/* ===========================================================
   上海极光启源智能科技有限公司 — 官网样式
   纯本地资源，无外部依赖
   =========================================================== */

:root {
  --bg: #060b18;
  --bg-soft: #0a1224;
  --bg-card: rgba(18, 30, 56, 0.62);
  --line: rgba(94, 152, 255, 0.16);
  --line-strong: rgba(94, 190, 255, 0.38);
  --txt: #e8eefc;
  --txt-dim: #9fb0d0;
  --txt-mute: #6e7f9e;
  --cyan: #2ee6ff;
  --blue: #4d7cff;
  --violet: #8b5cf6;
  --grad: linear-gradient(120deg, #2ee6ff 0%, #4d7cff 55%, #8b5cf6 100%);
  --radius: 14px;
  --shadow: 0 18px 50px rgba(0, 8, 30, 0.55);
  --maxw: 1180px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--txt);
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB",
    "Helvetica Neue", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { margin: 0; padding: 0; list-style: none; }

/* ---------- 背景层 ---------- */
.bg-layer {
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(900px 520px at 12% -6%, rgba(77, 124, 255, 0.22), transparent 62%),
    radial-gradient(760px 480px at 88% 4%, rgba(46, 230, 255, 0.14), transparent 60%),
    radial-gradient(700px 520px at 50% 100%, rgba(139, 92, 246, 0.12), transparent 65%),
    var(--bg);
}

.bg-grid {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(120, 170, 255, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120, 170, 255, 0.055) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(circle at 50% 22%, #000 0%, transparent 78%);
  -webkit-mask-image: radial-gradient(circle at 50% 22%, #000 0%, transparent 78%);
}

#dots {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.75;
}

/* ---------- 通用容器 ---------- */
.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

.gt {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------- 顶部导航 ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: rgba(6, 11, 24, 0.72);
  border-bottom: 1px solid var(--line);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 66px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  font-weight: 700;
  letter-spacing: 0.4px;
}

.brand .mark {
  width: 32px;
  height: 32px;
  border-radius: 9px;
  background: var(--grad);
  position: relative;
  flex: none;
  box-shadow: 0 0 20px rgba(64, 150, 255, 0.45);
}

.brand .mark::after {
  content: "";
  position: absolute;
  inset: 6px;
  border-radius: 4px;
  border: 1.6px solid rgba(6, 11, 24, 0.85);
  border-right-color: transparent;
  border-bottom-color: transparent;
}

.brand b { font-size: 16px; color: var(--txt); letter-spacing: 0.4px; }
.brand b + span {
  display: block;
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 2.2px;
  color: var(--txt-mute);
  text-transform: uppercase;
  line-height: 1.2;
}

.menu { display: flex; align-items: center; gap: 4px; }

.menu a {
  position: relative;
  padding: 8px 15px;
  font-size: 14px;
  color: var(--txt-dim);
  border-radius: 8px;
  transition: color 0.25s var(--ease), background 0.25s var(--ease);
}

.menu a:hover { color: var(--txt); background: rgba(94, 152, 255, 0.09); }

.menu a.on { color: #fff; }
.menu a.on::after {
  content: "";
  position: absolute;
  left: 15px;
  right: 15px;
  bottom: 1px;
  height: 2px;
  border-radius: 2px;
  background: var(--grad);
}

.burger {
  display: none;
  width: 40px;
  height: 34px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: transparent;
  cursor: pointer;
  padding: 8px 9px;
}
.burger i {
  display: block;
  height: 1.6px;
  background: var(--txt-dim);
  margin: 3px 0;
  border-radius: 2px;
  transition: 0.25s var(--ease);
}

/* ---------- Hero ---------- */
.hero { padding: 92px 0 78px; position: relative; }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 6px 15px;
  font-size: 12.5px;
  letter-spacing: 0.6px;
  color: #bcd4ff;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(46, 230, 255, 0.06);
}

.tag em {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 10px var(--cyan);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.35; transform: scale(0.75); }
}

h1.hero-t {
  margin: 26px 0 0;
  font-size: clamp(30px, 5.4vw, 58px);
  line-height: 1.22;
  letter-spacing: -0.5px;
  font-weight: 800;
}

.hero-sub {
  margin: 22px 0 0;
  max-width: 660px;
  font-size: 15.5px;
  color: var(--txt-dim);
}

.btns { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: 10px;
  font-size: 14.5px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: 0.28s var(--ease);
}

.btn.p {
  background: var(--grad);
  color: #041020;
  box-shadow: 0 10px 30px rgba(66, 140, 255, 0.32);
}
.btn.p:hover { transform: translateY(-2px); box-shadow: 0 16px 40px rgba(66, 140, 255, 0.45); }

.btn.g {
  border-color: var(--line-strong);
  color: var(--txt);
  background: rgba(255, 255, 255, 0.02);
}
.btn.g:hover { background: rgba(94, 152, 255, 0.12); transform: translateY(-2px); }

/* 数据条 */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  margin-top: 62px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--line);
}

.stats div {
  background: rgba(10, 18, 36, 0.78);
  padding: 22px 20px;
}

.stats b {
  display: block;
  font-size: 27px;
  font-weight: 800;
  letter-spacing: -0.5px;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.stats p { margin: 2px 0 0; font-size: 13px; color: var(--txt-mute); }

/* ---------- 区块 ---------- */
section.block { padding: 78px 0; }

.head { max-width: 720px; margin-bottom: 42px; }

.head .kicker {
  font-size: 12px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--cyan);
  opacity: 0.85;
}

.head h2 {
  margin: 12px 0 0;
  font-size: clamp(23px, 3.2vw, 33px);
  font-weight: 800;
  letter-spacing: -0.4px;
}

.head p { margin: 14px 0 0; color: var(--txt-dim); font-size: 15px; }

/* ---------- 卡片网格 ---------- */
.grid { display: grid; gap: 18px; }
.g2 { grid-template-columns: repeat(2, 1fr); }
.g3 { grid-template-columns: repeat(3, 1fr); }
.g4 { grid-template-columns: repeat(4, 1fr); }

.card {
  position: relative;
  padding: 26px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-card);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  overflow: hidden;
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease),
    box-shadow 0.35s var(--ease);
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-strong), transparent);
  opacity: 0;
  transition: opacity 0.35s var(--ease);
}

.card:hover {
  transform: translateY(-5px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow);
}
.card:hover::before { opacity: 1; }

.card .ico {
  width: 44px;
  height: 44px;
  border-radius: 11px;
  display: grid;
  place-items: center;
  background: rgba(77, 124, 255, 0.12);
  border: 1px solid var(--line);
  margin-bottom: 16px;
}
.card .ico svg { width: 21px; height: 21px; stroke: var(--cyan); fill: none; stroke-width: 1.6; }

.card h3 { margin: 0 0 8px; font-size: 16.5px; font-weight: 700; }
.card p { margin: 0; font-size: 13.6px; color: var(--txt-dim); line-height: 1.8; }

.card .no {
  position: absolute;
  right: 18px;
  top: 14px;
  font-size: 34px;
  font-weight: 800;
  color: rgba(120, 170, 255, 0.08);
  letter-spacing: -1px;
}

/* ---------- 经营范围标签 ---------- */
.scope { display: flex; flex-wrap: wrap; gap: 10px; }

.scope li {
  padding: 8px 16px;
  font-size: 13.4px;
  color: #c6d6f5;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(18, 30, 56, 0.5);
  transition: 0.25s var(--ease);
}
.scope li:hover {
  border-color: var(--line-strong);
  color: #fff;
  background: rgba(77, 124, 255, 0.14);
}

/* ---------- 两栏内容 ---------- */
.split {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 46px;
  align-items: center;
}

.prose p { color: var(--txt-dim); font-size: 14.6px; }
.prose p + p { margin-top: 14px; }

.checks { margin-top: 22px; display: grid; gap: 12px; }
.checks li {
  display: flex;
  gap: 11px;
  font-size: 14px;
  color: var(--txt-dim);
}
.checks li b { color: var(--txt); font-weight: 600; }
.checks .dot {
  flex: none;
  width: 18px;
  height: 18px;
  margin-top: 5px;
  border-radius: 50%;
  background: rgba(46, 230, 255, 0.12);
  border: 1px solid var(--line-strong);
  position: relative;
}
.checks .dot::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 7px;
  width: 6px;
  height: 3px;
  border-left: 1.6px solid var(--cyan);
  border-bottom: 1.6px solid var(--cyan);
  transform: rotate(-45deg);
}

/* 代码窗口 */
.win {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: rgba(6, 12, 26, 0.85);
  box-shadow: var(--shadow);
}
.win .bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 11px 14px;
  border-bottom: 1px solid var(--line);
  background: rgba(14, 24, 46, 0.9);
}
.win .bar i {
  width: 9px; height: 9px; border-radius: 50%;
  background: #2b3a5c;
}
.win .bar i:first-child { background: #ff5f57; }
.win .bar i:nth-child(2) { background: #febc2e; }
.win .bar i:nth-child(3) { background: #28c840; }
.win .bar span { margin-left: 8px; font-size: 12px; color: var(--txt-mute); }

.win pre {
  margin: 0;
  padding: 20px 18px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Courier New", monospace;
  font-size: 12.6px;
  line-height: 1.95;
  color: #a9c3ea;
  overflow-x: auto;
}
.win pre .k { color: #ff8fd1; }
.win pre .s { color: #7ee0a8; }
.win pre .c { color: #55688c; }
.win pre .n { color: #ffc978; }

/* ---------- 流程 ---------- */
.flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.flow .step {
  padding: 24px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-card);
  position: relative;
}
.flow .step b {
  display: inline-grid;
  place-items: center;
  width: 30px; height: 30px;
  border-radius: 8px;
  font-size: 13px;
  background: var(--grad);
  color: #041020;
  margin-bottom: 14px;
}
.flow .step h4 { margin: 0 0 6px; font-size: 15.5px; }
.flow .step p { margin: 0; font-size: 13.4px; color: var(--txt-dim); }

/* ---------- 联系 ---------- */
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.contact-grid .card p { color: var(--txt); font-size: 14.5px; }
.contact-grid .card small { color: var(--txt-mute); font-size: 12.5px; }

.notice {
  margin-top: 22px;
  padding: 16px 20px;
  border-left: 2px solid var(--cyan);
  border-radius: 0 10px 10px 0;
  background: rgba(46, 230, 255, 0.05);
  font-size: 13.4px;
  color: var(--txt-dim);
}

/* ---------- CTA ---------- */
.cta {
  margin: 20px 0 0;
  padding: 46px 40px;
  border: 1px solid var(--line-strong);
  border-radius: 18px;
  background:
    radial-gradient(600px 260px at 20% 0%, rgba(77, 124, 255, 0.2), transparent 70%),
    rgba(12, 22, 44, 0.7);
  text-align: center;
}
.cta h2 { margin: 0 0 12px; font-size: clamp(21px, 3vw, 30px); font-weight: 800; }
.cta p { margin: 0 auto 26px; max-width: 560px; color: var(--txt-dim); font-size: 14.6px; }
.cta .btns { justify-content: center; margin-top: 0; }

/* ---------- 页脚 ---------- */
footer {
  margin-top: 40px;
  border-top: 1px solid var(--line);
  background: rgba(5, 9, 20, 0.8);
  padding: 52px 0 24px;
}

.f-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 34px;
  padding-bottom: 34px;
  border-bottom: 1px solid var(--line);
}

.f-top h5 {
  margin: 0 0 14px;
  font-size: 13px;
  letter-spacing: 1.4px;
  color: var(--txt);
  text-transform: uppercase;
}
.f-top li { margin-bottom: 9px; font-size: 13.4px; color: var(--txt-mute); }
.f-top a:hover { color: var(--cyan); }
.f-top .desc { font-size: 13.4px; color: var(--txt-mute); max-width: 300px; margin: 14px 0 0; }

.f-bot {
  padding-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  justify-content: space-between;
  font-size: 12.8px;
  color: var(--txt-mute);
}
.f-bot a:hover { color: var(--cyan); }

/* ---------- 内页头部 ---------- */
.page-head {
  padding: 68px 0 44px;
  border-bottom: 1px solid var(--line);
}
.page-head .crumb { font-size: 12.8px; color: var(--txt-mute); }
.page-head .crumb a:hover { color: var(--cyan); }
.page-head h1 {
  margin: 16px 0 0;
  font-size: clamp(26px, 4.2vw, 42px);
  font-weight: 800;
  letter-spacing: -0.5px;
}
.page-head p { margin: 14px 0 0; max-width: 660px; color: var(--txt-dim); font-size: 15px; }

/* ---------- 表格 ---------- */
.tbl {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  font-size: 14px;
}
.tbl th, .tbl td {
  padding: 15px 20px;
  text-align: left;
  border-bottom: 1px solid var(--line);
}
.tbl th {
  width: 190px;
  color: var(--txt-mute);
  font-weight: 500;
  background: rgba(14, 24, 46, 0.6);
  vertical-align: top;
}
.tbl td { color: var(--txt); background: rgba(10, 18, 36, 0.4); }
.tbl tr:last-child th, .tbl tr:last-child td { border-bottom: 0; }

/* ---------- 入场动画 ---------- */
.rv {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.rv.in { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 980px) {
  .g4 { grid-template-columns: repeat(2, 1fr); }
  .g3 { grid-template-columns: repeat(2, 1fr); }
  .flow { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; gap: 30px; }
  .f-top { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .burger { display: block; }
  .menu {
    position: absolute;
    top: 66px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 12px 18px 20px;
    background: rgba(6, 11, 24, 0.98);
    border-bottom: 1px solid var(--line);
    display: none;
  }
  .menu.open { display: flex; }
  .menu a { padding: 12px 10px; font-size: 15px; }
  .menu a.on::after { left: 10px; right: auto; width: 18px; }

  .hero { padding: 58px 0 52px; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .g2, .g3, .g4, .flow { grid-template-columns: 1fr; }
  section.block { padding: 56px 0; }
  .cta { padding: 34px 22px; }
  .tbl th { width: 120px; }
  .tbl th, .tbl td { padding: 12px 14px; font-size: 13.4px; }
  .f-bot { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  .rv { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}