/* R2 exploration only: keep the approved R1 entrance styling unchanged. */
body:not([data-mode="arrival"]) .exploration{max-width:1400px;margin:0 auto}
body:not([data-mode="arrival"]) .section-nav{max-width:none;gap:clamp(18px,3vw,42px);overflow-x:auto;scrollbar-width:thin;scrollbar-color:#668ba0 transparent;padding-top:14px}
body:not([data-mode="arrival"]) .story{max-width:740px;min-height:0;padding-top:68px;padding-bottom:64px}
body:not([data-mode="arrival"]) .story-copy{max-width:650px}
.chapter{max-width:1100px;background:linear-gradient(125deg,#0a151ef2,#0a151edb);border-top:1px solid #9ad8fb55;border-bottom:1px solid #9ad8fb33;padding:42px clamp(24px,4vw,54px);backdrop-filter:blur(18px)}
.chapter h2{font-size:clamp(25px,2.5vw,35px);font-weight:400;letter-spacing:-.025em;line-height:1.2;text-wrap:balance;margin:0}
.chapter h3{font-size:20px;line-height:1.35;font-weight:450;letter-spacing:-.015em;margin:0 0 12px}
.chapter p{color:#c6d2da;font-size:15px;line-height:1.8;margin:0 0 16px;font-weight:350}
.section-heading{display:flex;align-items:baseline;gap:22px;margin:0 0 28px}
.section-heading>span{color:#7dbbdd;font-size:10px;letter-spacing:.15em;flex:0 0 34px}
.section-heading:not(:first-child){margin-top:55px}
.section-lead{max-width:730px}
.value-rows>article{display:grid;grid-template-columns:34px 1fr;gap:22px;border-top:1px solid #aacbdf25;padding:25px 0}
.value-rows p{max-width:690px}
.row-index{color:#7496a9;font-size:11px;padding-top:5px;letter-spacing:.1em}
.inline-link{border:0;background:none;padding:4px 0;color:#a5ddfa;font-size:13px;line-height:1.6;text-align:left}
.inline-link:hover{text-decoration:underline;text-underline-offset:5px}
.statement{border-left:1px solid #89cfff;padding:5px 0 5px 26px;margin:35px 0 8px;max-width:720px}
.statement>p{font-size:clamp(30px,3.5vw,46px);line-height:1.2;font-weight:350;letter-spacing:-.03em;color:#edf5f8;margin:0 0 20px;text-wrap:balance}
.statement>span:last-child,.athena-introduction>span:last-child,.athena-reservation>span:last-child{font-size:13px;line-height:1.8;color:#a7bfcd}
.context-example,.split-story{display:grid;grid-template-columns:1fr 1fr;gap:36px;margin:24px 0}
.permission-projection{padding:25px;border:1px solid #9cd7fa35;background:#152c3a66}
.projection-label{display:block;color:#92c5df;font-size:9px;letter-spacing:.13em;line-height:1.6;margin-bottom:12px}
.permission-projection p{font-size:14px}
.permission-projection hr{border:0;border-top:1px solid #bce1f333;margin:22px 0}
.principle-list{margin:30px 0;display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.principle-list article{border-top:1px solid #8dbed344;padding-top:22px}
.principle-list h3{font-size:18px}.principle-list p{font-size:14px}
.stop-principle{border-color:#efb79a66!important}
.chapter .quiet-caption{font-size:12px;line-height:1.8;color:#93aebb;max-width:790px;margin:24px 0 0}
.choice-strip{display:flex;flex-wrap:wrap;gap:6px;margin:28px 0 0;border-bottom:1px solid #80adc044}
.choice-strip button{border:0;border-bottom:2px solid transparent;background:transparent;padding:13px 15px;color:#a5bac6;font-size:12px}
.choice-strip button[aria-pressed="true"]{color:#edf7ff;border-bottom-color:#8cd5ff;background:#78c5ed0c}
.detail-surface{padding:27px 28px;background:linear-gradient(110deg,#24465a44,#18304022);border-left:1px solid #8cd5ff;min-height:170px}
.detail-surface .eyebrow{font-size:9px;margin-bottom:14px}.detail-surface p{margin-bottom:0;max-width:770px}
.reading-room{border-top:1px solid #aac9da35}.reading-room:last-child{border-bottom:1px solid #aac9da35}
.reading-room summary{list-style:none;display:flex;justify-content:space-between;gap:24px;padding:22px 0;font-size:16px;line-height:1.5;cursor:pointer}
.reading-room summary::-webkit-details-marker{display:none}.reading-room summary span{color:#8cd5ff;font-size:22px;line-height:1}
.reading-room summary:focus-visible{outline:2px solid #8cd5ff;outline-offset:3px}.reading-room[open] summary span{transform:rotate(45deg)}
.reading-room>div{max-width:780px;padding:0 0 18px}
.system-map{border:1px solid #8ab9d035;background:linear-gradient(145deg,#1734474d,#0c1d2966);padding:28px;text-align:center}
.authority-band{border-bottom:1px solid #d2ba8f55;padding:4px 12px 20px}
.authority-band>span{font-size:10px;color:#e0ceaf;letter-spacing:.17em}.authority-band>p{font-size:13px;margin:8px 0 0;color:#b8c5ce}
.map-connector{display:flex;justify-content:center;align-items:center;gap:12px;color:#96c8e1;margin:14px 0;font-size:21px}
.map-connector span{font-size:10px;color:#90acbd;line-height:1.5;max-width:245px;text-align:left}
.system-map button{border:1px solid #8fc3df44;background:#132d3d80;padding:16px;color:#d8e9f2;font-size:13px;line-height:1.5;transition:background .2s,border-color .2s;min-width:0}
.system-map button:hover,.system-map button[aria-pressed="true"]{border-color:#89d4ff;background:#29638644}
.system-map small{display:block;font-size:10px;font-weight:350;line-height:1.6;color:#97b6c8;margin-top:7px}
.intake-pair,.oversight-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}.intake-pair{max-width:490px;margin:auto}
.system-map .dispatch-node{width:min(100%,600px);padding:22px}.dispatch-node>span{letter-spacing:.18em;font-size:13px}
.worker-nodes{display:grid;grid-template-columns:repeat(3,1fr);gap:9px}.worker-nodes>button:last-child{grid-column:2}
.oversight-row{border-top:1px dashed #8fc3df55;padding-top:20px;margin-top:22px}
.chapter .map-key{font-size:11px;line-height:1.7;color:#91acbc;margin:20px auto 0;max-width:650px}
.role-detail{margin-top:18px;min-height:190px}
.sequence{list-style:none;margin:25px 0 0;padding:0}.sequence li{display:grid;grid-template-columns:34px 1fr;gap:22px;position:relative;padding:0 0 28px}
.sequence li>span{color:#91c7e4;font-size:11px;padding-top:5px}.sequence li:not(:last-child):before{content:"";position:absolute;top:30px;bottom:11px;left:6px;border-left:1px solid #7cb3d04d}.sequence p{max-width:750px}
.bridge-flow{display:grid;grid-template-columns:1fr 30px 1fr 30px 1fr;align-items:start;gap:12px;margin:36px 0}
.bridge-flow article{border-top:1px solid #9bd2ed66;padding-top:23px}
.bridge-flow article>span,.roadmap-line article>span{font-size:9px;letter-spacing:.12em;color:#8cb6ce;display:block;line-height:1.7;margin-bottom:18px}
.bridge-flow h3{font-size:18px}.bridge-flow p{font-size:13px}.flow-direction{padding-top:21px;color:#9fceea;font-size:22px;text-align:center}
.roadmap-line{padding-left:24px;margin:32px 0;border-left:1px solid #8fd5ff55}.roadmap-line article{position:relative;padding:0 0 28px 10px}
.roadmap-line article:before{content:"";position:absolute;left:-28px;top:4px;width:7px;height:7px;border-radius:50%;background:#9ad5f6;box-shadow:0 0 12px #8fd5ff33}
.roadmap-line article>span{margin-bottom:9px}.roadmap-line article:last-child{padding-bottom:0}
.athena-introduction{margin:0 0 45px}.athena-introduction blockquote{font-size:clamp(23px,2.9vw,35px);font-weight:350;letter-spacing:-.02em;line-height:1.55;margin:0 0 25px;max-width:880px}
.athena-reservation{border-top:1px solid #8fc3df44;padding-top:36px;margin-top:35px}.athena-reservation .fine-line{display:block;margin-bottom:20px}
.athena-reservation p{font-size:25px;color:#e5f0f6;line-height:1.35}.athena-reservation strong{font-weight:350;color:#9fcbe3}
.chapter-next{display:block;border:0;border-bottom:1px solid #83b1cb66;background:none;font-size:14px;line-height:1.7;color:#b1dff6;text-align:left;padding:20px 0;margin-top:22px}
body:not([data-mode="arrival"]) .mode-dock{max-width:1100px}
@media(min-width:1100px){body:not([data-mode="arrival"]) .shade{background:linear-gradient(90deg,#051019e8,#05101970 65%,#05101925)}}
@media(max-width:760px){
 body:not([data-mode="arrival"]) .story{padding-top:48px;padding-bottom:42px}
 body:not([data-mode="arrival"]) .story h1{font-size:clamp(38px,8vw,54px)}
 .chapter{padding:28px 20px}.section-heading{gap:12px}.section-heading>span{flex-basis:27px;font-size:9px}
 .section-heading:not(:first-child){margin-top:38px}.chapter h2{font-size:26px}
 .context-example,.split-story,.principle-list{grid-template-columns:1fr;gap:20px}.principle-list{margin-bottom:24px}
 .value-rows>article,.sequence li{grid-template-columns:22px 1fr;gap:14px}.value-rows h3{font-size:21px}
 .statement{padding-left:18px}.chapter .eyebrow{font-size:8px}
 .choice-strip{gap:0}.choice-strip button{font-size:11px;padding:12px 9px}.detail-surface{padding:23px 18px}
 .system-map{padding:20px 12px}.system-map button{padding:13px 8px;font-size:12px}
 .worker-nodes{grid-template-columns:1fr 1fr}.worker-nodes>button:last-child{grid-column:1/-1}.oversight-row{grid-template-columns:1fr}
 .map-connector span{font-size:9px;max-width:180px}.authority-band>span{font-size:8px}
 .bridge-flow{grid-template-columns:1fr;gap:2px}.flow-direction{transform:rotate(90deg);padding:0}
 .bridge-flow article{padding-top:20px}.bridge-flow p{font-size:14px}.bridge-flow article>span{margin-bottom:12px}
 .chapter-next{font-size:12px}
}

/* R3: explain the common shell, historical FT1 evidence and testing method. */
.shell-stack{max-width:830px;margin:34px 0}
.shell-layer{padding:27px 30px;border:1px solid #91bfd333;background:#15283566}
.shell-layer>span{color:#96c9e5;letter-spacing:.16em;font-size:9px;display:block;margin-bottom:12px}
.shell-layer h3{font-size:25px}.shell-layer p{margin:0;max-width:700px}
/* Static diagram: all layers share a neutral treatment, with no selected state. */
.shell-join{font-size:24px;line-height:1.6;text-align:center;color:#8cb5cd}
.proof-numbers{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid #8dcaf05c;border-bottom:1px solid #8dcaf035;margin:30px 0 0}
.proof-numbers>div{padding:25px 18px 28px 0}.proof-numbers dt{font-size:11px;line-height:1.7;color:#adc5d2}
.proof-numbers dd{font-size:clamp(30px,4.3vw,51px);letter-spacing:-.04em;font-weight:300;margin:11px 0 0;color:#edf6ff}
.proof-numbers dd span{font-size:.45em;color:#8eaec0;letter-spacing:0;margin-left:3px}
.pressure-console{margin:30px 0 34px;padding:25px;border:1px solid #8fc6e342;background:#0a172455}
.pressure-console .choice-strip{margin-top:10px}.pressure-detail{min-height:205px}
.qualification-layers{padding-left:23px;margin:20px 0;color:#b9ced9;font-size:14px;line-height:1.8}
.qualification-layers li{padding:0 0 13px 6px}.qualification-layers strong{color:#e2eff7;font-weight:450}
.chapter .reading-room strong{color:#e0edf4;font-weight:500}
.testing-close{margin-top:42px;border-top:1px solid #89cfff77;padding-top:32px}
.testing-close h2{margin-bottom:24px}.testing-close p{max-width:760px}
@media(max-width:760px){.shell-layer{padding:22px 18px}.shell-layer h3{font-size:23px}.pressure-console{padding:20px 12px}.pressure-console .choice-strip button{padding:12px 8px}.pressure-detail{min-height:0}.proof-numbers{grid-template-columns:1fr}.proof-numbers>div{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 0}.proof-numbers>div+div{border-top:1px solid #8dcaf022}.proof-numbers dd{margin:0;font-size:39px}.proof-numbers dt{font-size:12px}}

/* R4 additions: neutral information surfaces; interactive cues stay on controls. */
.authority-envelope{margin:30px 0;border:1px solid #91bfd333;background:#15283544}
.envelope-title{padding:27px 30px 4px}
.envelope-title h3{font-size:clamp(25px,3vw,34px);letter-spacing:-.025em}
.envelope-title .eyebrow{font-size:9px}
.boundary-grid{display:grid;grid-template-columns:repeat(2,1fr);margin:8px 30px 0;gap:0 32px}
.boundary-grid>div{padding:19px 0;border-top:1px solid #91bfd333}
.boundary-grid dt{font-size:13px;color:#d6e5ed;margin-bottom:8px}
.boundary-grid dd{font-size:13px;line-height:1.7;color:#a9bfcc;margin:0}
.chapter .envelope-foot{border-top:1px solid #91bfd333;margin:0;padding:20px 30px;font-size:13px}
.architecture-principles{display:grid;grid-template-columns:1fr 1fr;gap:28px 34px;margin:30px 0 40px}
.architecture-principles article{border-top:1px solid #8dbed344;padding-top:22px}
.architecture-principles article>span,.checkpoint-chain li>span,.balance-cycle li>span{display:block;font-size:9px;letter-spacing:.12em;color:#8cb6ce;line-height:1.7;margin-bottom:15px}
.architecture-principles p{font-size:14px}
.checkpoint-chain,.balance-cycle{list-style:none;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin:32px 0}
.checkpoint-chain li,.balance-cycle li{border-top:1px solid #8dbed344;padding-top:24px}
.checkpoint-chain h3,.balance-cycle h3{font-size:20px}
.checkpoint-chain p,.balance-cycle p{font-size:14px}
.chapter .recovery-heading{margin-top:40px;font-size:23px}
@media(max-width:760px){
 .envelope-title{padding:23px 18px 2px}.boundary-grid{margin:8px 18px 0;grid-template-columns:1fr}
 .chapter .envelope-foot{padding:20px 18px}.architecture-principles,.checkpoint-chain,.balance-cycle{grid-template-columns:1fr;gap:20px}
}

/* R5: static capacity diagram, with distinct interactive scenario controls. */
.scale-map{margin:30px 0;padding:28px;border:1px solid #91bfd333;background:#15283544}
.scale-ceiling{padding-bottom:20px;border-bottom:1px solid #91bfd333}
.scale-ceiling h3{font-size:28px}.scale-ceiling p{font-size:13px;margin-bottom:0}
.scale-ceiling .eyebrow{font-size:9px}
.scale-dispatch{padding:24px 0 0}.scale-dispatch>p{margin:16px 0 0;text-align:center;font-size:12px;color:#a9bfcc}
.scale-pair{display:grid;grid-template-columns:1fr 1fr;gap:15px}
.scale-pair>div{border:1px solid #91bfd333;padding:20px}
.scale-pair strong{display:block;font-size:16px;font-weight:450;color:#e0edf4;line-height:1.5}
.scale-pair span{display:block;font-size:12px;color:#a9bfcc;line-height:1.8;margin-top:8px}
.scale-map .map-connector{margin:18px 0}.scale-map .map-connector span{text-align:center;max-width:none}
.capacity-console{margin:30px 0 38px;padding:25px;border:1px solid #8fc6e342;background:#0a172455}
.capacity-console .choice-strip{margin-top:10px}.capacity-console .detail-surface{min-height:210px}
@media(max-width:760px){.scale-map{padding:22px 16px}.scale-pair{grid-template-columns:1fr;gap:12px}.scale-pair>div{padding:18px 15px}.scale-ceiling h3{font-size:25px}.capacity-console{padding:20px 12px}.capacity-console .detail-surface{min-height:0}}


/* R6: industry possibilities and the company-controlled doorway. */
.industry-console{margin:32px 0 24px}
.industry-detail{margin-top:18px}
.industry-boundary{border-top:1px solid rgba(162,200,216,.2);padding-top:20px;margin-top:24px!important}
.industry-boundary strong{color:#e2edf2;font-weight:500}
.company-boundary-map{margin:36px 0 30px;border:1px solid rgba(162,200,216,.28);background:rgba(13,30,40,.45)}
.interface-side{padding:30px}
.company-boundary-map h3{margin:12px 0;font-size:25px;line-height:1.3;font-weight:400}
.company-boundary-map p{margin:0;font-size:15px;line-height:1.85;color:#bdcbd2}
.boundary-exchange{display:grid;grid-template-columns:1fr 1fr;gap:30px;padding:24px 30px;border-top:1px solid rgba(162,200,216,.2);border-bottom:1px solid rgba(162,200,216,.2)}
.boundary-exchange>div{display:flex;gap:17px;align-items:center}
.boundary-exchange>div>span{font-size:30px;color:#8ebed4;line-height:1}
.boundary-exchange strong{display:block;color:#e2edf2;font-weight:400}
.company-side{margin:24px 30px 30px;border:1px solid rgba(162,200,216,.25)}
.company-door,.company-interior{padding:26px}
.company-interior{border-top:1px solid rgba(162,200,216,.2)}
.company-interior p+p{margin-top:14px}
@media(max-width:760px){.interface-side{padding:24px}.boundary-exchange{grid-template-columns:1fr;gap:20px;padding:22px 24px}.company-side{margin:22px 16px}.company-door,.company-interior{padding:22px}.company-boundary-map h3{font-size:23px}}


/* R7: company shell profiles and separated construction/integration. */
.shell-intake,.shell-services{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin:30px 0}
.shell-intake article,.shell-services article{padding:25px 0;border-top:1px solid rgba(162,200,216,.28)}
.shell-intake h3,.shell-services h3{font-size:25px;line-height:1.4;font-weight:400;margin:14px 0}
.shell-intake p,.shell-services p{font-size:15px;line-height:1.85}
.profile-picker{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px;margin:30px 0 18px}
.profile-picker button{min-height:105px;padding:19px 15px;text-align:left;border:1px solid rgba(162,200,216,.26);background:rgba(16,35,46,.35);color:#d5e3eb;cursor:pointer}
.profile-picker button span{display:block;font-size:9px;letter-spacing:.14em;color:#9fc8db;margin-bottom:13px}
.profile-picker button strong{font-size:15px;font-weight:400;line-height:1.5}
.profile-picker button:hover{background:rgba(55,90,114,.24)}
.profile-picker button[aria-pressed=true]{background:rgba(55,99,126,.28);border-color:#84bdd8;box-shadow:inset 0 -2px #84bdd8}
.profile-picker button:focus-visible{outline:2px solid #a7d8ed;outline-offset:4px}
.shell-workspaces{border:1px solid rgba(162,200,216,.28);margin:30px 0}
.shell-workspaces article{padding:28px}
.shell-workspaces h3{font-size:25px;font-weight:400;margin:12px 0}
.shell-workspaces p{font-size:15px;line-height:1.85;margin:0}
.handoff-boundary{padding:22px 28px;border-block:1px solid rgba(162,200,216,.22)}
.handoff-boundary>span{font-size:9px;letter-spacing:.14em;color:#a1c8da}
.handoff-boundary p{margin-top:10px;font-size:14px}
.shell-links{display:flex;flex-wrap:wrap;gap:14px 30px;margin-top:30px}
@media(max-width:760px){.shell-intake,.shell-services{grid-template-columns:1fr;gap:8px}.profile-picker{grid-template-columns:1fr 1fr}.profile-picker button{min-height:95px}.shell-workspaces article,.handoff-boundary{padding:23px}.shell-intake h3,.shell-services h3{font-size:23px}}


.lease-options{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px;margin:36px 0 28px}
.lease-options article{display:flex;flex-direction:column;align-items:flex-start;border-top:1px solid rgba(162,200,216,.28);padding:24px 0 8px}
.lease-options h3{font-size:26px;line-height:1.35;font-weight:400;margin:17px 0 12px}
.lease-options p{font-size:15px;line-height:1.85;margin:0 0 17px}
.lease-options .inline-link{margin-top:auto;padding-top:15px}
.lease-principles{margin-top:36px}
@media(max-width:900px){.lease-options{grid-template-columns:1fr;gap:18px}.lease-options h3{font-size:25px}.lease-options .inline-link{margin-top:0}}


/* R9: a quiet narrative chapter next to the founding vision. */
.founder-story{max-width:780px;margin:0 auto;padding:4px 0 12px}
.chapter .founder-story p{font-size:18px;line-height:1.95;margin:0 0 27px;color:#cbd6dd}
.chapter .founder-story .founder-opening{font-size:25px;line-height:1.6;color:#eef3f5;letter-spacing:-.02em;margin-bottom:35px}
.chapter .founder-story .founder-principle{border-block:1px solid rgba(161,196,214,.25);padding:29px 0;margin:36px 0;font-size:clamp(26px,2.7vw,34px);line-height:1.4;color:#e5f1f6;letter-spacing:-.025em}
.founder-principle strong{font-weight:400}
.founder-shortcut{margin-top:24px}
.story-foot:empty{display:none}
@media(max-width:760px){.chapter .founder-story p{font-size:16px;line-height:1.9}.chapter .founder-story .founder-opening{font-size:22px}.chapter .founder-story .founder-principle{font-size:26px}}