/* ==========================================================
   上海奇初科技有限公司 · 官网公共样式
   用于所有二级页面（首页 index.html 仍保留内联样式）
   版本：2026-10-21
   ========================================================== */

:root{
  --ink:#0F2233; --ink2:#405667; --ink3:#708596;
  --line:#E4EAF1; --line2:#EFF3F8;
  --bg:#FFFFFF; --bg2:#F7F9FC; --bg3:#EDF2F8;
  --brand:#12395E; --brand2:#1B5A8C;
  --acc:#0E9384; --acc-2:#0B7A6E; --acc-bg:#E9F6F3;
  --warn:#B54708; --warn-bg:#FDF4E8;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%; scroll-behavior:smooth;}
body{
  margin:0; background:var(--bg); color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Segoe UI",sans-serif;
  font-size:16px; line-height:1.75; -webkit-font-smoothing:antialiased;
}
img{max-width:100%; display:block;}
a{color:inherit; text-decoration:none;}
svg{display:block;}
.wrap{max-width:1200px; margin:0 auto; padding:0 32px;}
.sr{position:absolute; width:1px; height:1px; overflow:hidden; clip:rect(0 0 0 0);}
:focus-visible{outline:2px solid var(--acc); outline-offset:2px;}
.skip{position:absolute; left:-9999px; top:0; background:var(--brand); color:#fff; padding:10px 16px; z-index:200; border-radius:0 0 8px 0;}
.skip:focus{left:0;}

/* ---------- 顶部信息栏（第一行） ---------- */
.topbar{background:var(--bg2); border-bottom:1px solid var(--line); font-size:13px; color:var(--ink2);}
.topbar .wrap{display:flex; align-items:center; gap:16px; height:56px;}
.brand{display:flex; align-items:center; gap:11px;}
.brand .mark{
  width:34px; height:34px; border-radius:9px; background:linear-gradient(150deg,#17456F,#0E9384);
  color:#fff; font-weight:700; font-size:17px; display:flex; align-items:center; justify-content:center;
  letter-spacing:-.5px; flex:0 0 34px;
}
.brand .nm{font-weight:700; color:var(--brand); font-size:15.5px; letter-spacing:-.2px;}
.brand .tag{color:var(--ink3); font-size:12.5px; padding-left:12px; border-left:1px solid var(--line); margin-left:2px;}
.topbar .tel{margin-left:auto; display:flex; align-items:center; gap:7px; font-weight:700; color:var(--brand); font-size:14.5px; white-space:nowrap;}
.topbar .tel svg{width:15px; height:15px; stroke:var(--acc); fill:none; stroke-width:2;}

/* ---------- 主导航（第二行，独立通栏） ---------- */
.nav{background:#fff; border-bottom:1px solid var(--line); position:sticky; top:0; z-index:60;}
.nav .wrap{display:flex; align-items:center; height:60px; gap:4px; position:relative;}
.menu{display:flex; align-items:center; gap:2px; flex:1; margin:0; padding:0;}
.menu > li{list-style:none; position:relative;}
.menu > li > a{
  display:block; padding:8px 15px; font-size:15px; font-weight:600; color:#26394A; border-radius:7px;
  transition:color .18s, background .18s; white-space:nowrap;
}
.menu > li > a:hover{color:var(--brand); background:var(--bg2);}
.menu > li > a.on{color:var(--brand);}
.menu > li > a.on::after{content:""; display:block; height:2px; background:var(--brand); border-radius:2px; margin-top:3px;}
.caret{display:inline-block; width:7px; height:7px; border-right:1.6px solid #98A9B9; border-bottom:1.6px solid #98A9B9; transform:rotate(45deg) translateY(-2px); margin-left:7px; transition:transform .2s;}
.drop{
  position:absolute; top:calc(100% + 8px); left:0; min-width:430px;
  background:#fff; border:1px solid var(--line); border-radius:12px;
  box-shadow:0 16px 40px rgba(15,34,51,.11); padding:16px 18px;
  display:flex; gap:26px; opacity:0; visibility:hidden; transform:translateY(-6px);
  transition:opacity .18s, transform .18s, visibility .18s;
}
.menu > li:hover .drop, .menu > li:focus-within .drop{opacity:1; visibility:visible; transform:translateY(0);}
.menu > li:hover .caret{transform:rotate(225deg) translateY(-4px);}
.dcol .h{font-size:11.5px; letter-spacing:.06em; color:var(--ink3); font-weight:700; margin-bottom:8px; text-transform:uppercase;}
.dcol a{display:block; font-size:13.5px; color:#26394A; padding:5px 8px; border-radius:6px; margin:0 -8px; font-weight:500;}
.dcol a:hover{background:var(--bg2); color:var(--acc-2);}
.dcol a.sub{padding-left:18px; font-weight:400; color:var(--ink2); font-size:13px;}
.dcol .sep{height:1px; background:var(--line2); margin:10px 0;}
.dcol .hint{font-size:11.5px; color:#9DAFBE; padding-top:6px; line-height:1.5;}
.dcol.legacy{border-left:1px solid var(--line2); padding-left:24px;}
.drop.narrow{min-width:222px; display:block; padding:12px 14px;}
.drop.narrow > a{display:block; font-size:13.5px; color:#26394A; padding:7px 10px; border-radius:6px; font-weight:500;}
.drop.narrow > a:hover{background:var(--bg2); color:var(--acc-2);}
.drop.right{left:auto; right:0;}
.burger{display:none; margin-left:auto; width:44px; height:44px; border:1px solid var(--line); background:#fff; border-radius:9px; align-items:center; justify-content:center; cursor:pointer;}
.burger span{display:block; width:18px; height:2px; background:#26394A; position:relative;}
.burger span::before,.burger span::after{content:""; position:absolute; left:0; width:18px; height:2px; background:#26394A;}
.burger span::before{top:-6px;} .burger span::after{top:6px;}

/* ---------- 面包屑 ---------- */
.crumb{background:var(--bg2); border-bottom:1px solid var(--line2); font-size:12.5px; color:var(--ink3);}
.crumb .wrap{display:flex; align-items:center; gap:8px; height:44px; flex-wrap:wrap;}
.crumb a:hover{color:var(--brand);}
.crumb .sl{color:#B4C2CF;}

/* ---------- 通用按钮 ---------- */
.btn{
  display:inline-flex; align-items:center; gap:8px; padding:13px 24px; border-radius:8px;
  font-size:15px; font-weight:600; border:1px solid transparent; cursor:pointer; transition:.18s; min-height:46px;
}
.btn-p{background:var(--brand); color:#fff;}
.btn-p:hover{background:#0E2B47;}
.btn-s{background:#fff; color:var(--brand); border-color:#CBD8E4;}
.btn-s:hover{border-color:var(--brand); background:#FAFCFE;}
.btn svg{width:16px; height:16px; stroke:currentColor; fill:none; stroke-width:2;}
.cta-row{display:flex; flex-wrap:wrap; gap:12px; align-items:center;}

/* ---------- 首屏 ---------- */
.hero{padding:56px 0 48px; background:linear-gradient(180deg,#FFFFFF 0%,#F7FAFD 100%); border-bottom:1px solid var(--line2);}
.hero .eyebrow{font-size:12px; letter-spacing:.14em; text-transform:uppercase; color:var(--acc-2); font-weight:700; margin:0 0 14px;}
h1{font-size:38px; line-height:1.3; margin:0 0 20px; letter-spacing:-.8px; font-weight:700; color:var(--brand);}
.hero .def{font-size:16.5px; color:var(--ink2); max-width:830px; margin:0 0 26px; line-height:1.88;}
.hero .def strong{color:var(--ink); font-weight:600;}
.hero .note{font-size:12.5px; color:var(--ink3); margin-top:14px;}

/* ---------- 区块 ---------- */
section{padding:54px 0;}
.sec-head{margin-bottom:26px; max-width:830px;}
.kicker{font-size:12px; letter-spacing:.12em; text-transform:uppercase; color:var(--acc-2); font-weight:700; margin:0 0 10px;}
h2{font-size:28px; line-height:1.38; margin:0 0 12px; letter-spacing:-.4px; color:var(--brand); font-weight:700;}
.sec-head p{margin:0; color:var(--ink2); font-size:15.2px; line-height:1.85;}
.sec-head p + p{margin-top:10px;}
h3{font-size:18px; color:var(--brand); margin:0 0 8px; font-weight:700; letter-spacing:-.2px;}
.alt{background:var(--bg2); border-top:1px solid var(--line); border-bottom:1px solid var(--line);}
.link{display:inline-flex; align-items:center; gap:7px; font-size:14.5px; font-weight:700; color:var(--brand);}
.link svg{width:15px; height:15px; stroke:currentColor; fill:none; stroke-width:2; transition:transform .18s;}
.link:hover{color:var(--acc-2);}
.link:hover svg{transform:translateX(3px);}

/* ---------- FAQ（常显，便于抓取与 AI 引用） ---------- */
.qa-list{border-top:1px solid var(--line); max-width:980px;}
.qa{padding:23px 0; border-bottom:1px solid var(--line);}
.qa-q{display:flex; gap:13px; font-size:16.5px; color:var(--brand); margin:0 0 11px; line-height:1.6; align-items:flex-start; font-weight:700;}
.qa-q .qno{flex:0 0 auto; margin-top:2px; font-family:ui-monospace,Menlo,monospace; font-size:11.5px; font-weight:700; color:var(--acc-2); background:var(--acc-bg); border-radius:5px; padding:2px 7px;}
.qa-a{font-size:14.6px; color:var(--ink2); line-height:1.9;}
.qa-a p{margin:0 0 9px;}
.qa-a p:last-child{margin-bottom:0;}
.qa-a b{color:var(--ink); font-weight:600;}

/* ---------- 转化区 ---------- */
.conv{background:linear-gradient(165deg,#0E2B47 0%,#12395E 60%,#17456F 100%); color:#fff;}
.conv .inner{display:grid; grid-template-columns:1fr 420px; gap:56px; align-items:start; padding:58px 0;}
.conv h2{color:#fff; font-size:28px; margin:0 0 14px;}
.conv .sub{color:#B9CEE0; font-size:15px; margin:0 0 26px; max-width:520px; line-height:1.85;}
.citem{display:flex; gap:13px; padding:13px 0; border-top:1px solid rgba(255,255,255,.12); font-size:14px; color:#D5E3EE;}
.citem:first-of-type{border-top:0;}
.citem .ic{flex:0 0 30px; width:30px; height:30px; border-radius:8px; background:rgba(255,255,255,.09); display:flex; align-items:center; justify-content:center;}
.citem .ic svg{width:15px; height:15px; stroke:#7FE0D0; fill:none; stroke-width:2;}
.citem b{color:#fff; display:block; font-size:14.5px; margin-bottom:2px;}
.citem a{color:#7FE0D0;}
.form{background:#fff; border-radius:14px; padding:28px; color:var(--ink);}
.form h3{font-size:17px; margin:0 0 4px;}
.form .fh{font-size:12.5px; color:var(--ink3); margin:0 0 20px;}
.field{margin-bottom:14px;}
.field label{display:block; font-size:12.5px; font-weight:600; color:var(--ink2); margin-bottom:6px;}
.field label .req{color:#C0362C;}
.field input,.field select,.field textarea{width:100%; padding:11px 13px; border:1px solid #D8E2EC; border-radius:8px; font-size:14px; font-family:inherit; color:var(--ink); background:#fff; transition:border-color .16s;}
.field input:focus,.field select:focus,.field textarea:focus{outline:none; border-color:var(--acc); box-shadow:0 0 0 3px rgba(14,147,132,.12);}
.field textarea{resize:vertical; min-height:74px;}
.form .btn-p{width:100%; justify-content:center; margin-top:4px;}
.form .tip{font-size:11.5px; color:var(--ink3); margin:12px 0 0; text-align:center; line-height:1.6;}

/* ---------- 咨询表单（与首页同一结构：label>span + 4 项字段） ---------- */
.contact-form{padding:28px; border:1px solid var(--line); border-radius:8px; background:#fff; box-shadow:0 18px 50px rgba(18,57,94,.10);}
.contact-form label{display:block; margin-bottom:16px;}
.contact-form span{display:block; margin-bottom:8px; color:var(--ink2); font-weight:700;}
.contact-form input,.contact-form select,.contact-form textarea{width:100%; border:1px solid #CBDDEB; border-radius:6px; padding:12px 14px; color:var(--ink); font:inherit; background:#FBFDFF;}
.contact-form input:focus,.contact-form select:focus,.contact-form textarea:focus{outline:none; border-color:var(--acc); box-shadow:0 0 0 3px rgba(14,147,132,.12);}
.contact-form textarea{resize:vertical;}
.contact-form .form-submit{width:100%; justify-content:center; text-align:center;}
.form-note{margin:14px 0 0; color:var(--ink3); font-size:13px; line-height:1.7;}
.form-note a{color:var(--acc-2); font-weight:600;}

/* ---------- 页脚 ---------- */
footer{background:#0C2237; color:#8FA8BC; font-size:13px; padding:48px 0 26px;}
.fgrid{display:grid; grid-template-columns:1.65fr 1fr 1fr 1.25fr; gap:34px; padding-bottom:32px; border-bottom:1px solid rgba(255,255,255,.09);}
footer .brand .nm{color:#fff;}
footer .brand .tag{color:#7E97AC; border-color:rgba(255,255,255,.14);}
footer .fbrief{font-size:12.5px; line-height:1.82; color:#7E97AC; margin:14px 0 0; max-width:330px;}
footer h5{font-size:13px; color:#D5E3EE; margin:0 0 12px; font-weight:700;}
footer ul{list-style:none; padding:0; margin:0;}
footer li{margin-bottom:8px; font-size:12.5px; line-height:1.6;}
footer a:hover{color:#7FE0D0;}
.fbot{display:flex; justify-content:space-between; gap:20px; padding-top:20px; font-size:12px; color:#63798C; flex-wrap:wrap; line-height:1.85;}
.fbot a{text-decoration:underline; text-underline-offset:2px;}
.flegal{max-width:560px;}

/* ---------- 响应式 ---------- */
@media (max-width:1120px){
  .menu > li > a{padding:8px 11px; font-size:14.4px;}
}
@media (max-width:980px){
  .menu,.drop{display:none;}
  .menu.mobile-open{
    display:flex; flex-direction:column; align-items:stretch; gap:0;
    position:absolute; top:100%; left:0; right:0; background:#fff;
    border-bottom:1px solid var(--line); box-shadow:0 14px 28px rgba(15,34,51,.09);
    padding:6px 20px 16px; margin:0;
  }
  .menu.mobile-open > li{border-bottom:1px solid var(--line2);}
  .menu.mobile-open > li:last-child{border-bottom:0;}
  .menu.mobile-open > li > a{padding:14px 2px; font-size:15.5px; border-radius:0;}
  .menu.mobile-open > li > a.on::after{display:none;}
  .burger{display:flex;}
  .brand .tag{display:none;}
}
@media (max-width:860px){
  .wrap{padding:0 20px;}
  .topbar .wrap{height:52px;}
  h1{font-size:29px;}
  .hero{padding:40px 0 36px;}
  section{padding:42px 0;}
  h2{font-size:23px;}
  .conv .inner{grid-template-columns:1fr; padding:42px 0; gap:32px;}
  .fgrid{grid-template-columns:1fr 1fr; gap:26px;}
}
@media (max-width:560px){
  .wrap{padding:0 16px;}
  .brand .nm{font-size:13.5px;}
  .topbar .tel{font-size:12.5px; gap:5px;}
  .topbar .tel svg{width:13px; height:13px;}
  h1{font-size:25px; letter-spacing:-.4px;}
  .hero .def{font-size:15px;}
  .btn{width:100%; justify-content:center;}
  .cta-row{flex-direction:column; align-items:stretch;}
  .form{padding:22px;}
  .fgrid{grid-template-columns:1fr;}
  .qa-q{font-size:15.4px; gap:10px;}
  .qa-a{font-size:14.2px;}
}
@media (max-width:400px){
  .brand .nm{display:none;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *{transition:none !important; animation:none !important;}
}