top:14px; font-size:0.8rem; color:var(--cyan); opacity:0; transform:translateX(-6px); transition: all 0.35s var(--ease); }
.tech-card:hover .tech-arrow { opacity:1; transform:translateX(0); }

@media(max-width:1024px){ .tech-grid{grid-template-columns:repeat(2,1fr)} }
@media(max-width:768px){ .tech-grid{grid-template-columns:1fr} }


/* =============================================
   Clinical Page
   ============================================= */
.clinical-grid { display:grid; grid-template-columns:1fr 1fr; gap:48px; align-items:start; }
.clinical-grid-single { max-width:720px; margin:0 auto; }
.chart-container {
  background:var(--bg-card); border-radius:var(--radius);
  padding:32px; border:1px solid rgba(255,255,255,0.05);
}
.chart-container h3 { font-size:1.2rem; margin-bottom:24px; }
.chart-row { display:flex; align-items:center; gap:14px; margin-bottom:24px; }
.chart-label { width:100px; font-size:0.85rem; font-weight:600; flex-shrink:0; }
.chart-bar-wrap { flex:1; display:flex; flex-direction:column; gap:12px; }
.chart-bar-group { display:flex; align-items:center; gap:8px; width:100%; }
.chart-bar-label { width:64px; font-size:0.75rem; color:var(--text-sec); flex-shrink:0; }
.chart-bar-bg {
  flex:1; height:32px; border-radius:8px; background:rgba(255,255,255,0.04);
  position:relative; overflow:hidden;
}
.chart-bar-fill {
  position:absolute; left:0; top:0; height:100%; border-radius:8px;
  transition: width 1.2s var(--ease);
}
.chart-bar-value { min-width:42px; font-size:0.78rem; font-weight:700; color:#fff; text-align:left; flex-shrink:0; }
.chart-bar-value.dim { color:var(--text-sec); font-weight:400; }
.chart-bar-fill.ruikong { background:linear-gradient(90deg,#06b6d4,#2563eb); }
.chart-bar-fill.regular  { background:linear-gradient(90deg,#3b3b5c,#555577); }

/* Competitive table */
.competitive-table {
  background:var(--bg-card); border-radius:var(--radius);
  overflow:hidden; border:1px solid rgba(255,255,255,0.05);
}
.competitive-table table { width:100%; border-collapse:collapse; }
.competitive-table th {
  background:rgba(6,182,212,0.05); padding:14px 16px;
  text-align:left; font-size:0.82rem; font-weight:600; color:var(--cyan);
}
.competitive-table td {
  padding:13px 16px; font-size:0.85rem;
  border-top:1px solid rgba(255,255,255,0.04); color:var(--text-sec);
}
.competitive-table .highlight-row td { color:var(--text-pri); font-weight:600; background:rgba(6,182,212,0.025); }

.market-stats { display:grid; grid-template-columns:repeat(3,1fr); gap:22px; margin-top:48px; }
.market-stat {
  text-align:center; padding:36px 20px; border-radius:var(--radius);
  background:var(--bg-card); border:1px solid rgba(255,255,255,0.04);
  transition: border-color 0.35s;
}
.market-stat:hover { border-color:rgba(6,182,212,0.18); }
.stat-value {
  font-size:clamp(1.8rem, 3vw, 2.6rem); font-weight:900;
  background:var(--gradient); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text;
  margin-bottom:10px;
}
.stat-label { font-size:0.88rem; color:var(--text-sec); line-height:1.5; }

@media(max-width:768px){
  .clinical-grid{grid-template-columns:1fr}
  .clinical-grid-single{max-width:100%}
  .market-stats{grid-template-columns:1fr}
  .competitive-table{overflow-x:auto}
  .competitive-table table{min-width:520px}
}


/* =============================================
   Team Page
   ============================================= */
.team-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:24px; }
.team-card {
  padding:32px 24px; border-radius:var(--radius);
  background:var(--bg-card); border:1px solid rgba(255,255,255,0.04);
  transition: all 0.4s var(--ease); display:flex; flex-direction:column; height:100%;
}
.team-card:hover { transform:translateY(-4px); border-color:rgba(37,99,235,0.15); }
.team-avatar {
  width:80px; height:80px; border-radius:50%; margin:0 auto 16px;
  position:relative; overflow:hidden;
  background: linear-gradient(135deg, #06b6d4, #2563eb);
  display:flex; align-items:center; justify-content:center;
  font-size:1.6rem; font-weight:700; color:#fff;
}
.team-avatar img { width:100%; height:100%; object-fit:cover; border-radius:50%; position:relative; z-index:1; }
.team-card h4 { font-size:1.05rem; font-weight:700; text-align:center; margin-bottom:4px; }
.team-role { font-size:0.8rem; color:var(--cyan); text-align:center; font-weight:500; margin-bottom:14px; }
.team-bio { font-size:0.83rem; color:var(--text-sec); line-height:1.75; flex:1; }
.team-highlights { margin-top:14px; display:flex; flex-wrap:wrap; gap:6px; }
.team-highlight {
  padding:4px 10px; border-radius:6px; font-size:0.72rem;
  background:rgba(6,182,212,0.05); color:var(--cyan);
  border:1px solid rgba(6,182,212,0.08);
}

@media(min-width:1025px){
  .team-grid{grid-template-columns:repeat(4,1fr)}
  .team-card.founder{grid-column:span 2}
}
@media(max-width:1024px) and (min-width:769px){
  .team-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .team-grid{grid-template-columns:1fr}
  .team-card.founder,.team-card.staff{grid-column:span 1}
}


/* =============================================
   Contact Page
   ============================================= */
.contact-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:28px; margin-top:48px; }
.contact-card {
  text-align:center; padding:40px 28px; border-radius:var(--radius);
  background:var(--bg-card); border:1px solid rgba(255,255,255,0.05);
  transition: all 0.35s;
}
.contact-card:hover { border-color:rgba(6,182,212,0.18); transform:translateY(-4px); }
.contact-card .ci { font-size:2.4rem; margin-bottom:16px; }
.contact-card h4 { font-size:1rem; margin-bottom:8px; }
.contact-card p { font-size:0.87rem; color:var(--text-sec); line-height:1.65; }

@media(max-width:768px){
  .contact-grid{grid-template-columns:1fr}
}


/* =============================================
   Responsive (global)
   ============================================= */
@media(max-width:768px){
  .container{padding:0 20px}
  .section{padding:80px 0}
  .page-hero{padding:130px 0 56px}
  .cta-section{padding:80px 0}
  .products-showcase{padding:28px}
  .dual-drive{grid-template-columns:1fr}
  .about-features{grid-template-columns:1fr}
  .office-gallery{grid-template-columns:1fr}
  .credentials-grid{grid-template-columns:1fr}
  .tech-modal .modal-body{padding:28px 20px}
}
@media(max-width:480px){
  .section{padding:64px 0}
  .team-card{padding:24px 18px}
  .hero-inner{padding:0 20px}
  .chart-label{width:70px;font-size:0.75rem}
  .chart-bar-label{width:48px;font-size:0.68rem}
  .chart-bar-value{min-width:34px;font-size:0.72rem}
}

/* =============================================
   Back to Top Button
   ============================================= */
#backToTop {
  position:fixed; bottom:32px; right:32px; z-index:9998;
  width:46px; height:46px; border-radius:50%;
  background:rgba(10,10,24,0.85); border:1px solid rgba(255,255,255,0.12);
  backdrop-filter:blur(12px); -webkit-backdrop-filter:blur(12px);
  color:var(--text-pri); font-size:1.2rem; cursor:pointer;
  display:flex; align-items:center; justify-content:center;
  opacity:0; visibility:hidden; transform:translateY(12px);
  transition: all 0.35s var(--ease);
}
#backToTop:hover { border-color:var(--cyan); color:var(--cyan); transform:translateY(-2px); }
#backToTop.visible { opacity:1; visibility:visible; transform:translateY(0); }
@media(max-width:768px){
  #backToTop{bottom:20px; right:16px; width:40px; height:40px}
}

/* =============================================
   Modal Caption (Lightbox)
   ============================================= */
.modal-caption {
  text-align:center; padding:16px 24px; color:rgba(255,255,255,0.7);
  font-size:0.92rem; line-height:1.6;
}

/* =============================================
   404 Page
   ============================================= */
.error-page {
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  min-height:100vh; text-align:center; padding:40px 20px;
}
.error-code {
  font-size:clamp(6rem, 12vw, 10rem); font-weight:900; line-height:1;
  background:var(--gradient);
  -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text;
  margin-bottom:16px;
}
.error-title { font-size:clamp(1.2rem, 2.5vw, 1.6rem); font-weight:700; margin-bottom:12px; }
.error-desc { color:var(--text-sec); font-size:0.95rem; line-height:1.8; margin-bottom:36px; max-width:480px; }

/* =============================================
   Privacy Page
   ============================================= */
.privacy-content { max-width:800px; margin:0 auto; }
.privacy-content h3 { font-size:1.15rem; font-weight:700; margin:32px 0 12px; color:var(--cyan); }
.privacy-content p  { font-size:0.92rem; color:var(--text-sec); line-height:1.85; margin-bottom:14px; }
.privacy-content ul { padding-left:20px; margin-bottom:16px; }
.privacy-content li { font-size:0.92rem; color:var(--text-sec); line-height:1.8; }