/* ============================================================
   智聘云 · 站点外壳（chrome）单一真源
   顶栏 nav / 页脚 footer / 联系弹窗 modal / 悬浮面板 float-panel
   - site.css 通过 @import 引入本文件（所有内页自动生效）
   - 首页 index.html 只链入本文件 + 自有样式，避免与整站 site.css 冲突
   - 结构由 site.js 统一注入（#site-nav / #site-footer / contactModal）
   改导航、改页脚，只改这里和 site.js。
   ============================================================ */
:root{
  --bg:#fff;
  --blue-50:#F3EEFA; --blue-100:#E9E0F7; --blue-200:#D4C4F0;
  --ink:#101014; --ink-2:#55565C; --ink-3:#9C9CA3;
  --line:#E8E8EC; --line-2:#F1F1F3;
  --blue:#5B21B6; --blue-2:#7C3AED; --blue-deep:#4C1D95; --on-blue:#fff;
  --orange:#0D9488; --orange-lt:#ECF9F6; --orange-deep:#0F766E;
  --green:#0D9488; --green-lt:#ECF9F6;
  --radius:14px; --radius-sm:9px; --radius-lg:18px;
  --shadow:0 1px 2px rgba(16,16,20,.05),0 18px 44px rgba(16,16,20,.08);
  --shadow-soft:0 1px 2px rgba(16,16,20,.04),0 8px 24px rgba(16,16,20,.05);
  --sans:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  --mono:"SF Mono","SFMono-Regular",ui-monospace,Menlo,monospace;
  --ease:cubic-bezier(.22,.68,.26,1);
  --gut:clamp(22px,5vw,72px);
  --max:1180px;

  /* ===== 全站字号规范（type scale · 2026-10 统一）=====
     hero 首屏大标题 / h2 区块标题 / h3 卡片条目标题 / lede 导语 /
     body 正文 / sm 辅助说明·芯片 / cap 徽章·标签·面包屑 / micro mono 眉标 /
     btn 主按钮。所有页面字号一律取自此表，改这里全站生效。 */
  --fs-hero:clamp(36px,4.6vw,58px);
  --fs-h2:clamp(26px,3.3vw,40px);
  --fs-h3:18px;
  --fs-lede:clamp(15px,1.3vw,17px);
  --fs-body:14px;
  --fs-sm:13px;
  --fs-cap:12.5px;
  --fs-micro:11.5px;
  --fs-btn:15px;
}

/* ============ 全局兜底 reset（内页无独立 reset，统一放这里） ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--sans);color:var(--ink);background:var(--bg);line-height:1.6;
  -webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer}
img{max-width:100%}

/* ============ 顶栏（滚动浮起 + 下拉） ============ */
.nav{position:fixed;top:0;left:0;right:0;z-index:50;display:flex;align-items:center;justify-content:space-between;
  padding:17px var(--gut);transition:background .4s var(--ease),box-shadow .4s var(--ease),padding .4s var(--ease)}
.nav.float{background:rgba(255,255,255,.82);backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);box-shadow:0 1px 0 var(--line);padding-top:12px;padding-bottom:12px}
.brand{white-space:nowrap;display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:17px;letter-spacing:-.01em;color:var(--ink)}
.brand-mark{width:29px;height:29px;border-radius:9px;background:var(--blue);color:#fff;font-weight:800;
  display:grid;place-items:center;font-size:15px;box-shadow:0 6px 14px rgba(67,56,202,.32)}
.brand-logo{width:29px;height:29px;object-fit:contain;display:block}
.brand small{font-family:var(--mono);font-weight:600;color:var(--ink-3);font-size:11px;letter-spacing:.08em;margin-left:1px}
.nav-links{display:flex;align-items:center;gap:clamp(10px,1.4vw,22px)}
.nav-item{position:relative}
.nav-item > a,.nav-item > button{display:inline-flex;align-items:center;gap:5px;font-size:14.5px;font-weight:600;
  letter-spacing:-.01em;color:var(--ink-2);white-space:nowrap;background:none;border:0;padding:6px 2px;
  transition:color .2s var(--ease)}
.nav-item > a:hover,.nav-item > button:hover{color:var(--blue)}
.nav-item .caret{width:7px;height:7px;border-right:1.6px solid currentColor;border-bottom:1.6px solid currentColor;
  transform:rotate(45deg) translateY(-2px);opacity:.6;transition:transform .25s var(--ease)}
.nav-item:hover .caret{transform:rotate(45deg) translateY(0);opacity:1}
/* 下拉面板 */
.dropdown{position:absolute;top:calc(100% + 10px);left:50%;transform:translateX(-50%) translateY(8px);
  background:#fff;border:1px solid var(--line);border-radius:18px;padding:10px;
  box-shadow:0 30px 60px -24px rgba(14,20,48,.28),0 4px 12px rgba(14,20,48,.06);
  opacity:0;visibility:hidden;pointer-events:none;transition:opacity .28s var(--ease),transform .28s var(--ease);z-index:60}
.dropdown.wide{display:grid;grid-template-columns:1fr 1fr;gap:4px;width:min(540px,86vw)}
.dropdown.product-catalog{width:min(680px,88vw);max-height:calc(100vh - 104px);overflow-y:auto}
.dropdown.product-catalog .d-feature{grid-column:1/-1;margin-bottom:4px;background:var(--blue-50)}
.nav-item-product.open .dropdown{opacity:1;visibility:visible;pointer-events:auto;transform:translateX(-50%) translateY(0)}
.nav-item-product.open > button{color:var(--blue)}
/* 透明桥:填平按钮与下拉之间的 10px 死区,鼠标下移不丢 hover,下拉不闪退 */
.dropdown::before{content:"";position:absolute;left:0;right:0;top:-14px;height:14px}
.nav-item:hover .dropdown{opacity:1;visibility:visible;pointer-events:auto;transform:translateX(-50%) translateY(0)}
.dropdown a{display:block;padding:12px 14px;border-radius:12px;transition:background .2s var(--ease)}
.dropdown a:hover{background:var(--blue-50)}
.dropdown .d-title{font-size:14.5px;font-weight:750;color:var(--ink);letter-spacing:-.01em}
.dropdown .d-desc{font-size:12.5px;color:var(--ink-3);margin-top:3px;line-height:1.45}
.nav-right{display:flex;align-items:center;gap:10px}
.nav-cta{display:inline-flex;align-items:center;gap:6px;padding:10px 18px;border-radius:999px;background:var(--blue);
  color:#fff !important;font-size:14px;font-weight:700;box-shadow:0 8px 20px -8px rgba(67,56,202,.6);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease)}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 14px 28px -8px rgba(67,56,202,.7)}
.nav-login{display:inline-flex;align-items:center;padding:9px 16px;border-radius:999px;border:1px solid var(--line);
  color:var(--ink-2) !important;font-size:14px;font-weight:600;transition:border-color .2s,color .2s}
.nav-login:hover{border-color:var(--blue);color:var(--blue) !important}
.nav-burger{display:none;background:none;border:0;padding:6px;margin-right:-6px;color:var(--ink);line-height:0}
.nav-burger svg{width:26px;height:26px;display:block}
.nav-burger .bg-close{display:none}
@media(max-width:1240px){
  .nav-links,.nav-right .nav-login{display:none}
  .nav-burger{display:inline-flex;align-items:center}
  .nav.menu-open{background:rgba(255,255,255,.98);backdrop-filter:blur(14px);box-shadow:0 1px 0 var(--line)}
  .nav.menu-open .bg-open{display:none}
  .nav.menu-open .bg-close{display:block}
  .nav.menu-open .nav-links{display:flex;flex-direction:column;align-items:stretch;gap:0;
    position:absolute;top:100%;left:0;right:0;background:#fff;border-top:1px solid var(--line);
    box-shadow:0 22px 44px -16px rgba(14,20,48,.22);padding:6px 0;max-height:calc(100vh - 64px);overflow:auto}
  .nav.menu-open .nav-item{border-bottom:1px solid var(--line-2)}
  .nav.menu-open .nav-item > a,.nav.menu-open .nav-item > button{padding:15px var(--gut);font-size:16px;color:var(--ink);width:100%}
  .nav.menu-open .nav-item .caret{display:none}
  .nav.menu-open .dropdown{position:static;transform:none;opacity:1;visibility:visible;pointer-events:auto;
    box-shadow:none;border:0;border-radius:0;padding:0 var(--gut) 10px;display:block;width:auto;background:var(--blue-50)}
  .nav.menu-open .dropdown a{padding:11px 12px}
  .nav.menu-open .nav-item-product .dropdown{opacity:1;visibility:visible;pointer-events:auto;transform:none}
}
@media(max-width:640px){
  .brand small{display:none}
  .nav-right{flex-shrink:0}
  .nav-cta{flex-shrink:0;white-space:nowrap;padding:9px 13px;font-size:12px}
}

/* ============ Footer ============ */
footer{padding:clamp(56px,7vw,92px) var(--gut) 40px;border-top:1px solid var(--line);background:#fff}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr 1fr;gap:clamp(28px,4vw,56px)}
.footer-grid .brand{margin-bottom:16px}
.brand-block p{margin:0;font-size:14px;line-height:1.7;color:var(--ink-3)}
footer h6{font-size:12px;font-family:var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3);margin:0 0 16px;font-weight:700}
footer ul{list-style:none;display:grid;gap:11px;margin:0;padding:0}
footer ul a{font-size:14px;color:var(--ink-2);transition:color .2s}
footer ul a:hover{color:var(--blue)}
.footer-bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;margin-top:clamp(40px,5vw,64px);
  padding-top:24px;border-top:1px solid var(--line);font-size:12.5px;color:var(--ink-3)}
@media(max-width:760px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:460px){.footer-grid{grid-template-columns:1fr}}

/* ============ 悬浮面板 ============ */
.float-panel{position:fixed;right:18px;bottom:24px;z-index:40;display:flex;flex-direction:column;gap:10px}
.fp-btn{position:relative;width:62px;min-height:62px;border:1px solid var(--line);border-radius:18px;background:#fff;
  color:var(--ink-2);font-size:12px;font-weight:700;line-height:1.2;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  box-shadow:var(--shadow);transition:transform .3s var(--ease),box-shadow .3s var(--ease),color .25s}
.fp-btn:hover{transform:translateY(-3px);color:var(--blue)}
.fp-btn .fp-icon{font-size:18px}
.fp-orange{background:linear-gradient(135deg,#5EEAD4,#2DD4BF);color:#fff;border-color:transparent}
.fp-orange:hover{color:#fff}
.fp-green .fp-icon{color:var(--green)}
.fp-tip{position:absolute;right:calc(100% + 12px);top:50%;transform:translateY(-50%) translateX(6px);
  background:var(--ink);color:#fff;font-size:12px;font-weight:600;white-space:nowrap;padding:8px 12px;border-radius:10px;
  opacity:0;pointer-events:none;transition:opacity .25s var(--ease),transform .25s var(--ease)}
.fp-btn:hover .fp-tip{opacity:1;transform:translateY(-50%) translateX(0)}
@media(max-width:600px){.float-panel{right:12px;bottom:14px}.fp-btn{width:54px;min-height:54px}.fp-tip{display:none}}

/* ============ 弹窗 ============ */
.modal-overlay{position:fixed;inset:0;z-index:80;background:rgba(14,20,48,.5);backdrop-filter:blur(6px);
  display:flex;align-items:center;justify-content:center;padding:20px;opacity:0;visibility:hidden;transition:opacity .3s var(--ease)}
.modal-overlay.open{opacity:1;visibility:visible}
.modal{position:relative;background:#fff;border-radius:var(--radius-lg);width:100%;max-width:560px;overflow:hidden;
  box-shadow:0 40px 100px -30px rgba(14,20,48,.5);transform:translateY(20px) scale(.98);transition:transform .35s var(--ease)}
.modal-overlay.open .modal{transform:none}
.modal-hd{position:relative;padding:clamp(28px,4vw,40px) clamp(26px,3.4vw,40px) clamp(22px,2.6vw,30px);
  background:linear-gradient(150deg,var(--blue),var(--blue-2));color:#fff}
.mclose,.qr-close{position:absolute;top:16px;right:18px;width:34px;height:34px;border-radius:50%;border:0;
  background:rgba(255,255,255,.18);color:#fff;font-size:20px;line-height:1;display:grid;place-items:center}
.qr-close{background:var(--blue-50);color:var(--ink-2)}
.meyebrow{font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;opacity:.85;margin-bottom:14px}
.modal-hd h3{font-size:clamp(20px,2.2vw,26px);font-weight:840;letter-spacing:-.02em;line-height:1.32;max-width:22ch}
.modal-kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:24px}
.mkpi .v{font-size:24px;font-weight:850;letter-spacing:-.03em;line-height:1}
.mkpi .l{font-size:11px;opacity:.82;margin-top:6px;line-height:1.3}
.modal-bd{padding:clamp(24px,3vw,32px) clamp(26px,3.4vw,40px) clamp(26px,3.4vw,36px)}
.m-use-cases{display:grid;gap:14px;margin-bottom:24px}
.m-uc{display:flex;gap:14px;align-items:flex-start}
.m-uc .uc-icon{font-size:22px;flex-shrink:0;width:42px;height:42px;border-radius:12px;background:var(--blue-50);display:grid;place-items:center}
.m-uc .uc-text strong{display:block;font-size:14.5px;font-weight:750;margin-bottom:3px}
.m-uc .uc-text span{font-size:13px;color:var(--ink-2);line-height:1.55}
.m-cta-row{display:flex;gap:12px;flex-wrap:wrap}
.m-cta-row .btn-primary,.m-cta-row .btn-secondary{display:inline-flex;align-items:center;gap:8px;padding:13px 22px;border-radius:999px;
  font-size:14.5px;font-weight:700;border:1px solid transparent}
.m-cta-row .btn-primary{background:var(--blue);color:#fff;box-shadow:0 10px 24px -10px rgba(67,56,202,.6)}
.m-cta-row .btn-secondary{background:#fff;color:var(--ink-2);border-color:var(--line)}
.m-note{font-size:12.5px;color:var(--ink-3);margin-top:16px;text-align:center}
.modal-qr{text-align:center;padding:clamp(34px,4vw,46px) clamp(28px,3.4vw,40px)}
.qr-eyebrow{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--orange-deep);margin-bottom:12px}
.qr-title{font-size:22px;font-weight:840;letter-spacing:-.02em;margin-bottom:22px}
.qr-img{width:200px;height:200px;margin:0 auto 18px;border-radius:14px;border:1px solid var(--line)}
.qr-note{font-size:13.5px;color:var(--ink-3)}
.modal-qr .qr-fig{width:64px;height:64px;border-radius:50%;object-fit:cover;
  border:2px solid #fff;box-shadow:0 8px 22px rgba(16,16,20,.16),0 0 0 1px var(--line);margin:0 auto 14px}
@media(max-width:480px){.modal-kpis{grid-template-columns:repeat(2,1fr)}}