/* 源智未来 — 解决方案详情页共享样式（复用官网设计系统 + 详情页组件） */
:root{
  --navy:#0b1f45; --ink:#1c2f57; --body:#4a5a78; --sub:#5b6b86; --faint:#8a98ae;
  --line:#e7edf5; --bg:#f6f8fb; --blue:#1d4ed8; --mid:#2e7fe8; --cyan:#06b6d4;
  --grad:linear-gradient(115deg,#1d4ed8,#2e7fe8 55%,#06b6d4);
}
*{box-sizing:border-box;margin:0;}
html{scroll-behavior:smooth;}
html,body{background:#fff;color:var(--navy);font-family:"Noto Sans SC","Sora",sans-serif;}
.en{font-family:"Sora",sans-serif;}
.wrap{max-width:1200px;margin:0 auto;padding:0 40px;}
a{text-decoration:none;color:inherit;}

/* header */
header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.88);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line);}
.nav{height:72px;display:flex;align-items:center;justify-content:space-between;}
.lockup{display:flex;align-items:center;gap:13px;}
.lockup .zh{font-weight:900;font-size:21px;letter-spacing:.06em;line-height:1;}
.lockup .sub{font-family:"Sora",sans-serif;font-weight:600;font-size:6.5px;letter-spacing:.3em;color:var(--sub);margin-top:5px;text-transform:uppercase;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:36px;font-size:14.5px;font-weight:500;color:var(--ink);}
.nav-links>a,.nav-dd-trigger{position:relative;padding:6px 0;cursor:pointer;}
.nav-links a.active{color:var(--blue);font-weight:700;}
.nav-contact{display:inline-flex;}
.mobile-only{display:none;}
.nav-toggle{display:none;}
.hamburger{display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:4px;background:#fff;}
.hamburger span{display:block;width:16px;height:2px;background:var(--ink);border-radius:2px;}
/* dropdown 解决方案 子菜单 */
.nav-dd{position:relative;}
.nav-dd-menu{position:absolute;top:calc(100% + 14px);left:50%;transform:translateX(-50%) translateY(8px);min-width:236px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:8px;opacity:0;visibility:hidden;transition:.2s;box-shadow:0 18px 50px rgba(11,31,69,.12);}
.nav-dd:hover .nav-dd-menu{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0);}
.nav-dd-menu a{display:block;padding:10px 12px;border-radius:9px;font-size:14px;font-weight:500;color:var(--ink);}
.nav-dd-menu a:hover{background:var(--bg);}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 26px;border-radius:10px;font-size:14.5px;font-weight:700;letter-spacing:.04em;cursor:pointer;border:none;font-family:inherit;}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 6px 18px rgba(29,78,216,.25);}
.btn-ghost{background:#fff;color:var(--blue);border:1.5px solid #c9dcf8;}
.nav .btn{height:40px;padding:0 22px;}

/* solution hero */
.sol-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);
  background:radial-gradient(900px 480px at 88% -20%,rgba(6,182,212,.12),transparent 62%),radial-gradient(760px 460px at -8% 120%,rgba(29,78,216,.08),transparent 60%),var(--bg);}
.sol-hero .wrap{padding-top:72px;padding-bottom:72px;}
.crumb{font-size:12.5px;color:var(--faint);letter-spacing:.04em;margin-bottom:26px;}
.crumb a:hover{color:var(--blue);}
.sol-hero .ic{width:62px;height:62px;border-radius:16px;background:linear-gradient(135deg,rgba(29,78,216,.1),rgba(6,182,212,.12));display:flex;align-items:center;justify-content:center;margin-bottom:24px;}
.sol-hero h1{font-weight:900;font-size:42px;line-height:1.28;letter-spacing:.04em;}
.sol-hero h1 .hl{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;}
.sol-hero .tagline{margin-top:18px;font-size:17px;line-height:1.95;color:var(--body);max-width:42em;text-wrap:pretty;}
.sol-hero .hero-cta{display:flex;gap:14px;margin-top:34px;flex-wrap:wrap;}

/* sections */
section{padding:84px 0;}
.alt{background:var(--bg);}
.sec-head{max-width:620px;margin-bottom:48px;}
.kicker{font-family:"Sora",sans-serif;font-weight:600;font-size:11.5px;letter-spacing:.32em;color:var(--blue);text-transform:uppercase;margin-bottom:14px;}
h2{font-weight:900;font-size:32px;letter-spacing:.05em;line-height:1.35;}
.sec-head p{margin-top:16px;font-size:15.5px;line-height:1.95;color:var(--body);text-wrap:pretty;}
.lead{font-size:16px;line-height:2.05;color:var(--body);max-width:50em;text-wrap:pretty;}
.lead+.lead{margin-top:18px;}

/* capability cards */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:30px 28px;transition:box-shadow .25s,transform .25s,border-color .25s;}
.card:hover{border-color:#c9dcf8;box-shadow:0 18px 40px rgba(11,31,69,.08);transform:translateY(-3px);}
.card .dot{width:38px;height:38px;border-radius:11px;background:linear-gradient(135deg,rgba(29,78,216,.1),rgba(6,182,212,.12));display:flex;align-items:center;justify-content:center;font-family:"Sora",sans-serif;font-weight:700;font-size:14px;color:var(--blue);margin-bottom:18px;}
.card h3{font-weight:700;font-size:17px;letter-spacing:.04em;margin-bottom:10px;}
.card p{font-size:13.5px;line-height:1.9;color:var(--body);}

/* scenarios */
.scenes{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;}
.scene{display:flex;align-items:flex-start;gap:14px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px 22px;}
.scene .mk{flex:0 0 auto;width:8px;height:8px;border-radius:50%;background:var(--grad);margin-top:8px;}
.scene b{font-weight:700;font-size:15px;letter-spacing:.03em;}
.scene span{display:block;margin-top:5px;font-size:13px;line-height:1.85;color:var(--body);}

/* tech tags */
.tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:6px;}
.tag{font-size:13px;font-weight:500;color:var(--ink);background:#fff;border:1px solid var(--line);border-radius:999px;padding:9px 18px;}
.tag.on{background:rgba(29,78,216,.06);border-color:rgba(29,78,216,.18);color:var(--blue);}

/* steps */
.steps{display:grid;grid-template-columns:repeat(6,1fr);gap:14px;}
.step{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px 18px;}
.step .no{font-family:"Sora",sans-serif;font-weight:600;font-size:11px;letter-spacing:.2em;color:var(--cyan);margin-bottom:12px;}
.step b{font-weight:700;font-size:14.5px;letter-spacing:.03em;}
.step span{display:block;margin-top:7px;font-size:12px;line-height:1.75;color:var(--faint);}

/* highlight note */
.note{background:#fff;border:1px solid var(--line);border-left:3px solid var(--blue);border-radius:0 14px 14px 0;padding:22px 26px;margin-top:8px;}
.note b{color:var(--ink);}
.note p{font-size:14px;line-height:1.95;color:var(--body);}
.note a{color:var(--blue);font-weight:600;}

/* cta */
.cta{padding:0 0 84px;}
.cta-inner{background:var(--grad);border-radius:24px;padding:58px 64px;display:flex;align-items:center;justify-content:space-between;gap:40px;color:#fff;box-shadow:0 24px 60px rgba(29,78,216,.28);}
.cta h2{color:#fff;font-size:28px;}
.cta p{margin-top:12px;font-size:14.5px;color:rgba(255,255,255,.85);letter-spacing:.04em;}
.cta .btn{background:#fff;color:var(--blue);flex:0 0 auto;}

/* footer */
footer{background:#081229;color:#9db2d6;padding:60px 0 36px;}
.foot-top{display:flex;justify-content:space-between;gap:60px;padding-bottom:40px;border-bottom:1px solid rgba(125,160,255,.14);}
.foot-brand .zh{color:#fff;font-weight:900;font-size:20px;letter-spacing:.06em;}
.foot-brand .sub{font-family:"Sora",sans-serif;font-size:6.5px;font-weight:600;letter-spacing:.3em;color:#7fa2e8;margin-top:5px;text-transform:uppercase;}
.foot-brand p{margin-top:18px;font-size:13px;line-height:1.9;max-width:21em;}
.foot-cols{display:flex;gap:64px;}
.foot-col .h{color:#fff;font-weight:700;font-size:14px;letter-spacing:.08em;margin-bottom:18px;}
.foot-col a{display:block;font-size:13px;margin-bottom:12px;color:#9db2d6;}
.foot-col a:hover{color:#fff;}
.foot-bottom{padding-top:28px;}
.fb-row{display:flex;justify-content:space-between;font-size:11.5px;letter-spacing:.1em;color:#5e6e92;}
.fb-beian{margin-top:14px;font-size:11.5px;letter-spacing:.04em;color:#5e6e92;line-height:1.9;}
.fb-beian a{color:#9db2d6;}
.fb-beian a:hover{color:#fff;}

/* tablet */
@media (max-width:1024px){
  .cards{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(3,1fr);}
}
/* mobile */
@media (max-width:640px){
  .wrap{padding:0 24px;}
  .nav{height:60px;}
  .lockup img{width:32px!important;height:32px!important;}
  .lockup .zh{font-size:18px;}
  .hamburger{display:flex;}
  .nav-contact{display:none;}
  .mobile-only{display:block;}
  .nav-links{position:fixed;top:60px;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;
    background:#fff;border-bottom:1px solid var(--line);padding:6px 0;max-height:0;overflow:hidden;
    transition:max-height .28s ease;box-shadow:0 18px 40px rgba(11,31,69,.1);}
  .nav-toggle:checked ~ .nav-links{max-height:420px;}
  .nav-links>a,.nav-dd-trigger{padding:14px 24px;font-size:15px;}
  .nav-dd-menu{position:static;transform:none;opacity:1;visibility:visible;min-width:0;background:transparent;border:none;box-shadow:none;padding:2px 24px 8px 40px;}
  .nav-dd-menu a{padding:9px 0;}
  section{padding:52px 0;}
  .sol-hero .wrap{padding-top:48px;padding-bottom:52px;}
  .sol-hero h1{font-size:30px;}
  .sol-hero .tagline{font-size:14.5px;}
  .sol-hero .hero-cta{flex-direction:column;}
  .sol-hero .hero-cta .btn{width:100%;height:48px;}
  h2{font-size:26px;}
  .cards{grid-template-columns:1fr;gap:16px;}
  .scenes{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr 1fr;}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:34px 26px;}
  .cta .btn{width:100%;}
  .foot-top{flex-direction:column;gap:34px;}
  .foot-cols{gap:0;display:grid;grid-template-columns:1fr 1fr;row-gap:28px;}
  .fb-row{flex-direction:column;text-align:center;gap:6px;}
  .fb-beian{text-align:center;}
}