:root { --ink:#0d1c2b; --muted:#65717d; --paper:#f5f6f2; --white:#fff; --line:#dce1dc; --acid:#c9ff3d; --blue:#315bff; }
* { box-sizing:border-box; }
html { scroll-behavior:smooth; }
body { margin:0; background:var(--paper); color:var(--ink); font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif; -webkit-font-smoothing:antialiased; }
a { color:inherit; text-decoration:none; }

.site-header { width:min(100% - 48px,1240px); height:88px; margin:0 auto; display:flex; align-items:center; justify-content:space-between; border-bottom:1px solid rgba(13,28,43,.12); position:relative; z-index:20; }
.brand,.footer-brand { display:flex; align-items:center; gap:13px; }
.brand-mark { width:38px; height:38px; display:grid; place-items:center; background:var(--ink); color:var(--acid); font:800 22px/1 Arial; border-radius:4px 14px 4px 4px; transform:skew(-5deg); }
.brand-mark.inverse { background:var(--acid); color:var(--ink); }
.brand-copy { display:grid; gap:2px; }
.brand-copy strong { font-size:15px; letter-spacing:.08em; }
.brand-copy small { font:600 8px/1.2 Arial; letter-spacing:.16em; color:#78838c; }
.nav-links { display:flex; gap:38px; font-size:14px; color:#354553; }
.nav-links a,.text-link { transition:opacity .2s ease; }
.nav-links a:hover,.text-link:hover { opacity:.55; }

.button { display:inline-flex; align-items:center; justify-content:center; gap:28px; min-height:52px; padding:0 24px; border-radius:3px 18px 3px 3px; background:var(--ink); color:#fff; font-size:14px; font-weight:700; transition:transform .2s ease,background .2s ease; }
.button:hover { transform:translateY(-2px); background:#1b3044; }
.button-small { min-height:42px; padding:0 18px; gap:16px; }

.hero { width:min(100% - 48px,1240px); min-height:720px; margin:0 auto; padding:96px 0 44px; position:relative; overflow:hidden; display:grid; grid-template-columns:1.12fr .88fr; align-items:center; }
.hero::before { content:""; position:absolute; inset:0; background-image:linear-gradient(rgba(13,28,43,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(13,28,43,.04) 1px,transparent 1px); background-size:54px 54px; mask-image:linear-gradient(to bottom,transparent,black 20%,black 75%,transparent); pointer-events:none; }
.hero-copy { position:relative; z-index:2; padding-bottom:40px; }
.eyebrow,.kicker { margin:0 0 26px; font:700 11px/1.2 Arial,sans-serif; letter-spacing:.18em; color:#64717a; }
.status-dot { width:7px; height:7px; display:inline-block; background:var(--blue); border-radius:50%; margin-right:10px; box-shadow:0 0 0 5px rgba(49,91,255,.1); }
h1 { margin:0; font-size:clamp(52px,6.6vw,94px); line-height:.98; letter-spacing:-.07em; font-weight:730; }
h1 span { color:transparent; -webkit-text-stroke:1.5px var(--ink); }
.hero-intro { max-width:610px; margin:36px 0 0; color:#54616c; font-size:17px; line-height:1.9; }
.hero-actions { display:flex; align-items:center; gap:34px; margin-top:38px; }
.text-link { font-size:14px; font-weight:700; border-bottom:1px solid #8f989f; padding:10px 0; }

.hero-visual { height:520px; position:relative; display:grid; place-items:center; }
.hero-visual::before { content:""; position:absolute; width:400px; height:400px; background:radial-gradient(circle,rgba(201,255,61,.45),rgba(201,255,61,0) 68%); }
.orbit { position:absolute; border:1px solid rgba(13,28,43,.22); border-radius:50%; }
.orbit-one { width:390px; height:390px; }
.orbit-two { width:520px; height:240px; transform:rotate(-29deg); border-style:dashed; }
.visual-core { width:252px; height:252px; border-radius:50%; background:var(--ink); color:#fff; display:flex; flex-direction:column; align-items:center; justify-content:center; position:relative; z-index:2; box-shadow:0 30px 80px rgba(13,28,43,.22); }
.core-label { color:var(--acid); font:700 10px Arial; letter-spacing:.26em; margin-bottom:18px; }
.visual-core strong { font-size:54px; letter-spacing:.1em; margin-left:.1em; }
.visual-core small { color:#b7c0c8; margin-top:13px; font-size:11px; letter-spacing:.12em; }
.signal { position:absolute; z-index:3; display:flex; align-items:center; gap:8px; padding:9px 13px; background:rgba(255,255,255,.82); border:1px solid #dce1dc; backdrop-filter:blur(8px); font-size:11px; font-weight:700; letter-spacing:.08em; box-shadow:0 8px 28px rgba(13,28,43,.08); }
.signal i { width:6px; height:6px; border-radius:50%; background:var(--blue); }
.signal-a { top:82px; right:50px; }
.signal-b { bottom:78px; left:22px; }
.signal-c { top:214px; right:-5px; }
.signal-c i { background:var(--acid); box-shadow:0 0 0 2px var(--ink); }
.hero-footnote { position:absolute; bottom:32px; left:0; right:0; display:flex; align-items:center; gap:16px; font:700 8px Arial; letter-spacing:.2em; color:#879098; }
.hero-footnote .line { flex:1; height:1px; background:#d2d7d2; }

.section { width:min(100% - 48px,1240px); margin:0 auto; padding:120px 0; }
.services { border-top:1px solid var(--line); }
.section-heading { display:grid; grid-template-columns:1.4fr .6fr; align-items:end; gap:60px; margin-bottom:62px; }
.section-heading h2,.about-copy h2 { margin:0; font-size:clamp(36px,4.2vw,60px); line-height:1.16; letter-spacing:-.045em; }
.section-heading>p { color:var(--muted); line-height:1.9; font-size:15px; margin:0 0 6px; }
.service-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:14px; }
.service-card { min-height:390px; background:var(--white); padding:30px; position:relative; border:1px solid #e7e9e4; transition:transform .25s ease,box-shadow .25s ease; }
.service-card:hover { transform:translateY(-7px); box-shadow:0 20px 55px rgba(13,28,43,.09); }
.service-number { font:700 10px Arial; color:#8a949a; letter-spacing:.14em; }
.service-icon { width:66px; height:66px; margin:56px 0 32px; background:#efffbe; border-radius:50% 50% 8px 50%; display:grid; place-items:center; }
.service-icon i { width:22px; height:22px; border:2px solid var(--ink); border-radius:50% 50% 3px 50%; position:relative; }
.service-icon i::after { content:""; width:8px; height:2px; background:var(--blue); position:absolute; top:8px; left:5px; }
.service-card h3 { font-size:23px; margin:0 0 17px; letter-spacing:-.02em; }
.service-card p { color:var(--muted); font-size:14px; line-height:1.85; margin:0; }
.tag-list { display:flex; flex-wrap:wrap; gap:8px; margin-top:26px; }
.tag-list span { padding:6px 10px; border:1px solid #dfe4df; color:#65717d; font-size:10px; }

.about { width:100%; padding:0; background:var(--ink); color:#fff; }
.about-panel { width:min(100% - 48px,1240px); margin:0 auto; min-height:670px; display:grid; grid-template-columns:1fr 1fr; }
.about-art { position:relative; overflow:hidden; display:grid; place-items:center; border-right:1px solid rgba(255,255,255,.12); background:linear-gradient(135deg,#102438,#0d1c2b); }
.about-art::before,.about-art::after { content:""; position:absolute; width:420px; height:420px; border-radius:50%; border:1px solid rgba(201,255,61,.24); }
.about-art::after { width:290px; height:290px; border-style:dashed; }
.big-y { position:relative; z-index:2; font:800 230px/1 Arial; letter-spacing:-.12em; color:transparent; -webkit-text-stroke:2px var(--acid); transform:skew(-6deg); }
.mini-label { position:absolute; top:42px; left:42px; color:var(--acid); font:700 9px Arial; letter-spacing:.24em; }
.coordinate { position:absolute; right:35px; bottom:35px; color:#8797a5; font:600 9px/1.7 Arial; letter-spacing:.12em; text-align:right; }
.about-copy { padding:90px 7vw; align-self:center; }
.kicker.light,.about-copy .kicker { color:var(--acid); }
.about-copy>p:not(.kicker) { color:#b5c0c9; font-size:15px; line-height:2; margin:30px 0 0; }
.principles { display:grid; grid-template-columns:repeat(3,1fr); gap:8px; margin-top:42px; }
.principles span { padding-top:14px; border-top:1px solid rgba(255,255,255,.2); font-size:13px; }
.principles b { color:var(--acid); font:600 9px Arial; margin-right:10px; }

.section-heading.compact { margin-bottom:38px; }
.process-list { list-style:none; margin:0; padding:0; border-top:1px solid #bac2bd; }
.process-list li { display:grid; grid-template-columns:90px 1fr 1.2fr 40px; align-items:center; min-height:112px; border-bottom:1px solid #d2d7d2; transition:padding .2s ease,background .2s ease; }
.process-list li:hover { padding:0 18px; background:#fff; }
.step-number { font:700 10px Arial; color:var(--blue); }
.process-list strong { font-size:21px; }
.process-list p { color:var(--muted); font-size:14px; }
.step-arrow { font-size:20px; text-align:right; }

.contact { min-height:620px; padding:110px 24px; background:var(--blue); color:#fff; text-align:center; display:flex; flex-direction:column; align-items:center; justify-content:center; position:relative; overflow:hidden; }
.contact::before { content:"Y"; position:absolute; font:800 500px/1 Arial; color:rgba(255,255,255,.035); top:20px; }
.contact-orbit { position:absolute; width:680px; height:680px; border:1px solid rgba(255,255,255,.13); border-radius:50%; }
.contact h2 { position:relative; margin:0; font-size:clamp(46px,6vw,82px); line-height:1.08; letter-spacing:-.055em; }
.contact-lead { position:relative; max-width:610px; line-height:1.9; color:#d9e0ff; font-size:15px; margin:28px 0 34px; }
.contact-options { position:relative; display:flex; flex-wrap:wrap; justify-content:center; gap:10px; }
.contact-options span { border:1px solid rgba(255,255,255,.35); padding:9px 14px; font-size:11px; letter-spacing:.08em; background:rgba(255,255,255,.06); }

footer { background:#08141f; color:#fff; min-height:210px; padding:55px max(24px,calc((100% - 1240px)/2)); display:flex; justify-content:space-between; align-items:center; }
.footer-brand>div { display:grid; gap:7px; }
.footer-brand strong { font-size:15px; letter-spacing:.06em; }
.footer-brand small { color:#73808c; font:600 8px Arial; letter-spacing:.12em; }
.footer-meta { display:flex; gap:34px; color:#7d8994; font-size:11px; }

@media (max-width:900px) {
  .site-header,.hero,.section { width:min(100% - 32px,1240px); }
  .nav-links { display:none; }
  .hero { min-height:auto; padding:72px 0 38px; grid-template-columns:1fr; }
  .hero-visual { height:430px; }
  .hero-footnote { position:relative; bottom:auto; margin-top:20px; }
  .section { padding:84px 0; }
  .section-heading { grid-template-columns:1fr; gap:28px; }
  .service-grid { grid-template-columns:1fr; }
  .service-card { min-height:auto; }
  .service-icon { margin:34px 0 26px; }
  .about-panel { width:min(100% - 32px,1240px); grid-template-columns:1fr; }
  .about-art { min-height:480px; border-right:0; border-bottom:1px solid rgba(255,255,255,.12); }
  .about-copy { padding:70px 20px; }
  .process-list li { grid-template-columns:60px .8fr 1.2fr 25px; }
  footer { gap:40px; flex-direction:column; align-items:flex-start; }
}

@media (max-width:560px) {
  .site-header { height:76px; }
  .brand-copy small { display:none; }
  .brand-mark { width:34px; height:34px; }
  .button-small { min-height:38px; padding:0 13px; font-size:12px; }
  .hero { padding-top:54px; }
  h1 { font-size:50px; }
  .hero-intro { font-size:15px; }
  .hero-actions { align-items:stretch; flex-direction:column; gap:10px; }
  .text-link { align-self:center; margin-top:5px; }
  .hero-visual { height:360px; transform:scale(.88); margin:-12px -24px; }
  .orbit-one { width:330px; height:330px; }
  .orbit-two { width:410px; }
  .visual-core { width:210px; height:210px; }
  .visual-core strong { font-size:44px; }
  .signal-a { right:6px; }
  .signal-b { left:0; bottom:44px; }
  .signal-c { right:-20px; }
  .section { padding:70px 0; }
  .section-heading h2,.about-copy h2 { font-size:38px; }
  .about-art { min-height:390px; }
  .big-y { font-size:170px; }
  .process-list li { grid-template-columns:40px 1fr 25px; padding:20px 0; }
  .process-list li:hover { padding:20px 10px; }
  .process-list p { grid-column:2/4; margin-bottom:0; }
  .contact { min-height:560px; padding:80px 20px; }
  .contact h2 { font-size:48px; }
  .footer-meta { flex-direction:column; gap:10px; }
}

@media (prefers-reduced-motion:reduce) {
  html { scroll-behavior:auto; }
  *,*::before,*::after { transition-duration:.01ms !important; }
}