/* ============ 微振官网 V4 · Insta360 风格主样式 ============ */

/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  font-family: "PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,BlinkMacSystemFont,sans-serif;
  color: var(--c-ink); background: var(--c-bg);
  font-size: var(--fs-body); line-height: var(--lh-body);
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
img, svg, video { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color var(--t-fast) var(--ease); }
ul { list-style: none; }
h1, h2, h3, h4 { color: var(--c-ink); font-weight: 700; line-height: var(--lh-tight); letter-spacing: -.02em; }
button { font: inherit; cursor: pointer; border: 0; background: none; color: inherit; }

/* 布局容器 */
.container { max-width: var(--container); margin: 0 auto; padding-left: var(--pad-x); padding-right: var(--pad-x); }
.section { padding-top: var(--sec-y); padding-bottom: var(--sec-y); }
.section-sm { padding-top: var(--sec-y-sm); padding-bottom: var(--sec-y-sm); }

/* 通用按钮（Insta360 风：黑胶囊 + 描边胶囊） */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 13px 28px; border-radius: var(--r-btn); font-size: 15px; font-weight: 500;
  border: 1px solid transparent; cursor: pointer; transition: all var(--t-fast) var(--ease); white-space: nowrap; }
.btn-primary { background: var(--c-btn); color: #fff; border-color: var(--c-btn); }
.btn-primary:hover { background: var(--c-btn-h); border-color: var(--c-btn-h); transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--c-ink); border-color: var(--c-line); }
.btn-ghost:hover { border-color: var(--c-ink); transform: translateY(-1px); }
.btn-link { color: var(--c-primary); font-weight: 500; display: inline-flex; align-items: center; gap: 4px; }
.btn-link:hover { text-decoration: underline; }
.arr { display: inline-block; transition: transform var(--t-fast) var(--ease); margin-left: 2px; }
.btn:hover .arr, .btn-link:hover .arr { transform: translateX(3px); }

/* ============ 顶部导航（白底吸顶毛玻璃 · Insta360 风） ============ */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: var(--glass-nav); -webkit-backdrop-filter: blur(20px); backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent; transition: border-color var(--t-mid);
}
.site-header.is-stuck { border-bottom-color: var(--c-line-soft); }
.site-header .hwrap { display: flex; align-items: center; justify-content: space-between; height: 52px; }
.logo { display: flex; align-items: center; gap: 8px; color: var(--c-ink); font-size: 17px; font-weight: 600; letter-spacing: -.01em; }
.logo img { width: 26px; height: 26px; border-radius: 6px; }
.main-nav { display: flex; gap: 32px; }
.main-nav a { color: var(--c-ink); font-size: 14px; padding: 8px 0; opacity: .82; position: relative; }
.main-nav a:hover { opacity: 1; }
.main-nav a.on { opacity: 1; }
.main-nav a.on::after { content: ""; position: absolute; left: 0; right: 0;; bottom: 0; height: 1px; background: var(--c-ink); }
.header-cta { display: flex; align-items: center; gap: 12px; }
.header-cta .btn { padding: 8px 18px; font-size: 14px; }

/* 移动汉堡 */
.nav-toggle { display: none; }
.nav-burger { display: none; width: 40px; height: 40px; border-radius: 8px; align-items: center; justify-content: center; cursor: pointer; }
.nav-burger svg { width: 22px; height: 22px; stroke: var(--c-ink); }
@media (max-width: 767px) {
  .nav-burger { display: flex; }
  .main-nav { position: absolute; top: 52px; left: 0; right: 0; flex-direction: column; gap: 0;
    background: #FFFFFF; border-bottom: 1px solid var(--c-line-soft);
    box-shadow: 0 10px 26px rgba(15,23,42,.08);
    max-height: 0; overflow: hidden; transition: max-height .3s var(--ease); }
  .main-nav a { padding: 14px 20px; border-top: 1px solid var(--c-line-soft); opacity: 1; }
  .main-nav a.on::after { display: none; }
  .nav-toggle:checked ~ .main-nav { max-height: 360px; }
}

/* ============ Hero · 5 屏 SVG 2D 动画轮播（Insta360 全宽横幅 · 文字画进 SVG 无遮罩） ============ */
.hero {
  position: relative; width: 100%; aspect-ratio: 1600 / 845;
  max-height: calc(100vh - 64px); min-height: 0; margin: 0 auto;
  background: var(--c-hero-bg); overflow: hidden;
}
.hero-slides { position: absolute; inset: 0; }
.hero-light { position: absolute; inset: 0; z-index: 3; pointer-events: none; opacity: 0;
  background: radial-gradient(300px circle at var(--lx,50%) var(--ly,40%), rgba(30,107,230,.16), rgba(30,107,230,.05) 45%, transparent 70%);
  transition: opacity .4s var(--ease); }
.hero:hover .hero-light { opacity: 1; }
#heroTitle { transition: transform .25s ease-out, filter .25s ease-out; transform-origin: 60px 280px; }
.slide { position: absolute; inset: 0; opacity: 0; visibility: hidden;
  transition: opacity 1s var(--ease), visibility 1s; }
.slide.is-active { opacity: 1; visibility: visible; z-index: 1; }
.slide-scene { position: absolute; inset: 0; }
.slide-scene svg { width: 100%; height: 100%; display: block; }

/* 左右切换箭头 */
.hero-arrow { position: absolute; top: 50%; transform: translateY(-50%); z-index: 6;
  width: 46px; height: 46px; border-radius: 50%; border: 1px solid rgba(29,29,31,.14);
  background: rgba(255,255,255,.72); -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
  display: flex; align-items: center; justify-content: center; cursor: pointer;
  color: var(--c-ink); transition: all var(--t-fast); opacity: .9; }
.hero-arrow:hover { background: #fff; box-shadow: 0 6px 18px rgba(0,0,0,.12); transform: translateY(-50%) scale(1.06); }
.hero-arrow svg { width: 20px; height: 20px; stroke: currentColor; }
.hero-arrow.prev { left: 14px; }
.hero-arrow.next { right: 14px; }

/* dots（底部居中 · 胶囊指示器） */
.hero-dots { position: absolute; left: 50%; transform: translateX(-50%); bottom: 14px; z-index: 6;
  display: flex; gap: 8px; align-items: center;
  background: rgba(255,255,255,.66); border: 1px solid rgba(29,29,31,.08);
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
  padding: 7px 12px; border-radius: 99px; }
.hero-dots button { width: 7px; height: 7px; border-radius: 99px; padding: 0; border: 0; cursor: pointer;
  background: rgba(29,29,31,.32); transition: all .3s var(--ease); }
.hero-dots button.on { width: 26px; background: var(--c-ink); }
.hero-dots .label { font-size: var(--fs-xs); color: var(--c-mute); margin-left: 10px; padding-left: 10px;
  border-left: 1px solid rgba(29,29,31,.12); white-space: nowrap; }

/* 移动端：直接显示 SVG（文字已画进 SVG） */
@media (max-width: 767px) {
  .hero { aspect-ratio: auto; max-height: none; height: auto; padding-top: 52px; }
  .hero-slides { position: relative; inset: auto; }
  .hero-light { display: none; }
  .slide { position: relative; display: none; }
  .slide.is-active { display: block; }
  .slide-scene { position: relative; height: auto; }
  .slide-scene svg { width: 100%; height: auto; display: block; }
  .hero-arrow { display: none; }
  .hero-dots { bottom: 6px; padding: 5px 10px; }
  .hero-dots .label { display: none; }
}

/* ============ 区块小标题 ============ */
.sec-title { text-align: center; margin-bottom: 56px; }
.sec-title .kicker { font-size: var(--fs-sm); color: var(--c-primary); letter-spacing: 3px;
  text-transform: uppercase; margin-bottom: 14px; font-weight: 600; }
.sec-title h2 { font-size: var(--fs-h2); margin-bottom: 14px; }
.sec-title .desc { color: var(--c-mute); font-size: 17px; max-width: 640px; margin: 0 auto; }
@media (max-width: 767px) { .sec-title { margin-bottom: 32px; } .sec-title h2 { font-size: 28px; } }

/* ============ 产品大图轮播横滑卡（Insta360 风格） ============ */
.product-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.product-card {
  background: var(--c-bg); border: 1px solid var(--c-line-soft); border-radius: var(--r-card);
  overflow: hidden; transition: all var(--t-fast);
  display: flex; flex-direction: column;
}
.product-card:hover { transform: translateY(-4px); box-shadow: var(--sh-card-h); border-color: transparent; }
.product-card .pic { aspect-ratio: 4/3; background: #fff; display: flex; align-items: center; justify-content: center; padding: 0; overflow: hidden; }
.product-card .pic img, .product-card .pic svg { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .5s var(--ease); }
.product-card:hover .pic img, .product-card:hover .pic svg { transform: scale(1.04); }
.product-card .body { padding: 22px 24px 28px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.product-card .tag { font-size: var(--fs-xs); color: var(--c-primary); letter-spacing: 2px; font-weight: 600; }
.product-card h3 { font-size: 22px; }
.product-card .desc { color: var(--c-mute); font-size: 14px; line-height: 1.6; flex: 1; }
.product-card .more { font-size: 13px; color: var(--c-primary); font-weight: 600; margin-top: 4px; display: inline-flex; align-items: center; gap: 4px; }

@media (max-width: 1023px) { .product-cards { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 767px) { .product-cards { grid-template-columns: 1fr; gap: 18px; } }

/* ============ 走近微振 · 左右图文 ============ */
.approach { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.approach.reverse { direction: rtl; }
.approach.reverse > * { direction: ltr; }
.approach .pic { border-radius: var(--r-card); overflow: hidden; background: var(--c-bg-alt);
  aspect-ratio: 4/3; display: flex; align-items: center; justify-content: center; }
.approach .pic img { width: 100%; height: 100%; object-fit: cover; }
.approach .copy h2 { font-size: var(--fs-h2); margin-bottom: 18px; }
.approach .copy p { color: var(--c-text); margin-bottom: 14px; font-size: 16px; }
.approach .copy .more { margin-top: 12px; }
@media (max-width: 767px) { .approach, .approach.reverse { grid-template-columns: 1fr; direction: ltr; gap: 28px; } }

/* ============ 行业应用 3 卡 ============ */
.industry-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.industry-card { background: var(--c-bg); border: 1px solid var(--c-line-soft); border-radius: var(--r-card);
  padding: 36px 28px; transition: all var(--t-fast); }
.industry-card:hover { transform: translateY(-4px); box-shadow: var(--sh-card-h); border-color: transparent; }
.industry-card .ic { width: 52px; height: 52px; border-radius: 14px;
  background: rgba(30,107,230,.08); color: var(--c-primary);
  display: flex; align-items: center; justify-content: center; margin-bottom: 22px; }
.industry-card .ic svg { width: 28px; height: 28px; stroke: var(--c-primary); stroke-width: 1.6; fill: none; stroke-linecap: round; stroke-linejoin: round; }
.industry-card h3 { font-size: 20px; margin-bottom: 10px; }
.industry-card p { color: var(--c-mute); font-size: 15px; }
@media (max-width: 767px) { .industry-grid { grid-template-columns: 1fr; } }

/* ============ 数据带 ============ */
.data-band { background: var(--c-bg-alt); padding: 64px 0; }
.data-band .grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.data-item { text-align: center; }
.data-item .v { font-size: 44px; font-weight: 700; color: var(--c-ink); letter-spacing: -.02em;
  font-variant-numeric: tabular-nums; font-family: "DIN Alternate","PingFang SC",system-ui,sans-serif; }
.data-item .v .u { font-size: 18px; color: var(--c-mute); font-weight: 500; margin-left: 4px; }
.data-item .l { color: var(--c-mute); font-size: var(--fs-sm); margin-top: 8px; }
@media (max-width: 767px) { .data-band .grid { grid-template-columns: repeat(2, 1fr); gap: 28px 12px; } .data-item .v { font-size: 30px; } }

/* ============ 特色能力卡 ============ */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature-card { background: var(--c-bg); border: 1px solid var(--c-line-soft); border-radius: var(--r-card);
  padding: 32px 28px; transition: all var(--t-fast); }
.feature-card:hover { transform: translateY(-4px); box-shadow: var(--sh-card-h); border-color: transparent; }
.feature-card .ic { width: 46px; height: 46px; border-radius: 12px;
  background: rgba(30,107,230,.08); display: flex; align-items: center; justify-content: center; margin-bottom: 18px; }
.feature-card .ic.red { background: rgba(232,68,60,.10); }
.feature-card .ic.green { background: rgba(34,197,94,.12); }
.feature-card .ic svg { width: 24px; height: 24px; stroke: var(--c-primary); stroke-width: 1.8; fill: none; stroke-linecap: round; stroke-linejoin: round; }
.feature-card .ic.red svg { stroke: var(--c-accent); }
.feature-card .ic.green svg { stroke: var(--c-success); }
.feature-card h3 { font-size: 18px; margin-bottom: 8px; }
.feature-card p { color: var(--c-mute); font-size: 14px; line-height: 1.6; }
@media (max-width: 1023px) { .feature-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 767px) { .feature-grid { grid-template-columns: 1fr; gap: 16px; } }

/* ============ CTA ============ */
.cta-band {
  background: linear-gradient(135deg, #1D1D1F 0%, #2A2A2C 100%);
  border-radius: var(--r-card); padding: 56px 64px; color: #fff;
  display: flex; align-items: center; justify-content: space-between; gap: 32px;
}
.cta-band h2 { color: #fff; font-size: 28px; margin-bottom: 8px; }
.cta-band p { color: rgba(255,255,255,.7); font-size: 15px; }
.cta-band .btn-primary { background: #fff; color: var(--c-ink); border-color: #fff; }
.cta-band .btn-primary:hover { background: #f0f0f2; }
@media (max-width: 767px) { .cta-band { flex-direction: column; align-items: flex-start; padding: 36px 28px; } .cta-band h2 { font-size: 22px; } }

/* ============ 页脚 ============ */
.site-footer { background: var(--c-bg-alt); padding: 64px 0 28px; color: var(--c-text); border-top: 1px solid var(--c-line-soft); }
.site-footer .fgrid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 44px; }
.site-footer h4 { color: var(--c-ink); font-size: 14px; margin-bottom: 18px; font-weight: 600; }
.site-footer a, .site-footer li { display: block; color: var(--c-mute); font-size: 14px; line-height: 2; }
.site-footer a:hover { color: var(--c-ink); }
.site-footer .brand p { font-size: 14px; color: var(--c-mute); line-height: 1.7; max-width: 320px; }
.site-footer .brand .logo { margin-bottom: 16px; }
.site-footer .copy { border-top: 1px solid var(--c-line-soft); padding-top: 22px; font-size: 13px; color: var(--c-mute); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; }
@media (max-width: 767px) { .site-footer .fgrid { grid-template-columns: 1fr 1fr; gap: 28px; } .site-footer .brand { grid-column: 1 / -1; } }

/* ============ 入场动效 ============ */
@keyframes fadeUp { from { opacity: 0; transform: translateY(28px); } to { opacity: 1; transform: none; } }
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1 !important; transform: none !important; }
}
/* ============ 内页通用组件（V4 统一风格） ============ */
/* 子页页头 */
.page-head { background: linear-gradient(180deg, #F2F6FB 0%, #E4EDF9 100%);
  border-bottom: 1px solid var(--c-line-soft); padding: 76px 0 56px; text-align: center; }
.page-head .kicker { color: var(--c-primary); font-size: 13px; letter-spacing: 4px; font-weight: 600; text-transform: uppercase; margin-bottom: 14px; }
.page-head h1 { font-size: clamp(28px, 3.6vw, 40px); letter-spacing: -.02em; }
.page-head p { color: var(--c-mute); font-size: 17px; max-width: 700px; margin: 16px auto 0; }
/* 内容块标题 */
.blk-title { text-align: center; margin-bottom: 44px; }
.blk-title .k { font-size: 13px; color: var(--c-primary); letter-spacing: 3px; font-weight: 600; text-transform: uppercase; margin-bottom: 10px; }
.blk-title h2 { font-size: var(--fs-h2); margin-bottom: 10px; }
.blk-title p { color: var(--c-mute); max-width: 680px; margin: 0 auto; }
/* 双栏图文 */
.split2 { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.split2 .pic { border-radius: var(--r-card); overflow: hidden; background: var(--c-bg-alt); display: flex; align-items: center; justify-content: center; }
.split2 .pic img { width: 100%; height: 100%; object-fit: cover; }
.split2 .txt h3 { font-size: 20px; margin-bottom: 14px; }
.split2 .txt p { color: var(--c-text); margin-bottom: 12px; }
@media (max-width: 900px) { .split2 { grid-template-columns: 1fr; } }
/* 勾选列表 */
.check-list { list-style: none; }
.check-list li { display: flex; gap: 10px; align-items: flex-start; color: var(--c-text); margin-bottom: 10px; line-height: 1.6; }
.check-list .tick { flex: none; width: 18px; height: 18px; margin-top: 4px; border-radius: 50%; background: rgba(30,107,230,.12); display: inline-flex; align-items: center; justify-content: center; color: var(--c-primary); font-size: 11px; font-weight: 700; }
/* 指标大字 */
.metric-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 20px; }
.metric { background: var(--c-bg); border: 1px solid var(--c-line-soft); border-radius: 16px; padding: 26px 22px; text-align: center; }
.metric .v { font-size: 30px; font-weight: 700; letter-spacing: -.02em; color: var(--c-ink); font-variant-numeric: tabular-nums; }
.metric .v .u { font-size: 15px; color: var(--c-mute); }
.metric .l { color: var(--c-mute); font-size: 13px; margin-top: 6px; }
/* 灰底内容卡 */
.panel { background: var(--c-bg-alt); border-radius: var(--r-card); padding: 40px 36px; }
.panel h3 { font-size: 20px; margin-bottom: 12px; }
/* 案例卡 */
.case-card { border: 1px solid var(--c-line-soft); border-radius: var(--r-card); overflow: hidden; }
.case-card .top { display: flex; align-items: center; gap: 22px; padding: 26px 28px; background: #fff; }
.case-card .top .pic { flex: none; width: 220px; aspect-ratio: 3/2; border-radius: 12px; overflow: hidden; background: var(--c-bg-alt); display:flex; align-items:center; justify-content:center; }
.case-card .top .pic img { width:100%; height:100%; object-fit: cover; }
.case-card h3 { font-size: 18px; margin-bottom: 6px; }
.case-card .meta { color: var(--c-mute); font-size: 14px; }
.case-card .grid3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 1px; background: var(--c-line-soft); }
.case-card .grid3 > div { background: var(--c-bg-alt); padding: 18px 22px; }
.case-card .grid3 h4 { font-size: 13px; color: var(--c-primary); margin-bottom: 8px; }
.case-card .grid3 p { font-size: 14px; color: var(--c-text); line-height: 1.6; }
@media (max-width: 900px) { .case-card .top { flex-direction: column; align-items: flex-start; } .case-card .top .pic { width: 100%; } .case-card .grid3 { grid-template-columns: 1fr; } }
/* 团队卡 */
.team-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.team-card { background:#fff; border:1px solid var(--c-line-soft); border-radius: var(--r-card); padding: 28px; text-align:center; }
.team-card .ph { width: 76px; height: 76px; margin: 0 auto 16px; border-radius: 50%; background: linear-gradient(135deg,#1E6BE6,#22C55E); color:#fff; display:flex; align-items:center; justify-content:center; font-size:26px; font-weight:700; }
.team-card h3 { font-size: 17px; }
.team-card .role { color: var(--c-primary); font-size: 13px; margin: 6px 0 12px; }
.team-card p { color: var(--c-mute); font-size: 14px; line-height:1.7; text-align:left; }
@media (max-width:900px){ .team-grid{ grid-template-columns:1fr; } }
/* 二维码 */
.qr-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(220px,1fr)); gap:20px; }
.qr-card { border:1px solid var(--c-line-soft); border-radius: var(--r-card); background:#fff; padding:26px; text-align:center; }
.qr-card img { max-width:150px; margin:0 auto 12px; }
.qr-card h4 { font-size: 15px; margin-bottom: 6px; }
.qr-card p { color: var(--c-mute); font-size: 13px; line-height: 1.7; }
/* 联系信息行 */
.info-line { display:flex; align-items:center; gap:12px; border:1px solid var(--c-line-soft); border-radius:14px; padding:18px 20px; background:#fff; }
.info-line .ic { flex:none; width:42px; height:42px; border-radius:12px; background: rgba(30,107,230,.08); color:var(--c-primary); display:flex; align-items:center; justify-content:center; }
.info-line .ic svg { width:22px; height:22px; stroke:currentColor; fill:none; stroke-width:1.7; stroke-linecap:round; stroke-linejoin:round; }
.info-line h4 { font-size:14px; color:var(--c-mute); font-weight:500; }
.info-line p { font-size:16px; font-weight:600; }
/* 图片白框（产品图衬底） */
.img-plate { background:#fff; border:1px solid var(--c-line-soft); border-radius:14px; padding:18px; display:flex; align-items:center; justify-content:center; }