:root{
  --blue-900:#13294B;
  --blue-800:#1B3A6B;
  --blue-600:#2E6FD8;
  --blue-100:#EEF4FC;
  --gold:#C9A86A;
  --ink:#1F2937;
  --muted:#6B7280;
  --line:#E5EAF2;
  --bg-alt:#F6F9FD;
  --radius:14px;
  --font:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--ink);background:#fff;line-height:1.7;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit}
ul{list-style:none}
img{max-width:100%}
.container{max-width:1120px;margin:0 auto;padding:0 24px}

.nav{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);transition:box-shadow .2s}
.nav.scrolled{box-shadow:0 4px 20px rgba(19,41,75,.06)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:10px}
.brand-mark{width:38px;height:38px;border-radius:10px;background:var(--blue-800);color:#fff;font-weight:500;font-size:19px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.brand-text strong{display:block;font-size:16px;color:var(--blue-900);font-weight:500;letter-spacing:.5px}
.brand-text small{font-size:11px;color:var(--muted);letter-spacing:1px}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-links a{font-size:14px;color:#374151;transition:color .2s}
.nav-links a:hover{color:var(--blue-600)}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px}
.nav-toggle span{width:22px;height:2px;background:var(--blue-900);border-radius:2px;transition:.25s}

.btn{display:inline-block;padding:11px 26px;border-radius:999px;font-size:15px;font-weight:500;transition:.2s;cursor:pointer;border:none;text-align:center}
.btn-primary{background:var(--blue-600);color:#fff}
.btn-primary:hover{background:var(--blue-800)}
.btn-ghost{background:transparent;color:var(--blue-800);border:1.5px solid var(--blue-600)}
.btn-ghost:hover{background:var(--blue-100)}
.btn-sm{padding:8px 18px;font-size:14px}
.btn-block{width:100%}

.hero{padding:160px 0 100px;background:linear-gradient(180deg,var(--blue-100) 0%,#fff 100%);text-align:center}
.hero-slogan{max-width:820px}
.hero-tag{display:inline-block;font-size:13.5px;color:var(--blue-600);background:#fff;border:1px solid #D3E2F7;padding:6px 18px;border-radius:999px;margin-bottom:34px;letter-spacing:1px}
.slogan{display:flex;flex-direction:column;gap:14px;margin-bottom:26px;font-family:"STKaiti","KaiTi","楷体",var(--font);font-weight:400}
.slogan-big{font-size:52px;color:var(--blue-900);letter-spacing:3px;line-height:1.25}
.slogan-big em{font-style:normal;color:var(--blue-600)}
.slogan-mid{font-size:26px;color:#3D5787;letter-spacing:4px;line-height:1.3}
.hero-sub{font-size:15.5px;color:var(--muted);max-width:640px;margin:0 auto 34px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;justify-content:center}

.stats{background:var(--blue-800)}
.process-title{text-align:center;font-size:12px;letter-spacing:3px;color:var(--gold);padding:36px 0 0;font-weight:500}
.process-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;padding:22px 24px 40px}
.proc-step{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);border-radius:14px;padding:24px 18px;text-align:center}
.proc-num{font-size:13px;color:var(--gold);letter-spacing:2px;margin-bottom:12px;font-weight:500}
.proc-step h3{font-size:15.5px;font-weight:500;color:#fff;margin-bottom:8px}
.proc-step p{font-size:12.5px;color:#B9C8E0;line-height:1.6}

.section{padding:84px 0}
.section-alt{background:var(--bg-alt)}
.section-head{text-align:center;margin-bottom:48px}
.section-head.left{text-align:left}
.section-en{font-size:38px;font-weight:500;color:#DCE7F5;letter-spacing:6px;line-height:1.1;margin-bottom:2px;user-select:none}
.section-tag{font-size:27px;color:var(--blue-900);font-weight:500;letter-spacing:2px;margin-bottom:10px}
.section-sub{color:var(--muted);font-size:15px}

.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.cards-3{grid-template-columns:repeat(3,1fr)}
.biz-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.biz-card{text-align:left}
.biz-card h3{text-align:center}
.biz-card .card-icon{margin:0 auto 16px}
.biz-list{margin-top:12px}
.biz-list li{font-size:13.5px;color:var(--muted);padding:7px 0;border-bottom:1px dashed var(--line)}
.biz-list li:last-child{border-bottom:none}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;transition:.25s}
.card:hover{transform:translateY(-4px);box-shadow:0 16px 36px rgba(19,41,75,.08);border-color:#C9DAF2}
.card-icon{width:46px;height:46px;border-radius:12px;background:var(--blue-100);color:var(--blue-600);font-size:19px;display:flex;align-items:center;justify-content:center;margin-bottom:16px;font-weight:500}
.card h3{font-size:17px;font-weight:500;color:var(--blue-900);margin-bottom:10px}
.card p{font-size:14px;color:var(--muted)}

.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card time{display:inline-block;font-size:12.5px;color:var(--blue-600);background:var(--blue-100);border-radius:999px;padding:3px 12px;margin-bottom:14px}
.news-card h3{font-size:16.5px;line-height:1.5;margin-bottom:10px}
.news-card p{font-size:13.5px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:14px}
.news-more{font-size:13.5px;color:var(--blue-600)}

.scope-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.scope-col{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.scope-col h3{font-size:16px;font-weight:500;color:var(--blue-900);padding-bottom:12px;margin-bottom:8px;border-bottom:2px solid var(--blue-100)}
.scope-col ul li{font-size:13.5px;color:#4B5563;padding:7px 0;border-bottom:1px dashed var(--line)}
.scope-col ul li:last-child{border-bottom:none}

.about-inner{max-width:860px}
.about-text p{font-size:15px;color:#374151;margin-bottom:16px}
.about-list{margin:8px 0 28px}
.about-list li{font-size:14.5px;color:var(--blue-900);padding:9px 0 9px 30px;position:relative;border-bottom:1px dashed var(--line)}
.about-list li:last-child{border-bottom:none}
.about-list li::before{content:"✓";position:absolute;left:0;color:var(--gold);font-weight:500}
.about-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px}
.about-card h3{font-size:18px;font-weight:500;color:var(--blue-900);margin-bottom:20px;padding-bottom:14px;border-bottom:2px solid var(--blue-100)}
.about-card dl{display:grid;gap:14px}
.about-card dt{font-size:12.5px;color:var(--muted)}
.about-card dd{font-size:15px;color:var(--blue-900);font-weight:500}

.feats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.feats-3{grid-template-columns:repeat(3,1fr)}
.feat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.feat-num{font-size:13px;color:var(--gold);letter-spacing:2px;margin-bottom:12px;font-weight:500}
.feat-icon{width:46px;height:46px;border-radius:12px;background:var(--blue-100);color:var(--blue-600);font-size:19px;display:flex;align-items:center;justify-content:center;margin-bottom:16px;font-weight:500}
.feat h3{font-size:16px;font-weight:500;color:var(--blue-900);margin-bottom:8px}
.feat p{font-size:13.5px;color:var(--muted)}

.contact-inner{display:grid;grid-template-columns:1fr 1fr;gap:48px}
.contact-list{display:grid;gap:18px;margin-top:8px}
.contact-list li{display:grid;gap:4px;padding-left:20px;border-left:3px solid var(--blue-100)}
.contact-list span:first-child{font-size:12.5px;color:var(--muted)}
.contact-list a,.contact-list span:last-child{font-size:16px;color:var(--blue-900);font-weight:500}
.contact-form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px;box-shadow:0 10px 30px rgba(19,41,75,.05)}
.contact-form h3{font-size:19px;font-weight:500;color:var(--blue-900);margin-bottom:8px}
.form-intro{font-size:13.5px;color:var(--muted);line-height:1.7;padding-bottom:14px;border-bottom:1px dashed var(--line)}
.contact-form label{display:block;font-size:13px;color:var(--muted);margin:14px 0 6px}
.contact-form input,.contact-form textarea{width:100%;border:1px solid var(--line);border-radius:10px;padding:12px 14px;font-size:14.5px;font-family:var(--font);color:var(--ink);transition:border .2s;background:#FBFCFE}
.contact-form input:focus,.contact-form textarea:focus{outline:none;border-color:var(--blue-600);background:#fff}
.form-tip{font-size:12px;color:#9CA3AF;margin-top:12px}

.footer{background:var(--blue-900);color:#B9C8E0;padding:40px 0}
.footer-inner{display:flex;flex-direction:column;gap:16px}
.footer-brand{display:flex;align-items:center;gap:12px}
.footer-brand .brand-mark{background:rgba(255,255,255,.12)}
.footer-name{font-size:15px;color:#fff;font-weight:500}
.footer-en{font-size:11px;letter-spacing:1px;color:#7E93B5;margin-top:2px}
.footer-copy{font-size:12.5px;color:#7E93B5}
.footer-copy a{color:inherit;text-decoration:none;transition:color .2s}
.footer-copy a:hover{color:#fff;text-decoration:underline}

.toast{position:fixed;bottom:30px;left:50%;transform:translateX(-50%) translateY(80px);background:var(--blue-800);color:#fff;padding:12px 22px;border-radius:16px;font-size:14px;line-height:1.6;max-width:86vw;white-space:normal;text-align:center;opacity:0;transition:.35s;z-index:200;box-shadow:0 10px 30px rgba(19,41,75,.25);pointer-events:none}
.toast.show{transform:translateX(-50%) translateY(0);opacity:1}
.form-tip a{color:var(--blue-600);text-decoration:underline;word-break:break-all}

@media(max-width:920px){
  .cards,.cards-3{grid-template-columns:1fr 1fr}
  .biz-cards,.scope-grid{grid-template-columns:1fr 1fr}
  .news-grid{grid-template-columns:1fr}
  .feats{grid-template-columns:1fr 1fr}
  .feats-3{grid-template-columns:1fr}
  .contact-inner{grid-template-columns:1fr}
  .hero{padding:130px 0 70px}
  .slogan-big{font-size:38px}
  .slogan-mid{font-size:20px}
  .section-en{font-size:26px}
  .section-tag{font-size:22px}
  .nav-toggle{display:flex}
  .nav-links{position:fixed;top:68px;left:0;right:0;background:#fff;flex-direction:column;padding:20px 24px 28px;gap:18px;border-bottom:1px solid var(--line);transform:translateY(-120%);transition:.3s;box-shadow:0 20px 30px rgba(19,41,75,.06)}
  .nav-links.open{transform:translateY(0)}
}
@media(max-width:560px){
  .cards,.cards-3,.feats,.biz-cards,.scope-grid{grid-template-columns:1fr}
  .stats-grid,.process-grid{grid-template-columns:repeat(2,1fr);gap:16px 12px}
  .slogan-big{font-size:30px}
  .slogan-mid{font-size:17px}
}