:root{--paper:#f4f7f2;--ink:#263b32;--muted:#61766a;--sand:#a6baab;--line:#cfdbd1;--accent:#376f59;--white:#ffffff}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:30px}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.65 Arial,Helvetica,sans-serif}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}a,button{touch-action:manipulation}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--accent);outline-offset:5px}.wrap{max-width:1320px;margin:auto;padding:0 60px}.skip{position:absolute;top:-100px}.skip:focus{top:10px;z-index:99;background:white;padding:15px}.topline{font-size:11px;text-transform:uppercase;letter-spacing:1.7px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;padding:12px 0}.header{display:flex;align-items:center;justify-content:space-between;gap:25px;padding:25px 0}.brand{display:flex;align-items:center;gap:12px;line-height:1.2}.brand svg{width:38px;height:38px;color:var(--accent)}.brand strong{display:block;font-size:17px;letter-spacing:1px}.brand small{font-size:10px;letter-spacing:1.2px}.nav{display:flex;gap:24px;align-items:center;font-size:13px}.nav a:hover,.nav a[aria-current=page]{color:var(--accent)}.btn{display:inline-flex;justify-content:center;align-items:center;gap:22px;background:var(--accent);color:white;padding:14px 22px;font-size:13px;letter-spacing:.2px;border:1px solid var(--accent);transition:background .2s;cursor:pointer}.btn:hover{background:#285440}.btn.light{background:transparent;color:var(--ink);border-color:var(--line)}.btn.light:hover{background:#e3efe5}.menu{display:none;background:none;border:1px solid var(--line);padding:8px 15px}.hero{position:relative;overflow:hidden;background:#e2ebe2;border-top:1px solid var(--line);min-height:650px}.hero .wrap{position:relative;z-index:2;min-height:650px;display:flex;align-items:center}.hero-copy{width:59%;padding:65px 0 80px}.eyebrow{text-transform:uppercase;font-size:10px;letter-spacing:2px;font-weight:700;color:var(--accent);display:flex;align-items:center;gap:13px}.eyebrow:before{content:"";height:1px;width:24px;background:currentColor}h1{font-size:clamp(35px,4.6vw,65px);letter-spacing:-2.5px;line-height:1.1;font-weight:400;margin:28px 0}h1 em{font-style:normal;color:var(--accent)}.hero-copy>p{font-size:15px;line-height:1.8;max-width:470px;color:#53695b}.actions{display:flex;gap:12px;flex-wrap:wrap;margin:32px 0}.micro{font-size:11px;color:var(--muted);letter-spacing:.4px}.hero-art{position:absolute;right:0;top:0;width:48%;height:100%;overflow:hidden;mask-image:linear-gradient(to right,transparent,#000 20%)}.hero-art img{width:100%;height:100%;object-fit:cover;object-position:bottom;transform:scale(1.45);transform-origin:bottom right}.orb{position:absolute;right:-170px;top:-300px;width:850px;height:850px;border:1px solid #a7795950;border-radius:50%;pointer-events:none}.orb:after{content:"";position:absolute;width:8px;height:8px;border-radius:50%;background:var(--accent);bottom:90px;left:156px}.facts{display:grid;grid-template-columns:repeat(4,1fr);padding:30px 0;border-bottom:1px solid var(--line)}.fact{border-right:1px solid var(--line);padding:0 26px}.fact:first-child{padding-left:0}.fact:last-child{border:0}.fact strong{font-weight:400;font-size:23px;display:block}.fact span{font-size:11px;color:var(--muted)}section.section{padding:90px 0}.section-head{display:flex;align-items:end;justify-content:space-between;gap:25px;margin-bottom:35px}h2{font-size:35px;line-height:1.2;font-weight:400;letter-spacing:-1px;margin:18px 0}h3{font-size:21px;font-weight:400;line-height:1.3}.text-link{font-size:13px;border-bottom:1px solid var(--accent);padding-bottom:6px}.intro{display:grid;grid-template-columns:1fr 1fr;gap:90px}.intro p{color:var(--muted);margin-top:0}.topics{display:grid;grid-template-columns:repeat(2,1fr);gap:30px}.topic{border-top:1px solid var(--accent);padding:24px 0}.topic .code{color:var(--accent);font-size:12px;letter-spacing:2px}.topic p{font-size:14px;color:var(--muted)}.tint{background:#e9f0e9}.issue-grid{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:100px}.cover-stage{background:#d7e3d8;display:flex;justify-content:center;padding:45px;position:relative}.cover-stage img{display:block;width:235px;max-width:100%;height:auto;aspect-ratio:1055/1493;object-fit:contain;align-self:center;box-shadow:13px 18px 25px #49372233;transform:none}.issue-copy p{color:var(--muted);max-width:460px}.tag{font-size:10px;text-transform:uppercase;letter-spacing:1.8px;color:var(--accent)}.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:30px}.step{border-top:1px solid var(--line);padding-top:20px}.step b{font-size:12px;font-weight:400;color:var(--accent)}.step p{font-size:13px;color:var(--muted)}.cta{background:#b4cfbb;padding:55px;position:relative;overflow:hidden;display:flex;justify-content:space-between;align-items:center;gap:40px}.cta h2{margin-top:0}.cta p{margin-bottom:0}.footer{margin-top:80px;border-top:1px solid var(--line);padding:45px 0 25px}.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:45px}.footer p,.footer a{font-size:12px}.footer p{color:var(--muted)}.foot-links{display:flex;flex-direction:column;gap:8px}.copyright{display:flex;justify-content:space-between;border-top:1px solid var(--line);padding-top:22px;margin-top:35px;font-size:10px;color:var(--muted)}.page-title{padding:55px 0 40px;border-top:1px solid var(--line)}.page-title h1{font-size:48px;max-width:900px}.crumb{font-size:11px;color:var(--muted)}.page-grid{display:grid;grid-template-columns:220px minmax(0,1fr);gap:70px;padding:10px 0 60px}.side{display:flex;flex-direction:column;gap:15px;align-self:start;position:sticky;top:25px;font-size:13px}.side a{border-bottom:1px solid var(--line);padding-bottom:12px}.article{max-width:800px}.article p,.article li{color:#53695b}.article h2{font-size:26px;margin-top:35px}.article p{margin:0 0 17px}.article a:not(.btn){color:var(--accent);text-decoration:underline;overflow-wrap:anywhere}.searchbox{width:100%;padding:16px;border:1px solid var(--line);background:var(--white);margin-bottom:20px}.filters{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:25px}.filters button{border:1px solid var(--line);background:transparent;padding:10px 16px;cursor:pointer;font-size:12px}.filters button[aria-pressed=true]{background:var(--accent);color:white}.editors{display:grid;grid-template-columns:1fr 1fr;gap:24px}.editor{border:1px solid var(--line);padding:25px;background:var(--white)}.editor .initials{font-size:18px;color:var(--accent);width:48px;height:48px;display:grid;place-items:center;background:#efe6dc;border-radius:50%;margin-bottom:20px}.editor h2{font-size:21px;margin:10px 0}.editor p{font-size:12px;margin:8px 0;color:var(--muted)}.editor a:not(.btn){font-size:12px;color:var(--accent);text-decoration:underline}.result-count{font-size:12px;color:var(--muted);margin-bottom:15px}.empty{padding:45px;border:1px solid var(--line);background:#efe8de}.empty h2{margin-top:0}.contact{font-size:24px;color:var(--accent);overflow-wrap:anywhere}.checklist{padding:25px;background:#e9f0e9;margin:25px 0}.checklist li{margin-bottom:9px}details{border-top:1px solid var(--line);padding:20px 0}summary{cursor:pointer;font-weight:600}details p{padding-top:15px}.notice{font-size:12px;color:var(--muted)}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
@media(min-width:1500px){.hero-art{width:44%}.hero-copy{width:60%}}@media(max-width:1000px){.wrap{padding:0 28px}.nav{gap:13px;font-size:11px}.header>.btn{display:none}.hero-copy{width:65%}.hero-art{width:45%;opacity:.7}.intro,.issue-grid{gap:40px}.page-grid{grid-template-columns:170px 1fr;gap:35px}.hero h1{font-size:50px}.fact{padding:0 15px}.fact strong{font-size:20px}}@media(max-width:700px){.wrap{padding:0 22px}.topline{font-size:9px;letter-spacing:.5px}.topline span:first-child{max-width:185px}.header{padding:20px 0;flex-wrap:wrap}.brand strong{font-size:15px}.menu{display:block;min-height:44px}.nav{display:none;width:100%;flex-direction:column;align-items:stretch;font-size:15px}.nav.open{display:flex}.nav a{padding:10px 0}.hero,.hero .wrap{min-height:auto}.hero .wrap{display:block}.hero-copy{width:100%;padding:42px 0 260px}.hero h1{font-size:43px;letter-spacing:-1.8px}.hero-copy>p{font-size:14px}.hero-art{width:100%;height:250px;top:auto;bottom:0;opacity:1;mask-image:linear-gradient(to bottom,transparent,#000 25%)}.hero-art img{transform:none;object-position:bottom;height:auto;position:absolute;bottom:0}.orb{width:500px;height:500px;top:-180px;right:-240px}.facts{grid-template-columns:1fr 1fr;gap:22px}.fact{padding:0!important;border:0}.fact strong{font-size:21px}.section-head{display:block}h2{font-size:30px}section.section{padding:55px 0}.intro,.issue-grid,.topics,.foot-grid,.page-grid{grid-template-columns:1fr;gap:25px}.topics{gap:0}.steps{grid-template-columns:1fr 1fr;gap:22px}.cta{padding:30px;display:block}.cta .btn{margin-top:25px}.footer{margin-top:50px}.copyright{display:block;line-height:2}.page-title h1{font-size:38px;letter-spacing:-1px}.side{position:static;flex-direction:row;flex-wrap:wrap;gap:15px}.side a{padding:0;border:0;font-size:12px}.editors{grid-template-columns:1fr}.cover-stage{padding:35px}.hero .actions{gap:8px}.hero .btn{padding:13px 15px}.page-title{padding:35px 0 20px}.empty{padding:25px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
.languages{display:flex;align-items:center;gap:3px;flex-shrink:0}.languages a{font-size:11px;min-width:31px;min-height:44px;display:grid;place-items:center;padding:4px;color:var(--muted)}.languages a:hover,.languages a[aria-current=true]{color:var(--accent);text-decoration:underline;text-underline-offset:6px}.header{gap:18px}.editor{min-width:0;overflow-wrap:anywhere}html[lang=zh-Hans] body{font-family:Arial,"Microsoft YaHei","PingFang SC",sans-serif}html[lang=zh-Hans] h1,html[lang=zh-Hans] h2{letter-spacing:0;line-height:1.35}html[lang=zh-Hans] .hero h1{font-size:clamp(38px,4.5vw,64px)}html[lang=en] .hero h1{font-size:clamp(36px,4.1vw,59px)}
@media(max-width:1150px) and (min-width:701px){.header>.btn{display:none}.nav{gap:16px}.brand small{font-size:9px}}@media(max-width:700px){.header{gap:10px}.languages{order:2;margin-left:auto}.header .menu{order:3}.header .nav{order:4}.brand{gap:7px}.brand small{font-size:8px;letter-spacing:.5px}.brand svg{width:30px;height:30px}.languages a{font-size:10px;min-width:27px}.menu{padding:8px 10px}.hero-copy .eyebrow{font-size:9px;letter-spacing:1.3px}html[lang=en] .hero h1{font-size:41px}}
/* Mobile layout: prevent intrinsic text widths from expanding grid columns. */
@media(max-width:700px){
 .page-grid>*,.intro>*,.issue-grid>*,.topics>*,.steps>*,.foot-grid>*{min-width:0}
 h1,h2,h3,.article,.step,.cta,.foot-links{overflow-wrap:anywhere}
 .btn{max-width:100%;min-height:44px;text-align:center;white-space:normal}
 .header{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px 12px}
 .header .brand{grid-column:1;grid-row:1}
 .header .menu{grid-column:2;grid-row:1;min-width:72px}
 .header .languages{grid-column:1/-1;grid-row:2;justify-self:end;margin:0}
 .header .languages a{min-width:44px;min-height:44px;font-size:12px}
 .header .nav{grid-column:1/-1;grid-row:3}
 .nav a,.side a,.foot-links a{min-height:44px;display:flex;align-items:center}
 .side{gap:4px 14px}.filters button{min-height:44px}
 input,select,textarea{font-size:16px}
}
@media(max-width:480px){.steps{grid-template-columns:minmax(0,1fr)}.cta{padding:25px}.hero h1{font-size:clamp(34px,10.8vw,43px)}}