:root{color-scheme:dark;--ink:#f3efe1;--muted:#b6c6c9;--line:#aac8cd30;--gold:#e4bd7d;--panel:#0d2634d9;--blue:#8ecbf4;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Hiragino Sans","Noto Sans CJK SC",sans-serif;font-synthesis:none}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#0b1727;color:var(--ink);line-height:1.7}a{color:inherit;text-decoration:none}a:hover{color:var(--gold)}button,select{font:inherit;color:inherit}button{cursor:pointer}button:disabled{cursor:default}a:focus-visible,button:focus-visible,select:focus-visible{outline:2px solid var(--gold);outline-offset:5px}::selection{background:#e4bd7d;color:#14232b}.skip{position:fixed;top:-100px;left:20px;background:var(--ink);color:#102330;padding:8px;z-index:20}.skip:focus{top:10px}.cosmos{position:fixed;inset:0;width:100%;height:100%;z-index:-2;pointer-events:none}.cosmos .orbit{fill:none;stroke:#aad4dc;stroke-opacity:.23;stroke-width:.7}.cosmos .planet-orbit{animation:orbit var(--period) linear infinite;transform-origin:1000px 480px}.cosmos .star{animation:twinkle var(--period) ease-in-out infinite alternate;animation-delay:var(--delay)}@keyframes orbit{to{transform:rotate(360deg)}}@keyframes twinkle{to{opacity:.28}}.shade{position:fixed;inset:0;z-index:-1;pointer-events:none;background:linear-gradient(90deg,#0b1727e6 0%,#0b172745 70%),linear-gradient(0deg,#0b1727 0%,#0b172700 70%)}header,main,footer{width:min(1100px,calc(100% - 80px));margin-inline:auto}header{height:104px;display:flex;align-items:center;gap:28px;border-bottom:1px solid var(--line)}.brand{display:block;flex-shrink:0;color:var(--ink)}.brand .wordmark{width:112px;max-width:none;margin:0}.top-nav{display:flex;gap:28px;margin-left:auto;font-size:14px;white-space:nowrap}.language{border-left:1px solid var(--line);padding-left:22px}.language select{background:#102635;border:1px solid var(--line);border-radius:24px;padding:7px 32px 7px 12px;max-width:156px;font-size:13px}.hero{min-height:480px;padding:94px 0 70px;position:relative}.wordmark{display:block;width:320px;max-width:84%;aspect-ratio:200/94.297;margin-bottom:28px;background:currentColor;-webkit-mask:url("archeon-mark.svg") center/contain no-repeat;mask:url("archeon-mark.svg") center/contain no-repeat}.hero h1{font-weight:500;font-size:clamp(26px,3.5vw,40px);letter-spacing:.035em;line-height:1.35;margin:22px 0 17px}.hero p{max-width:500px;color:var(--muted);font-size:16px;line-height:1.9;margin:0}.eyebrow{font-size:11px;letter-spacing:.22em;color:var(--gold);margin-bottom:14px}.works{display:grid;grid-template-columns:1fr 1fr;gap:22px}.work{position:relative;border:1px solid var(--line);border-radius:26px;overflow:hidden;background:linear-gradient(145deg,#15313edb,#102331ed);padding:28px;min-height:430px;transition:transform .35s ease,background .35s ease}.work:hover{transform:translateY(-4px);background:#153342}.work h2{font-weight:550;font-size:27px;line-height:1.4;margin:16px 0 10px}.work p{font-size:14px;color:var(--muted);max-width:330px}.work .arrow{display:inline-flex;align-items:center;gap:12px;margin-top:15px;color:var(--gold);font-size:14px}.jewel-art{height:auto;aspect-ratio:764/482;width:100%;display:block;object-fit:cover;object-position:center 63%;border-radius:15px;margin-bottom:25px}.sample{margin:0 0 25px;padding:0;width:100%}.snow-card{display:block;width:100%;height:auto;overflow:hidden;filter:drop-shadow(0 12px 22px #0003)}.connect{margin:0 0 32px;padding:28px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);display:flex;gap:25px;align-items:center;justify-content:space-between}.connect h2{font-weight:500;font-size:17px;margin:0;white-space:nowrap}.social{display:flex;flex-wrap:wrap;gap:10px}.pill{border:1px solid var(--line);border-radius:24px;padding:9px 18px;background:#17303b85;font-size:13px;display:inline-flex;align-items:center;gap:10px}.pill:hover{background:#244452}.pill[disabled]{opacity:.45}.dot{width:5px;height:5px;border-radius:50%;background:var(--gold);display:inline-block}.app-hero{display:grid;grid-template-columns:1.2fr 1fr;gap:40px;align-items:center;min-height:520px;padding:70px 0 65px}.app-hero h1{font-size:clamp(42px,6vw,68px);font-weight:500;margin:0 0 16px;line-height:1.12;letter-spacing:-.02em}.app-hero h2{font-size:25px;font-weight:450;max-width:520px;line-height:1.5}.app-hero p{color:var(--muted);max-width:520px;font-size:15px}.status{display:inline-flex;align-items:center;gap:8px;font-size:12px;color:var(--gold);border:1px solid #e4bd7d40;border-radius:24px;padding:8px 15px;margin-top:13px}.app-preview{margin:0;width:100%;min-width:0}.app-preview figcaption{color:var(--muted);font-size:12px;text-align:right;margin-top:12px}.features{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.feature{padding:28px;border-radius:22px;border:1px solid var(--line);background:#102835dc}.feature h2{font-weight:500;font-size:20px;margin:8px 0 12px}.feature p{font-size:14px;color:var(--muted);margin:0}.feature .number{font-size:11px;letter-spacing:.15em;color:var(--gold)}.pricing{margin:28px 0;padding:28px;border:1px solid #e4bd7d40;border-radius:22px;background:#192d38e0}.pricing p{margin:0;font-size:14px;color:var(--muted)}.boundary{font-size:12px;color:var(--muted);max-width:900px;margin:24px 0 44px}.doc-head{padding:65px 0 30px}.doc-head h1{font-size:clamp(32px,4vw,46px);font-weight:500;line-height:1.35;margin:0 0 15px}.date{font-size:13px;color:var(--muted)}.document{max-width:850px;background:#102735ef;border:1px solid var(--line);border-radius:26px;padding:42px;margin:0 0 50px}.document section+section{margin-top:34px;padding-top:28px;border-top:1px solid var(--line)}.document h2{font-size:20px;font-weight:550;line-height:1.5;margin:0 0 13px}.document p{font-size:15px;color:#d0dbdb;margin:0;line-height:1.95;overflow-wrap:anywhere}.document a{color:var(--blue);text-decoration:underline;text-underline-offset:3px}.legal-nav{display:flex;flex-wrap:wrap;gap:10px;margin:25px 0}.legal-nav a{font-size:12px;border:1px solid var(--line);padding:7px 12px;border-radius:18px}.legal-nav [aria-current]{background:#e4bd7d;color:#0b1727;border-color:var(--gold)}footer{padding:24px 0 34px;display:flex;justify-content:space-between;align-items:flex-start;gap:25px;border-top:1px solid var(--line);font-size:11px;color:var(--muted)}.footer-links{display:flex;gap:20px;flex-wrap:wrap;margin:12px 0}.qr-modal{border:1px solid #d8dece45;border-radius:26px;background:#102735;color:var(--ink);width:min(440px,calc(100% - 34px));padding:22px;max-height:90dvh;overflow:auto}.qr-modal::backdrop{background:#030c18b8;backdrop-filter:blur(8px)}.qr-modal h2{font-size:20px;font-weight:500;margin:4px 0 18px}.qr-modal img{display:block;width:100%;height:auto;border-radius:15px;background:#fff}.qr-modal p{font-size:12px;color:var(--muted);line-height:1.7}.qr-close{float:right;width:36px;height:36px;display:grid;place-content:center;border:1px solid var(--line);background:transparent;border-radius:50%;font-size:20px}.reveal{animation:reveal .65s cubic-bezier(.2,.75,.25,1.12) both;animation-delay:var(--delay,0s)}@keyframes reveal{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}
@media(max-width:760px){header,main,footer{width:calc(100% - 40px)}header{height:82px;gap:13px}.brand .wordmark{width:96px}.top-nav{gap:12px;font-size:12px}.top-nav .works-nav{display:none}.language{padding-left:12px}.language select{font-size:12px;max-width:128px;padding:6px 20px 6px 9px}.hero{padding:70px 0 45px;min-height:390px}.wordmark{width:260px}.hero h1{font-size:27px;max-width:290px}.hero p{font-size:14px;max-width:340px}.works{grid-template-columns:1fr;gap:16px}.work{padding:22px;min-height:390px}.jewel-art{height:auto}.sample{height:auto}.connect{display:block;margin:0 0 25px}.connect h2{margin-bottom:18px}.social{gap:8px}.pill{padding:8px 14px;font-size:12px}.app-hero{grid-template-columns:1fr;padding:50px 0;gap:35px}.app-hero h1{font-size:48px}.app-hero h2{font-size:22px}.features{grid-template-columns:1fr;gap:12px}.feature{padding:23px}.doc-head{padding:45px 0 24px}.document{padding:25px 22px;border-radius:22px}.document p{font-size:14px}.document h2{font-size:19px}.legal-nav{gap:7px}.legal-nav a{font-size:11px}footer{display:block;padding-top:20px}footer>div+div{margin-top:15px}.cosmos{width:180%;left:-50%;opacity:.8}.pricing{padding:22px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.cosmos *,.reveal{animation:none!important}.work{transition:none}.work:hover{transform:none}}
@media print{.cosmos,.shade,header,.legal-nav,.qr-modal{display:none}body{background:white;color:black}main,footer{width:100%}.document{background:white;border:0;padding:0;max-width:none}.document p,.date,footer{color:black}.document a{color:#125b91}.doc-head{padding:0}.document section{break-inside:avoid}footer{border-color:#ddd}}

@media(max-width:380px){header{gap:8px}.brand .wordmark{width:80px}.language{padding-left:8px}.language select{width:100px}}

/* Keep the signature on one line on phones; other languages may wrap naturally. */
@media(max-width:760px){html[lang^="zh"] .hero h1{max-width:none;white-space:nowrap;font-size:clamp(18px,6.7vw,27px);letter-spacing:.015em}.language{margin-left:auto}}
footer{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:14px}.footer-links{justify-content:center}footer>div+div{margin-top:0}