/* ============================================================
   CC Audio — Apple-inspired design system
   Palette: Apple (near-black #1D1D1F, gray #6E6E73, bg #F5F5F7, blue #0066CC)
   ============================================================ */
:root {
  --black: #1D1D1F;
  --gray: #6E6E73;
  --gray-light: #86868B;
  --bg: #FFFFFF;
  --bg-gray: #F5F5F7;
  --bg-dark: #101012;
  --link: #0066CC;
  --border: rgba(0,0,0,0.1);
  --nav-h: 52px;
  --radius: 18px;
  --shadow: 0 20px 60px rgba(0,0,0,0.12);
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Segoe UI", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--black);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }
.container { max-width: 1100px; margin: 0 auto; padding: 0 22px; }

/* ---------- Nav ---------- */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: var(--nav-h);
  background: rgba(255,255,255,0.82);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 0.5px solid var(--border);
}
.nav-inner {
  max-width: 1100px; height: 100%; margin: 0 auto; padding: 0 22px;
  display: flex; align-items: center; justify-content: space-between;
}
.nav-logo { display: flex; align-items: center; gap: 9px; font-size: 17px; font-weight: 600; color: var(--black); letter-spacing: -0.3px; }
.nav-logo:hover { text-decoration: none; }
.nav-logo svg { display: block; }
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a {
  font-size: 13px; color: var(--black); padding: 6px 12px; border-radius: 20px;
  opacity: 0.85; transition: all 0.3s;
}
.nav-links a:hover { background: var(--bg-gray); opacity: 1; text-decoration: none; }
.lang-toggle {
  font-size: 12px; font-weight: 600; padding: 5px 14px; border-radius: 20px;
  border: 1px solid rgba(0,0,0,0.2); background: transparent; cursor: pointer;
  color: var(--black); margin-left: 8px; transition: all 0.3s;
}
.lang-toggle:hover { background: var(--black); color: #fff; border-color: var(--black); }
.nav-cta {
  font-size: 13px; font-weight: 500; padding: 6px 16px; border-radius: 20px;
  background: var(--link); color: #fff; margin-left: 8px; transition: background 0.3s;
}
.nav-cta:hover { background: #0077ED; text-decoration: none; }
.hamburger { display: none; flex-direction: column; gap: 4px; cursor: pointer; padding: 6px; background: none; border: none; }
.hamburger span { width: 20px; height: 2px; background: var(--black); border-radius: 2px; }
.mobile-menu {
  display: none; position: fixed; top: var(--nav-h); left: 0; right: 0; z-index: 999;
  background: rgba(255,255,255,0.97); backdrop-filter: blur(20px);
  border-bottom: 0.5px solid var(--border); padding: 10px 24px 22px;
  flex-direction: column;
}
.mobile-menu.open { display: flex; }
.mobile-menu a { font-size: 17px; color: var(--black); padding: 13px 0; border-bottom: 0.5px solid var(--border); }
.mobile-menu a:last-child { border-bottom: none; }

/* ---------- Hero ---------- */
.hero { padding: calc(var(--nav-h) + 70px) 0 80px; text-align: center; background: var(--bg); }
.hero h1 {
  font-size: clamp(44px, 7vw, 76px); font-weight: 700; letter-spacing: -2.5px; line-height: 1.05;
  background: linear-gradient(180deg, #000 0%, #3a3a3e 100%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.hero h1 .accent { display: block; }
.hero .sub { margin-top: 18px; font-size: clamp(18px, 2.4vw, 26px); color: var(--gray); font-weight: 500; letter-spacing: -0.4px; }
.hero .desc { margin: 16px auto 0; max-width: 640px; font-size: 15px; color: var(--gray-light); }
.hero-actions { margin-top: 34px; display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.btn {
  display: inline-block; padding: 12px 26px; border-radius: 980px;
  font-size: 15px; font-weight: 500; transition: all 0.3s;
}
.btn-primary { background: var(--link); color: #fff; }
.btn-primary:hover { background: #0077ED; text-decoration: none; }
.btn-ghost { background: transparent; color: var(--link); }
.btn-ghost:hover { text-decoration: underline; }
.hero-media { margin-top: 60px; border-radius: 24px; overflow: hidden; box-shadow: var(--shadow); }
.hero-media img { width: 100%; height: auto; }

/* ---------- Sections ---------- */
.section { padding: 90px 0; }
.section-gray { background: var(--bg-gray); }
.section-dark { background: var(--bg-dark); color: #fff; }
.eyebrow { font-size: 13px; font-weight: 600; color: var(--link); text-transform: uppercase; letter-spacing: 1.5px; }
.section h2 { font-size: clamp(32px, 4.5vw, 52px); font-weight: 700; letter-spacing: -1.5px; margin-top: 8px; }
.section .lead { margin-top: 14px; font-size: clamp(16px, 2vw, 20px); color: var(--gray); max-width: 640px; }
.section.center { text-align: center; }
.section.center .lead { margin-left: auto; margin-right: auto; }

/* ---------- Category cards ---------- */
.cat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 50px; }
.cat-card {
  position: relative; border-radius: var(--radius); overflow: hidden; aspect-ratio: 4/3;
  background: var(--bg-gray); display: block; transition: transform 0.45s cubic-bezier(0.4,0,0.2,1);
}
.cat-card:hover { transform: scale(1.03); text-decoration: none; }
.cat-card img { width: 100%; height: 100%; object-fit: cover; }
.cat-card .cat-label {
  position: absolute; left: 16px; bottom: 14px; background: rgba(255,255,255,0.92);
  backdrop-filter: blur(10px); padding: 8px 16px; border-radius: 980px;
  font-size: 14px; font-weight: 600; color: var(--black);
}
.cat-card .cat-count { position: absolute; right: 16px; bottom: 14px; color: rgba(255,255,255,0.95); font-size: 12px; font-weight: 500; text-shadow: 0 1px 4px rgba(0,0,0,0.4); }

/* ---------- Product grid ---------- */
.prod-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 18px; margin-top: 50px; }
.prod-card {
  background: var(--bg); border-radius: var(--radius); overflow: hidden; border: 0.5px solid var(--border);
  transition: all 0.4s cubic-bezier(0.4,0,0.2,1);
}
.prod-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: transparent; }
.prod-card .thumb { aspect-ratio: 1/1; background: var(--bg-gray); overflow: hidden; display: flex; align-items: center; justify-content: center; }
.prod-card .thumb img { width: 100%; height: 100%; object-fit: contain; transition: transform 0.5s; }
.prod-card:hover .thumb img { transform: scale(1.06); }
.prod-card .info { padding: 16px 18px 18px; }
.prod-card .cat { font-size: 11px; font-weight: 600; color: var(--gray-light); text-transform: uppercase; letter-spacing: 0.6px; }
.prod-card h3 { font-size: 16px; font-weight: 600; margin-top: 5px; letter-spacing: -0.2px; }
.prod-card .model { font-size: 13px; color: var(--gray); margin-top: 3px; }
.prod-card .more { font-size: 13px; color: var(--link); margin-top: 10px; display: inline-block; }

/* ---------- Feature blocks ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; margin-top: 50px; }
.feature {
  background: var(--bg); border-radius: var(--radius); padding: 34px;
  border: 0.5px solid var(--border); transition: transform 0.4s;
}
.feature:hover { transform: translateY(-3px); }
.feature .icon { font-size: 30px; }
.feature h3 { font-size: 19px; font-weight: 600; margin-top: 14px; }
.feature p { font-size: 14px; color: var(--gray); margin-top: 8px; }

/* ---------- Stats ---------- */
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 50px; }
.stat { text-align: center; }
.stat .num { font-size: clamp(40px, 5vw, 60px); font-weight: 700; letter-spacing: -2px; }
.stat .lbl { font-size: 14px; color: var(--gray); margin-top: 4px; }

/* ---------- Brands ---------- */
.brand-wall { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; margin-top: 44px; }
.brand-pill {
  font-size: 14px; font-weight: 600; color: var(--gray); background: var(--bg);
  border: 0.5px solid var(--border); border-radius: 980px; padding: 10px 22px; transition: all 0.3s;
}
.brand-pill:hover { color: var(--black); border-color: var(--black); transform: translateY(-2px); }

/* ---------- Product line blocks (Apple style) ---------- */
.line-block { padding: 90px 0; }
.line-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }
.line-copy .line-icon { font-size: 34px; }
.line-copy h2 { font-size: clamp(36px, 5vw, 56px); font-weight: 700; letter-spacing: -2px; margin-top: 10px; }
.line-tag { font-size: clamp(17px, 2vw, 21px); color: var(--gray); margin-top: 12px; max-width: 440px; }
.line-dark .line-tag { color: #a1a1a6; }
.line-count { font-size: 13px; font-weight: 600; color: var(--gray-light); margin-top: 14px; text-transform: uppercase; letter-spacing: 1px; }
.line-dark .line-count { color: #86868b; }
.line-links { margin-top: 24px; }
.line-links .btn-ghost { font-size: 16px; padding-left: 0; }
.line-media img { width: 100%; border-radius: 24px; box-shadow: 0 30px 80px rgba(0,0,0,0.18); }
.line-media { display: flex; align-items: center; justify-content: center; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 18px; margin-top: 44px; }
.contact-card { background: var(--bg); border-radius: var(--radius); padding: 26px; border: 0.5px solid var(--border); }
.contact-card h4 { font-size: 15px; font-weight: 600; }
.contact-card p { font-size: 13.5px; color: var(--gray); margin-top: 8px; line-height: 1.7; }
.contact-card a { font-size: 13.5px; }

/* ---------- Footer ---------- */
footer { background: var(--bg-gray); padding: 40px 0 50px; font-size: 12px; color: var(--gray); }
.footer-grid { display: flex; flex-wrap: wrap; gap: 40px; justify-content: space-between; }
.footer-col h5 { font-size: 12px; font-weight: 600; color: var(--black); margin-bottom: 12px; }
.footer-col a, .footer-col p { display: block; color: var(--gray); margin: 6px 0; font-size: 12px; }
.footer-col a:hover { color: var(--black); }
.footer-bottom { margin-top: 40px; padding-top: 20px; border-top: 0.5px solid var(--border); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }

/* ---------- Products page ---------- */
.page-hero { padding: calc(var(--nav-h) + 60px) 0 30px; }
.filter-bar { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 26px; }
.filter-chip {
  font-size: 13px; font-weight: 500; padding: 7px 16px; border-radius: 980px;
  border: 0.5px solid var(--border); background: var(--bg); color: var(--black); cursor: pointer; transition: all 0.25s;
}
.filter-chip:hover { border-color: var(--black); }
.filter-chip.active { background: var(--black); color: #fff; border-color: var(--black); }
.result-info { font-size: 13px; color: var(--gray); margin-top: 18px; }

/* ---------- Product detail ---------- */
.detail-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; padding: calc(var(--nav-h) + 50px) 0 70px; }
.gallery-main { aspect-ratio: 1/1; background: var(--bg-gray); border-radius: var(--radius); overflow: hidden; display: flex; align-items: center; justify-content: center; }
.gallery-main img { width: 100%; height: 100%; object-fit: contain; }
.gallery-thumbs { display: flex; gap: 10px; margin-top: 12px; flex-wrap: wrap; }
.gallery-thumbs img { width: 64px; height: 64px; object-fit: cover; border-radius: 10px; cursor: pointer; border: 2px solid transparent; opacity: 0.75; }
.gallery-thumbs img.active { border-color: var(--link); opacity: 1; }
.detail-info .cat { font-size: 12px; font-weight: 600; color: var(--link); text-transform: uppercase; letter-spacing: 1px; }
.detail-info h1 { font-size: clamp(28px, 3.5vw, 40px); font-weight: 700; letter-spacing: -1px; margin-top: 10px; }
.detail-info .model { font-size: 16px; color: var(--gray); margin-top: 6px; }
.detail-info .actions { display: flex; gap: 12px; margin-top: 26px; flex-wrap: wrap; }
.detail-desc { margin-top: 30px; }
.detail-desc h3 { font-size: 17px; font-weight: 600; margin-bottom: 10px; }
.detail-desc p { font-size: 14.5px; color: var(--gray); white-space: pre-line; }
.spec-imgs { display: grid; grid-template-columns: 1fr; gap: 14px; margin-top: 16px; }
.spec-imgs img { border-radius: 12px; border: 0.5px solid var(--border); }

/* ---------- About ---------- */
.about-story { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }
.about-story p { font-size: 15px; color: var(--gray); margin-top: 14px; }

/* ---------- Misc ---------- */
.fade-up { opacity: 0; transform: translateY(26px); transition: opacity 0.7s ease, transform 0.7s ease; }
.fade-up.visible { opacity: 1; transform: none; }
.whatsapp-fab {
  position: fixed; right: 22px; bottom: 22px; z-index: 900; width: 56px; height: 56px;
  border-radius: 50%; background: #25D366; display: flex; align-items: center; justify-content: center;
  box-shadow: 0 6px 20px rgba(37,211,102,0.4); transition: transform 0.3s;
}
.whatsapp-fab:hover { transform: scale(1.08); }
.breadcrumb { font-size: 13px; color: var(--gray); margin-bottom: 16px; }
.breadcrumb a { color: var(--gray); }
.loading { text-align: center; padding: 80px 0; color: var(--gray); }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .cat-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-grid { grid-template-columns: 1fr; }
  .detail-layout { grid-template-columns: 1fr; gap: 30px; }
  .about-story { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr; gap: 30px; }
  .line-inner { grid-template-columns: 1fr; gap: 30px; }
}
@media (max-width: 560px) {
  .cat-grid { grid-template-columns: 1fr; }
  .section { padding: 60px 0; }
}

/* ---------- Nav search ---------- */
.nav-search { display: flex; align-items: center; padding: 6px; border-radius: 50%; color: var(--black); margin-left: 4px; }
.nav-search:hover { background: var(--bg-gray); text-decoration: none; }

/* ============================================================
   设备模式 (device-mode.js)
   auto = 默认响应式 (媒体查询) | mobile/desktop = 强制
   ============================================================ */
/* ---- 强制手机版 (即使屏幕是电脑) ---- */
html.device-mobile .nav-links { display: none; }
html.device-mobile .hamburger { display: flex; }
html.device-mobile .mobile-menu.open { display: flex; }
html.device-mobile .container { padding: 0 16px; }
html.device-mobile .hero { padding: calc(var(--nav-h) + 46px) 0 54px; }
html.device-mobile .hero h1 { font-size: 40px; letter-spacing: -1.5px; }
html.device-mobile .section { padding: 54px 0; }
html.device-mobile .line-block { padding: 60px 0; }
html.device-mobile .line-inner { grid-template-columns: 1fr; gap: 26px; }
html.device-mobile .line-copy h2 { font-size: 34px; }
html.device-mobile .line-media img { border-radius: 16px; }
html.device-mobile .cat-grid { grid-template-columns: 1fr; }
html.device-mobile .cat-card { aspect-ratio: 16/9; }
html.device-mobile .feature-grid { grid-template-columns: 1fr; }
html.device-mobile .prod-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
html.device-mobile .prod-card .info { padding: 12px 14px 14px; }
html.device-mobile .prod-card h3 { font-size: 14px; }
html.device-mobile .prod-card .cat { font-size: 10px; }
html.device-mobile .detail-layout { grid-template-columns: 1fr; gap: 26px; padding-top: calc(var(--nav-h) + 34px); }
html.device-mobile .stats { grid-template-columns: 1fr; gap: 26px; }
html.device-mobile .about-story { grid-template-columns: 1fr; }
html.device-mobile .filter-bar { flex-wrap: nowrap; overflow-x: auto; -webkit-overflow-scrolling: touch; padding-bottom: 6px; scrollbar-width: none; }
html.device-mobile .filter-bar::-webkit-scrollbar { display: none; }
html.device-mobile .filter-chip { flex: none; }
html.device-mobile .search-input { font-size: 16px; padding: 15px 46px 15px 18px; }
html.device-mobile .brand-wall { gap: 8px; }
html.device-mobile .brand-pill { font-size: 12px; padding: 8px 14px; }

/* ---- 强制电脑版 (即使屏幕是手机) ---- */
html.device-desktop .hamburger { display: none !important; }
html.device-desktop .nav-links { display: flex !important; }
html.device-desktop .mobile-menu { display: none !important; }
html.device-desktop .cat-grid { grid-template-columns: repeat(3, 1fr) !important; }
html.device-desktop .feature-grid { grid-template-columns: repeat(2, 1fr) !important; }
html.device-desktop .detail-layout { grid-template-columns: 1fr 1fr !important; }
html.device-desktop .line-inner { grid-template-columns: 1fr 1fr !important; }
html.device-desktop .about-story { grid-template-columns: 1fr 1fr !important; }
html.device-desktop .stats { grid-template-columns: repeat(3, 1fr) !important; }
html.device-desktop .prod-grid { grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)) !important; }
html.device-desktop .container { max-width: 1100px !important; }

/* ---- 平板专属微调 (auto 识别出 tablet 时) ---- */
html.device-tablet .cat-grid { grid-template-columns: repeat(2, 1fr); }
html.device-tablet .prod-grid { grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 14px; }
html.device-tablet .feature-grid { grid-template-columns: repeat(2, 1fr); }
html.device-tablet .container { padding: 0 20px; }
html.device-tablet .line-inner { gap: 32px; }

/* ---- 切换按钮 ---- */
.device-switch { min-width: 52px; text-align: center; }
.device-switch-full { display: flex; align-items: center; justify-content: space-between; }

/* ============================================================
   电影感升级 (Apple style) — 视差/动效/轮播/横幅
   ============================================================ */
/* ---- 电影感 Hero ---- */
.hero-cine {
  position: relative; min-height: 92vh; display: flex; align-items: center; justify-content: center;
  background: #000; overflow: hidden; text-align: center; padding: calc(var(--nav-h) + 40px) 0 60px;
}
.hero-cine .hero-bg { position: absolute; inset: -12% 0; z-index: 0; will-change: transform; }
.hero-cine .hero-bg img { width: 100%; height: 100%; object-fit: cover; opacity: .55; }
.hero-cine .hero-bg .kenburns { animation: kb 22s ease-in-out infinite alternate; }
@keyframes kb { from { transform: scale(1); } to { transform: scale(1.14); } }
.hero-cine .hero-overlay {
  position: absolute; inset: 0; z-index: 1;
  background: radial-gradient(ellipse at 50% 30%, rgba(0,0,0,.35) 0%, rgba(0,0,0,.72) 70%, #000 100%);
}
.hero-cine .container { position: relative; z-index: 2; }
.hero-cine h1 {
  font-size: clamp(46px, 7.5vw, 84px); font-weight: 700; letter-spacing: -3px; line-height: 1.04;
  color: #fff; text-shadow: 0 4px 40px rgba(0,0,0,.5);
  background: linear-gradient(180deg, #fff 20%, #b8b8bd 90%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.hero-cine .sub { color: #d2d2d7; font-size: clamp(17px, 2.2vw, 24px); margin-top: 16px; font-weight: 500; text-shadow: 0 2px 20px rgba(0,0,0,.4); }
.hero-cine .desc { color: #a1a1a6; margin-top: 14px; max-width: 620px; margin-left: auto; margin-right: auto; font-size: 15px; }
.hero-cine .btn-primary { background: var(--link); }
.hero-cine .btn-ghost { color: #2997ff; }
.hero-cine .hero-media { margin-top: 44px; position: relative; z-index: 2; }

/* ---- 动感声波 (GIF感) ---- */
.eq { display: flex; gap: 5px; align-items: flex-end; justify-content: center; height: 46px; margin-bottom: 22px; }
.eq span { width: 5px; border-radius: 3px; background: linear-gradient(180deg, #C8A96E, #0066CC); animation: eqb 1.1s ease-in-out infinite; }
.eq span:nth-child(2) { animation-delay: .12s; } .eq span:nth-child(3) { animation-delay: .24s; }
.eq span:nth-child(4) { animation-delay: .36s; } .eq span:nth-child(5) { animation-delay: .48s; }
.eq span:nth-child(6) { animation-delay: .6s; } .eq span:nth-child(7) { animation-delay: .72s; }
.eq span:nth-child(8) { animation-delay: .84s; }
@keyframes eqb { 0%, 100% { height: 10px; } 50% { height: 42px; } }

/* ---- 滚动渐显 (方向) ---- */
.reveal { opacity: 0; transition: opacity .8s ease, transform .8s cubic-bezier(.2,.65,.25,1); will-change: transform, opacity; }
.reveal-up { transform: translateY(44px); }
.reveal-left { transform: translateX(-56px); }
.reveal-right { transform: translateX(56px); }
.reveal-zoom { transform: scale(.9); }
.reveal.visible { opacity: 1; transform: none; }
.stagger > * { opacity: 0; transform: translateY(36px); transition: opacity .7s ease, transform .7s cubic-bezier(.2,.65,.25,1); }
.stagger.visible > * { opacity: 1; transform: none; }
.stagger.visible > *:nth-child(1) { transition-delay: .05s; }
.stagger.visible > *:nth-child(2) { transition-delay: .12s; }
.stagger.visible > *:nth-child(3) { transition-delay: .19s; }
.stagger.visible > *:nth-child(4) { transition-delay: .26s; }
.stagger.visible > *:nth-child(5) { transition-delay: .33s; }
.stagger.visible > *:nth-child(6) { transition-delay: .4s; }

/* ---- 产品线区块: 视差+悬浮 ---- */
.line-block { position: relative; overflow: hidden; }
.line-media { position: relative; }
.line-media .parallax-img { width: 100%; border-radius: 24px; box-shadow: 0 30px 80px rgba(0,0,0,.2); transition: transform .8s cubic-bezier(.2,.65,.25,1); will-change: transform; }
.line-block:hover .parallax-img { transform: scale(1.03); }
.line-count { display: inline-block; background: rgba(0,0,0,.06); border-radius: 99px; padding: 5px 14px; margin-top: 16px; }
.line-dark .line-count { background: rgba(255,255,255,.1); }

/* ---- 横幅展示区 (Apple showcase) ---- */
.showcase { position: relative; min-height: 70vh; display: flex; align-items: center; overflow: hidden; }
.showcase .showcase-bg { position: absolute; inset: -12% 0; will-change: transform; }
.showcase .showcase-bg img { width: 100%; height: 100%; object-fit: cover; opacity: .6; }
.showcase .showcase-overlay {
  position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(180deg, rgba(16,16,18,.6), rgba(16,16,18,.85));
}
.showcase .container { position: relative; z-index: 2; text-align: center; color: #fff; }
.showcase h2 { color: #fff; }
.showcase .lead { color: #a1a1a6; margin: 14px auto 0; max-width: 560px; }

/* ---- 横向产品轮播 (Apple carousel) ---- */
.prod-scroll { display: flex; gap: 18px; overflow-x: auto; scroll-snap-type: x mandatory; padding: 14px 4px 24px; scrollbar-width: none; }
.prod-scroll::-webkit-scrollbar { display: none; }
.prod-scroll .prod-card { flex: 0 0 290px; scroll-snap-align: start; }
.carousel-wrap { position: relative; }
.carousel-btn {
  position: absolute; top: 38%; z-index: 5; width: 42px; height: 42px; border-radius: 50%;
  background: rgba(255,255,255,.9); border: .5px solid rgba(0,0,0,.1); cursor: pointer;
  font-size: 18px; color: var(--black); box-shadow: 0 4px 14px rgba(0,0,0,.12); transition: transform .25s;
}
.carousel-btn:hover { transform: scale(1.1); }
.carousel-btn.prev { left: -8px; }
.carousel-btn.next { right: -8px; }

/* ---- LED 脉动光效 ---- */
.pulse-glow { animation: pulseGlow 3.2s ease-in-out infinite; border-radius: 24px; }
@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0,102,204,0); }
  50% { box-shadow: 0 0 60px 6px rgba(0,102,204,.35); }
}
@media (max-width: 560px) {
  .hero-cine { min-height: 78vh; padding-top: calc(var(--nav-h) + 30px); }
  .showcase { min-height: 52vh; }
  .prod-scroll .prod-card { flex: 0 0 240px; }
  .carousel-btn { display: none; }
}

/* 页脚低调工具入口 */
.footer-tool { color: var(--gray); font-size: 12px; text-decoration: none; opacity: .75; transition: opacity .25s; }
.footer-tool:hover { opacity: 1; color: var(--black); text-decoration: underline; }