/* ===== 灵犀智能官网 · 全局样式（浅色主题） ===== */

:root {
  --bg: #FFFFFF;
  --bg2: #F5F7FB;
  --card: #FFFFFF;
  --card2: #F1F4FA;
  --line: #E4E8F2;
  --text: #16203A;
  --text2: #5A6785;
  --text3: #93A0B8;
  --orange: #FF6B2B;
  --orange-d: #E85A1C;
  --blue: #3B82F6;
  --green: #10B981;
  --r: 14px;
  --r-lg: 20px;
  --sh: 0 2px 12px rgba(22, 32, 58, .05);
  --sh-md: 0 8px 28px rgba(22, 32, 58, .08);
  --sh-lg: 0 20px 48px rgba(22, 32, 58, .13);
}

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

body {
  font-family: -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
}

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

/* ===== 顶部导航 ===== */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: 68px; display: flex; align-items: center; padding: 0 40px;
  background: rgba(255, 255, 255, .78);
  backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid transparent;
  transition: background .3s, border-color .3s, box-shadow .3s;
}
.nav.solid { background: rgba(255, 255, 255, .96); border-bottom-color: var(--line); box-shadow: 0 2px 16px rgba(22, 32, 58, .06); }

.nav-logo { display: flex; align-items: center; gap: 11px; font-size: 19px; font-weight: 700; letter-spacing: .5px; }
.nav-logo .mark {
  width: 34px; height: 34px; border-radius: 9px;
  background: linear-gradient(135deg, var(--orange), #FF9A5C);
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; font-weight: 800; color: #fff;
  box-shadow: 0 4px 14px rgba(255, 107, 43, .32);
}

.nav-menu { display: flex; gap: 2px; margin-left: 34px; }
.nav-menu a { padding: 8px 15px; border-radius: 9px; font-size: 14px; color: var(--text2); transition: all .22s; white-space: nowrap; }
.nav-menu a:hover { color: var(--text); background: var(--card2); }
.nav-menu a.active { color: var(--orange); background: rgba(255, 107, 43, .09); font-weight: 600; }

.nav-right { margin-left: auto; display: flex; align-items: center; gap: 14px; }
.btn-dl {
  padding: 9px 22px; border-radius: 9px;
  background: linear-gradient(135deg, var(--orange), #FF8A4C);
  color: #fff; font-size: 14px; font-weight: 600;
  box-shadow: 0 4px 16px rgba(255, 107, 43, .28);
  transition: transform .2s, box-shadow .2s; white-space: nowrap;
}
.btn-dl:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(255, 107, 43, .42); }

.nav-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 6px; }
.nav-toggle span { width: 22px; height: 2px; background: var(--text); border-radius: 2px; }

/* ===== 容器 ===== */
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 32px; }

/* ===== 首屏 ===== */
.hero {
  min-height: 100vh; display: flex; align-items: center; position: relative; overflow: hidden;
  padding: 120px 0 80px;
  background: linear-gradient(180deg, #F7F9FF 0%, #FFFFFF 62%);
}
.hero::before {
  content: ''; position: absolute; inset: 0;
  background:
    radial-gradient(700px 500px at 15% 18%, rgba(255, 107, 43, .10), transparent 70%),
    radial-gradient(620px 520px at 86% 72%, rgba(59, 130, 246, .10), transparent 70%);
  pointer-events: none;
}
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 60px; align-items: center; position: relative; }
.tag {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 16px; border-radius: 100px;
  background: rgba(255, 107, 43, .08); border: 1px solid rgba(255, 107, 43, .22);
  color: var(--orange-d); font-size: 13px; font-weight: 600; margin-bottom: 24px;
}
.tag .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--orange); animation: pulse 2s infinite; }
@keyframes pulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:.4;transform:scale(.85)} }

.hero h1 { font-size: 54px; line-height: 1.18; font-weight: 800; letter-spacing: -1px; margin-bottom: 22px; }
.hero h1 .hl {
  background: linear-gradient(135deg, var(--orange) 10%, #FF9A5C 90%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.hero p.lead { font-size: 17px; color: var(--text2); margin-bottom: 36px; max-width: 520px; }

.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  padding: 14px 34px; border-radius: 11px; font-size: 15px; font-weight: 600;
  cursor: pointer; border: none; transition: all .25s;
  display: inline-flex; align-items: center; gap: 8px;
}
.btn-primary { background: linear-gradient(135deg, var(--orange), #FF8A4C); color: #fff; box-shadow: 0 6px 20px rgba(255, 107, 43, .3); }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 30px rgba(255, 107, 43, .42); }
.btn-ghost { background: #fff; color: var(--text); border: 1px solid var(--line); box-shadow: var(--sh); }
.btn-ghost:hover { border-color: var(--orange); color: var(--orange); box-shadow: 0 8px 22px rgba(255, 107, 43, .16); }

.hero-visual { position: relative; display: flex; justify-content: center; }
.hero-visual img {
  width: 100%; max-width: 460px;
  filter: drop-shadow(0 22px 46px rgba(22, 32, 58, .18));
  animation: float 6s ease-in-out infinite;
}
@keyframes float { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-14px)} }

.stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px;
  background: var(--line); border: 1px solid var(--line);
  border-radius: var(--r); overflow: hidden; margin-top: 70px; position: relative;
  box-shadow: var(--sh-md);
}
.stat { background: #fff; padding: 30px 20px; text-align: center; transition: background .3s; }
.stat:hover { background: var(--card2); }
.stat .v {
  font-size: 36px; font-weight: 800; line-height: 1.1;
  background: linear-gradient(135deg, var(--orange), #FFA163);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.stat .k { font-size: 13px; color: var(--text3); margin-top: 6px; }

/* ===== 区块 ===== */
.section { padding: 100px 0; position: relative; }
.section.alt { background: var(--bg2); }
.sec-head { text-align: center; margin-bottom: 58px; }
.sec-tag { font-size: 12px; letter-spacing: 4px; color: var(--orange); font-weight: 700; text-transform: uppercase; margin-bottom: 12px; }
.sec-head h2 { font-size: 38px; font-weight: 800; letter-spacing: -.5px; margin-bottom: 14px; }
.sec-head p { color: var(--text2); font-size: 16px; max-width: 640px; margin: 0 auto; }

/* ===== 产品卡片 ===== */
.prod-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.prod {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--r-lg); overflow: hidden;
  box-shadow: var(--sh);
  transition: transform .3s, border-color .3s, box-shadow .3s;
  display: flex; flex-direction: column;
}
.prod:hover { transform: translateY(-8px); border-color: rgba(255, 107, 43, .42); box-shadow: var(--sh-lg); }
.prod .pic {
  height: 230px; background: linear-gradient(160deg, #F7F9FD, #EBF0F9);
  display: flex; align-items: center; justify-content: center; padding: 26px; overflow: hidden;
}
.prod .pic img { max-height: 100%; width: auto; object-fit: contain; transition: transform .5s; filter: drop-shadow(0 10px 22px rgba(22, 32, 58, .16)); }
.prod:hover .pic img { transform: scale(1.08); }
.prod .body { padding: 26px 24px 30px; flex: 1; display: flex; flex-direction: column; }
.prod .cat { font-size: 11px; letter-spacing: 2px; color: var(--text3); text-transform: uppercase; margin-bottom: 8px; }
.prod h3 { font-size: 21px; font-weight: 700; margin-bottom: 12px; }
.prod p { font-size: 14px; color: var(--text2); flex: 1; }
.prod .specs { margin-top: 18px; display: flex; flex-wrap: wrap; gap: 8px; }
.prod .specs span { font-size: 12px; padding: 5px 12px; border-radius: 7px; background: var(--card2); color: var(--text2); border: 1px solid var(--line); }

/* ===== 特性 ===== */
.feat-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.feat { display: flex; gap: 18px; padding: 26px; background: var(--card); border: 1px solid var(--line); border-radius: var(--r); box-shadow: var(--sh); transition: all .3s; }
.feat:hover { border-color: rgba(255, 107, 43, .38); transform: translateX(6px); box-shadow: var(--sh-md); }
.feat .ico {
  width: 48px; height: 48px; flex-shrink: 0; border-radius: 12px;
  background: rgba(255, 107, 43, .1); color: var(--orange);
  display: flex; align-items: center; justify-content: center; font-size: 22px;
}
.feat h4 { font-size: 16px; font-weight: 700; margin-bottom: 6px; }
.feat p { font-size: 13px; color: var(--text2); line-height: 1.65; }

/* ===== 场景 / 案例 ===== */
.scene-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.scene { border-radius: var(--r-lg); overflow: hidden; border: 1px solid var(--line); background: var(--card); box-shadow: var(--sh); transition: transform .3s, box-shadow .3s; }
.scene:hover { transform: translateY(-6px); box-shadow: var(--sh-lg); }
.scene .pic { height: 220px; overflow: hidden; background: #EEF2F8; }
.scene .pic img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s; }
.scene:hover .pic img { transform: scale(1.08); }
.scene .body { padding: 24px; }
.scene .co { display: inline-block; font-size: 12px; font-weight: 700; color: var(--orange-d); background: rgba(255, 107, 43, .1); padding: 4px 12px; border-radius: 6px; margin-bottom: 12px; }
.scene h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.scene p { font-size: 13px; color: var(--text2); }

/* ===== 流程 ===== */
.flow { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.flow .step { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 30px 26px; box-shadow: var(--sh); transition: all .3s; }
.flow .step:hover { border-color: rgba(59, 130, 246, .4); transform: translateY(-5px); box-shadow: var(--sh-md); }
.flow .num {
  width: 40px; height: 40px; border-radius: 11px;
  background: linear-gradient(135deg, var(--blue), #60A5FA);
  color: #fff; font-weight: 800; font-size: 17px;
  display: flex; align-items: center; justify-content: center; margin-bottom: 18px;
}
.flow h4 { font-size: 17px; font-weight: 700; margin-bottom: 10px; }
.flow p { font-size: 13px; color: var(--text2); }

/* ===== 关于我们 ===== */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.about-grid h2 { font-size: 36px; font-weight: 800; margin-bottom: 20px; letter-spacing: -.5px; }
.about-grid p { color: var(--text2); font-size: 15px; margin-bottom: 16px; }

.contact { margin-top: 26px; padding: 26px; background: var(--card); border: 1px solid var(--line); border-radius: var(--r); box-shadow: var(--sh); }
.contact .row { display: flex; align-items: center; gap: 14px; padding: 11px 0; font-size: 15px; }
.contact .row .ico { color: var(--orange); font-size: 17px; width: 22px; }
.contact .row b { color: var(--text); font-weight: 600; }

/* ===== 页脚 ===== */
.footer { background: var(--bg2); border-top: 1px solid var(--line); padding: 52px 0 30px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; margin-bottom: 36px; }
.footer h5 { font-size: 14px; font-weight: 700; margin-bottom: 16px; }
.footer a, .footer p { font-size: 13px; color: var(--text3); display: block; margin-bottom: 9px; transition: color .2s; }
.footer a:hover { color: var(--orange); }
.footer-bottom { border-top: 1px solid var(--line); padding-top: 24px; text-align: center; font-size: 12px; color: var(--text3); }

/* ===== 滚动动画 ===== */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.reveal.on { opacity: 1; transform: translateY(0); }

/* ===== 内页头部 ===== */
.page-head {
  padding: 150px 0 70px; text-align: center; position: relative; overflow: hidden;
  background: linear-gradient(180deg, #F7F9FF 0%, #FFFFFF 100%);
}
.page-head::before { content: ''; position: absolute; inset: 0; background: radial-gradient(600px 340px at 50% 0%, rgba(255, 107, 43, .12), transparent 70%); }
.page-head h1 { font-size: 46px; font-weight: 800; letter-spacing: -1px; margin-bottom: 14px; position: relative; }
.page-head p { color: var(--text2); font-size: 16px; position: relative; }

/* ===== 大图展示 ===== */
.showcase { border-radius: var(--r-lg); overflow: hidden; border: 1px solid var(--line); background: var(--card); box-shadow: var(--sh-lg); }
.showcase img { width: 100%; }

/* ===== 产品详情 ===== */
.pd { display: grid; grid-template-columns: 1.1fr 1fr; gap: 56px; align-items: center; margin-bottom: 90px; }
.pd:last-child { margin-bottom: 0; }
.pd.flip .pd-pic { order: 2; }
.pd-pic {
  border-radius: var(--r-lg); border: 1px solid var(--line);
  background: linear-gradient(160deg, #F7F9FD, #E9EFF9);
  padding: 46px; display: flex; align-items: center; justify-content: center;
  min-height: 380px; position: relative; overflow: hidden;
}
.pd-pic::after {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(400px 300px at 50% 45%, rgba(255, 107, 43, .08), transparent 70%);
  pointer-events: none;
}
.pd-pic img { max-height: 330px; width: auto; filter: drop-shadow(0 18px 34px rgba(22, 32, 58, .18)); position: relative; z-index: 1; }
.pd-badge {
  display: inline-block; font-size: 11px; letter-spacing: 2px; font-weight: 700;
  color: var(--orange-d); background: rgba(255, 107, 43, .09);
  border: 1px solid rgba(255, 107, 43, .22); padding: 5px 14px; border-radius: 100px; margin-bottom: 16px;
}
.pd-info h2 { font-size: 34px; font-weight: 800; letter-spacing: -.5px; margin-bottom: 6px; }
.pd-info .sub { font-size: 14px; color: var(--text3); margin-bottom: 18px; }
.pd-info > p { font-size: 15px; color: var(--text2); margin-bottom: 22px; }

.spec { border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; background: var(--card); box-shadow: var(--sh); }
.spec .row { display: flex; padding: 11px 20px; font-size: 13.5px; border-bottom: 1px solid var(--line); }
.spec .row:last-child { border-bottom: none; }
.spec .row:nth-child(odd) { background: var(--card2); }
.spec .row .k { width: 130px; flex-shrink: 0; color: var(--text3); }
.spec .row .v { color: var(--text); font-weight: 500; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 22px; }
.chips span, .chips a { font-size: 12px; padding: 5px 13px; border-radius: 7px; background: var(--card2); color: var(--text2); border: 1px solid var(--line); transition: all .25s; }
.chips a { font-size: 13.5px; padding: 9px 20px; border-radius: 9px; background: #fff; box-shadow: var(--sh); }
.chips a:hover { border-color: var(--orange); color: var(--orange); background: rgba(255, 107, 43, .05); box-shadow: 0 8px 20px rgba(255, 107, 43, .14); }
.anchor-bar { display: flex; justify-content: center; flex-wrap: wrap; gap: 10px; margin-bottom: 70px; }

/* ===== 配件 ===== */
.acc-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.acc { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 24px 18px; text-align: center; box-shadow: var(--sh); transition: all .3s; }
.acc:hover { border-color: rgba(255, 107, 43, .38); transform: translateY(-5px); box-shadow: var(--sh-md); }
.acc .pic { height: 120px; display: flex; align-items: center; justify-content: center; margin-bottom: 14px; }
.acc .pic img { max-height: 100%; width: auto; filter: drop-shadow(0 8px 16px rgba(22, 32, 58, .14)); }
.acc h4 { font-size: 14px; font-weight: 600; margin-bottom: 6px; }
.acc p { font-size: 12px; color: var(--text3); }

/* ===== 对比表 ===== */
.tbl { width: 100%; border-collapse: collapse; border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; font-size: 13.5px; background: #fff; box-shadow: var(--sh); }
.tbl th, .tbl td { padding: 14px 18px; text-align: left; border-bottom: 1px solid var(--line); }
.tbl th { background: var(--card2); font-weight: 700; font-size: 13px; color: var(--text); }
.tbl td { color: var(--text2); }
.tbl tr:last-child td { border-bottom: none; }
.tbl tbody tr:hover td { background: #FAFBFE; }
.tbl td:first-child { color: var(--text); font-weight: 500; }

/* ===== 时间轴 ===== */
.tl { position: relative; padding-left: 34px; }
.tl::before { content: ''; position: absolute; left: 9px; top: 8px; bottom: 8px; width: 2px; background: var(--line); }
.tl .item { position: relative; padding-bottom: 34px; }
.tl .item:last-child { padding-bottom: 0; }
.tl .item::before { content: ''; position: absolute; left: -30px; top: 7px; width: 12px; height: 12px; border-radius: 50%; background: var(--orange); box-shadow: 0 0 0 4px rgba(255, 107, 43, .14); }
.tl .yr { font-size: 12px; font-weight: 700; color: var(--orange); letter-spacing: 1px; margin-bottom: 5px; }
.tl h4 { font-size: 16px; font-weight: 700; margin-bottom: 6px; }
.tl p { font-size: 13.5px; color: var(--text2); }

/* ===== 软件下载 ===== */
.dl-box {
  max-width: 700px; margin: 0 auto; background: var(--card);
  border: 1px solid var(--line); border-radius: var(--r-lg);
  box-shadow: var(--sh-lg); padding: 46px 42px; text-align: center;
}
.dl-box .os { font-size: 50px; margin-bottom: 16px; }
.dl-box h3 { font-size: 25px; font-weight: 800; margin-bottom: 8px; }
.dl-box .ver { font-size: 13px; color: var(--text3); margin-bottom: 26px; }
.dl-meta {
  display: flex; justify-content: center; gap: 40px; flex-wrap: wrap;
  padding: 20px 0; margin-bottom: 28px;
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
}
.dl-meta div { font-size: 12px; color: var(--text3); }
.dl-meta b { display: block; color: var(--text); font-size: 14.5px; font-weight: 600; margin-top: 5px; }
.dl-tip { font-size: 12.5px; color: var(--text3); margin-top: 18px; line-height: 1.7; }

.step-list { counter-reset: s; }
.step-list .row { display: flex; gap: 16px; padding: 18px 0; border-bottom: 1px dashed var(--line); }
.step-list .row:last-child { border-bottom: none; }
.step-list .n {
  width: 28px; height: 28px; flex-shrink: 0; border-radius: 50%;
  background: rgba(255, 107, 43, .1); color: var(--orange-d);
  font-size: 13px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.step-list h4 { font-size: 15px; font-weight: 700; margin-bottom: 4px; }
.step-list p { font-size: 13px; color: var(--text2); }

/* ===== 手机适配 ===== */
@media (max-width: 980px) {
  .nav { padding: 0 20px; }
  .nav-menu { display: none; }
  .nav-toggle { display: flex; }
  .nav-menu.open {
    display: flex; flex-direction: column; position: absolute; top: 68px; left: 0; right: 0;
    background: #fff; padding: 16px; border-bottom: 1px solid var(--line);
    box-shadow: 0 12px 30px rgba(22, 32, 58, .1);
  }
  .nav-menu.open a { padding: 13px 18px; }
  .hero-grid, .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero h1 { font-size: 36px; }
  .hero-visual { order: -1; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .prod-grid, .feat-grid, .scene-grid, .flow { grid-template-columns: 1fr; }
  .flow[style] { grid-template-columns: 1fr !important; }
  .pd { grid-template-columns: 1fr; gap: 28px; margin-bottom: 60px; }
  .pd.flip .pd-pic { order: 0; }
  .pd-pic { padding: 28px; min-height: 240px; }
  .pd-pic img { max-height: 210px; }
  .pd-info h2 { font-size: 25px; }
  .acc-grid { grid-template-columns: repeat(2, 1fr); }
  .tbl { display: block; overflow-x: auto; white-space: nowrap; }
  .spec .row .k { width: 96px; }
  .section { padding: 64px 0; }
  .sec-head h2 { font-size: 28px; }
  .page-head { padding: 120px 0 50px; }
  .page-head h1 { font-size: 32px; }
  .wrap { padding: 0 20px; }
  .footer-grid { grid-template-columns: 1fr; gap: 26px; }
  .dl-box { padding: 32px 22px; }
  .dl-meta { gap: 24px; }
  .contact { margin-top: 0; }
}