:root{--obsidian:#0b0f14;--obsidian-deep:#060a0f;--sapphire:#0f4c81;--sapphire-deep:#07315a;--ivory:#f4efe3;--parchment:#8d5524;--parchment-warm:#b0723a;--silver:silver;--silver-bright:#e5e5e5;--silver-100:#fafafa;--cyan:#00b4d8;--ink:#3b2a14;--ink-warm:#5c3f1e;--neutral-100:#fafafa;--neutral-700:#3b3f46;--neutral-900:#0e1218;--glass-bg:rgba(15,76,129,.22);--glass-haze:rgba(141,85,36,.15);--glass-blur:32px;--glass-border:1px solid hsla(0,0%,75%,.45);--silver-rim:hsla(0,0%,75%,.6);--silver-glow:0 0 24px hsla(0,0%,90%,.12);--glass-shadow-outer:0 24px 60px -20px rgba(7,49,90,.55);--glass-shadow-inner:inset 0 1px 0 hsla(0,0%,90%,.35);--parchment-opacity:0.05;--display:"Playfair Display","EB Garamond",Garamond,"Times New Roman",serif;--serif:"EB Garamond",Garamond,"Times New Roman",serif;--ui:"Inter",-apple-system,BlinkMacSystemFont,"Segoe 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at 18% 0%,rgba(15,76,129,.42),transparent 36%),radial-gradient(circle at 82% 8%,var(--glass-haze),transparent 30%),linear-gradient(180deg,var(--obsidian) 0%,var(--obsidian-deep) 100%);--shadow-card:var(--glass-shadow-outer),var(--glass-shadow-inner);--shadow-menu:0 18px 42px rgba(6,10,15,.72),var(--glass-shadow-inner);--workspace-rail-bg:rgba(6,10,15,.58);--workspace-page-bg:rgba(6,10,15,.42);--workspace-rule:hsla(0,0%,75%,.2);--timeline-active-bg:rgba(15,76,129,.3);--timeline-line:hsla(0,0%,75%,.3);--skeleton:hsla(0,0%,75%,.1);--proof-bg:rgba(6,10,15,.94);--proof-text:var(--ivory);--proof-muted:var(--silver);--proof-rule:hsla(0,0%,75%,.42);--proof-accent:var(--parchment-warm);--proof-verified:var(--cyan);--proof-glow:var(--glass-shadow-outer),var(--silver-glow);--header-shadow:0 12px 32px -22px rgba(6,10,15,.9)}html{--display:var(--font-display),"EB Garamond",Garamond,"Times New Roman",serif;--serif:var(--font-serif),Garamond,"Times New 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button{padding:0;border:0;background:transparent;color:var(--text-accent);cursor:pointer;font:inherit;font-weight:750}.notebook-select-all{display:inline-flex;align-items:center;gap:var(--space-2);cursor:pointer}.notebook-select-all input,.notebook-timeline__selection input{width:1rem;height:1rem;margin:0;accent-color:var(--accent)}.notebook-timeline{margin:0;padding:0;list-style:none}.notebook-timeline>li{position:relative}.notebook-timeline__month{position:-webkit-sticky;position:sticky;top:4.35rem;z-index:4;margin:0;padding:var(--space-5) var(--space-4) var(--space-2);background:var(--workspace-rail-bg);color:var(--text-muted);font-family:var(--ui);font-size:.68rem;font-weight:750;letter-spacing:.14em;text-transform:uppercase}.notebook-timeline__row-grid{display:grid;grid-template-columns:2rem 2.15rem minmax(0,1fr);align-items:stretch;padding:0 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var(--border);border-radius:var(--radius-pill);font-family:var(--ui);font-size:.62rem;font-weight:800;letter-spacing:.08em;line-height:1.25;text-transform:uppercase}.anchor-badge--pending{border-color:var(--border-warning);background:var(--surface-warning);color:var(--text-warning)}.anchor-badge--base{background:var(--surface-accent-strong);color:var(--text-accent)}.anchor-badge--bitcoin{background:var(--surface-success);color:var(--text-success)}.notebook-timeline-skeleton{display:grid;grid-gap:var(--space-3);gap:var(--space-3);padding:var(--space-5) var(--space-4)}.notebook-timeline-skeleton span{height:4.75rem;border-radius:var(--radius-sm);background:linear-gradient(90deg,var(--skeleton),var(--surface-accent),var(--skeleton));background-size:220% 100%;animation:notebook-shimmer 1.8s linear infinite}@keyframes notebook-shimmer{to{background-position:-220% 0}}.notebook-empty-rail,.notebook-rail--locked,.notebook-rail__notice{display:grid;grid-gap:var(--space-3);gap:var(--space-3);padding:var(--space-8) var(--space-5);color:var(--text-muted);font-size:.82rem;line-height:1.5}.notebook-empty-rail strong,.notebook-rail__notice strong{color:var(--text);font-family:var(--serif);font-size:1.12rem}.notebook-empty-rail__mark{color:var(--text-accent);font-family:var(--display);font-size:2rem}.notebook-rail__notice button{justify-self:start;padding:0;border:0;background:transparent;color:var(--text-accent);cursor:pointer}.notebook-rail__notice--error{color:var(--text-danger)}.notebook-rail--locked{align-content:start;overflow:hidden}.notebook-rail__locked-heading{display:flex;align-items:center;gap:var(--space-3);color:var(--text);font-family:var(--serif);font-size:1.1rem}.notebook-page{width:100%;max-width:74ch;min-height:min(44rem,calc(100svh - 9rem));margin:0 auto}.notebook-session-state{display:grid;max-width:42rem;grid-gap:var(--space-4);gap:var(--space-4);padding:var(--space-6);border-radius:var(--radius-lg)}.notebook-session-state h2,.notebook-session-state p{margin:0}.notebook-page__header{display:flex;justify-content:space-between;gap:var(--space-6);margin-bottom:var(--space-8);padding-bottom:var(--space-5);border-bottom:1px solid var(--workspace-rule)}.notebook-page__header h1,.notebook-unlock h1{margin:0;font-size:clamp(2.35rem,5vw,4.6rem);font-weight:500;letter-spacing:-.045em;line-height:.98}.notebook-page__header p:not(.notebook-eyebrow){max-width:60ch;margin-bottom:0;color:var(--text-muted)}.notebook-eyebrow{margin:0 0 var(--space-2);color:var(--text-accent);font-family:var(--ui);font-size:.68rem;font-weight:800;letter-spacing:.15em;text-transform:uppercase}.notebook-local-state{flex:0 0 auto;align-self:flex-start;color:var(--text-muted);font-family:var(--ui);font-size:.7rem}.notebook-local-state 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[data-testid=entry-body]{font-size:1.08rem;line-height:1.8}.notebook-entry-attachments{padding-top:var(--space-6);border-top:1px solid var(--workspace-rule)}.notebook-entry-attachments h2{margin:0 0 var(--space-3);font-size:1.35rem}.notebook-entry-actions{display:grid;grid-gap:var(--space-4);gap:var(--space-4);padding-top:var(--space-5);border-top:1px solid var(--workspace-rule);color:var(--text-muted);font-family:var(--ui)}.notebook-single-version{max-width:58ch;padding:var(--space-8) 0;color:var(--text-muted)}.notebook-single-version h2{color:var(--text)}.notebook-version-history{display:grid;grid-gap:var(--space-8);gap:var(--space-8)}.notebook-version-history__header{display:flex;align-items:flex-start;justify-content:space-between;gap:var(--space-4);padding-bottom:var(--space-5);border-bottom:1px solid var(--workspace-rule)}.notebook-version-history__header strong{font-family:var(--display);font-size:1.65rem;font-weight:550}.notebook-version-compare>p,.notebook-version-history__header p{margin:var(--space-1) 0 0;color:var(--text-muted);font-family:var(--ui);font-size:.76rem}.notebook-version-badge{display:inline-flex;flex:0 0 auto;align-items:center;padding:.25rem .58rem;border-radius:var(--radius-pill);background:var(--surface-success);color:var(--text-success);font-family:var(--ui);font-size:.66rem;font-weight:800;letter-spacing:.06em;text-transform:uppercase}.notebook-version-list{display:grid;margin:0;padding:0;list-style:none}.notebook-version-list__item{display:grid;grid-template-columns:3.4rem minmax(0,1fr)}.notebook-version-list__ordinal{position:relative;display:flex;justify-content:center}.notebook-version-list__ordinal:after{position:absolute;top:2.2rem;bottom:0;left:50%;width:1px;background:var(--timeline-line);content:""}.notebook-version-list__item:last-child 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var(--proof-rule);border-radius:var(--radius-xl);background:var(--proof-bg);box-shadow:var(--proof-glow);color:var(--proof-text)}.certificate-card__header{display:flex;align-items:flex-start;justify-content:space-between;gap:var(--space-5);padding:clamp(1.5rem,5vw,3.2rem);border-bottom:1px solid var(--proof-rule)}.certificate-card__kicker{color:var(--proof-accent);font-family:var(--ui);font-size:.68rem;font-weight:800;letter-spacing:.16em;text-transform:uppercase}.certificate-card h2{margin:var(--space-2) 0 var(--space-3);font-size:clamp(1.85rem,4vw,3.4rem);font-weight:500;letter-spacing:-.035em;line-height:1}.certificate-card__reference{color:var(--proof-muted);font-family:var(--ui);font-size:.68rem}.certificate-card__stamp{display:grid;min-width:5.5rem;place-items:center;grid-gap:var(--space-1);gap:var(--space-1);padding:var(--space-3);border:1px solid var(--proof-rule);border-radius:50%;color:var(--proof-muted);font-family:var(--ui);font-size:.62rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase;aspect-ratio:1}.certificate-card__stamp span{font-size:1.15rem}.certificate-card__stamp--verified{border-color:var(--proof-verified);color:var(--proof-verified)}.certificate-card__facts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));margin:0;padding:var(--space-6) clamp(1.5rem,5vw,3.2rem);grid-gap:var(--space-5);gap:var(--space-5)}.certificate-card__facts div{min-width:0}.certificate-card__facts dt,.certificate-card__fingerprint span,.certificate-card__replay>span{margin-bottom:var(--space-1);color:var(--proof-muted);font-family:var(--ui);font-size:.62rem;font-weight:750;letter-spacing:.12em;text-transform:uppercase}.certificate-card__facts dd{overflow-wrap:anywhere;margin:0;font-family:var(--serif);font-size:1rem}.certificate-card__fingerprint{display:grid;grid-gap:var(--space-3);gap:var(--space-3);margin:0 clamp(1.5rem,5vw,3.2rem) var(--space-6);padding:var(--space-4);border:1px solid var(--proof-rule);border-radius:var(--radius-sm);background:var(--surface-sunken)}.certificate-card__fingerprint>div{display:flex;align-items:center;justify-content:space-between}.certificate-card__fingerprint code,.certificate-card__replay code{overflow-wrap:anywhere;color:inherit;font-size:.72rem}.certificate-card__chains{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));border-top:1px solid var(--proof-rule);border-bottom:1px solid var(--proof-rule)}.certificate-card__chains>span{display:grid;grid-gap:var(--space-1);gap:var(--space-1);padding:var(--space-4) clamp(1.5rem,5vw,3.2rem);color:var(--proof-muted);font-family:var(--ui);font-size:.68rem}.certificate-card__chains>span:first-child{border-right:1px solid var(--proof-rule)}.certificate-card__chains>span[data-complete=true]{color:var(--proof-verified)}.certificate-card__chains strong{color:var(--proof-text);font-size:.72rem}.certificate-card__replay{display:grid;grid-template-columns:minmax(0,1fr) auto;grid-gap:var(--space-2) var(--space-4);gap:var(--space-2) var(--space-4);padding:var(--space-5) clamp(1.5rem,5vw,3.2rem)}.certificate-card__replay>span{grid-column:1/-1}.certificate-card__replay .notebook-button{color:var(--proof-accent)}.certificate-actions{display:grid;grid-gap:var(--space-4);gap:var(--space-4)}.certificate-branding>div{box-shadow:none}.notebook-unlock{display:grid;width:min(100%,34rem);min-height:min(38rem,calc(100svh - 10rem));align-content:center;justify-items:center;grid-gap:var(--space-4);gap:var(--space-4);margin:0 auto;text-align:center}.notebook-unlock__ornament{display:grid;width:4.5rem;place-items:center;border:1px solid var(--border-strong);border-radius:50% 50% 48% 52%;color:var(--text-accent);font-family:var(--display);font-size:1.15rem;aspect-ratio:1;transform:rotate(-4deg)}.notebook-unlock__ornament span{transform:rotate(4deg)}.notebook-unlock__intro{max-width:44ch;margin:0 0 var(--space-3);color:var(--text-muted);font-size:1.02rem}.notebook-unlock__form{display:grid;width:min(100%,27rem);grid-gap:var(--space-3);gap:var(--space-3);text-align:left}.notebook-unlock__lookup,.notebook-unlock__progress{display:grid;width:min(100%,27rem);grid-gap:var(--space-2);gap:var(--space-2);color:var(--text-muted);font-family:var(--ui);font-size:.78rem;text-align:left}.notebook-progress-line{display:block;height:2px;overflow:hidden;border-radius:var(--radius-pill);background:var(--border)}.notebook-progress-line:after{display:block;width:35%;height:100%;background:var(--accent);animation:notebook-progress 1.3s var(--ease) infinite;content:""}@keyframes notebook-progress{0%{transform:translateX(-110%)}to{transform:translateX(290%)}}.notebook-unlock__privacy{margin:var(--space-4) 0 0;color:var(--text-muted);font-family:var(--ui);font-size:.7rem}.notebook-data-security{max-width:76ch}.notebook-settings-section{display:grid;grid-template-columns:minmax(0,.8fr) minmax(18rem,1fr);grid-gap:var(--space-8);gap:var(--space-8);padding:var(--space-8) 0;border-bottom:1px solid var(--workspace-rule)}.notebook-settings-section h2{margin:0 0 var(--space-2);font-size:1.65rem}.notebook-settings-section p{margin:0;color:var(--text-muted)}.notebook-settings-form{display:grid;grid-gap:var(--space-4);gap:var(--space-4)}.notebook-settings-form .notebook-button{justify-self:start}.notebook-security-facts{display:flex;flex-wrap:wrap;gap:var(--space-2);padding-top:var(--space-6);color:var(--text-success);font-family:var(--ui);font-size:.7rem}.notebook-security-facts span{padding:var(--space-2) var(--space-3);border:1px solid var(--border-subtle);border-radius:var(--radius-pill);background:var(--surface-success)}@supports (((-webkit-backdrop-filter:blur(1px)) or (backdrop-filter:blur(1px)))){[data-theme=dark] .app-shell--workspace .app-shell__nav,[data-theme=dark] .notebook-rail__toolbar,[data-theme=dark] .workspace-usage-popover{-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}}@media (max-width:719px){.app-shell--workspace .app-shell__nav{min-height:3.8rem;flex-wrap:nowrap;gap:var(--space-3)}.app-shell__product-label{display:none}.app-shell--workspace .app-shell__wordmark{font-size:1.22rem}.workspace-usage-wrap{margin-left:auto}.workspace-usage{min-width:3.2rem;padding:var(--space-2);text-align:center}.account-menu__email,.workspace-usage__desktop{display:none}.account-menu__compact,.workspace-usage__mobile{display:inline}.workspace-usage__track{display:none}.account-menu__trigger{min-width:2.55rem;padding:.45rem .6rem!important}.notebook-page__header{display:grid}.notebook-unlocked-status{display:none}.notebook-save-bar{align-items:stretch;flex-direction:column}.notebook-save-bar>span{display:none}.notebook-save-bar .notebook-actions,.notebook-save-bar .notebook-button--primary{width:100%}.notebook-file-list li{grid-template-columns:minmax(0,1fr) auto}.notebook-file-list li .notebook-button{grid-column:1/-1;justify-self:start}.certificate-card__chains,.certificate-card__facts{grid-template-columns:1fr}.certificate-card__chains>span:first-child{border-right:0;border-bottom:1px solid var(--proof-rule)}.certificate-card__replay{grid-template-columns:1fr}.notebook-settings-section{grid-template-columns:1fr;gap:var(--space-4)}.notebook-version-compare__pickers{grid-template-columns:1fr}.notebook-timeline__selection[data-selection-mode=false] input{visibility:hidden;pointer-events:none}.notebook-selection-bar strong{flex-basis:100%}}@media (min-width:720px){.notebook-workspace{grid-template-columns:17rem minmax(0,1fr);grid-template-rows:auto minmax(0,1fr)}.notebook-mobile-tabs{display:none}.notebook-workspace__selection-bar{grid-column:1/-1;grid-row:1}.notebook-workspace__main,.notebook-workspace__main[data-mobile-active=false],.notebook-workspace__rail,.notebook-workspace__rail[data-mobile-active=false]{display:block;grid-row:2}.notebook-rail__selection-slot:not([data-selection-mode=true]){min-height:0;padding:0;border:0}.notebook-back-button,.notebook-enter-selection{display:none}}@media (min-width:1100px){.notebook-workspace{grid-template-columns:clamp(19.5rem,24vw,23rem) minmax(0,1fr)}.notebook-workspace__main{padding-right:max(var(--gutter),calc((100vw - 96rem) / 2));padding-left:max(var(--gutter),calc((100vw - 96rem) / 2))}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,:after,:before{transition-duration:.01ms!important}}