:root{--ink:#173e36;--green:#286959;--muted:#64756c;--line:#dce3d9;--paper:#f8f9f3;--serif:"Songti SC","STSong","Noto Serif CJK SC",serif}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:30px}body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}a:hover{color:#34816b}a:focus-visible,summary:focus-visible{outline:3px solid #b38330;outline-offset:6px}p{line-height:1.85}img{display:block;max-width:100%}.wrap{width:min(1160px,calc(100% - 96px));margin-inline:auto}.header{height:104px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{display:flex;gap:12px;align-items:center;font-size:23px;font-weight:650;letter-spacing:2px}.brand img{border-radius:10px}.header nav{display:flex;gap:34px;font-size:13px}.header nav a[aria-current=page]{color:var(--green);text-decoration:underline;text-underline-offset:7px}.skip{position:absolute;top:-100px;left:16px;padding:12px;background:white;z-index:10}.skip:focus{top:12px}.hero{display:grid;grid-template-columns:1fr 1fr;gap:66px;padding-block:64px 76px;align-items:center}.eyebrow{font-size:12px;letter-spacing:2px;font-weight:550;margin:0 0 24px;color:var(--green)}.dot{display:inline-block;width:7px;height:7px;background:#619174;border-radius:50%;margin-right:9px;vertical-align:middle}h1{font-family:var(--serif);font-weight:500;font-size:clamp(48px,5.2vw,72px);line-height:1.35;letter-spacing:3px;margin:0 0 26px}.accent{color:#43836c}.intro{color:var(--muted);font-size:15px;line-height:2.1}.hero-actions{display:flex;align-items:center;gap:22px;margin-top:32px}.button{background:var(--ink);color:white;border-radius:6px;padding:16px 24px;font-size:14px;display:inline-flex;align-items:center;gap:30px;transition:background .2s}.button:hover{background:var(--green);color:white}.platform{font-size:12px;color:var(--muted)}.hero-note{margin-top:58px;display:flex;align-items:center;gap:16px}.hero-note>span{font-size:40px;font-family:var(--serif);color:#789d87}.hero-note p{font-size:12px;margin:0;color:var(--muted)}.hero-note small{font-size:8px;letter-spacing:1.4px}.hero-art{position:relative;height:588px;border-radius:160px 160px 12px 12px}.landscape{width:100%;height:100%;object-fit:cover;object-position:center 43%;border-radius:inherit}.art-caption{position:absolute;top:30px;left:0;right:0;display:flex;justify-content:space-between;padding:0 72px;font-size:10px;letter-spacing:2px;color:#24594f}.floating-note{position:absolute;left:28px;bottom:34px;right:28px;background:#fffffff2;border:1px solid #fff;border-radius:10px;padding:18px 22px;box-shadow:0 10px 35px #153e3610;display:flex;gap:14px;align-items:center}.note-icon{font-size:32px;color:#b48c45}.floating-note strong{font-size:13px;font-weight:600}.floating-note p{font-size:11px;margin:4px 0 0;color:var(--muted);letter-spacing:1px}.note-arrow{margin-left:auto;font-size:22px;color:var(--green)}.section-heading{display:flex;align-items:end;justify-content:space-between;margin-bottom:34px}.section-heading .eyebrow{margin-bottom:12px}h2{font-family:var(--serif);font-size:34px;font-weight:500;letter-spacing:2px;line-height:1.5;margin:0}.section-heading>p{font-size:13px;color:var(--muted);margin:0 0 7px}.feature-section{padding:32px 0 76px;scroll-margin-top:20px}.features{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.feature{padding:28px;background:#edf1e8;border:1px solid #e2e7dc;border-radius:10px;display:flex;align-items:start;flex-direction:column}.feature:nth-child(2){background:#e9f0eb}.feature:nth-child(3){background:#f3f0e5}.feature-number{font-size:10px;color:var(--muted);letter-spacing:1.3px}.feature-icon{font-size:38px;line-height:1;margin:32px 0 23px;color:var(--green)}h3{font-size:19px;font-weight:550;margin:0 0 12px}.feature p{font-size:13px;color:var(--muted);margin:0 0 24px;line-height:2}.feature-tag{font-size:11px;border-top:1px solid #ced8ca;padding-top:17px;width:100%;margin-top:auto;color:#536c5d}.quiet-section{border-block:1px solid var(--line);padding-block:48px;display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}.quiet-section .eyebrow{margin-bottom:15px}.quiet-copy p{font-size:14px;color:var(--muted);line-height:2}.text-link{font-size:13px;display:inline-block;border-bottom:1px solid #a8bcb0;padding-bottom:7px;margin-top:12px}.text-link span{margin-left:20px}.outro{text-align:center;padding-block:55px}.outro>span{font-size:32px;color:#86a18a}.outro p{font-family:var(--serif);font-size:20px;letter-spacing:2px;margin:12px 0}.outro small{font-size:11px;color:var(--muted)}.footer{display:flex;align-items:center;justify-content:space-between;border-top:1px solid var(--line);padding-block:28px}.footer .brand{font-size:16px}.footer-slogan{font-size:10px;font-weight:400;letter-spacing:0;color:var(--muted)}.footer>div{display:flex;gap:22px;font-size:11px;color:var(--muted)}.document-head{padding:65px 0 40px;border-bottom:1px solid var(--line)}.document-head h1{font-size:48px;margin-bottom:15px}.document-head p:last-child{color:var(--muted);font-size:13px}.document-layout{display:grid;grid-template-columns:205px 1fr;gap:65px;padding-block:42px 80px}.toc{position:sticky;top:28px;align-self:start;display:grid;gap:14px;font-size:13px;color:var(--muted)}.toc strong{font-size:11px;letter-spacing:2px;margin-bottom:8px;color:var(--ink)}.prose{max-width:790px;font-size:14px;color:#485d52;line-height:1.9;min-width:0}.prose section{margin-bottom:34px;scroll-margin-top:24px}.prose h2{font-family:inherit;font-size:21px;letter-spacing:0;font-weight:600;margin:0 0 15px;color:var(--ink)}.prose h3{font-size:16px}.prose p{margin:10px 0}.prose a{text-decoration:underline;text-underline-offset:4px;overflow-wrap:anywhere}.prose li{margin-bottom:9px}.notice{padding:18px 22px;background:#f0ead8;border-left:3px solid #a88640;border-radius:0 6px 6px 0;margin-bottom:30px;font-size:13px}.notice strong{color:#725820}.table-scroll{overflow-x:auto}table{width:100%;border-collapse:collapse;font-size:13px}td,th{padding:15px 12px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line);min-width:120px}th{background:#edf1e8;font-weight:550;color:var(--ink)}.help{max-width:800px;margin:0 auto;padding-block:44px 80px}.help h2{font-family:inherit;font-size:23px;margin:0 0 25px}.help details{border-bottom:1px solid var(--line);padding:22px 0}.help summary{font-size:16px;cursor:pointer;line-height:1.6}.help details p{font-size:14px;color:var(--muted);margin-bottom:0}.contact{background:#edf1e8;padding:28px;border-radius:10px;margin-top:40px}.contact h2{margin-bottom:12px}.contact p{font-size:14px;color:var(--muted)}
@media(min-width:1500px){.hero{padding-block:80px}.hero-art{height:640px}}@media(max-width:900px){.wrap{width:calc(100% - 48px)}.hero{gap:30px}.hero-art{height:520px}.art-caption{padding-inline:42px;font-size:9px}.floating-note{left:16px;right:16px;padding:15px}.feature{padding:22px}.footer-slogan{display:none}.document-layout{gap:30px;grid-template-columns:170px 1fr}}@media(max-width:640px){.wrap{width:calc(100% - 40px)}.header{height:82px}.brand{font-size:19px;gap:8px}.brand img{width:31px;height:31px}.header nav{gap:15px;font-size:11px}.header nav a:first-child{display:none}.hero{grid-template-columns:1fr;padding-block:40px 35px;gap:34px}.hero h1{font-size:54px}.hero-copy .eyebrow{font-size:10px}.intro{font-size:14px}.hero-actions{margin-top:25px}.hero-note{display:none}.hero-art{height:460px;border-radius:110px 110px 9px 9px}.art-caption{padding:0 50px}.floating-note{left:16px;bottom:20px}.section-heading{display:block}.section-heading>p{margin-top:14px}.features{grid-template-columns:1fr;gap:16px}.feature{padding:25px}.feature-icon{margin:22px 0 18px}.feature p{margin-bottom:20px}.feature-section{padding-bottom:40px}h2{font-size:29px}.quiet-section{grid-template-columns:1fr;gap:14px;padding-block:35px}.quiet-section h2 br{display:none}.quiet-copy p{font-size:13px}.outro{padding-block:40px}.outro p{font-size:16px;letter-spacing:1px}.outro small{display:block;line-height:1.8}.footer{align-items:start;gap:20px}.footer>div{flex-wrap:wrap;justify-content:flex-end;gap:14px}.footer>div>span{flex-basis:100%;text-align:right}.footer .brand{white-space:nowrap}.document-head{padding-top:40px}.document-head h1{font-size:38px}.document-layout{grid-template-columns:1fr;gap:30px;padding-block:30px 40px}.toc{position:static;grid-template-columns:1fr 1fr;gap:13px;padding-bottom:25px;border-bottom:1px solid var(--line)}.toc strong{grid-column:1/-1}.help{padding-block:30px 50px}.prose{font-size:14px}.contact{padding:22px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}@media print{.header,.footer,.toc,.skip{display:none}.wrap{width:100%}.document-head{padding-top:0}.document-layout{display:block}.prose{max-width:none}body{background:white}a{text-decoration:underline}.notice{border:1px solid #999}h2{break-after:avoid}tr{break-inside:avoid}}