/* ===== CMC Tech 芯材芯 官网样式 - 深色科技风 ===== */
:root {
  --bg0: #04060f;
  --bg1: #070b1e;
  --panel: rgba(13, 19, 48, 0.62);
  --panel-solid: #0c1230;
  --line: rgba(90, 120, 255, 0.16);
  --line-strong: rgba(90, 130, 255, 0.35);
  --blue: #3d6bff;
  --cyan: #4fd8ff;
  --gold: #d9b23c;
  --text: #e8ecf8;
  --muted: #93a0bf;
  --radius: 14px;
  --glow: 0 0 24px rgba(61, 107, 255, 0.25);
  --maxw: 1180px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(900px 500px at 85% -5%, rgba(61, 107, 255, 0.14), transparent 60%),
    radial-gradient(700px 420px at -10% 30%, rgba(79, 216, 255, 0.07), transparent 60%),
    var(--bg0);
  line-height: 1.7;
}

/* 细网格纹理 */
body::before {
  content: ""; position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background-image:
    linear-gradient(rgba(90, 120, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(90, 120, 255, 0.045) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(180deg, rgba(0,0,0,.9), rgba(0,0,0,.35) 60%, rgba(0,0,0,.15));
  -webkit-mask-image: linear-gradient(180deg, rgba(0,0,0,.9), rgba(0,0,0,.35) 60%, rgba(0,0,0,.15));
}

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

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ===== Header ===== */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(4, 6, 15, 0.82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  max-width: var(--maxw); margin: 0 auto; padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between;
  height: 70px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-logo { height: 40px; width: auto; }
.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-text .zh { font-size: 15px; font-weight: 700; letter-spacing: 6px; color: #fff; }
.brand-text .en { font-size: 10px; color: var(--gold); letter-spacing: 3px; font-weight: 600; }

.main-nav { display: flex; gap: 34px; align-items: center; }
.main-nav a {
  font-size: 14.5px; font-weight: 500; color: var(--muted);
  padding: 6px 2px; position: relative; letter-spacing: 1px;
}
.main-nav a::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: 0;
  height: 2px; background: linear-gradient(90deg, var(--blue), var(--cyan));
  transition: right .25s ease;
}
.main-nav a:hover::after, .main-nav a.active::after { right: 0; }
.main-nav a:hover, .main-nav a.active { color: #fff; }

.nav-toggle {
  display: none; background: none; border: none; cursor: pointer;
  width: 40px; height: 40px; position: relative;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
  content: ""; display: block; width: 22px; height: 2px;
  background: var(--text); position: absolute; left: 9px; transition: .2s;
}
.nav-toggle span { top: 19px; }
.nav-toggle span::before { top: -7px; left: 0; }
.nav-toggle span::after { top: 7px; left: 0; }

/* ===== Hero ===== */
.hero { position: relative; overflow: hidden; }
/* 封底同款霓虹斜线 */
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .5;
  background:
    linear-gradient(115deg, transparent 18%, rgba(61,107,255,.7) 18.12%, transparent 18.3%),
    linear-gradient(115deg, transparent 33%, rgba(79,216,255,.4) 33.1%, transparent 33.26%),
    linear-gradient(115deg, transparent 82%, rgba(61,107,255,.55) 82.1%, transparent 82.28%),
    linear-gradient(295deg, transparent 26%, rgba(61,107,255,.35) 26.1%, transparent 26.24%);
}
#particles { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.hero-inner {
  position: relative; max-width: var(--maxw); margin: 0 auto; padding: 84px 24px 48px;
  display: grid; grid-template-columns: 1.12fr 0.88fr; gap: 44px; align-items: center;
}
.hero-kicker {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12.5px; font-weight: 600; color: var(--cyan);
  background: rgba(79, 216, 255, 0.07); border: 1px solid rgba(79, 216, 255, 0.28);
  padding: 5px 16px; border-radius: 100px; margin-bottom: 24px;
  letter-spacing: 2px;
}
.hero-kicker::before {
  content: ""; width: 7px; height: 7px; border-radius: 50%;
  background: var(--cyan); box-shadow: 0 0 8px var(--cyan);
}
.hero h1 {
  font-size: clamp(30px, 4.2vw, 46px); line-height: 1.3;
  font-weight: 800; color: #fff; margin-bottom: 18px;
}
.hero h1 .accent {
  background: linear-gradient(92deg, var(--cyan) 0%, var(--blue) 70%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub { font-size: 16.5px; color: var(--muted); max-width: 560px; margin-bottom: 32px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

.btn {
  display: inline-block; padding: 12px 32px; border-radius: 8px;
  font-size: 15px; font-weight: 600; transition: .2s; border: 1px solid transparent;
  letter-spacing: 1px;
}
.btn-primary {
  background: linear-gradient(120deg, var(--blue), #2a4ad4);
  color: #fff; box-shadow: 0 4px 22px rgba(61, 107, 255, 0.38);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(61, 107, 255, 0.55); }
.btn-ghost { border-color: var(--line-strong); color: var(--cyan); }
.btn-ghost:hover { background: rgba(61, 107, 255, 0.1); border-color: var(--cyan); }

/* 机台照片 HUD 边框 */
.hero-figure { position: relative; padding: 14px; }
.hero-figure::before, .hero-figure::after {
  content: ""; position: absolute; width: 46px; height: 46px; pointer-events: none;
}
.hero-figure::before {
  top: 0; left: 0;
  border-top: 2px solid var(--cyan); border-left: 2px solid var(--cyan);
}
.hero-figure::after {
  bottom: 0; right: 0;
  border-bottom: 2px solid var(--cyan); border-right: 2px solid var(--cyan);
}
.hero-figure img {
  width: 100%; max-height: 480px; object-fit: contain;
  border-radius: 10px; background: #fff;
  border: 1px solid var(--line-strong);
  box-shadow: 0 0 0 1px rgba(79, 216, 255, 0.08), 0 24px 60px rgba(0, 0, 0, 0.55), var(--glow);
}

.hero-stats {
  position: relative; max-width: var(--maxw); margin: 0 auto; padding: 10px 24px 64px;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px;
}
.stat-card {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px 22px; position: relative; overflow: hidden;
  backdrop-filter: blur(6px);
}
.stat-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--blue), var(--cyan), transparent 80%);
}
.stat-card b { display: block; font-size: 20px; color: var(--cyan); margin-bottom: 4px; letter-spacing: 1px; }
.stat-card span { font-size: 13.5px; color: var(--muted); }

/* ===== Sections ===== */
.section { padding: 88px 0; position: relative; }
.section.alt {
  background: linear-gradient(180deg, rgba(13, 19, 48, 0.5), rgba(13, 19, 48, 0.18));
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
}
.section-head { text-align: center; margin-bottom: 52px; }
.section-head .en {
  font-size: 12.5px; font-weight: 700; letter-spacing: 6px;
  color: var(--gold); text-transform: uppercase; display: block; margin-bottom: 10px;
}
.section-head h2 {
  font-size: clamp(24px, 3vw, 32px); color: #fff; font-weight: 800;
  display: inline-block; position: relative; padding-bottom: 14px;
}
.section-head h2::after {
  content: ""; position: absolute; left: 50%; transform: translateX(-50%);
  bottom: 0; width: 56px; height: 3px; border-radius: 2px;
  background: linear-gradient(90deg, var(--blue), var(--cyan));
  box-shadow: 0 0 12px rgba(79, 216, 255, 0.6);
}
.section-head p { color: var(--muted); margin-top: 14px; max-width: 640px; margin-left: auto; margin-right: auto; }

/* ===== About ===== */
.about-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 48px; align-items: center; }
.about-text p { color: #c3cce3; margin-bottom: 16px; font-size: 15.5px; text-align: justify; }
.about-points { display: grid; gap: 14px; }
.point {
  display: flex; gap: 14px; background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 18px 20px; transition: .25s;
}
.point:hover { border-color: var(--line-strong); box-shadow: var(--glow); transform: translateX(4px); }
.point-icon {
  flex: 0 0 42px; height: 42px; border-radius: 10px;
  background: linear-gradient(135deg, var(--blue), #1d2f8f);
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-size: 18px; font-weight: 700;
  box-shadow: 0 0 14px rgba(61, 107, 255, 0.4);
}
.point b { display: block; font-size: 15.5px; color: #fff; }
.point span { font-size: 13.5px; color: var(--muted); }

/* ===== Products ===== */
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.product-card {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; display: flex; flex-direction: column; position: relative;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.product-card::after {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  opacity: 0; transition: opacity .25s;
}
.product-card:hover {
  transform: translateY(-6px);
  border-color: var(--line-strong);
  box-shadow: 0 18px 46px rgba(0, 0, 0, 0.5), var(--glow);
}
.product-card:hover::after { opacity: 1; }
.product-thumb { height: 300px; overflow: hidden; background: #0e1548; position: relative; display: block; }
.product-thumb img {
  width: 100%; height: 100%; object-fit: cover; object-position: top center;
  transition: transform .4s ease;
}
.product-card:hover .product-thumb img { transform: scale(1.04); }
.product-body { padding: 20px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.product-body h3 { font-size: 17.5px; color: #fff; margin-bottom: 4px; }
.product-body .en-name { font-size: 12px; color: var(--gold); font-weight: 700; letter-spacing: 2px; margin-bottom: 10px; }
.product-body p { font-size: 13.5px; color: var(--muted); flex: 1; }
.product-link {
  margin-top: 16px; font-size: 14px; font-weight: 600; color: var(--cyan);
  display: inline-flex; align-items: center; gap: 6px; transition: gap .2s;
}
.product-link:hover { gap: 10px; text-shadow: 0 0 12px rgba(79, 216, 255, 0.7); }

/* ===== Why us ===== */
.why-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.why-card {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 24px; text-align: center; position: relative; overflow: hidden; transition: .25s;
}
.why-card::before {
  content: ""; position: absolute; inset: auto -30% -55% -30%; height: 70%;
  background: radial-gradient(closest-side, rgba(61, 107, 255, 0.18), transparent);
  pointer-events: none;
}
.why-card:hover { border-color: var(--line-strong); box-shadow: var(--glow); transform: translateY(-4px); }
.why-card .num {
  font-family: Consolas, "Courier New", monospace; font-size: 28px; font-weight: 700;
  color: var(--gold); display: block; margin-bottom: 10px; text-shadow: 0 0 18px rgba(217, 178, 60, 0.4);
}
.why-card b { display: block; font-size: 16.5px; color: #fff; margin-bottom: 8px; }
.why-card p { font-size: 13.5px; color: var(--muted); }

/* ===== Customers ===== */
.customer-grid {
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 22px;
}
.customer-card {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 18px 18px; display: flex; flex-direction: column; align-items: center; gap: 14px;
  transition: .25s; position: relative; overflow: hidden;
}
.customer-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  opacity: 0; transition: opacity .25s;
}
.customer-card:hover { border-color: var(--line-strong); box-shadow: var(--glow); transform: translateY(-4px); }
.customer-card:hover::before { opacity: 1; }
.customer-card img {
  height: 56px; width: auto; max-width: 100%; object-fit: contain;
  background: #fff; border-radius: 8px; padding: 8px 14px;
}
.customer-card span { font-size: 14.5px; font-weight: 600; color: var(--text); letter-spacing: 2px; }
.customer-card img.on-dark { background: #123a8f; }
.customer-card .text-logo {
  height: 56px; min-width: 120px; border-radius: 8px; padding: 8px 14px;
  background: #fff; color: #16388f; font-weight: 800; font-size: 20px; letter-spacing: 3px;
  display: flex; align-items: center; justify-content: center;
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
}

/* ===== Install map ===== */
.map-panel {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 10px; overflow: hidden;
}
#install-map { width: 100%; height: 580px; }
@media (max-width: 640px) {
  #install-map { height: 400px; }
}

/* ===== Contact ===== */
.contact-wrap {
  display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 40px;
  background:
    linear-gradient(115deg, transparent 12%, rgba(61,107,255,.5) 12.1%, transparent 12.25%),
    linear-gradient(115deg, transparent 88%, rgba(79,216,255,.35) 88.1%, transparent 88.24%),
    linear-gradient(135deg, #0a1034 0%, #131c56 100%);
  border: 1px solid var(--line-strong);
  border-radius: 20px; padding: 52px; color: #fff; overflow: hidden; position: relative;
  box-shadow: 0 0 60px rgba(61, 107, 255, 0.12) inset, var(--glow);
}
.contact-wrap::after {
  content: ""; position: absolute; right: -80px; top: -80px; width: 280px; height: 280px;
  border-radius: 50%; background: rgba(217, 178, 60, 0.1); filter: blur(4px);
}
.contact-info h2 { font-size: 26px; margin-bottom: 8px; }
.contact-info .en { color: var(--gold); font-size: 12.5px; letter-spacing: 5px; font-weight: 700; }
.contact-list { margin-top: 26px; display: grid; gap: 16px; }
.contact-list li { display: flex; gap: 12px; align-items: flex-start; font-size: 15px; }
.contact-list .ico {
  flex: 0 0 36px; height: 36px; border-radius: 9px; background: rgba(97, 134, 255, 0.14);
  border: 1px solid var(--line);
  display: flex; align-items: center; justify-content: center; font-size: 16px;
}
.contact-list a { color: var(--cyan); }
.contact-list a:hover { text-shadow: 0 0 12px rgba(79, 216, 255, 0.7); }
.contact-list small { display: block; color: rgba(255, 255, 255, 0.45); font-size: 12.5px; }
.contact-qr {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 12px; position: relative; z-index: 1;
}
.contact-qr img {
  width: 180px; height: 180px; border-radius: 12px; border: 1px solid var(--line-strong);
  box-shadow: 0 0 30px rgba(61, 107, 255, 0.3);
}
.contact-qr span { font-size: 13.5px; color: rgba(255, 255, 255, 0.75); }

/* ===== Footer ===== */
.site-footer {
  background: #030510; color: var(--muted);
  padding: 34px 0; font-size: 13.5px; border-top: 1px solid var(--line);
}
.footer-inner {
  max-width: var(--maxw); margin: 0 auto; padding: 0 24px;
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; align-items: center;
}
.footer-brand { color: #fff; font-weight: 700; letter-spacing: 2px; display: inline-flex; align-items: center; gap: 10px; }
.footer-brand img { height: 30px; width: auto; }

/* ===== Product detail pages ===== */
.page-hero {
  position: relative; overflow: hidden;
  background:
    linear-gradient(115deg, transparent 15%, rgba(61,107,255,.6) 15.1%, transparent 15.26%),
    linear-gradient(115deg, transparent 78%, rgba(79,216,255,.4) 78.1%, transparent 78.24%),
    linear-gradient(295deg, transparent 30%, rgba(61,107,255,.3) 30.1%, transparent 30.22%),
    linear-gradient(120deg, #060a22 0%, #101b56 60%, #2a1a5e 100%);
  color: #fff; padding: 66px 0 58px;
  border-bottom: 1px solid var(--line);
}
.page-hero .crumb { font-size: 13px; color: rgba(255, 255, 255, 0.55); margin-bottom: 14px; letter-spacing: 1px; }
.page-hero .crumb a:hover { color: #fff; text-decoration: underline; }
.page-hero h1 { font-size: clamp(26px, 3.4vw, 38px); line-height: 1.3; }
.page-hero .en-name { color: var(--gold); font-weight: 700; letter-spacing: 3px; margin-top: 10px; font-size: 13.5px; }

.detail-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 44px; align-items: start; }
.detail-text h2 {
  font-size: 21px; color: #fff; margin: 30px 0 12px;
  padding-left: 12px; border-left: 3px solid var(--cyan);
}
.detail-text h2:first-child { margin-top: 0; }
.detail-text p { color: #c3cce3; font-size: 15px; text-align: justify; }
.detail-text ul { display: grid; gap: 8px; margin-top: 6px; }
.detail-text ul li {
  position: relative; padding-left: 20px; font-size: 14.5px; color: #c3cce3;
}
.detail-text ul li::before {
  content: ""; position: absolute; left: 2px; top: 10px;
  width: 7px; height: 7px; border-radius: 2px;
  background: var(--cyan); box-shadow: 0 0 8px rgba(79, 216, 255, 0.7);
}
.adv-item { margin-bottom: 14px; }
.adv-item b {
  display: inline-block; font-size: 13px; color: var(--cyan);
  border: 1px solid rgba(79, 216, 255, 0.4); background: rgba(79, 216, 255, 0.06);
  padding: 2px 14px; border-radius: 100px; margin-bottom: 4px; letter-spacing: 1px;
}
.adv-item p { font-size: 14px; }

.leaflet-figure {
  border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  cursor: zoom-in; background: var(--panel-solid);
  transition: .25s;
}
.leaflet-figure:hover { border-color: var(--line-strong); box-shadow: var(--glow); }
.leaflet-figure figcaption {
  padding: 10px 14px; font-size: 13px; color: var(--muted);
  border-top: 1px solid var(--line); text-align: center; letter-spacing: 1px;
}
.leaflet-stack { display: grid; gap: 24px; position: sticky; top: 94px; }

.gallery-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.gallery-grid img {
  border-radius: 8px; border: 1px solid var(--line); cursor: zoom-in;
  transition: .2s; width: 100%;
}
.gallery-grid img:hover { transform: scale(1.03); border-color: var(--cyan); box-shadow: var(--glow); }

/* lightbox */
.lightbox {
  position: fixed; inset: 0; background: rgba(2, 4, 12, 0.94); z-index: 200;
  display: flex; align-items: center; justify-content: center; padding: 30px;
}
.lightbox[hidden] { display: none; }
.lightbox img { max-width: 92vw; max-height: 92vh; border-radius: 6px; }
.lightbox-close {
  position: absolute; top: 18px; right: 26px; color: #fff; font-size: 34px;
  background: none; border: none; cursor: pointer; line-height: 1;
}
.lightbox-nav {
  position: absolute; top: 50%; transform: translateY(-50%);
  background: rgba(97, 134, 255, 0.15); color: #fff; border: 1px solid var(--line-strong);
  cursor: pointer; font-size: 26px; width: 48px; height: 48px; border-radius: 50%;
}
.lightbox-nav:hover { background: rgba(97, 134, 255, 0.35); box-shadow: var(--glow); }
.lightbox-prev { left: 22px; }
.lightbox-next { right: 22px; }

.back-strip { margin-top: 44px; text-align: center; display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* reveal animation */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.visible { opacity: 1; transform: none; }

/* ===== Responsive ===== */
@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; padding-top: 52px; }
  .hero-figure { order: -1; max-width: 480px; margin: 0 auto; }
  .hero-figure img { max-height: 320px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .about-grid, .detail-layout, .contact-wrap { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .gallery-grid { grid-template-columns: repeat(3, 1fr); }
  .leaflet-stack { position: static; }
}
@media (max-width: 640px) {
  .main-nav {
    position: absolute; top: 70px; left: 0; right: 0;
    background: rgba(4, 6, 15, 0.97); border-bottom: 1px solid var(--line);
    flex-direction: column; gap: 0; padding: 10px 0; display: none;
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 12px 24px; width: 100%; }
  .nav-toggle { display: block; }
  .product-grid { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-wrap { padding: 32px 24px; }
  .section { padding: 60px 0; }
}
@media (max-width: 960px) {
  .customer-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 640px) {
  .customer-grid { grid-template-columns: repeat(2, 1fr); }
}