:root{color-scheme:dark;--bg:#101011;--text:#ededee;--muted:#a3a3aa;--line:#303034;--panel:#151517}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:32px}body{margin:0;background:var(--bg);color:var(--text);font-family:Arial,'PingFang SC','Microsoft YaHei',sans-serif;font-size:14px;line-height:1.7;-webkit-font-smoothing:antialiased}::selection{background:#dadade;color:#101011}a{color:inherit;text-decoration:none}button,input,textarea{font:inherit}button{cursor:pointer;color:inherit}button,a,input,textarea,summary{-webkit-tap-highlight-color:transparent}button:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid #c5c5cf;outline-offset:5px}button{border:0;background:none}button:hover,a:hover{color:#fff}.wrap{width:min(1120px,88%);margin-inline:auto}.muted{color:var(--muted)}.skip{position:fixed;top:-100px;left:20px;z-index:5;padding:10px;background:#eee;color:#111}.skip:focus{top:10px}.header{width:88%;max-width:1280px;margin:auto;height:116px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:25px}.wordmark{font-size:32px;font-weight:500;line-height:1;letter-spacing:5px}.wordmark span{display:block;font-size:8px;letter-spacing:2px;margin-top:13px}.desktop-nav{display:flex;gap:30px;font-size:12px;color:#bbb}.desktop-nav a:hover,.text-link:hover{color:#fff}.header-actions{display:flex;align-items:center;gap:18px}.outline{border:1px solid #68686f;font-size:11px;padding:10px 22px}.outline:hover{background:#eee;color:#111}.menu-button{display:none}.hero{padding-top:80px;padding-bottom:0}.kicker,.section-label{font-size:10px;font-weight:400;letter-spacing:1.5px;color:#b1b1b8;margin:0 0 25px}.hero h1{font:clamp(44px,5.5vw,78px)/1.1 Georgia,'Times New Roman',serif;letter-spacing:-2.5px;font-weight:400;margin:32px 0 30px}.hero h1 em{font-weight:400;color:#9d9da5}.hero h2{font-family:'Songti SC',STSong,serif;font-size:25px;font-weight:400;letter-spacing:2px;margin:0 0 24px}.hero-description{font-size:13px;color:var(--muted);line-height:2.1}.actions{display:flex;gap:32px;align-items:center;margin:30px 0 60px}.button{display:inline-flex;align-items:center;justify-content:space-between;gap:38px;font-size:12px;min-height:46px;padding:12px 21px;border:1px solid transparent}.primary{background:#e2e2e6;color:#111}.primary:hover{background:#fff;color:#111}.secondary{border:1px solid #65656d}.secondary:hover{background:#232327}.text-link{font-size:12px;color:#bbb;padding:0}.text-link span{margin-left:18px}.hero-bottom{border-top:1px solid var(--line);padding:22px 0;display:flex;justify-content:space-between;color:#97979f;font-size:10px;letter-spacing:1px}.section{padding-top:88px;padding-bottom:88px;border-top:1px solid var(--line);scroll-margin-top:0}.split{display:grid;grid-template-columns:1fr 2fr;gap:70px}.body-column{max-width:660px}h2{font-family:'Songti SC',STSong,serif;font-size:30px;font-weight:400;line-height:1.7;letter-spacing:1px;margin:0 0 26px}.body-column p,.service-intro>p{font-size:13px;line-height:2.25;color:#b6b6bd;margin:0 0 18px}.body-column .quiet-note{font-size:11px;color:#8f8f98;margin-top:25px;max-width:550px}.section-heading{display:flex;justify-content:space-between;align-items:flex-end;gap:35px;margin-bottom:44px}.section-heading h2{margin:0}.section-heading>p{font-size:10px;line-height:2.2;letter-spacing:1px;margin:0 0 8px}.principles{display:grid;grid-template-columns:repeat(3,1fr);gap:40px}.principles article{border-top:1px solid var(--line);padding-top:23px}.number{font-size:11px;color:#8f8f98}.principles h3{font-size:16px;font-weight:400;letter-spacing:1px;margin:28px 0 15px}.principles p{color:var(--muted);font-size:12px;line-height:2.1;max-width:295px;margin:0}.service-panel{background:#131315;border-block:1px solid var(--line)}.service-panel .section{border-top:0}.service-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:100px}.service-intro>p{max-width:350px}.scope{margin:32px 0}.scope h3{font-size:11px;font-weight:400;color:#d4d4d9;margin:0 0 10px}.scope p{color:var(--muted);font-size:12px;line-height:2.2;margin:0}.steps{list-style:none;padding:0;margin:0}.steps li{display:flex;gap:25px;padding:24px 0;border-top:1px solid #3b3b41}.steps li:first-child{padding-top:0;border-top:0}.steps li>span{font:italic 19px Georgia,serif;color:#93939d}.steps h3{font-size:14px;font-weight:400;margin:0 0 10px}.steps p{font-size:12px;color:var(--muted);line-height:2.1;margin:0}.pricing{margin-top:55px;padding-top:25px;border-top:1px solid var(--line)}.pricing>span{display:block;font-size:10px;color:var(--muted);margin-bottom:14px}.pricing strong{font-size:17px;font-weight:400;letter-spacing:1px}.pricing b{font-weight:400;color:#777780;margin:0 14px}.pricing p{font-size:11px;color:var(--muted);line-height:2;margin:16px 0 0}.faq-layout{border-top:0;display:grid;grid-template-columns:1fr 2fr;gap:70px}.faq-list details{border-bottom:1px solid var(--line)}.faq-list details:first-child{border-top:1px solid var(--line)}summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:20px;padding:23px 0;font-size:13px}summary::-webkit-details-marker{display:none}summary span{font-size:18px;color:#9a9aa4;font-weight:400}details[open] summary span{transform:rotate(45deg)}details p{font-size:12px;color:var(--muted);line-height:2.2;margin:0 30px 23px 0}.contact-section{background:#171719;border-top:1px solid var(--line)}.contact-section .section{border-top:0}.contact-layout{display:grid;grid-template-columns:1fr 1fr;gap:100px}.contact-layout>div>p:not(.section-label){font-size:12px;color:var(--muted)}.contact-box{border-left:1px solid #404047;padding-left:45px}.contact-box h3{font-size:16px;font-weight:400;letter-spacing:1px;margin:0 0 18px}.contact-box>p{font-size:12px;line-height:2.1;margin-bottom:25px}.channel-note{font-size:11px!important;line-height:2;color:#92929d;margin:22px 0 0;max-width:340px}.contact-address{margin-top:25px;font-size:13px;word-break:break-word}.contact-address span{display:block;font-size:10px;letter-spacing:1px;color:var(--muted);margin-bottom:6px}footer{display:flex;justify-content:space-between;align-items:center;gap:30px;padding-block:43px}footer .wordmark{font-size:26px}footer .wordmark span{font-size:7px}footer p{font-size:10px;color:#92929b;line-height:2}.footer-links{display:flex;gap:25px;align-items:center;font-size:11px}.footer-links button{font-size:11px}dialog{border:1px solid #43434c;background:#141416;color:var(--text);width:min(550px,92vw);max-height:90dvh;padding:38px;box-shadow:0 30px 100px #000a}dialog::backdrop{background:#000b;backdrop-filter:blur(4px)}dialog h2{font-size:25px;margin-bottom:17px}dialog .section-label{font-size:9px;margin-bottom:20px}dialog p{font-size:12px;color:var(--muted);line-height:2}dialog .close{position:absolute;right:14px;top:9px;font-size:27px;min-width:36px;min-height:36px}.dialog-intro{margin:0 0 22px}label{display:block;font-size:12px;margin:17px 0 8px}label span{font-size:10px;color:#92929b;margin-left:8px}input,textarea{width:100%;display:block;border:1px solid #4b4b54;background:#111113;color:#ededee;border-radius:0;padding:12px;font-size:13px}input::placeholder,textarea::placeholder{color:#85858f}textarea{resize:vertical}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:17px}.full{width:100%;margin-top:24px}.fine-print{font-size:10px!important;margin-bottom:0}.form-error{color:#f4c7c7!important}.result-actions{display:flex;gap:14px;margin-top:20px}.result-actions .button{gap:14px}#copy-status{font-size:11px}.clear-request{float:right;font-size:11px}#privacy-dialog p{line-height:2.2}#mobile-nav[hidden]{display:none}[hidden]{display:none!important}
@media(max-width:900px){.desktop-nav{gap:18px}.split,.faq-layout{gap:35px}.service-grid{gap:50px}.contact-layout{gap:45px}.principles{gap:26px}.header{height:100px}.hero{padding-top:60px}.section{padding-block:65px}}
@media(max-width:700px){.wrap,.header{width:88%}.header{height:92px}.wordmark{font-size:27px;letter-spacing:4px}.wordmark span{font-size:7px;letter-spacing:1.4px}.desktop-nav{display:none}.header-actions>.outline{display:none}.menu-button{display:block;font-size:11px;min-height:44px;padding:5px 0 5px 10px}.menu-button span{font-size:18px;margin-left:10px}#mobile-nav{width:88%;margin:auto;padding:15px 0 25px;border-bottom:1px solid var(--line);display:flex;flex-direction:column;gap:0}#mobile-nav a{padding:12px 0;font-size:13px}.hero{padding-top:49px}.kicker{font-size:8px;letter-spacing:1.3px}.hero h1{font-size:clamp(30px,7.7vw,48px);letter-spacing:-1.2px;margin:28px 0}.hero h2{font-size:20px;letter-spacing:1px;max-width:320px}.hero-description{font-size:11px}.actions{gap:22px;margin-bottom:40px}.button{font-size:11px;gap:20px;padding:12px 17px}.text-link{font-size:11px}.text-link span{margin-left:9px}.hero-bottom{font-size:8px;letter-spacing:.5px;gap:15px;padding-block:19px}.section{padding-block:48px}.split,.faq-layout,.service-grid,.contact-layout{grid-template-columns:1fr;gap:24px}.section-label{font-size:9px;margin-bottom:20px}h2{font-size:26px;line-height:1.65;margin-bottom:23px;letter-spacing:.5px}.body-column p{font-size:12px}.section-heading{display:block;margin-bottom:30px}.section-heading>p{margin:22px 0 0}.principles{grid-template-columns:1fr;gap:26px}.principles article{padding-top:17px;display:grid;grid-template-columns:30px 1fr;gap:0 12px}.principles h3{margin:0 0 12px;font-size:15px}.principles p{grid-column:2;max-width:none;font-size:12px}.principles .number{padding-top:2px}.service-grid{gap:35px}.service-intro>p{font-size:12px;max-width:none}.scope{margin:22px 0}.steps li:first-child{padding-top:24px;border-top:1px solid #3b3b41}.pricing{margin-top:30px}.pricing strong{font-size:13px;letter-spacing:0}.pricing b{margin:0 5px}.pricing p{font-size:10px}.faq-layout{gap:10px}summary{font-size:12px;padding-block:20px}.contact-layout{gap:30px}.contact-box{border-left:0;border-top:1px solid #404047;padding:25px 0 0}.channel-note{max-width:none}footer{flex-wrap:wrap;gap:25px;padding-block:32px}footer .wordmark{font-size:25px}footer p{font-size:9px}.footer-links{width:100%;justify-content:space-between;padding-top:20px;border-top:1px solid var(--line)}dialog{padding:30px 23px}dialog h2{font-size:22px}.form-row{gap:13px}.result-actions{gap:10px}.result-actions .button{flex:1;justify-content:center;padding-inline:10px;font-size:11px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}

.handoff{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:12px 0;margin:15px 0 20px}.handoff strong{font-weight:400;color:var(--text)}.wechat-copy-status:empty{display:none}.handoff .text-link{font-size:11px}.contact-address{color:var(--text)!important}