:root{--paper:#f7f5ef;--ink:#252f2b;--muted:#69706b;--line:#dedfd5;--accent:#c34c2e;--warm:#f1e8da;--dark:#24322c;--mono:"SFMono-Regular",Consolas,"Liberation Mono",monospace;--sans:"Inter","Helvetica Neue","PingFang SC","Microsoft YaHei",Arial,sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:15px;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button{font:inherit}button,a,summary{-webkit-tap-highlight-color:transparent}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:5px}button{cursor:pointer}img,svg{display:block}p{margin:0}h1,h2,h3{margin:0;font-weight:650}::selection{background:#f1c9b4;color:var(--ink)}.container{max-width:1180px;margin-inline:auto;width:calc(100% - 96px)}.mono,.eyebrow{font-family:var(--mono)}.eyebrow{font-size:10px;letter-spacing:1.3px;line-height:1.7;display:flex;align-items:center;gap:10px}.small-mark{width:15px;height:11px;border-left:3px solid var(--accent);border-right:3px solid var(--accent);transform:skew(-12deg)}.skip-link{position:fixed;top:12px;left:12px;padding:12px 20px;background:var(--ink);color:white;z-index:100;transform:translateY(-150%)}.skip-link:focus{transform:none}.site-header{border-bottom:1px solid var(--line)}.header-inner{height:88px;display:flex;align-items:center;justify-content:space-between;gap:30px}.brand{display:inline-flex;gap:10px;align-items:center;font-family:var(--sans);font-weight:750;font-size:25px;letter-spacing:-1.3px}.brand-dot{color:var(--accent)}.main-nav{display:flex;gap:32px;font-size:13px}.main-nav a,.footer-inner nav a{transition:color .18s}.main-nav a:hover,.footer-inner nav a:hover{color:var(--accent)}.header-action{font-size:12px;border:1px solid #bbc0b4;padding:11px 17px;border-radius:4px;display:flex;gap:24px;align-items:center}.header-action:hover{border-color:var(--accent)}.hero{display:grid;grid-template-columns:1fr 1.04fr;gap:58px;padding-top:85px;padding-bottom:65px;align-items:center}.hero-copy{padding-bottom:10px}h1{font-size:clamp(40px,4.9vw,62px);line-height:1.22;letter-spacing:-2.4px;margin-top:26px}h1>span{color:var(--accent)}.hero-description{color:#68716b;font-size:16px;line-height:1.9;margin-top:29px}.hero-actions{display:flex;align-items:center;gap:23px;margin-top:33px}.button{display:inline-flex;align-items:center;justify-content:space-between;gap:30px;padding:15px 21px;border-radius:4px;font-size:13px;font-weight:550;min-height:50px;transition:background .2s,transform .2s,border-color .2s}.button:hover{transform:translateY(-2px)}.primary{color:#fffaf4;background:var(--accent);border:1px solid var(--accent)}.primary:hover{background:#a83c22;border-color:#a83c22}.secondary{border:1px solid #c4c7bb;background:transparent}.secondary:hover{border-color:var(--ink);background:#ecebe3}.text-link{display:inline-flex;align-items:center;gap:16px;font-size:12px;padding:10px 0;border-bottom:1px solid transparent}.text-link:hover{border-color:currentColor}.hero-note{margin-top:25px;font-size:10px;color:var(--muted);display:flex;align-items:center;gap:10px;letter-spacing:.2px}.hero-note>span{font-size:16px;color:var(--accent)}.hero-demo{width:100%;min-width:0}.dispatch{position:relative;isolation:isolate;height:470px;background-color:#edece2;background-image:linear-gradient(#deded033 1px,transparent 1px),linear-gradient(90deg,#deded033 1px,transparent 1px);background-size:23px 23px;border:1px solid #dbded1;border-radius:7px;overflow:hidden}.dispatch-heading{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;padding:19px 22px;border-bottom:1px solid #d7d9cb;background:#edece28c}.dispatch-heading>.mono{font-size:10px;letter-spacing:1px}.demo-label{font-size:10px;color:#747c6e}.dispatch-lines{position:absolute;inset:35px 0 0;width:100%;height:calc(100% - 35px);z-index:0}.agent{position:absolute;background:#fafaf5;border:1px solid #dddfd1;display:flex;gap:10px;align-items:center;border-radius:5px;padding:11px 12px;box-shadow:0 4px 8px #26352c04;z-index:1}.agent strong{font-size:12px;display:block;font-weight:550}.agent small{font-family:var(--mono);display:block;font-size:7px;letter-spacing:.8px;color:#626e5c;margin-top:5px;white-space:nowrap}.agent-from{top:76px;left:24px}.agent-to{bottom:58px;right:23px}.avatar{width:33px;height:33px;display:grid;place-items:center;border-radius:4px;font-size:16px;font-family:var(--mono)}.research{color:#647a6a;background:#e5ecdf}.writing{color:#ba5a38;background:#f4e7d6}.agent-dot{width:5px;height:5px;background:#5e8c5e;border-radius:50%;margin-left:10px}.read-receipt{font-size:8px;padding:5px 6px;border-radius:3px;color:#4f6a53;background:#ecf0e7;white-space:nowrap}.message-card{position:absolute;z-index:2;left:50%;top:139px;transform:translateX(-50%) rotate(-4deg);width:calc(100% - 92px);max-width:354px;background:#fffdf7;border:1px solid #e0dfce;border-radius:3px;padding:20px 21px 15px;box-shadow:0 10px 19px #3b392016,0 2px 3px #3b392010;transition:transform .25s}.message-card.changed{animation:letter-change .38s ease-out}.letter-top{display:flex;justify-content:space-between;align-items:flex-start;min-height:32px}.letter-top>.mono{font-size:8px;letter-spacing:1px;padding-top:5px;color:#828573}.postage{width:47px;height:52px;outline:2px dotted #d98d6a;outline-offset:2px;background:#f9eadc;display:flex;align-items:center;flex-direction:column;justify-content:center;color:#c0653f;transform:rotate(8deg);margin:-4px -1px -25px 0}.postage>span{font-size:24px;font-weight:600;line-height:1}.postage>small{font-family:var(--mono);font-size:5px;letter-spacing:.7px;margin-top:4px}.letter-subject{font-size:17px;font-weight:650;letter-spacing:-.4px;margin:9px 0 10px;max-width:calc(100% - 44px)}.letter-body{font-size:10px;color:#7a7c71;line-height:1.8;max-width:260px;min-height:36px}.letter-file{margin-top:14px;display:flex;align-items:center;gap:6px;border:1px solid #e5e6da;border-radius:3px;background:#f6f6ef;padding:8px 7px;font-family:var(--mono);font-size:8px}.letter-file svg{width:14px;height:14px;fill:none;stroke:#888f7f;stroke-width:1.1;flex-shrink:0}.file-tag{margin-left:auto;color:#687b60;font-family:var(--sans);font-size:7px;white-space:nowrap}.letter-bottom{display:flex;align-items:center;justify-content:space-between;margin-top:15px;border-top:1px solid #e9e9df;padding-top:11px;font-size:8px;color:#8c8c7e}.letter-bottom>.mono{font-size:7px;color:#b8633d;letter-spacing:.3px}.dispatch-caption{position:absolute;bottom:18px;left:23px;right:23px;display:flex;align-items:center;justify-content:center;gap:8px;font-size:9px;color:#7c8171}.caption-dot{width:4px;height:4px;background:#bc7150;border-radius:50%}.demo-controls{display:flex;justify-content:center;gap:5px;margin-top:13px}.demo-tab{display:flex;align-items:center;gap:6px;border:1px solid transparent;background:none;color:#7d8378;font-size:10px;padding:9px 12px;border-radius:4px}.demo-tab>span{font-family:var(--mono);font-size:8px;opacity:.65}.demo-tab.selected{border-color:#d9dbd0;background:#fffdf6;color:var(--ink)}.demo-tab:hover{color:var(--accent)}.assurance-strip{border-top:1px solid var(--line);border-bottom:1px solid var(--line);display:flex;justify-content:space-between;padding:21px 12px;gap:20px;font-size:11px;color:#626e5c}.assurance-strip span{display:flex;align-items:center;gap:11px}.assurance-strip i{font-style:normal;color:var(--accent);font-size:14px}.section{padding-block:99px}.section-intro{display:flex;justify-content:space-between;align-items:flex-end;gap:60px}.section-label{color:#626e5c}.section-intro h2{font-size:39px;line-height:1.4;letter-spacing:-1.1px;margin-top:18px}.intro-text{color:#626e5c;line-height:1.9;font-size:13px;min-width:240px;padding-bottom:5px}.steps{margin-top:57px;display:grid;grid-template-columns:repeat(3,1fr);gap:43px}.step{border-top:1px solid #bfc5b6;padding-top:22px}.step-index{font-family:var(--mono);font-size:22px;letter-spacing:-1px;color:var(--accent)}.step-index span{color:#c7ccbe;font-size:20px}.step h3{font-size:18px;margin:23px 0 13px;font-weight:600;letter-spacing:-.3px}.step p{font-size:12px;line-height:1.95;color:#626e5c;max-width:295px}.step-foot{display:flex;justify-content:space-between;margin-top:27px;color:#86917f;font-family:var(--mono);font-size:9px}.memory-section{background:var(--dark);color:#f2f1e8;overflow:hidden}.memory-inner{display:grid;grid-template-columns:1fr 1fr;gap:60px;padding-block:82px;align-items:center}.memory-copy .eyebrow{color:#a7b6a4}.memory-copy h2{font-size:35px;line-height:1.45;letter-spacing:-.8px;margin:23px 0}.memory-copy>p:not(.eyebrow){font-size:12px;line-height:2;color:#b5c0b1;margin-top:15px}.light-link{display:inline-flex;gap:36px;align-items:center;border-bottom:1px solid #6b7b64;padding:10px 0;margin-top:24px;font-size:11px}.light-link:hover{color:#efb596}.memory-visual{min-width:0}.collection-label{display:flex;gap:13px;align-items:center;padding-inline:14px;font-size:11px}.collection-label strong{font-weight:550;display:block}.collection-label div>span{display:block;font-size:8px;color:#9aa992;margin-top:5px}.folder-icon{font-size:21px;color:#c8bb93;transform:scaleX(1.25)}.version-badge{margin-left:auto;border:1px solid #596950;color:#b8c5ad;font-family:var(--mono);padding:6px 8px;border-radius:3px;font-size:8px;white-space:nowrap}.document-stack{position:relative;height:291px;margin-top:27px}.document{position:absolute;width:calc(100% - 45px);max-width:397px;border-radius:4px;background:#f1f0e7;color:#384039;box-shadow:0 10px 25px #12201628}.rear-document{inset:5px auto auto 32px;transform:rotate(5deg);padding:22px 25px;height:247px;background:#b9c3ad;color:#657058}.rear-document>.mono{font-size:8px}.paper-lines{height:140px;margin-top:24px;background:repeating-linear-gradient(transparent,transparent 20px,#8c9a7b55 20px,#8c9a7b55 21px)}.front-document{top:18px;left:3px;transform:rotate(-3deg);padding:18px 22px}.document-title{display:flex;gap:8px;align-items:center;font-size:9px;font-family:var(--mono);border-bottom:1px solid #d5dac8;padding-bottom:12px}.doc-symbol{font-size:17px;color:#8b987b}.document-mark{margin-left:auto;color:#c47045;font-size:20px}.document-heading{font-weight:600;font-size:16px;margin-top:17px}.document-body{font-size:9px;line-height:1.85;color:#7f8875;max-width:290px;margin-top:10px}.note-lines{margin-top:13px;display:flex;flex-direction:column;gap:5px}.note-lines i{height:3px;background:#d8dccc;border-radius:10px;width:81%}.note-lines i:nth-child(2){width:93%}.note-lines i:nth-child(3){width:54%}.document-files{display:flex;justify-content:space-between;border-top:1px solid #d9dece;padding-top:8px;margin-top:9px;font-size:8px;font-family:var(--mono);color:#6d7b60}.document-files>span:last-child{font-family:var(--sans);font-size:7px;color:#839178}.document-bottom{display:flex;justify-content:space-between;margin-top:18px;font-size:7px;color:#8b957e}.revision-track{display:flex;align-items:center;justify-content:center;gap:9px;color:#81957b;font-size:8px;margin-top:14px}.revision-track span{display:flex;gap:7px;align-items:center}.revision-track i{width:5px;height:5px;border:1px solid #718369;border-radius:50%;display:inline-block}.revision-track b{width:30px;border-top:1px dashed #556b4f}.revision-track .current{color:#dbd8b7}.revision-track .current i{background:#d7a378;border-color:#d7a378}.privacy-details{display:grid;grid-template-columns:repeat(3,1fr);gap:43px;margin-top:50px}.privacy-details article{border-top:1px solid var(--line);padding-top:25px}.detail-symbol{font-size:25px;color:#707e69;display:block;line-height:1.3}.privacy-details h3{font-size:17px;margin:20px 0 13px}.privacy-details p{font-size:12px;line-height:1.95;color:#626e5c;max-width:295px}.privacy-link{margin-top:32px;color:var(--accent);font-size:11px;border-bottom:1px solid #ddbba8;gap:26px}.start-section{background:#eae9de;border-block:1px solid #dedfd2}.start-inner{display:flex;align-items:center;justify-content:space-between;gap:40px;padding-block:65px}.start-inner h2{font-size:34px;letter-spacing:-.9px;margin:13px 0 15px}.start-inner>div>p:not(.eyebrow){font-size:12px;line-height:1.9;color:#626e5c}.start-actions{width:277px;display:flex;flex-direction:column;gap:11px;align-items:stretch}.start-actions .button{font-size:12px;padding:15px 19px}.start-note{font-size:8px;text-align:center;color:#626e5c;margin-top:4px}.faq-section{padding-block:75px;display:grid;grid-template-columns:1fr 1.65fr;gap:50px}.faq-section h2{font-size:22px;letter-spacing:-.5px;padding-top:17px}.faq-list details{border-bottom:1px solid var(--line)}.faq-list details:first-child{border-top:1px solid var(--line)}summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:20px;align-items:center;padding:20px 0;font-size:12px;font-weight:550}summary::-webkit-details-marker{display:none}summary>span{font-size:18px;color:#96a08c;transition:transform .2s}details[open] summary>span{transform:rotate(45deg)}.faq-list details p{font-size:12px;line-height:1.95;color:#626e5c;margin:0 34px 23px 0}.site-footer{border-top:1px solid var(--line)}.footer-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;padding-block:35px}.footer-inner .brand{font-size:23px}.footer-inner p{font-size:9px;color:#899080;margin-top:12px}.footer-inner nav{display:flex;gap:23px;font-size:10px}.footer-license{font-family:var(--mono);font-size:8px;letter-spacing:.4px;color:#939a8b}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
/* User guide pages share the same type, spacing, and navigation. */
.guide-layout{display:grid;grid-template-columns:215px minmax(0,1fr);gap:70px;padding-block:65px 95px}.guide-toc{border-right:1px solid var(--line);padding-right:25px}.guide-toc p{font-family:var(--mono);font-size:9px;letter-spacing:1px;color:#8b9381;margin:6px 0 22px}.guide-toc nav{display:flex;flex-direction:column;gap:19px;position:sticky;top:32px;font-size:12px}.guide-toc a:hover{color:var(--accent)}.guide-article{max-width:690px}.guide-article h1{font-size:40px;margin:14px 0 25px;line-height:1.35;letter-spacing:-1px}.guide-lede{font-size:16px;line-height:1.9;color:#78826e;margin-bottom:35px}.guide-article section{border-top:1px solid var(--line);margin-top:37px;padding-top:31px}.guide-article h2{font-size:23px;margin-bottom:19px;letter-spacing:-.5px}.guide-article h3{font-size:16px;margin:25px 0 14px}.guide-article section p{font-size:14px;line-height:2;color:#626e5c;margin:12px 0}.guide-article section ul,.guide-article section ol{font-size:13px;line-height:2;color:#626e5c;padding-left:23px}.guide-article section li{margin-bottom:9px}.guide-article strong{color:var(--ink);font-weight:600}.guide-article a:not(.button){color:var(--accent);text-decoration:underline;text-underline-offset:4px}.guide-article pre{overflow:auto;background:#eaece2;border:1px solid #dfe2d3;padding:19px 21px;border-radius:4px;line-height:1.9;font-family:var(--mono);font-size:11px;color:#5c7153}.guide-article code{font-size:.9em;font-family:var(--mono);overflow-wrap:anywhere}.example-block{border-left:2px solid var(--accent);background:#efede2;padding:15px 20px;margin-block:19px}.example-block p{margin:0!important;font-size:13px!important}.copy-button{display:inline-flex;gap:9px;padding:8px 12px;background:none;border:1px solid #c6cdba;border-radius:3px;font-size:10px;color:#65755a;margin-top:12px}.copy-button:hover{border-color:var(--accent)}.guide-article .notice-box{border:1px solid #ddd3bb;padding:14px 20px;border-radius:4px;background:#f1ebdf;font-size:12px;line-height:1.9;color:#877b60}.back-link{font-size:11px;color:#87947a;display:inline-flex;gap:13px;align-items:center}
@keyframes letter-change{0%{transform:translateX(-50%) rotate(-4deg) translateY(3px);opacity:.6}100%{transform:translateX(-50%) rotate(-4deg);opacity:1}}
@media(min-width:1440px){.hero{padding-top:100px;padding-bottom:80px}.dispatch{height:480px}.message-card{top:151px}.agent-from{top:83px}}
@media(max-width:1050px){.container{width:calc(100% - 64px)}.hero{gap:30px;padding-top:65px}.hero-actions{gap:15px}.hero-actions .button{gap:18px;padding-inline:17px}.hero-actions .text-link{font-size:11px;gap:9px}.letter-subject{font-size:15px}.message-card{width:calc(100% - 55px);padding:17px}.agent-from{left:17px}.agent-to{right:17px}.main-nav{gap:24px}.memory-inner{gap:35px}.steps,.privacy-details{gap:28px}.guide-layout{gap:35px;grid-template-columns:175px 1fr}}
@media(max-width:760px){.container{width:calc(100% - 40px)}.header-inner{height:74px;gap:12px}.brand{font-size:23px}.brand img{width:29px;height:29px}.main-nav{display:none}.header-action{font-size:11px;padding:9px 12px;gap:18px}.hero{grid-template-columns:1fr;gap:44px;padding-top:52px;padding-bottom:43px}.hero-copy{max-width:530px}.hero-copy .eyebrow{font-size:9px;letter-spacing:.8px}h1{font-size:clamp(42px,8vw,60px);letter-spacing:-1.8px;margin-top:23px}.hero-description{font-size:15px;margin-top:23px}.hero-actions{margin-top:27px;gap:23px}.hero-actions .button{padding:14px 20px;gap:24px}.hero-actions .text-link{font-size:12px;gap:12px}.hero-note{font-size:9px;margin-top:22px}.hero-demo{max-width:560px;justify-self:center}.dispatch{height:470px}.message-card{max-width:354px;width:calc(100% - 58px);padding:19px;top:132px}.letter-subject{font-size:17px}.agent-from{left:24px;top:71px}.agent-to{right:23px;bottom:55px}.demo-controls{gap:7px}.demo-tab{font-size:10px;padding:9px 10px}.assurance-strip{justify-content:space-evenly;gap:12px;padding-inline:0;font-size:9px}.assurance-strip span{gap:6px}.assurance-strip i{font-size:12px}.section{padding-block:64px}.section-intro{align-items:flex-start;flex-direction:column;gap:22px}.section-intro h2{font-size:32px;margin-top:15px}.intro-text{font-size:12px}.intro-text br{display:none}.intro-text{max-width:440px}.steps{gap:22px;margin-top:37px}.step-index{font-size:18px}.step h3{font-size:14px;margin:19px 0 12px}.step p{font-size:11px;line-height:1.9}.step-foot{font-size:8px;gap:8px}.memory-inner{grid-template-columns:1fr;gap:47px;padding-block:62px}.memory-copy h2{font-size:31px}.memory-visual{width:100%;max-width:450px;justify-self:center}.document-stack{height:305px}.document{width:calc(100% - 36px)}.front-document{left:2px}.rear-document{left:27px}.privacy-details{gap:22px;margin-top:34px}.privacy-details h3{font-size:14px}.privacy-details p{font-size:11px}.start-inner{flex-direction:column;align-items:flex-start;gap:29px;padding-block:48px}.start-inner h2{font-size:30px}.start-actions{width:min(100%,350px)}.start-note{text-align:left}.faq-section{grid-template-columns:1fr;gap:23px;padding-block:50px}.faq-section h2{font-size:21px;padding-top:0}summary{font-size:12px;padding-block:18px}.footer-inner{align-items:flex-start;flex-wrap:wrap;row-gap:28px;padding-block:30px}.footer-inner nav{font-size:10px;gap:18px;padding-top:9px}.footer-license{width:100%;font-size:8px}.guide-layout{grid-template-columns:1fr;padding-top:31px;gap:27px}.guide-toc{border-right:0;border-bottom:1px solid var(--line);padding:0 0 19px}.guide-toc p{display:none}.guide-toc nav{position:static;flex-direction:row;flex-wrap:wrap;gap:18px;font-size:11px}.guide-article h1{font-size:34px}.guide-lede{font-size:14px}.guide-article h2{font-size:21px}.guide-article section p{font-size:13px}}
@media(max-width:430px){.hero-actions{gap:18px}.hero-actions .button{font-size:12px;padding-inline:16px;gap:20px}.hero-actions .text-link{font-size:10px;gap:9px}.dispatch{height:466px}.dispatch-heading{padding:17px}.agent-from{left:16px;top:63px}.agent-to{right:15px;bottom:55px}.message-card{top:130px;width:calc(100% - 40px);padding:17px;max-width:320px}.letter-top>.mono{font-size:7px}.postage{width:40px;height:46px}.postage>span{font-size:21px}.letter-subject{font-size:15px}.letter-body{font-size:9px;line-height:1.9;min-height:34px}.letter-file{font-size:7px;padding:8px 6px}.file-tag{font-size:6px}.letter-bottom{font-size:7px}.letter-bottom>.mono{font-size:6px}.dispatch-caption{left:14px;right:14px;font-size:8px}.agent strong{font-size:11px}.agent small{font-size:6px}.avatar{width:29px;height:29px;font-size:14px}.agent{padding:10px;gap:8px}.read-receipt{font-size:7px;padding:4px}.demo-tab{font-size:9px;padding:8px 8px;gap:4px}.demo-tab span{font-size:7px}.assurance-strip{flex-wrap:wrap;justify-content:flex-start;gap:15px 20px;font-size:9px;padding:17px 0}.steps,.privacy-details{grid-template-columns:1fr;gap:28px}.step h3{font-size:17px;margin:15px 0 11px}.step p{font-size:12px;max-width:100%}.step-foot{margin-top:17px;font-size:9px}.privacy-details h3{font-size:17px;margin:15px 0 11px}.privacy-details p{font-size:12px;max-width:100%}.privacy-details article{padding-top:19px}.detail-symbol{font-size:22px}.collection-label{padding-inline:4px;gap:10px}.collection-label strong{font-size:10px}.version-badge{font-size:7px;padding:5px 6px}.front-document{padding:17px}.document-title{font-size:8px}.document-body{font-size:8px}.document-heading{font-size:15px}.document-files{font-size:7px}.document-files>span:last-child{font-size:6px}.document-bottom{font-size:6px}.document-stack{height:276px}.rear-document{height:240px}.document{width:calc(100% - 26px)}.rear-document{left:20px}.revision-track{gap:7px;font-size:7px}.revision-track b{width:22px}.footer-inner nav{gap:16px}.footer-inner .brand{font-size:22px}.footer-inner>div{width:100%}.footer-inner nav{padding-top:0}.start-inner h2{font-size:28px}.start-inner br{display:none}.guide-article h1{font-size:30px}.guide-article pre{font-size:9px;padding:16px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}
/* Protocol reading keeps the source hierarchy, not a marketing-card layout. */
.rfc-layout{grid-template-columns:240px minmax(0,1fr);gap:50px}.rfc-toc .back-link{font-size:10px;margin-bottom:24px}.rfc-toc-nav{max-height:calc(100vh - 90px);overflow-y:auto;font-size:11px!important;line-height:1.6;padding-right:10px;gap:15px!important}.rfc-article{max-width:none}.rfc-article>h1{font-size:32px;overflow-wrap:anywhere}.rfc-source-links{display:flex;flex-wrap:wrap;gap:22px;margin-block:22px;font-size:11px}.rfc-body{margin-top:35px;font-size:13px;line-height:1.9;min-width:0}.rfc-body h2{margin:48px 0 20px;padding-top:20px;border-top:1px solid var(--line);font-size:24px}.rfc-body h3{margin:33px 0 15px;font-size:17px}.rfc-body h4{font-size:14px;margin:27px 0 12px}.rfc-body p{margin:15px 0;color:#616e5b;overflow-wrap:anywhere}.rfc-body li{margin-block:7px;color:#616e5b}.rfc-body ul,.rfc-body ol{padding-left:23px}.rfc-body blockquote{margin:20px 0;padding:1px 19px;border-left:2px solid #c34c2e;background:#eeece2}.rfc-body hr{border:0;border-top:1px solid var(--line);margin:35px 0}.rfc-table{width:100%;max-width:100%;overflow-x:auto;margin:23px 0}.rfc-table table{border-collapse:collapse;min-width:100%;font-size:11px;line-height:1.8}.rfc-table th{background:#e9ece1;color:#43583b;text-align:left;font-weight:600}.rfc-table td,.rfc-table th{border:1px solid #dce0d2;padding:10px 13px;min-width:95px;vertical-align:top}.rfc-body pre{margin-block:23px;font-size:11px;line-height:1.8;overflow:auto;max-width:100%}.rfc-body :not(pre)>code{font-size:11px;padding:2px 4px;background:#e9ebdf;border-radius:3px;overflow-wrap:anywhere}.diagram-source{border:1px solid #d4dccb;border-radius:4px;margin:24px 0;padding-inline:15px}.diagram-source summary{font-size:11px;padding-block:14px}.diagram-source pre{margin-top:0}.rfc-bottom-link{margin-top:40px}.rfc-index{padding-block:67px 90px;max-width:1050px}.rfc-index h1{font-size:41px;line-height:1.4;margin-top:22px;letter-spacing:-1px}.rfc-index-lede{font-size:14px;line-height:1.9;color:#67745f;margin-top:25px}.rfc-index-list{margin-top:47px;border-top:1px solid var(--line)}.rfc-entry{display:grid;grid-template-columns:170px minmax(0,1fr) 25px;gap:22px;padding:30px 5px;border-bottom:1px solid var(--line);transition:background .2s}.rfc-entry:hover{background:#edeee5}.rfc-entry>.mono{font-size:10px;color:#76876b;padding-top:5px}.rfc-entry h2{font-size:21px;margin-bottom:10px;letter-spacing:-.3px}.rfc-entry p{color:#6a7862;font-size:12px;line-height:1.9}.rfc-status{display:inline-flex;font-size:9px;color:#688457;border:1px solid #cfd9c3;border-radius:3px;padding:4px 7px;margin-top:15px}.rfc-entry-arrow{font-size:20px;color:var(--accent)}.rfc-reading-note{margin-top:44px;max-width:750px}.rfc-reading-note h2{font-size:20px;margin-bottom:19px}.rfc-reading-note p{font-size:12px;line-height:1.9;color:#6a7862;margin-block:13px}@media(max-width:760px){.rfc-layout{grid-template-columns:1fr;gap:25px}.rfc-toc .back-link{margin-bottom:18px}.rfc-toc-nav{position:static;max-height:150px;flex-direction:row!important;gap:12px 18px!important}.rfc-article>h1{font-size:27px}.rfc-source-links{font-size:10px;gap:18px}.rfc-body h2{font-size:22px;margin-top:36px}.rfc-table td,.rfc-table th{padding:9px 11px}.rfc-index h1{font-size:34px}.rfc-index-lede{font-size:13px}.rfc-index-lede br{display:none}.rfc-entry{grid-template-columns:1fr 20px;gap:12px;padding:25px 3px}.rfc-entry>.mono{grid-column:1}.rfc-entry>div{grid-column:1}.rfc-entry-arrow{grid-column:2;grid-row:1/3;align-self:center}.rfc-entry h2{font-size:19px}.rfc-index{padding-block:43px 65px}}