/* ============================================================
   智可派机器人 Kepai Robotics — Global Styles
   Design language: clean, minimal, big rounded cards, blue accent
   ============================================================ */

:root {
  --blue-900: #0b2a6b;
  --blue-800: #10398f;
  --blue-700: #1546c4;
  --blue-600: #1f5fe8;
  --blue-500: #2f73f5;
  --cyan-400: #27b6f2;
  --ink-900: #0c1730;
  --ink-800: #16233f;
  --ink-700: #2b3a57;
  --ink-500: #55617a;
  --ink-400: #7d8aa3;
  --ink-300: #aab4c7;
  --bg: #ffffff;
  --bg-soft: #f4f7fc;
  --bg-tint: #eef4ff;
  --line: #e6ecf6;
  --radius-sm: 14px;
  --radius: 22px;
  --radius-lg: 30px;
  --radius-xl: 40px;
  --shadow-sm: 0 4px 16px rgba(16, 41, 88, .06);
  --shadow: 0 18px 50px -18px rgba(18, 52, 110, .18);
  --shadow-blue: 0 20px 44px -16px rgba(31, 95, 232, .42);
  --container: 1200px;
  --header-h: 76px;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro SC", "SF Pro Text",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
  color: var(--ink-800);
  background: var(--bg);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

.container {
  width: min(var(--container), calc(100% - 48px));
  margin: 0 auto;
}

/* ---------- Typography ---------- */
h1, h2, h3, h4 { color: var(--ink-900); line-height: 1.22; font-weight: 800; letter-spacing: -.01em; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--blue-600);
  background: var(--bg-tint);
  padding: 7px 16px;
  border-radius: 999px;
}
.eyebrow::before {
  content: "";
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--blue-500);
  box-shadow: 0 0 0 4px rgba(47, 115, 245, .15);
}
.eyebrow.on-dark { background: rgba(255,255,255,.12); color: #9cc1ff; }
.eyebrow.on-dark::before { background: #7db0ff; box-shadow: 0 0 0 4px rgba(125,176,255,.18); }

.section { padding: 104px 0; }
.section.soft { background: var(--bg-soft); }

.section-head { max-width: 720px; margin: 0 auto 56px; text-align: center; }
.section-head h2 { font-size: clamp(28px, 3.4vw, 42px); margin: 18px 0 14px; }
.section-head p { color: var(--ink-500); font-size: 17px; }
.section-head.left { margin-left: 0; text-align: left; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: 52px;
  padding: 0 30px;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 700;
  white-space: nowrap;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), background .25s, color .25s;
}
.btn .arrow { transition: transform .25s var(--ease); }
.btn:hover .arrow { transform: translateX(4px); }

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--blue-500), var(--blue-700));
  box-shadow: var(--shadow-blue);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 26px 50px -16px rgba(31, 95, 232, .55); }

.btn-light {
  color: var(--blue-700);
  background: #fff;
  box-shadow: 0 12px 30px -12px rgba(12, 23, 48, .25);
}
.btn-light:hover { transform: translateY(-2px); }

.btn-ghost {
  color: var(--ink-800);
  background: #fff;
  border: 1.5px solid var(--line);
}
.btn-ghost:hover { border-color: var(--blue-500); color: var(--blue-600); transform: translateY(-2px); }

.btn-ghost-white {
  color: #fff;
  background: rgba(255,255,255,.08);
  border: 1.5px solid rgba(255,255,255,.45);
  backdrop-filter: blur(6px);
}
.btn-ghost-white:hover { background: rgba(255,255,255,.18); transform: translateY(-2px); }

.link-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--blue-600);
  font-weight: 700;
  font-size: 15px;
  transition: gap .25s var(--ease);
}
.link-more:hover { gap: 11px; }

/* ============================================================
   Header
   ============================================================ */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--header-h);
  z-index: 100;
  transition: background .3s, box-shadow .3s, border-color .3s;
  border-bottom: 1px solid transparent;
}
.site-header .container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.header-logo img { height: 52px; width: auto; }
.header-logo { display: flex; align-items: center; gap: 10px; }

.main-nav { display: flex; align-items: center; gap: 6px; }
.main-nav a {
  position: relative;
  padding: 9px 16px;
  font-size: 15.5px;
  font-weight: 600;
  color: var(--ink-700);
  border-radius: 999px;
  transition: color .2s, background .2s;
}
.main-nav a:hover { color: var(--blue-600); }
.main-nav a.active { color: var(--blue-600); background: var(--bg-tint); }

.header-cta { display: flex; align-items: center; gap: 12px; }

/* language switch */
.lang-switch {
  display: inline-flex; align-items: center; gap: 6px;
  height: 44px; padding: 0 16px;
  border: 1.5px solid var(--line);
  border-radius: 999px;
  font-size: 14px; font-weight: 700; letter-spacing: .04em;
  color: var(--ink-700);
  background: #fff;
  transition: border-color .2s, color .2s, background .2s;
}
.lang-switch:hover { border-color: var(--blue-500); color: var(--blue-600); background: var(--bg-tint); }
.lang-switch svg { width: 16px; height: 16px; }
.header-cta .btn { height: 44px; padding: 0 22px; font-size: 15px; }

.nav-toggle {
  display: none;
  width: 46px; height: 46px;
  border-radius: 14px;
  border: 1.5px solid var(--line);
  background: #fff;
  position: relative;
}
.nav-toggle span {
  position: absolute; left: 50%; top: 50%;
  width: 20px; height: 2px;
  background: var(--ink-800);
  border-radius: 2px;
  transform: translate(-50%, -50%);
  transition: transform .3s, opacity .3s;
}
.nav-toggle span::before,
.nav-toggle span::after {
  content: ""; position: absolute; left: 0;
  width: 20px; height: 2px;
  background: var(--ink-800);
  border-radius: 2px;
  transition: transform .3s;
}
.nav-toggle span::before { transform: translateY(-6px); }
.nav-toggle span::after { transform: translateY(6px); }

/* solid header on subpages (their hero bands are dark blue) */
body:not(.home) .site-header {
  background: rgba(255,255,255,.92);
  backdrop-filter: saturate(180%) blur(16px);
  border-bottom-color: var(--line);
  box-shadow: 0 8px 30px -22px rgba(12, 23, 48, .35);
}

/* transparent over home hero (hero top strip is white → use dark text/logo) */
body.home .site-header:not(.scrolled) { background: transparent; }

.header-logo .logo-light { display: none; }

.site-header.scrolled {
  background: rgba(255,255,255,.9);
  backdrop-filter: saturate(180%) blur(16px);
  box-shadow: 0 8px 30px -18px rgba(12, 23, 48, .25);
  border-bottom-color: var(--line);
}

/* ============================================================
   Hero
   ============================================================ */
.hero {
  position: relative;
  z-index: 0; /* stacking context: keeps this background below the negative-z media layers */
  min-height: 100vh;
  display: flex;
  align-items: center;
  color: #fff;
  overflow: hidden;
  padding: calc(var(--header-h) + 40px) 0 70px;
  background: #ffffff; /* white strip behind the fixed header */
}
/* media starts below the fixed header so it never sits under logo/nav */
.hero-bg { position: absolute; inset: var(--header-h) 0 0 0; z-index: -2; overflow: hidden; }
.hero-bg img { width: 100%; height: 100%; object-fit: cover; }
.hero-bg::after {
  content: "";
  position: absolute; inset: 0;
  background:
    linear-gradient(90deg, rgba(7,20,52,.82) 0%, rgba(7,20,52,.55) 45%, rgba(7,20,52,.15) 100%),
    linear-gradient(0deg, rgba(7,20,52,.55), transparent 45%);
}

/* hero promo video carousel (layers above the fallback photo) */
.hero-videos { position: absolute; inset: 0; }
.hero-videos video {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 1.1s ease;
}
.hero-videos video.is-active { opacity: 1; }

/* carousel progress dots */
.hero-video-dots {
  position: absolute; left: 50%; bottom: 26px;
  transform: translateX(-50%);
  display: none; gap: 8px; z-index: 2;
}
.hero-video-dots.on { display: flex; }
.hero-video-dots i {
  width: 8px; height: 8px; border-radius: 999px;
  background: rgba(255,255,255,.4);
  transition: width .35s, background .35s;
}
.hero-video-dots i.active { width: 24px; background: #fff; }

/* slow ken-burns drift on the hero photo */
.hero-bg img { animation: heroKenBurns 26s ease-in-out infinite alternate; transform-origin: 68% 42%; }
@keyframes heroKenBurns {
  from { transform: scale(1) translate(0, 0); }
  to   { transform: scale(1.09) translate(-1.4%, 1%); }
}

/* floating light orbs */
.hero-orbs { position: absolute; inset: 0; z-index: -1; overflow: hidden; pointer-events: none; }
.hero-orbs .orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: .5;
  will-change: transform;
}
.hero-orbs .orb-1 {
  width: 420px; height: 420px; right: 8%; top: 6%;
  background: radial-gradient(circle, rgba(86,150,255,.55), transparent 65%);
  animation: orbFloat1 14s ease-in-out infinite;
}
.hero-orbs .orb-2 {
  width: 320px; height: 320px; left: 30%; bottom: -8%;
  background: radial-gradient(circle, rgba(86,214,255,.4), transparent 65%);
  animation: orbFloat2 18s ease-in-out infinite;
}
.hero-orbs .orb-3 {
  width: 220px; height: 220px; left: 6%; top: 18%;
  background: radial-gradient(circle, rgba(125,176,255,.45), transparent 65%);
  animation: orbFloat1 11s ease-in-out -4s infinite reverse;
}
@keyframes orbFloat1 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50%      { transform: translate(-46px, 34px) scale(1.12); }
}
@keyframes orbFloat2 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50%      { transform: translate(52px, -38px) scale(.92); }
}

/* particle network canvas */
.hero-particles {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  z-index: -1;
  pointer-events: none;
}

@media (prefers-reduced-motion: reduce) {
  .hero-bg img, .hero-orbs .orb { animation: none; }
}
.hero-inner { max-width: 720px; }
.hero h1 {
  color: #fff;
  font-size: clamp(34px, 4.8vw, 58px);
  line-height: 1.22;
  font-weight: 800;
  letter-spacing: -.015em;
  margin: 22px 0 20px;
}
.hero h1 .accent {
  background: linear-gradient(90deg, #7db0ff, #56d6ff);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero p.lead {
  font-size: clamp(14px, 1.25vw, 16.5px);
  color: rgba(255,255,255,.88);
  max-width: 560px;
  margin-bottom: 36px;
}
/* hero lead keyword highlight */
.hero p.lead .hl {
  color: #8db4ff;
  font-weight: 700;
  text-shadow: 0 0 22px rgba(96, 148, 255, .45);
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; }

.hero-stats {
  display: flex;
  gap: 44px;
  margin-top: 64px;
  padding-top: 30px;
  border-top: 1px solid rgba(255,255,255,.22);
  flex-wrap: wrap;
}
.hero-stats .num {
  font-size: clamp(28px, 2.6vw, 38px);
  font-weight: 800;
  line-height: 1.1;
}
.hero-stats .label { font-size: 14px; color: rgba(255,255,255,.75); margin-top: 4px; }

.hero-scroll {
  position: absolute;
  bottom: 26px; left: 50%;
  transform: translateX(-50%);
  font-size: 12px;
  letter-spacing: .2em;
  color: rgba(255,255,255,.7);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
}
.hero-scroll i {
  width: 22px; height: 36px;
  border: 1.5px solid rgba(255,255,255,.55);
  border-radius: 12px;
  position: relative;
}
.hero-scroll i::after {
  content: ""; position: absolute; top: 7px; left: 50%;
  width: 3px; height: 7px; margin-left: -1.5px;
  background: #fff; border-radius: 3px;
  animation: scrollDot 1.8s var(--ease) infinite;
}
@keyframes scrollDot {
  0% { opacity: 1; transform: translateY(0); }
  70% { opacity: 0; transform: translateY(12px); }
  100% { opacity: 0; }
}

/* ============================================================
   Stats band
   ============================================================ */
.stats-band { margin-top: -52px; position: relative; z-index: 5; }
.stats-card {
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  padding: 14px 0;
}
.stats-card .item {
  text-align: center;
  padding: 34px 24px;
  position: relative;
}
.stats-card .item + .item::before {
  content: ""; position: absolute; left: 0; top: 50%;
  transform: translateY(-50%);
  height: 56px; width: 1px; background: var(--line);
}
.stats-card .num {
  font-size: clamp(32px, 3vw, 44px);
  font-weight: 800;
  color: var(--blue-700);
  line-height: 1;
}
.stats-card .num em { font-style: normal; font-size: .62em; color: var(--blue-500); }
.stats-card .label { color: var(--ink-500); font-size: 15px; margin-top: 10px; }

/* ============================================================
   Product cards
   ============================================================ */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.product-card {
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s;
}
.product-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow);
  border-color: transparent;
}
.product-card .thumb {
  position: relative;
  aspect-ratio: 4 / 3;
  background: linear-gradient(160deg, #f6f9ff, #eaf1ff);
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
.product-card .thumb img {
  height: 88%;
  width: auto;
  max-width: 90%;
  object-fit: contain;
  transition: transform .5s var(--ease);
}
.product-card:hover .thumb img { transform: scale(1.05); }
.product-card .tag {
  position: absolute; top: 16px; left: 16px;
  background: rgba(19, 70, 196, .92);
  color: #fff;
  font-size: 12.5px; font-weight: 700;
  padding: 5px 13px; border-radius: 999px;
}
.product-card .body { padding: 26px 26px 28px; display: flex; flex-direction: column; flex: 1; }
.product-card h3 { font-size: 21px; margin-bottom: 8px; }
.product-card .desc { color: var(--ink-500); font-size: 14.5px; flex: 1; }
.product-card .specs { display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0 22px; }
.product-card .specs span {
  font-size: 12.5px;
  color: var(--ink-700);
  background: var(--bg-soft);
  border: 1px solid var(--line);
  padding: 4px 12px;
  border-radius: 999px;
}

/* ============================================================
   Features / advantages
   ============================================================ */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.feature-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: "";
  position: absolute; right: -50px; top: -50px;
  width: 150px; height: 150px;
  background: radial-gradient(circle, rgba(47,115,245,.12), transparent 70%);
  opacity: 0; transition: opacity .35s;
}
.feature-card:hover { transform: translateY(-8px); box-shadow: var(--shadow); }
.feature-card:hover::before { opacity: 1; }
.feature-card .icon {
  width: 62px; height: 62px;
  border-radius: 18px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--blue-500), var(--blue-700));
  color: #fff;
  margin-bottom: 24px;
  box-shadow: var(--shadow-blue);
}
.feature-card .icon svg { width: 30px; height: 30px; }
.feature-card .idx {
  position: absolute; top: 30px; right: 30px;
  font-size: 44px; font-weight: 800;
  color: var(--bg-tint);
  line-height: 1;
}
.feature-card h3 { font-size: 21px; margin-bottom: 12px; }
.feature-card p { color: var(--ink-500); font-size: 15px; }

/* ============================================================
   Split (about teaser / CTA media)
   ============================================================ */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.split-media {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.split-media img { width: 100%; aspect-ratio: 5/4; object-fit: cover; }
.split-media .float-badge {
  position: absolute; left: 24px; bottom: 24px;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(10px);
  border-radius: var(--radius);
  padding: 18px 22px;
  display: flex; align-items: center; gap: 14px;
  box-shadow: var(--shadow-sm);
}
.split-media .float-badge .b-num { font-size: 26px; font-weight: 800; color: var(--blue-700); }
.split-media .float-badge .b-text { font-size: 13px; color: var(--ink-500); line-height: 1.4; }

.split-body h2 { font-size: clamp(28px, 3vw, 38px); margin: 18px 0 18px; }
.split-body > p { color: var(--ink-500); font-size: 16.5px; margin-bottom: 16px; }
.check-list { margin: 26px 0 32px; display: grid; gap: 14px; }
.check-list li { display: flex; gap: 12px; align-items: flex-start; color: var(--ink-700); font-size: 15.5px; }
.check-list .tick {
  flex: 0 0 24px; width: 24px; height: 24px;
  border-radius: 50%;
  background: var(--bg-tint);
  color: var(--blue-600);
  display: flex; align-items: center; justify-content: center;
  margin-top: 2px;
}
.check-list .tick svg { width: 13px; height: 13px; }

/* ============================================================
   Applications
   ============================================================ */
.app-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.app-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  min-height: 440px;
  display: flex;
  align-items: flex-end;
  color: #fff;
}
.app-card img {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .6s var(--ease);
}
.app-card::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(0deg, rgba(8,20,48,.9) 0%, rgba(8,20,48,.32) 50%, rgba(8,20,48,.05) 100%);
  transition: background .4s;
}
.app-card:hover img { transform: scale(1.07); }
.app-card .app-body {
  position: relative;
  z-index: 1;
  padding: 30px 28px;
  width: 100%;
}
.app-card .app-icon {
  width: 46px; height: 46px;
  border-radius: 14px;
  background: rgba(255,255,255,.16);
  backdrop-filter: blur(8px);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
}
.app-card .app-icon svg { width: 23px; height: 23px; }
.app-card h3 { color: #fff; font-size: 22px; margin-bottom: 8px; }
.app-card p { font-size: 14.5px; color: rgba(255,255,255,.85); }

/* ============================================================
   News
   ============================================================ */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.news-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex; flex-direction: column;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease);
}
.news-card:hover { transform: translateY(-8px); box-shadow: var(--shadow); }
.news-card .thumb { aspect-ratio: 16/9; overflow: hidden; }
.news-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s var(--ease); }
.news-card:hover .thumb img { transform: scale(1.06); }
.news-card .body { padding: 24px 26px 26px; display: flex; flex-direction: column; flex: 1; }
.news-card .meta { display: flex; align-items: center; gap: 12px; font-size: 13px; color: var(--ink-400); margin-bottom: 12px; }
.news-card .meta .date { color: var(--blue-600); font-weight: 700; }
.news-card h3 {
  font-size: 18px; line-height: 1.45; margin-bottom: 10px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color .2s;
}
.news-card:hover h3 { color: var(--blue-600); }
.news-card p {
  color: var(--ink-500); font-size: 14px; flex: 1;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-card .link-more { margin-top: 16px; }

/* ============================================================
   CTA banner
   ============================================================ */
.cta-banner {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  padding: 84px 70px;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}
.cta-banner .cta-bg { position: absolute; inset: 0; z-index: -1; }
.cta-banner .cta-bg img { width: 100%; height: 100%; object-fit: cover; }
.cta-banner .cta-bg::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(100deg, rgba(9,24,64,.94), rgba(13,45,128,.86) 55%, rgba(31,95,232,.72));
}
.cta-banner h2 { color: #fff; font-size: clamp(26px, 3vw, 38px); margin-bottom: 12px; }
.cta-banner p { color: rgba(255,255,255,.85); font-size: 16.5px; max-width: 560px; }

/* ============================================================
   Page banner (inner pages)
   ============================================================ */
.page-banner {
  position: relative;
  padding: calc(var(--header-h) + 76px) 0 76px;
  background: linear-gradient(135deg, #0d1f4d, #1346b3 60%, #1f5fe8);
  color: #fff;
  overflow: hidden;
}
.page-banner::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(circle at 85% 20%, rgba(86,214,255,.28), transparent 45%),
    radial-gradient(circle at 10% 90%, rgba(47,115,245,.4), transparent 45%);
}
.page-banner .container { position: relative; }
.page-banner .crumbs { font-size: 14px; color: rgba(255,255,255,.7); margin-bottom: 14px; }
.page-banner .crumbs a:hover { color: #fff; }
.page-banner h1 { color: #fff; font-size: clamp(32px, 4vw, 50px); }
.page-banner p { margin-top: 14px; font-size: 17px; color: rgba(255,255,255,.85); max-width: 640px; }

/* ============================================================
   Spec table (product detail)
   ============================================================ */
.spec-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  font-size: 15px;
}
.spec-table tr:nth-child(odd) td { background: #f7faff; }
.spec-table tr:nth-child(even) td { background: #fff; }
.spec-table td { padding: 15px 22px; border-bottom: 1px solid var(--line); }
.spec-table tr:last-child td { border-bottom: none; }
.spec-table td.k {
  width: 32%;
  font-weight: 700;
  color: var(--blue-800);
  background: var(--bg-tint) !important;
}
.spec-table td.v { color: var(--ink-700); }

.gallery {
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: linear-gradient(160deg, #f6f9ff, #e9f1ff);
  border: 1px solid var(--line);
}
.gallery img.main {
  width: 100%;
  aspect-ratio: 1/1;
  object-fit: contain;
  padding: 30px;
}
.gallery .thumbs { display: flex; gap: 12px; padding: 0 24px 24px; }
.gallery .thumbs button {
  width: 84px; height: 84px;
  border-radius: var(--radius-sm);
  border: 2px solid var(--line);
  overflow: hidden;
  background: #fff;
  transition: border-color .2s;
}
.gallery .thumbs button.active,
.gallery .thumbs button:hover { border-color: var(--blue-500); }
.gallery .thumbs img { width: 100%; height: 100%; object-fit: contain; }

.highlight-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-top: 36px; }
.highlight-item {
  display: flex; gap: 16px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
}
.highlight-item .h-ic {
  flex: 0 0 48px; width: 48px; height: 48px;
  border-radius: 14px;
  background: var(--bg-tint);
  color: var(--blue-600);
  display: flex; align-items: center; justify-content: center;
}
.highlight-item .h-ic svg { width: 24px; height: 24px; }
.highlight-item h4 { font-size: 17px; margin-bottom: 5px; }
.highlight-item p { font-size: 14px; color: var(--ink-500); }

/* scenario rows on solutions page */
.scenario {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  border-radius: var(--radius-xl);
}
.scenario + .scenario { margin-top: 64px; }
.scenario .media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.scenario .media img { width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.scenario.reverse .media { order: 2; }
.scenario .media.product-shot { background: linear-gradient(160deg, #f6f9ff, #e7efff); }
.scenario .media.product-shot img { object-fit: contain; padding: 34px; mix-blend-mode: multiply; }
.scenario h3 { font-size: clamp(24px, 2.4vw, 32px); margin: 14px 0 14px; }
.scenario .en { font-size: 14px; letter-spacing: .12em; text-transform: uppercase; color: var(--blue-600); font-weight: 700; }
.scenario p { color: var(--ink-500); font-size: 16px; margin-bottom: 14px; }

/* ============================================================
   About page
   ============================================================ */
.about-story p { color: var(--ink-500); font-size: 16.5px; margin-bottom: 18px; }
.founder-card {
  margin-top: 40px;
  background: linear-gradient(135deg, var(--blue-700), var(--blue-500));
  border-radius: var(--radius-lg);
  color: #fff;
  padding: 36px 40px;
  position: relative;
  overflow: hidden;
}
.founder-card::after {
  content: "\201C";
  position: absolute; right: 30px; top: -20px;
  font-size: 160px; line-height: 1;
  color: rgba(255,255,255,.1);
  font-family: Georgia, serif;
}
.founder-card h4 { color: #fff; font-size: 19px; margin-bottom: 10px; }
.founder-card p { color: rgba(255,255,255,.9); font-size: 15px; }

.partner-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 16px;
}
.partner-grid .p-item {
  height: 84px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  color: var(--ink-400);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: .02em;
  background: #fff;
  transition: color .25s, box-shadow .25s, transform .25s;
}
.partner-grid .p-item:hover { color: var(--blue-600); box-shadow: var(--shadow-sm); transform: translateY(-3px); }

.values-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }
.value-card {
  border-radius: var(--radius-lg);
  padding: 44px 40px;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.value-card.blue { background: linear-gradient(135deg, #1443b8, #2f73f5); }
.value-card.dark { background: linear-gradient(135deg, #101c3d, #20335f); }
.value-card .v-label { font-size: 13px; letter-spacing: .18em; text-transform: uppercase; color: rgba(255,255,255,.65); font-weight: 700; }
.value-card h3 { color: #fff; font-size: 26px; margin: 12px 0 12px; }
.value-card p { color: rgba(255,255,255,.85); font-size: 15.5px; }

/* ============================================================
   Footer
   ============================================================ */
/* ===== Footer（参考 BXI 页底：品牌区 + 分栏链接 + 社交图标 + 法律行） ===== */
.site-footer { background: #0d1730; color: rgba(255,255,255,.72); padding: 72px 0 40px; }
.footer-grid { display: grid; grid-template-columns: 1.7fr 1fr 1fr 1fr 1.2fr; gap: 44px; }
.footer-brand .footer-logo { display: flex; align-items: center; gap: 12px; height: 21px; margin-bottom: 20px; }
.footer-brand .footer-logo img { height: 34px; filter: brightness(0) invert(1); opacity: .95; }
.footer-brand .footer-logo span { color: #fff; font-size: 19px; font-weight: 700; letter-spacing: .02em; }
.footer-brand .slogan { font-size: 14.5px; color: rgba(255,255,255,.6); line-height: 1.7; margin-bottom: 8px; }
.footer-brand .slogan strong { color: #fff; font-weight: 600; letter-spacing: .04em; }
.footer-col h4 { color: #fff; font-size: 15px; font-weight: 600; margin-bottom: 20px; letter-spacing: .04em; }
.footer-col ul { display: grid; gap: 12px; }
.footer-col a { font-size: 14px; color: rgba(255,255,255,.62); transition: color .2s; }
.footer-col a:hover { color: #7db0ff; }
.footer-col .addr { font-size: 13.5px; color: rgba(255,255,255,.5); line-height: 1.65; }

.brand-legal { margin-top: 22px; font-size: 12.5px; color: rgba(255,255,255,.42); display: grid; gap: 6px; line-height: 1.6; }
.brand-legal a { color: rgba(255,255,255,.5); transition: color .2s; }
.brand-legal a:hover { color: #7db0ff; }
.brand-legal .sep { margin: 0 8px; color: rgba(255,255,255,.22); }
@media (max-width: 1024px) { .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; } }
@media (max-width: 640px) {
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
}

/* ============================================================
   AI-generated images (async generation fallback)
   ============================================================ */
img[data-gen] { background: linear-gradient(135deg, #dce7ff, #c4d8ff); }
.hero-bg img[data-gen] { background: #0a1c46; }
.cta-bg img[data-gen] { background: #0d2a72; }
.split-media img[data-gen],
.scenario .media img[data-gen] { background: linear-gradient(135deg, #dce7ff, #c4d8ff); }
.app-card { background: linear-gradient(160deg, #1443b8, #1f5fe8); }
.news-card .thumb { background: linear-gradient(135deg, #dce7ff, #c4d8ff); }
img[data-gen].pending { opacity: 0; }

/* ============================================================
   Reveal animations
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(34px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
.reveal.in { opacity: 1; transform: none; }
.reveal.delay-1 { transition-delay: .1s; }
.reveal.delay-2 { transition-delay: .2s; }
.reveal.delay-3 { transition-delay: .3s; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 1024px) {
  .product-grid, .feature-grid, .app-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
  .partner-grid { grid-template-columns: repeat(4, 1fr); }
  .split, .scenario { gap: 40px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
}

@media (max-width: 860px) {
  .section { padding: 76px 0; }
  .container { width: min(100% - 36px, var(--container)); }

  .main-nav, .header-cta .btn { display: none; }
  .nav-toggle { display: block; }

  body.nav-open { overflow: hidden; }
  .main-nav.mobile-open {
    display: flex;
    position: fixed;
    inset: var(--header-h) 0 0 0;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 24px 28px;
    z-index: 99;
  }
  .main-nav.mobile-open a {
    font-size: 19px;
    padding: 14px 18px;
    border-radius: 14px;
    color: var(--ink-800) !important;
  }
  .main-nav.mobile-open a.active { background: var(--bg-tint); }
  body.nav-open .nav-toggle span { background: transparent; }
  body.nav-open .nav-toggle span::before { transform: rotate(45deg); background: var(--ink-800); }
  body.nav-open .nav-toggle span::after { transform: rotate(-45deg); background: var(--ink-800); }

  .hero { min-height: auto; padding-bottom: 90px; }
  .hero-stats { gap: 28px; margin-top: 44px; }
  .stats-band { margin-top: -40px; }
  .stats-card { grid-template-columns: 1fr; }
  .stats-card .item + .item::before {
    left: 50%; top: 0; transform: translateX(-50%);
    height: 1px; width: 56px;
  }
  .product-grid, .feature-grid, .app-grid, .news-grid { grid-template-columns: 1fr; }
  .app-card { min-height: 340px; }
  .split, .scenario { grid-template-columns: 1fr; gap: 32px; }
  .scenario.reverse .media { order: 0; }
  .highlight-grid, .values-grid { grid-template-columns: 1fr; }
  .partner-grid { grid-template-columns: repeat(3, 1fr); }
  .cta-banner { flex-direction: column; align-items: flex-start; padding: 52px 34px; }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
  .spec-table td.k { width: 42%; }
  .gallery .thumbs button { width: 64px; height: 64px; }
}

@media (max-width: 480px) {
  .hero-actions .btn { width: 100%; }
  .partner-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ===== 页脚社交图标（联系我们栏内） ===== */
.footer-social { display: flex; gap: 12px; margin-top: 18px; }
.footer-social a, .footer-social button {
  width: 40px; height: 40px; padding: 0; border: 1px solid rgba(255,255,255,.16); border-radius: 50%;
  background: rgba(255,255,255,.05); color: rgba(255,255,255,.78); cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background .25s, color .25s, transform .25s, border-color .25s;
}
.footer-social svg { width: 18px; height: 18px; fill: currentColor; }
.footer-social a:hover, .footer-social button:hover {
  background: var(--blue-500); border-color: var(--blue-500); color: #fff; transform: translateY(-2px);
}
.social-wrap { position: relative; }
.social-pop {
  position: absolute; bottom: calc(100% + 14px); left: 50%;
  width: 150px; padding: 10px; background: #fff; border-radius: 14px;
  box-shadow: 0 14px 40px rgba(0,0,0,.3); text-align: center; z-index: 10;
  opacity: 0; visibility: hidden; transform: translateX(-50%) translateY(6px);
  transition: opacity .25s, transform .25s, visibility .25s;
}
.social-pop::after {
  content: ""; position: absolute; top: 100%; left: 50%; transform: translateX(-50%);
  border: 7px solid transparent; border-top-color: #fff;
}
.social-wrap:hover .social-pop { opacity: 1; visibility: visible; transform: translateX(-50%); }
.social-pop img { width: 100%; border-radius: 8px; display: block; }
.social-pop span { display: block; margin-top: 6px; font-size: 12px; color: #5b6b8c; }