:root{--ink:#1a2438;--ink-2:#0e1626;--ink-3:#232d44;--paper:#f5f1ea;--paper-2:#ece7dc;--paper-3:#e2dccf;--gold:#b89968;--gold-2:#a78753;--vermillion:#a83a2e;--graphite:#2a2f38;--mist:#8a8c92;--mist-2:#c9c5be;--line:rgba(26,36,56,0.12);--line-on-ink:rgba(245,241,234,0.14);--danger:#b23b3b;--success:#2e7d52;--font-display:var(--font-cormorant),var(--font-noto-serif-sc),"Noto Serif SC","Source Han Serif SC",Georgia,serif;--font-body:var(--font-inter),"Noto Sans SC",-apple-system,BlinkMacSystemFont,"Helvetica Neue",Arial,sans-serif;--font-mono:var(--font-jetbrains),"SF Mono",Menlo,Consolas,monospace;--font-cn-serif:var(--font-noto-serif-sc),"Noto Serif SC","Source Han Serif SC",serif;--t-xs:11px;--t-sm:13px;--t-base:16px;--t-md:18px;--t-lg:22px;--t-xl:32px;--t-2xl:48px;--t-3xl:72px;--t-4xl:104px;--t-5xl:144px;--density:1;--s-1:calc(4px * var(--density));--s-2:calc(8px * var(--density));--s-3:calc(12px * var(--density));--s-4:calc(16px * var(--density));--s-5:calc(24px * var(--density));--s-6:calc(32px * var(--density));--s-7:calc(48px * var(--density));--s-8:calc(64px * var(--density));--s-9:calc(96px * var(--density));--s-10:calc(128px * var(--density));--s-11:calc(160px * var(--density));--r-1:2px;--r-2:4px;--r-3:8px;--r-pill:999px;--sh-1:0 1px 2px rgba(14,22,38,0.04);--sh-2:0 8px 24px rgba(14,22,38,0.08);--sh-3:0 24px 60px rgba(14,22,38,0.18);--m-duration:420ms;--m-duration-fast:220ms;--m-ease:cubic-bezier(0.16,1,0.3,1);--m-translate:32px;--max-w:1440px;--gutter:clamp(20px,4vw,56px);--nav-h:87px}[data-palette=ink]{--ink:#1a2438;--ink-2:#0e1626;--ink-3:#232d44;--paper:#f5f1ea;--paper-2:#ece7dc;--paper-3:#e2dccf;--gold:#b89968;--gold-2:#a78753;--line:rgba(26,36,56,0.12)}[data-palette=celadon]{--ink:#1f3d36;--ink-2:#142822;--ink-3:#2a4f47;--paper:#f1eee5;--paper-2:#e6e2d4;--paper-3:#d8d2c0;--gold:#c6a23f;--gold-2:#a9852f;--line:rgba(31,61,54,0.14)}[data-palette=charcoal]{--ink:#1c1c1e;--ink-2:#0b0b0c;--ink-3:#2a2a2c;--paper:#efece5;--paper-2:#e3dfd5;--paper-3:#d5d1c4;--gold:#b8956a;--gold-2:#97774f;--line:rgba(28,28,30,0.14)}[data-palette=porcelain]{--ink:#2a3d54;--ink-2:#1b2a3d;--ink-3:#3a5070;--paper:#f7f5ef;--paper-2:#ecead9;--paper-3:#d8d3bd;--gold:#c2a36b;--gold-2:#a48650;--line:rgba(42,61,84,0.12)}[data-density=compact]{--density:0.78}[data-density=regular]{--density:1}[data-density=spacious]{--density:1.22}[data-type=cormorant-inter]{--font-display:var(--font-cormorant),var(--font-noto-serif-sc),"Noto Serif SC","Source Han Serif SC",Georgia,serif;--font-body:var(--font-inter),"Noto Sans SC",-apple-system,BlinkMacSystemFont,"Helvetica Neue",Arial,sans-serif}[data-type=spectral-manrope]{--font-display:var(--font-spectral),var(--font-noto-serif-sc),"Noto Serif SC","Source Han Serif SC",Georgia,serif;--font-body:var(--font-manrope),"Noto Sans SC",-apple-system,BlinkMacSystemFont,"Helvetica Neue",Arial,sans-serif}@media (prefers-reduced-motion:reduce){:root{--m-duration:0.01ms;--m-duration-fast:0.01ms;--m-translate:0px}*,:after,:before{animation-duration:.01ms!important;animation-iteration-count:1!important;scroll-behavior:auto!important}}*,:after,:before{box-sizing:border-box}body,html{margin:0;padding:0}html{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-body);font-size:var(--t-base);line-height:1.55;color:var(--ink);background:var(--paper);text-rendering:optimizeLegibility}img,svg,video{display:block;max-width:100%}a{text-decoration:none}a,button{color:inherit}button{font:inherit;background:none;border:0;cursor:pointer;padding:0}h1,h2,h3,h4{font-weight:400;margin:0;letter-spacing:-.01em;line-height:1.05}.display,h1,h2,h3,h4{font-family:var(--font-display)}.display{font-weight:300;letter-spacing:-.02em;line-height:.96}.serif-it{font-family:var(--font-display);font-style:italic;font-weight:400}.mono{font-family:var(--font-mono);font-feature-settings:"ss01";letter-spacing:.02em}.cn{font-family:var(--font-cn-serif)}.eyebrow{font-family:var(--font-mono);font-size:var(--t-xs);letter-spacing:.18em;text-transform:uppercase;color:var(--mist)}.lede{font-size:var(--t-md);line-height:1.6;color:color-mix(in oklab,var(--ink),transparent 18%);max-width:60ch}.wrap{max-width:var(--max-w)}.wrap,.wrap-narrow{margin:0 auto;padding-inline:var(--gutter)}.wrap-narrow{max-width:980px}.col,.row{display:flex}.col{flex-direction:column}.gap-1{gap:var(--s-1)}.gap-2{gap:var(--s-2)}.gap-3{gap:var(--s-3)}.gap-4{gap:var(--s-4)}.gap-5{gap:var(--s-5)}.gap-6{gap:var(--s-6)}.gap-7{gap:var(--s-7)}.gap-8{gap:var(--s-8)}.reveal{opacity:1}.btn{display:inline-flex;align-items:center;gap:var(--s-3);padding:14px 22px;border-radius:var(--r-pill);font-family:var(--font-body);font-size:var(--t-sm);font-weight:500;letter-spacing:.04em;text-transform:uppercase;background:var(--ink);color:var(--paper);border:1px solid var(--ink);transition:transform var(--m-duration-fast) var(--m-ease),background var(--m-duration-fast) var(--m-ease)}.btn:hover{transform:translateY(-1px);background:var(--ink-2)}.btn .arrow{transition:transform var(--m-duration-fast) var(--m-ease)}.btn:hover .arrow{transform:translateX(4px)}.btn-outline{background:transparent;color:var(--ink);border-color:var(--line)}.btn-outline:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}.btn-ghost{background:transparent;color:var(--ink);border-color:transparent}.btn-ghost:hover{background:var(--paper-2)}.btn-on-ink{background:var(--paper);color:var(--ink);border-color:var(--paper)}.btn-on-ink:hover{background:var(--gold);border-color:var(--gold);color:var(--ink)}.btn-on-ink .arrow{color:var(--gold)}.btn-on-ink:hover .arrow{color:inherit}.app-badges{display:flex;flex-wrap:wrap;gap:12px}.app-badge{display:inline-flex;align-items:center;gap:10px;padding:9px 16px;border-radius:8px;border:1px solid transparent;text-decoration:none;line-height:1;transition:transform var(--m-duration-fast) var(--m-ease),background var(--m-duration-fast) var(--m-ease),border-color var(--m-duration-fast) var(--m-ease),opacity var(--m-duration-fast) var(--m-ease)}a.app-badge:hover{transform:translateY(-1px)}.app-badge-glyph{display:inline-flex;flex:0 0 auto}.app-badge-text{display:inline-flex;flex-direction:column;text-align:left}.app-badge-l1{font-size:9px;letter-spacing:.08em;text-transform:uppercase;opacity:.78}.app-badge-l2{font-size:16px;font-weight:600;letter-spacing:.01em}.app-badge-soon{margin-left:4px;font-family:var(--font-mono);font-size:9px;letter-spacing:.1em;text-transform:uppercase;padding:2px 6px;border-radius:999px;border:1px solid;opacity:.7}.app-badge.is-soon{cursor:default;opacity:.62}.app-badges-paper .app-badge{background:var(--ink);color:var(--paper);border-color:var(--ink)}.app-badges-paper a.app-badge:hover{background:var(--ink-2);border-color:var(--ink-2)}.app-badges-ink .app-badge{background:transparent;color:var(--paper);border-color:var(--line-on-ink)}.app-badges-ink a.app-badge:hover{border-color:var(--paper);background:rgba(245,241,234,.06)}.app-band{background:var(--paper-2);border-top:1px solid var(--line);padding:var(--s-8) var(--gutter)}.app-band-inner{display:flex;align-items:center;justify-content:space-between;gap:var(--s-7);flex-wrap:wrap}.app-band-copy{max-width:44ch}.app-band-title{font-family:var(--font-display);font-size:clamp(28px,3.4vw,44px);line-height:1.05;margin:10px 0 12px}.app-band-lede{color:var(--mist);font-size:15px;line-height:1.6}@media (max-width:640px){.app-band-inner{gap:var(--s-6)}.app-band .app-badges{justify-content:center}}.footer-app{margin-top:28px}.oauth-google-wrap:focus-within{outline:2px solid var(--gold);outline-offset:2px;border-radius:var(--r-2)}.link-arrow{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-mono);font-size:var(--t-xs);letter-spacing:.16em;text-transform:uppercase;color:var(--ink);border-bottom:1px solid var(--line);padding-bottom:4px;transition:border-color var(--m-duration-fast) var(--m-ease),color var(--m-duration-fast) var(--m-ease)}.link-arrow:hover{border-color:var(--ink)}.link-arrow .arrow{transition:transform var(--m-duration-fast) var(--m-ease)}.link-arrow:hover .arrow{transform:translateX(4px)}button.link-arrow{background:none;border-top:none;border-inline:none;cursor:pointer}.hr{background:var(--line)}.hr,.hr-on-ink{height:1px;width:100%}.hr-on-ink{background:var(--line-on-ink)}.seal{display:inline-grid;place-items:center;width:38px;height:38px;background:var(--gold);color:#2a2012;font-family:var(--font-cn-serif);font-weight:600;font-size:14px;border-radius:2px;letter-spacing:-.02em;line-height:1;box-shadow:inset 0 0 0 1px rgba(0,0,0,.18);-webkit-user-select:none;-moz-user-select:none;user-select:none}.nav{position:fixed;top:0;left:0;right:0;z-index:50;display:grid;grid-template-columns:auto 1fr auto;align-items:center;grid-gap:var(--s-5);gap:var(--s-5);padding:18px var(--gutter);color:var(--ink);transition:background var(--m-duration) var(--m-ease),color var(--m-duration) var(--m-ease),border-color var(--m-duration) var(--m-ease);border-bottom:1px solid transparent}.nav[data-on=ink]{color:var(--paper)}.nav[data-on=paper]{color:var(--ink)}.nav[data-scrolled=true]{background:color-mix(in oklab,var(--paper),transparent 8%);backdrop-filter:saturate(150%) blur(14px);-webkit-backdrop-filter:saturate(150%) blur(14px);border-bottom-color:var(--line);color:var(--ink)}.nav[data-scrolled=true][data-on=ink]{background:color-mix(in oklab,var(--ink),transparent 12%);border-bottom-color:var(--line-on-ink);color:var(--paper)}.nav .brand{font-family:var(--font-display);font-size:24px;font-weight:500;letter-spacing:-.01em;display:inline-flex;align-items:center;gap:8px}.brand .brand-mark{width:36px;height:36px;object-fit:contain;display:block}.brand .brand-mark-dark{display:none}.nav .links{display:flex;align-items:center;justify-content:center;gap:clamp(16px,2vw,32px);font-family:var(--font-body);font-size:14px;font-weight:500;letter-spacing:.02em;white-space:nowrap}.nav .links a{opacity:.78;transition:opacity var(--m-duration-fast) var(--m-ease)}.nav .links a:hover{opacity:1}.nav .links a.active{opacity:1;position:relative}.nav .links a.active:after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:1.5px;border-radius:1px;background:var(--gold)}.nav .right{display:flex;align-items:center;gap:var(--s-3)}.icon-btn{width:44px;height:44px;flex:none;display:grid;place-items:center;border-radius:50%;color:inherit;border:1px solid color-mix(in oklab,currentColor,transparent 78%);transition:background var(--m-duration-fast) var(--m-ease),border-color var(--m-duration-fast) var(--m-ease),transform var(--m-duration-fast) var(--m-ease)}.icon-btn:hover{background:color-mix(in oklab,currentColor,transparent 90%);border-color:color-mix(in oklab,currentColor,transparent 55%)}.icon-btn:active{transform:scale(.93)}.theme-glyph{display:block;transition:transform var(--m-duration) var(--m-ease)}.lang-dd{position:relative}.lang-btn{display:inline-flex;align-items:center;gap:8px;height:38px;padding:0 14px;border-radius:var(--r-pill);color:inherit;border:1px solid color-mix(in oklab,currentColor,transparent 78%);font-family:var(--font-mono);font-size:var(--t-xs);letter-spacing:.14em;text-transform:uppercase;transition:background var(--m-duration-fast) var(--m-ease),border-color var(--m-duration-fast) var(--m-ease)}.lang-btn:hover{background:color-mix(in oklab,currentColor,transparent 90%);border-color:color-mix(in oklab,currentColor,transparent 55%)}.lang-btn .chev{transition:transform var(--m-duration-fast) var(--m-ease);opacity:.7}.lang-dd.open .lang-btn .chev{transform:rotate(180deg)}.dd-backdrop{position:fixed;inset:0;z-index:58}.lang-menu{position:absolute;top:calc(100% + 10px);right:0;z-index:60;min-width:176px;background:color-mix(in oklab,var(--paper),transparent 6%);border:1px solid var(--line);border-radius:var(--r-3);box-shadow:var(--sh-2);padding:6px;backdrop-filter:saturate(150%) blur(16px);-webkit-backdrop-filter:saturate(150%) blur(16px);animation:dd-in var(--m-duration-fast) var(--m-ease)}@keyframes dd-in{0%{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:none}}.lang-menu button{display:flex;width:100%;align-items:center;justify-content:space-between;gap:18px;padding:10px 12px;border-radius:var(--r-2);color:var(--ink);transition:background var(--m-duration-fast) var(--m-ease)}.lang-menu button:hover{background:var(--paper-2)}.lang-menu .lang-name{font-family:var(--font-body);font-size:var(--t-sm)}.lang-menu .lang-code{font-family:var(--font-mono);font-size:var(--t-xs);letter-spacing:.14em;color:var(--mist)}.lang-menu button.cur .lang-code,.lang-menu button.cur .lang-name{color:var(--gold-2)}.nav-burger{display:none}.mobile-menu{position:fixed;inset:0;z-index:80;background:var(--paper);color:var(--ink);display:flex;flex-direction:column;padding:calc(env(safe-area-inset-top, 0px) + 30px) var(--gutter) calc(env(safe-area-inset-bottom, 0px) + 32px);-webkit-clip-path:inset(0 0 0 100%);clip-path:inset(0 0 0 100%);visibility:hidden;transition:visibility var(--m-duration),-webkit-clip-path var(--m-duration) var(--m-ease);transition:clip-path var(--m-duration) var(--m-ease),visibility var(--m-duration);transition:clip-path var(--m-duration) var(--m-ease),visibility var(--m-duration),-webkit-clip-path var(--m-duration) var(--m-ease);overflow:hidden auto}.mobile-menu.open{-webkit-clip-path:inset(0);clip-path:inset(0);visibility:visible}.mm-head{display:flex;align-items:center;justify-content:space-between;height:44px}.mm-head .brand{font-family:var(--font-display);font-size:24px;font-weight:500;letter-spacing:-.01em;display:inline-flex;align-items:center;gap:8px}.mm-close{display:grid;place-items:center;width:44px;height:44px;margin-right:-8px;color:inherit}.mm-links{display:flex;flex-direction:column;margin-top:var(--s-7);flex:1 1}.mm-links a{font-family:var(--font-display);font-weight:400;font-size:clamp(30px,8.5vw,46px);line-height:1.32;padding-block:2px;letter-spacing:-.01em;color:var(--ink);opacity:.72;transition:opacity var(--m-duration-fast) var(--m-ease)}.mm-links a.active,.mm-links a:hover{opacity:1}.mm-links a.active{color:var(--gold)}.mm-foot{display:flex;flex-direction:column;gap:var(--s-5);margin-top:var(--s-6);padding-top:var(--s-6);border-top:1px solid var(--line)}.mm-langs{display:grid;grid-template-columns:repeat(6,1fr);grid-gap:8px;gap:8px}.mm-langs button{min-height:44px;font-family:var(--font-mono);font-size:var(--t-xs);letter-spacing:.14em;text-transform:uppercase;padding:9px 8px;border-radius:var(--r-pill);color:var(--ink);opacity:.65;border:1px solid var(--line);transition:opacity var(--m-duration-fast) var(--m-ease),border-color var(--m-duration-fast) var(--m-ease)}.mm-langs button.cur{opacity:1;border-color:color-mix(in oklab,var(--ink),transparent 45%)}.mm-theme{grid-column:4/-1;min-height:44px;display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:9px 16px;border-radius:var(--r-pill);color:var(--ink);border:1px solid var(--line);font-family:var(--font-mono);font-size:var(--t-xs);letter-spacing:.14em;text-transform:uppercase}.mm-foot .btn{justify-content:center;padding:16px 22px}@media (max-width:1080px){.nav .links a:nth-child(n+4){display:none}}@media (max-width:880px){.nav{gap:10px;grid-template-columns:auto 1fr}.nav .lang-dd,.nav .links,.nav .nav-cta{display:none}.nav-burger{display:grid}.nav .right{justify-content:flex-end;gap:4px}.nav .right .nav-burger{margin-right:-13px}}@media (max-width:760px){.band-desktop-only,.band-stat{display:none}}.page-hero-title{font-size:clamp(56px,8vw,128px);max-width:16ch}:lang(en) .page-hero-title--wide{max-width:26ch;font-size:clamp(48px,6.2vw,96px)}:lang(zh) .page-hero-title--wide{max-width:19ch}.ph{position:relative;background:repeating-linear-gradient(45deg,color-mix(in oklab,currentColor,transparent 92%),color-mix(in oklab,currentColor,transparent 92%) 14px,color-mix(in oklab,currentColor,transparent 96%) 0,color-mix(in oklab,currentColor,transparent 96%) 28px);overflow:hidden;isolation:isolate}.ph.on-paper{color:var(--ink);background-color:var(--paper-2)}.ph.on-ink{color:var(--paper);background-color:var(--ink-3)}.ph.has-media{background:var(--ink)}.ph.has-media:after{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(180deg,transparent 0,transparent 58%,color-mix(in oklab,var(--ink),transparent 64%) 84%,color-mix(in oklab,var(--ink),transparent 46%) 100%);pointer-events:none}.ph-media{position:absolute;inset:0;z-index:0;width:100%;height:100%;object-fit:cover;object-position:var(--ph-object-position,center center)}.ph .ph-label{position:absolute;left:16px;bottom:14px;z-index:2;font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:color-mix(in oklab,currentColor,transparent 30%);display:inline-flex;gap:8px;align-items:center}.ph .ph-label:before{content:"";width:6px;height:6px;background:currentColor;border-radius:50%;display:inline-block}.ph .ph-tag{position:absolute;left:16px;top:14px;z-index:2;font-family:var(--font-mono);font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:color-mix(in oklab,currentColor,transparent 40%);border:1px solid color-mix(in oklab,currentColor,transparent 60%);padding:4px 8px;border-radius:999px}.ph.has-media .ph-tag{color:var(--paper);background:color-mix(in oklab,var(--ink),transparent 18%);border-color:color-mix(in oklab,var(--paper),transparent 62%)}.ph.has-media .ph-label{color:var(--paper);max-width:calc(100% - 32px);text-shadow:0 1px 18px color-mix(in oklab,var(--ink),transparent 15%)}.footer{background:var(--ink);color:var(--paper);padding:var(--s-9) var(--gutter) var(--s-5)}.footer a{opacity:.7;transition:opacity var(--m-duration-fast) var(--m-ease)}.footer a:hover{opacity:1}.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;grid-gap:var(--s-7);gap:var(--s-7);align-items:start}@media (max-width:760px){.footer-grid{grid-template-columns:1fr;gap:var(--s-6)}}.section{padding-block:clamp(80px,9vw,160px)}.section-tight{padding-block:clamp(56px,6vw,96px)}.section-ink{background:var(--ink);color:var(--paper)}.section-paper2{background:var(--paper-2)}.bignum{font-family:var(--font-display);font-weight:300;font-size:clamp(72px,9vw,144px);line-height:.95;letter-spacing:-.04em;font-feature-settings:lining-nums tabular-nums;font-variant-numeric:lining-nums tabular-nums}.lightbox{position:fixed;inset:0;z-index:100;background:color-mix(in oklab,var(--ink-2),transparent 4%);display:grid;place-items:center;padding:var(--gutter);animation:lb-fade var(--m-duration) var(--m-ease)}@keyframes lb-fade{0%{opacity:0}to{opacity:1}}.lightbox .lb-inner{position:relative;width:min(1100px,100%);aspect-ratio:16/9}.lightbox .lb-close{position:absolute;top:-44px;right:0;font-family:var(--font-mono);font-size:var(--t-xs);letter-spacing:.16em;text-transform:uppercase;color:var(--paper);opacity:.7}.lightbox .lb-close:hover{opacity:1}.tabnum{font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.muted{color:var(--mist)}.center{text-align:center}.uppercase{text-transform:uppercase;letter-spacing:.16em}:focus-visible{outline:2px solid var(--ink,#1a2438);outline-offset:2px;border-radius:1px}.footer :focus-visible,[data-nav-on=ink] :focus-visible,[data-on=ink] :focus-visible{outline-color:var(--paper,#f5f1ea)}.home-hero-frame{position:absolute;inset:0;width:100%;height:100%;border:0;pointer-events:none}@media (max-width:768px){.home-hero-frame{display:none}}@media (prefers-reduced-motion:reduce){.home-hero-frame{display:none}}.rr-gold-ink{color:#7a6017}[data-mode=dark] .rr-gold-ink{color:var(--gold)}