[hidden]{display:none!important}:root{--paper:#f7f5ee;--ink:#16343a;--muted:#607277;--teal:#1b6f63;--dark:#173f47;--mint:#e8f2ee;--line:#d9ddd7;--gold:#b78a3c}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,"Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--paper);color:var(--ink)}a{color:inherit}.fo-top{height:64px;display:flex;align-items:center;gap:20px;padding:0 24px;border-bottom:1px solid rgba(22,52,58,.12);background:rgba(247,245,238,.96);position:sticky;top:0;z-index:30}.fo-brand{font-weight:800;letter-spacing:.16em;font-size:13px;text-decoration:none}.fo-top .spacer,.reader-top .spacer{flex:1}.fo-link{font-size:13px;text-decoration:none;color:var(--muted)}.btn{border:0;border-radius:9px;padding:12px 18px;font:inherit;font-weight:700;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:8px}.btn.primary{background:var(--dark);color:#fff}.btn.secondary{background:#fff;color:var(--ink);border:1px solid var(--line)}.btn:disabled{opacity:.5;cursor:not-allowed}.hero{max-width:1180px;margin:auto;padding:76px 24px 64px;display:grid;grid-template-columns:1.15fr .85fr;gap:70px;align-items:center}.eyebrow{font:700 11px/1.2 ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.16em;color:var(--teal);text-transform:uppercase}.hero h1{font-size:clamp(42px,6vw,76px);line-height:.98;letter-spacing:-.055em;margin:16px 0 24px}.hero-copy{font-size:18px;line-height:1.8;color:var(--muted)}.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:28px}.book-cover{aspect-ratio:.72;background:#f8f6ef;border:1px solid #dfddd2;box-shadow:0 24px 60px rgba(22,52,58,.12);padding:38px;display:flex;flex-direction:column;position:relative;overflow:hidden}.book-cover:after{content:"";position:absolute;border:1px solid rgba(27,111,99,.18);border-radius:50%;width:340px;height:340px;right:-170px;bottom:-140px}.book-cover .series{font:700 11px ui-monospace,monospace;letter-spacing:.14em;color:var(--teal)}.book-cover h2{font-size:44px;line-height:1.08;letter-spacing:-.04em;margin:90px 0 18px}.book-cover .rule{height:3px;width:92px;background:var(--gold)}.book-cover .foot{margin-top:auto;font:700 11px ui-monospace,monospace}.strip{background:var(--dark);color:#fff}.strip-inner{max-width:1180px;margin:auto;padding:28px 24px;display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.proof strong{display:block;font-size:28px}.proof span{font-size:12px;opacity:.72}.section{max-width:980px;margin:auto;padding:72px 24px}.section h2{font-size:clamp(30px,4vw,50px);letter-spacing:-.04em;margin:10px 0 24px}.section p,.panel p,.shelf-card p{color:var(--muted);line-height:1.8}.preview-card,.panel,.shelf-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:28px}.preview-card p{font-size:16px;line-height:1.9}.decision{background:var(--mint);padding:18px;border-radius:10px;margin-top:18px}.price-note,.message{font-size:12px;color:var(--muted);margin-top:12px}.message.error{color:#a43c2c}.library-shell{max-width:1040px;margin:auto;padding:54px 24px 90px}.library-head{display:flex;justify-content:space-between;gap:20px;margin-bottom:28px}.library-head h1{font-size:40px;margin:6px 0}.auth-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px}.field{width:100%;padding:13px 14px;border:1px solid var(--line);border-radius:9px;font:inherit;background:#fff;margin:10px 0}.shelf{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.shelf-card h3{font-size:24px}.tag{display:inline-block;background:var(--mint);padding:4px 8px;border-radius:999px;font-size:11px;font-weight:700}.reader-body{background:#fbfaf5}.reader-top{height:56px;background:var(--dark);color:#fff;display:flex;align-items:center;gap:12px;padding:0 16px;position:fixed;inset:0 0 auto 0;z-index:50}.reader-top a,.reader-top button{color:#fff;background:none;border:0;font:inherit;text-decoration:none;cursor:pointer}.reader-layout{display:grid;grid-template-columns:280px minmax(0,760px);justify-content:center;gap:48px;padding:88px 24px 100px}.toc{position:sticky;top:76px;align-self:start;max-height:calc(100vh - 96px);overflow:auto;border-right:1px solid var(--line);padding-right:18px}.toc-title{font-size:11px;font-weight:800;letter-spacing:.12em;color:var(--muted);margin-bottom:10px}.toc button{display:block;width:100%;border:0;background:none;text-align:left;padding:9px 8px;border-radius:7px;font:inherit;font-size:13px;color:var(--muted);cursor:pointer}.toc button.active{background:var(--mint);color:var(--ink);font-weight:700}.reader-content h1{font-size:clamp(29px,5vw,42px);line-height:1.18;letter-spacing:-.035em;margin:10px 0 18px}.chapter-meta{font:700 11px ui-monospace,monospace;color:var(--teal);letter-spacing:.08em}.reader-content h2{font-size:20px;margin:30px 0 10px}.reader-content p{font-size:17px;line-height:1.95;color:#344b50;margin:0 0 16px}.reader-content .lead{font-size:18px;color:var(--ink);font-weight:600}.reader-content .decision{margin:30px 0}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;background:var(--dark);padding:16px;border-radius:10px;margin:22px 0}.stat{color:#fff}.stat strong{display:block;color:#f1c66e;font-size:22px}.stat span{font-size:11px;opacity:.78}.reader-table{width:100%;border-collapse:collapse;margin:20px 0;font-size:14px}.reader-table th,.reader-table td{border:1px solid var(--line);padding:10px;vertical-align:top}.reader-table th{background:var(--dark);color:#fff;text-align:left}.reader-actions{display:flex;justify-content:space-between;gap:12px;margin-top:40px;padding-top:24px;border-top:1px solid var(--line)}.appendices{margin-top:44px;padding-top:24px;border-top:1px solid var(--line)}.appendix-row{display:flex;justify-content:space-between;gap:15px;padding:12px 0;border-bottom:1px solid var(--line);align-items:center}.watermark{position:fixed;right:12px;bottom:10px;font:10px ui-monospace,monospace;color:rgba(22,52,58,.28);pointer-events:none}.progress-line{position:fixed;top:56px;left:0;height:2px;background:var(--gold);z-index:51}.loading{padding:80px 20px;text-align:center;color:var(--muted)}
@media(max-width:800px){.hero{grid-template-columns:1fr;padding-top:48px}.book-cover{max-width:420px}.strip-inner{grid-template-columns:1fr 1fr}.auth-grid,.shelf{grid-template-columns:1fr}.reader-layout{display:block;padding:78px 18px 90px}.toc{position:fixed;left:0;top:56px;bottom:0;width:82vw;max-width:320px;max-height:none;background:#fff;z-index:45;padding:18px;transform:translateX(-105%);transition:transform .2s;box-shadow:12px 0 30px rgba(0,0,0,.14)}.toc.open{transform:none}.reader-content p{font-size:16px}.stats{grid-template-columns:1fr}.library-head{flex-direction:column}}

.companion-panel{position:fixed;top:56px;right:0;bottom:0;width:min(420px,38vw);background:#fff;border-left:1px solid var(--line);box-shadow:-18px 0 45px rgba(23,63,71,.1);z-index:46;display:flex;flex-direction:column;transform:translateX(102%);transition:transform .22s ease}.companion-panel.open{transform:none}.companion-head{padding:16px 18px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between}.companion-head small{display:block;font:700 9px ui-monospace,monospace;letter-spacing:.13em;color:var(--teal)}.companion-head strong{display:block;font-size:18px;margin-top:3px}.companion-head button{border:0;background:none;font-size:24px;color:var(--muted);cursor:pointer}.companion-context{padding:13px 18px;background:var(--mint);border-bottom:1px solid #d7e4de}.companion-context span{font-size:11px;font-weight:800;text-transform:uppercase;letter-spacing:.1em}.companion-context p{margin:5px 0 0;font-size:12px;line-height:1.5;color:#52666a}.companion-messages{flex:1;overflow:auto;padding:16px 18px;display:flex;flex-direction:column;gap:10px}.companion-message{max-width:90%;padding:11px 13px;border-radius:12px;font-size:13px;line-height:1.6;white-space:pre-wrap}.companion-message.user{align-self:flex-end;background:var(--dark);color:#fff;border-bottom-right-radius:4px}.companion-message.assistant{align-self:flex-start;background:#f6f5f0;color:#344b50;border-bottom-left-radius:4px}.companion-empty{font-size:13px;line-height:1.6;color:var(--muted);padding:8px 0}.companion-survey{margin:0 18px 10px;border:1px solid #cfdcd6;border-radius:12px;background:#fbfdfb;padding:14px}.companion-survey small{font:700 9px ui-monospace,monospace;color:var(--teal);letter-spacing:.1em}.companion-survey p{font-size:13px;line-height:1.5;margin:7px 0 10px}.companion-options{display:flex;gap:6px;flex-wrap:wrap}.companion-options button{border:1px solid #d4dcd7;background:#fff;border-radius:999px;padding:7px 9px;font:inherit;font-size:11px;cursor:pointer;color:var(--ink)}.companion-options button.selected{background:var(--dark);color:#fff;border-color:var(--dark)}.companion-survey textarea{width:100%;border:1px solid var(--line);border-radius:8px;padding:9px;font:inherit;font-size:12px;resize:vertical}.companion-survey .save-context{margin-top:8px;border:0;background:var(--dark);color:#fff;border-radius:8px;padding:8px 10px;font:inherit;font-size:11px;font-weight:700;cursor:pointer}.companion-compose{padding:12px 14px;border-top:1px solid var(--line);display:flex;gap:8px;background:#fff}.companion-compose textarea{flex:1;border:1px solid var(--line);border-radius:10px;padding:10px 11px;font:inherit;font-size:13px;resize:none;outline:none}.companion-compose textarea:focus{border-color:var(--teal)}.companion-compose button{width:40px;border:0;border-radius:10px;background:var(--dark);color:#fff;font-size:18px;cursor:pointer}.companion-loading{font-size:12px;color:var(--muted);padding:4px 0}
body.companion-open .reader-layout{margin-right:min(420px,38vw)}
@media(max-width:900px){.companion-panel{width:min(92vw,420px)}body.companion-open .reader-layout{margin-right:0}}
@media(max-width:800px){.companion-panel{top:auto;height:74vh;width:100%;max-width:none;border-left:0;border-top:1px solid var(--line);transform:translateY(102%)}.companion-panel.open{transform:none}.reader-top #consultBtn{display:none}}

.reader-top .companion-top-cta{display:inline-flex;align-items:center;gap:7px;background:rgba(255,255,255,.11);border:1px solid rgba(255,255,255,.28);border-radius:999px;padding:7px 12px;font-weight:700;transition:background .16s,border-color .16s}.reader-top .companion-top-cta:hover{background:rgba(255,255,255,.18);border-color:rgba(255,255,255,.42)}.reader-top .companion-top-cta span{color:#f0c66d}
.toc{width:250px}.reader-layout{grid-template-columns:250px minmax(0,740px);gap:44px}
.decision-discuss{margin-top:12px;border:0;background:transparent;color:var(--teal);font:700 12px/1.4 inherit;padding:4px 0;cursor:pointer;display:inline-flex;align-items:center}.decision-discuss:hover{text-decoration:underline;text-underline-offset:3px}
.companion-chapter{display:block;margin-top:5px;font-size:11px;line-height:1.35;color:var(--muted);max-width:310px}
.companion-starters{display:flex;flex-wrap:wrap;gap:7px;padding-top:4px}.companion-starters button{border:1px solid #d7dfda;background:#fff;color:var(--ink);border-radius:999px;padding:8px 10px;font:inherit;font-size:11px;cursor:pointer}.companion-starters button:hover{background:var(--mint);border-color:#bfd4ca}
body.companion-open .reader-layout{grid-template-columns:220px minmax(0,700px);gap:36px;margin-right:min(420px,38vw)}
@media(max-width:1100px){.reader-layout{grid-template-columns:230px minmax(0,700px);gap:34px}}
@media(max-width:900px){body.companion-open .reader-layout{margin-right:0;grid-template-columns:230px minmax(0,700px)}}
@media(max-width:800px){.reader-top .companion-top-cta{padding:6px 10px}.reader-top .companion-top-cta{font-size:12px}.reader-layout{display:block}.toc{width:82vw}}

.purchase-stage{position:relative;margin-top:18px;min-height:690px;border:1px solid var(--line);border-radius:18px;overflow:hidden;background:#fbfaf5;box-shadow:0 24px 60px rgba(22,52,58,.08)}
.purchase-reader-preview{position:absolute;inset:0;background:#fbfaf5;color:var(--ink);filter:blur(1.8px);transform:scale(1.012);transform-origin:center;opacity:.78}
.purchase-preview-top{height:54px;background:var(--dark);color:#fff;display:flex;justify-content:space-between;align-items:center;padding:0 22px;font-size:12px;font-weight:700}
.purchase-preview-layout{display:grid;grid-template-columns:270px minmax(0,1fr);gap:44px;max-width:1020px;margin:0 auto;padding:34px 28px 70px}
.purchase-preview-toc{display:flex;flex-direction:column;gap:4px;border-right:1px solid var(--line);padding-right:18px}
.purchase-preview-toc small{font-size:10px;font-weight:800;letter-spacing:.12em;color:var(--muted);margin-bottom:8px}.purchase-preview-toc span,.purchase-preview-toc b{font-size:12px;line-height:1.45;padding:7px 8px;border-radius:7px;color:#617176;font-weight:500}.purchase-preview-toc b{background:var(--mint);color:var(--ink);font-weight:700}
.purchase-preview-page{max-width:650px}.purchase-preview-page small{font:700 10px ui-monospace,monospace;color:var(--teal);letter-spacing:.08em}.purchase-preview-page h2{font-size:34px;letter-spacing:-.035em;margin:10px 0 24px}.purchase-preview-page h3{font-size:20px;margin:28px 0 10px}.purchase-preview-page p{font-size:16px;line-height:1.95;color:#3f5459}.purchase-preview-note{margin-top:26px;background:var(--mint);padding:18px;border-radius:10px;font-size:14px;line-height:1.65}
.purchase-veil{position:absolute;inset:0;background:linear-gradient(180deg,rgba(247,245,238,.18),rgba(247,245,238,.5));backdrop-filter:blur(2.5px)}
.purchase-gate{position:relative;z-index:2;width:min(520px,calc(100% - 36px));margin:72px auto;background:rgba(255,255,255,.96);border:1px solid rgba(22,52,58,.14);border-radius:18px;padding:34px 36px;box-shadow:0 30px 80px rgba(22,52,58,.22)}
.purchase-gate h2{font-size:34px;letter-spacing:-.04em;margin:10px 0 10px}.purchase-subtitle{font-size:15px;line-height:1.7;color:var(--muted);margin:0 0 20px}.purchase-price{display:flex;align-items:baseline;gap:12px;padding:18px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.purchase-price strong{font-size:32px;letter-spacing:-.04em}.purchase-price span{font-size:12px;color:var(--muted)}
.purchase-benefits{margin:20px 0;padding:0;list-style:none;display:grid;gap:9px}.purchase-benefits li{font-size:13px;color:#40565a}.purchase-benefits li:before{content:"✓";display:inline-block;margin-right:9px;color:var(--teal);font-weight:800}
.purchase-license{background:var(--mint);border-radius:10px;padding:11px 13px;font-size:12px;line-height:1.5;color:#4b6266;margin:18px 0}.purchase-license strong{color:var(--ink)}
.purchase-actions{display:flex;gap:10px;flex-wrap:wrap}.purchase-main-btn{min-width:180px}.purchase-gate .message{min-height:16px}
@media(max-width:800px){.purchase-stage{min-height:650px}.purchase-preview-layout{grid-template-columns:180px 1fr;gap:18px;padding:24px 16px}.purchase-preview-toc span,.purchase-preview-toc b{font-size:10px}.purchase-preview-page h2{font-size:26px}.purchase-preview-page p{font-size:13px}.purchase-gate{margin:48px auto;padding:26px 24px}.purchase-gate h2{font-size:29px}}
@media(max-width:560px){.purchase-preview-toc{display:none}.purchase-preview-layout{display:block}.purchase-gate{margin:34px auto}.purchase-actions{display:grid}.purchase-actions .btn{width:100%}}

.library-access-loading{min-height:calc(100vh - 64px);display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:48px 24px;background:var(--paper)}
.fo-access-mark{width:86px;height:86px;border-radius:24px;background:#fff;border:1px solid rgba(22,52,58,.12);box-shadow:0 18px 50px rgba(22,52,58,.10);display:flex;align-items:flex-end;justify-content:center;gap:1px;margin-bottom:24px;font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-weight:900;font-size:52px;line-height:.95;letter-spacing:-.10em;color:#0e5aa7;padding:0 7px 13px 0}
.fo-access-mark span:last-child{color:#144a72}
.library-access-loading h1{font-size:28px;letter-spacing:-.035em;margin:10px 0 8px}
.library-access-loading p{margin:0;color:var(--muted);font-size:14px}
.access-loader{width:28px;height:28px;border:2px solid rgba(22,52,58,.14);border-top-color:var(--teal);border-radius:50%;margin-top:24px;animation:librarySpin .8s linear infinite}
@keyframes librarySpin{to{transform:rotate(360deg)}}
@media(max-width:600px){.fo-access-mark{width:74px;height:74px;font-size:45px;border-radius:20px}.library-access-loading h1{font-size:24px}}

.account-trigger{border:1px solid rgba(22,52,58,.16);background:#fff;color:var(--ink);border-radius:999px;padding:8px 13px;font:700 12px/1 Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;cursor:pointer}
.checkout-success{display:flex;flex-direction:column;gap:4px;background:var(--mint);border:1px solid rgba(27,111,99,.2);padding:16px 18px;border-radius:12px;margin:0 0 18px}.checkout-success strong{font-size:14px}.checkout-success span{font-size:12px;color:var(--muted)}
body.account-open{overflow:hidden}.account-backdrop{position:fixed;inset:0;background:rgba(10,29,33,.34);backdrop-filter:blur(2px);z-index:80}.account-panel{position:fixed;right:18px;top:18px;bottom:18px;width:min(420px,calc(100vw - 36px));background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:0 28px 80px rgba(22,52,58,.24);z-index:81;padding:24px;overflow:auto}.account-head{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;border-bottom:1px solid var(--line);padding-bottom:18px}.account-head h2{margin:5px 0 0;font-size:30px;letter-spacing:-.04em}.account-head button{border:0;background:transparent;font-size:28px;line-height:1;cursor:pointer;color:var(--muted)}.account-identity{display:flex;align-items:center;gap:12px;padding:22px 0}.account-avatar{width:42px;height:42px;border-radius:50%;display:grid;place-items:center;background:var(--dark);color:#fff;font-weight:800}.account-identity strong,.account-identity span{display:block}.account-identity strong{font-size:14px}.account-identity span{font-size:12px;color:var(--muted);margin-top:3px}.account-section{border-top:1px solid var(--line);padding-top:18px}.account-section>small{font:700 10px ui-monospace,monospace;letter-spacing:.12em;color:var(--muted)}.account-purchase{padding:16px 0;border-bottom:1px solid var(--line)}.account-purchase strong,.account-purchase span{display:block}.account-purchase strong{font-size:14px;line-height:1.45}.account-purchase span{font-size:12px;color:var(--muted);margin-top:4px}.account-purchase-actions{display:flex;gap:14px;margin-top:10px}.account-link{border:0;background:none;padding:0;color:var(--teal);font:700 12px Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;cursor:pointer;text-decoration:none}.account-link:disabled{opacity:.5}.account-logout{width:100%;margin-top:22px}
@media(max-width:600px){.fo-top{gap:10px;padding:0 14px}.fo-top .fo-link{display:none}.account-panel{right:0;top:0;bottom:0;width:100%;max-width:none;border-radius:0;border:0}}