:root{
  --accent:#12A88F; --accent2:#0E8FB0; --accent-soft:#E6F7F3;
  --dark:#1E3A42; --dark-2:#2A4C55; --text-dark:#122024; --muted:#5B6B6E;
  --paper:#FFFFFF; --paper-tint:#F3F9F8; --card-border:#E1EDEB;
}
*{box-sizing:border-box; margin:0; padding:0;}
html{scroll-behavior:smooth;}
body{background:var(--paper); color:var(--text-dark); -webkit-font-smoothing:antialiased;}
h1,h2,h3,h4{font-weight:800; color:var(--text-dark); letter-spacing:-0.01em;}
a{text-decoration:none; color:inherit;}
.mono{font-family:'IBM Plex Mono',monospace;}
.wrap{max-width:1220px; margin:0 auto; padding:0 32px;}
img{max-width:100%; display:block;}
::selection{background:var(--accent); color:#fff;}
.reveal{opacity:0; transform:translateY(16px); transition:opacity .6s ease, transform .6s ease;}
.reveal.in{opacity:1; transform:translateY(0);}
.icon-badge{width:48px; height:48px; border-radius:14px; background:var(--accent-soft); color:var(--accent); display:flex; align-items:center; justify-content:center; margin-bottom:18px; transition:transform .3s ease, background .25s ease, color .25s ease;}

header{position:sticky; top:0; z-index:100; background:rgba(255,255,255,0.92); backdrop-filter:blur(10px); border-bottom:1px solid var(--card-border); transition:box-shadow .3s ease;}
header.scrolled{box-shadow:0 8px 24px -12px rgba(18,32,36,0.15);}
.nav{max-width:1220px; margin:0 auto; padding:0 32px; display:flex; align-items:center; justify-content:space-between; height:76px;}
.logo{display:flex; align-items:center; gap:10px; font-weight:800; font-size:17px;}
.logo img{height:34px; width:auto;}
nav.links{display:flex; gap:30px; align-items:center;}
nav.links a{color:var(--muted); font-size:13.5px; font-weight:500; position:relative; padding-bottom:4px;}
nav.links a::after{content:''; position:absolute; left:0; right:100%; bottom:0; height:1.5px; background:var(--accent); transition:right .25s ease;}
nav.links a:hover::after, nav.links a.active::after{right:0;}
nav.links a:hover, nav.links a.active{color:var(--text-dark);}
.nav-right{display:flex; align-items:center; gap:16px;}
.lang-toggle{display:flex; border:1px solid var(--card-border); border-radius:100px; padding:3px; background:#fff;}
.lang-btn{padding:6px 13px; border-radius:100px; font-size:12px; font-weight:700; font-family:'IBM Plex Mono',monospace; color:var(--muted); cursor:pointer; transition:all .2s ease;}
.lang-btn.active{background:var(--accent); color:#fff;}
.nav-cta{background:var(--accent); color:#fff !important; padding:11px 22px; border-radius:100px; font-size:13px; font-weight:600; transition:transform .2s ease, box-shadow .2s ease; white-space:nowrap;}
.nav-cta:hover{transform:translateY(-2px); box-shadow:0 10px 22px -8px #12A88F88;}
.burger{display:none; flex-direction:column; gap:5px; background:none; border:none; cursor:pointer; padding:6px;}
.burger span{width:22px; height:2px; background:var(--text-dark);}
.mobile-menu{display:none; position:fixed; inset:0; z-index:200; background:#fff; padding:24px 28px; flex-direction:column;}
.mobile-menu.open{display:flex;}
.mobile-menu .mtop{display:flex; justify-content:space-between; align-items:center; margin-bottom:24px;}
.mobile-menu a{font-size:19px; padding:16px 0; border-bottom:1px solid var(--card-border); font-weight:700;}

.hero{position:relative; overflow:hidden; padding:64px 0 40px;}
.blob{position:absolute; border-radius:50%; filter:blur(70px); z-index:0; opacity:0.35; will-change:transform;}
.blob1{width:520px; height:520px; background:var(--accent); top:-200px; right:-140px;}
.blob2{width:420px; height:420px; background:var(--accent2); bottom:-180px; left:-120px;}
.hero-inner{position:relative; z-index:2;}
.pill-badge{display:inline-flex; align-items:center; gap:8px; background:#fff; border:1px solid var(--card-border); border-radius:100px; padding:8px 16px; font-size:12px; font-weight:600; color:var(--accent); box-shadow:0 4px 16px rgba(18,32,36,0.06); margin-bottom:22px;}
.pill-badge .d{width:6px; height:6px; border-radius:50%; background:var(--accent); animation:pulse 1.8s infinite;}
@keyframes pulse{0%,100%{opacity:1;} 50%{opacity:0.35;}}
.hero h1{font-size:clamp(34px,5vw,54px); line-height:1.08; margin-bottom:20px; max-width:680px;}
.btn{display:inline-flex; align-items:center; gap:8px; padding:14px 28px; border-radius:100px; font-size:14.5px; font-weight:600; border:1px solid transparent; transition:transform .2s ease, box-shadow .2s ease, opacity .2s ease; cursor:pointer;}
.btn-primary{background:var(--accent); color:#fff; box-shadow:0 10px 28px -8px #12A88F66;}
.btn-primary:hover{transform:translateY(-2px); box-shadow:0 16px 32px -8px #12A88F88;}
.btn-ghost{border-color:var(--card-border); background:#fff; color:var(--text-dark);}
.btn-ghost:hover{border-color:var(--accent); color:var(--accent); transform:translateY(-2px);}
.btn-row{display:flex; gap:14px; flex-wrap:wrap; margin-top:26px;}
.stat-card{background:#fff; border:1px solid var(--card-border); border-radius:18px; padding:24px 20px; box-shadow:0 10px 30px -14px rgba(18,32,36,0.08); text-align:center;}
.stat-card .num{font-weight:800; font-size:28px;}
.stat-card .num span{color:var(--accent);}
.stat-card .lbl{font-family:'IBM Plex Mono',monospace; font-size:10px; letter-spacing:0.04em; text-transform:uppercase; color:var(--muted); margin-top:6px;}

section{padding:80px 0;}
.section-head{max-width:640px; margin-bottom:44px;}
.section-head .tag{font-size:12px; letter-spacing:0.08em; text-transform:uppercase; color:var(--accent); display:block; margin-bottom:14px; font-weight:700;}
.section-head h2{font-size:clamp(24px,3vw,34px); line-height:1.18;}
.section-head p{margin-top:12px; color:var(--muted); font-size:15px; line-height:1.6;}

.card-grid-3{display:grid; grid-template-columns:repeat(3,1fr); gap:20px;}
.card-grid-2{display:grid; grid-template-columns:repeat(2,1fr); gap:20px;}
.pcard{background:#fff; border:1px solid var(--card-border); border-radius:18px; padding:28px 24px; box-shadow:0 10px 30px -18px rgba(18,32,36,0.10); transition:transform .3s ease, box-shadow .3s ease;}
.pcard:hover{transform:translateY(-6px); box-shadow:0 20px 40px -16px rgba(18,32,36,0.18);}
.pcard:hover .icon-badge{transform:scale(1.1) rotate(-6deg); background:var(--accent); color:#fff;}
.pcard h3, .pcard h4{font-size:17px; margin-bottom:10px; font-family:'Inter',sans-serif; font-weight:700;}
.pcard p{font-size:13.5px; line-height:1.6; color:var(--muted);}

.num-list{display:flex; flex-direction:column; border-top:1px solid var(--card-border);}
.num-row{display:grid; grid-template-columns:60px 1fr 1.3fr; gap:24px; align-items:center; padding:24px 4px; border-bottom:1px solid var(--card-border); transition:background .2s ease;}
.num-row:hover{background:var(--paper-tint);}
.num-row .n{font-family:'IBM Plex Mono',monospace; font-size:13px; color:var(--card-border); font-weight:700; transition:color .2s ease;}
.num-row:hover .n{color:var(--accent);}
.num-row h4{font-size:16px; font-family:'Inter',sans-serif; font-weight:700;}
.num-row p{font-size:13.5px; color:var(--muted); line-height:1.6;}
@media(max-width:760px){.num-row{grid-template-columns:40px 1fr; grid-template-areas:"n h" ". p";} .num-row .n{grid-area:n;} .num-row h4{grid-area:h;} .num-row p{grid-area:p;}}

.industry-chips{display:flex; flex-wrap:wrap; gap:12px;}
.industry-chip{padding:11px 20px; border-radius:100px; font-size:13.5px; font-weight:600; background:var(--accent-soft); color:var(--accent);}

.grad-banner{background:linear-gradient(135deg,var(--dark),var(--dark-2)); border-radius:28px; padding:56px 48px; color:#fff; position:relative; overflow:hidden;}
.grad-banner .section-head .tag{color:var(--accent);}
.grad-banner .section-head h2{color:#fff;}
.grad-banner .section-head p{color:rgba(255,255,255,0.75);}

.honors{display:flex; gap:18px; flex-wrap:wrap;}
.honor{flex:1 1 180px; background:#fff; border:1px solid var(--card-border); padding:18px; border-radius:16px; display:flex; flex-direction:column; gap:12px; box-shadow:0 10px 26px -18px rgba(18,32,36,0.12); transition:transform .3s ease, box-shadow .3s ease;}
.honor:hover{transform:translateY(-6px); box-shadow:0 20px 36px -16px rgba(18,32,36,0.2);}
.honor .badge .ph{font-family:'IBM Plex Mono',monospace; font-size:11px; color:var(--muted); text-align:center; padding:10px;}
.honor .badge::after{content:''; position:absolute; top:0; left:-150%; width:60%; height:100%; background:linear-gradient(115deg, transparent, rgba(255,255,255,0.6), transparent); transform:skewX(-20deg); transition:left .7s ease;}
.honor:hover .badge::after{left:150%;}

footer{background:var(--paper-tint); color:var(--muted); padding:56px 0 28px; border-top:1px solid var(--card-border);}
.footer-top{display:grid; grid-template-columns:1.3fr 1fr 1fr; gap:40px; padding-bottom:36px; border-bottom:1px solid var(--card-border);}
.footer-top .logo{margin-bottom:14px;}
.footer-top p{font-size:13.5px; line-height:1.65; max-width:300px;}
.fcol h5{font-family:'IBM Plex Mono',monospace; font-size:11px; letter-spacing:0.06em; text-transform:uppercase; color:var(--text-dark); margin-bottom:14px;}
.fcol a, .fcol .line{display:block; font-size:13.5px; color:var(--muted); margin-bottom:10px;}
.fcol a:hover{color:var(--accent);}
.foot-bottom{display:flex; justify-content:space-between; padding-top:20px; flex-wrap:wrap; gap:10px;}
.foot-bottom span{font-size:11.5px;}

.back-to-top{position:fixed; bottom:28px; right:28px; width:46px; height:46px; border-radius:50%; background:var(--accent); color:#fff; display:flex; align-items:center; justify-content:center; box-shadow:0 12px 28px -10px #12A88F88; cursor:pointer; z-index:90; opacity:0; visibility:hidden; transform:translateY(10px); transition:opacity .3s ease, transform .3s ease, visibility .3s;}
.back-to-top.show{opacity:1; visibility:visible; transform:translateY(0);}

/* subpage hero */
.page-hero{position:relative; overflow:hidden; padding:64px 0 56px; text-align:center;}
.page-hero .inner{position:relative; z-index:2; max-width:720px; margin:0 auto;}
.page-hero h1{font-size:clamp(30px,4.4vw,44px); line-height:1.12; margin-bottom:16px;}
.page-hero p.lede{font-size:16px; line-height:1.65; color:var(--muted); max-width:600px; margin:0 auto;}

/* tab filters */
.tabbar{display:flex; flex-wrap:wrap; gap:10px; margin-bottom:36px; justify-content:center;}
.tab-pill{font-family:'IBM Plex Mono',monospace; font-size:12px; padding:10px 18px; border:1px solid var(--card-border); border-radius:100px; background:#fff; color:var(--muted); cursor:pointer; transition:all .2s ease; user-select:none;}
.tab-pill:hover{border-color:var(--accent); color:var(--accent);}
.tab-pill.active{background:var(--accent); color:#fff; border-color:var(--accent);}
.filter-item{transition:opacity .25s ease;}
.filter-item.hidden{display:none;}

/* card grids */
.card-grid-3{display:grid; grid-template-columns:repeat(3,1fr); gap:20px;}
.card-grid-2{display:grid; grid-template-columns:repeat(2,1fr); gap:20px;}

/* case cards */
.case-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:20px;}
.case-card{background:#fff; border:1px solid var(--card-border); border-radius:18px; overflow:hidden; box-shadow:0 10px 30px -18px rgba(18,32,36,0.10); transition:transform .3s ease, box-shadow .3s ease;}
.case-card:hover{transform:translateY(-6px); box-shadow:0 20px 40px -16px rgba(18,32,36,0.18);}
.case-thumb span{font-family:'IBM Plex Mono',monospace; font-size:10.5px; color:var(--accent); letter-spacing:0.03em; text-align:center; transition:transform .4s ease;}
.case-body{padding:20px 20px 22px;}
.case-body h4{font-size:15.5px; margin-bottom:10px; font-family:'Inter',sans-serif; font-weight:700;}
.case-body p{font-size:13px; line-height:1.6; color:var(--muted); margin-bottom:14px;}
.case-body .read{font-size:12.5px; font-weight:600; color:var(--accent); display:inline-flex; gap:5px;}

/* timeline */
.timeline{display:grid; grid-template-columns:repeat(4,1fr); position:relative; margin-top:10px;}
.timeline::before{content:''; position:absolute; top:20px; left:0; right:0; height:1px; background:var(--card-border);}
.tl-item{position:relative; padding-top:40px; padding-right:14px;}
.tl-item .dot{position:absolute; top:14px; left:0; width:12px; height:12px; border-radius:50%; background:var(--accent); border:3px solid #fff; box-shadow:0 0 0 1px var(--card-border);}
.tl-item .yr{font-family:'IBM Plex Mono',monospace; font-size:12.5px; color:var(--accent); font-weight:700; margin-bottom:6px;}
.tl-item h5{font-size:13.5px; font-weight:700; margin-bottom:4px; font-family:'Inter',sans-serif;}
.tl-item p{font-size:11.5px; color:var(--muted); line-height:1.45;}
@media(max-width:760px){.timeline{grid-template-columns:repeat(2,1fr); row-gap:28px;}}

/* placeholder-flag for content needing real data */
.needs-data{outline:1.5px dashed #0E8FB0; outline-offset:3px; position:relative;}
.needs-data::before{content:'PLACEHOLDER'; position:absolute; top:-10px; left:8px; background:#0E8FB0; color:#fff; font-family:'IBM Plex Mono',monospace; font-size:8.5px; letter-spacing:0.04em; padding:1px 6px; border-radius:4px;}

/* contact page */
.contact-grid{display:grid; grid-template-columns:1fr 1fr; gap:40px; align-items:start;}
.form-panel{background:#fff; border:1px solid var(--card-border); border-radius:20px; padding:36px; box-shadow:0 14px 40px -22px rgba(18,32,36,0.15);}
.form-row{margin-bottom:18px;}
.form-row label{display:block; font-family:'IBM Plex Mono',monospace; font-size:11px; letter-spacing:0.04em; text-transform:uppercase; color:var(--muted); margin-bottom:8px;}
.form-row input, .form-row textarea{width:100%; padding:12px 14px; border:1px solid var(--card-border); border-radius:10px; font-family:'Inter',sans-serif; font-size:14.5px; color:var(--text-dark); background:var(--paper-tint);}
.form-row input:focus, .form-row textarea:focus{outline:none; border-color:var(--accent); background:#fff;}
.form-row textarea{resize:vertical; min-height:120px;}
.form-two-col{display:grid; grid-template-columns:1fr 1fr; gap:16px;}
.form-note{font-size:12px; color:var(--muted); margin-top:14px; line-height:1.6;}
.form-note a{color:var(--accent); font-weight:600;}
.info-card{background:#fff; border:1px solid var(--card-border); border-radius:16px; padding:22px 24px; margin-bottom:14px; display:flex; gap:16px; align-items:flex-start;}
.info-card h5{font-family:'IBM Plex Mono',monospace; font-size:11px; letter-spacing:0.05em; text-transform:uppercase; color:var(--accent); margin-bottom:6px;}
.info-card p, .info-card a{font-size:14.5px; color:var(--text-dark); line-height:1.6; display:block;}
.map-frame{border-radius:20px; overflow:hidden; border:1px solid var(--card-border); margin-top:20px; box-shadow:0 14px 40px -22px rgba(18,32,36,0.15);}
.map-frame iframe{width:100%; height:320px; border:none; display:block;}

@media(max-width:980px){
  nav.links,.nav-cta{display:none;}
  .burger{display:flex;}
  .card-grid-3,.card-grid-2,.contact-grid{grid-template-columns:1fr;}
  .stat-cards{grid-template-columns:1fr 1fr;}
  .footer-top{grid-template-columns:1fr; gap:28px;}
  .grad-banner{padding:36px 24px;}
  .form-two-col{grid-template-columns:1fr;}
  .nav-right {
    position: absolute;
    top: 20px;
    right: 80px;
  }
}

/* 语言切换防闪屏：仅上次选择英文(en)时，在语言应用完成前隐藏首帧 */
html.lang-en{visibility:hidden;}