/* ═══════════════════════════════════════════════════════════
   Daedalus.AI — 全站设计系统（雾面留白风 / Fynex）
   首页 index.html 与产品页 product.html 为基准，全站共用本文件。
   页面独有的组件写在各自 <style> 里，不要往这里堆。
   ═══════════════════════════════════════════════════════════ */

:root{
  --bg:#FBFCFE;
  --ink:#0B1B33;            /* 品牌深蓝墨 */
  --muted:#5A6B85;
  --faint:#93A2BA;
  --line:#E6EBF4;
  --line-soft:rgba(11,27,51,.06);
  --accent:#1554E8;
  --accent-2:#5B8DF6;
  --accent-3:#8FA9F8;
  --ok:#047857;
  --warn:#B45309;
  --sans:"Inter","HarmonyOS Sans SC","Noto Sans SC","Source Han Sans SC",-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  --mono:"SFMono-Regular",ui-monospace,"IBM Plex Mono",Menlo,monospace;
  --ease:cubic-bezier(.16,1,.3,1);
  --glass:linear-gradient(148deg, rgba(255,255,255,.92), rgba(255,255,255,.44));
  --glass-br:1px solid rgba(255,255,255,.9);
  --glass-sh:0 1px 1px rgba(11,27,51,.03),
             0 10px 24px -12px rgba(11,27,51,.14),
             0 32px 64px -36px rgba(21,84,232,.28),
             inset 0 1px 0 rgba(255,255,255,.95);
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--bg); color:var(--ink); font-family:var(--sans);
  font-size:16px; line-height:1.7; -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
::selection{background:rgba(21,84,232,.12)}
img{max-width:100%}

/* ═══ 雾面渐变底 ═══ */
.mist{position:fixed; inset:0; z-index:0; pointer-events:none; overflow:hidden}
.mist i{position:absolute; display:block; border-radius:50%; filter:blur(90px)}
.mist i:nth-child(1){width:780px;height:780px; top:-280px; left:-160px;
  background:radial-gradient(circle,rgba(91,141,246,.34),transparent 68%); animation:d1 26s ease-in-out infinite}
.mist i:nth-child(2){width:680px;height:680px; top:-160px; right:-180px;
  background:radial-gradient(circle,rgba(143,169,248,.30),transparent 68%); animation:d2 31s ease-in-out infinite}
.mist i:nth-child(3){width:620px;height:620px; top:46%; left:38%;
  background:radial-gradient(circle,rgba(21,84,232,.14),transparent 70%); animation:d3 37s ease-in-out infinite}
.mist i:nth-child(4){width:520px;height:520px; bottom:-200px; right:8%;
  background:radial-gradient(circle,rgba(143,169,248,.22),transparent 70%); animation:d1 33s ease-in-out infinite}
@keyframes d1{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(60px,50px) scale(1.13)}}
@keyframes d2{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(-52px,64px) scale(1.09)}}
@keyframes d3{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(40px,-56px) scale(1.16)}}

.page{position:relative; z-index:2}
.col{max-width:1200px; margin:0 auto; padding:0 48px}
.col-n{max-width:820px; margin:0 auto; padding:0 48px}   /* 窄栏：文章 / 表单 */

/* ═══ 导航 ═══ */
nav{position:sticky; top:0; z-index:60; padding:18px 0;
    background:rgba(251,252,254,.62); backdrop-filter:blur(18px) saturate(1.5);
    border-bottom:1px solid rgba(11,27,51,.045)}
.nav-in{max-width:1200px;margin:0 auto;padding:0 48px;display:flex;align-items:center;gap:46px}
.wordmark{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink)}
.wordmark svg{display:block;flex-shrink:0}
.wm-t{display:flex;flex-direction:column;line-height:1.2}
.wm-t .en{font-weight:600;font-size:15.5px;letter-spacing:-.01em}
.wm-t .cn{margin-top:2px;font-size:11px;letter-spacing:.06em;color:var(--muted)}
.nav-l{display:flex;gap:30px}
.nav-l a{color:var(--muted);text-decoration:none;font-size:14.5px;transition:color .25s var(--ease)}
.nav-l a:hover,.nav-l a.on{color:var(--ink)}
.nav-r{display:flex;gap:12px;align-items:center}
/* 语言切换：放在 .nav-l 和 .nav-r 中间，由它吃掉 auto 边距，
   这样手机端导航收起时它仍然露在外面，不用再复制一份 DOM */
.lang{margin-left:auto;display:flex;align-items:center;gap:2px;padding:3px;
      border-radius:9px;background:rgba(11,27,51,.045);
      border:1px solid rgba(11,27,51,.06)}
.lang a{font-size:12.5px;line-height:1;padding:6px 9px;border-radius:6px;
        color:var(--faint);text-decoration:none;white-space:nowrap;
        transition:color .25s var(--ease),background .25s var(--ease)}
.lang a:hover{color:var(--ink)}
.lang a.on{background:#fff;color:var(--ink);font-weight:600;
           box-shadow:0 1px 2px rgba(11,27,51,.08)}
.nav-tg{display:none;margin-left:10px;width:38px;height:38px;padding:0;cursor:pointer;
        border:1px solid rgba(11,27,51,.09);border-radius:10px;background:rgba(255,255,255,.72);
        color:var(--ink);backdrop-filter:blur(10px);
        flex-direction:column;align-items:center;justify-content:center}
.nav-tg span,.nav-tg::before,.nav-tg::after{content:"";display:block;width:16px;height:1.5px;
        background:currentColor;transition:transform .22s var(--ease),opacity .22s var(--ease)}
.nav-tg span{margin:4.5px 0}
.nav-tg[aria-expanded="true"]::before{transform:translateY(6px) rotate(45deg)}
.nav-tg[aria-expanded="true"] span{opacity:0}
.nav-tg[aria-expanded="true"]::after{transform:translateY(-6px) rotate(-45deg)}

/* ═══ 按钮 ═══ */
.btn{display:inline-flex;align-items:center;gap:8px;font-size:14.5px;font-weight:500;
     font-family:inherit;cursor:pointer;border:none;
     text-decoration:none;padding:11px 24px;border-radius:10px;transition:all .38s var(--ease)}
.btn-p{background:linear-gradient(180deg,#3C74F1,var(--accent));color:#fff;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.38),0 1px 2px rgba(11,27,51,.10),0 10px 24px -10px rgba(21,84,232,.62)}
.btn-p:hover{transform:translateY(-2px);box-shadow:inset 0 1px 0 rgba(255,255,255,.46),0 16px 34px -12px rgba(21,84,232,.75)}
.btn-g{color:var(--ink);background:rgba(255,255,255,.7);border:1px solid rgba(11,27,51,.08);
  backdrop-filter:blur(10px);box-shadow:0 1px 2px rgba(11,27,51,.04)}
.btn-g:hover{transform:translateY(-2px);background:#fff;box-shadow:0 12px 26px -12px rgba(11,27,51,.2)}
.btn-sm{padding:9px 18px;font-size:13.5px}

/* ═══ 玻璃卡片 ═══ */
.glass{
  background:linear-gradient(158deg,rgba(255,255,255,.88),rgba(255,255,255,.56));
  border:1px solid rgba(255,255,255,.92);
  backdrop-filter:blur(20px) saturate(1.3);
  border-radius:20px;
  box-shadow:0 1px 1px rgba(11,27,51,.03),
             0 12px 28px -16px rgba(11,27,51,.16),
             0 40px 80px -44px rgba(21,84,232,.26),
             inset 0 1px 0 rgba(255,255,255,.95);
  transition:transform .5s var(--ease), box-shadow .5s var(--ease);
}
.glass-h:hover{transform:translateY(-6px);
  box-shadow:0 1px 1px rgba(11,27,51,.03),0 20px 40px -18px rgba(11,27,51,.2),
             0 54px 100px -48px rgba(21,84,232,.34),inset 0 1px 0 rgba(255,255,255,.95)}

/* ═══ 排版 ═══ */
.sec{padding:88px 0}
h1{font-size:clamp(38px,5.2vw,64px);font-weight:600;letter-spacing:-.035em;line-height:1.14}
h2{font-size:clamp(28px,3.6vw,44px);font-weight:600;letter-spacing:-.03em;line-height:1.2}
h3{font-size:20px;font-weight:600;letter-spacing:-.012em}
h4{font-size:15.5px;font-weight:600}
.lead{margin-top:20px;font-size:17px;line-height:1.9;color:var(--muted);max-width:40em}
.lead strong{color:var(--ink);font-weight:600}
.lead a{color:var(--accent);text-decoration:none;border-bottom:1px solid rgba(21,84,232,.28)}
.mid{text-align:center}
.mid .lead{margin-left:auto;margin-right:auto;text-align:center}
.kick{display:inline-flex;align-items:center;gap:9px;font-family:var(--mono);
      font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);
      background:rgba(21,84,232,.07);padding:7px 15px;border-radius:999px;margin-bottom:22px}
.pill{font-size:10.5px;font-weight:600;padding:3px 10px;border-radius:999px;border:1px solid;
      letter-spacing:0;text-transform:none;font-family:var(--sans)}
.p-ok{color:var(--ok);border-color:rgba(4,120,87,.26);background:rgba(4,120,87,.07)}
.p-beta{color:var(--warn);border-color:rgba(180,83,9,.26);background:rgba(180,83,9,.07)}
.p-name{color:var(--accent);border-color:rgba(21,84,232,.26);background:rgba(21,84,232,.07)}
.rv{opacity:0;transform:translateY(22px);transition:opacity .95s var(--ease),transform .95s var(--ease)}
.rv.in{opacity:1;transform:none}

/* ═══ 子页 Hero ═══ */
.phero{padding:80px 0 44px;text-align:center}
.phero .lead{margin-left:auto;margin-right:auto}

/* ═══ 收尾 CTA ═══ */
.end{text-align:center;padding:92px 0 100px}
.end .lead{margin-left:auto;margin-right:auto;text-align:center}
.end-cta{display:flex;gap:14px;justify-content:center;margin-top:38px;flex-wrap:wrap}

/* ═══ 表单控件 ═══ */
.field{display:flex;flex-direction:column;gap:8px}
.field label{font-size:13.5px;font-weight:500;color:var(--muted)}
.field .req{color:var(--accent);margin-left:3px}
.field input,.field select,.field textarea{
  font-family:inherit;font-size:14.5px;color:var(--ink);
  padding:12px 14px;border-radius:11px;background:rgba(255,255,255,.78);
  border:1px solid rgba(11,27,51,.09);outline:none;width:100%;
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease),background .3s var(--ease)}
.field textarea{min-height:104px;resize:vertical;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{
  background:#fff;border-color:var(--accent);box-shadow:0 0 0 4px rgba(21,84,232,.1)}
.field input::placeholder,.field textarea::placeholder{color:var(--faint)}

/* ═══ 正文 prose（Blog 文章）═══ */
.prose p{margin-top:15px;font-size:16px;line-height:1.95;color:#2A3A55}
.prose p strong{color:var(--ink);font-weight:600}
.prose h2{margin-top:46px;font-size:23px;letter-spacing:-.02em}
.prose ul{margin-top:13px;padding-left:21px}
.prose li{margin-top:9px;font-size:15.5px;line-height:1.85;color:#2A3A55}
.prose a{color:var(--accent);text-decoration:none;border-bottom:1px solid rgba(21,84,232,.28)}
.prose code{font-family:var(--mono);font-size:13px;background:rgba(11,27,51,.05);
            padding:2px 6px;border-radius:6px;color:var(--ink)}
.prose pre{margin-top:18px;padding:18px 20px;border-radius:14px;overflow-x:auto;
           background:linear-gradient(180deg,#101C30,#0A1322);
           box-shadow:0 20px 44px -24px rgba(11,27,51,.5)}
.prose pre code{background:none;padding:0;color:#DCE6F8;font-size:12.5px;line-height:1.95}
.prose blockquote{margin-top:26px;padding:18px 22px;border-radius:14px;
  background:rgba(21,84,232,.05);border-left:2px solid var(--accent);
  font-size:15.5px;line-height:1.85;color:var(--muted)}
.prose figure{margin-top:28px}
.prose figure img{display:block;width:100%;border-radius:14px;border:1px solid rgba(11,27,51,.07)}
.prose figcaption{margin-top:10px;font-family:var(--mono);font-size:11px;
                  color:var(--faint);letter-spacing:.04em}
.prose table{width:100%;margin-top:22px;border-collapse:collapse;font-size:14px}
.prose th{text-align:left;padding:11px 14px;font-size:12px;font-weight:600;color:var(--faint);
          letter-spacing:.06em;text-transform:uppercase;border-bottom:1px solid var(--line)}
.prose td{padding:13px 14px;border-bottom:1px solid var(--line-soft);
          color:var(--muted);line-height:1.7;vertical-align:top}
.prose td:first-child{color:var(--ink);font-weight:500;white-space:nowrap}

/* ═══ 页脚 ═══ */
footer{position:relative;z-index:2;border-top:1px solid var(--line);margin-top:8px;
       padding:52px 0 44px;background:rgba(251,252,254,.6)}
.ft-top{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:40px}
.ft-brand .wordmark{margin-bottom:18px}
.ft-co{font-size:13.5px;color:var(--muted);line-height:1.9}
.ft-co b{display:block;color:var(--ink);font-weight:600}
.ft-mail{display:inline-block;margin-top:12px;font-family:var(--mono);font-size:13px;
         color:var(--accent);text-decoration:none}
.ft-mail:hover{border-bottom:1px solid rgba(21,84,232,.3)}
.ft-col h5{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;
           color:var(--faint);margin-bottom:16px;font-weight:500}
.ft-col a{display:block;padding:5px 0;font-size:14px;color:var(--muted);text-decoration:none;
          transition:color .25s var(--ease)}
.ft-col a:hover{color:var(--ink)}
.ft-bot{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;
        margin-top:40px;padding-top:22px;border-top:1px solid var(--line-soft);
        font-size:12.5px;color:var(--faint)}
.ft-bot a{color:var(--muted);text-decoration:none}
.ft-bot a:hover{color:var(--ink)}

/* ═══ 响应式 ═══ */
@media(max-width:960px){
  .col,.col-n,.nav-in{padding:0 26px}
  .nav-l,.nav-r{display:none}
  .nav-tg{display:flex}
  .lang{margin-left:auto}
  /* 移动端展开：导航自身变成纵向面板，不用绝对定位猜高度 */
  nav.open .nav-in{flex-wrap:wrap;gap:0}
  nav.open .nav-l{display:flex;flex-direction:column;order:3;width:100%;gap:2px;margin-top:14px;
    padding-top:12px;border-top:1px solid var(--line-soft)}
  nav.open .nav-l a{padding:11px 4px;font-size:15px}
  nav.open .nav-r{display:flex;order:4;width:100%;margin-left:0;margin-top:12px;gap:10px}
  nav.open .nav-r .btn{flex:1;justify-content:center}
  .sec{padding:66px 0}
  .phero{padding:56px 0 34px}
  .end{padding:70px 0 78px}
  .ft-top{grid-template-columns:1fr;gap:32px}
  footer{padding:44px 0 40px}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .rv{opacity:1;transform:none}
}