/* Brand values from vivra-frontend/tokens/design-tokens.css. */
:root{--vv-orange:#FF5A1F;--vv-orange-deep:#F2551C;--vv-orange-ink:#C23C08;--vv-orange-dark:#C93A0E;--vv-peach:#FFE6DA;--vv-peach-2:#FFF1EA;--vv-peach-line:#FFC9B3;--vv-ink:#0B0B0C;--vv-white:#FFFFFF;--font-sans:'Inter Tight','Helvetica Neue',Arial,sans-serif;--font-mono:'Fragment Mono',ui-monospace,monospace;--radius-card:20px;--radius-panel:24px;--sidebar:258px;--header:76px;--hero-gradient:linear-gradient(155deg,#FFFDFC 3%,#FFF1EA 47%,#FFAD88 72%,#F2551C 100%)}
[data-theme=light]{--bg:#FFFFFF;--bg-soft:#F7F6F4;--surface:#FFFFFF;--line:#E8E8E6;--line-soft:#F1F1EF;--text:#0B0B0C;--text-2:#3B3B3F;--text-3:#55555B;--muted:#6E6E74;--active:#FFF1EA;--accent-text:#C23C08;--card-shadow:0 4px 24px #0B0B0C04;--code:#F7F6F4}
[data-theme=dark]{--bg:#0B0B0C;--bg-soft:#111113;--surface:#141416;--line:#24242A;--line-soft:#1F1F23;--text:#F4F4F2;--text-2:#C9C9CE;--text-3:#A1A1A8;--muted:#A1A1A8;--active:#2C1B15;--accent-text:#FFAD88;--card-shadow:none;--code:#141416}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:104px}body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font-sans);font-size:15px;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button,input{font:inherit}button{color:inherit;cursor:pointer}button:disabled{cursor:default}button,a,input,summary,[tabindex]{-webkit-tap-highlight-color:transparent}:focus-visible{outline:2px solid var(--accent-text);outline-offset:4px}::selection{background:var(--vv-peach-line);color:var(--vv-ink)}.icon{width:19px;height:19px;flex-shrink:0;vertical-align:middle}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.skip-link{position:fixed;top:-100px;left:20px;z-index:100;padding:12px 18px;background:var(--text);color:var(--bg);border-radius:10px}.skip-link:focus{top:10px}.topbar{height:var(--header);border-bottom:1px solid var(--line);display:flex;align-items:center;gap:18px;position:fixed;inset:0 0 auto;z-index:30;padding:0 30px;background:var(--bg)}.brand{font-size:34px;font-weight:800;letter-spacing:-2px;display:inline-flex;align-items:baseline;gap:4px;line-height:1}.brand>span{height:7px;width:7px;border-radius:50%;background:var(--vv-orange);display:inline-block;margin-left:2px}.header-divider{height:23px;width:1px;background:var(--line);margin-left:9px}.docs-label{font-size:14px;font-weight:500}.version,.tiny-tag{font:10px var(--font-mono);border:1px solid var(--line);border-radius:5px;padding:3px 5px;color:var(--muted)}.version{margin-left:-10px}.search-trigger{display:flex;align-items:center;gap:10px;border:1px solid var(--line);border-radius:9px;background:var(--bg-soft);height:37px;padding:0 11px;color:var(--muted);font-size:12px;margin-left:auto;width:330px;text-align:left}.search-trigger kbd{margin-left:auto}kbd{font:10px var(--font-mono);padding:3px 5px;border:1px solid var(--line);border-radius:4px;background:var(--surface);white-space:nowrap}.header-guide{font-size:12px;font-weight:600;margin-left:10px;display:flex;align-items:center;gap:8px}.header-guide .icon{width:15px}.icon-button{width:35px;height:35px;display:grid;place-items:center;border:1px solid var(--line);background:var(--bg);border-radius:8px}.icon-button:hover{background:var(--bg-soft)}.theme-toggle .sun{display:none}[data-theme=dark] .theme-toggle .moon{display:none}[data-theme=dark] .theme-toggle .sun{display:block}.menu-toggle{display:none}.sidebar{position:fixed;inset:var(--header) auto 0 0;width:var(--sidebar);border-right:1px solid var(--line);background:var(--bg);overflow-y:auto;padding:25px 17px 14px;scrollbar-width:thin;scrollbar-color:var(--line) transparent;z-index:20}.sidebar-top{display:flex;align-items:center;gap:11px;padding:0 9px 28px}.space-icon{display:grid;place-items:center;width:36px;height:36px;border:1px solid var(--line);border-radius:11px;background:var(--bg-soft);color:var(--accent-text)}.sidebar-top strong{display:block;font-size:13px}.sidebar-top div>span{display:block;font-size:11px;color:var(--muted);margin-top:4px}.nav-group{margin:0 0 20px}.nav-group h2,.nav-group summary{font-size:11px;font-weight:600;margin:0 0 8px;padding:0 10px;color:var(--muted)}.nav-group h2>span,.nav-group summary>span{display:flex;align-items:center;gap:8px}.nav-group h2 .icon,.nav-group summary .icon{width:14px;height:14px}.nav-group summary{display:flex;align-items:center;justify-content:space-between;cursor:pointer;list-style:none;min-height:23px}.nav-group summary::-webkit-details-marker{display:none}.nav-group[open]>summary>.icon{transform:rotate(90deg)}.nav-links{display:grid;gap:3px}.nav-links>a{display:flex;gap:10px;align-items:center;padding:9px 11px;min-height:35px;border-radius:7px;font-size:12px;color:var(--text-3);line-height:1.35}.nav-links>a:hover{background:var(--bg-soft);color:var(--text)}.nav-links>a[aria-current]{background:var(--active);color:var(--accent-text);font-weight:600}.nav-links .icon{width:15px;height:15px}.nav-dot{width:15px;flex:0 0 15px;display:grid;place-items:center}.nav-dot:after{content:'';width:4px;height:4px;background:var(--line);border-radius:50%}.nav-links>a[aria-current] .nav-dot:after{background:var(--vv-orange)}.tiny-tag{margin-left:auto;border-color:var(--vv-peach-line);color:var(--accent-text)}.sidebar-footer{border-top:1px solid var(--line);padding:20px 10px 7px;display:flex;align-items:center;gap:10px}.small-brand{font-size:22px;letter-spacing:-1.4px}.small-brand>span{width:4px;height:4px}.sidebar-footer>span:last-child{font-size:10px;color:var(--muted)}.workspace{margin:var(--header) 0 0 var(--sidebar);display:grid;grid-template-columns:minmax(0,850px) 180px;gap:48px;max-width:1270px;padding:32px 40px 0}main{min-width:0;padding-bottom:25px}.breadcrumb{display:flex;gap:10px;align-items:center;color:var(--muted);font-size:11px;margin-bottom:28px}.breadcrumb>span:last-child{color:var(--text-2)}.breadcrumb .icon{width:11px;height:11px}.page-outline{position:sticky;top:112px;align-self:start;font-size:11px;max-height:calc(100vh - 135px);overflow:auto;scrollbar-width:thin}.outline-title{font:9px var(--font-mono);letter-spacing:1px;color:var(--text-3)}.page-outline nav{display:grid;gap:0;margin:17px 0 25px;border-left:1px solid var(--line)}.page-outline nav a{display:block;padding:7px 0 7px 13px;line-height:1.5;color:var(--muted);margin-left:-1px;border-left:2px solid transparent}.page-outline nav a:hover,.page-outline nav a.active{color:var(--accent-text);border-left-color:var(--vv-orange)}.page-outline nav .subheading{padding-left:22px;font-size:10px}.outline-tools{display:grid;gap:14px;border-top:1px solid var(--line);padding-top:19px}.outline-tools>a,.outline-tools>button{display:flex;align-items:center;gap:8px;background:none;border:0;padding:0;font-size:10px;color:var(--muted);text-align:left}.outline-tools .icon{width:13px;height:13px}.outline-card{margin-top:28px;padding:17px 14px;border:1px solid var(--line);border-radius:12px;display:grid;gap:14px;background:var(--bg-soft)}.pulse-symbol{color:var(--accent-text)}.outline-card strong{font-size:14px;line-height:1.35;letter-spacing:-.35px}.outline-card>span:last-child{font-size:10px;color:var(--accent-text);display:flex;gap:5px;align-items:center}.outline-card>span:last-child .icon{width:13px}.hero{min-height:396px;position:relative;border-radius:var(--radius-panel);background:var(--hero-gradient);overflow:hidden;padding:34px 32px 0;color:var(--vv-ink);isolation:isolate;border:1px solid var(--vv-peach)}.hero-kicker{font:8px var(--font-mono);letter-spacing:1.3px;display:flex;align-items:center;gap:8px;position:relative;z-index:2}.beating-dot{width:6px;height:6px;border-radius:50%;background:var(--vv-orange);box-shadow:0 0 0 4px #FF5A1F15;animation:beat 2.4s ease-in-out infinite}.hero h1{font-size:clamp(40px,4.35vw,66px);line-height:.99;letter-spacing:-.055em;font-weight:600;margin:26px 0 17px;position:relative;z-index:2}.hero>p{font-size:13px;line-height:1.55;color:#5B3729;position:relative;z-index:2;margin:0 0 20px}.button{display:inline-flex;align-items:center;gap:13px;border-radius:40px;padding:11px 16px;font-size:11px;font-weight:600;position:relative;z-index:2}.button-dark{background:var(--vv-ink);color:var(--vv-white)}.button .icon{height:13px;width:13px}.button:hover{transform:translateY(-1px);box-shadow:0 4px 15px #0B0B0C20}.hero-art{position:absolute;top:20px;right:-35px;width:57%;height:300px;z-index:-1;display:grid;place-items:center}.orbital{border:1px solid #F2551C21;border-radius:50%;position:absolute;width:270px;height:270px}.orbit-two{width:210px;height:210px}.orbit-three{width:150px;height:150px}.heart-core{position:absolute;width:115px;height:115px;border-radius:50%;background:radial-gradient(circle at 35% 25%,#FFB187,#FF5A1F 55%,#CF3608);box-shadow:0 12px 45px #FF5A1F66,inset 0 2px 4px #FFE6DA80}.hero-art svg{width:110%;position:relative;overflow:visible}.hero-art path{fill:none;stroke-linecap:round;stroke-linejoin:round}.ecg-shadow{stroke:#FF5A1F;stroke-width:8;filter:blur(4px)}.ecg{stroke:var(--vv-white);stroke-width:3}.art-label{position:absolute;bottom:5px;right:55px;color:var(--vv-orange-dark);font:8px var(--font-mono);letter-spacing:2.5px}.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);position:relative;z-index:2;margin-top:28px;border-top:1px solid #C93A0E20;padding:19px 0 20px;gap:10px}.hero-stats>div{display:flex;flex-direction:column;gap:4px;border-right:1px solid #C93A0E20}.hero-stats>div:last-child{border:0}.hero-stats strong{font-weight:500;font-size:25px;letter-spacing:-1px}.hero-stats span{font-size:9px;color:#65341F}.home-section{margin-top:40px}.section-heading{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:18px}.eyebrow{font:8px var(--font-mono);letter-spacing:1.25px;color:var(--accent-text);text-transform:uppercase}.section-heading h2{font-size:25px;font-weight:600;letter-spacing:-.9px;margin:9px 0 0;line-height:1.2}.section-counter{font:9px var(--font-mono);color:var(--muted);padding-bottom:4px}.start-grid{display:grid;grid-template-columns:1fr 1fr;gap:13px}.start-card{border:1px solid var(--line);border-radius:15px;padding:20px;display:flex;flex-direction:column;box-shadow:var(--card-shadow);transition:border-color .18s,transform .18s}.start-card:hover{border-color:var(--vv-orange);transform:translateY(-3px)}.card-top{display:flex;align-items:center;justify-content:space-between}.card-icon{display:grid;place-items:center;color:var(--accent-text);width:33px;height:33px;background:var(--active);border-radius:9px}.card-icon .icon{width:17px;height:17px}.card-number{font:9px var(--font-mono);color:var(--muted)}.start-card h3{font-weight:600;font-size:17px;letter-spacing:-.4px;margin:17px 0 7px}.start-card p{font-size:12px;line-height:1.6;color:var(--muted);margin:0 0 22px;max-width:250px}.card-bottom{font-size:10px;font-weight:500;display:flex;align-items:center;justify-content:space-between;margin-top:auto}.card-bottom .icon{width:14px;height:14px;color:var(--muted)}.flow{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);padding:20px 0 0;margin:0;border-top:1px solid var(--line)}.flow>li{position:relative;padding-right:17px}.flow>li:before{content:'';position:absolute;width:6px;height:6px;top:-24px;left:0;background:var(--vv-orange);border:2px solid var(--bg);box-sizing:content-box;border-radius:50%}.flow>li>span{font:8px var(--font-mono);color:var(--accent-text)}.flow strong{display:block;margin:12px 0 6px;font-weight:600;font-size:14px}.flow p{margin:0;font-size:11px;line-height:1.6;color:var(--muted)}.developer-banner{display:flex;align-items:center;gap:17px;border:1px solid var(--line);border-radius:14px;padding:23px;margin-top:38px;background:var(--bg-soft)}.developer-symbol{display:grid;place-items:center;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:var(--surface)}.developer-banner>span:nth-child(2){display:grid;gap:6px}.developer-banner strong{font-size:16px;letter-spacing:-.3px}.developer-banner>span>span:last-child:not(.eyebrow){font-size:11px;color:var(--muted)}.developer-banner>.icon{margin-left:auto;color:var(--muted);width:16px}.home-note,.source-note{display:flex;gap:10px;align-items:flex-start;font-size:11px;line-height:1.7;color:var(--muted);margin:25px 0}.home-note p,.source-note p{margin:0}.home-note>.icon,.source-note>.icon{width:14px;height:14px;margin-top:3px}.home-note a,.source-note a{color:var(--accent-text);text-decoration:underline;text-underline-offset:3px}.article-meta{display:flex;align-items:center;justify-content:space-between;margin-bottom:17px}.article-meta>span:last-child{font:9px var(--font-mono);color:var(--muted)}.prose{font-size:15px;line-height:1.85;color:var(--text-2);overflow-wrap:anywhere}.prose h1,.prose h2,.prose h3,.prose h4{color:var(--text);line-height:1.2;letter-spacing:-.035em;font-weight:600;position:relative;scroll-margin-top:105px}.prose h1{font-size:43px;margin:0 0 24px;letter-spacing:-.045em}.prose h2{font-size:27px;margin:43px 0 18px;padding-top:4px}.prose h3{font-size:20px;margin:30px 0 14px}.prose h4{font-size:17px;margin:24px 0 12px}.prose p{margin:16px 0}.prose>h1+p{font-size:17px;line-height:1.75;color:var(--text-3);margin-bottom:28px}.prose a{color:var(--accent-text);text-decoration:underline;text-underline-offset:3px;text-decoration-color:var(--vv-peach-line)}.prose a:hover{text-decoration-color:var(--accent-text)}.prose .heading-anchor{font-size:.7em;text-decoration:none;color:var(--accent-text);padding-left:10px;opacity:0}.prose :is(h1,h2,h3,h4):hover .heading-anchor,.heading-anchor:focus{opacity:1}.prose strong{font-weight:600;color:var(--text)}.prose blockquote{margin:24px 0;padding:2px 20px;border-left:3px solid var(--vv-orange);border-radius:0 12px 12px 0;background:var(--active);font-size:13px}.prose blockquote p{margin:13px 0}.prose ul,.prose ol{padding-left:24px;margin:16px 0}.prose li{padding-left:5px;margin:6px 0}.prose li::marker{color:var(--accent-text)}.prose hr{border:0;border-top:1px solid var(--line);margin:35px 0}.prose :not(pre)>code{font:12px var(--font-mono);padding:3px 5px;background:var(--code);border:1px solid var(--line);border-radius:5px;box-decoration-break:clone}.code-block{border:1px solid var(--line);border-radius:12px;overflow:hidden;margin:24px 0;background:var(--code)}.code-toolbar{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);padding:8px 14px;font:10px var(--font-mono);color:var(--muted)}.copy-code{display:flex;align-items:center;gap:6px;border:0;background:none;font:10px var(--font-sans);padding:3px}.copy-code .icon{width:12px;height:12px}.code-block pre{margin:0;padding:18px;overflow:auto;font:12px/1.75 var(--font-mono);tab-size:2;white-space:pre}.code-block code{font:inherit}.table-wrap{overflow:auto;margin:25px 0;border:1px solid var(--line);border-radius:12px;max-width:100%;font-size:12px}.table-wrap table{border-collapse:collapse;width:100%;min-width:450px;line-height:1.65}.table-wrap th{text-align:left;font-weight:600;background:var(--bg-soft);color:var(--text);white-space:normal}.table-wrap th,.table-wrap td{padding:12px 14px;vertical-align:top;border-bottom:1px solid var(--line);min-width:90px}.table-wrap tr:last-child td{border-bottom:0}.table-wrap td:not(:last-child),.table-wrap th:not(:last-child){border-right:1px solid var(--line-soft)}.table-wrap td code{font-size:10px}.source-note{background:var(--bg-soft);border:1px solid var(--line);border-radius:12px;padding:15px}.page-nav{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:35px}.page-nav a{display:grid;gap:9px;border:1px solid var(--line);border-radius:12px;padding:17px 20px}.page-nav a:last-child{text-align:right}.page-nav a:hover{border-color:var(--vv-orange)}.page-nav span{font-size:10px;color:var(--muted)}.page-nav strong{font-size:13px;font-weight:500}.page-footer{margin-top:28px;border-top:1px solid var(--line);padding-top:20px;display:flex;justify-content:space-between;gap:20px;font-size:10px;color:var(--muted)}.page-footer a{display:flex;gap:6px;align-items:center}.page-footer .icon{width:12px;height:12px}.reading-progress{position:fixed;top:0;left:0;height:2px;background:var(--vv-orange);z-index:40;width:0;pointer-events:none}dialog{padding:0;color:var(--text);background:var(--surface);border:1px solid var(--line);border-radius:17px;box-shadow:0 25px 100px #0003;width:min(620px,calc(100% - 28px));max-height:80vh;margin:13vh auto auto;overflow:hidden}dialog::backdrop{background:#0B0B0C60;backdrop-filter:blur(5px)}.search-dialog-top{display:flex;align-items:center;gap:13px;padding:18px;border-bottom:1px solid var(--line)}.search-dialog-top>.icon{color:var(--accent-text)}.search-dialog-top input{color:var(--text);background:none;border:0;width:100%;font-size:15px;min-width:0;outline:none}.close-search{border:0;background:none;padding:0}.search-help{display:flex;justify-content:space-between;gap:15px;padding:13px 18px;border-top:1px solid var(--line);font-size:10px;color:var(--muted)}.search-help>span:last-child{font:9px var(--font-mono)}#search-results{max-height:52vh;overflow:auto;padding:10px}.search-empty{padding:28px 18px;text-align:center;font-size:13px;color:var(--muted)}.search-result{display:block;padding:13px 15px;border-radius:10px;border:1px solid transparent}.search-result:hover,.search-result.selected{background:var(--active);border-color:var(--line)}.search-result>span{font:9px var(--font-mono);color:var(--accent-text)}.search-result strong{display:block;font-size:15px;margin:6px 0}.search-result p{margin:0;font-size:11px;line-height:1.6;color:var(--muted)}.search-result mark{background:var(--vv-peach-line);color:var(--vv-ink);border-radius:2px}.toast{position:fixed;bottom:25px;left:50%;transform:translate(-50%,15px);opacity:0;pointer-events:none;background:var(--text);color:var(--bg);font-size:12px;border-radius:30px;padding:12px 20px;z-index:100;transition:opacity .2s,transform .2s}.toast.visible{opacity:1;transform:translate(-50%,0)}.mobile-overlay{position:fixed;inset:var(--header) 0 0;background:#0B0B0C55;z-index:19}.mobile-overlay[hidden]{display:none}
@keyframes beat{0%,100%{transform:scale(1)}15%{transform:scale(1.3)}30%{transform:scale(1)}}
@media(min-width:1600px){.workspace{margin-left:max(var(--sidebar),calc((100vw - 1600px)/2 + var(--sidebar)))}.sidebar{padding-left:20px}.hero h1{font-size:68px}}
@media(max-width:1250px){.workspace{gap:28px;padding:28px 30px 0;grid-template-columns:minmax(0,1fr) 155px}.topbar{gap:13px;padding:0 24px}.search-trigger{width:285px}.header-guide{font-size:11px}.hero{padding:28px 25px 0}.hero-art{right:-65px}.hero-kicker{font-size:7px}}
@media(max-width:1100px){:root{--sidebar:232px}.page-outline{display:none}.workspace{grid-template-columns:minmax(0,1fr);max-width:950px;padding:28px 35px 0}.header-guide{display:none}.hero h1{font-size:58px}.hero-art{right:-35px}.hero-kicker{font-size:8px}}
@media(max-width:760px){:root{--header:65px;--sidebar:280px}.topbar{padding:0 18px;gap:13px}.brand{font-size:30px}.docs-label{font-size:12px}.version,.header-divider{display:none}.search-trigger{width:34px;height:34px;padding:0;display:grid;place-items:center;border:0;background:none}.search-trigger>span,.search-trigger kbd{display:none}.menu-toggle{display:grid}.icon-button{width:32px;height:32px}.sidebar{transform:translateX(-100%);transition:transform .2s}.sidebar.is-open{transform:translateX(0);box-shadow:15px 0 50px #0001}.workspace{margin-left:0;padding:25px 20px 0;display:block}.breadcrumb{font-size:10px;margin-bottom:22px}.hero{padding:27px 24px 0;min-height:410px}.hero h1{font-size:56px;margin-top:26px}.hero-kicker{font-size:7px;letter-spacing:.9px}.hero-art{right:-55px;top:45px;width:60%;height:275px;opacity:.8}.hero-art svg{width:130%}.orbital{width:220px;height:220px}.orbit-two{width:165px;height:165px}.orbit-three{width:115px;height:115px}.heart-core{width:85px;height:85px}.hero>p{font-size:12px;max-width:220px}.hero-stats{margin-top:30px;gap:5px}.hero-stats strong{font-size:23px}.hero-stats span{font-size:8px;line-height:1.4;max-width:67px}.art-label{display:none}.home-section{margin-top:33px}.section-heading h2{font-size:23px}.section-counter{display:none}.start-grid{gap:11px}.start-card{padding:16px}.start-card h3{font-size:16px;line-height:1.2}.start-card p{font-size:11px}.flow{grid-template-columns:1fr 1fr;gap:28px 16px;padding-top:22px}.flow>li:nth-child(n+3):before{display:none}.flow>li>span{font-size:8px}.flow p{font-size:12px}.developer-banner{padding:19px 15px;gap:12px}.developer-banner strong{font-size:14px}.developer-symbol{width:35px;height:35px;flex-shrink:0}.developer-banner .eyebrow{font-size:7px}.home-note{font-size:10px}.prose{font-size:14px}.prose h1{font-size:35px}.prose>h1+p{font-size:16px}.prose h2{font-size:24px}.prose h3{font-size:19px}.page-nav a{padding:14px}.page-nav strong{font-size:12px}.page-footer{font-size:9px;gap:10px}.table-wrap table{min-width:420px}.search-help>span:last-child{display:none}.search-dialog-top input{font-size:13px}.header-guide{display:none}body.menu-open{overflow:hidden}}
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