/* ══════════════════════════════════════════════════
   FRONT PAGE - HOMEPAGE SPECIFIC STYLES
   首页特有样式 - Hero横幅、价值主张、产品分类、特色产品、统计数据、行业应用、新闻、CTA
══════════════════════════════════════════════════ */

/* ══════════════════════════════════════════════════
   HERO SECTION
══════════════════════════════════════════════════ */
#hero {
  position: relative; min-height: 600px; height: 70vh; max-height: 800px; overflow: hidden;
  display: flex; align-items: center;
  background: linear-gradient(135deg, #1565C0 0%, #0D47A1 60%, #0A2E6E 100%);
}
.hero-video-bg {
  position: absolute; inset: 0;
  overflow: hidden;
}
.hero-video-bg video {
  position: absolute;
  top: 50%;
  left: 50%;
  min-width: 100%;
  min-height: 100%;
  width: auto;
  height: auto;
  transform: translate(-50%, -50%);
  object-fit: cover;
  opacity: 0.4;
}
.hero-grad {
  position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(21,101,192,.75) 30%, rgba(21,101,192,.35) 60%, transparent 100%);
  z-index: 1;
}
.hero-inner {
  position: relative; z-index: 2;
  max-width: var(--max-w); margin: 0 auto;
  padding: 8rem var(--px) 5rem;
  display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center;
  width: 100%;
}
.hero-tag {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px; letter-spacing: .3em; text-transform: uppercase;
  color: rgba(255,255,255,.55); margin-bottom: 1.25rem; display: block;
  transition: opacity .5s;
}
.hero-title {
  font-size: clamp(2.25rem, 5vw, 3.75rem);
  font-weight: 700; color: #fff; white-space: pre-line;
  margin-bottom: 1.5rem;
  transition: opacity .5s, transform .5s;
}
.hero-desc-box {
  background: rgba(255,255,255,.1); backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 14px; padding: 1.5rem; max-width: 480px;
  margin-bottom: 2rem;
  transition: opacity .5s;
}
.hero-desc-box p { color: rgba(255,255,255,.8); font-size: 15px; line-height: 1.7; }
.btn-primary {
  display: inline-flex; align-items: center; gap: .5rem;
  background: #fff; color: var(--primary);
  font-family: 'Space Grotesk', sans-serif; font-weight: 600; font-size: 15px;
  padding: .875rem 2rem; border-radius: 10px;
  transition: background .2s, transform .15s, box-shadow .2s;
  box-shadow: 0 4px 20px rgba(0,0,0,.15);
}
.btn-primary:hover { background: rgba(255,255,255,.92); transform: translateY(-1px); box-shadow: 0 8px 30px rgba(0,0,0,.2); }
.btn-primary svg { transition: transform .2s; }
.btn-primary:hover svg { transform: translateX(4px); }
.btn-outline {
  display: inline-flex; align-items: center; gap: .5rem;
  background: transparent; color: #fff;
  font-family: 'Space Grotesk', sans-serif; font-weight: 600; font-size: 15px;
  padding: .875rem 2rem; border-radius: 10px; border: 1px solid rgba(255,255,255,.25);
  transition: background .2s;
}
.btn-outline:hover { background: rgba(255,255,255,.1); }
.hero-hud {
  display: flex; gap: 1.5rem; margin-top: 2.5rem; flex-wrap: wrap;
  transition: opacity .5s;
}
.hud-stat { display: flex; align-items: center; gap: .75rem; }
.hud-icon {
  width: 40px; height: 40px; border-radius: 10px;
  background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.1);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.hud-icon svg { width: 16px; height: 16px; color: rgba(255,255,255,.65); }
.hud-label {
  font-family: 'IBM Plex Mono', monospace; font-size: 10px;
  letter-spacing: .25em; text-transform: uppercase; color: rgba(255,255,255,.45);
}
.hud-value {
  font-family: 'Space Grotesk', sans-serif; font-weight: 700;
  font-size: 18px; color: #fff; margin-top: 2px;
}

/* hero product image */
.hero-visual { display: flex; justify-content: center; align-items: center; }
.hero-orb {
  width: clamp(300px, 40vw, 500px); height: clamp(300px, 40vw, 500px);
  border-radius: 50%;
  background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.08);
  display: flex; align-items: center; justify-content: center;
  position: relative;
  animation: orbPulse 6s ease-in-out infinite;
}
@keyframes orbPulse { 0%,100%{box-shadow:0 0 0 0 rgba(255,255,255,.05)} 50%{box-shadow:0 0 0 20px rgba(255,255,255,.02)} }
.hero-orb-ring {
  position: absolute; inset: -12px; border-radius: 50%;
  border: .5px solid rgba(255,255,255,.05);
  animation: spinSlow 30s linear infinite;
}
@keyframes spinSlow { to { transform: rotate(360deg); } }
.hero-orb img {
  width: 80%; height: 80%; object-fit: contain;
  filter: drop-shadow(0 20px 40px rgba(0,0,0,.3));
}

/* slide indicators */
.hero-dots {
  position: absolute; bottom: 2.5rem; left: 50%; transform: translateX(-50%);
  display: flex; gap: .75rem; z-index: 3;
}
.hero-dot {
  height: 6px; border-radius: 3px; background: rgba(255,255,255,.3);
  transition: width .5s, background .5s;
  width: 12px;
}
.hero-dot.active { width: 32px; background: #fff; }

/* transitions */
.hero-content { transition: opacity .5s, transform .5s; }
.hero-content.fade-out { opacity: 0; transform: translateY(-20px); pointer-events: none; }
.hero-content.fade-in { opacity: 1; transform: none; }

@media (max-width: 1023px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
}

/* ══════════════════════════════════════════════════
   VALUE PROPS
══════════════════════════════════════════════════ */
#value-props { padding: 5rem 0; border-bottom: .5px solid var(--border); }
.vp-header { text-align: center; margin-bottom: 3.5rem; }
.vp-header h2 { font-size: clamp(1.75rem, 3vw, 2.5rem); font-weight: 700; margin-top: .75rem; }
.vp-header p { color: var(--muted); max-width: 520px; margin: 1rem auto 0; }
.vp-grid {
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 1.5rem;
}
@media (max-width: 1023px) { .vp-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 600px)  { .vp-grid { grid-template-columns: repeat(2, 1fr); } }
.vp-item { text-align: center; }
.vp-icon {
  width: 64px; height: 64px; margin: 0 auto 1rem;
  border-radius: 18px; background: var(--cyan);
  border: 1px solid rgba(21,101,192,.1);
  display: flex; align-items: center; justify-content: center;
  transition: background .3s, border-color .3s;
}
.vp-item:hover .vp-icon { background: rgba(21,101,192,.1); border-color: rgba(21,101,192,.3); }
.vp-icon svg { width: 28px; height: 28px; color: rgba(21,101,192,.65); transition: color .3s; }
.vp-item:hover .vp-icon svg { color: var(--primary); }
.vp-item h3 { font-family: 'Space Grotesk', sans-serif; font-weight: 600; font-size: 13px; color: var(--fg); }
.vp-item p { color: var(--muted); font-size: 12px; line-height: 1.6; margin-top: .35rem; }

/* ══════════════════════════════════════════════════
   PRODUCT CATEGORIES
══════════════════════════════════════════════════ */
#categories { padding: 5rem 0; background: var(--card); border-bottom: .5px solid var(--border); }
.section-header {
  display: flex; justify-content: space-between; align-items: flex-end;
  margin-bottom: 3.5rem; flex-wrap: wrap; gap: 1rem;
}
.section-header h2 { font-size: clamp(1.75rem, 3vw, 2.5rem); font-weight: 700; margin-top: .75rem; }
.link-btn {
  display: flex; align-items: center; gap: 4px;
  font-size: 13px; font-weight: 500; color: var(--primary);
  transition: opacity .2s;
}
.link-btn:hover { opacity: .75; }
.link-btn svg { width: 14px; height: 14px; transition: transform .2s; }
.link-btn:hover svg { transform: translateX(3px); }
.cat-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem;
}
@media (max-width: 1023px) { .cat-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px)  { .cat-grid { grid-template-columns: 1fr; } }
.cat-card {
  background: var(--bg); border-radius: 14px;
  border: .5px solid var(--border); overflow: hidden;
  transition: border-color .4s, box-shadow .4s, transform .3s;
  cursor: pointer;
}
.cat-card:hover { border-color: rgba(21,101,192,.3); box-shadow: 0 8px 30px rgba(21,101,192,.07); transform: translateY(-2px); }
.cat-img-wrap {
  aspect-ratio: 4/3; overflow: hidden;
  background: #f1f5f9; position: relative;
}
.cat-img-wrap img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .7s;
}
.cat-card:hover .cat-img-wrap img { transform: scale(1.05); }
.cat-overlay {
  position: absolute; inset: 0;
  background: rgba(30,41,59,0);
  display: flex; align-items: center; justify-content: center;
  transition: background .4s;
}
.cat-card:hover .cat-overlay { background: rgba(30,41,59,.82); }
.cat-overlay-content {
  text-align: center; opacity: 0; transition: opacity .3s;
}
.cat-card:hover .cat-overlay-content { opacity: 1; }
.cat-overlay-content .spec-label {
  font-family: 'IBM Plex Mono', monospace; font-size: 10px;
  letter-spacing: .2em; text-transform: uppercase; color: rgba(255,255,255,.55);
}
.cat-overlay-content .spec-val {
  font-family: 'IBM Plex Mono', monospace; font-size: 14px;
  color: #fff; margin-top: .5rem;
}
.cat-overlay-content .explore-btn {
  margin-top: 1rem; padding: .5rem 1.25rem;
  background: #fff; color: var(--fg); border-radius: 8px;
  font-size: 12px; font-weight: 600;
  transition: background .2s;
}
.cat-overlay-content .explore-btn:hover { background: rgba(255,255,255,.9); }
.cat-body { padding: 1.25rem; }
.cat-body h3 { font-family: 'Space Grotesk', sans-serif; font-weight: 600; font-size: 14px; color: var(--fg); }
.cat-body p { color: var(--muted); font-size: 12px; margin-top: .4rem; line-height: 1.5; }

/* ══════════════════════════════════════════════════
   FEATURED PRODUCT
══════════════════════════════════════════════════ */
#featured { padding: 5rem 0; border-bottom: .5px solid var(--border); overflow: hidden; }
.featured-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center;
}
@media (max-width: 900px) { .featured-grid { grid-template-columns: 1fr; } }
.featured-img-wrap {
  background: #f1f5f9; border-radius: 20px; padding: 2.5rem;
  border: .5px solid var(--border); position: relative;
}
.featured-img-wrap img { width: 100%; height: auto; border-radius: 10px; }
.featured-badge {
  position: absolute; bottom: -1rem; right: -1rem;
  background: var(--card); border-radius: 14px;
  box-shadow: 0 10px 30px rgba(0,0,0,.1); border: .5px solid var(--border);
  padding: 1rem 1.25rem; min-width: 180px;
}
.badge-label { font-family: 'IBM Plex Mono', monospace; font-size: 10px; letter-spacing: .2em; text-transform: uppercase; color: var(--muted); }
.badge-val { font-family: 'Space Grotesk', sans-serif; font-weight: 700; font-size: 16px; color: var(--fg); margin-top: 4px; }
.badge-divider { height: .5px; background: var(--border); margin: 8px 0; }
.badge-cta { font-family: 'Space Grotesk', sans-serif; font-weight: 700; font-size: 16px; color: var(--primary); }
.featured-content h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem); font-weight: 700;
  color: var(--fg); margin-top: .75rem; line-height: 1.2;
}
.featured-content p { color: var(--muted); margin-top: 1rem; max-width: 420px; line-height: 1.7; }
.feature-list { list-style: none; margin-top: 2rem; display: flex; flex-direction: column; gap: .75rem; }
.feature-list li { display: flex; align-items: center; gap: .75rem; font-size: 14px; color: rgba(30,41,59,.8); }
.check-icon {
  width: 20px; height: 20px; border-radius: 50%;
  background: rgba(21,101,192,.08); flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
}
.check-icon svg { width: 12px; height: 12px; color: var(--primary); }
.btn-row { display: flex; gap: .75rem; margin-top: 2rem; flex-wrap: wrap; }
.btn-dark {
  display: inline-flex; align-items: center; gap: .5rem;
  background: var(--fg); color: #fff;
  font-family: 'Space Grotesk', sans-serif; font-weight: 600; font-size: 15px;
  padding: .875rem 2rem; border-radius: 10px;
  transition: background .2s, transform .15s;
}
.btn-dark:hover { background: #0f172a; transform: translateY(-1px); }
.btn-dark svg { transition: transform .2s; }
.btn-dark:hover svg { transform: translateX(4px); }
.btn-ghost {
  display: inline-flex; align-items: center; gap: .5rem;
  background: transparent; color: var(--fg);
  font-family: 'Space Grotesk', sans-serif; font-weight: 600; font-size: 15px;
  padding: .875rem 2rem; border-radius: 10px;
  border: 1px solid var(--border);
  transition: border-color .2s, background .2s;
}
.btn-ghost:hover { border-color: var(--primary); background: var(--cyan); }

/* ══════════════════════════════════════════════════
   STATS
══════════════════════════════════════════════════ */
#stats { padding: 4rem 0; background: var(--fg); position: relative; overflow: hidden; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem; }
@media (max-width: 768px) { .stats-grid { grid-template-columns: repeat(2, 1fr); } }
.stat-item { text-align: center; }
.stat-mono { font-family: 'IBM Plex Mono', monospace; font-size: 10px; letter-spacing: .3em; text-transform: uppercase; color: rgba(248,250,252,.35); }
.stat-val { font-family: 'Space Grotesk', sans-serif; font-weight: 700; font-size: clamp(2rem, 4vw, 3.25rem); color: #F8FAFC; margin-top: .5rem; }
.stat-label { color: rgba(248,250,252,.55); font-size: 13px; margin-top: .35rem; }

/* ══════════════════════════════════════════════════
   INDUSTRIES
══════════════════════════════════════════════════ */
#industries { padding: 5rem 0; background: var(--card); border-bottom: .5px solid var(--border); }
.industry-layout { display: grid; grid-template-columns: 280px 1fr; gap: 2rem; }
@media (max-width: 900px) { .industry-layout { grid-template-columns: 1fr; } }
.industry-tabs { display: flex; flex-direction: column; gap: .5rem; }
@media (max-width: 900px) { .industry-tabs { flex-direction: row; overflow-x: auto; padding-bottom: .5rem; } }
.ind-tab {
  padding: .75rem 1rem; border-radius: 12px; font-size: 14px; font-weight: 500;
  text-align: left; color: rgba(30,41,59,.6); white-space: nowrap;
  border: .5px solid var(--border);
  transition: background .3s, color .3s, border-color .3s, box-shadow .3s;
}
.ind-tab.active { background: var(--primary); color: #fff; border-color: var(--primary); box-shadow: 0 4px 16px rgba(21,101,192,.25); }
.ind-tab:not(.active):hover { background: var(--cyan); color: var(--fg); border-color: rgba(21,101,192,.15); }
.ind-panel {
  background: var(--bg); border-radius: 20px;
  border: .5px solid var(--border); padding: 2.5rem;
  display: none;
}
.ind-panel.active { display: block; animation: fadeSlide .3s ease; }
@keyframes fadeSlide { from{opacity:0;transform:translateX(16px)} to{opacity:1;transform:none} }
.ind-panel h3 { font-size: 1.5rem; font-weight: 700; color: var(--fg); }
.ind-panel p { color: var(--muted); margin-top: 1rem; line-height: 1.7; max-width: 520px; }
.ind-products { margin-top: 1.5rem; padding-top: 1.5rem; border-top: .5px solid var(--border); }
.ind-products .spec-label { font-family: 'IBM Plex Mono', monospace; font-size: 10px; letter-spacing: .3em; text-transform: uppercase; color: var(--muted); }
.ind-products .spec-val { font-family: 'IBM Plex Mono', monospace; font-size: 13px; color: var(--fg); margin-top: .5rem; }
.ind-link { display: inline-flex; align-items: center; gap: 4px; margin-top: 1.5rem; font-size: 13px; font-weight: 500; color: var(--primary); transition: gap .2s; }
.ind-link:hover { gap: 8px; }
.ind-link svg { width: 14px; height: 14px; }

/* ══════════════════════════════════════════════════
   NEWS
══════════════════════════════════════════════════ */
#news { padding: 5rem 0; border-bottom: .5px solid var(--border); }
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
@media (max-width: 900px) { .news-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .news-grid { grid-template-columns: 1fr; } }
.news-card {
  background: var(--card); border-radius: 14px;
  border: .5px solid var(--border); padding: 1.5rem;
  display: flex; flex-direction: column;
  transition: border-color .4s, box-shadow .4s, transform .3s;
  cursor: pointer;
}
.news-card:hover { border-color: rgba(21,101,192,.2); box-shadow: 0 8px 30px rgba(21,101,192,.06); transform: translateY(-2px); }
.news-meta { display: flex; align-items: center; gap: .75rem; margin-bottom: 1rem; flex-wrap: wrap; }
.news-cat {
  font-family: 'IBM Plex Mono', monospace; font-size: 10px;
  letter-spacing: .2em; text-transform: uppercase;
  color: var(--primary); background: rgba(21,101,192,.05);
  padding: .25rem .625rem; border-radius: 6px;
}
.news-date { display: flex; align-items: center; gap: 4px; color: var(--muted); font-size: 11px; }
.news-date svg { width: 12px; height: 12px; }
.news-card h3 {
  font-family: 'Space Grotesk', sans-serif; font-weight: 600;
  font-size: 15px; color: var(--fg); line-height: 1.4;
  transition: color .2s;
}
.news-card:hover h3 { color: var(--primary); }
.news-card p { color: var(--muted); font-size: 13px; margin-top: .75rem; line-height: 1.6; flex: 1; }
.news-footer { margin-top: 1rem; padding-top: 1rem; border-top: .5px solid var(--border); }
.news-footer span { font-size: 12px; font-weight: 500; color: var(--primary); display: flex; align-items: center; gap: 4px; }
.news-footer svg { width: 12px; height: 12px; transition: transform .2s; }
.news-card:hover .news-footer svg { transform: translateX(4px); }

/* ══════════════════════════════════════════════════
   CTA
══════════════════════════════════════════════════ */
#cta {
  position: relative; padding: 6rem 0; overflow: hidden;
  text-align: center;
}
.cta-bg {
  position: absolute; inset: 0;
  background-image: url('https://media.base44.com/images/public/69d4935f66a37d69b53f0f3d/018709eb2_generated_e5c2dc89.png');
  background-size: cover; background-position: center;
}
.cta-overlay { position: absolute; inset: 0; background: rgba(30,41,59,.87); }
.cta-inner { position: relative; z-index: 2; }
.cta-inner .label { color: #E0F2FE; }
.cta-inner h2 {
  font-size: clamp(2rem, 4vw, 3.25rem); font-weight: 700;
  color: #F8FAFC; margin-top: 1rem;
  max-width: 600px; margin-left: auto; margin-right: auto;
}
.cta-inner p { color: rgba(248,250,252,.6); max-width: 460px; margin: 1rem auto 0; }
.cta-btns { display: flex; gap: 1rem; justify-content: center; margin-top: 2.5rem; flex-wrap: wrap; }
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