/* =========================================================
   福建视感电子有限公司 · 企业门户 公共样式（浅色主题）
   ========================================================= */
:root{
  --bg:#ffffff; --bg2:#f5f8fc; --bg3:#eef3f9;
  --card:#ffffff; --card2:#fbfdff;
  --line:rgba(15,42,72,.12); --line2:rgba(15,42,72,.08);
  --cyan:#0e93b3; --cyan2:#0aa5c4; --blue:#2563eb;
  --gold:#d97706; --txt:#16233a; --sub:#54677f; --dim:#8494a9;
  --shadow:0 8px 26px rgba(20,45,80,.07); --shadow-h:0 18px 44px rgba(20,45,80,.13);
  --r:14px; --max:1180px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"Microsoft YaHei","PingFang SC","Noto Sans SC","Segoe UI",sans-serif;
  background:var(--bg);color:var(--txt);line-height:1.75;font-size:15px;
  overflow-x:hidden;-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:rgba(14,147,179,.1);
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
ul{list-style:none}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}

/* ============ 导航 ============ */
nav{position:fixed;top:0;left:0;right:0;z-index:200;background:rgba(255,255,255,.92);backdrop-filter:blur(14px);border-bottom:1px solid var(--line);box-shadow:0 2px 14px rgba(20,45,80,.05)}
.nav-in{max-width:var(--max);margin:0 auto;padding:0 24px;height:66px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:center;gap:11px}
.brand img{width:40px;height:40px;border-radius:9px;background:#f2f6fb;padding:2px}
.brand b{font-size:18px;letter-spacing:1px;line-height:1.2;font-weight:800;
  background:linear-gradient(92deg,#0b8fae,#2563eb 62%);-webkit-background-clip:text;background-clip:text;color:transparent}
.brand small{display:block;font-size:10.5px;color:var(--sub);font-weight:400;letter-spacing:2.2px}
.nav-menu{display:flex;align-items:center;gap:28px;font-size:14.5px;color:var(--sub)}
.nav-menu a:hover,.nav-menu .drop-t:hover{color:var(--cyan)}
.nav-menu a.on{color:var(--cyan);font-weight:700;position:relative}
.nav-menu>a.on::after{content:"";position:absolute;left:0;right:0;bottom:-22px;height:3px;border-radius:3px;background:linear-gradient(92deg,#0e93b3,#2563eb 60%,#7c5cf0)}
/* 下拉 */
.drop{position:relative}
.drop-t{cursor:pointer;display:flex;align-items:center;gap:5px}
.drop-t::after{content:"";width:6px;height:6px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg) translateY(-2px);opacity:.7}
.drop-m{
  position:absolute;top:46px;left:50%;transform:translateX(-50%) translateY(8px);
  min-width:250px;background:rgba(255,255,255,.98);backdrop-filter:blur(14px);
  border:1px solid var(--line);border-radius:12px;padding:10px;
  box-shadow:0 24px 56px rgba(20,45,80,.16);opacity:0;visibility:hidden;transition:.22s;
}
.drop:hover .drop-m{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.drop-m a{display:block;padding:11px 14px;border-radius:9px;font-size:14px;color:var(--sub);transition:.2s}
.drop-m a:hover{background:rgba(14,147,179,.07);color:var(--cyan)}
.drop-m a i{font-style:normal;display:block;font-size:11.5px;color:var(--dim);margin-top:1px}
.drop-m .soon::after{content:"敬请期待";float:right;font-size:11px;color:var(--gold);border:1px solid rgba(217,119,6,.35);border-radius:20px;padding:0 8px}
.nav-tel{font-size:13px;color:#fff;background:linear-gradient(92deg,var(--cyan),var(--blue) 55%,#7c5cf0);padding:8px 18px;border-radius:22px;white-space:nowrap;transition:.25s;font-weight:600}
.nav-tel:hover{filter:brightness(1.08);box-shadow:0 8px 20px rgba(37,99,235,.26)}
.m-tel{display:none}
.nav-toggle{display:none;background:#fff;border:1px solid var(--line);color:var(--txt);border-radius:8px;padding:6px 12px;font-size:14px;cursor:pointer;-webkit-tap-highlight-color:transparent}
@media(max-width:1000px){
  .m-tel{display:block;color:var(--cyan);font-weight:700}
  .nav-menu{display:none;position:absolute;top:66px;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;
    background:rgba(255,255,255,.99);border-bottom:1px solid var(--line);padding:8px 20px 16px;
    box-shadow:0 14px 30px rgba(20,45,80,.1);
    max-height:calc(100vh - 66px);overflow-y:auto;-webkit-overflow-scrolling:touch}
  .nav-menu.open{display:flex}
  .nav-menu .drop-t::after{transform:rotate(45deg) translateY(-2px)}
  .drop-m{position:static;transform:none;opacity:1;visibility:visible;background:transparent;border:none;box-shadow:none;padding:0 0 0 10px;min-width:0}
  .nav-menu>*{padding:11px 0;border-bottom:1px solid var(--line2)}
  .nav-toggle{display:block}
  .nav-tel{display:none}
}

/* ============ 通用排版 ============ */
section{padding:86px 0}
.sec-head{text-align:center;margin-bottom:52px}
.sec-head .k{display:inline-block;font-size:12.5px;letter-spacing:4px;font-weight:700;
  color:#0a7299;background:rgba(14,147,179,.13);border-radius:20px;padding:5px 18px 5px 20px}
.sec-head h2{font-size:clamp(25px,3.4vw,38px);margin:10px 0 14px;font-weight:800;letter-spacing:.5px;color:var(--txt)}
.sec-head p{color:var(--sub);max-width:680px;margin:0 auto;font-size:15px}
.alt{background:linear-gradient(180deg,var(--bg2),var(--bg))}

/* ---- 分区彩底（提高饱和，白底仍清爽） ---- */
.tint-blue{background:linear-gradient(180deg,#e9f1ff,#dee9fd)}
.tint-aqua{background:linear-gradient(180deg,#e2f5f0,#d6efe8)}
.tint-violet{background:linear-gradient(180deg,#eeebfe,#e6e1fd)}
.tint-warm{background:linear-gradient(180deg,#fdefdc,#fbe4c4)}
.sec-head .k.k-blue{color:#1d4ed8;background:rgba(37,99,235,.14)}
.sec-head .k.k-aqua{color:#0b7a70;background:rgba(13,148,136,.14)}
.sec-head .k.k-violet{color:#5b34e0;background:rgba(124,92,240,.15)}
.sec-head .k.k-warm{color:#a85a05;background:rgba(217,119,6,.15)}

/* ---- 强调色变量（可被区块/卡片局部覆盖） ---- */
.accent-blue{--accent:#2563eb;--accent-soft:rgba(37,99,235,.1)}
.accent-aqua{--accent:#0d9488;--accent-soft:rgba(13,148,136,.1)}
.accent-violet{--accent:#7c5cf0;--accent-soft:rgba(124,92,240,.1)}
.accent-warm{--accent:#d97706;--accent-soft:rgba(217,119,6,.1)}
.accent-cyan{--accent:#0e93b3;--accent-soft:rgba(14,147,179,.1)}
[class*=accent-] .k{color:var(--accent)}
[class*=accent-] .pc-tag,[class*=accent-] .sec-head .k{color:var(--accent)}

/* ---- 彩色渐变文字 ---- */
.grad-text{background:linear-gradient(92deg,var(--cyan),var(--blue) 55%,#7c5cf0);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ============ 按钮 ============ */
.btns{display:flex;gap:16px;flex-wrap:wrap}
.btn{display:inline-block;padding:13px 32px;border-radius:10px;font-size:15.5px;font-weight:700;transition:.25s;cursor:pointer;border:none}
.btn-pri{background:linear-gradient(92deg,var(--cyan),var(--blue) 55%,#7c5cf0);color:#fff}
.btn-pri:hover{transform:translateY(-2px);box-shadow:0 14px 32px rgba(99,102,241,.3)}
.btn-ghost{border:1px solid var(--line);color:var(--txt);background:#fff}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan)}

/* ============ 通用卡片 ============ */
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.cards.c3{grid-template-columns:repeat(3,1fr)}
.cards.c2{grid-template-columns:repeat(2,1fr)}
@media(max-width:980px){.cards,.cards.c3,.cards.c2{grid-template-columns:repeat(2,1fr)}}
@media(max-width:620px){.cards,.cards.c3,.cards.c2{grid-template-columns:1fr}}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;transition:.3s;position:relative;box-shadow:var(--shadow)}
.card:hover{transform:translateY(-6px);border-color:rgba(14,147,179,.4);box-shadow:var(--shadow-h)}

/* ============ 页脚 ============ */
footer{position:relative;background:linear-gradient(180deg,#eef4fb,#e4edf8);padding:56px 0 28px;font-size:13.5px;color:var(--sub)}
footer::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(92deg,#0b8fae,#2563eb 52%,#6d4bd6)}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:34px;margin-bottom:34px}
@media(max-width:860px){.foot-grid{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.foot-grid{grid-template-columns:1fr}}
footer h4{color:var(--txt);font-size:15px;margin-bottom:14px;padding-left:11px;position:relative}
footer h4::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:3px;background:linear-gradient(180deg,#0e93b3,#2563eb)}
footer a:hover{color:var(--cyan)}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.foot-brand img{width:40px;height:40px;border-radius:9px;background:#f2f6fb;padding:2px}
.foot-brand b{color:var(--txt);font-size:16px}
.foot-line{display:flex;gap:9px;margin:7px 0;align-items:flex-start}
.foot-line em{font-style:normal;color:var(--cyan);flex:none;width:16px;text-align:center}
.copyright{border-top:1px solid var(--line2);padding-top:22px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:12.5px;color:var(--dim)}
.copyright a{color:var(--dim)}
.copyright a:hover{color:var(--cyan)}

/* ============ 出场动画 ============ */
.rv{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
.rv.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.rv{opacity:1;transform:none;transition:none}}

/* ============ 通用移动端优化 ============ */
/* 禁止 iOS 横屏自动放大字号；锚点跳转为固定导航留出空间 */
html{-webkit-text-size-adjust:100%;scroll-padding-top:76px}
body{overflow-wrap:break-word;word-break:break-word}
section,header,footer{scroll-margin-top:66px}
img{max-width:100%;height:auto}

@media(max-width:768px){
  section{padding:52px 0}
  .wrap,.nav-in{padding:0 18px}
  .sec-head{margin-bottom:32px}
  .sec-head .k{letter-spacing:3px}
  .sec-head p{font-size:14.5px}
  footer{padding:44px 0 24px}
  .foot-grid{gap:26px}
  .copyright{flex-direction:column;align-items:flex-start;gap:8px}
  .contact-chips span,.cta-chips span{padding:9px 16px;font-size:13px}
  .contact-chips,.cta-chips{gap:10px}
  /* 移动端菜单更易点按 */
  .nav-menu>*{padding:14px 0}
  .nav-menu a,.drop-t{font-size:15.5px}
  .drop-m a{padding:12px 14px}
  .nav-toggle{padding:8px 14px;min-height:36px}
  /* 弹窗适配小屏 */
  .modal{padding:16px}
  .modal-box{padding:34px 22px 26px;border-radius:16px}
  .modal-ic{font-size:38px}
  .modal-box h3{font-size:20px}
  .modal-box .sub{font-size:13.5px}
  /* 敬请期待整页 */
  .soon-page{padding:104px 20px 56px;min-height:auto}
  .soon-in .ico{font-size:46px}
  .soon-in p{font-size:15px;margin:16px 0 26px}
  .soon-list{gap:12px;margin:26px 0 24px}
  .soon-list div{padding:14px 16px}
}

@media(max-width:560px){
  body{font-size:14.5px;line-height:1.7}
  section{padding:46px 0}
  .wrap,.nav-in{padding:0 16px}
  .sec-head{margin-bottom:26px}
  .btn{padding:12px 22px;font-size:15px}
  .soon-page .btns .btn{width:100%}
  .soon-page .btns{gap:12px}
  .copyright{font-size:12px}
  .foot-brand img{width:36px;height:36px}
}

@media(max-width:400px){
  .brand img{width:36px;height:36px}
  .brand b{font-size:16.5px}
  .brand small{font-size:9.5px;letter-spacing:1.6px}
  .nav-in{gap:10px}
}

/* ============ “敬请期待”弹窗 ============ */
.modal{position:fixed;inset:0;z-index:500;display:none;align-items:center;justify-content:center;padding:20px}
.modal.show{display:flex}
.modal-mask{position:absolute;inset:0;background:rgba(20,40,70,.42);backdrop-filter:blur(6px);animation:fade .25s ease}
.modal-box{
  position:relative;z-index:2;max-width:460px;width:100%;text-align:center;
  background:#fff;border:1px solid var(--line);
  border-radius:18px;padding:44px 34px 34px;box-shadow:0 30px 80px rgba(20,45,80,.22);animation:pop .28s ease;
}
@keyframes fade{from{opacity:0}to{opacity:1}}
@keyframes pop{from{opacity:0;transform:translateY(16px) scale(.96)}to{opacity:1;transform:none}}
.modal-x{position:absolute;top:12px;right:14px;background:none;border:none;color:var(--dim);font-size:26px;line-height:1;cursor:pointer}
.modal-x:hover{color:var(--cyan)}
.modal-ic{font-size:44px;margin-bottom:12px}
.modal-box h3{font-size:23px;font-weight:800;margin-bottom:10px;color:var(--txt)}
.modal-box .sub{color:var(--sub);font-size:14px;margin-bottom:22px}
.modal-box .tip{font-size:12.5px;color:var(--dim);margin-top:18px}
.modal-box .btns{justify-content:center}

/* ============ 敬请期待整页 ============ */
.soon-page{min-height:100vh;display:flex;align-items:center;justify-content:center;text-align:center;padding:140px 24px 80px;position:relative;overflow:hidden;background:
  radial-gradient(680px 420px at 12% 8%,rgba(14,147,179,.26),transparent 62%),
  radial-gradient(620px 400px at 88% 22%,rgba(124,92,240,.28),transparent 62%),
  radial-gradient(520px 340px at 60% 96%,rgba(37,99,235,.2),transparent 64%),
  linear-gradient(180deg,#f4f9ff,#e6eefb)}
.soon-page::before{content:"";position:absolute;top:-160px;left:50%;transform:translateX(-50%);width:720px;height:720px;border-radius:50%;background:
  radial-gradient(circle,rgba(14,147,179,.24),transparent 62%),
  radial-gradient(circle at 70% 30%,rgba(217,119,6,.18),transparent 60%)}
.soon-in{position:relative;max-width:640px}
.soon-in .ico{font-size:60px;margin-bottom:16px}
.soon-in h1{font-size:clamp(28px,4.4vw,46px);font-weight:800;line-height:1.28;color:var(--txt)}
.soon-in h1 span{background:linear-gradient(92deg,var(--cyan),var(--blue) 70%);-webkit-background-clip:text;background-clip:text;color:transparent}
.soon-in p{color:var(--sub);margin:20px 0 32px;font-size:16px}
.soon-list{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:34px 0 30px;text-align:left}
@media(max-width:640px){.soon-list{grid-template-columns:1fr}}
.soon-list div{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 18px;font-size:13.5px;color:var(--sub);box-shadow:var(--shadow)}
.soon-list b{display:block;color:var(--txt);font-size:15px;margin-bottom:4px}
.contact-chips{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:26px;font-size:13.5px;color:var(--sub)}
.contact-chips span{border:1px solid var(--line);border-radius:22px;padding:9px 20px;background:#fff}
.contact-chips em{font-style:normal;color:var(--cyan);font-weight:700}