/* style-v2.css */
:root {
  /* 以明亮浅蓝与白色为主色调的全新高精科技感配色 */
  --bg-main: #FFFFFF;
  --bg-sub: #F3F8FC;
  --bg-card: #FFFFFF;
  --bg-nav: rgba(255, 255, 255, 0.85);
  
  --blue-primary: #0284C7;   /* 清澈的科技浅蓝 */
  --blue-dark: #0369A1;      /* 稍深浅蓝 */
  --blue-light: #E0F2FE;     /* 极浅蓝背景色 */
  --blue-glow: rgba(2, 132, 199, 0.08);
  
  --ink: #0F172A;            /* 深色文字 */
  --text-muted: #475569;     /* 次要文字 */
  --text-light: #64748B;
  --line: #E2E8F0;           /* 干净的基础分割线 */
  --line-tech: rgba(2, 132, 199, 0.15); /* 浅蓝科技质感线条 */
  
  --white: #FFFFFF;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg-main);
  color: var(--ink);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4 { margin: 0; font-family: var(--font-display); font-weight: 600; letter-spacing: -0.01em; }
p { margin: 0; }
button { font-family: inherit; cursor: pointer; }

/* 滚动显现系统 */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.active {
  opacity: 1;
  transform: translateY(0);
}
.stagger-1 { transition-delay: 0.08s; }
.stagger-2 { transition-delay: 0.16s; }
.stagger-3 { transition-delay: 0.24s; }
.stagger-4 { transition-delay: 0.32s; }

.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 32px;
}
section { scroll-margin-top: 84px; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--blue-primary);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
}
.eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--blue-primary);
  display: inline-block;
}

.text-gradient {
  background: linear-gradient(90deg, var(--blue-primary), #38bdf8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-size: 200% auto;
  animation: gradientFlow 4s linear infinite;
}
@keyframes gradientFlow {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* NAV 导航栏 */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: var(--bg-nav);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(2, 132, 199, 0.08);
  transition: all 0.3s ease;
}
.nav__inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 16px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  display: flex;
  align-items: center;
}
.brand img {
  height: 48px;
  width: auto;
  object-fit: contain;
}
.nav__links {
  display: flex;
  align-items: center;
  gap: 36px;
}
.nav__links a {
  font-size: 14px;
  color: var(--text-muted);
  transition: color .2s ease, transform .2s ease;
  white-space: nowrap;
  font-weight: 500;
}
.nav__links a:hover { 
  color: var(--blue-primary); 
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 24px;
  border-radius: 6px;
  font-size: 13.5px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: all .3s cubic-bezier(0.16, 1, 0.3, 1);
  white-space: nowrap;
}
.btn--primary {
  background: var(--blue-primary);
  color: var(--white);
  box-shadow: 0 4px 14px 0 rgba(2, 132, 199, 0.2);
}
.btn--primary:hover {
  background: var(--blue-dark);
  transform: translateY(-1.5px);
  box-shadow: 0 6px 20px 0 rgba(2, 132, 199, 0.3);
}
.btn--ghost {
  background: var(--white);
  border-color: var(--line);
  color: var(--text-muted);
}
.btn--ghost:hover {
  border-color: var(--blue-primary);
  color: var(--blue-primary);
  background: var(--bg-sub);
  transform: translateY(-1.5px);
}

.nav__toggle {
  display: none;
  width: 32px; height: 32px;
  border: none; background: transparent;
  position: relative;
}
.nav__toggle span {
  position: absolute; left: 6px; right: 6px; height: 1.5px; background: var(--ink);
}
.nav__toggle span:nth-child(1) { top: 11px; }
.nav__toggle span:nth-child(2) { top: 19px; }

/* HERO 头部 */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 80px 0 0;
  background: radial-gradient(circle at 80% 20%, var(--blue-light) 0%, transparent 50%), var(--white);
  overflow: hidden;
}
.hero__grid-bg {
  position: absolute; inset: 0; z-index: 0;
  background-image: linear-gradient(rgba(2, 132, 199, 0.03) 1px, transparent 1px), linear-gradient(90deg, rgba(2, 132, 199, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  mask-image: radial-gradient(ellipse 60% 60% at 50% 50%, black 40%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 60% 60% at 50% 50%, black 40%, transparent 100%);
}
.hero__canvas-wrap {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.85;
}
#interference { width: 100%; height: 100%; display: block; }
.hero__inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1.3fr; /* 统一在这里调整右侧视频区域大小 */
  gap: 64px;
  align-items: center;
  width: 100%;
}
.hero-label {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--blue-primary);
  letter-spacing: 0.25em;
  margin-bottom: 16px;
  text-transform: uppercase;
  font-weight: 700;
}
.hero h1 {
  font-size: clamp(52px, 7vw, 92px);
  line-height: 1.1;
  margin-bottom: 24px;
  color: var(--ink);
  letter-spacing: 0.05em;
}
.hero h1 .text-gradient {
  background: linear-gradient(90deg, var(--blue-primary), #0284c7, #38bdf8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-size: 200% auto;
  animation: gradientFlow 4s linear infinite;
  text-shadow: 0 10px 30px rgba(2, 132, 199, 0.25);
}
.hero__sub {
  font-size: 16.5px;
  color: var(--text-muted);
  max-width: 520px;
  margin-bottom: 40px;
  line-height: 1.8;
  font-weight: 400;
}
.hero__ctas { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-media {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  background: var(--ink);
  aspect-ratio: 16 / 9;
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.08);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.4s ease;
  display: block;
  border: 1px solid var(--line);
  max-width: 100%;
}
.hero-media:hover {
  transform: translateY(-6px);
  box-shadow: 0 30px 50px rgba(2, 132, 199, 0.12);
}
.hero-media video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.95;
}
.hero-media-badge {
  position: absolute;
  bottom: 20px;
  left: 20px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--line);
  padding: 6px 14px;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--blue-primary);
  font-weight: 600;
  letter-spacing: 0.05em;
}

.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--blue-primary);
  letter-spacing: 0.15em;
  z-index: 10;
  animation: bounce 2s infinite;
  transition: opacity 0.3s;
}
.scroll-indicator:hover {
  opacity: 0.7;
}
@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateY(0) translateX(-50%); }
  40% { transform: translateY(-10px) translateX(-50%); }
  60% { transform: translateY(-5px) translateX(-50%); }
}

/* STATS 统计条 */
.stats-banner {
  background: var(--white);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 56px 0;
  position: relative;
  z-index: 10;
}
.stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}
.stat__num {
  font-family: var(--font-display);
  font-size: clamp(32px, 4vw, 44px);
  color: var(--blue-primary);
  margin-bottom: 6px;
  letter-spacing: -0.02em;
  font-weight: 700;
}
.stat__label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* PRODUCTS 核心产品列表 */
.products { padding: 120px 0; }
.products-header-wrap {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 56px;
  gap: 24px;
}
.section-head h2 {
  font-size: clamp(28px, 4vw, 36px);
  margin-bottom: 14px;
  color: var(--ink);
}
.section-head p {
  color: var(--text-muted);
  font-size: 15px;
  max-width: 560px;
}

.filter-group {
  display: flex;
  gap: 6px;
  background: var(--bg-sub);
  padding: 4px;
  border-radius: 8px;
  border: 1px solid var(--line);
}
.filter-btn {
  background: transparent;
  border: none;
  padding: 6px 18px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  border-radius: 6px;
  transition: all 0.25s ease;
}
.filter-btn:hover { color: var(--ink); }
.filter-btn.active {
  background: var(--white);
  color: var(--blue-primary);
  box-shadow: 0 2px 8px rgba(2, 132, 199, 0.08);
  font-weight: 600;
}

.products__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  position: relative;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.card:hover {
  transform: translateY(-6px);
  border-color: rgba(2, 132, 199, 0.3);
  box-shadow: 0 20px 40px rgba(2, 132, 199, 0.05);
}
.card__img-wrap {
  height: 200px;
  background: var(--bg-sub);
  overflow: hidden;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid var(--line);
}
.card__img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.card:hover .card__img-wrap img {
  transform: scale(1.04);
}
.card__terminal {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--blue-primary);
  background: #0f172a;
  width: 100%;
  height: 100%;
  padding: 24px;
  line-height: 1.8;
}
.cmd-line { display: block; opacity: 0.9; }
.cursor::after { content: '█'; animation: blink 0.9s step-end infinite; margin-left: 2px; }
@keyframes blink { 50% { opacity: 0; } }

.card__content { padding: 28px 24px; }
.card__label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--blue-primary);
  letter-spacing: 0.05em;
  margin-bottom: 10px;
  text-transform: uppercase;
  font-weight: 600;
}
.card__title {
  font-size: 18px;
  margin-bottom: 10px;
  color: var(--ink);
}
.card__desc { font-size: 13.5px; color: var(--text-muted); line-height: 1.6; }

/* EMPTY STATE 云平台占位板 */
.empty-section {
  padding: 100px 0;
  background: var(--bg-sub);
  border-top: 1px solid var(--line);
  text-align: center;
}
.empty-state-box {
  margin: 40px auto 0;
  max-width: 540px;
  background: var(--white);
  border: 1px dashed rgba(2, 132, 199, 0.3);
  border-radius: 12px;
  padding: 50px 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  transition: all 0.3s ease;
}
.empty-state-box:hover {
  border-color: var(--blue-primary);
  box-shadow: 0 10px 25px rgba(2, 132, 199, 0.04);
}
.icon-glow {
  width: 52px;
  height: 52px;
  background: var(--blue-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--blue-primary);
}
.empty-text {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-light);
  letter-spacing: 0.14em;
}

/* TEAM 核心团队 */
.team {
  padding: 120px 0;
  background: var(--white);
  border-top: 1px solid var(--line);
}
.team__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  margin-top: 64px;
}
.team-item {
  text-align: center;
  transition: transform 0.4s ease;
}
.team-item:hover {
  transform: translateY(-8px);
}
.team-avatar {
  width: 140px;
  height: 140px;
  margin: 0 auto 24px;
  border-radius: 50%;
  overflow: hidden;
  position: relative;
  background: var(--bg-sub);
  box-shadow: 0 10px 25px rgba(15, 23, 42, 0.05);
}
.team-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.team-item:hover .team-avatar img {
  transform: scale(1.1);
}
.team-info {
  margin-bottom: 16px;
}
.team-name {
  font-size: 18px;
  color: var(--ink);
  font-weight: 600;
  margin-bottom: 4px;
}
.team-role {
  font-size: 13px;
  color: var(--blue-primary);
  font-weight: 500;
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}
.team-desc {
  font-size: 13.5px;
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 240px;
  margin: 0 auto;
}

/* NEWS / 发展历程 */
.news-timeline {
  padding: 120px 0;
  background: var(--bg-sub);
  position: relative;
  border-top: 1px solid var(--line);
}
.timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
}
.timeline::after {
  content: '';
  position: absolute;
  width: 2px;
  background: linear-gradient(to bottom, transparent, rgba(2, 132, 199, 0.2), rgba(2, 132, 199, 0.2), transparent);
  top: 0;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
}
.timeline-item {
  padding: 16px 40px;
  position: relative;
  width: 50%;
  margin-bottom: 24px;
}
.timeline-item:nth-child(odd) { left: 0; }
.timeline-item:nth-child(even) { left: 50%; }

.timeline-dot {
  position: absolute;
  width: 14px;
  height: 14px;
  background-color: var(--blue-primary);
  border: 3px solid var(--blue-light);
  border-radius: 50%;
  top: 45px;
  z-index: 2;
  box-shadow: 0 0 0 4px rgba(2, 132, 199, 0.08);
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.timeline-item:nth-child(odd) .timeline-dot { right: -7px; }
.timeline-item:nth-child(even) .timeline-dot { left: -7px; }

.timeline-item:hover .timeline-dot {
  background-color: var(--white);
  border-color: var(--blue-primary);
  box-shadow: 0 0 15px rgba(2, 132, 199, 0.4);
  transform: scale(1.3);
}

.timeline-content {
  padding: 32px;
  background: linear-gradient(145deg, var(--white), #f8fbff);
  border: 1px solid rgba(2, 132, 199, 0.1);
  border-radius: 12px;
  position: relative;
  box-shadow: 0 10px 30px rgba(2, 132, 199, 0.04);
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.timeline-content:hover {
  transform: translateY(-4px);
  box-shadow: 0 15px 40px rgba(2, 132, 199, 0.1);
  border-color: rgba(2, 132, 199, 0.25);
}
.timeline-date {
  font-family: var(--font-mono);
  font-size: 13px;
  color: #38bdf8;
  letter-spacing: 0.1em;
  margin-bottom: 12px;
  font-weight: 600;
  text-transform: uppercase;
}
.timeline-title {
  font-size: 17px;
  margin-bottom: 12px;
  color: var(--ink);
}

.timeline-image-wrap {
  margin-top: 16px;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid rgba(2, 132, 199, 0.1);
  background: var(--bg-sub);
  position: relative;
}
.timeline-image-wrap img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}
.timeline-content:hover .timeline-image-wrap img {
  transform: scale(1.05);
}
.timeline-desc {
  font-size: 13.5px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* JOIN 加入我们 */
.join {
  padding: 120px 0;
  background: var(--bg-sub);
  border-top: 1px solid var(--line);
}
.join-container {
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
}
.join-poster-wrap {
  width: 100%;
  max-width: 500px;
  margin: 0 auto 40px;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: 0 15px 35px rgba(15, 23, 42, 0.05);
  background: var(--white);
}
.join-poster-img {
  width: 100%;
  height: auto;
  display: block;
}
.join-links {
  display: flex;
  justify-content: center;
  gap: 48px;
  margin-top: 32px;
}
.join-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}
.join-icon-wrap {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--white);
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.join-btn:hover .join-icon-wrap {
  border-color: var(--blue-primary);
  color: var(--blue-primary);
  transform: translateY(-4px);
  box-shadow: 0 10px 20px rgba(2, 132, 199, 0.1);
}
.join-label {
  font-size: 13.5px;
  font-weight: 500;
  color: var(--text-muted);
  transition: color 0.25s;
}
.join-btn:hover .join-label { color: var(--blue-primary); }

/* ABOUT 关于我们 */
.about {
  padding: 120px 0;
  background: #0B1E2B;
  color: var(--white);
}
.about-content {
  text-align: center;
  max-width: 760px;
  margin: 0 auto;
}
.about-icon {
  width: 52px;
  height: 52px;
  background: rgba(2, 132, 199, 0.2);
  border: 1px solid var(--blue-primary);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 32px;
  color: var(--blue-primary);
}
.about__quote {
  font-family: var(--font-body);
  font-size: clamp(20px, 3vw, 26px);
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 40px;
  font-weight: 300;
}
.about__quote span {
  color: #38bdf8;
  font-weight: 600;
}
.about-divider {
  width: 60px;
  height: 1px;
  background: rgba(255,255,255,0.15);
  margin: 0 auto 40px;
}
.about-copyright {
  font-family: var(--font-mono);
  font-size: 12px;
  color: rgba(255,255,255,0.4);
  letter-spacing: 0.05em;
}

/* 响应式断点适配 */
@media (max-width: 920px) {
  /* 隐藏默认横向导航 */
  .nav__links { display: none; }
  
  /* 添加展开后的菜单样式 */
  .nav__links.is-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--bg-nav);
    padding: 24px 32px;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 10px 30px rgba(2, 132, 199, 0.1);
    align-items: flex-start;
    gap: 20px;
  }
  .nav__links.is-open a {
    font-size: 16px;
    width: 100%;
  }

  .nav .btn { display: none; }
  .nav__toggle { display: block; }
  .hero__inner { grid-template-columns: 1fr; gap: 48px; }
  .stats__grid { grid-template-columns: repeat(2, 1fr); row-gap: 32px; }
  .products-header-wrap { flex-direction: column; align-items: flex-start; }
  .products__grid { grid-template-columns: 1fr; max-width: 500px; margin: 0 auto; }
  .team__grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
}
@media (max-width: 600px) {
  .container { padding: 0 24px; }
  .hero { padding: 130px 0 70px; }
  .hero h1 { font-size: 38px; }
  .timeline::after { left: 24px; }
  .timeline-item { width: 100%; padding-left: 64px; padding-right: 0; }
  .timeline-item:nth-child(even) { left: 0; }
  .timeline-item:nth-child(odd) .timeline-dot,
  .timeline-item:nth-child(even) .timeline-dot {
    left: 17px;
    right: auto;
  }
  .team__grid { grid-template-columns: 1fr; max-width: 320px; margin: 0 auto; }
  .join-links { flex-direction: column; gap: 24px; align-items: center; }
}

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