:root{--paper:#f6f4ef;--card:#fffefb;--ink:#171a20;--muted:#56616d;--blue:#145ff5;--purple:#6950e8;--line:rgba(23,26,32,.13)}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:95px}body{margin:0;color:var(--ink);background:var(--paper);font:16px/1.8 "PingFang SC","Microsoft YaHei",sans-serif}a{color:inherit;text-decoration:none}button,input{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--blue);outline-offset:5px}img{max-width:100%;height:auto}h1,h2,h3,p{margin:0}h1,h2{font-family:BrandSerif,"Songti SC","Noto Serif SC",serif;font-weight:700;letter-spacing:-.035em}h1{font-size:clamp(40px,4.9vw,70px);line-height:1.24}h2{font-size:clamp(28px,3vw,42px);line-height:1.4}h3{font-size:19px;line-height:1.5}p{color:var(--muted)}.wrap{width:min(1184px,calc(100% - 80px));margin-inline:auto}.site-header{height:95px;display:flex;align-items:center;gap:30px;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:11px;font-weight:800;line-height:1.2;white-space:nowrap}.brand small{display:block;margin-top:5px;font-size:11px;font-weight:500;letter-spacing:.1em;color:var(--muted)}nav{display:flex;align-items:center;gap:25px;margin-left:auto;font-size:13px}nav a{padding:10px 0}nav a:hover,nav a[aria-current]{color:var(--blue)}.button{display:inline-flex;align-items:center;justify-content:center;gap:20px;min-height:49px;padding:12px 22px;border:1px solid var(--line);border-radius:5px;font-size:14px;font-weight:700;line-height:1.5;transition:background .2s,transform .2s}.button:hover{transform:translateY(-2px)}.primary{background:var(--blue);border-color:var(--blue);color:white}.primary:hover{background:#0f4dcc}.secondary{background:var(--card)}.compact{min-height:40px;padding:9px 15px;font-size:12px;background:var(--card);gap:12px}.eyebrow{font-size:10px;letter-spacing:.16em;font-weight:800;color:var(--blue);margin-bottom:20px}.hero{display:grid;grid-template-columns:1.08fr 1fr;gap:62px;padding-block:82px 88px;align-items:center}.hero h1{margin-bottom:25px}.ink{position:relative;display:inline-block}.ink:after{content:"";position:absolute;height:6px;bottom:-6px;left:0;right:0;background:var(--blue);transform:rotate(-1deg)}.lead{font-size:17px;line-height:1.95;max-width:580px}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}.micro{margin-top:17px;font-size:12px}.browser-status{display:flex;gap:10px 17px;flex-wrap:wrap;margin-top:26px;font-size:10px;color:var(--muted)}.browser-status>span{display:flex;align-items:center;gap:6px}.dot{width:5px;height:5px;background:#168353;display:inline-block;border-radius:100%}.hero-proof{background:#ebe8e0;border:1px solid var(--line);padding:22px 26px;position:relative;border-radius:6px}.proof-top{display:flex;justify-content:space-between;font-size:10px;color:var(--muted);margin-bottom:18px}.proof-label{letter-spacing:.1em}.mono{font:11px/1.8 ui-monospace,Consolas,monospace}.article-sheet{background:var(--card);border:1px solid var(--line);padding:31px 30px;box-shadow:8px 8px 0 #e2ddd2;transform:rotate(-1deg);position:relative}.article-sheet:before{content:"";position:absolute;right:-1px;top:-1px;width:28px;height:28px;background:linear-gradient(45deg,#d5c8ff 49%,#ebe8e0 51%);border-bottom:1px solid var(--line);border-left:1px solid var(--line)}.sheet-tag{font-size:10px;color:var(--purple);font-weight:700;letter-spacing:.09em}.article-sheet h2{font-size:36px;line-height:1.35;margin-top:14px}.article-sheet>p{font-size:11px;margin-top:12px}.paper-lines{display:grid;gap:7px;margin-top:23px}.paper-lines b{height:3px;background:#dfdcd4;display:block}.paper-lines b:last-child{width:70%}.sheet-photo{display:flex;align-items:center;gap:18px;background:#f1eef9;border:1px solid #e0d9f5;padding:16px;margin-top:20px}.sheet-photo span{font-size:13px;font-weight:700;line-height:1.6}.sheet-photo small{font-size:10px;color:var(--muted);font-weight:400}.route-line{display:flex;justify-content:space-between;align-items:center;gap:7px;font-size:10px;margin-top:27px}.route-line strong{color:var(--blue)}.proof-note{font-size:9px;margin-top:12px;color:#6a6f76}.principles{border-top:1px solid var(--line);border-bottom:1px solid var(--line);display:grid;grid-template-columns:repeat(3,1fr);padding-block:25px}.principles>div{padding:0 32px;border-left:1px solid var(--line)}.principles>div:first-child{padding-left:0;border:0}.number{font:11px ui-monospace,monospace;color:var(--purple)}.principles h2{font-family:inherit;font-size:17px;letter-spacing:0;margin-top:12px}.principles p{font-size:12px;line-height:1.9;margin-top:8px}.section{padding-block:80px}.section-heading{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:32px}.text-link{display:inline-flex;align-items:center;gap:12px;color:var(--blue);font-weight:700;font-size:13px;min-height:34px}.text-link:hover{text-decoration:underline}.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:28px}.steps li{border-top:2px solid var(--ink);padding-top:20px}.steps span{font-size:10px;letter-spacing:.1em;color:var(--muted)}.steps h3{margin-top:14px}.steps p{font-size:13px;margin-top:12px}.case-band{background:#eeece6;border-block:1px solid var(--line);padding-block:70px}.case-layout{display:grid;grid-template-columns:.65fr 1fr;gap:55px;align-items:center}.case-layout p{font-size:13px;line-height:1.95;margin-top:20px}.case-layout .eyebrow{margin-top:0}.case-layout .text-link{margin-top:18px}.case-layout figure{margin:0;background:var(--card);border:1px solid var(--line);border-radius:5px;overflow:hidden}.case-layout img{display:block}.case-layout figcaption{font-size:10px;padding:13px 17px;border-top:1px solid var(--line);color:var(--muted)}.duo{display:grid;grid-template-columns:1.2fr 1fr;gap:80px;align-items:start}.duo>div>p:not(.eyebrow){font-size:14px;margin-top:23px}.duo .text-link{margin-top:18px}.note{background:var(--card);border:1px solid var(--line);padding:30px}.note p:not(.eyebrow){font-size:13px;margin-top:17px}.faq-preview{padding-top:15px}details{border-top:1px solid var(--line)}details:last-child{border-bottom:1px solid var(--line)}summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;padding:24px 0;gap:15px;font-size:16px;font-weight:700}summary::-webkit-details-marker{display:none}summary span{font-size:24px;color:var(--blue);font-weight:400}details[open] summary span{transform:rotate(45deg)}details p{max-width:850px;font-size:14px;padding:0 35px 24px 0}.closing{display:flex;align-items:center;justify-content:space-between;gap:35px;padding:50px 40px;background:#e9effc;border:1px solid #ccd9f5;margin-bottom:75px;border-radius:5px}.closing h2{font-size:34px}.closing p:not(.eyebrow){margin-top:15px;font-size:13px}.closing .eyebrow{margin-bottom:12px}.site-footer{border-top:1px solid var(--line);padding-block:36px}.footer-brand{display:flex;align-items:center;gap:12px}.footer-brand strong{font-size:14px}.footer-brand p{font-size:11px;margin-top:3px}.footer-links{display:flex;gap:13px 22px;flex-wrap:wrap;margin-top:26px;font-size:11px;color:var(--muted)}.footer-links button{padding:0;border:0;background:none;color:inherit;font-size:11px}.footer-links a:hover,.footer-links button:hover{color:var(--blue)}.footer-note{font-size:10px;margin-top:20px}.page-hero{padding-block:70px 54px;border-bottom:1px solid var(--line)}.page-hero .lead{margin-top:25px;max-width:750px}.page-hero>.button{margin-top:27px}.reading{max-width:840px}.reading h2{font-size:28px;margin:35px 0 15px}.reading h2:first-child{margin-top:0}.reading p,.reading li{font-size:15px;line-height:2}.reading p a,.notice a{color:var(--blue);text-decoration:underline}.reading ul{padding-left:22px}.notice{background:#eeece6;border-left:2px solid var(--purple);padding:17px 20px;margin-top:24px;font-size:13px;line-height:1.9}.reading-steps{padding-left:28px}.reading-steps li{padding:15px 0 18px 8px;border-bottom:1px solid var(--line)}.reading-steps p{margin-top:10px}.table-scroll{overflow-x:auto}table{border-collapse:collapse;width:100%;min-width:600px;font-size:13px}th,td{padding:17px 14px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}thead{background:#eeece6}tbody th{white-space:nowrap}.faq-page{max-width:920px}.release{border-left:3px solid var(--purple);padding-left:26px}.skip{position:fixed;left:12px;top:8px;background:var(--blue);color:white;padding:8px;z-index:10;transform:translateY(-170%)}.skip:focus{transform:none}@media(max-width:1000px){.wrap{width:calc(100% - 48px)}.site-header{gap:18px}nav{gap:17px}.hero{gap:35px;padding-block:60px}.hero-proof{padding:18px}.article-sheet{padding:23px}.article-sheet h2{font-size:31px}.case-layout{gap:30px;grid-template-columns:.7fr 1fr}.duo{gap:35px}.principles>div{padding:0 22px}}@media(max-width:700px){.wrap{width:calc(100% - 36px)}.site-header{height:auto;min-height:80px;flex-wrap:wrap;padding-block:15px;gap:15px}.brand{font-size:14px}.brand img{width:29px;height:29px}.site-header>.button{margin-left:auto}.site-header nav{width:100%;order:3;justify-content:space-between;margin:0;gap:10px;font-size:12px;border-top:1px solid var(--line);padding-top:5px}.hero{grid-template-columns:1fr;gap:37px;padding-block:45px}.hero h1{font-size:43px}.lead{font-size:15px}.hero-proof{max-width:490px;width:100%;margin:auto;padding:20px}.article-sheet{padding:26px}.article-sheet h2{font-size:34px}.principles{grid-template-columns:1fr;padding-block:5px}.principles>div,.principles>div:first-child{padding:22px 0;border:0;border-top:1px solid var(--line)}.principles>div:first-child{border:0}.principles h2{margin-top:8px}.section{padding-block:48px}.section-heading{display:block}.section-heading .text-link{margin-top:16px}.steps{grid-template-columns:1fr;gap:25px}.case-band{padding-block:48px}.case-layout,.duo{grid-template-columns:1fr;gap:28px}.case-layout figure{margin-top:5px}.closing{display:block;padding:28px 23px;margin-bottom:45px}.closing h2{font-size:27px}.closing .button{margin-top:22px}.page-hero{padding-block:45px 35px}.page-hero h1{font-size:39px}.reading h2{font-size:25px}.reading p,.reading li{font-size:14px}.note{padding:25px}.site-footer{padding-block:28px}.footer-links{gap:12px 18px}summary{font-size:14px;line-height:1.8}details p{font-size:13px;padding-right:10px}.faq-preview{padding-top:0}.eyebrow{font-size:9px}.browser-status{font-size:10px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}
