:root{color:#172033;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:#f3f6fb;font-family:PingFang SC,Microsoft YaHei,Helvetica Neue,Arial,sans-serif}*{box-sizing:border-box}html{min-width:320px;min-height:100%}body{min-width:320px;min-height:100vh;margin:0}a{color:inherit}.portal-shell{background:radial-gradient(circle at 12% 18%,#1c5aa629,#0000 28rem),linear-gradient(145deg,#f6f9fd 0%,#eef3f8 45%,#f9fbfd 100%);min-height:100vh;position:relative;overflow:hidden}.portal-shell:before{z-index:0;pointer-events:none;content:"";background-image:linear-gradient(#294b760f 1px,#0000 1px),linear-gradient(90deg,#294b760f 1px,#0000 1px);background-size:48px 48px;position:absolute;inset:0;-webkit-mask-image:linear-gradient(#000000b3,#0000 72%);mask-image:linear-gradient(#000000b3,#0000 72%)}.hero-section,.platform-section,.portal-footer{z-index:1;width:min(1120px,100% - 40px);margin:0 auto;position:relative}.hero-section{align-items:center;min-height:44vh;padding:72px 0 38px;display:grid}.hero-content{max-width:900px}.eyebrow{color:#1f68b5;letter-spacing:0;margin:0 0 14px;font-size:.78rem;font-weight:700}h1,h2,h3,p{margin-top:0}h1{color:#101828;letter-spacing:0;max-width:900px;margin-bottom:20px;font-size:clamp(2.15rem,5vw,4.75rem);line-height:1.08}.hero-subtitle{color:#43546f;max-width:780px;margin-bottom:34px;font-size:clamp(1rem,2.3vw,1.2rem);line-height:1.8}.stats-panel{-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);background:#ffffffb8;border:1px solid #1a31521a;border-radius:8px;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;width:min(760px,100%);display:grid;overflow:hidden;box-shadow:0 20px 60px #233b5b1f}.stat-item{background:#ffffffc7;flex-direction:column;justify-content:center;min-height:112px;padding:22px 24px;display:flex}.stat-item strong{color:#155ba4;align-items:baseline;gap:6px;font-size:clamp(2rem,4vw,3rem);line-height:1;display:inline-flex}.stat-item small{font-size:.95rem;font-weight:700}.stat-item span{color:#4b5a70;margin-top:10px;font-size:.95rem}.platform-section{padding:24px 0 54px}.section-heading{margin-bottom:22px}.section-heading h2{color:#101828;letter-spacing:0;margin-bottom:0;font-size:clamp(1.55rem,3vw,2.2rem)}.platform-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;display:grid}.platform-card{background:linear-gradient(#fffffff2,#fafcffeb),linear-gradient(135deg,#0f569a14,#0000 62%);border:1px solid #1c3d671a;border-radius:8px;flex-direction:column;justify-content:space-between;min-height:320px;padding:24px;text-decoration:none;transition:transform .18s,border-color .18s,box-shadow .18s;display:flex;position:relative;overflow:hidden;box-shadow:0 14px 40px #1c33521a}.platform-card:after{content:"";border:1px solid #1263b324;border-radius:50%;width:120px;height:120px;position:absolute;bottom:-34px;right:-34px}.platform-card:hover,.platform-card:focus-visible{border-color:#155ba45c;outline:none;transform:translateY(-4px);box-shadow:0 22px 58px #154b822e}.status-badge{color:#177a55;background:#eaf8f1;border:1px solid #18855c2e;border-radius:999px;align-self:flex-start;padding:5px 10px;font-size:.78rem;font-weight:700;line-height:1}.card-icon{color:#fff;background:linear-gradient(135deg,#155ba4 0%,#1d8b9f 100%);border-radius:8px;place-items:center;width:52px;height:52px;margin:24px 0 22px;font-size:.95rem;font-weight:700;display:grid;box-shadow:0 12px 26px #155ba43d}.card-body{z-index:1;position:relative}.scene-label{color:#1f68b5;margin-bottom:10px;font-size:.82rem;font-weight:700}.platform-card h3{color:#111827;letter-spacing:0;margin-bottom:14px;font-size:1.18rem;line-height:1.45}.platform-card p:not(.scene-label){color:#596579;margin-bottom:26px;font-size:.95rem;line-height:1.75}.enter-button{z-index:1;color:#fff;background:#155ba4;border-radius:6px;align-items:center;gap:8px;width:fit-content;padding:10px 14px;font-size:.92rem;font-weight:700;transition:background .18s;display:inline-flex;position:relative}.platform-card:hover .enter-button,.platform-card:focus-visible .enter-button{background:#0f4f91}.portal-footer{color:#637083;border-top:1px solid #223e611f;justify-content:space-between;align-items:center;gap:18px;padding:26px 0 34px;font-size:.92rem;display:flex}.portal-footer span{white-space:nowrap}@media (width<=1040px){.platform-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.platform-card{min-height:280px}}@media (width<=720px){.hero-section,.platform-section,.portal-footer{width:min(100% - 28px,1120px)}.hero-section{min-height:auto;padding:44px 0 26px}.hero-subtitle{margin-bottom:24px}.stats-panel{grid-template-columns:1fr}.stat-item{min-height:88px;padding:18px 20px}.section-heading{margin-bottom:18px;display:block}.platform-section{padding-bottom:38px}.platform-grid{grid-template-columns:1fr;gap:14px}.platform-card{min-height:0;padding:22px}.card-icon{margin:20px 0 18px}.portal-footer{flex-direction:column;align-items:flex-start;padding-bottom:28px}}