:root{
  --brand:#009b8e;
  --brand-dark:#075f67;
  --brand-soft:#e8f6f4;
  --ink:#14242b;
  --muted:#62737c;
  --line:#dce7e8;
  --bg:#ffffff;
  --off:#f5f8f8;
  --card:#ffffff;
  --shadow:0 22px 60px rgba(6,44,48,.13);
  --radius:24px;
  --container:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.68}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,textarea{font:inherit}
.lang,.lang-block{display:none!important}
html[lang="zh-CN"] .lang.zh{display:contents!important}
html[lang="en"] .lang.en{display:contents!important}
html[lang="zh-CN"] .lang-block.zh{display:block!important}
html[lang="en"] .lang-block.en{display:block!important}
.container{width:min(var(--container),calc(100% - 40px));margin-inline:auto}
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.88);backdrop-filter:blur(18px);border-bottom:1px solid rgba(220,231,232,.8)}
.nav-wrap{height:78px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:12px;min-width:270px}
.brand-mark{width:42px;height:42px}
.brand-text{display:flex;flex-direction:column;line-height:1.2}.brand-text strong{font-size:18px;letter-spacing:.02em}.brand-text small{font-size:10px;color:var(--muted);letter-spacing:.08em}
.main-nav{display:flex;align-items:center;gap:26px;font-size:14px;color:#34484f}.main-nav a{position:relative}.main-nav a:after{content:"";position:absolute;left:0;right:0;bottom:-8px;height:2px;background:var(--brand);transform:scaleX(0);transform-origin:left;transition:.25s}.main-nav a:hover:after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:12px}.lang-switch{border:1px solid var(--line);background:#fff;border-radius:999px;padding:8px 14px;cursor:pointer;color:var(--muted);display:flex;gap:5px;align-items:center}.lang-switch .active{font-weight:700;color:var(--brand-dark)}html[lang="en"] .lang-switch .en-btn{font-weight:700;color:var(--brand-dark)}html[lang="en"] .lang-switch .zh-btn{font-weight:400;color:var(--muted)}
.menu-btn{display:none;width:42px;height:42px;border:0;background:var(--brand-soft);border-radius:12px;padding:10px;cursor:pointer}.menu-btn span{display:block;height:2px;background:var(--brand-dark);margin:5px 0;border-radius:99px}
.section{padding:96px 0}.muted{background:var(--off)}.section-dark{background:linear-gradient(135deg,#052f35 0%,#0b6870 52%,#009b8e 100%);color:#fff;position:relative;overflow:hidden}.section-dark:before{content:"";position:absolute;inset:-20% -10%;background:radial-gradient(circle at 15% 20%,rgba(255,255,255,.18),transparent 32%),radial-gradient(circle at 90% 10%,rgba(255,255,255,.12),transparent 30%);pointer-events:none}.section-dark .container{position:relative;z-index:1}.section-dark p,.section-dark .eyebrow{color:rgba(255,255,255,.8)}
.hero{padding:118px 0 92px}.hero-bg{position:absolute;inset:0;background:linear-gradient(rgba(5,47,53,.78),rgba(5,47,53,.8)),url('../assets/img/portal_applications.jpg') center/cover;opacity:.34}.hero-grid{display:grid;grid-template-columns:1.05fr .68fr;gap:56px;align-items:center}.eyebrow{margin:0 0 12px;text-transform:uppercase;letter-spacing:.16em;font-size:13px;font-weight:800;color:var(--brand)}h1,h2,h3{line-height:1.15;margin:0;color:inherit}h1{font-size:clamp(38px,5vw,68px);letter-spacing:-.04em}h2{font-size:clamp(30px,3.6vw,48px);letter-spacing:-.03em}h3{font-size:22px}p{margin:18px 0 0;color:var(--muted)}.hero-lead{max-width:730px;font-size:18px;color:rgba(255,255,255,.86)!important}.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:34px}.btn{display:inline-flex;align-items:center;justify-content:center;border-radius:999px;padding:13px 22px;font-weight:800;transition:.25s;gap:8px}.btn-primary{background:#fff;color:var(--brand-dark);box-shadow:0 12px 32px rgba(0,0,0,.14)}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 40px rgba(0,0,0,.2)}.btn-ghost{border:1px solid rgba(255,255,255,.38);color:#fff}.btn-ghost:hover{background:rgba(255,255,255,.12)}.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:42px;max-width:680px}.hero-stats div{padding:18px;border:1px solid rgba(255,255,255,.2);border-radius:18px;background:rgba(255,255,255,.08);backdrop-filter:blur(8px)}.hero-stats strong{font-size:30px;line-height:1}.hero-stats span{display:block;font-size:12px;color:rgba(255,255,255,.76);margin-top:5px;line-height:1.35}.hero-card{border-radius:32px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.18);box-shadow:0 28px 90px rgba(0,0,0,.22);overflow:hidden;transform:rotate(1.2deg)}.hero-card img{height:520px;width:100%;object-fit:cover;object-position:top}.hero-card-caption{padding:20px 22px;display:grid;gap:4px}.hero-card-caption span{font-size:13px;color:rgba(255,255,255,.76)}
.split-grid{display:grid;grid-template-columns:1fr .9fr;gap:68px;align-items:center}.split-grid.reverse{grid-template-columns:.9fr 1fr}.split-grid.reverse .image-card{order:-1}.quote-box{margin-top:28px;border-left:5px solid var(--brand);background:var(--brand-soft);padding:18px 22px;border-radius:0 18px 18px 0;font-weight:900;color:var(--brand-dark);font-size:22px}.image-stack{position:relative;min-height:520px}.image-stack>img:first-child{border-radius:var(--radius);box-shadow:var(--shadow);height:520px;width:82%;object-fit:cover;object-position:top}.floating-img{position:absolute!important;right:0;bottom:0;width:42%!important;border-radius:18px;box-shadow:0 20px 50px rgba(0,0,0,.18);border:8px solid #fff}.section-head{max-width:780px;margin-bottom:42px}.section-head.center{text-align:center;margin-inline:auto}.section-head p{font-size:17px}
.services-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.service-card{padding:26px;border:1px solid var(--line);border-radius:22px;background:var(--card);box-shadow:0 12px 32px rgba(5,47,53,.05);position:relative;overflow:hidden;transition:.25s}.service-card:before{content:"";position:absolute;inset:0 0 auto;height:4px;background:linear-gradient(90deg,var(--brand),var(--brand-dark));transform:scaleX(0);transform-origin:left;transition:.25s}.service-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}.service-card:hover:before{transform:scaleX(1)}.service-card .num{display:inline-flex;width:38px;height:38px;border-radius:12px;align-items:center;justify-content:center;background:var(--brand-soft);color:var(--brand-dark);font-weight:900;margin-bottom:18px}.service-card p{font-size:14px;margin-top:12px}
.advantage-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}.advantage-item{padding:30px;border-radius:24px;background:linear-gradient(180deg,#fff,#f7fbfb);border:1px solid var(--line);min-height:260px}.advantage-item b{color:var(--brand);font-size:18px}.advantage-item h3{margin-top:20px}.advantage-item p{font-size:15px}.process-section{padding:92px 0}.image-card{border-radius:28px;overflow:hidden;box-shadow:0 24px 70px rgba(0,0,0,.2);border:1px solid rgba(255,255,255,.2)}.image-card img{height:560px;width:100%;object-fit:cover;object-position:top}.timeline{margin-top:30px;display:grid;gap:12px}.timeline div{display:flex;gap:14px;align-items:flex-start;padding:14px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.16);border-radius:16px}.timeline span:first-child{width:38px;height:38px;display:grid;place-items:center;background:#fff;color:var(--brand-dark);font-weight:900;border-radius:12px;flex:0 0 38px}.timeline p{margin:5px 0 0;color:rgba(255,255,255,.86)}
.guide-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}.guide-card{background:#fff;border-radius:26px;padding:34px;border:1px solid var(--line);box-shadow:0 14px 38px rgba(5,47,53,.07)}.guide-card.premium{background:linear-gradient(135deg,#fff,#edf9f7);border-color:rgba(0,155,142,.28)}.guide-card ul{margin:22px 0 0;padding-left:20px;color:var(--muted)}.guide-card li{margin:8px 0}.filter-row{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-bottom:34px}.filter{border:1px solid var(--line);background:#fff;border-radius:999px;padding:9px 16px;cursor:pointer;color:var(--muted);font-weight:700}.filter.active,.filter:hover{background:var(--brand);color:#fff;border-color:var(--brand)}.projects-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.project-card{position:relative;border-radius:24px;overflow:hidden;background:#000;min-height:340px;box-shadow:0 14px 40px rgba(5,47,53,.13);transition:.3s}.project-card[hidden]{display:none}.project-card img{height:100%;width:100%;object-fit:cover;object-position:top;position:absolute;inset:0;opacity:.82;transition:.35s}.project-card:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,.05) 25%,rgba(0,0,0,.78) 100%)}.project-card div{position:absolute;z-index:1;left:22px;right:22px;bottom:20px;color:#fff}.project-card span{font-size:12px;text-transform:uppercase;letter-spacing:.14em;color:rgba(255,255,255,.72)}.project-card h3{font-size:20px;margin-top:8px}.project-card:hover img{transform:scale(1.05);opacity:.95}.cta{padding:98px 0}.cta-grid{display:grid;grid-template-columns:1fr .78fr;gap:48px;align-items:start}.contact-list{display:grid;gap:9px;margin-top:28px}.contact-list a,.contact-list span{padding:12px 14px;border-radius:14px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.16);color:#fff}.contact-card{background:#fff;color:var(--ink);border-radius:28px;padding:30px;box-shadow:0 30px 70px rgba(0,0,0,.22)}.contact-card label{display:block;font-weight:800;margin-top:16px;color:#31454c}.contact-card input,.contact-card textarea{width:100%;margin-top:7px;border:1px solid var(--line);border-radius:14px;padding:12px 14px;outline:0;transition:.2s}.contact-card input:focus,.contact-card textarea:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(0,155,142,.1)}.contact-card .btn{margin-top:18px;background:var(--brand);color:#fff;border:0;width:100%}.site-footer{padding:28px 0;background:#051f24;color:#fff}.footer-grid{display:flex;align-items:center;justify-content:space-between;gap:20px}.footer-grid p{margin:6px 0 0;color:rgba(255,255,255,.65)}.back-top{color:#fff;border:1px solid rgba(255,255,255,.2);border-radius:999px;padding:8px 14px}
.reveal{opacity:0;transform:translateY(18px);transition:.6s ease}.reveal.show{opacity:1;transform:none}
@media (max-width:1050px){.main-nav{position:fixed;left:20px;right:20px;top:88px;display:none;flex-direction:column;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:20px;padding:22px;box-shadow:var(--shadow)}.main-nav.open{display:flex}.menu-btn{display:block}.brand{min-width:auto}.hero-grid,.split-grid,.split-grid.reverse,.cta-grid{grid-template-columns:1fr}.split-grid.reverse .image-card{order:0}.services-grid{grid-template-columns:repeat(2,1fr)}.advantage-grid{grid-template-columns:repeat(2,1fr)}.projects-grid{grid-template-columns:repeat(2,1fr)}.hero-card img{height:430px}.image-stack{min-height:430px}.image-stack>img:first-child{height:430px}.hero-stats{grid-template-columns:repeat(3,1fr)}}
@media (max-width:680px){.container{width:min(100% - 28px,var(--container))}.nav-wrap{height:68px}.brand-text small{display:none}.hero{padding:84px 0 64px}.section{padding:68px 0}.hero-grid{gap:34px}h1{font-size:36px}h2{font-size:30px}.hero-stats,.services-grid,.advantage-grid,.guide-grid,.projects-grid{grid-template-columns:1fr}.hero-actions{flex-direction:column}.btn{width:100%}.hero-card img,.image-card img{height:360px}.image-stack{min-height:380px}.image-stack>img:first-child{width:100%;height:360px}.floating-img{display:none!important}.project-card{min-height:300px}.footer-grid{flex-direction:column;align-items:flex-start}.nav-actions{gap:8px}.lang-switch{padding:7px 10px}}