:root{
--ink:#141516;--paper:#F3F0E8;--white:#FFFFFF;--tech-grey:#D7D5CE;--graphite:#6B6D6D;--signal-orange:#FF6038;--signal-text:#B93618;
--sidebar:272px;
}
*{box-sizing:border-box}
html{background:var(--paper);color:var(--ink);font-family:"IBM Plex Sans",Arial,sans-serif}
body{margin:0;min-height:100vh;background:var(--paper)}
a{color:inherit}
button,input,select{font:inherit}
button{cursor:pointer}
.skip-link{position:fixed;left:10px;top:-100px;z-index:100;background:var(--ink);color:var(--white);padding:10px}
.skip-link:focus{top:10px}
.visually-hidden{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}
.mono,.page-reference,.system-label,.meta-label,.status-text{font-family:"IBM Plex Mono",monospace}
.system-label,.meta-label{font-size:11px;letter-spacing:.08em;color:var(--graphite)}
.wordmark{text-decoration:none;display:flex;align-items:center;font-weight:600;letter-spacing:-.03em;font-size:22px}
.wordmark i{font-style:normal;color:var(--signal-orange);margin:0 3px}
.workspace-name{font:11px "IBM Plex Mono",monospace;letter-spacing:.12em;color:var(--graphite);margin-top:5px}
.runbook-shell{display:grid;grid-template-columns:var(--sidebar) minmax(0,1fr);min-height:100vh}
.runbook-sidebar{position:sticky;top:0;height:100vh;border-right:1px solid var(--tech-grey);padding:26px 24px;display:flex;flex-direction:column;background:var(--paper);overflow-y:auto}
.brand-block{padding-bottom:28px;border-bottom:1px solid var(--tech-grey)}
.sidebar-nav{padding:22px 0;display:grid;gap:2px}
.sidebar-nav a{position:relative;text-decoration:none;padding:10px 12px 10px 0;color:var(--graphite);font-size:14px}
.sidebar-nav a:hover,.sidebar-nav a.is-active{color:var(--ink)}
.sidebar-nav a.is-active i{position:absolute;left:-24px;top:10px;width:3px;height:18px;background:var(--signal-orange)}
.sidebar-foot{margin-top:auto;border-top:1px solid var(--tech-grey);padding-top:18px;display:grid;gap:7px;font-size:12px}
.sidebar-foot strong{font-size:14px}
.sidebar-foot small{color:var(--graphite);word-break:break-all}
.sidebar-foot a,.text-action{color:var(--signal-text);text-decoration:none;background:none;border:0;padding:0;text-align:left}
.runbook-main{min-width:0}
.runbook-header{height:72px;border-bottom:1px solid var(--tech-grey);display:flex;align-items:center;justify-content:flex-end;padding:0 34px;background:var(--paper);position:sticky;top:0;z-index:10}
.header-state{font-size:11px;color:var(--graphite)}
.nav-toggle,.mobile-wordmark{display:none}
.workspace{max-width:1440px;padding:50px 4vw 90px}
.page-heading{display:grid;grid-template-columns:minmax(0,8fr) minmax(180px,4fr);gap:28px;padding-bottom:36px;border-bottom:1px solid var(--ink)}
.page-heading h1{font-size:clamp(34px,4vw,64px);font-weight:500;letter-spacing:-.045em;line-height:1;margin:7px 0 16px}
.lede{font-size:18px;line-height:1.5;max-width:760px;color:var(--graphite)}
.page-reference{text-align:right;color:var(--graphite);font-size:11px}
.next-step{margin-top:50px;padding:30px 0;border-top:3px solid var(--signal-orange);border-bottom:1px solid var(--tech-grey);max-width:900px}
.next-step h2,.section-heading h2,.security-section h2,.danger-zone h2{font-size:24px;font-weight:500;margin:8px 0 10px;letter-spacing:-.02em}
.next-step p:last-child{color:var(--graphite);line-height:1.55}
.split-register{display:grid;grid-template-columns:2fr 1fr;gap:54px;margin-top:60px}
.section-heading{display:flex;justify-content:space-between;align-items:flex-end;gap:18px;padding-bottom:14px}
.timeline{border-top:1px solid var(--tech-grey)}
.timeline-row{display:grid;grid-template-columns:20px 1fr;gap:14px;min-height:72px;padding:15px 0;border-bottom:1px solid var(--tech-grey);position:relative}
.timeline-mark{width:9px;height:9px;border:1px solid var(--graphite);margin-top:7px;background:var(--paper)}
.timeline-mark.is-current{background:var(--signal-orange);border-color:var(--signal-orange)}
.timeline-row div{display:grid;gap:5px}
.timeline-row .mono{font-size:11px;color:var(--graphite)}
.line-register{border-top:1px solid var(--tech-grey)}
.register-line{display:grid;grid-template-columns:150px minmax(0,1fr) auto;gap:18px;align-items:center;min-height:60px;border-bottom:1px solid var(--tech-grey);font-size:13px}
.register-line .mono{color:var(--graphite);font-size:11px}
.landmark-line{grid-template-columns:150px 1fr}
.landmark-line p{margin:5px 0;color:var(--graphite)}
.activity-section,.security-section,.privacy-register,.danger-zone{margin-top:60px}
.document-form{margin-top:40px}
.document-form section{border-top:1px solid var(--ink);padding-top:20px}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px 34px;margin-top:20px}
label{display:grid;gap:8px}
label>span{font:11px "IBM Plex Mono",monospace;color:var(--graphite);letter-spacing:.05em}
input,select{width:100%;border:1px solid var(--tech-grey);border-radius:2px;padding:12px;background:var(--white);color:var(--ink)}
input:focus,select:focus,button:focus,a:focus{outline:2px solid var(--signal-orange);outline-offset:2px}
label small{color:var(--graphite);line-height:1.4}
.form-actions{margin-top:26px}
.button-primary,.button-secondary{border-radius:2px;padding:11px 16px}
.button-primary{background:var(--ink);color:var(--white);border:1px solid var(--ink)}
.button-secondary{background:var(--white);color:var(--ink);border:1px solid var(--graphite)}
.compact-form{margin-top:0}
.session-line{grid-template-columns:minmax(0,1fr) auto}
.session-line>div:first-child{display:grid;gap:5px}
.status-text{font-size:10px;color:var(--graphite)}
.privacy-register{border-top:1px solid var(--tech-grey)}
.privacy-register>a,.privacy-register>div{display:grid;grid-template-columns:180px 1fr auto;gap:20px;text-decoration:none;padding:18px 0;border-bottom:1px solid var(--tech-grey)}
.privacy-register span{font:11px "IBM Plex Mono",monospace;color:var(--graphite)}
.privacy-register small{grid-column:2;color:var(--graphite)}
.danger-zone{border-top:1px solid var(--ink);padding-top:20px;max-width:850px}
.danger-zone p{color:var(--graphite);line-height:1.5}
.empty-register{margin-top:50px;border-top:1px solid var(--tech-grey);border-bottom:1px solid var(--tech-grey);padding:24px 0;color:var(--graphite)}
.flash{margin:0;padding:13px 4vw;border-bottom:1px solid var(--tech-grey);font-size:13px}
.flash-success{border-left:3px solid var(--ink)}
.flash-error{border-left:3px solid var(--signal-orange)}
.auth-shell{min-height:100vh;display:grid;grid-template-columns:7fr 5fr}
.auth-brand{padding:9vh 7vw;background:var(--paper);display:flex;flex-direction:column;justify-content:flex-end}
.wordmark-large{font-size:30px}
.auth-brand h1{font-size:clamp(40px,5vw,74px);line-height:.98;letter-spacing:-.05em;font-weight:500;max-width:800px;margin:24px 0}
.auth-brand p:last-child{max-width:620px;color:var(--graphite);font-size:18px;line-height:1.5}
.auth-form-wrap{background:var(--white);padding:9vh 7vw;display:flex;flex-direction:column;justify-content:center;border-left:1px solid var(--tech-grey)}
.auth-form-wrap h2{font-size:30px;font-weight:500;margin:8px 0 28px}
.stack-form{display:grid;gap:20px}
.auth-note{margin-top:25px;color:var(--graphite);font-size:12px;line-height:1.5}
.error-page{padding:10vh 8vw}
.nav-backdrop{display:none}
@media(max-width:900px){
.runbook-shell{display:block}
.runbook-sidebar{position:fixed;left:0;top:0;width:min(86vw,310px);transform:translateX(-102%);transition:transform 170ms ease;z-index:50;background:var(--paper)}
.nav-open .runbook-sidebar{transform:translateX(0)}
.nav-backdrop{display:block;position:fixed;inset:0;border:0;background:rgba(20,21,22,.18);opacity:0;visibility:hidden;z-index:40}
.nav-open .nav-backdrop{opacity:1;visibility:visible}
.runbook-header{justify-content:space-between;padding:0 20px}
.nav-toggle{display:flex;align-items:center;gap:4px;border:0;background:none;padding:8px 0}
.nav-toggle span{display:block;width:14px;height:1px;background:var(--ink)}
.nav-toggle b{font:10px "IBM Plex Mono",monospace;margin-left:5px}
.mobile-wordmark{display:flex;text-decoration:none;align-items:center;font-weight:600;gap:2px;font-size:14px}
.mobile-wordmark i{color:var(--signal-orange);font-style:normal}.mobile-wordmark small{margin-left:7px;font:9px "IBM Plex Mono",monospace;color:var(--graphite)}
.workspace{padding:34px 22px 70px}
.page-heading{grid-template-columns:1fr}.page-reference{text-align:left}
.split-register{grid-template-columns:1fr;gap:38px}
.auth-shell{grid-template-columns:1fr}.auth-brand{min-height:42vh;padding:48px 28px}.auth-form-wrap{padding:48px 28px;border-left:0;border-top:1px solid var(--tech-grey)}
}
@media(max-width:620px){
.form-grid{grid-template-columns:1fr}
.register-line{grid-template-columns:105px 1fr;align-items:start;padding:13px 0}
.register-line>*:last-child:not(:nth-child(2)){grid-column:2}
.privacy-register>a,.privacy-register>div{grid-template-columns:1fr auto;gap:6px 14px}
.privacy-register strong,.privacy-register small{grid-column:1}.privacy-register b{grid-column:2;grid-row:1/3}
.page-heading h1{font-size:42px}
}