/* ============================================================
   俊木科技官网 — 半导体未来科技风格
   Jiangsu Junmu Semiconductor Technology Co., Ltd.
   ============================================================ */

:root {
  --bg-deep: #04080f;
  --bg-dark: #060c18;
  --bg-panel: rgba(10, 22, 42, 0.72);
  --bg-card: rgba(13, 28, 52, 0.55);
  --line: rgba(0, 212, 255, 0.16);
  --line-strong: rgba(0, 212, 255, 0.45);
  --cyan: #00d4ff;
  --blue: #2f7bff;
  --violet: #7b5cff;
  --gold: #ffc861;
  --text: #e8f2ff;
  --muted: #8da5c4;
  --dim: #5d7494;
  --glow: 0 0 24px rgba(0, 212, 255, 0.35);
  --radius: 14px;
  --font-display: 'Orbitron', 'Rajdhani', 'Microsoft YaHei', sans-serif;
  --font-body: 'Rajdhani', 'Noto Sans SC', 'Microsoft YaHei', 'PingFang SC', sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg-deep);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

::selection { background: rgba(0, 212, 255, 0.35); color: #fff; }

/* 滚动条 */
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg-deep); }
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--cyan), var(--blue));
  border-radius: 5px;
}

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

.container { width: min(1240px, 92%); margin: 0 auto; }

/* ============ 全局背景层 ============ */
.bg-grid {
  position: fixed; inset: 0; z-index: -3; pointer-events: none;
  background-image:
    linear-gradient(rgba(0, 212, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.04) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 30%, transparent 100%);
}
.bg-aurora {
  position: fixed; inset: 0; z-index: -4; pointer-events: none; overflow: hidden;
}
.bg-aurora::before, .bg-aurora::after {
  content: ''; position: absolute; border-radius: 50%; filter: blur(120px); opacity: .35;
  animation: auroraDrift 22s ease-in-out infinite alternate;
}
.bg-aurora::before {
  width: 60vw; height: 60vw; left: -18vw; top: -22vw;
  background: radial-gradient(circle, rgba(0, 90, 190, 0.5), transparent 65%);
}
.bg-aurora::after {
  width: 50vw; height: 50vw; right: -15vw; top: 28vh;
  background: radial-gradient(circle, rgba(90, 50, 200, 0.35), transparent 65%);
  animation-delay: -11s;
}
@keyframes auroraDrift {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to   { transform: translate3d(6vw, 8vh, 0) scale(1.15); }
}

/* ============ 顶部进度条 ============ */
#progressBar {
  position: fixed; top: 0; left: 0; height: 2px; width: 0; z-index: 1001;
  background: linear-gradient(90deg, var(--cyan), var(--violet));
  box-shadow: 0 0 12px rgba(0, 212, 255, 0.8);
  transition: width .1s linear;
}

/* ============ 导航栏 ============ */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  transition: background .35s, box-shadow .35s, backdrop-filter .35s;
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: rgba(5, 11, 22, 0.82);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 76px;
}
.brand { display: flex; align-items: center; gap: 14px; }
.brand-logo {
  height: 38px; width: auto; display: block;
  filter: drop-shadow(0 0 10px rgba(0,212,255,.4));
}
.footer-brand .brand-logo { height: 42px; }
.footer-brand .brand-sep, .footer-brand .brand-text { display: none; }
.brand-sep {
  width: 1px; height: 34px; flex: none; border-radius: 1px;
  background: linear-gradient(180deg, transparent, rgba(0,212,255,.6), transparent);
}
.brand-text { display: flex; flex-direction: column; gap: 4px; line-height: 1.05; }
.brand-text .cn {
  font-size: 18px; font-weight: 700; letter-spacing: .6px;
  color: #fff; white-space: nowrap;
}
.brand-text .en {
  font-size: 9px; letter-spacing: 1.1px; color: var(--cyan);
  font-family: var(--font-display); text-transform: uppercase;
  white-space: nowrap; opacity: .82;
}
.main-nav { display: flex; gap: 6px; align-items: center; }
.main-nav a {
  position: relative; padding: 8px 18px; font-size: 16px; font-weight: 500;
  color: var(--muted); letter-spacing: 1px; transition: color .25s;
  border-radius: 8px;
}
.main-nav a::after {
  content: ''; position: absolute; left: 18px; right: 18px; bottom: 2px; height: 2px;
  background: linear-gradient(90deg, var(--cyan), transparent);
  transform: scaleX(0); transform-origin: left; transition: transform .3s;
  border-radius: 2px;
}
.main-nav a:hover, .main-nav a.active { color: var(--text); }
.main-nav a:hover::after, .main-nav a.active::after { transform: scaleX(1); }
.nav-cta {
  margin-left: 14px; padding: 9px 22px !important;
  border: 1px solid var(--line-strong); border-radius: 999px !important;
  color: var(--cyan) !important; font-weight: 600;
  background: rgba(0, 212, 255, 0.06);
  transition: all .3s !important;
}
.nav-cta::after { display: none; }
.nav-cta:hover { background: rgba(0, 212, 255, 0.16); box-shadow: var(--glow); }

.nav-toggle {
  display: none; flex-direction: column; gap: 5px; cursor: pointer;
  background: none; border: none; padding: 8px;
}
.nav-toggle span {
  width: 24px; height: 2px; background: var(--cyan); border-radius: 2px;
  transition: all .3s;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============ Hero ============ */
.hero {
  position: relative; min-height: 100vh;
  display: flex; align-items: center;
  overflow: hidden;
}
.hero.sub { min-height: 52vh; padding-top: 76px; }
#particleCanvas {
  position: absolute; inset: 0; z-index: 1; pointer-events: none;
}
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
  background-size: cover; background-position: center;
  opacity: .22; filter: saturate(.6) brightness(.8);
}
.hero-bg::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(4,8,15,.55) 0%, rgba(4,8,15,.35) 45%, var(--bg-deep) 100%);
}
.hero-content { position: relative; z-index: 2; width: 100%; padding: 140px 0 100px 56px; }
.hero-tagline {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 7px 18px; border: 1px solid var(--line-strong); border-radius: 999px;
  font-size: 14px; letter-spacing: 3px; color: var(--cyan);
  background: rgba(0, 212, 255, 0.05); margin-bottom: 28px;
  animation: pulseBorder 3s ease-in-out infinite;
}
.hero-tagline .dot {
  width: 7px; height: 7px; border-radius: 50%; background: var(--cyan);
  box-shadow: 0 0 10px var(--cyan); animation: blink 1.6s infinite;
}
@keyframes blink { 50% { opacity: .25; } }
@keyframes pulseBorder {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0,212,255,.25); }
  50% { box-shadow: 0 0 18px 2px rgba(0,212,255,.18); }
}
.hero h1 {
  font-size: clamp(34px, 5.6vw, 68px); font-weight: 800; line-height: 1.18;
  letter-spacing: 2px; margin-bottom: 10px;
}
.hero h1 .grad {
  background: linear-gradient(95deg, #fff 10%, var(--cyan) 55%, var(--violet) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero .typed-line {
  font-family: var(--font-display); font-size: clamp(15px, 2vw, 22px);
  letter-spacing: 4px; color: var(--cyan); min-height: 34px; margin-bottom: 26px;
}
.typed-cursor { display: inline-block; width: 2px; height: 1em; background: var(--cyan);
  vertical-align: -2px; margin-left: 4px; animation: blink 1s infinite; }
.hero p.lead {
  max-width: 640px; color: var(--muted); font-size: 17.5px; margin-bottom: 42px;
}
.hero-actions { display: flex; gap: 18px; flex-wrap: wrap; }

.btn {
  position: relative; display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 36px; border-radius: 10px; font-size: 16px; font-weight: 600;
  letter-spacing: 2px; cursor: pointer; transition: all .3s; overflow: hidden;
  border: none;
}
.btn-primary {
  color: #02101e;
  background: linear-gradient(95deg, var(--cyan), #44a8ff);
  box-shadow: 0 0 28px rgba(0, 212, 255, 0.35);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 6px 36px rgba(0, 212, 255, 0.55); }
.btn-primary::after {
  content: ''; position: absolute; top: 0; left: -80%; width: 50%; height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255,255,255,.55), transparent);
  transform: skewX(-20deg); animation: sheen 3.2s infinite;
}
@keyframes sheen { 0% { left: -80%; } 55%, 100% { left: 130%; } }
.btn-ghost {
  color: var(--text); border: 1px solid var(--line-strong);
  background: rgba(0, 212, 255, 0.04);
}
.btn-ghost:hover { background: rgba(0, 212, 255, 0.12); box-shadow: var(--glow); transform: translateY(-3px); }

.scroll-hint {
  position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%);
  z-index: 2; display: flex; flex-direction: column; align-items: center; gap: 8px;
  color: var(--dim); font-size: 12px; letter-spacing: 3px;
}
.scroll-hint .mouse {
  width: 24px; height: 38px; border: 1.5px solid var(--dim); border-radius: 12px;
  position: relative;
}
.scroll-hint .mouse::after {
  content: ''; position: absolute; left: 50%; top: 7px; width: 3px; height: 7px;
  margin-left: -1.5px; border-radius: 2px; background: var(--cyan);
  animation: scrollWheel 1.8s infinite;
}
@keyframes scrollWheel {
  0% { transform: translateY(0); opacity: 1; }
  70% { transform: translateY(12px); opacity: 0; }
  100% { opacity: 0; }
}

/* 子页 Hero */
.hero.sub .hero-content { padding: 90px 0 60px 56px; }
.hero .hero-content::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0;
  margin: auto 0; height: 64%; width: 3px; border-radius: 2px;
  background: linear-gradient(180deg, rgba(0,212,255,0), var(--cyan), rgba(0,212,255,0));
  box-shadow: 0 0 14px rgba(0,212,255,.55);
}
.breadcrumb { font-size: 14px; color: var(--dim); letter-spacing: 2px; margin-bottom: 16px; }
.breadcrumb a:hover { color: var(--cyan); }
.breadcrumb .sep { margin: 0 8px; color: var(--line-strong); }

/* ============ Section 通用 ============ */
section.block { position: relative; padding: 96px 0; }
section.block.tight { padding: 70px 0; }
.section-head { text-align: center; margin-bottom: 60px; }
.section-head.left { text-align: left; }
.sec-kicker {
  display: inline-block; font-family: var(--font-display); font-size: 13px;
  letter-spacing: 5px; color: var(--cyan); text-transform: uppercase;
  margin-bottom: 14px; position: relative; padding: 0 46px;
}
.sec-kicker::before, .sec-kicker::after {
  content: ''; position: absolute; top: 50%; width: 32px; height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan));
}
.sec-kicker::before { left: 0; }
.sec-kicker::after { right: 0; transform: scaleX(-1); }
.section-head.left .sec-kicker { padding-left: 0; }
.section-head.left .sec-kicker::before { display: none; }
.sec-title { font-size: clamp(26px, 3.4vw, 40px); font-weight: 800; letter-spacing: 2px; }
.sec-title .hl { color: var(--cyan); text-shadow: 0 0 22px rgba(0,212,255,.5); }
.sec-sub { color: var(--muted); max-width: 720px; margin: 16px auto 0; font-size: 16.5px; }
.section-head.left .sec-sub { margin-left: 0; }

/* 科技感面板 / 卡片 */
.tech-card {
  position: relative; background: var(--bg-card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 34px 30px; overflow: hidden;
  transition: transform .35s, border-color .35s, box-shadow .35s;
  backdrop-filter: blur(6px);
}
.tech-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  opacity: 0; transition: opacity .35s;
}
.tech-card:hover {
  transform: translateY(-8px); border-color: var(--line-strong);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(0,212,255,.12), var(--glow);
}
.tech-card:hover::before { opacity: 1; }
.corner-card { clip-path: polygon(18px 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%, 0 18px); border-radius: 0; }

/* ============ 数据统计 ============ */
.stats-band {
  position: relative; padding: 64px 0;
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(0,212,255,.04), transparent 60%),
    rgba(6, 12, 24, 0.6);
}
.stats-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; text-align: center;
}
.stat-item .num {
  font-family: var(--font-display); font-size: clamp(36px, 4.6vw, 56px); font-weight: 800;
  color: var(--cyan); text-shadow: 0 0 28px rgba(0,212,255,.55); line-height: 1.1;
}
.stat-item .num .suffix { font-size: .55em; color: var(--text); margin-left: 4px; }
.stat-item .label { color: var(--muted); letter-spacing: 2px; margin-top: 10px; font-size: 15px; }

/* ============ 首页 关于区 ============ */
.about-grid {
  display: grid; grid-template-columns: 1.05fr 1fr; gap: 64px; align-items: center;
}
.about-visual { position: relative; }
.about-visual .frame {
  position: relative; border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--line);
}
.about-visual .frame img { width: 100%; height: 430px; object-fit: cover; transition: transform .6s; }
.about-visual .frame:hover img { transform: scale(1.05); }
.about-visual .frame::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(165deg, rgba(0,212,255,.12), transparent 45%, rgba(4,8,15,.55));
  pointer-events: none;
}
.about-visual .deco-ring {
  position: absolute; right: -36px; bottom: -36px; width: 150px; height: 150px;
  border: 1px dashed var(--line-strong); border-radius: 50%; z-index: -1;
  animation: spin 24s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.about-visual .float-chip {
  position: absolute; left: -28px; top: 32px;
  background: var(--bg-panel); border: 1px solid var(--line-strong);
  border-radius: 12px; padding: 16px 22px; backdrop-filter: blur(10px);
  box-shadow: 0 14px 40px rgba(0,0,0,.5);
  animation: floatY 5s ease-in-out infinite;
}
.about-visual .float-chip .big {
  font-family: var(--font-display); font-size: 26px; font-weight: 800; color: var(--cyan);
}
.about-visual .float-chip .small { font-size: 13px; color: var(--muted); letter-spacing: 1px; }
@keyframes floatY { 50% { transform: translateY(-12px); } }
.about-copy h3 { font-size: 28px; margin-bottom: 18px; letter-spacing: 1px; }
.about-copy p { color: var(--muted); margin-bottom: 16px; }
.check-list { margin: 24px 0 32px; display: grid; gap: 14px; }
.check-list li { display: flex; gap: 12px; align-items: flex-start; color: var(--text); }
.check-list li::before {
  content: ''; flex: none; width: 20px; height: 20px; margin-top: 5px;
  background:
    linear-gradient(45deg, transparent 48%, var(--cyan) 48%, var(--cyan) 56%, transparent 56%) no-repeat 4px 9px / 6px 5px,
    linear-gradient(-48deg, transparent 46%, var(--cyan) 46%, var(--cyan) 56%, transparent 56%) no-repeat 8px 6px / 9px 9px,
    rgba(0, 212, 255, 0.1);
  border: 1px solid var(--line-strong); border-radius: 5px;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
}
.check-list li b { color: var(--cyan); font-weight: 600; }

/* ============ 产品卡片 ============ */
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.product-card {
  position: relative; border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--line); background: var(--bg-card);
  transition: transform .4s, box-shadow .4s, border-color .4s;
}
.product-card:hover {
  transform: translateY(-10px); border-color: var(--line-strong);
  box-shadow: 0 24px 60px rgba(0,0,0,.55), var(--glow);
}
.product-card .thumb { position: relative; height: 230px; overflow: hidden; background: #0a1628; }
.product-card .thumb img {
  width: 100%; height: 100%; object-fit: cover; transition: transform .6s;
}
.product-card:hover .thumb img { transform: scale(1.08); }
.product-card .thumb::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(6,12,24,.92));
}
.product-card .scanline {
  position: absolute; left: 0; right: 0; top: -40%; height: 32%; z-index: 2;
  background: linear-gradient(180deg, transparent, rgba(0,212,255,.18), transparent);
  opacity: 0; transition: opacity .3s;
}
.product-card:hover .scanline { opacity: 1; animation: scanMove 1.6s linear infinite; }
@keyframes scanMove { from { top: -40%; } to { top: 110%; } }
.product-card .body { padding: 26px 26px 30px; position: relative; }
.product-card .tag {
  position: absolute; top: -16px; left: 26px; font-size: 12px; letter-spacing: 2px;
  padding: 5px 14px; border-radius: 999px; color: var(--cyan);
  background: rgba(4, 10, 20, 0.9); border: 1px solid var(--line-strong);
}
.product-card h4 { font-size: 20px; margin: 10px 0 10px; letter-spacing: 1px; }
.product-card p { color: var(--muted); font-size: 14.5px; min-height: 76px; }
.product-card .more {
  display: inline-flex; align-items: center; gap: 8px; margin-top: 14px;
  color: var(--cyan); font-size: 14px; letter-spacing: 2px; font-weight: 600;
}
.product-card .more .arrow { transition: transform .3s; }
.product-card:hover .more .arrow { transform: translateX(6px); }

/* ============ 工艺跑马灯 ============ */
.marquee-band {
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  padding: 22px 0; overflow: hidden; background: rgba(6, 12, 24, 0.5);
  position: relative;
}
.marquee-band::before, .marquee-band::after {
  content: ''; position: absolute; top: 0; bottom: 0; width: 120px; z-index: 2;
  pointer-events: none;
}
.marquee-band::before { left: 0; background: linear-gradient(90deg, var(--bg-deep), transparent); }
.marquee-band::after { right: 0; background: linear-gradient(-90deg, var(--bg-deep), transparent); }
.marquee-track {
  display: flex; gap: 60px; width: max-content;
  animation: marquee 30s linear infinite;
}
.marquee-track span {
  font-family: var(--font-display); font-size: 18px; letter-spacing: 4px;
  color: var(--dim); white-space: nowrap; display: flex; align-items: center; gap: 60px;
}
.marquee-track span i {
  width: 8px; height: 8px; background: var(--cyan); border-radius: 50%;
  box-shadow: 0 0 10px var(--cyan); display: inline-block; font-style: normal;
}
@keyframes marquee { to { transform: translateX(-50%); } }

/* ============ 优势 / 特性 ============ */
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.feature-item { text-align: center; padding: 40px 22px; }
.feature-item .icon-wrap {
  width: 76px; height: 76px; margin: 0 auto 22px; position: relative;
  display: grid; place-items: center;
}
.feature-item .icon-wrap::before {
  content: ''; position: absolute; inset: 0; border-radius: 18px;
  border: 1px solid var(--line-strong); transform: rotate(45deg);
  transition: transform .5s, box-shadow .5s; background: rgba(0,212,255,.05);
}
.feature-item:hover .icon-wrap::before { transform: rotate(225deg); box-shadow: var(--glow); }
.feature-item .icon-wrap svg { width: 34px; height: 34px; position: relative; z-index: 1; }
.feature-item h4 { font-size: 19px; margin-bottom: 10px; letter-spacing: 1px; }
.feature-item p { color: var(--muted); font-size: 14.5px; }

/* ============ CTA 区 ============ */
.cta-band {
  position: relative; padding: 90px 0; text-align: center; overflow: hidden;
  border-top: 1px solid var(--line);
  background:
    radial-gradient(ellipse 60% 90% at 50% 110%, rgba(0, 212, 255, 0.14), transparent),
    rgba(6, 12, 24, 0.4);
}
.cta-band h3 { font-size: clamp(26px, 3.4vw, 40px); margin-bottom: 16px; letter-spacing: 2px; }
.cta-band p { color: var(--muted); margin-bottom: 36px; }

/* ============ 页脚 ============ */
.site-footer {
  border-top: 1px solid var(--line); background: #03070d;
  padding: 70px 0 0; position: relative;
}
.footer-grid {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 44px; padding-bottom: 50px;
}
.footer-grid h5 {
  font-size: 16px; letter-spacing: 2px; margin-bottom: 20px; color: var(--text);
  position: relative; padding-bottom: 12px;
}
.footer-grid h5::after {
  content: ''; position: absolute; left: 0; bottom: 0; width: 28px; height: 2px;
  background: var(--cyan); border-radius: 2px;
}
.footer-grid p, .footer-grid li { color: var(--dim); font-size: 14.5px; margin-bottom: 10px; }
.footer-grid a:hover { color: var(--cyan); }
.footer-brand .brand { margin-bottom: 18px; }
.footer-contact li { display: flex; gap: 10px; align-items: flex-start; }
.footer-contact .k { color: var(--cyan); flex: none; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.05); padding: 22px 0;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px;
  color: var(--dim); font-size: 13px;
}

/* 返回顶部 */
#backTop {
  position: fixed; right: 28px; bottom: 28px; z-index: 900;
  width: 46px; height: 46px; border-radius: 12px; cursor: pointer;
  border: 1px solid var(--line-strong); background: rgba(6, 12, 24, 0.85);
  color: var(--cyan); font-size: 18px; display: grid; place-items: center;
  opacity: 0; pointer-events: none; transform: translateY(16px);
  transition: all .35s; backdrop-filter: blur(8px);
}
#backTop.show { opacity: 1; pointer-events: auto; transform: none; }
#backTop:hover { box-shadow: var(--glow); }

/* ============ 滚动渐入动画 ============ */
.reveal { opacity: 0; transform: translateY(36px); transition: opacity .8s ease, transform .8s cubic-bezier(.16,.8,.3,1); }
.reveal.in { opacity: 1; transform: none; }
.reveal.from-left { transform: translateX(-44px); }
.reveal.from-right { transform: translateX(44px); }
.reveal.from-left.in, .reveal.from-right.in { transform: none; }
.reveal.zoom { transform: scale(.92); }
.reveal.zoom.in { transform: scale(1); }
.d1 { transition-delay: .12s; } .d2 { transition-delay: .24s; }
.d3 { transition-delay: .36s; } .d4 { transition-delay: .48s; }
.d5 { transition-delay: .6s; }  .d6 { transition-delay: .72s; }

/* ============ 关于页 ============ */
.timeline { position: relative; max-width: 860px; margin: 0 auto; padding: 20px 0; }
.timeline::before {
  content: ''; position: absolute; left: 50%; top: 0; bottom: 0; width: 2px;
  background: linear-gradient(180deg, transparent, var(--line-strong) 12%, var(--line-strong) 88%, transparent);
  transform: translateX(-50%);
}
.tl-item { position: relative; width: 50%; padding: 0 48px 56px; }
.tl-item:nth-child(odd) { left: 0; text-align: right; }
.tl-item:nth-child(even) { left: 50%; }
.tl-item .node {
  position: absolute; top: 4px; width: 16px; height: 16px; border-radius: 50%;
  background: var(--bg-deep); border: 2px solid var(--cyan);
  box-shadow: 0 0 14px rgba(0,212,255,.7);
}
.tl-item:nth-child(odd) .node { right: -8px; }
.tl-item:nth-child(even) .node { left: -8px; }
.tl-item .node::after {
  content: ''; position: absolute; inset: -7px; border-radius: 50%;
  border: 1px solid rgba(0,212,255,.4); animation: ripple 2.4s infinite;
}
@keyframes ripple { from { transform: scale(.6); opacity: 1; } to { transform: scale(1.6); opacity: 0; } }
.tl-item .year {
  font-family: var(--font-display); font-size: 26px; font-weight: 800; color: var(--cyan);
  margin-bottom: 8px; text-shadow: 0 0 18px rgba(0,212,255,.45);
}
.tl-item h4 { font-size: 18px; margin-bottom: 8px; }
.tl-item p { color: var(--muted); font-size: 14.5px; }

/* 证书/专利墙 */
.cert-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.cert-grid.three { grid-template-columns: repeat(3, 1fr); }
.cert-item {
  background: var(--bg-card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 18px; transition: all .35s; position: relative; overflow: hidden;
}
.cert-item img {
  width: 100%; height: 260px; object-fit: contain; background: #fff; border-radius: 8px;
}
.cert-item .name { text-align: center; margin-top: 14px; font-size: 14.5px; color: var(--muted); letter-spacing: 1px; }
.cert-item:hover { transform: translateY(-6px); border-color: var(--line-strong); box-shadow: var(--glow); }
.cert-item:hover .name { color: var(--cyan); }

/* 企业文化 */
.culture-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.culture-card { text-align: center; padding: 46px 30px; }
.culture-card .zh-big {
  font-size: 30px; font-weight: 800; letter-spacing: 6px; margin-bottom: 6px;
  background: linear-gradient(90deg, var(--cyan), var(--violet));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.culture-card .en-small {
  font-family: var(--font-display); font-size: 11px; letter-spacing: 4px;
  color: var(--dim); text-transform: uppercase; margin-bottom: 18px;
}
.culture-card p { color: var(--muted); font-size: 14.5px; }

/* ============ 产品页 ============ */
.cat-tabs {
  display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; margin-bottom: 56px;
}
.cat-tab {
  padding: 12px 32px; border-radius: 999px; cursor: pointer; font-size: 16px;
  letter-spacing: 2px; color: var(--muted); border: 1px solid var(--line);
  background: rgba(8, 16, 32, 0.6); transition: all .3s; font-weight: 600;
}
.cat-tab:hover { color: var(--text); border-color: var(--line-strong); }
.cat-tab.active {
  color: #03101e; background: linear-gradient(95deg, var(--cyan), #44a8ff);
  border-color: transparent; box-shadow: 0 0 24px rgba(0,212,255,.4);
}
.cat-panel { display: none; }
.cat-panel.active { display: block; animation: panelIn .55s ease both; }
@keyframes panelIn { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: none; } }

.product-detail {
  display: grid; grid-template-columns: 1fr 1.1fr; gap: 50px; align-items: center;
  padding: 50px 0; border-bottom: 1px dashed rgba(0,212,255,.14);
}
.product-detail:last-child { border-bottom: none; }
.product-detail.flip .pd-visual { order: 2; }
.pd-visual {
  position: relative; border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--line); background: rgba(255,255,255,.02);
}
.pd-visual img { width: 100%; height: 360px; object-fit: cover; transition: transform .6s; }
.pd-visual:hover img { transform: scale(1.05); }
.pd-visual .index {
  position: absolute; top: 14px; left: 14px; z-index: 2;
  font-family: var(--font-display); font-size: 13px; letter-spacing: 2px;
  padding: 6px 14px; color: var(--cyan); background: rgba(4,10,20,.85);
  border: 1px solid var(--line-strong); border-radius: 8px;
}
.pd-copy h3 { font-size: 26px; margin-bottom: 6px; letter-spacing: 1px; }
.pd-copy .en-name {
  font-family: var(--font-display); font-size: 12px; letter-spacing: 3px;
  color: var(--cyan); text-transform: uppercase; margin-bottom: 18px;
}
.pd-copy > p { color: var(--muted); margin-bottom: 18px; font-size: 15.5px; }
.spec-list { display: grid; gap: 12px; }
.spec-list li {
  display: flex; gap: 12px; align-items: flex-start; font-size: 14.5px; color: var(--muted);
  padding: 10px 16px; border: 1px solid rgba(0,212,255,.1); border-radius: 10px;
  background: rgba(0,212,255,.03); transition: all .3s;
}
.spec-list li:hover { border-color: var(--line-strong); background: rgba(0,212,255,.07); }
.spec-list li b { color: var(--text); font-weight: 600; flex: none; }
.spec-list li::before {
  content: '▸'; color: var(--cyan); flex: none; line-height: inherit;
}

/* 六大工艺 hex 网格 */
.process-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.process-card { padding: 36px 30px; }
.process-card .pno {
  font-family: var(--font-display); font-size: 38px; font-weight: 800;
  color: transparent; -webkit-text-stroke: 1px rgba(0,212,255,.55);
  line-height: 1; margin-bottom: 16px;
}
.process-card h4 { font-size: 20px; margin-bottom: 4px; }
.process-card .en {
  font-family: var(--font-display); font-size: 11px; letter-spacing: 3px;
  color: var(--cyan); margin-bottom: 14px; text-transform: uppercase;
}
.process-card p { color: var(--muted); font-size: 14.5px; }

/* ============ 技术页 ============ */
.rd-pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.pillar { padding: 42px 32px; }
.pillar .pillar-no {
  width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center;
  font-family: var(--font-display); font-size: 22px; font-weight: 800; color: var(--cyan);
  border: 1px solid var(--line-strong); background: rgba(0,212,255,.06);
  margin-bottom: 22px; box-shadow: inset 0 0 18px rgba(0,212,255,.12);
}
.pillar h4 { font-size: 20px; margin-bottom: 12px; }
.pillar p { color: var(--muted); font-size: 14.5px; }

.patent-band {
  display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center;
}
.patent-list { display: grid; gap: 18px; }
.patent-row {
  display: flex; gap: 18px; padding: 22px 24px; align-items: flex-start;
}
.patent-row .year-chip {
  flex: none; font-family: var(--font-display); font-weight: 800; font-size: 17px;
  color: var(--cyan); padding: 8px 14px; border: 1px solid var(--line-strong);
  border-radius: 10px; background: rgba(0,212,255,.05);
}
.patent-row h5 { font-size: 16.5px; margin-bottom: 6px; }
.patent-row p { color: var(--muted); font-size: 14px; }

/* 数据条 */
.bar-list { display: grid; gap: 26px; }
.bar-item .bar-head { display: flex; justify-content: space-between; margin-bottom: 10px; font-size: 15px; }
.bar-item .bar-head b { color: var(--text); }
.bar-item .bar-head span { color: var(--cyan); font-family: var(--font-display); }
.bar-track {
  height: 8px; border-radius: 4px; background: rgba(0,212,255,.08);
  border: 1px solid rgba(0,212,255,.12); overflow: hidden;
}
.bar-fill {
  height: 100%; width: 0; border-radius: 4px;
  background: linear-gradient(90deg, var(--blue), var(--cyan));
  box-shadow: 0 0 12px rgba(0,212,255,.6);
  transition: width 1.4s cubic-bezier(.2,.7,.3,1);
}

/* ============ 联系页 ============ */
.contact-wrap { display: grid; grid-template-columns: 1fr 1.2fr; gap: 50px; align-items: stretch; }
.contact-info-card, .contact-form { display: flex; flex-direction: column; }
.contact-info-card { padding: 42px 38px; }
.contact-info-card h3 { font-size: 24px; margin-bottom: 26px; }
.ci-row { display: flex; gap: 16px; margin-bottom: 24px; align-items: flex-start; }
.ci-row .ci-ic {
  flex: none; width: 46px; height: 46px; border-radius: 12px;
  border: 1px solid var(--line-strong); display: grid; place-items: center;
  background: rgba(0,212,255,.06);
}
.ci-row .ci-ic svg { width: 20px; height: 20px; }
.ci-row .k { font-size: 13px; color: var(--dim); letter-spacing: 2px; margin-bottom: 2px; }
.ci-row .v { font-size: 16.5px; color: var(--text); }
.contact-form { padding: 42px 38px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 13.5px; color: var(--muted); letter-spacing: 2px; margin-bottom: 8px; }
.field input, .field textarea, .field select {
  width: 100%; padding: 13px 16px; border-radius: 10px; color: var(--text);
  background: rgba(4, 10, 20, 0.7); border: 1px solid rgba(0,212,255,.15);
  font-family: var(--font-body); font-size: 15px; outline: none; transition: all .3s;
}
.field input:focus, .field textarea:focus, .field select:focus {
  border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(0,212,255,.12);
}
.field textarea { min-height: 130px; resize: vertical; }
.map-placeholder {
  margin-top: 60px; position: relative; height: 320px; border-radius: var(--radius);
  overflow: hidden; border: 1px solid var(--line);
  background:
    radial-gradient(circle at 62% 45%, rgba(0,212,255,.18), transparent 26%),
    linear-gradient(rgba(0, 212, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.05) 1px, transparent 1px),
    #060d1a;
  background-size: auto, 42px 42px, 42px 42px, auto;
}
.map-pin {
  position: absolute; left: 62%; top: 45%; transform: translate(-50%, -100%);
  text-align: center;
}
.map-pin .pin-dot {
  width: 18px; height: 18px; margin: 0 auto; border-radius: 50% 50% 50% 0;
  background: var(--cyan); transform: rotate(-45deg);
  box-shadow: 0 0 18px var(--cyan); animation: floatY 2.6s ease-in-out infinite;
}
.map-pin .pin-ring {
  width: 46px; height: 46px; border: 1px solid rgba(0,212,255,.5); border-radius: 50%;
  position: absolute; left: 50%; top: 24px; transform: translateX(-50%);
  animation: ripple 2s infinite;
}
.map-pin .pin-label {
  margin-top: 30px; white-space: nowrap; font-size: 14px; color: var(--text);
  background: rgba(4,10,20,.88); border: 1px solid var(--line-strong);
  padding: 8px 18px; border-radius: 999px;
}

/* toast */
#toast {
  position: fixed; left: 50%; bottom: 50px; transform: translateX(-50%) translateY(20px);
  background: rgba(4, 12, 24, 0.95); border: 1px solid var(--line-strong);
  color: var(--cyan); padding: 14px 32px; border-radius: 12px; z-index: 1200;
  opacity: 0; pointer-events: none; transition: all .4s; letter-spacing: 1px;
  box-shadow: var(--glow); backdrop-filter: blur(10px);
}
#toast.show { opacity: 1; transform: translateX(-50%); }

/* ============ 响应式 ============ */
@media (max-width: 1024px) {
  .product-grid, .process-grid, .rd-pillars, .culture-grid { grid-template-columns: repeat(2, 1fr); }
  .cert-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid, .patent-band, .contact-wrap { grid-template-columns: 1fr; gap: 44px; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .product-detail { grid-template-columns: 1fr; }
  .product-detail.flip .pd-visual { order: 0; }
}
@media (max-width: 720px) {
  .main-nav {
    position: fixed; top: 76px; left: 0; right: 0; flex-direction: column;
    background: rgba(4, 9, 18, 0.97); backdrop-filter: blur(18px);
    padding: 24px 6%; gap: 4px; align-items: stretch;
    border-bottom: 1px solid var(--line);
    transform: translateY(-130%); transition: transform .4s; z-index: -1;
  }
  .main-nav.open { transform: none; }
  .main-nav a { padding: 14px 10px; }
  .nav-cta { margin-left: 0; text-align: center; justify-content: center; display: flex; }
  .nav-toggle { display: flex; }
  .stats-grid, .feature-grid, .product-grid, .process-grid,
  .rd-pillars, .culture-grid, .cert-grid, .form-row { grid-template-columns: 1fr; }
  .timeline::before { left: 8px; }
  .tl-item, .tl-item:nth-child(even) { width: 100%; left: 0; text-align: left; padding: 0 0 46px 40px; }
  .tl-item:nth-child(odd) .node, .tl-item:nth-child(even) .node { left: 0; right: auto; }
  section.block { padding: 64px 0; }
  .hero-content { padding: 120px 0 80px 24px; }
  .hero.sub .hero-content { padding: 80px 0 50px 24px; }
}
@media (max-width: 1024px) {
  .brand-text, .brand-sep { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}