:root{--ink:#202927;--green:#276b55;--sage:#7e9e8c;--red:#c85643;--paper:#f4f2ea;--white:#fff;--muted:#66736f;--line:#c8ccc3;--dark:#1d302a}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--paper);font-family:"Microsoft YaHei","PingFang SC",sans-serif;line-height:1.72}a{color:inherit;text-decoration:none}img{display:block;max-width:100%}.wrap{width:min(1180px,calc(100% - 46px));margin:auto}.skip{position:fixed;z-index:99;top:5px;left:5px;padding:8px 13px;color:#fff;background:var(--green);transform:translateY(-150%)}.skip:focus{transform:none}
.header{position:sticky;z-index:50;top:0;background:rgba(244,242,234,.92);border-bottom:1px solid var(--ink);backdrop-filter:blur(14px)}.nav{min-height:74px;display:flex;align-items:center;gap:27px}.brand{display:flex;align-items:center;gap:10px;font-family:Georgia,"Songti SC",serif;font-weight:800}.logo{width:38px;height:38px;display:grid;place-items:center;color:#fff;background:var(--green)}.links{margin-left:auto;display:flex;gap:23px;color:#5c6865;font-size:10px}.links a:hover,.links a[aria-current=page]{color:var(--red)}.lang{color:#929b96;font-size:9px}.btn{display:inline-flex;min-height:42px;align-items:center;justify-content:center;padding:9px 18px;color:#fff;background:var(--green);border:1px solid var(--green);font-size:10px;font-weight:900;white-space:nowrap;word-break:keep-all;writing-mode:horizontal-tb}.btn:hover{background:var(--red);border-color:var(--red)}.btn-ghost{color:var(--green);background:transparent}.menu{display:none;margin-left:auto;width:42px;height:42px;color:var(--green);background:transparent;border:1px solid var(--ink)}
.hero{border-bottom:1px solid var(--ink)}.report-meta{padding:20px 0;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;color:#718079;font:9px Consolas,monospace;letter-spacing:.08em}.hero-grid{min-height:740px;display:grid;grid-template-columns:1fr 430px;gap:80px;align-items:center;padding:55px 0 80px}.eyebrow{color:var(--red);font:900 9px Consolas,monospace;letter-spacing:.16em}.hero h1,.page-hero h1{margin:20px 0;font-family:Georgia,"Songti SC",serif;font-size:clamp(52px,7vw,85px);font-weight:500;line-height:1.02;letter-spacing:-.045em}.hero h1 span{display:block;color:var(--green);font-style:italic}.lead{max-width:620px;color:#56645f}.actions{display:flex;flex-wrap:wrap;gap:9px;margin-top:29px}.abstract{margin-top:50px;padding:18px 0;border-top:1px solid var(--ink);border-bottom:1px solid var(--ink);display:grid;grid-template-columns:100px 1fr;gap:22px;font-size:11px}.abstract b{font-family:Georgia,serif}.phone-figure{padding:18px;background:#fff;border:1px solid var(--ink)}.phone-figure img{width:100%;height:480px;object-fit:contain;filter:saturate(.75)}.phone-figure figcaption{padding-top:12px;color:#65726d;font:9px Consolas,monospace;border-top:1px solid var(--line)}.trust{background:#fff;border-bottom:1px solid var(--ink)}.trust-row{display:grid;grid-template-columns:repeat(3,1fr)}.trust-row span{padding:22px;color:#68756f;font-size:10px}.trust-row span+span{border-left:1px solid var(--line)}.trust-row b{display:block;color:var(--green);font-family:Georgia,"Songti SC",serif;font-size:14px}
.section{padding:100px 0;border-bottom:1px solid var(--line)}.section-white{background:#fff}.section-dark{color:#eef4f0;background:var(--dark)}.head{display:grid;grid-template-columns:150px 1fr;gap:45px;margin-bottom:50px}.head h2{margin:0;font-family:Georgia,"Songti SC",serif;font-size:clamp(38px,5vw,55px);font-weight:500;line-height:1.07}.head p{grid-column:2;margin:0;max-width:720px;color:var(--muted)}.section-dark .head p{color:#9cb0a7}
.metrics{display:grid;grid-template-columns:repeat(4,1fr);border-top:2px solid var(--ink);border-bottom:1px solid var(--ink)}.metric{padding:28px 20px}.metric+.metric{border-left:1px solid var(--line)}.metric strong{display:block;color:var(--green);font-family:Georgia,serif;font-size:34px;font-weight:500}.metric span{color:#7a8681;font-size:10px}.fine{color:#8a948f;font-size:9px}
.methods{display:grid;grid-template-columns:360px 1fr;gap:70px}.method-figure{position:sticky;top:105px;height:570px;padding:18px;background:#f0f2ed;border:1px solid var(--ink)}.method-figure img{width:100%;height:100%;object-fit:contain}.findings{counter-reset:finding}.finding{counter-increment:finding;padding:35px 0;border-top:1px solid var(--ink);display:grid;grid-template-columns:70px 1fr;gap:22px}.finding:before{content:"F." counter(finding);color:var(--red);font:900 10px Consolas,monospace}.finding h3{margin:0 0 8px;font-family:Georgia,"Songti SC",serif;font-size:27px;font-weight:500}.finding p{margin:0;color:var(--muted)}
.routes{display:grid;grid-template-columns:1fr 370px;gap:28px}.map{height:510px;padding:20px;background:#243c34;border:1px solid #6e8e81}.map img{width:100%;height:100%;object-fit:contain;opacity:.55;filter:hue-rotate(70deg) saturate(.55)}.nodes{display:grid;border-top:1px solid #6e8e81}.node{display:grid;grid-template-columns:1fr 70px 70px;align-items:center;padding:18px 0;border-bottom:1px solid #5a776d}.node small{color:#8fa399;font-size:9px}.node b{color:#c5dfd2;font-family:Consolas,monospace;text-align:right}
.reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.review{padding:25px;background:#fff;border:1px solid var(--line)}.review img{width:100%;height:125px;object-fit:cover;filter:grayscale(.65)}.stars{margin-top:18px;color:var(--red);letter-spacing:3px}.review blockquote{margin:13px 0;color:#52635d}.review footer{color:#89958f;font-size:9px}
.plans{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--ink);border-bottom:1px solid var(--ink)}.plan{min-height:410px;padding:30px;display:flex;flex-direction:column;background:#fff}.plan+.plan{border-left:1px solid var(--ink)}.plan.best{color:#fff;background:var(--green)}.plan small{color:#75857e;font-family:Consolas,monospace}.plan.best small{color:#c8e3d7}.plan h3{font-family:Georgia,"Songti SC",serif;font-size:25px;font-weight:500}.price{font-family:Georgia,serif;font-size:40px}.price span{font-size:10px}.plan ul{padding:0;list-style:none;color:#718079;font-size:11px}.plan.best ul{color:#d1e5dc}.plan li{padding:6px}.plan li:before{content:"•";margin-right:8px}.plan .btn{width:100%;margin-top:auto}.plan.best .btn{color:var(--green);background:#fff}
.faq{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.qa{padding:27px;background:#fff;border-top:2px solid var(--green)}.qa code{color:var(--red);font:9px Consolas,monospace}.qa h3{margin:20px 0 8px;font-family:Georgia,"Songti SC",serif;font-weight:500}.qa p,.qa li{color:var(--muted);font-size:12px}
.page-hero{padding:80px 0 65px;background:#ecefe8;border-bottom:1px solid var(--ink)}.page-grid{display:grid;grid-template-columns:1fr 390px;align-items:center;gap:85px}.page-hero h1{font-size:clamp(45px,6vw,70px)}.page-figure{padding:15px;background:#fff;border:1px solid var(--ink)}.page-figure img{width:100%;height:400px;object-fit:contain}
.downloads{display:grid;gap:10px}.download{display:grid;grid-template-columns:70px 1fr 210px;align-items:center;gap:24px;padding:23px;background:#fff;border:1px solid var(--line)}.download.primary{border:2px solid var(--green)}.os{width:55px;height:55px;display:grid;place-items:center;color:#fff;background:var(--green);font-weight:900}.download h3{margin:0}.download p{margin:4px 0;color:var(--muted);font-size:10px}.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:9px}.step{padding:27px;background:#243c34;border:1px solid #6e8e81}.step b{color:#c9e3d8;font:20px Georgia,serif}.step h3{margin:48px 0 8px}.step p{color:#96aaa1;font-size:11px}
.guide{display:grid;grid-template-columns:240px 1fr;gap:75px}.guide-nav{position:sticky;top:100px;height:max-content;border-top:2px solid var(--ink)}.guide-nav a{display:block;padding:11px 4px;border-bottom:1px solid var(--line);color:#687972;font:10px Consolas,monospace}.guide-nav a:hover{color:var(--red)}.guide-body h2{margin:55px 0 14px;font-family:Georgia,"Songti SC",serif;font-size:30px;font-weight:500}.guide-body h2:first-child{margin-top:0}.guide-body p,.guide-body li{color:var(--muted)}.notice{padding:20px;background:#e9eee8;border-left:4px solid var(--green)}.cta{margin-top:65px;padding:36px 40px;display:flex;align-items:center;justify-content:space-between;gap:30px;color:#fff;background:var(--green)}.cta h2{margin:0;font-family:Georgia,"Songti SC",serif;font-weight:500}.cta p{margin:4px 0;color:#cce3d8}.cta .btn{color:var(--green);background:#fff}.footer{padding:55px 0 22px;color:#c1d1ca;background:#172722}.footer-grid{display:grid;grid-template-columns:1.6fr repeat(3,1fr);gap:45px}.footer .brand{color:#fff}.footer p{max-width:340px;color:#718a80;font-size:10px}.footer h3{color:#c8d9d1;font-size:10px}.footer-links{display:grid;gap:8px;color:#799187;font-size:10px}.copy{display:flex;justify-content:space-between;margin-top:40px;padding-top:17px;border-top:1px solid #3b5149;color:#657c73;font-size:9px}
@media(max-width:920px){.links{position:absolute;top:74px;right:23px;left:23px;display:none;padding:18px;background:#f4f2ea;border:1px solid var(--ink);flex-direction:column}.links.open{display:flex}.menu{display:block}.lang,.nav>.btn{display:none}.hero-grid,.page-grid,.methods,.routes{grid-template-columns:1fr}.phone-figure{max-width:450px;margin:auto}.method-figure{position:static}.head{grid-template-columns:1fr;gap:17px}.head p{grid-column:1}.guide{grid-template-columns:1fr}.guide-nav{position:static}.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:620px){.wrap{width:calc(100% - 28px)}.report-meta{gap:15px;flex-direction:column}.hero-grid{min-height:auto;padding:55px 0}.hero h1{font-size:48px}.trust-row,.metrics,.plans,.steps{grid-template-columns:1fr}.trust-row span+span,.metric+.metric,.plan+.plan{border-top:1px solid var(--line);border-left:0}.section{padding:74px 0}.reviews,.faq{grid-template-columns:1fr}.download{grid-template-columns:65px 1fr}.download .btn{grid-column:1/-1}.cta,.copy{align-items:flex-start;flex-direction:column}.footer-grid{grid-template-columns:1fr 1fr}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}
