:root{--accent:#1890ff;--accent-light:#69c0ff;--ink:#f5f8fc;--muted:rgba(255,255,255,0.55);--line:rgba(255,255,255,0.12);--panel:rgba(255,255,255,0.06);--header-bg:rgba(8,14,20,0.35);--header-bg-scrolled:rgba(8,14,20,0.82);--section-gap:clamp(3rem,6vw,5rem);--content-width:1120px;}*{box-sizing:border-box;}html{scroll-behavior:smooth;}body{margin:0;min-height:100vh;color:var(--ink);font-family:var(--font-maple-mono);line-height:1.6;background:#080e14;}img{display:block;max-width:100%;}a{color:inherit;text-decoration:none;}button{font:inherit;cursor:pointer;background:none;border:none;}.bg-layer{position:fixed;inset:0;z-index:-1;overflow:hidden;pointer-events:none;}.bg-image{position:absolute;inset:0;background:url("https://oss.heleeos.com/img/rain.jpg") center / cover no-repeat;transform:scale(1.06);}.bg-shade{position:absolute;inset:0;background:linear-gradient( 180deg,rgba(8,14,20,0.25) 0%,rgba(8,14,20,0.78) 55%,rgba(8,14,20,0.96) 100% );}.site-header{position:fixed;z-index:20;top:0;left:0;right:0;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:16px clamp(20px,4vw,40px);color:var(--ink);background:var(--header-bg);border-bottom:1px solid var(--line);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);transition:background 180ms ease,box-shadow 180ms ease;}.site-header.scrolled,.site-header.nav-open{background:var(--header-bg-scrolled);box-shadow:0 10px 30px rgba(0,0,0,0.25);}.brand{display:flex;align-items:center;gap:12px;min-width:0;}.brand-mark{display:grid;place-items:center;width:34px;height:34px;border-radius:8px;background:linear-gradient(135deg,var(--accent),var(--accent-light));color:#fff;font-size:0.95rem;font-weight:700;flex-shrink:0;}.brand strong{display:block;font-size:0.95rem;line-height:1.2;}.brand small{display:block;color:var(--muted);font-size:0.68rem;letter-spacing:0.06em;}.site-nav{display:flex;gap:28px;font-size:0.9rem;}.site-nav a{color:rgba(255,255,255,0.72);transition:color 160ms ease;}.site-nav a:hover{color:#fff;}.menu-button{display:none;width:42px;height:42px;padding:0;align-items:center;justify-content:center;flex-direction:column;gap:6px;border:1px solid var(--line);border-radius:10px;background:rgba(255,255,255,0.05);}.menu-button span{display:block;width:18px;height:2px;background:currentColor;border-radius:1px;}main{width:min(var(--content-width),calc(100% - 40px));margin:0 auto;padding:96px 0 var(--section-gap);}.section{padding-top:var(--section-gap);}.eyebrow{margin:0 0 8px;color:var(--accent-light);font-size:0.72rem;letter-spacing:0.16em;}.section-head h2{margin:0;font-size:clamp(1.35rem,2.5vw,1.65rem);font-weight:600;}.hero{text-align:center;padding:clamp(2rem,6vw,4rem) 0 1rem;}.hero-title{margin:0 0 14px;font-size:clamp(2.2rem,6vw,3rem);font-weight:700;letter-spacing:-0.02em;color:#fff;text-shadow:0 0 8px rgba(255,255,255,0.35),0 0 20px rgba(24,144,255,0.5),0 0 40px rgba(24,144,255,0.2);animation:sparkle 2s ease-in-out infinite;}@keyframes sparkle{0%,100%{text-shadow:0 0 8px rgba(255,255,255,0.35),0 0 20px rgba(24,144,255,0.5),0 0 40px rgba(24,144,255,0.2);}50%{text-shadow:0 0 12px rgba(255,255,255,0.65),0 0 28px rgba(24,144,255,0.75),0 0 48px rgba(24,144,255,0.35);}}.hero-copy{max-width:34rem;margin:0 auto 28px;color:rgba(255,255,255,0.72);font-size:clamp(0.95rem,2vw,1.05rem);line-height:1.75;}.hero-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:12px;margin-bottom:40px;}.button{display:inline-flex;align-items:center;justify-content:center;padding:10px 22px;border-radius:999px;font-size:0.9rem;transition:transform 160ms ease,box-shadow 160ms ease,background 160ms ease;}.button:hover{transform:translateY(-1px);}.button.primary{background:rgba(24,144,255,0.9);color:#fff;box-shadow:0 0 24px rgba(24,144,255,0.35);}.button.primary:hover{background:rgba(24,144,255,1);}.button.ghost{border:1px solid rgba(255,255,255,0.28);background:rgba(255,255,255,0.07);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);color:rgba(255,255,255,0.92);}.section-lead{margin:10px 0 0;max-width:36rem;color:var(--muted);font-size:0.9rem;}.service-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:24px;}.service-card{position:relative;display:flex;flex-direction:column;padding:22px 18px 20px;overflow:hidden;}.service-card.glass-card:hover{background:rgba(24,144,255,0.1);border-color:rgba(24,144,255,0.45);}.service-icon{display:grid;place-items:center;width:42px;height:42px;margin-bottom:14px;border-radius:11px;background:rgba(255,255,255,0.08);border:1px solid rgba(255,255,255,0.16);color:#fff;transition:transform 200ms ease,background 200ms ease,border-color 200ms ease;}.service-icon svg{width:22px;height:22px;}.service-card:hover .service-icon{transform:translateY(-2px);background:rgba(255,255,255,0.14);border-color:rgba(255,255,255,0.28);}.service-card h3{margin:0 0 8px;font-size:0.95rem;font-weight:600;color:#fff;}.service-card p{margin:0 0 14px;color:var(--muted);font-size:0.82rem;line-height:1.6;}.service-tags{display:flex;flex-wrap:wrap;gap:6px;margin:auto 0 0;padding:0;list-style:none;}.service-tags li{padding:3px 9px;border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,0.04);color:rgba(255,255,255,0.7);font-size:0.7rem;}.works-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;flex-wrap:wrap;}.filter-bar{display:flex;flex-wrap:wrap;gap:8px;}.filter-button{padding:6px 14px;border:1px solid var(--line);border-radius:999px;color:var(--muted);font-size:0.78rem;transition:background 160ms ease,color 160ms ease,border-color 160ms ease;}.filter-button:hover{color:#fff;border-color:rgba(255,255,255,0.22);}.filter-button.active{background:rgba(24,144,255,0.22);border-color:rgba(24,144,255,0.45);color:var(--accent-light);}.work-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:24px;}.work-card{overflow:hidden;padding:0;}.work-card.is-hidden{display:none;}.work-cover-link{display:block;}.work-cover{display:block;width:100%;height:160px;object-fit:cover;background-size:cover;background-position:center;}.work-cover--soon{display:grid;place-items:center;background-image:linear-gradient(145deg,#141c26 0%,#0c121a 100%);}.soon-plus{font-size:1.9rem;font-weight:300;line-height:1;color:rgba(255,255,255,0.3);}.work-card--soon{border-style:dashed;border-color:rgba(255,255,255,0.16);}.work-card--soon .work-card-body h3{color:rgba(255,255,255,0.7);}.work-card--soon.glass-card:hover{transform:none;background:rgba(255,255,255,0.05);box-shadow:0 4px 12px rgba(0,0,0,0.1);}.work-card-body{padding:16px;}.work-meta{display:inline-block;margin-bottom:6px;color:var(--muted);font-size:0.72rem;}.work-card-body h3{margin:0 0 8px;font-size:0.95rem;font-weight:600;}.work-card-body h3 a:hover{color:var(--accent-light);}.work-card-body p{margin:0 0 12px;color:var(--muted);font-size:0.82rem;line-height:1.55;}.work-tags{display:flex;flex-wrap:wrap;gap:6px;}.work-tags span{padding:2px 8px;border-radius:6px;background:rgba(24,144,255,0.16);color:var(--accent-light);font-size:0.72rem;}.work-tags span:last-child{background:rgba(255,255,255,0.07);color:var(--muted);}.contact-panel{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;padding:28px 32px;border-radius:18px;}.contact-copy h2{margin:0 0 8px;font-size:1.25rem;font-weight:600;}.contact-copy p{margin:0;color:var(--muted);font-size:0.88rem;}.contact-channels{display:flex;align-items:center;gap:24px;flex-wrap:wrap;}.contact-wechat{text-align:center;}.wechat-placeholder{display:grid;place-items:center;width:96px;height:96px;margin-bottom:6px;border:1px solid var(--line);border-radius:10px;background:rgba(255,255,255,0.06);color:rgba(255,255,255,0.35);font-size:0.72rem;}.contact-wechat img{width:96px;height:96px;margin-bottom:6px;border-radius:10px;}.contact-wechat > span{color:var(--muted);font-size:0.75rem;}.contact-email{padding-left:24px;border-left:1px solid var(--line);}.contact-label{display:block;margin-bottom:4px;color:var(--muted);font-size:0.75rem;}.contact-email a{color:rgba(255,255,255,0.82);font-size:0.95rem;}.contact-email a:hover{color:var(--accent-light);}.site-footer{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;width:min(var(--content-width),calc(100% - 40px));margin:0 auto;padding:20px 0 40px;border-top:1px solid rgba(255,255,255,0.06);color:rgba(255,255,255,0.5);font-size:0.78rem;}.footer-beian,.footer-me{display:flex;flex-direction:column;gap:4px;}.footer-me{text-align:right;}.site-footer a{color:inherit;text-decoration:none;}.site-footer a:hover{text-decoration:underline;}@media (max-width:960px){.service-grid{grid-template-columns:repeat(2,1fr);}.work-grid{grid-template-columns:repeat(2,1fr);}}@media (max-width:720px){.menu-button{display:inline-flex;}.site-nav{position:absolute;top:calc(100% + 1px);left:0;right:0;display:none;flex-direction:column;gap:0;padding:12px 20px 16px;background:var(--header-bg-scrolled);border-bottom:1px solid var(--line);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);}.site-nav.open{display:flex;}.site-nav a{padding:10px 0;border-bottom:1px solid rgba(255,255,255,0.06);}.site-nav a:last-child{border-bottom:none;}.service-grid,.work-grid{grid-template-columns:1fr;}.contact-email{padding-left:0;border-left:none;}.site-footer{flex-direction:column;align-items:center;}.footer-beian,.footer-me{align-items:center;text-align:center;}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto;}.hero-title{animation:none;}.button,.glass-card{transition:none;}}