/* 夏娃智能科技官网样式 */
:root{
  --navy-950:#07101f;
  --navy-900:#0b1b33;
  --navy-800:#0f2544;
  --navy-700:#16315a;
  --blue-600:#1d6fd8;
  --blue-500:#2b82e6;
  --cyan-400:#38bdf8;
  --sky-100:#e7f2ff;
  --paper:#ffffff;
  --paper-soft:#f4f8fc;
  --ink:#0f2440;
  --ink-muted:#54677f;
  --line:#dce7f3;
  --white:#ffffff;
  --radius:14px;
  --shadow-soft:0 18px 40px -24px rgba(11,27,51,.35);
  --maxw:1180px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  color:var(--ink);background:var(--paper);line-height:1.7;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
h1,h2,h3{line-height:1.25;font-weight:900;letter-spacing:.2px}
.section{padding:96px 0}
.section--dark{background:var(--navy-900);color:var(--white)}
.section--soft{background:var(--paper-soft)}

/* ---------- header ---------- */
.site-header{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(11,27,51,.92);backdrop-filter:blur(10px);border-bottom:1px solid rgba(255,255,255,.08);transition:background .3s}
.header-in{max-width:var(--maxw);margin:0 auto;padding:14px 24px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:12px;color:#fff}
.brand-mark{width:42px;height:42px;flex:none;border-radius:10px;display:block}
.brand-name{display:inline-block;font-size:19px;font-weight:900;letter-spacing:.5px;line-height:1.15;white-space:nowrap}
.brand-sub{display:inline-block;font-size:11px;color:var(--cyan-400);letter-spacing:1.5px;margin-left:12px;white-space:nowrap}
.nav{display:flex;align-items:center;gap:4px}
.nav a{color:#cfdcf0;font-size:14.5px;font-weight:500;padding:8px 13px;border-radius:8px;transition:color .2s,background .2s}
.nav a:hover{color:#fff;background:rgba(255,255,255,.08)}
.nav-cta{margin-left:12px;background:var(--cyan-400);color:var(--navy-950)!important;font-weight:700;padding:10px 20px!important;border-radius:999px}
.nav-cta:hover{background:#5cc7fb;color:var(--navy-950)!important}
.menu-btn{display:none;background:none;border:1px solid rgba(255,255,255,.25);border-radius:8px;width:44px;height:44px;cursor:pointer;position:relative}
.menu-btn span{position:absolute;left:11px;right:11px;height:2px;background:#fff;border-radius:2px;transition:.3s}
.menu-btn span:nth-child(1){top:14px}
.menu-btn span:nth-child(2){top:20px}
.menu-btn span:nth-child(3){top:26px}
.menu-btn.open span:nth-child(1){top:20px;transform:rotate(45deg)}
.menu-btn.open span:nth-child(2){opacity:0}
.menu-btn.open span:nth-child(3){top:20px;transform:rotate(-45deg)}
.mobile-nav{display:none;position:fixed;top:70px;left:0;right:0;background:var(--navy-900);flex-direction:column;padding:12px 24px 20px;border-bottom:1px solid rgba(255,255,255,.08);z-index:99}
.mobile-nav.open{display:flex}
.mobile-nav a{color:#cfdcf0;padding:13px 6px;font-size:16px;border-bottom:1px solid rgba(255,255,255,.06);font-weight:500}
.mobile-nav a.cta{color:var(--cyan-400);font-weight:700}

/* ---------- mobile bottom tabbar ---------- */
.mobile-tabbar{position:fixed;left:0;right:0;bottom:0;z-index:95;display:none;align-items:stretch;background:rgba(11,27,51,.96);backdrop-filter:blur(10px);border-top:1px solid rgba(255,255,255,.1);padding:6px 6px calc(6px + env(safe-area-inset-bottom,0px));}
.m-tab{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;padding:6px 2px;color:#9fb0c9;font-size:10.5px;font-weight:500;text-decoration:none;border-radius:10px;min-height:52px;line-height:1.2}
.m-tab svg{width:21px;height:21px}
.m-tab.active,.m-tab:hover{color:#38bdf8}
.m-tab--phone{color:#38bdf8}
body.has-tabbar{padding-bottom:72px}
@media(max-width:820px){
  .mobile-tabbar{display:flex}
  body{padding-bottom:72px}
  .hero{padding-bottom:130px}
}

/* ---------- hero ---------- */
.hero{position:relative;padding:150px 0 90px;color:#fff;overflow:hidden;background:var(--navy-950)}
.hero-bg{position:absolute;inset:0;background:url('../hero.png') center/cover no-repeat}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(7,16,31,.94) 0%,rgba(7,16,31,.72) 42%,rgba(7,16,31,.28) 100%)}
.hero-grid{position:absolute;inset:0;opacity:.5;background-image:linear-gradient(rgba(56,189,248,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(56,189,248,.08) 1px,transparent 1px);background-size:56px 56px}
.hero-in{position:relative;z-index:2;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--cyan-400);font-size:14px;font-weight:500;letter-spacing:1px;margin-bottom:22px;border:1px solid rgba(56,189,248,.35);padding:7px 14px;border-radius:999px;background:rgba(56,189,248,.08)}
.hero-eyebrow::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--cyan-400);box-shadow:0 0 0 4px rgba(56,189,248,.2)}
.hero h1{font-size:60px;line-height:1.12;font-weight:900;max-width:15em}
.hero h1 .accent{color:var(--cyan-400)}
.hero-sub{font-size:18px;color:#c8d8ee;max-width:520px;margin-top:22px;font-weight:300}
.hero-actions{display:flex;gap:14px;margin-top:34px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:700;border-radius:999px;padding:14px 28px;font-size:15.5px;cursor:pointer;border:none;transition:transform .2s,background .2s}
.btn svg{width:17px;height:17px}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:var(--cyan-400);color:var(--navy-950)}
.btn-primary:hover{background:#5cc7fb}
.btn-ghost{background:rgba(255,255,255,.08);color:#fff;border:1px solid rgba(255,255,255,.3)}
.btn-ghost:hover{background:rgba(255,255,255,.16)}
.hero-chips{display:flex;flex-wrap:wrap;gap:12px;margin-top:44px}
.chip{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:#dfeafb;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);padding:9px 16px;border-radius:10px}
.chip b{color:#fff;font-weight:700}
.chip .dot{width:7px;height:7px;border-radius:50%;background:var(--cyan-400);flex:none}

/* ---------- section head ---------- */
.sec-head{margin-bottom:52px}
.sec-head .kicker{color:var(--blue-600);font-weight:700;letter-spacing:2px;font-size:13px;display:block;margin-bottom:10px}
.sec-head h2{font-size:38px;color:var(--ink)}
.section--dark .sec-head h2{color:#fff}
.sec-head .kicker.dark{color:var(--cyan-400)}
.sec-head p.lead{font-size:16.5px;color:var(--ink-muted);max-width:620px;margin-top:14px}
.section--dark .sec-head p.lead{color:#b6c8e0}

/* ---------- about ---------- */
.about-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center}
.about-figure{position:relative}
.about-figure img{border-radius:18px;box-shadow:var(--shadow-soft);width:100%;height:auto}
.about-tag{position:absolute;left:18px;bottom:18px;background:rgba(7,16,31,.82);color:#fff;padding:12px 18px;border-radius:12px;border-left:3px solid var(--cyan-400)}
.about-tag b{display:block;font-size:15px}
.about-tag span{font-size:12px;color:#b6c8e0}
.about-copy h3{font-size:26px;margin-bottom:16px}
.about-copy p{color:var(--ink-muted);margin-bottom:14px;font-size:15.5px}
.about-copy p strong{color:var(--ink)}
.raas-band{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:16px;overflow:hidden;margin-top:28px}
.raas-item{background:#fff;padding:20px 18px}
.raas-item .num{font-size:26px;font-weight:900;color:var(--blue-600);line-height:1}
.raas-item .lbl{font-size:12.5px;color:var(--ink-muted);margin-top:6px}

/* ---------- services ---------- */
.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.svc-card{background:#fff;border-radius:18px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-soft);display:flex;flex-direction:column;transition:transform .25s,box-shadow .25s}
.svc-card:hover{transform:translateY(-6px);box-shadow:0 26px 48px -26px rgba(11,27,51,.5)}
.svc-media{position:relative;aspect-ratio:4/3;overflow:hidden}
.svc-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.svc-card:hover .svc-media img{transform:scale(1.05)}
.svc-hot{position:absolute;top:14px;left:14px;background:var(--cyan-400);color:var(--navy-950);font-size:11.5px;font-weight:700;padding:5px 12px;border-radius:999px}
.svc-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1}
.svc-body h3{font-size:19px;margin-bottom:8px}
.svc-body p{font-size:14px;color:var(--ink-muted);flex:1}
.svc-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.svc-tags span{font-size:12px;color:var(--blue-600);background:var(--sky-100);padding:4px 10px;border-radius:999px;font-weight:500}

/* ---------- scenarios ---------- */
.scn-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.scn-card{position:relative;border-radius:18px;min-height:172px;padding:26px 24px;display:flex;flex-direction:column;gap:16px;justify-content:flex-start;cursor:pointer;border:1px solid var(--line);text-align:left;width:100%;background:linear-gradient(160deg,#eaf4ff 0%,#f7fbff 100%);transition:transform .25s,box-shadow .25s,border-color .25s}
.scn-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-soft);border-color:#bfd9f4}
.scn-card .ic{width:52px;height:52px;border-radius:13px;background:var(--blue-600);display:flex;align-items:center;justify-content:center;color:#fff;box-shadow:0 10px 20px -8px rgba(29,111,216,.5)}
.scn-card .ic svg{width:26px;height:26px}
.scn-info h3{font-size:19px;margin-bottom:5px;color:var(--ink)}
.scn-info p{font-size:13.5px;color:var(--ink-muted)}

/* ---------- why ---------- */
.why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.why-card{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:18px;padding:28px 26px;transition:transform .25s,background .25s}
.why-card:hover{transform:translateY(-5px);background:rgba(255,255,255,.09)}
.why-icon{width:52px;height:52px;border-radius:13px;background:rgba(56,189,248,.14);display:flex;align-items:center;justify-content:center;color:var(--cyan-400);margin-bottom:18px}
.why-icon svg{width:26px;height:26px}
.why-card h3{font-size:19px;margin-bottom:10px;color:#fff}
.why-card p{font-size:14px;color:#b6c8e0}

/* ---------- partner ---------- */
.partner-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-bottom:64px}
.pt-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:30px 26px;box-shadow:var(--shadow-soft)}
.pt-step{font-size:13px;font-weight:700;color:var(--blue-600);letter-spacing:1px;margin-bottom:10px}
.pt-card h3{font-size:20px;margin-bottom:10px}
.pt-card p{font-size:14px;color:var(--ink-muted)}
/* timeline */
.tl{display:grid;grid-template-columns:130px 60px 1fr;gap:0;margin:0 auto}
.tl-row{display:contents}
.tl-time{padding:22px 0;color:var(--cyan-400);font-weight:700;font-size:15px;text-align:right;align-self:start}
.tl-axis{display:flex;justify-content:center;align-self:stretch;position:relative}
.tl-axis::before{content:"";position:absolute;top:0;bottom:0;left:50%;width:2px;background:linear-gradient(to bottom,rgba(56,189,248,.05),rgba(56,189,248,.4),rgba(56,189,248,.05));transform:translateX(-50%)}
.tl-node{display:block;width:16px;height:16px;border-radius:50%;background:var(--cyan-400);border:3px solid var(--navy-900);box-shadow:0 0 0 4px rgba(56,189,248,.18);margin-top:30px;align-self:start;justify-self:center}
.tl-body{padding:20px 0 22px 26px}
.tl-body h3{font-size:19px;margin-bottom:6px}
.tl-body p{font-size:14px;color:#b6c8e0;max-width:520px}

/* ---------- cases ---------- */
.cases-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.case-card{border-radius:18px;overflow:hidden;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-soft)}
.case-media{position:relative;aspect-ratio:16/9;overflow:hidden}
.case-media img{width:100%;height:100%;object-fit:cover}
.case-badge{position:absolute;top:14px;left:14px;background:rgba(7,16,31,.75);color:#fff;font-size:11.5px;padding:5px 12px;border-radius:999px;border:1px solid rgba(255,255,255,.2)}
.case-body{padding:20px 22px 24px}
.case-body h3{font-size:18px;margin-bottom:6px}
.case-body p{font-size:13.5px;color:var(--ink-muted)}
.case-meta{font-size:12.5px;color:var(--blue-600);font-weight:600;margin-bottom:8px}
.case-badge-static{display:inline-block;background:var(--sky-100);color:var(--blue-600);font-size:11.5px;font-weight:600;padding:4px 12px;border-radius:999px;margin-bottom:10px}
.case-note{margin-top:30px;font-size:13px;color:var(--ink-muted);background:var(--paper-soft);border:1px dashed var(--line);border-radius:12px;padding:14px 18px;text-align:center}

/* ---------- contact ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:48px;align-items:start}
.contact-info .c-item{display:flex;gap:16px;align-items:flex-start;padding:18px 0;border-bottom:1px solid var(--line)}
.contact-info .c-item:last-child{border-bottom:none}
.c-icon{width:46px;height:46px;border-radius:12px;background:var(--sky-100);color:var(--blue-600);display:flex;align-items:center;justify-content:center;flex:none}
.c-icon svg{width:22px;height:22px}
.c-label{font-size:12.5px;color:var(--ink-muted)}
.c-value{font-size:16px;font-weight:700;color:var(--ink);margin-top:2px}
.c-value a:hover{color:var(--blue-600)}
.c-value .todo{color:var(--ink-muted);font-weight:400;font-size:13.5px}
.c-form{background:var(--navy-900);color:#fff;border-radius:20px;padding:36px 34px}
.c-form h3{font-size:22px;margin-bottom:6px}
.c-form .sub{font-size:13.5px;color:#b6c8e0;margin-bottom:24px}
.f-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.f-field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}
.f-field label{font-size:13px;color:#c8d8ee}
.f-field input,.f-field select,.f-field textarea{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);border-radius:10px;padding:12px 14px;color:#fff;font-size:14.5px;font-family:inherit;outline:none}
.f-field input::placeholder,.f-field textarea::placeholder{color:#7f93b5}
.f-field input:focus,.f-field select:focus,.f-field textarea:focus{border-color:var(--cyan-400);background:rgba(255,255,255,.1)}
.f-field select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2338bdf8' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center}
.f-field select option{color:#0f2440}
.f-field textarea{resize:vertical;min-height:96px}
.f-submit{width:100%;margin-top:6px}
.form-ok{display:none;margin-top:16px;padding:14px 16px;border-radius:12px;background:rgba(56,189,248,.14);border:1px solid rgba(56,189,248,.4);color:#a7e6ff;font-size:14px}
.form-ok.show{display:block}

/* ---------- footer ---------- */
.site-footer{background:var(--navy-950);color:#9fb0c9;padding:56px 0 40px}
.foot-top{display:flex;justify-content:space-between;gap:32px;flex-wrap:wrap;padding-bottom:34px;border-bottom:1px solid rgba(255,255,255,.08)}
.foot-brand{max-width:360px}
.foot-brand .brand-name{color:#fff}
.foot-brand p{font-size:13.5px;margin-top:12px}
.foot-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;flex:1;max-width:600px}
.foot-col h4{color:#fff;font-size:14px;font-weight:700;margin-bottom:14px;letter-spacing:.5px}
.foot-col a,.foot-col div{display:block;font-size:13.5px;padding:5px 0;color:#9fb0c9;transition:color .2s}
.foot-col a{min-height:44px;display:flex;align-items:center}
.foot-col a:hover{color:#fff}
.foot-bottom{margin-top:26px;font-size:12.5px;color:#6b7f9c;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
  .svc-card:hover .svc-media img,.scn-card:hover img{transform:none}
}

/* ---------- responsive ---------- */
@media(max-width:1024px){
  .about-grid{grid-template-columns:1fr;gap:36px}
  .services-grid,.scn-grid,.why-grid,.partner-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:820px){
  .nav{display:none}
  .menu-btn{display:block}
  .header-in{padding:10px 16px;gap:10px}
  .brand{gap:10px}
  .brand-mark{width:36px;height:36px}
  .brand-name{display:block;font-size:17px}
  .brand-sub{display:block;font-size:10px;letter-spacing:1px;margin-left:0;margin-top:3px}
  .hero{padding:128px 0 70px}
  .hero h1{font-size:40px}
  .services-grid,.scn-grid,.why-grid,.partner-grid,.cases-grid,.raas-band,.contact-grid{grid-template-columns:1fr}
  .raas-band{grid-template-columns:1fr 1fr}
  .contact-grid{gap:32px}
  .f-row{grid-template-columns:1fr}
  .tl{grid-template-columns:80px 44px 1fr}
}
@media(max-width:520px){
  .section{padding:72px 0}
  .hero h1{font-size:31px}
  .sec-head h2{font-size:28px}
  .hero-actions .btn{padding:13px 20px;font-size:14.5px}
  .foot-cols{grid-template-columns:1fr 1fr}
  .raas-band{grid-template-columns:1fr}
  .tl{grid-template-columns:1fr}
  .tl-axis{display:none}
  .tl-time{text-align:left}
  .tl-body{padding-left:0}
  .f-field input,.f-field select,.f-field textarea{font-size:16px}
  .f-field textarea{min-height:88px}
}