:root {
  --flow-paper: #fbfaf6;
  --flow-ink: #20262d;
  --flow-blue: #234d9b;
  --flow-lime: #c4dc53;
  --flow-coral: #d87561;
  --flow-line: #cfd3d3;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--flow-ink); background: var(--flow-paper); font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif; }
a { color: inherit; }
.b35-brand { width: min(1280px, 100%); margin: 0 auto; padding: 20px 5vw 8px; font-size: 14px; font-weight: 700; letter-spacing: .06em; }
.b35-brand a { text-decoration: none; }
.b35-navigation { position: sticky; top: 0; z-index: 10; display: flex; gap: 18px; overflow-x: auto; padding: 13px 5vw; border-block: 1px solid var(--flow-line); background: rgba(251,250,246,.96); white-space: nowrap; font-size: 12px; }
.b35-navigation a { text-decoration: none; }
.b35-navigation a:hover { color: var(--flow-blue); }
main { max-width: 1280px; margin: 0 auto; padding: 0 5vw 96px; }
.flow-cover { display: grid; grid-template-columns: minmax(0,1fr) 142px; gap: 24px; padding: 36px 0 48px; border-bottom: 1px solid var(--flow-line); }
.flow-cover__eyebrow, .flow-cover__index { grid-column: 1 / -1; display: flex; align-items: center; justify-content: space-between; color: var(--flow-blue); font-size: 11px; letter-spacing: .12em; }
.flow-cover__eyebrow b { padding: 5px 10px; border-radius: 30px; background: var(--flow-lime); color: var(--flow-ink); font-size: 10px; }
.flow-cover__copy { align-self: center; }
.flow-cover h1 { max-width: 850px; margin: 22px 0; font-size: clamp(34px, 5.5vw, 68px); font-weight: 650; line-height: 1.14; letter-spacing: -.04em; }
.flow-cover__copy p { max-width: 800px; font-size: 15px; line-height: 2; }
.flow-cover__badge { align-self: center; margin: 0; text-align: center; }
.flow-cover__image { width: 104px; height: 104px; object-fit: contain; padding: 7px; border: 1px solid var(--flow-blue); border-radius: 50%; }
.flow-cover__badge figcaption { margin-top: 8px; color: var(--flow-blue); font-size: 11px; }
.flow-cover__index { grid-column: 1 / -1; justify-content: flex-start; gap: 13px; margin-top: 18px; color: var(--flow-coral); }
.flow-cover__index i { width: 58px; border-top: 1px solid currentColor; }
.flow-essay h3 { margin: 0 0 13px; font-size: 18px; font-weight: 650; }
.flow-essay p { margin: 0; font-size: 14px; line-height: 1.95; }
.flow-categories, .flow-experience, .flow-history, .flow-reading, .flow-material, .flow-language, .flow-conversation, .flow-journal, .flow-vision, .flow-brands, .flow-faq { padding: 54px 0; border-bottom: 1px solid var(--flow-line); }
.flow-categories header { display: flex; align-items: baseline; justify-content: space-between; gap: 24px; }
.flow-categories header span, .flow-history__heading span, .flow-reading__annotation, .flow-material__caption, .flow-conversation header span, .flow-journal header span, .flow-vision__copy > span, .flow-brands__index, .flow-faq header span { color: var(--flow-blue); font-size: 11px; letter-spacing: .1em; }
.flow-categories h2, .flow-history h2, .flow-reading h2, .flow-language h2, .flow-conversation h2, .flow-journal h2, .flow-vision h2, .flow-brands h2, .flow-faq h2 { margin: 10px 0 0; font-size: 30px; font-weight: 650; }
.flow-categories__grid { display: grid; grid-template-columns: repeat(3,1fr); margin: 28px 0 24px; border-block: 1px solid var(--flow-ink); }
.flow-categories__label { display: flex; flex-direction: column; gap: 8px; padding: 18px; border-right: 1px solid var(--flow-line); }
.flow-categories__label:last-child { border-right: 0; }
.flow-categories__label b { font-size: 23px; }.flow-categories__label span { color: var(--flow-coral); font-size: 11px; }
.flow-categories__note { max-width: 840px; }
.flow-experience { display: grid; grid-template-columns: 145px minmax(0,1fr); gap: 30px; align-items: center; }
.flow-experience__bar { display: flex; flex-direction: column; align-items: flex-start; gap: 13px; color: var(--flow-coral); font-size: 11px; }
.flow-experience__bar i { height: 42px; margin-left: 8px; border-left: 1px solid currentColor; }
.flow-experience__copy { max-width: 860px; }
.flow-experience__line { grid-column: 2; display: flex; justify-content: space-between; padding-top: 13px; border-top: 1px solid var(--flow-line); color: var(--flow-blue); font-size: 11px; }
.flow-history__heading { display: flex; align-items: baseline; gap: 24px; }
.flow-history__timeline { display: grid; grid-template-columns: repeat(4,1fr); margin: 36px 0 23px; border-top: 1px solid var(--flow-coral); }
.flow-history__timeline i { width: 8px; height: 8px; margin-top: -5px; border: 1px solid var(--flow-coral); border-radius: 50%; background: var(--flow-paper); }
.flow-history__body { display: grid; grid-template-columns: 110px minmax(0,760px); gap: 25px; }
.flow-history__artifact { width: 88px; height: 88px; object-fit: contain; padding: 8px; background: #eef0e1; }
.flow-reading { display: grid; grid-template-columns: 210px 1fr; gap: 30px; align-items: start; }
.flow-reading h2 { margin: 0; }
.flow-reading__annotation { grid-column: 2; display: flex; gap: 11px; align-items: center; color: var(--flow-coral); }
.flow-reading__annotation em { font-style: normal; color: var(--flow-blue); }
.flow-material { display: grid; grid-template-columns: 180px minmax(0,1fr) 150px; gap: 24px; align-items: center; }
.flow-material__swatches { display: grid; grid-template-columns: repeat(2,38px); gap: 7px; justify-content: end; }
.flow-material__swatches i { width: 38px; height: 38px; border-radius: 50%; background: var(--flow-blue); }
.flow-material__swatches i:nth-child(2) { background: var(--flow-lime); }.flow-material__swatches i:nth-child(3) { background: var(--flow-coral); }.flow-material__swatches i:nth-child(4) { background: #d5d9df; }.flow-material__swatches i:nth-child(5) { background: #414b55; }
.flow-language { display: grid; grid-template-columns: 240px 1fr; gap: 34px; }
.flow-language header span { color: var(--flow-coral); font-size: 11px; }
.flow-language h2 { margin-top: 0; }
.flow-conversation header { display: flex; align-items: baseline; justify-content: space-between; }
.flow-conversation__stack { margin-top: 24px; border-top: 1px solid var(--flow-line); }
.flow-conversation__item { display: grid; grid-template-columns: 45px 220px minmax(0,1fr); gap: 18px; padding: 20px 0; border-bottom: 1px solid var(--flow-line); }
.flow-conversation__item > b { color: var(--flow-coral); font-size: 12px; }.flow-conversation__item h3 { margin: 0; font-size: 15px; }.flow-conversation__item p { margin: 0; font-size: 13px; line-height: 1.9; }
.flow-journal header { display: flex; justify-content: space-between; align-items: end; margin-bottom: 20px; }
.flow-journal header a { color: var(--flow-blue); font-size: 12px; text-decoration: none; }
.flow-journal__grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 0 18px; }
.flow-news__item { padding: 17px 0; border-top: 1px solid var(--flow-ink); }
.flow-news__item time { color: var(--flow-coral); font-size: 10px; }
.flow-news__row { display: grid; grid-template-columns: 75px minmax(0,1fr); gap: 12px; margin-top: 10px; }
.flow-news__image { width: 70px; height: 70px; object-fit: contain; padding: 5px; background: #edf0e5; }
.flow-news__item h3 { margin: 0 0 7px; font-size: 15px; line-height: 1.55; }
.flow-news__body { margin: 0; font-size: 12px; line-height: 1.8; }
.flow-vision { display: grid; grid-template-columns: 200px 1fr; gap: 42px; align-items: center; }
.flow-vision__marks { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; padding: 28px 10px; border: 1px solid var(--flow-line); }
.flow-vision__mark { width: 82px; height: 82px; object-fit: contain; padding: 8px; border: 1px solid var(--flow-lime); border-radius: 50%; }
.flow-vision__essay { margin-top: 17px; max-width: 790px; }
.flow-brands__index { display: flex; gap: 15px; align-items: center; color: var(--flow-coral); }
.flow-brands h2 { margin: 9px 0 24px; }
.flow-brands__composition { display: grid; grid-template-columns: 120px minmax(0,1fr) 150px; gap: 28px; align-items: center; }
.flow-brands__tile { width: 90px; height: 90px; object-fit: contain; padding: 8px; background: var(--flow-lime); border-radius: 50%; }
.flow-brands__axis { display: flex; flex-direction: column; gap: 8px; color: var(--flow-blue); font-size: 11px; }.flow-brands__axis i { width: 24px; border-top: 1px solid var(--flow-coral); }
.flow-faq header { display: flex; align-items: baseline; justify-content: space-between; }
.flow-faq__list { margin-top: 22px; border-top: 1px solid var(--flow-ink); }
.flow-faq__item { padding: 17px 2px; border-bottom: 1px solid var(--flow-line); }
.flow-faq__item summary { cursor: pointer; font-size: 15px; list-style: none; }.flow-faq__item summary span { display: inline-block; width: 31px; color: var(--flow-coral); }
.flow-faq__item p { max-width: 940px; margin: 12px 31px 0; font-size: 13px; line-height: 1.9; }
.flow-about-page, .flow-news-page, .flow-data-page, .flow-zh-page, .flow-app-page { padding: 58px 0; }
.flow-about-page header span, .flow-news-page header span, .flow-data-page header span, .flow-zh-page header span, .flow-app-page header span { color: var(--flow-coral); font-size: 11px; letter-spacing: .12em; }
.flow-about-page h1, .flow-news-page h1, .flow-data-page h1, .flow-zh-page h1, .flow-app-page h1 { margin: 13px 0 34px; font-size: clamp(30px,4.5vw,52px); font-weight: 650; }
.flow-about-page__diagram { display: flex; align-items: center; justify-content: center; gap: 18px; min-height: 140px; margin-bottom: 30px; background: #eef0e1; }
.flow-about-page__diagram i { width: 42px; height: 42px; border: 1px solid var(--flow-blue); border-radius: 50%; }.flow-about-page__diagram i:nth-child(2) { width: 60px; height: 60px; border-color: var(--flow-coral); }.flow-about-page__diagram b { margin-left: 12px; font-size: 13px; }
.flow-about-page__notes { display: grid; grid-template-columns: 1.1fr .9fr; gap: 35px; }.flow-about-page__primary { padding-top: 20px; border-top: 2px solid var(--flow-blue); }.flow-about-page__secondary { padding: 24px; background: #f0eee7; }
.flow-news-page__columns { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 0 24px; }.flow-news-page__columns .flow-news__item { border-top-color: var(--flow-line); }
.flow-data-page__matrix { display: grid; grid-template-columns: 1.25fr .75fr; gap: 24px; }.flow-data-page__column--wide { padding: 28px; background: var(--flow-blue); color: white; }.flow-data-page__ruler { display: flex; justify-content: space-between; height: 60px; margin-top: 30px; border-bottom: 1px solid var(--flow-coral); }.flow-data-page__ruler i { width: 1px; height: 18px; background: var(--flow-coral); }
.flow-zh-page__pair { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }.flow-zh-page__terminology { padding: 20px; border: 1px solid var(--flow-line); }.flow-zh-page__context { align-self: end; padding: 25px; background: #eef0e1; }
.flow-app-page__canvas { display: grid; grid-template-columns: minmax(0,1.2fr) minmax(240px,.8fr); gap: 24px; align-items: end; }.flow-app-page__feature { padding: 30px; background: var(--flow-lime); }.flow-app-page__detail { padding: 20px 0; border-top: 2px solid var(--flow-blue); }.flow-app-page__dots { display: flex; gap: 10px; margin-top: 30px; }.flow-app-page__dots i { width: 8px; height: 8px; border-radius: 50%; background: var(--flow-coral); }
.b35-footer { padding: 28px 5vw; color: white; background: #20262d; font-size: 12px; line-height: 1.8; }.b35-footer a { margin-right: 18px; }
@media (max-width: 760px) {
  .flow-cover { grid-template-columns: 1fr; }.flow-cover__badge { display: flex; align-items: center; gap: 12px; justify-self: start; }.flow-cover__badge figcaption { margin: 0; }
  .flow-categories header, .flow-conversation header, .flow-journal header, .flow-faq header { display: block; }.flow-categories__grid { grid-template-columns: 1fr; }.flow-categories__label { border-right: 0; border-bottom: 1px solid var(--flow-line); }
  .flow-experience, .flow-reading, .flow-material, .flow-language, .flow-vision, .flow-brands__composition, .flow-about-page__notes, .flow-data-page__matrix, .flow-zh-page__pair, .flow-app-page__canvas { grid-template-columns: 1fr; }
  .flow-experience__line, .flow-reading__annotation { grid-column: 1; }.flow-material__swatches { justify-content: start; }.flow-conversation__item { grid-template-columns: 34px 1fr; }.flow-conversation__item p { grid-column: 2; }
  .flow-journal__grid, .flow-news-page__columns { grid-template-columns: 1fr; }.flow-vision__marks { justify-content: start; }.flow-brands__axis { flex-direction: row; align-items: center; }.flow-history__body { grid-template-columns: 1fr; }
}