/* =====================================================================
   home.css — 军之甲首页增强样式（动态 / 高端 / 科技感）
   依赖 style.css 的设计变量（--color-accent 等）
   ===================================================================== */

/* ───────────────────────────────────────────────────────────────
   1) HERO 轮播 Banner（4 张图）
   ─────────────────────────────────────────────────────────────── */
.hero-carousel {
  position: relative;
  height: 100vh;
  min-height: 620px;
  overflow: hidden;
  background: #050608;
}
.hc-slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transform: scale(1.12);
  transition: opacity 1.1s ease, transform 7s ease;
  z-index: 1;
}
.hc-slide.is-active {
  opacity: 1;
  transform: scale(1);
  z-index: 2;
}
.hc-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(5,6,8,0.92) 0%, rgba(5,6,8,0.55) 45%, rgba(5,6,8,0.15) 100%),
    linear-gradient(0deg, rgba(5,6,8,0.85) 0%, rgba(5,6,8,0.10) 55%);
}
/* 品牌色斜向光带 */
.hc-overlay::after {
  content: "";
  position: absolute;
  left: -10%; bottom: -40%;
  width: 60%; height: 120%;
  background: radial-gradient(closest-side, rgba(252,63,30,0.28), transparent 70%);
  filter: blur(20px);
}
.hc-content {
  position: absolute;
  z-index: 3;
  left: 0; right: 0; bottom: 0; top: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-8);
}
.hc-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  align-self: flex-start;
  padding: 8px 16px;
  border-radius: 999px;
  background: rgba(252,63,30,0.14);
  border: 1px solid rgba(252,63,30,0.5);
  color: #fff;
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.04em;
  backdrop-filter: blur(4px);
  margin-bottom: var(--space-5);
  opacity: 0; transform: translateY(20px);
}
.hc-title {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 6vw, 5rem);
  line-height: 1.05;
  font-weight: 800;
  color: #fff;
  letter-spacing: 0.01em;
  margin: 0 0 var(--space-5);
  text-shadow: 0 4px 30px rgba(0,0,0,0.5);
  opacity: 0; transform: translateY(28px);
}
.hc-sub {
  max-width: 620px;
  color: rgba(255,255,255,0.82);
  font-size: var(--text-md);
  line-height: 1.85;
  margin: 0 0 var(--space-7);
  opacity: 0; transform: translateY(28px);
}
.hc-actions { display: flex; gap: var(--space-4); flex-wrap: wrap;
  opacity: 0; transform: translateY(28px); }
.hc-slide.is-active .hc-badge { animation: hcUp .7s .15s forwards; }
.hc-slide.is-active .hc-title { animation: hcUp .8s .30s forwards; }
.hc-slide.is-active .hc-sub   { animation: hcUp .8s .45s forwards; }
.hc-slide.is-active .hc-actions{ animation: hcUp .8s .60s forwards; }
@keyframes hcUp { to { opacity:1; transform: translateY(0); } }

.hc-arrow {
  position: absolute;
  top: 50%; transform: translateY(-50%);
  z-index: 5;
  width: 54px; height: 54px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.25);
  background: rgba(10,10,12,0.35);
  color: #fff;
  font-size: 26px; line-height: 1;
  cursor: pointer;
  backdrop-filter: blur(6px);
  transition: all .25s ease;
  display: flex; align-items: center; justify-content: center;
}
.hc-arrow:hover { background: var(--color-accent); border-color: var(--color-accent); transform: translateY(-50%) scale(1.08); }
.hc-prev { left: var(--space-6); }
.hc-next { right: var(--space-6); }
.hc-dots {
  position: absolute;
  z-index: 5;
  bottom: var(--space-8);
  left: 50%; transform: translateX(-50%);
  display: flex; gap: 12px;
}
.hc-dot {
  width: 38px; height: 5px; border-radius: 3px;
  background: rgba(255,255,255,0.3);
  border: none; cursor: pointer; padding: 0;
  transition: all .3s ease;
}
.hc-dot.is-active { background: var(--color-accent); width: 56px; }
.hc-scroll {
  position: absolute; z-index: 5; bottom: var(--space-8); right: var(--space-8);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  color: rgba(255,255,255,0.65); font-size: var(--text-xs); letter-spacing: 0.2em;
}
.hc-scroll .line { width: 1px; height: 46px; background: linear-gradient(var(--color-accent), transparent); animation: hcLine 1.8s infinite; }
@keyframes hcLine { 0%,100%{ transform: scaleY(0.4); opacity:.4 } 50%{ transform: scaleY(1); opacity:1 } }

/* ───────────────────────────────────────────────────────────────
   2) 产品系列（8 张卡）
   ─────────────────────────────────────────────────────────────── */
.series-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
}
.series-card {
  position: relative;
  min-height: 260px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  color: #fff;
  text-decoration: none;
  isolation: isolate;
  box-shadow: 0 12px 30px rgba(0,0,0,0.12);
  transform: translateY(0);
  transition: transform .4s cubic-bezier(.2,.7,.2,1), box-shadow .4s;
}
.series-card__bg { position:absolute; inset:0; background-size:cover; background-position:center; transition: transform .6s ease; z-index:-2; }
.series-card__overlay {
  position:absolute; inset:0; z-index:-1;
  background: linear-gradient(180deg, rgba(13,13,13,0.15) 0%, rgba(13,13,13,0.88) 100%);
  transition: background .4s;
}
.series-card:hover { transform: translateY(-8px); box-shadow: 0 24px 50px rgba(252,63,30,0.25); }
.series-card:hover .series-card__bg { transform: scale(1.08); }
.series-card__content { margin-top: auto; padding: var(--space-6); }
.series-card__name { font-size: var(--text-lg); font-weight: 700; margin: 0 0 4px; }
.series-card__count { font-size: var(--text-sm); color: rgba(255,255,255,0.7); margin: 0 0 var(--space-3); }
.series-card__link { font-size: var(--text-sm); color: var(--color-accent); font-weight: 600; }
/* OEM 定制卡 — 品牌渐变高亮 */
.series-card--oem {
  background: linear-gradient(135deg, #14110f, #2a0d06);
}
.series-card--oem .series-card__overlay { background: linear-gradient(180deg, rgba(20,17,15,0.20) 0%, rgba(40,12,6,0.88) 100%); }
.series-card--oem::before {
  content:""; position:absolute; inset:0; padding:2px; border-radius:inherit;
  background: linear-gradient(135deg, #FFC24B, #FC3F1E, #B22222);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  opacity:.0; transition: opacity .4s;
}
.series-card--oem:hover::before { opacity: 1; }
.series-card--oem .series-card__link { color: #fff; }

/* ───────────────────────────────────────────────────────────────
   3) 核心优势 — 动态高端卡片（8 张）
   ─────────────────────────────────────────────────────────────── */
.adv-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
}
.adv-card {
  position: relative;
  padding: var(--space-7) var(--space-6) var(--space-6);
  background: #fff;
  border-radius: 18px;
  border: 1px solid rgba(13,13,13,0.08);
  overflow: hidden;
  isolation: isolate;
  transition: transform .45s cubic-bezier(.2,.7,.2,1), box-shadow .45s, border-color .45s;
}
/* accent top bar that draws in on hover */
.adv-card::before {
  content: ""; position: absolute; left: 0; top: 0; height: 3px; width: 100%;
  background: linear-gradient(90deg, var(--color-accent), var(--color-primary));
  transform: scaleX(0); transform-origin: left; transition: transform .5s cubic-bezier(.2,.7,.2,1);
}
/* very soft mouse-follow glow */
.adv-card::after {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: radial-gradient(260px circle at var(--mx,50%) var(--my,100%), rgba(252,63,30,0.06), transparent 60%);
  opacity: 0; transition: opacity .45s; pointer-events: none;
}
.adv-card:hover { transform: translateY(-6px); box-shadow: 0 22px 44px rgba(13,13,13,0.10); border-color: rgba(252,63,30,0.30); }
.adv-card:hover::before { transform: scaleX(1); }
.adv-card:hover::after { opacity: 1; }

.adv-card__num {
  position: absolute; top: 18px; right: 20px;
  font-family: var(--font-display); font-size: 0.92rem; font-weight: 800; letter-spacing: .5px;
  color: var(--color-accent);
  padding: 4px 11px; border-radius: 999px;
  background: rgba(252,63,30,0.08);
  border: 1px solid rgba(252,63,30,0.18);
}
.adv-card__icon {
  width: 54px; height: 54px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center; font-size: 26px;
  margin-bottom: var(--space-5);
  background: linear-gradient(135deg, rgba(252,63,30,0.14), rgba(178,34,34,0.10));
  box-shadow: inset 0 0 0 1px rgba(252,63,30,0.12);
  transition: transform .45s cubic-bezier(.2,.7,.2,1), box-shadow .45s;
}
.adv-card:hover .adv-card__icon { transform: translateY(-3px) rotate(-6deg) scale(1.04); box-shadow: inset 0 0 0 1px rgba(252,63,30,0.25), 0 12px 24px rgba(252,63,30,0.18); }
.adv-card__title { font-size: var(--text-md); font-weight: 700; margin: 0 0 var(--space-2); color: var(--color-dark); letter-spacing: .2px; }
.adv-card__desc { font-size: var(--text-sm); color: var(--color-gray-700); line-height: 1.75; margin: 0; }

/* ───────────────────────────────────────────────────────────────
   4) 热门推荐 — 右→左 跑马灯
   ─────────────────────────────────────────────────────────────── */
.marquee {
  position: relative;
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
          mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
}
.marquee__track {
  display: flex;
  gap: var(--space-6);
  width: max-content;
  animation: marqueeLeft 42s linear infinite;
}
.marquee:hover .marquee__track { animation-play-state: paused; }
@keyframes marqueeLeft {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}
.marquee__card {
  flex: 0 0 320px;
  width: 320px;
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  border: 1px solid rgba(13,13,13,0.06);
  transition: transform .35s ease, box-shadow .35s ease, border-color .35s ease;
  display: block;
}
.marquee__card:hover {
  transform: translateY(-10px);
  box-shadow: 0 24px 46px rgba(0,0,0,0.16);
  border-color: rgba(252,63,30,0.35);
}
.marquee__img { position: relative; height: 200px; overflow: hidden; background: var(--color-off-white); }
.marquee__img img { width:100%; height:100%; object-fit: cover; transition: transform .6s ease; }
.marquee__card:hover .marquee__img img { transform: scale(1.08); }
.marquee__badge {
  position: absolute; top: 12px; left: 12px;
  background: var(--color-accent); color:#fff; font-size: var(--text-xs);
  font-weight: 700; padding: 4px 10px; border-radius: 999px;
}
.marquee__body { padding: var(--space-5); }
.marquee__cat { font-size: var(--text-xs); color: var(--color-accent); font-weight: 700; letter-spacing: .04em; }
.marquee__title { font-size: var(--text-md); font-weight: 700; margin: 6px 0 8px; color: var(--color-dark); }
.marquee__desc { font-size: var(--text-sm); color: var(--color-gray-700); line-height: 1.7; margin: 0 0 12px;
  display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; }
.marquee__more { font-size: var(--text-sm); font-weight: 600; color: var(--color-dark); display:inline-flex; align-items:center; gap:6px; }
.marquee__more svg { transition: transform .3s; }
.marquee__card:hover .marquee__more svg { transform: translateX(4px); }

/* ───────────────────────────────────────────────────────────────
   5) 关于军之甲 — 科技动态
   ─────────────────────────────────────────────────────────────── */
.about-tech {
  position: relative;
  background: radial-gradient(1200px 600px at 80% -10%, rgba(252,63,30,0.18), transparent 60%), #0a0b0e;
  color: #fff;
  overflow: hidden;
}
.about-tech::before {
  content:""; position:absolute; inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 46px 46px;
  -webkit-mask-image: radial-gradient(circle at 50% 40%, #000, transparent 80%);
          mask-image: radial-gradient(circle at 50% 40%, #000, transparent 80%);
  animation: gridFloat 22s linear infinite;
}
@keyframes gridFloat { from { background-position: 0 0; } to { background-position: 46px 46px; } }
.about-tech__orb {
  position:absolute; border-radius:50%; filter: blur(60px); opacity:.5; z-index:0;
}
.about-tech__orb--1 { width:380px; height:380px; background:rgba(252,63,30,0.35); top:-120px; left:-80px; animation: orbMove 14s ease-in-out infinite; }
.about-tech__orb--2 { width:300px; height:300px; background:rgba(65,105,225,0.30); bottom:-100px; right:-60px; animation: orbMove 18s ease-in-out infinite reverse; }
@keyframes orbMove { 0%,100%{ transform: translate(0,0); } 50%{ transform: translate(40px,30px); } }
.about-tech .container { position: relative; z-index: 1; }
.about-tech__grid { display:grid; grid-template-columns: 1.05fr 0.95fr; gap: var(--space-16); align-items:center; }
.about-tech__tag { color: var(--color-accent); font-weight:700; letter-spacing:.12em; font-size: var(--text-sm); }
.about-tech__title {
  font-family: var(--font-display); font-size: clamp(2rem,4.4vw,3.4rem); font-weight:800;
  line-height:1.08; margin: var(--space-4) 0 var(--space-5);
  background: linear-gradient(100deg, #fff 30%, #FFC24B 60%, #FC3F1E 100%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
  background-size: 200% auto; animation: shine 6s linear infinite;
}
@keyframes shine { to { background-position: 200% center; } }
.about-tech__lead { color: rgba(255,255,255,0.78); line-height:1.95; margin-bottom: var(--space-8); }
.about-stats { display:grid; grid-template-columns: repeat(3,1fr); gap: var(--space-5); }
.about-stat { position:relative; padding: var(--space-5); border-radius: var(--radius-lg);
  background: rgba(255,255,255,0.04); border:1px solid rgba(255,255,255,0.08); backdrop-filter: blur(4px); }
.about-stat__num { font-family: var(--font-display); font-size: 2.6rem; font-weight:800; color:#fff; line-height:1; }
.about-stat__num span { color: var(--color-accent); }
.about-stat__label { font-size: var(--text-sm); color: rgba(255,255,255,0.62); margin-top:6px; }
.about-tech__media { position: relative; }
.about-tech__media img {
  width:100%; border-radius: var(--radius-xl);
  box-shadow: 0 30px 80px rgba(0,0,0,0.5);
  border: 1px solid rgba(255,255,255,0.08);
}
/* 科技感四角框 */
.about-tech__frame { position:absolute; inset:14px; border:1px solid rgba(252,63,30,0.5); border-radius: var(--radius-xl); pointer-events:none; }
.about-tech__frame span { position:absolute; width:22px; height:22px; border:2px solid var(--color-accent); }
.about-tech__frame .c1 { top:-2px; left:-2px; border-right:0; border-bottom:0; }
.about-tech__frame .c2 { top:-2px; right:-2px; border-left:0; border-bottom:0; }
.about-tech__frame .c3 { bottom:-2px; left:-2px; border-right:0; border-top:0; }
.about-tech__frame .c4 { bottom:-2px; right:-2px; border-left:0; border-top:0; }
.about-tech__pulse { position:absolute; top:18px; right:18px; display:flex; align-items:center; gap:8px;
  font-size:var(--text-xs); color:#fff; background:rgba(252,63,30,0.85); padding:6px 12px; border-radius:999px; }
.about-tech__pulse i { width:8px; height:8px; border-radius:50%; background:#fff; display:inline-block; animation: pulseDot 1.4s infinite; }
@keyframes pulseDot { 0%,100%{ opacity:.3 } 50%{ opacity:1 } }

/* ───────────────────────────────────────────────────────────────
   6) 资质认证 — 证书图廊
   ─────────────────────────────────────────────────────────────── */
.cert-gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
  margin-top: var(--space-12);
}
.cert-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #fff;
  box-shadow: 0 10px 26px rgba(0,0,0,0.08);
  border: 1px solid rgba(13,13,13,0.06);
  cursor: pointer;
  transition: transform .4s ease, box-shadow .4s ease;
  animation: certFloat 6s ease-in-out infinite;
}
.cert-card:nth-child(2n) { animation-delay: -3s; }
@keyframes certFloat { 0%,100%{ transform: translateY(0); } 50%{ transform: translateY(-8px); } }
.cert-card:hover { transform: translateY(-10px) scale(1.02); box-shadow: 0 26px 50px rgba(252,63,30,0.22); }
.cert-card__img { aspect-ratio: 1000 / 1414; overflow: hidden; background: var(--color-off-white); }
.cert-card__img img { width:100%; height:100%; object-fit: cover; transition: transform .6s ease; }
.cert-card:hover .cert-card__img img { transform: scale(1.06); }
.cert-card__cap {
  position: absolute; left:0; right:0; bottom:0;
  padding: 14px 16px;
  background: linear-gradient(0deg, rgba(13,13,13,0.92), transparent);
  color:#fff; font-size: var(--text-sm); font-weight:600;
  transform: translateY(100%); transition: transform .35s ease;
}
.cert-card:hover .cert-card__cap { transform: translateY(0); }
.cert-card__zoom {
  position:absolute; top:12px; right:12px;
  width:34px; height:34px; border-radius:50%;
  background: rgba(255,255,255,0.9); color: var(--color-dark);
  display:flex; align-items:center; justify-content:center; font-size:16px;
  opacity:0; transform: scale(.6); transition: all .3s ease;
}
.cert-card:hover .cert-card__zoom { opacity:1; transform: scale(1); }

/* 证书灯箱 */
.cert-lightbox {
  position: fixed; inset:0; z-index: 9999;
  background: rgba(5,6,8,0.92);
  display: flex; align-items: center; justify-content: center;
  padding: var(--space-8);
  opacity: 0; visibility: hidden; transition: opacity .3s ease;
}
.cert-lightbox.is-open { opacity:1; visibility:visible; }
.cert-lightbox img { max-width: 92vw; max-height: 88vh; border-radius: var(--radius-md); box-shadow: 0 30px 80px rgba(0,0,0,0.6); }
.cert-lightbox__close { position:absolute; top:24px; right:28px; color:#fff; font-size:34px; cursor:pointer; line-height:1; background:none; border:none; }
.cert-lightbox__cap { position:absolute; bottom:22px; left:0; right:0; text-align:center; color:rgba(255,255,255,0.85); font-size:var(--text-sm); }

/* ───────────────────────────────────────────────────────────────
   7) 应用领域（10 张卡）
   ─────────────────────────────────────────────────────────────── */
.app-grid { display:grid; grid-template-columns: repeat(5, 1fr); gap: var(--space-4); }
.app-card {
  position: relative;
  padding: var(--space-6);
  background: #fff; border-radius: var(--radius-lg);
  border: 1px solid rgba(13,13,13,0.05);
  text-align: center; overflow: hidden;
  transition: transform .35s ease, box-shadow .35s ease, border-color .35s ease;
}
.app-card::before {
  content:""; position:absolute; left:50%; top:0; transform: translateX(-50%);
  width: 0; height:3px; background: linear-gradient(90deg, var(--color-accent), var(--color-primary));
  transition: width .35s ease;
}
.app-card:hover { transform: translateY(-6px); box-shadow: 0 18px 38px rgba(0,0,0,0.12); border-color: rgba(252,63,30,0.4); }
.app-card:hover::before { width: 100%; }
.app-card__ico { font-size: 36px; margin-bottom: var(--space-3); display:block; transition: transform .35s ease; }
.app-card:hover .app-card__ico { transform: translateY(-4px) scale(1.08); }
.app-card__title { font-size: var(--text-base); font-weight: 600; margin: 0 0 4px; color: var(--color-dark); }
.app-card__desc { font-size: var(--text-xs); color: var(--color-gray-500); margin: 0; line-height:1.6; }

/* ───────────────────────────────────────────────────────────────
   8) 底部长文版块 — 结构化设计
   ─────────────────────────────────────────────────────────────── */
.seo-redesign { background: var(--color-off-white); }
.seo-hero {
  max-width: 920px; margin: 0 auto var(--space-14); text-align:center;
}
.seo-hero h2 {
  font-family: var(--font-display); font-size: clamp(1.9rem, 4vw, 3rem); font-weight:800;
  color: var(--color-dark); line-height:1.15; margin: 0 0 var(--space-5);
}
.seo-hero h2 .hl { color: var(--color-accent); }
.seo-hero p { color: var(--color-gray-700); font-size: var(--text-md); line-height:1.9; }
.seo-block { margin-bottom: var(--space-12); }
.seo-block__head {
  display:flex; align-items:center; gap: var(--space-4); margin-bottom: var(--space-6);
}
.seo-block__idx {
  flex:0 0 auto; width: 46px; height:46px; border-radius: 12px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-primary));
  color:#fff; font-family: var(--font-display); font-weight:800; font-size: 1.3rem;
  display:flex; align-items:center; justify-content:center;
  box-shadow: 0 8px 20px rgba(252,63,30,0.3);
}
.seo-block__head h3 { font-size: var(--text-xl); font-weight:700; color: var(--color-dark); margin:0; }
.seo-intro { color: var(--color-gray-700); line-height:1.9; margin: 0 0 var(--space-6); max-width: 860px; }

/* 系列迷你卡 */
.series-mini { display:grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-4); }
.series-mini__item {
  background:#fff; border-radius: var(--radius-md); padding: var(--space-5);
  border: 1px solid rgba(13,13,13,0.05); transition: all .3s ease;
}
.series-mini__item:hover { transform: translateY(-4px); box-shadow:0 14px 30px rgba(0,0,0,0.1); border-color: rgba(252,63,30,0.35); }
.series-mini__name { font-weight:700; color: var(--color-dark); font-size: var(--text-md); margin:0 0 4px; }
.series-mini__meta { font-size: var(--text-xs); color: var(--color-accent); font-weight:600; }
.series-mini__desc { font-size: var(--text-xs); color: var(--color-gray-500); line-height:1.6; margin: var(--space-2) 0 0; }

/* 技术优势列表 */
.tech-list { display:grid; grid-template-columns: repeat(2,1fr); gap: var(--space-4); }
.tech-list__item {
  display:flex; gap: var(--space-4); align-items:flex-start;
  background:#fff; border-radius: var(--radius-md); padding: var(--space-5);
  border:1px solid rgba(13,13,13,0.05); transition: all .3s ease;
}
.tech-list__item:hover { border-color: rgba(252,63,30,0.35); transform: translateX(4px); }
.tech-list__ico { flex:0 0 auto; width:42px; height:42px; border-radius:10px; display:flex; align-items:center; justify-content:center; font-size:20px; background: rgba(252,63,30,0.1); }
.tech-list__title { font-weight:700; color: var(--color-dark); margin:0 0 4px; font-size: var(--text-base); }
.tech-list__desc { font-size: var(--text-sm); color: var(--color-gray-700); line-height:1.7; margin:0; }

/* OEM 强调条 */
.oem-strip {
  display:flex; align-items:center; gap: var(--space-6); flex-wrap:wrap;
  background: linear-gradient(120deg, #14110f, #2a0d06);
  border-radius: var(--radius-xl); padding: var(--space-8) var(--space-10);
  color:#fff; position:relative; overflow:hidden;
}
.oem-strip::before { content:""; position:absolute; right:-60px; top:-60px; width:240px; height:240px; border-radius:50%; background: radial-gradient(closest-side, rgba(252,63,30,0.4), transparent); }
.oem-strip__text { position:relative; z-index:1; flex:1 1 420px; }
.oem-strip__text h3 { font-size: var(--text-2xl); font-weight:800; margin:0 0 8px; }
.oem-strip__text p { color: rgba(255,255,255,0.75); line-height:1.8; margin:0; font-size: var(--text-sm); }
.oem-strip__action { position:relative; z-index:1; }

/* 全球交付数据条 */
.global-bar { display:grid; grid-template-columns: repeat(3,1fr); gap: var(--space-5); margin-top: var(--space-6); }
.global-bar__item { text-align:center; padding: var(--space-6); background:#fff; border-radius: var(--radius-lg); border:1px solid rgba(13,13,13,0.05); }
.global-bar__num { font-family: var(--font-display); font-size: 2.4rem; font-weight:800; color: var(--color-accent); line-height:1; }
.global-bar__label { font-size: var(--text-sm); color: var(--color-gray-700); margin-top:6px; }

/* ───────────────────────────────────────────────────────────────
   9) 视频展示 — 高端科技感
   ─────────────────────────────────────────────────────────────── */
.video-section {
  position: relative;
  background:
    radial-gradient(1200px 600px at 50% -10%, rgba(252,63,30,0.16), transparent 60%),
    linear-gradient(180deg, #0c0c0e 0%, #111014 55%, #0a0a0c 100%);
  overflow: hidden;
  isolation: isolate;
}
/* tech grid backdrop */
.video-section::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 46px 46px;
  -webkit-mask-image: radial-gradient(circle at 50% 30%, #000, transparent 75%);
          mask-image: radial-gradient(circle at 50% 30%, #000, transparent 75%);
}
/* floating glow orbs */
.video-section::after {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(320px circle at 12% 20%, rgba(252,63,30,0.22), transparent 70%),
    radial-gradient(380px circle at 88% 80%, rgba(178,34,34,0.20), transparent 70%);
  animation: videoOrbFloat 14s ease-in-out infinite alternate;
}
@keyframes videoOrbFloat { from { transform: translate3d(0,0,0); } to { transform: translate3d(0,-26px,0); } }

.video-section .section-header { color: #fff; }
.video-section .section-header__tag {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: var(--text-xs); letter-spacing: 2px; text-transform: uppercase;
  color: #fff; padding: 6px 14px; border-radius: 999px;
  border: 1px solid rgba(252,63,30,0.45);
  background: rgba(252,63,30,0.08);
}
.video-section .section-header__tag::before {
  content: ""; width: 7px; height: 7px; border-radius: 50%;
  background: var(--color-accent); box-shadow: 0 0 10px var(--color-accent);
  animation: videoBlink 1.6s ease-in-out infinite;
}
@keyframes videoBlink { 0%,100%{opacity:1;} 50%{opacity:.25;} }
.video-section .section-header h2 { color: #fff; }
.video-section .section-header p { color: rgba(255,255,255,0.62); }

/* gradient-framed wrapper */
.video-section__wrapper {
  max-width: 1080px; margin: var(--space-12) auto 0;
  aspect-ratio: 16/9; position: relative; overflow: hidden;
  border-radius: 22px; cursor: pointer;
  background: #000;
  padding: 2px;
  background-image: linear-gradient(135deg, rgba(252,63,30,0.9), rgba(178,34,34,0.35) 45%, rgba(255,255,255,0.12) 70%, rgba(252,63,30,0.6));
  box-shadow: 0 40px 90px rgba(0,0,0,0.55), 0 0 0 1px rgba(255,255,255,0.04) inset;
  transition: transform .5s cubic-bezier(.2,.7,.2,1), box-shadow .5s;
}
.video-section__wrapper > * { border-radius: 20px; }
.video-section__wrapper:hover { transform: translateY(-6px); box-shadow: 0 50px 110px rgba(252,63,30,0.30), 0 0 0 1px rgba(255,255,255,0.06) inset; }
.video-section__wrapper img { width: 100%; height: 100%; object-fit: cover; display:block; }
/* darkening overlay for legibility (hidden once iframe is injected) */
.video-section__wrapper:not(:has(iframe))::before {
  content: ""; position: absolute; inset: 2px; z-index: 2; border-radius: 20px; pointer-events:none;
  background: linear-gradient(180deg, rgba(0,0,0,0.15) 0%, rgba(0,0,0,0.05) 40%, rgba(0,0,0,0.55) 100%);
}
/* moving scan line (hidden once iframe is injected) */
.video-section__wrapper:not(:has(iframe))::after {
  content: ""; position: absolute; left: 0; right: 0; top: -40%; height: 40%; z-index: 3; pointer-events:none;
  background: linear-gradient(180deg, transparent, rgba(252,63,30,0.30), transparent);
  animation: videoScan 4.5s linear infinite; opacity: .8;
}
@keyframes videoScan { 0% { top: -40%; } 100% { top: 120%; } }

/* HUD corner brackets */
.video-corner { position: absolute; width: 26px; height: 26px; z-index: 4; border: 2px solid rgba(255,255,255,0.55); pointer-events:none; opacity:.7; transition: border-color .4s, opacity .4s; }
.video-corner--tl { top: 14px; left: 14px; border-right:0; border-bottom:0; border-top-left-radius: 6px; }
.video-corner--tr { top: 14px; right: 14px; border-left:0; border-bottom:0; border-top-right-radius: 6px; }
.video-corner--bl { bottom: 14px; left: 14px; border-right:0; border-top:0; border-bottom-left-radius: 6px; }
.video-corner--br { bottom: 14px; right: 14px; border-left:0; border-top:0; border-bottom-right-radius: 6px; }
.video-section__wrapper:hover .video-corner { border-color: var(--color-accent); opacity: 1; }

/* tech badge row */
.video-badges { position: absolute; left: 18px; bottom: 18px; z-index: 4; display:flex; gap:8px; flex-wrap:wrap; }
.video-badge { font-size: 11px; letter-spacing: .5px; color:#fff; padding: 5px 11px; border-radius: 999px;
  background: rgba(10,10,12,0.5); border:1px solid rgba(255,255,255,0.18); backdrop-filter: blur(4px); }

/* play button — concentric glowing pulse */
.video-play-btn {
  position: absolute; top: 50%; left: 50%; z-index: 5;
  width: 92px; height: 92px; border-radius: 50%;
  transform: translate(-50%, -50%);
  display: flex; align-items: center; justify-content: center;
  background: rgba(252,63,30,0.14);
  border: 1.5px solid rgba(252,63,30,0.9);
  cursor: pointer; transition: transform .4s, background .4s, box-shadow .4s;
  box-shadow: 0 0 0 0 rgba(252,63,30,0.55);
  animation: videoPulse 2.4s ease-out infinite;
}
@keyframes videoPulse {
  0%   { box-shadow: 0 0 0 0 rgba(252,63,30,0.55); }
  70%  { box-shadow: 0 0 0 26px rgba(252,63,30,0); }
  100% { box-shadow: 0 0 0 0 rgba(252,63,30,0); }
}
.video-play-btn::before { /* inner solid disc */
  content: ""; position: absolute; inset: 8px; border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent), var(--color-primary));
  box-shadow: 0 8px 24px rgba(252,63,30,0.45);
  transition: transform .4s;
}
.video-play-btn::after { /* triangle */
  content: ""; position: relative; z-index: 1;
  width: 0; height: 0; margin-left: 6px;
  border-style: solid; border-width: 13px 0 13px 21px;
  border-color: transparent transparent transparent #fff;
}
.video-section__wrapper:hover .video-play-btn { transform: translate(-50%,-50%) scale(1.08); background: rgba(252,63,30,0.22); }
.video-section__wrapper:hover .video-play-btn::before { transform: scale(1.05); }

/* ───────────────────────────────────────────────────────────────
   响应式
   ─────────────────────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .series-grid, .adv-grid, .cert-gallery { grid-template-columns: repeat(2, 1fr); }
  .app-grid { grid-template-columns: repeat(3, 1fr); }
  .series-mini, .tech-list, .global-bar { grid-template-columns: repeat(2, 1fr); }
  .about-tech__grid { grid-template-columns: 1fr; gap: var(--space-10); }
}
@media (max-width: 640px) {
  .hero-carousel { min-height: 540px; }
  .hc-content { padding: 0 var(--space-5); }
  .hc-prev { left: var(--space-3); } .hc-next { right: var(--space-3); }
  .hc-scroll { display:none; }
  .series-grid, .adv-grid, .cert-gallery, .app-grid,
  .series-mini, .tech-list, .global-bar { grid-template-columns: 1fr; }
  .about-stats { grid-template-columns: repeat(3,1fr); gap: 8px; }
  .about-stat { padding: 16px 6px; text-align: center; border-radius: 12px; }
  .about-stat__num { font-size: 1.6rem; line-height: 1.1; }
  .about-stat__label { font-size: 11px; text-align: center; line-height: 1.35; margin-top: 4px; letter-spacing: .02em; }
  .about-tech__orb--1 { width:200px; height:200px; left:-40px; top:-60px; }
  .about-tech__orb--2 { width:180px; height:180px; right:-30px; bottom:-50px; }
  .marquee__card { flex-basis: 260px; width: 260px; }
  .video-play-btn { width: 70px; height: 70px; }
  .video-section__wrapper { margin-top: var(--space-9); }
}