:root {
  color-scheme: light;
  font-family: Helvetica, Arial, sans-serif;
  background: #fffbED;
  color: #000;
  font-size: 16px;
  line-height: 1.58;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: #fffbED; }
a { color: #000; text-decoration-color: rgba(0, 0, 0, .45); text-underline-offset: 3px; }
a:hover { text-decoration-color: #000; }
a:focus-visible, summary:focus-visible { outline: 2px solid #000; outline-offset: 4px; }
.skip { position: absolute; top: -60px; left: 16px; z-index: 10; background: #000; color: #fffbED; padding: 8px 12px; }
.skip:focus { top: 10px; }
.site-header { min-height: 68px; display: flex; align-items: center; justify-content: space-between; gap: 32px; padding: 16px clamp(20px, 4vw, 64px); border-bottom: 1px solid rgba(0, 0, 0, .2); font-size: 12px; }
.site-name { font-weight: 700; text-decoration: none; letter-spacing: .02em; white-space: nowrap; }
.site-header nav { display: flex; flex-wrap: wrap; gap: clamp(14px, 2.5vw, 34px); }
.site-header nav a { text-decoration: none; }
.site-header nav a:hover { text-decoration: underline; }
main { max-width: 1110px; margin: auto; padding: 0 32px 70px; }
p { margin: 0 0 15px; color: rgba(0, 0, 0, .76); }
h1, h2, h3 { color: #000; }
.hero { padding: 72px 0 64px; }
.mark { position: relative; width: 252px; height: 84px; overflow: hidden; margin: 0 0 44px -12px; }
.mark img { position: absolute; display: block; width: 500px; height: 500px; max-width: none; left: -124px; top: -208px; }
.eyebrow { margin: 0 0 13px; font-size: 11px; font-weight: 700; letter-spacing: .16em; text-transform: uppercase; color: rgba(0, 0, 0, .63); }
h1 { margin: 0 0 18px; font-size: clamp(3.65rem, 7vw, 6.3rem); font-weight: 500; letter-spacing: -.065em; line-height: 1; }
.hero-dek { max-width: 790px; font-size: clamp(1.08rem, 2vw, 1.35rem); line-height: 1.48; color: rgba(0, 0, 0, .76); }
.hero-meta { display: flex; flex-wrap: wrap; gap: 12px 34px; padding-top: 29px; margin-top: 30px; border-top: 1px solid rgba(0, 0, 0, .22); font-size: 12px; color: rgba(0, 0, 0, .7); }
.hero-meta span { display: flex; gap: 9px; }
.hero-meta strong { color: #000; font-weight: 700; }
.chapter { padding: 54px 0 27px; scroll-margin-top: 20px; }
.chapter-head { display: grid; grid-template-columns: 180px minmax(0, 1fr); align-items: baseline; gap: 20px; border-top: 1px solid #000; padding-top: 23px; margin-bottom: 31px; }
.chapter-number { font-size: 11px; font-weight: 700; letter-spacing: .09em; text-transform: uppercase; white-space: nowrap; }
.chapter h2 { margin: 0; font-size: clamp(1.85rem, 3vw, 2.65rem); font-weight: 500; letter-spacing: -.045em; line-height: 1.15; }
.chapter h3 { margin: 0 0 11px; font-size: 17px; font-weight: 600; letter-spacing: -.018em; line-height: 1.3; }
.intro-grid { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(260px, .85fr); gap: 60px; }
.lead { color: #000; font-size: 1.27rem; line-height: 1.4; letter-spacing: -.02em; }
.note { border-left: 2px solid #000; padding: 1px 0 0 19px; }
.note strong { display: block; margin-bottom: 10px; font-size: 12px; text-transform: uppercase; letter-spacing: .08em; }
.note p { margin: 0; font-size: 13px; }
.scope-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 27px; margin-top: 32px; }
.scope-grid > div { border-top: 1px solid rgba(0, 0, 0, .25); padding-top: 15px; }
.scope-label { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .07em; }
.scope-grid p { margin: 9px 0 0; font-size: 13px; }
.benchmark-intro { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.benchmark-intro p { margin: 0; font-size: 14px; }
code { background: rgba(0, 0, 0, .07); padding: 2px 5px; font-size: .87em; overflow-wrap: anywhere; }
.measure-summary { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; margin: 28px 0 36px; }
.measure-summary > div { border-top: 1px solid rgba(0, 0, 0, .28); padding-top: 15px; }
.measure-summary small { display: block; font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .07em; }
.measure-summary strong { display: block; font-size: clamp(2.5rem, 4vw, 3.65rem); font-weight: 500; letter-spacing: -.06em; line-height: 1.15; margin: 7px 0 2px; }
.measure-summary span { color: rgba(0, 0, 0, .61); font-size: 12px; }
.table-group { margin: 26px 0 38px; }
.table-group h3 { margin-bottom: 10px; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; min-width: 590px; font-size: 13px; }
caption { text-align: left; color: rgba(0, 0, 0, .56); font-size: 11px; padding-bottom: 8px; }
th, td { text-align: left; padding: 10px 11px; border-bottom: 1px solid rgba(0, 0, 0, .16); vertical-align: top; }
th { border-top: 1px solid rgba(0, 0, 0, .65); font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: .07em; }
td { color: rgba(0, 0, 0, .72); }
td:first-child { color: #000; }
td:not(:first-child), th:not(:first-child) { white-space: nowrap; }
.comparison { border-top: 1px solid rgba(0, 0, 0, .35); border-bottom: 1px solid rgba(0, 0, 0, .2); padding: 15px 0; }
.comparison summary { cursor: pointer; display: flex; align-items: baseline; justify-content: space-between; gap: 16px; font-size: 14px; font-weight: 600; }
.comparison summary span { color: rgba(0, 0, 0, .55); font-size: 11px; font-weight: 400; }
.comparison[open] summary { margin-bottom: 16px; }
.comparison p { max-width: 800px; font-size: 13px; }
.section-intro { max-width: 810px; margin-bottom: 28px; }
.flow { display: grid; grid-template-columns: repeat(4, 1fr); padding: 0; margin: 0; list-style: none; border-top: 1px solid rgba(0, 0, 0, .32); border-bottom: 1px solid rgba(0, 0, 0, .32); }
.flow li { min-width: 0; padding: 17px 17px 18px 0; }
.flow li + li { border-left: 1px solid rgba(0, 0, 0, .16); padding-left: 17px; }
.flow span { display: block; font-size: 10px; font-weight: 700; color: rgba(0, 0, 0, .5); margin-bottom: 18px; }
.flow strong { display: block; font-size: 13px; margin-bottom: 7px; }
.flow small { display: block; color: rgba(0, 0, 0, .65); font-size: 11px; line-height: 1.5; }
.side-path { margin: 13px 0 31px; font-size: 12px; color: rgba(0, 0, 0, .58); }
.component-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 42px; }
.component-grid article { padding: 22px 0 19px; border-top: 1px solid rgba(0, 0, 0, .2); scroll-margin-top: 24px; }
.component-kind { display: block; margin-bottom: 13px; font-size: 10px; text-transform: uppercase; letter-spacing: .1em; color: rgba(0, 0, 0, .55); }
.component-grid p { font-size: 13px; margin: 0; }
.detail-list { border-top: 1px solid rgba(0, 0, 0, .25); }
.detail-list > div { display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: 30px; border-bottom: 1px solid rgba(0, 0, 0, .17); padding: 19px 0; }
.detail-list h3 { margin: 0; }
.detail-list p { margin: 0; font-size: 13px; }
.limits-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.limits-grid > div { border-top: 1px solid rgba(0, 0, 0, .28); padding-top: 18px; }
.limits-grid p { margin: 0; font-size: 13px; }
.closing { max-width: 780px; border-left: 2px solid #000; margin: 33px 0; padding: 3px 0 3px 18px; font-weight: 600; color: #000; }
.resources { display: flex; flex-wrap: wrap; gap: 13px 27px; align-items: center; padding-top: 18px; border-top: 1px solid rgba(0, 0, 0, .2); font-size: 13px; }
.resources span { color: rgba(0, 0, 0, .58); font-size: 11px; text-transform: uppercase; letter-spacing: .08em; }
footer { display: flex; justify-content: space-between; gap: 20px; border-top: 1px solid rgba(0, 0, 0, .2); margin-top: 72px; padding-top: 18px; color: rgba(0, 0, 0, .58); font-size: 11px; }
@media (max-width: 800px) {
  .intro-grid { gap: 30px; }
  .chapter-head { grid-template-columns: 135px minmax(0, 1fr); }
  .flow { grid-template-columns: repeat(2, 1fr); }
  .flow li:nth-child(3) { border-left: 0; padding-left: 0; border-top: 1px solid rgba(0, 0, 0, .16); }
  .flow li:nth-child(4) { border-top: 1px solid rgba(0, 0, 0, .16); }
}
@media (max-width: 650px) {
  .site-header { padding: 14px 19px; align-items: flex-start; flex-direction: column; gap: 14px; }
  .site-header nav { gap: 15px; font-size: 11px; }
  main { padding: 0 20px 50px; }
  .hero { padding: 55px 0 45px; }
  .mark { margin-bottom: 34px; }
  h1 { font-size: 3.7rem; }
  .hero-dek { font-size: 1.08rem; }
  .hero-meta { gap: 11px 20px; }
  .chapter { padding: 35px 0 16px; }
  .chapter-head { display: block; margin-bottom: 24px; }
  .chapter-number { display: block; margin-bottom: 12px; }
  .intro-grid, .scope-grid, .benchmark-intro, .measure-summary, .component-grid, .limits-grid { grid-template-columns: 1fr; }
  .intro-grid { gap: 25px; }
  .scope-grid { gap: 16px; }
  .benchmark-intro { gap: 13px; }
  .measure-summary { gap: 19px; }
  .comparison summary { display: block; }
  .comparison summary span { display: block; margin-top: 4px; }
  .detail-list > div { display: block; }
  .detail-list h3 { margin-bottom: 9px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }