@font-face{font-family:Plex;src:url('assets/fonts/IBMPlexSans-Regular.woff2') format('woff2');font-weight:400;font-display:swap}
@font-face{font-family:Plex;src:url('assets/fonts/IBMPlexSans-SemiBold.woff2') format('woff2');font-weight:600;font-display:swap}
:root{font:16px/1.6 Plex,'PingFang SC','Microsoft YaHei',Arial,sans-serif;color:#202429;background:#f4f1e9;--ink:#202429;--paper:#f4f1e9;--accent:#f0a15f;--rule:#d7d3ca}
*{box-sizing:border-box}body{margin:0}h1,h2,h3,p,figure{margin:0}a{color:inherit;text-underline-offset:.25em}a:focus-visible,summary:focus-visible{outline:3px solid #af501b;outline-offset:5px}a:hover{text-decoration-thickness:2px}img{display:block;max-width:100%;height:auto}.wrap{max-width:1320px;margin:auto;padding-inline:48px}.skip{position:absolute;left:20px;top:-100px;background:var(--paper);padding:12px;z-index:20}.skip:focus{top:12px}
header{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:96px;border-bottom:1px solid var(--rule)}.brand{font-size:28px;letter-spacing:.13em;text-decoration:none;font-weight:600}nav{display:flex;gap:30px;align-items:center}nav a{text-decoration:none;font-size:15px}.eyebrow{font-size:14px;font-weight:600;letter-spacing:.06em;margin-bottom:24px}.hero{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;padding-block:64px 68px}h1{font-family:Georgia,'Songti SC','STSong',serif;font-size:clamp(44px,4.5vw,68px);font-weight:400;line-height:1.06;letter-spacing:-.035em;margin-bottom:28px;text-wrap:balance}html[lang=zh-Hans] h1{font-size:clamp(40px,4.2vw,60px);line-height:1.2;letter-spacing:-.045em}h1 span{display:block}.intro{font-size:19px;line-height:1.65;max-width:42ch;color:#4a4d4f;margin-bottom:26px}.button{display:inline-flex;align-items:center;justify-content:center;gap:22px;background:var(--accent);color:var(--ink);font-weight:600;text-decoration:none;padding:15px 22px;min-height:52px;max-width:100%}.button:hover{background:#f6b277}.meta{font-size:14px;color:#51575f;margin-top:20px}.hero figure img{width:100%;aspect-ratio:4/3;object-fit:cover}.hero figcaption{font-size:12px;color:#555b60;margin-top:8px}
.intro-band{background:var(--ink);color:var(--paper);padding-block:24px}.intro-band .wrap{display:flex;flex-wrap:wrap;gap:12px 40px;justify-content:space-between;font-size:15px}.content-section{padding-block:76px;border-bottom:1px solid var(--rule)}.section-head{display:grid;grid-template-columns:1fr 1fr;gap:48px;margin-bottom:40px}h2{font-family:Georgia,'Songti SC','STSong',serif;font-weight:400;font-size:clamp(30px,3vw,42px);line-height:1.18;letter-spacing:-.02em;text-wrap:balance}.section-head p{color:#51575f;max-width:52ch;font-size:18px}.content-rows{list-style:none;margin:0;padding:0}.content-rows li{display:grid;grid-template-columns:56px 1fr 1.1fr;gap:24px;border-top:1px solid var(--rule);padding-block:26px}.num{font-size:14px;color:#736f68;padding-top:5px}h3{font-size:23px;line-height:1.35;font-weight:600}.content-rows p{color:#51575f;max-width:54ch}.process{display:grid;grid-template-columns:1fr 1fr;gap:48px}.process ol{list-style:none;padding:0;margin:0;counter-reset:steps}.process li{counter-increment:steps;padding:0 0 24px 40px;position:relative}.process li::before{content:counter(steps) '.';position:absolute;left:0;top:0;font-weight:600}.process li strong{font-size:18px}.process li p{color:#51575f;margin-top:5px}.scope-note{font-size:14px;color:#51575f;margin-top:28px;max-width:53ch}details{border-top:1px solid var(--rule);margin-top:28px;padding-top:18px;max-width:54ch}summary{cursor:pointer;font-weight:600;min-height:44px}details p{color:#51575f;font-size:15px;margin-bottom:12px}
.contact{background:var(--ink);color:var(--paper);padding-block:66px}.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px}.contact h2{max-width:18ch}.contact p{color:#d8dbde;max-width:51ch;margin-bottom:24px}.contact .email{display:block;width:fit-content;font-size:20px;overflow-wrap:anywhere;margin-top:22px}.contact .small{font-size:13px;margin-top:20px;margin-bottom:0}.contact a:focus-visible{outline-color:var(--accent)}footer{display:flex;justify-content:space-between;gap:24px;padding-block:30px;font-size:13px;color:#51575f}footer p{max-width:70ch}
@media(max-width:860px){.wrap{padding-inline:28px}.hero{gap:30px;grid-template-columns:1fr;padding-block:46px}.hero-copy{max-width:660px}h1{font-size:62px}html[lang=zh-Hans] h1{font-size:52px}.hero figure{max-width:720px}.hero figure img{aspect-ratio:16/10}.section-head,.process,.contact-grid{grid-template-columns:1fr;gap:26px}.content-rows li{grid-template-columns:36px 1fr;gap:16px}.content-rows li p{grid-column:2}.content-section{padding-block:52px}.intro-band .wrap{justify-content:flex-start;gap:10px 24px}.contact h2{max-width:none}}
@media(max-width:520px){.wrap{padding-inline:22px}header{min-height:80px;gap:12px}.brand{font-size:24px}nav{gap:16px}nav a{font-size:13px}.hero{padding-top:38px;gap:28px}h1{font-size:48px}html[lang=zh-Hans] h1{font-size:40px}.eyebrow{font-size:13px;margin-bottom:20px}.intro{font-size:17px}.meta{font-size:12px}.intro-band .wrap{font-size:13px}.section-head p{font-size:17px}.content-rows li{padding-block:22px}h3{font-size:21px}.contact{padding-block:46px}.contact .email{font-size:18px}footer{flex-direction:column;gap:12px}.button{gap:15px}}
@media(max-width:360px){.wrap{padding-inline:16px}.brand{font-size:22px}nav{gap:12px}h1{font-size:42px}html[lang=zh-Hans] h1{font-size:36px}.hero .meta{max-width:26ch}}