:root{--green:#075a48;--dark:#073e32;--ink:#163d33;--muted:#536b61;--paper:#f2f5ed;--line:#d5e1d4;--gold:#cdb78b}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0;font:18px/1.75 "Microsoft YaHei","PingFang SC",system-ui,sans-serif;background:#fcfdf9;color:var(--ink)}a{color:var(--green);text-underline-offset:5px}button,input,textarea{font:inherit}button{cursor:pointer}img{display:block;max-width:100%}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(38px,4.4vw,64px);line-height:1.3;letter-spacing:-.04em;margin-bottom:24px}h2{font-size:clamp(28px,2.9vw,40px);line-height:1.4;margin-bottom:20px}h3{font-size:24px;line-height:1.5;margin-bottom:14px}p{margin-bottom:18px}button,a{touch-action:manipulation}section{scroll-margin-top:20px}.wrap{width:min(1240px,calc(100% - 72px));margin:auto}.section{padding-top:76px;padding-bottom:76px}.soft{background:var(--paper)}.exp-header{padding:22px 4%;display:flex;align-items:center;justify-content:space-between;gap:24px;border-bottom:1px solid var(--line);background:#fff}.exp-brand{font-size:30px;font-weight:800;text-decoration:none;white-space:nowrap}.exp-brand span{font-size:18px;font-weight:500;margin-left:16px}.exp-header nav{display:flex;gap:26px}.exp-header nav a,.exp-header>a:last-child{text-decoration:none;font-size:18px}.exp-hero{background:linear-gradient(115deg,#edf3e8,#fcfdf9);padding:60px 0}.hero-grid{display:grid;grid-template-columns:1fr 1.1fr;align-items:center;gap:58px}.eyebrow{font-size:18px;font-weight:700;letter-spacing:.11em;color:var(--green);margin-bottom:22px}.hero-lead{font-size:22px;color:#365b4c;text-wrap:balance}.hero-actions{display:flex;flex-wrap:wrap;gap:16px;margin:30px 0 24px}.btn{display:inline-flex;align-items:center;justify-content:center;padding:13px 22px;border:1px solid var(--green);background:var(--green);color:#fff;border-radius:3px;text-decoration:none;font-size:18px;font-weight:650}.btn.outline{background:transparent;color:var(--green)}.btn.light{background:#eef4df;color:var(--dark);border-color:#eef4df}.quiet{font-size:18px;color:var(--muted);line-height:1.8}.hero-preview{border:1px solid #bacfbc;border-radius:7px;overflow:hidden;background:#fff;box-shadow:0 18px 45px #264c3020}.browser-bar{display:flex;gap:6px;align-items:center;background:#f0f3eb;padding:14px 18px}.browser-bar>span{width:9px;height:9px;border-radius:50%;background:#a8bba6}.browser-bar b{font-size:18px;font-weight:500;margin-left:12px;color:#4a6556}.preview-image{position:relative;display:block;border:0;padding:0;width:100%;height:390px;background:#e7efe2;overflow:hidden}.preview-image>img{width:100%;height:100%;object-fit:contain;object-position:center;background:#e7efe2}.preview-image>span{position:absolute;bottom:20px;right:20px;background:#073e32ed;color:#fff;padding:10px 15px;font-size:18px}.hero-preview-links{padding:16px 20px;display:flex;justify-content:space-between;gap:20px}.hero-preview-links button,.text-button{background:none;border:0;color:var(--green);font-size:18px;text-decoration:underline;text-underline-offset:5px;padding:0}.section-top{display:flex;justify-content:space-between;align-items:flex-end;gap:40px;margin-bottom:32px}.section-top>div{max-width:810px}.section-top>.quiet,.section-top>p{max-width:330px;color:var(--muted);font-size:18px}.section-top h2{margin-bottom:0}.video-layout{display:grid;grid-template-columns:1.75fr 1fr;gap:36px;align-items:center}.video-layout video{width:100%;border-radius:4px;background:#092e24;aspect-ratio:8/5}.video-aside{border-left:2px solid var(--gold);padding-left:28px}.video-aside li{padding-bottom:14px}.video-aside ol{padding-left:24px}.detail{border-top:1px solid var(--line);padding:24px 0;margin-top:30px;font-size:18px}.detail summary{cursor:pointer;font-weight:650;font-size:20px}.detail>p,.detail>div{margin-top:20px}.change-list{display:grid;gap:24px}.change-list>article{display:grid;grid-template-columns:50px 1fr 270px;gap:28px;align-items:start;background:#fff;padding:34px;border:1px solid var(--line)}.change-number{font-size:30px;color:#95aa93;font-weight:700}.change-list p{font-size:18px;line-height:1.8}.change-proof{border:1px solid var(--line);padding:18px;display:grid;background:#f8faf3;gap:18px;color:var(--green);font-size:18px;text-align:center;width:100%}.change-proof img{width:100%;height:190px;object-fit:contain}.mobile-proof img{height:280px;object-fit:cover;object-position:top}.handoff-proof{display:grid;gap:8px;justify-items:center;padding:20px;background:#eef4e7;font-size:18px;text-align:center}.handoff-proof>span{background:#fff;border:1px solid var(--line);padding:10px 15px;width:100%}.task-layout{display:grid;grid-template-columns:1.15fr 1fr;gap:36px}.task-card{background:var(--dark);padding:36px;color:#f8faee}.task-card .quiet{color:#cfddca}.tag{display:inline-block;font-size:18px;background:#dfe8d6;color:var(--green);padding:5px 12px;margin-bottom:24px}.task-card h3{font-size:28px}.task-card .btn{background:#eef4df;color:var(--dark);margin:12px 0 24px}.task-record{padding:30px;border:1px solid var(--line)}.task-record label{display:flex;align-items:flex-start;gap:12px;margin:15px 0;font-size:18px}.task-record input{width:22px;height:22px;flex-shrink:0;accent-color:var(--green);margin-top:5px}.task-record .note-label{display:grid;gap:10px;margin:25px 0}.task-record textarea{width:100%;font:18px/1.7 inherit;font-family:inherit;padding:12px;border:1px solid #9eb69f;border-radius:3px;resize:vertical;color:var(--ink)}.small-button{border:1px solid var(--green);background:#fff;color:var(--green);font-size:18px;padding:10px 16px}.material-flow{display:grid;grid-template-columns:1fr 25px 1fr 25px 1fr;align-items:start;gap:22px}.material-flow article{padding:28px;border-top:3px solid #9bb89a;background:#fff;min-height:300px}.material-flow article>span{font-size:18px;color:var(--muted);display:block;margin-bottom:20px}.material-flow>b{font-size:26px;color:#97ab92;padding-top:70px}.material-flow h3{font-size:24px}.material-note{font-size:21px;border-left:3px solid var(--gold);padding-left:20px;margin:34px 0 0}.decision-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px 40px}.decision-grid article{padding:28px 0;border-top:1px solid var(--line)}.decision-grid p{color:var(--muted);font-size:20px}.next-action{padding:30px;background:#edf3e6;display:flex;align-items:center;justify-content:space-between;gap:35px;margin-top:24px}.next-action p{margin:0;max-width:780px}.next-action .btn{flex-shrink:0}.share-section{background:var(--dark);padding:55px 0;color:#f6f8ef}.share-inner{display:grid;grid-template-columns:1fr 1fr;gap:20px 50px}.share-inner h2{font-size:30px}.share-inner p{color:#d2dfcc}.share-buttons{display:flex;align-items:center;flex-wrap:wrap;gap:20px}.share-buttons a{color:#f4f6e9}.exp-footer{padding:40px 5%;font-size:18px;border-top:1px solid var(--line)}.exp-footer p{max-width:1150px;color:var(--muted)}.exp-footer a{margin-right:26px}.skip{position:absolute;top:-100px;left:20px;background:#fff;padding:14px;z-index:20}.skip:focus{top:10px}:focus-visible{outline:3px solid #b78b41;outline-offset:5px}dialog{border:0;border-radius:5px;padding:0;width:min(1320px,95vw);max-height:94vh;color:var(--ink)}dialog::backdrop{background:#092e26bd}dialog>header{position:sticky;top:0;background:#fff;border-bottom:1px solid var(--line);padding:18px 24px;display:flex;justify-content:space-between;align-items:center;gap:20px;z-index:2}dialog h2{font-size:23px;margin:0}dialog header button{background:#fff;border:1px solid var(--green);color:var(--green);padding:10px 18px;font-size:18px}#preview-content iframe{width:100%;height:75vh;display:block;border:0}#preview-content>p{padding:12px 24px;background:var(--paper);font-size:18px;margin:0}#preview-content>img{width:100%}#task-status,#share-status{font-size:18px;min-height:30px;margin-top:14px}
@media(max-width:1000px){.exp-header{flex-wrap:wrap}.exp-header nav{order:3;width:100%;justify-content:space-between}.hero-grid{gap:30px;grid-template-columns:1fr 1fr}.hero-preview-links{flex-direction:column;align-items:flex-start}.video-layout{grid-template-columns:1.5fr 1fr;gap:28px}.change-list>article{grid-template-columns:40px 1fr 210px;padding:25px;gap:18px}.material-flow{gap:12px}.material-flow article{padding:22px}.next-action{display:grid}.next-action .btn{justify-self:start}}@media(max-width:750px){.wrap{width:calc(100% - 40px)}.section{padding-top:46px;padding-bottom:46px}.exp-header{padding:18px 20px;gap:18px}.exp-header nav{gap:16px}.exp-brand{font-size:26px}.exp-brand span{font-size:18px;margin-left:12px}.exp-header>a:last-child{font-size:18px}.exp-hero{padding:36px 0}.hero-grid,.video-layout,.task-layout,.decision-grid,.share-inner{grid-template-columns:1fr}.hero-grid{gap:28px}.hero-lead{font-size:21px}.preview-image{height:270px}.hero-preview-links{flex-direction:row;flex-wrap:wrap;font-size:18px}.browser-bar b{font-size:18px}.section-top{display:block;margin-bottom:25px}.section-top>p{max-width:none;margin:20px 0 0}.video-aside{padding-left:20px}.change-list>article{grid-template-columns:34px 1fr;padding:22px;gap:14px}.change-proof,.handoff-proof{grid-column:2}.change-proof img{height:170px}.mobile-proof img{height:280px;width:200px;justify-self:center}.change-number{font-size:26px}.task-card,.task-record{padding:25px}.material-flow{grid-template-columns:1fr;gap:20px}.material-flow article{min-height:0;padding:25px}.material-flow>b{padding:0;justify-self:center;transform:rotate(90deg)}.material-note{font-size:20px}.next-action{padding:24px}.share-section{padding:42px 0}.share-buttons{display:grid;justify-items:start}.quiet,.detail{font-size:18px}.exp-footer{padding:30px 20px}.exp-footer a{display:inline-block;margin:10px 20px 0 0}dialog>header{flex-direction:column;align-items:flex-start;padding:15px}dialog h2{font-size:22px}#preview-content iframe{height:65vh}.hero-actions{gap:12px}.hero-actions>.btn{padding:12px 16px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}