/* Product stories: static, responsive layouts with no third-party dependencies. */
:root{color-scheme:light;--ink:#202722;--muted:#59625b;--paper:#faf9f5;--line:#dedfd6;--accent:#9d431f;--soft:#f2e9dd;--panel:#203b30;--bright:#d8e8b9}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:96px}body{margin:0;background:var(--paper);color:var(--ink);font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.85}body.tokenvis{--ink:#182b35;--muted:#52636a;--paper:#f5f8f7;--line:#d5e1df;--accent:#146858;--soft:#e2eeea;--panel:#102e36;--bright:#a6e7d0}a{color:var(--accent);text-underline-offset:4px}a:hover{text-decoration-thickness:2px}a:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:5px}p{margin:0 0 1.15em}h1,h2,h3{line-height:1.35;margin:0;letter-spacing:-.035em}h1{font-size:clamp(36px,4.4vw,62px);font-weight:780;max-width:820px}h2{font-size:clamp(27px,3vw,38px)}h3{font-size:21px}strong{font-weight:720}.wrap{max-width:1160px;margin:auto;padding:0 30px}.hero{padding:112px 0 60px;border-bottom:1px solid var(--line)}.eyebrow{font-size:12px;letter-spacing:.16em;text-transform:uppercase;font-weight:750;color:var(--accent);margin-bottom:20px}.hero-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:52px;align-items:center}.intro{font-size:18px;color:var(--muted);max-width:680px;margin:24px 0}.article-meta{font-size:12px;color:var(--muted);margin-top:27px}.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}.button{display:inline-flex;align-items:center;justify-content:center;padding:13px 21px;border:1px solid var(--accent);border-radius:6px;text-decoration:none;font-size:15px;font-weight:700;min-height:48px}.button.primary{background:var(--accent);color:white}.button.secondary{color:var(--accent);background:transparent}.button:hover{filter:brightness(.93)}.hero-note{font-size:12px;color:var(--muted);margin-top:15px}.visual{background:var(--panel);color:#f1f7f4;padding:30px;border-radius:14px;box-shadow:0 20px 45px -30px #102a24}.visual-label{font-size:11px;letter-spacing:.13em;color:var(--bright);margin-bottom:28px}.visual-title{font-size:28px;font-weight:700;line-height:1.4;margin-bottom:24px}.flow-step{display:flex;align-items:flex-start;gap:14px;padding:17px 0;border-top:1px solid #ffffff29}.flow-step b{font-size:12px;color:var(--bright);padding-top:4px}.flow-step strong{display:block;font-size:17px}.flow-step small{display:block;font-size:12px;color:#c7d9d5;line-height:1.7;margin-top:4px}.visual-caption{font-size:11px;color:#c7d9d5;padding-top:15px;margin:0}.gateway{border:1px solid #a6e7d079;border-radius:8px;padding:20px;text-align:center;background:#ffffff08;margin:16px 0}.gateway strong{font-size:31px;display:block}.gateway span{font-size:12px;color:var(--bright)}.ports{display:flex;gap:8px;flex-wrap:wrap}.ports span{padding:7px 11px;background:#ffffff0e;border:1px solid #ffffff21;border-radius:5px;font-size:12px;flex:1;text-align:center;white-space:nowrap}.connector{text-align:center;color:var(--bright);font-size:17px;margin:9px 0}.subnav{border-bottom:1px solid var(--line)}.subnav .wrap{display:flex;flex-wrap:wrap;gap:12px 30px;padding-top:16px;padding-bottom:16px}.subnav a{font-size:13px;text-decoration:none;color:var(--muted)}.section{padding:64px 0;border-bottom:1px solid var(--line)}.section-head{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start;margin-bottom:30px}.section-head p{color:var(--muted);margin:6px 0 0}.kicker{font-size:12px;color:var(--accent);font-weight:750;letter-spacing:.08em;margin:0 0 12px}.grid2{display:grid;grid-template-columns:1fr 1fr;gap:22px}.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.card{background:#ffffff96;border:1px solid var(--line);border-radius:10px;padding:28px}.card h3{margin-bottom:14px}.card p{font-size:15px;color:var(--muted)}.card p:last-child{margin-bottom:0}.card .mini{font-size:11px;color:var(--accent);font-weight:750;letter-spacing:.1em;margin-bottom:12px}.card ul{padding-left:20px;margin:14px 0 0;font-size:15px;color:var(--muted)}.card li{margin:8px 0}.callout{border-left:3px solid var(--accent);background:var(--soft);padding:23px 26px;margin-top:26px;font-size:16px}.callout p:last-child{margin:0}.scenario{display:grid;grid-template-columns:200px 1fr;gap:30px;padding:27px 0;border-top:1px solid var(--line)}.scenario:first-child{border-top:0}.scenario p{font-size:16px}.scenario p:last-child{margin:0;color:var(--muted)}.steps{list-style:none;padding:0;margin:0;counter-reset:step}.steps li{counter-increment:step;position:relative;padding:22px 0 22px 62px;border-top:1px solid var(--line)}.steps li:before{content:counter(step,decimal-leading-zero);position:absolute;left:0;top:25px;color:var(--accent);font-size:16px;font-weight:750}.steps h3{margin-bottom:10px}.steps p{margin:0;color:var(--muted);font-size:16px}.measure{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border:1px solid var(--line);border-radius:8px;margin-top:26px;overflow:hidden}.measure div{padding:23px;border-right:1px solid var(--line)}.measure div:last-child{border:0}.measure strong{display:block;margin-bottom:6px}.measure span{color:var(--muted);font-size:14px}.formula{background:var(--panel);color:#e9f2ef;padding:24px 28px;border-radius:8px;font-size:18px;margin:24px 0 0}.formula small{display:block;font-size:13px;color:#c7d9d5;margin-top:10px}.faq{max-width:860px}.faq details{border-top:1px solid var(--line);padding:19px 0}.faq details:last-child{border-bottom:1px solid var(--line)}.faq summary{font-size:17px;font-weight:650;cursor:pointer;padding-right:15px}.faq details p{font-size:15px;color:var(--muted);margin:14px 0 0}.closing{padding:65px 0;background:var(--soft)}.closing h2{max-width:750px}.closing p{max-width:730px;margin-top:20px;color:var(--muted)}.contact-line{font-size:14px!important}.source-note{font-size:12px;color:var(--muted);padding-top:32px;padding-bottom:32px}.source-note hr{border:0;border-top:1px solid var(--line);margin:0 0 20px}.source-note p{margin-bottom:9px}.page-footer{border-top:1px solid var(--line);padding:27px 0;color:var(--muted);font-size:13px}.page-footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:15px}.skip-link{position:fixed;top:-80px;left:15px;padding:10px;background:white;z-index:1001}.skip-link:focus{top:10px}.seo-context{max-width:1100px!important;margin:24px auto!important}.seo-content-meta{max-width:1100px;margin:20px auto}
@media(max-width:850px){.hero-grid{grid-template-columns:1fr;gap:32px}.hero{padding-top:100px}.visual{max-width:600px}.grid3{grid-template-columns:1fr}.section-head{grid-template-columns:1fr;gap:16px}.section{padding:46px 0}.visual-title{font-size:24px}}
@media(max-width:580px){.wrap{padding:0 21px}.hero{padding-bottom:38px}h1{font-size:36px}.intro{font-size:17px}.grid2{grid-template-columns:1fr}.card{padding:23px}.scenario{grid-template-columns:1fr;gap:14px}.measure{grid-template-columns:1fr}.measure div{border-right:0;border-bottom:1px solid var(--line)}.actions .button{width:100%}.visual{padding:25px}.subnav .wrap{gap:10px 22px}.closing{padding:45px 0}.formula{font-size:16px;padding:22px}.seo-context{margin:24px 21px!important}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}