:root {
  --bg: #f7f5f0; --bg-raise: #ffffff; --bg-alt: #f0ede6;
  --text: #1d1e21; --text-dim: #5f5d58; --faint: #e2ddd3; --border: #d6d0c4; --border-strong: #b9b2a5;
  --focus: rgba(29,30,33,0.22); --shadow: rgba(29,30,33,0.06);
  --mark-1: #1d1e21; --mark-2: #3b3d42;
  --primary: #1d1e21; --on-primary: #ffffff; --primary-hover: #3b3d42;
  --font-ui: "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: Consolas, "Roboto Mono", "DejaVu Sans Mono", monospace;
  --font-brand: Georgia, "Noto Serif", "Times New Roman", serif;
  --wrap: 1160px;
  color-scheme: light;
}
:root[data-theme="dark"] {
  --bg: #16181b; --bg-raise: #1d2024; --bg-alt: #1a1c20;
  --text: #e9ebee; --text-dim: #a1a7ae; --faint: #2a2e33; --border: #33383e; --border-strong: #4b5158;
  --focus: rgba(230,233,237,0.25); --shadow: rgba(0,0,0,0.3);
  --mark-1: #f7f8fa; --mark-2: #8e949c;
  --primary: #e9ebee; --on-primary: #16181b; --primary-hover: #ffffff;
  color-scheme: dark;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
html, body { background: var(--bg); }
body { font-family: var(--font-ui); color: var(--text); line-height: 1.6; font-size: 16px; overflow-x: hidden; }
a { color: inherit; }
img, svg { display: block; }
:root:not([data-theme="dark"]) .when-day { display: none; }
:root[data-theme="dark"] .when-night { display: none; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.skip { position: absolute; left: -9999px; top: 8px; }
.skip:focus { left: 16px; z-index: 100; background: var(--bg-raise); padding: 8px 12px; border-radius: 8px; }

.site-head { position: sticky; top: 0; z-index: 40; background: var(--bg); border-bottom: 1px solid var(--border); }
.head-row { display: flex; align-items: center; gap: 28px; min-height: 68px; }
.brand { display: flex; align-items: center; gap: 11px; text-decoration: none; font-family: var(--font-brand); font-size: 17px; letter-spacing: 0.3em; color: var(--text); white-space: nowrap; flex: none; }
.brand svg { width: 19px; height: 22px; flex: none; }
.tabs { margin-left: auto; display: flex; align-items: stretch; gap: 26px; align-self: stretch; }
.tabs a { display: flex; align-items: center; text-decoration: none; font-size: 15px; font-weight: 500; color: var(--text-dim); white-space: nowrap; border-bottom: 2px solid transparent; margin-bottom: -1px; transition: color 0.15s, border-color 0.15s; }
.tabs a:hover { color: var(--text); }
.tabs a[aria-current="page"] { color: var(--text); border-bottom-color: var(--text); }
.icon-btn { width: 36px; height: 36px; flex: none; display: inline-flex; align-items: center; justify-content: center; cursor: pointer; color: var(--text); background: transparent; border-radius: 8px; border: 1px solid var(--border); transition: border-color 0.15s, background 0.15s; }
.icon-btn:hover { border-color: var(--border-strong); background: var(--bg-raise); }
.icon-btn svg { width: 17px; height: 17px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; text-decoration: none; cursor: pointer; font-family: inherit; font-size: 15px; font-weight: 600; padding: 11px 22px; min-height: 46px; border-radius: 8px; border: 1px solid var(--primary); background: var(--primary); color: var(--on-primary); transition: background 0.15s, border-color 0.15s, color 0.15s; }
.btn:hover { background: var(--primary-hover); border-color: var(--primary-hover); }
.btn.quiet { background: transparent; color: var(--text); border-color: var(--border-strong); font-weight: 500; }
.btn.quiet:hover { border-color: var(--text); background: transparent; }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; }
a:focus-visible, .btn:focus-visible, .icon-btn:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }

.hero { padding: 76px 0 64px; }
.hero-grid { display: grid; grid-template-columns: 1fr auto; gap: 48px; align-items: center; }
.hero-mark svg { width: 190px; height: 224px; }
.eyebrow { display: inline-flex; align-items: center; gap: 10px; font-size: 12px; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; color: var(--text-dim); margin-bottom: 18px; }
.wordmark { font-family: var(--font-brand); font-weight: 400; font-size: clamp(44px, 8vw, 78px); letter-spacing: 0.32em; line-height: 1.05; margin-right: -0.32em; }
h1.title { font-family: var(--font-brand); font-weight: 400; font-size: clamp(36px, 5.6vw, 58px); letter-spacing: 0.01em; line-height: 1.12; }
.lead { font-size: clamp(19px, 2.2vw, 23px); line-height: 1.45; margin-top: 20px; max-width: 34em; }
.hero p.sub { color: var(--text-dim); margin-top: 14px; max-width: 40em; }
.hero .btn-row { margin-top: 30px; }

.chip { display: inline-flex; align-items: center; gap: 7px; font-size: 12px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; padding: 4px 11px; border-radius: 999px; color: var(--text); border: 1px solid var(--border); background: var(--bg-raise); white-space: nowrap; }
.chip::before { content: ''; width: 7px; height: 7px; border-radius: 50%; background: var(--text-dim); }
.chip.live::before { background: var(--text); }

section.band { padding: 80px 0; border-top: 1px solid var(--faint); }
section.band.alt { background: var(--bg-alt); }
.section-head { max-width: 46em; margin-bottom: 34px; }
.kicker { font-size: 12px; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; color: var(--text-dim); margin-bottom: 10px; }
h2 { font-family: var(--font-brand); font-weight: 400; font-size: clamp(28px, 3.6vw, 38px); line-height: 1.2; }
.section-head p { color: var(--text-dim); margin-top: 12px; font-size: 17px; }
h3 { font-size: 18px; font-weight: 700; line-height: 1.35; }

.grid { display: grid; gap: 20px; }
.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.card { position: relative; padding: 26px; border-radius: 12px; border: 1px solid var(--border); background: var(--bg-raise); box-shadow: 0 1px 2px var(--shadow); display: flex; flex-direction: column; min-width: 0; }
.card p { color: var(--text-dim); margin-top: 8px; font-size: 15px; }
.card .num { font-family: var(--font-brand); font-size: 15px; letter-spacing: 0.2em; color: var(--text-dim); margin-bottom: 14px; }
.well { padding: 24px 0 0; border-top: 2px solid var(--text); }

.product { padding: 28px; }
.product-top { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 12px; margin-bottom: 14px; }
.product h3 { font-family: var(--font-brand); font-weight: 400; font-size: 26px; }
.product ul { list-style: none; margin: 16px 0 22px; display: grid; gap: 8px; }
.product li { position: relative; padding-left: 20px; font-size: 15px; }
.product li::before { content: ''; position: absolute; left: 0; top: 0.68em; width: 8px; height: 1px; background: var(--text); }
.product .more { margin-top: auto; align-self: flex-start; }

.stats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 40px 32px; }
.stat .value { font-family: var(--font-brand); font-size: clamp(30px, 4vw, 42px); line-height: 1.1; }
.stat .label { color: var(--text-dim); font-size: 14px; margin-top: 6px; }

.ticks { list-style: none; display: grid; gap: 12px; }
.ticks li { position: relative; padding-left: 26px; }
.ticks li::before { content: ''; position: absolute; left: 2px; top: 0.5em; width: 10px; height: 5px; border-left: 2px solid var(--text); border-bottom: 2px solid var(--text); transform: rotate(-45deg); }
.ticks.dim li { color: var(--text-dim); }
.ticks.dim li::before { border-color: var(--text-dim); }
.steps { list-style: none; counter-reset: step; display: grid; gap: 20px; grid-template-columns: repeat(4, minmax(0, 1fr)); }
.steps li { counter-increment: step; }
.steps li::before { content: counter(step); display: inline-flex; align-items: center; justify-content: center; width: 34px; height: 34px; border-radius: 50%; font-family: var(--font-brand); font-size: 16px; margin-bottom: 14px; border: 1px solid var(--text); }

.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 48px; align-items: start; }
.prose p { color: var(--text-dim); font-size: 17px; }
.prose p + p { margin-top: 14px; }
.prose strong { color: var(--text); }
.quote { font-family: var(--font-brand); font-size: clamp(22px, 2.8vw, 28px); line-height: 1.4; }
.table { width: 100%; border-collapse: collapse; font-size: 15px; }
.table th, .table td { text-align: left; padding: 12px 10px; border-bottom: 1px solid var(--faint); vertical-align: top; }
.table th { font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-dim); font-weight: 600; }
.links { display: grid; gap: 12px; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.link-card { text-decoration: none; display: flex; flex-direction: column; gap: 4px; transition: border-color 0.15s; }
.link-card:hover { border-color: var(--border-strong); }
.link-card .label { font-weight: 700; }
.link-card .hint { color: var(--text-dim); font-size: 14px; }
.link-card .arrow { margin-top: 12px; font-size: 14px; font-weight: 600; color: var(--text); }
.link-card .arrow::after { content: ' \2192'; }
.mono { font-family: var(--font-mono); font-size: 0.95em; }
.cta { text-align: center; }
.cta h2 { margin-bottom: 12px; }
.cta p { color: var(--text-dim); max-width: 36em; margin: 0 auto 26px; }
.cta .btn-row { justify-content: center; }

.site-foot { border-top: 1px solid var(--border); background: var(--bg); padding: 44px 0 36px; font-size: 14px; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 28px; }
.foot-grid h4 { font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--text-dim); margin-bottom: 12px; font-weight: 600; }
.foot-grid ul { list-style: none; display: grid; gap: 8px; }
.foot-grid a { text-decoration: none; color: var(--text); }
.foot-grid a:hover { text-decoration: underline; }
.foot-note { color: var(--text-dim); margin-top: 12px; max-width: 26em; }
.foot-base { margin-top: 32px; padding-top: 18px; border-top: 1px solid var(--faint); color: var(--text-dim); display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px; }

@media (max-width: 980px) {
  .grid.four { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid.three { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .links { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 860px) {
  .head-row { flex-wrap: wrap; gap: 10px 14px; padding: 10px 0; }
  .head-row .icon-btn { margin-left: auto; }
  .tabs { order: 3; margin-left: 0; width: 100%; gap: 22px; overflow-x: auto; scrollbar-width: none; padding-top: 2px; }
  .tabs::-webkit-scrollbar { display: none; }
  .tabs a { padding: 8px 0 10px; }
  .site-head { padding-bottom: 0; }
  .site-head { position: static; }
}
@media (max-width: 560px) {
  .tabs { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0 12px; }
  .tabs a { justify-content: center; padding: 8px 0; }
}
@media (max-width: 760px) {
  .wrap { padding: 0 16px; }
  .hero { padding: 44px 0 44px; }
  .hero-grid { grid-template-columns: 1fr; gap: 28px; }
  .hero-mark { order: -1; }
  .hero-mark svg { width: 92px; height: 108px; }
  .grid.two, .grid.three, .grid.four, .split, .steps, .stats, .links { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; gap: 28px 20px; }
  section.band { padding: 56px 0; }
  .split { gap: 28px; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .foot-grid > div:first-child { grid-column: 1 / -1; }
  .table th, .table td { padding: 10px 6px; }
}
.table-wrap { width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; }
.table-wrap .table { min-width: 520px; }
.split .table-wrap .table, #next .table-wrap .table { min-width: 0; }
.brand { letter-spacing: 0.2em; }
.brand .brand-sub { color: var(--text-dim); }
.hero h1.title.statement { font-size: clamp(34px, 5vw, 54px); max-width: 15em; }
.proof { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 32px; }
.proof .value { font-family: var(--font-brand); font-size: clamp(26px, 3.2vw, 36px); line-height: 1.15; }
.proof .label { color: var(--text-dim); font-size: 14px; margin-top: 6px; }
.note-box { border: 1px solid var(--border); border-radius: 12px; padding: 22px 24px; background: var(--bg-raise); color: var(--text-dim); }
.note-box strong { color: var(--text); }
@media (max-width: 860px) { .proof { grid-template-columns: 1fr 1fr; gap: 24px 20px; } }
.doc-page { max-width: 820px; padding-top: 48px; padding-bottom: 72px; }
.doc-page h1 { font-family: var(--font-brand); font-weight: 400; font-size: clamp(32px, 4.4vw, 46px); line-height: 1.15; }
.doc-page .lede, .doc-page .updated { color: var(--text-dim); margin: 14px 0 28px; }
.doc-page .lede { font-size: 19px; }
.doc-page h2 { font-size: 24px; margin: 44px 0 12px; padding-top: 18px; border-top: 1px solid var(--border); }
.doc-page h3 { font-size: 18px; margin: 26px 0 8px; }
.doc-page p, .doc-page li, .doc-page dd { color: var(--text-dim); }
.doc-page p { margin: 0 0 14px; }
.doc-page ul, .doc-page ol { padding-left: 22px; margin: 0 0 16px; }
.doc-page li { margin: 6px 0; }
.doc-page strong { color: var(--text); }
.doc-page a { color: var(--text); text-decoration: underline; text-underline-offset: 3px; }
.doc-page section { scroll-margin-top: 140px; }
.doc-page .table-wrap { margin: 14px 0 20px; }
.doc-page table { width: 100%; border-collapse: collapse; font-size: 15px; }
.doc-page th, .doc-page td { text-align: left; vertical-align: top; padding: 10px 12px; border-bottom: 1px solid var(--border); }
.doc-page th { color: var(--text); font-weight: 600; }
.doc-page td { color: var(--text-dim); }
.toc { border: 1px solid var(--border); border-radius: 12px; background: var(--bg-raise); padding: 18px 22px; margin-bottom: 12px; }
.toc-title { font-weight: 600; margin-bottom: 10px; }
.toc-links { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 6px 24px; }
.doc-page .toc-links a { color: var(--text-dim); text-decoration: none; font-size: 15px; }
.doc-page .toc-links a:hover { color: var(--text); }
.box { border: 1px solid var(--border); border-left: 3px solid var(--border-strong); border-radius: 10px; background: var(--bg-raise); padding: 16px 20px; margin: 16px 0 20px; }
.box.warn { border-left-color: var(--text); }
.box-title { font-weight: 600; color: var(--text); margin-bottom: 6px; }
.box p:last-child { margin-bottom: 0; }
.profiles { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin: 12px 0 20px; }
.profile { border: 1px solid var(--border); border-radius: 12px; background: var(--bg-raise); padding: 18px 20px; }
.profile-name { font-weight: 600; color: var(--text); margin-bottom: 10px; }
.profile dl { display: grid; grid-template-columns: 96px 1fr; gap: 4px 10px; font-size: 14px; margin: 0 0 10px; }
.profile dt { color: var(--text-dim); }
.profile dd { color: var(--text); margin: 0; }
.doc-page .profile p { font-size: 14px; margin: 0; }
.faq dt { color: var(--text); font-weight: 600; margin-top: 18px; }
.faq dd { margin: 6px 0 0; }
.key { display: inline-block; border: 1px solid var(--border-strong); border-radius: 5px; padding: 0 6px; font-size: 13px; color: var(--text); }
.search-sticky { position: sticky; top: 72px; z-index: 30; display: flex; justify-content: flex-end; margin-bottom: 24px; }
.search-bar { display: flex; align-items: center; gap: 6px; background: var(--bg-raise); border: 1px solid var(--border); border-radius: 10px; padding: 6px 8px; box-shadow: 0 2px 10px var(--shadow); }
.search-field { position: relative; display: flex; align-items: center; }
.search-bar input { background: var(--bg); border: 1px solid var(--border); color: var(--text); font: inherit; font-size: 14px; padding: 7px 32px 7px 10px; border-radius: 7px; width: 220px; }
.search-bar input:focus { outline: none; border-color: var(--border-strong); }
.search-bar input::-webkit-search-cancel-button { -webkit-appearance: none; appearance: none; }
.search-icon { position: absolute; right: 9px; width: 16px; height: 16px; pointer-events: none; color: var(--text-dim); }
.search-bar button { background: transparent; color: var(--text); border: 1px solid var(--border); border-radius: 7px; font: inherit; font-size: 12px; padding: 6px 9px; cursor: pointer; }
.search-bar button:disabled { opacity: 0.35; cursor: default; }
.search-count { color: var(--text-dim); font-size: 12px; min-width: 70px; text-align: right; white-space: nowrap; }
mark.hit { background: var(--faint); color: var(--text); border-radius: 2px; padding: 0 1px; }
mark.hit-active { background: var(--text); color: var(--bg); }
.doc-page pre { background: var(--bg-raise); border: 1px solid var(--border); border-radius: 10px; padding: 14px 16px; overflow-x: auto; margin: 0 0 16px; }
.doc-page code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.9em; color: var(--text); }
.doc-page hr { border: 0; border-top: 1px solid var(--border); margin: 32px 0; }
.doc-page .paper h1 { font-size: clamp(28px, 3.8vw, 40px); }
.doc-page .paper hr { display: none; }
.doc-page .paper a { word-break: break-word; }
.doc-page .paper h4 { font-size: 16px; margin: 20px 0 8px; color: var(--text); }
.doc-page .paper table { display: block; overflow-x: auto; }
.doc-links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 40px; }
@media (max-width: 640px) { .toc-links, .profiles { grid-template-columns: 1fr; } .search-bar { flex: 1; } .search-field { flex: 1; min-width: 0; } .search-bar input { width: 100%; min-width: 0; } .search-count { min-width: 0; } }