/* MSRA site. Layout: a natural-history catalogue — engraved emblem hero, specimen-label product cards, a methods section and a numbered reference list. Light, white and blue only. */
:root {
  --paper: #FFFFFF;
  --paper-2: #F4F7FB;
  --ink: #141922;
  --ink-2: #464F5D;
  --muted: #778193;
  --line: #DCE3ED;
  --blue: #1F59A7;
  --blue-deep: #163F78;
  --blue-tint: #EAF0F8;
  --f-display: 'Newsreader', 'Noto Serif SC', Georgia, 'Times New Roman', serif;
  --f-body: 'IBM Plex Sans', 'Noto Sans SC', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --f-mono: 'IBM Plex Mono', 'Noto Sans SC', ui-monospace, Menlo, Consolas, monospace;
  --wrap: 1160px;
  --gutter: clamp(16px, 4vw, 40px);
  color-scheme: light;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--f-body); font-size: 16px; line-height: 1.65; -webkit-font-smoothing: antialiased; }
img { display: block; max-width: 100%; height: auto; }
a { color: var(--blue); }
a:focus-visible, button:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; border-radius: 3px; }
h1, h2, h3 { font-family: var(--f-display); font-weight: 600; color: var(--ink); margin: 0; text-wrap: balance; letter-spacing: -0.01em; }
p { margin: 0; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding-inline: var(--gutter); }
.label { font-family: var(--f-mono); font-size: 11.5px; font-weight: 500; letter-spacing: 0.12em; text-transform: uppercase; color: var(--blue); }
.lead { font-size: 18px; color: var(--ink-2); max-width: 62ch; }
section { padding-block: clamp(64px, 9vw, 112px); }
.sec-head { display: grid; gap: 14px; margin-bottom: clamp(36px, 5vw, 56px); max-width: 760px; }
.sec-head h2 { font-size: clamp(30px, 4vw, 44px); line-height: 1.12; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font: 600 14.5px var(--f-body); text-decoration: none; padding: 12px 22px; border-radius: 4px; border: 1.5px solid var(--blue); transition: background .2s, color .2s; cursor: pointer; }
.btn-solid { background: var(--blue); color: var(--paper); }
.btn-solid:hover { background: var(--blue-deep); border-color: var(--blue-deep); }
.btn-line { background: var(--paper); color: var(--blue); }
.btn-line:hover { background: var(--blue-tint); }
.btn-sm { padding: 8px 16px; font-size: 13.5px; }

/* hero */
.hero { padding-block: clamp(48px, 7vw, 88px) clamp(40px, 6vw, 72px); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: clamp(32px, 5vw, 72px); align-items: center; }
.hero h1 { font-size: clamp(40px, 6.2vw, 74px); line-height: 1.02; font-weight: 500; margin: 18px 0 26px; }
.hero h1 em { font-style: italic; color: var(--blue); font-weight: 500; }
.hero .lead { margin-bottom: 32px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.emblem { margin: 0; display: grid; gap: 14px; justify-items: center; }
.emblem img { width: min(100%, 400px); }
.emblem figcaption { font-family: var(--f-mono); font-size: 11.5px; color: var(--muted); text-align: center; max-width: 34ch; letter-spacing: 0.02em; }
.index { margin-top: clamp(44px, 6vw, 64px); padding-top: 18px; border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; gap: 6px 22px; align-items: baseline; }
.index .label { color: var(--muted); }
.index i { font-family: var(--f-display); font-size: 17px; color: var(--ink-2); }

/* manifesto */
.manifesto { background: var(--paper-2); border-block: 1px solid var(--line); }
.man-grid { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: clamp(32px, 6vw, 88px); align-items: start; }
.man-grid h2 { font-size: clamp(30px, 4vw, 46px); line-height: 1.1; margin-top: 14px; }
.man-body { display: grid; gap: 18px; color: var(--ink-2); font-size: 17px; max-width: 60ch; }
.stat { border-top: 2px solid var(--blue); padding-top: 18px; display: grid; gap: 8px; }
.stat b { font-family: var(--f-display); font-weight: 500; font-size: clamp(64px, 9vw, 104px); line-height: .95; color: var(--blue); font-variant-numeric: tabular-nums; }
.stat p { font-size: 17px; color: var(--ink); max-width: 30ch; }
.stat small { font-family: var(--f-mono); font-size: 11px; color: var(--muted); }

/* products */
.grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.card { display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: 6px; background: var(--paper); min-width: 0; }
.card-tag { display: flex; justify-content: space-between; align-items: center; gap: 10px; padding: 12px 16px; border-bottom: 1px dashed var(--line); }
.card-tag .label { color: var(--muted); font-size: 11px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; min-width: 0; }
.pill { font-family: var(--f-mono); font-size: 10.5px; font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase; padding: 3px 9px; border-radius: 999px; border: 1px solid var(--line); color: var(--muted); white-space: nowrap; }
.pill.live { background: var(--blue); border-color: var(--blue); color: var(--paper); }
.pill.next { border-color: var(--blue); color: var(--blue); }
.card-img { background: var(--paper-2); aspect-ratio: 1 / 1; overflow: hidden; max-width: 100%; }
.card-img img { width: 100%; height: 100%; object-fit: cover; }
.card-body { padding: 20px 20px 22px; display: flex; flex-direction: column; gap: 14px; flex: 1; }
.card h3 { font-size: 27px; line-height: 1.1; }
.sp { font-family: var(--f-display); font-style: italic; color: var(--blue); font-size: 15.5px; margin-top: 4px; }
.card p { font-size: 14.5px; color: var(--ink-2); }
.fact { display: grid; gap: 4px; padding-top: 12px; border-top: 1px solid var(--line); }
.fact .label { font-size: 10.5px; color: var(--muted); }
.fact p { color: var(--ink); }
.ref { font-family: var(--f-mono); font-size: 11.5px; text-decoration: none; white-space: nowrap; }
.card-foot { margin-top: auto; display: flex; justify-content: space-between; align-items: center; gap: 12px; padding-top: 16px; border-top: 1px solid var(--line); flex-wrap: wrap; }
.when { display: grid; gap: 2px; }
.when .label { font-size: 10px; color: var(--muted); }
.when b { font-family: var(--f-display); font-weight: 500; font-size: 18px; color: var(--ink); }

/* research */
.r-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(32px, 6vw, 80px); align-items: start; }
.steps { list-style: none; margin: 0; padding: 0; display: grid; }
.steps li { display: grid; grid-template-columns: 48px minmax(0, 1fr); gap: 4px 16px; padding-block: 20px; border-top: 1px solid var(--line); }
.steps li:last-child { border-bottom: 1px solid var(--line); }
.steps .n { font-family: var(--f-mono); font-size: 13px; color: var(--blue); padding-top: 4px; }
.steps h3 { font-size: 22px; line-height: 1.2; }
.steps p { grid-column: 2; color: var(--ink-2); font-size: 15.5px; }
.ai-note { display: grid; gap: 18px; }
.ai-note h3 { font-size: clamp(24px, 3vw, 32px); line-height: 1.15; }
.ai-note p { color: var(--ink-2); font-size: 16.5px; }
.nums { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 6px; overflow: hidden; margin-top: 8px; }
.nums div { background: var(--paper); padding: 18px 18px 16px; display: grid; gap: 4px; }
.nums b { font-family: var(--f-display); font-weight: 500; font-size: 40px; line-height: 1; color: var(--blue); font-variant-numeric: tabular-nums; }
.nums span { font-size: 13.5px; color: var(--ink-2); }
.nums-cap { font-family: var(--f-mono); font-size: 11px; color: var(--muted); }

/* made */
.made { background: var(--paper-2); border-block: 1px solid var(--line); }
.made-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(24px, 4vw, 48px); }
.made-grid div { display: grid; gap: 10px; align-content: start; border-top: 2px solid var(--blue); padding-top: 18px; }
.made-grid h3 { font-size: 22px; line-height: 1.2; }
.made-grid p { color: var(--ink-2); font-size: 15.5px; }

/* references */
.refs { list-style: none; margin: 0; padding: 0; counter-reset: r; display: grid; }
.refs li { display: grid; grid-template-columns: 44px minmax(0, 1fr) auto; gap: 6px 16px; padding-block: 16px; border-top: 1px solid var(--line); align-items: baseline; }
.refs li:last-child { border-bottom: 1px solid var(--line); }
.refs .n { font-family: var(--f-mono); font-size: 13px; color: var(--blue); }
.refs .t { font-size: 15px; color: var(--ink); }
.refs .t i { font-style: italic; }
.refs .m { font-family: var(--f-mono); font-size: 12px; color: var(--muted); display: block; margin-top: 2px; }
.refs .for { font-family: var(--f-mono); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); white-space: nowrap; }
.refs-note { margin-top: 18px; font-size: 14px; color: var(--muted); max-width: 70ch; }

/* contact + footer */
.contact-grid { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: clamp(28px, 5vw, 64px); align-items: end; }
.contact h2 { font-size: clamp(32px, 4.5vw, 52px); line-height: 1.08; margin-top: 14px; }
.mail { display: grid; gap: 10px; justify-items: start; }
.mail a.addr { font-family: var(--f-display); font-size: clamp(24px, 3vw, 34px); text-decoration: none; color: var(--blue); border-bottom: 1.5px solid var(--blue-tint); user-select: all; }
.mail p { color: var(--ink-2); font-size: 15px; }
footer { border-top: 1px solid var(--line); padding-block: 28px calc(28px + env(safe-area-inset-bottom, 0px)); }
.foot { display: flex; justify-content: space-between; gap: 16px 32px; flex-wrap: wrap; font-size: 13px; color: var(--muted); }
.foot p { max-width: 64ch; }

/* Chinese and Japanese typography */
:root[lang="ja"] { --f-display: 'Newsreader', 'Noto Serif JP', 'Hiragino Mincho ProN', serif; --f-body: 'IBM Plex Sans', 'Noto Sans JP', 'Hiragino Sans', system-ui, sans-serif; }
:root[lang="zh-CN"] body, :root[lang="ja"] body { line-height: 1.8; }
:root[lang="zh-CN"] .hero h1, :root[lang="ja"] .hero h1 { font-size: clamp(30px, 4.3vw, 52px); line-height: 1.18; font-weight: 600; letter-spacing: 0; }
:root[lang="zh-CN"] h1, :root[lang="zh-CN"] h2, :root[lang="zh-CN"] h3, :root[lang="ja"] h1, :root[lang="ja"] h2, :root[lang="ja"] h3 { letter-spacing: 0; }
:root[lang="zh-CN"] .hero h1 em, :root[lang="zh-CN"] .sp, :root[lang="ja"] .hero h1 em, :root[lang="ja"] .sp { font-style: normal; }
:root[lang="ja"] .loop-svg .cl { font-style: normal; }
:root[lang="ja"] h1, :root[lang="ja"] h2, :root[lang="ja"] h3, :root[lang="ja"] .pd-tag, :root[lang="ja"] .rc-title { word-break: auto-phrase; }

@media (max-width: 980px) {
  .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 760px) {
  .hero-grid, .man-grid, .r-grid, .contact-grid, .made-grid { grid-template-columns: minmax(0, 1fr); }
  .emblem { order: -1; }
  .emblem img { width: min(70%, 280px); }
  .grid { grid-template-columns: minmax(0, 1fr); }
  .brand span { display: none; }
  .refs li { grid-template-columns: 36px minmax(0, 1fr); }
  .refs .for { grid-column: 2; }
  .nav-right { gap: 6px; }
  .nav-right .btn-sm { padding: 6px 10px; font-size: 12.5px; }
}

/* loop variant */
.loop-grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(32px, 6vw, 80px); align-items: center; margin-bottom: 40px; }
.loop-fig { margin: 0; display: flex; justify-content: center; }
.loop-svg { width: 100%; max-width: 380px; height: auto; }
.loop-svg .ring { fill: none; stroke: var(--line); stroke-width: 1.5; }
.loop-svg .arc { fill: none; stroke: var(--blue); stroke-width: 2.5; }
.loop-svg .ahp { fill: var(--blue); }
.loop-svg .node { fill: var(--paper); stroke: var(--blue); stroke-width: 2; }
.loop-svg text { text-anchor: middle; }
.loop-svg .nn { font-family: var(--f-mono); font-size: 11px; fill: var(--blue); }
.loop-svg .nl { font-family: var(--f-display); font-size: 17px; fill: var(--ink); font-weight: 600; }
.loop-svg .cl { font-family: var(--f-display); font-size: 21px; font-style: italic; fill: var(--ink); }
.loop-svg .cs { font-family: var(--f-mono); font-size: 10.5px; letter-spacing: .14em; fill: var(--muted); }
:root[lang="zh-CN"] .loop-svg .cl { font-style: normal; }
.nums4 { grid-template-columns: repeat(4, minmax(0, 1fr)); margin-top: 0; }
@media (max-width: 760px) { .loop-grid { grid-template-columns: minmax(0, 1fr); } .loop-svg { max-width: 300px; } .nums4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

/* ── multi-page additions ── */
.foot-links a { color: var(--muted); text-decoration: none; }
.foot-links a:hover { color: var(--blue); }
.more { margin-top: 22px; font-size: 15px; display: flex; flex-wrap: wrap; gap: 6px 14px; }
.more a { text-decoration: none; font-weight: 500; }
.page-head { padding-block: clamp(48px, 7vw, 88px) 24px; }
.page-head h1 { font-size: clamp(36px, 5vw, 58px); line-height: 1.06; margin: 14px 0 18px; font-weight: 500; }
.page-body { padding-block: 24px clamp(64px, 9vw, 112px); }
.chip { display: inline-block; font-family: var(--f-mono); font-style: normal; font-size: 11px; letter-spacing: .06em; text-transform: uppercase; color: var(--ink-2); border: 1px solid var(--line); border-radius: 999px; padding: 2px 9px; text-decoration: none; }
.chip-link { color: var(--blue); border-color: var(--blue); }

/* post lists */
.post-list { display: grid; border-top: 1px solid var(--line); }
.post-row { display: grid; grid-template-columns: 110px minmax(0, 1fr) 24px; gap: 8px 24px; padding-block: 22px; border-bottom: 1px solid var(--line); text-decoration: none; color: var(--ink); align-items: baseline; }
.post-row:hover b { color: var(--blue); }
.pr-date { font-family: var(--f-mono); font-size: 12.5px; color: var(--muted); font-variant-numeric: tabular-nums; }
.pr-main { display: grid; gap: 6px; min-width: 0; }
.pr-main b { font-family: var(--f-display); font-weight: 600; font-size: 23px; line-height: 1.2; transition: color .2s; }
.pr-main > span { color: var(--ink-2); font-size: 15px; }
.pr-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 4px; }
.pr-go { color: var(--blue); font-size: 18px; }

/* single post */
.post-wrap { max-width: 780px; padding-block: clamp(40px, 6vw, 72px) clamp(64px, 9vw, 112px); }
.back { display: inline-block; font-size: 14px; text-decoration: none; margin-bottom: 28px; }
.post-title { font-size: clamp(34px, 4.6vw, 52px); line-height: 1.08; font-weight: 500; margin: 12px 0 18px; }
.post-meta { display: flex; flex-wrap: wrap; gap: 8px 10px; align-items: center; margin: 22px 0 36px; padding-bottom: 22px; border-bottom: 1px solid var(--line); font-size: 14px; color: var(--ink-2); }
.prose { font-size: 17.5px; line-height: 1.75; color: var(--ink); }
.prose > * + * { margin-top: 1.1em; }
.prose h2 { font-size: 28px; line-height: 1.2; margin-top: 2em; }
.prose h3 { font-size: 21px; margin-top: 1.6em; }
.prose ul, .prose ol { padding-left: 1.3em; }
.prose li + li { margin-top: .4em; }
.prose blockquote { margin: 1.4em 0; padding: 4px 0 4px 20px; border-left: 2px solid var(--blue); color: var(--ink-2); }
.prose a { text-underline-offset: 3px; }
.prose code { font-family: var(--f-mono); font-size: .88em; background: var(--paper-2); padding: 1px 5px; border-radius: 3px; }
.prose table { width: 100%; border-collapse: collapse; font-size: 15px; display: block; overflow-x: auto; }
.prose th, .prose td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); }
.prose th { font-family: var(--f-mono); font-size: 11.5px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); font-weight: 500; }
.prose img { border-radius: 4px; }
.post-refs { margin-top: 56px; }
.post-refs h2 { font-size: 24px; margin-bottom: 16px; }
.post-refs .refs li { grid-template-columns: 44px minmax(0, 1fr); }
article[lang="zh-CN"] .prose, article[lang="zh-CN"] .lead { line-height: 1.9; }
article[lang="zh-CN"] .post-title { font-weight: 600; line-height: 1.25; }

/* library */
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.filter { font: 500 13.5px var(--f-body); border: 1px solid var(--line); background: var(--paper); color: var(--ink-2); border-radius: 999px; padding: 6px 14px; cursor: pointer; }
.filter[aria-pressed="true"] { background: var(--blue); border-color: var(--blue); color: var(--paper); }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 6px; }
table.lib { width: 100%; border-collapse: collapse; font-size: 14px; min-width: 760px; }
table.lib th { text-align: left; font-family: var(--f-mono); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); font-weight: 500; padding: 12px 16px; background: var(--paper-2); border-bottom: 1px solid var(--line); }
table.lib td { padding: 16px; border-bottom: 1px solid var(--line); vertical-align: top; color: var(--ink-2); }
table.lib tr:last-child td { border-bottom: 0; }
.lib-study { display: grid; gap: 4px; min-width: 300px; }
.lib-study b { color: var(--ink); font-weight: 500; font-size: 15px; line-height: 1.4; }
.lib-study span { font-size: 13px; color: var(--muted); }
.lib-links { display: flex; flex-wrap: wrap; gap: 4px 14px; font-family: var(--f-mono); font-size: 12px; }
.lib-links a { text-decoration: none; }

@media (max-width: 760px) {
  .post-row { grid-template-columns: minmax(0, 1fr); gap: 6px; }
  .pr-go { display: none; }
}

/* open research band */
.open { background: var(--blue-tint); border-block: 1px solid var(--line); padding-block: clamp(40px, 6vw, 64px); }
.open-grid { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: clamp(24px, 4vw, 56px); align-items: center; }
.open-head { display: grid; gap: 12px; }
.open-head h2 { font-size: clamp(28px, 3.4vw, 38px); line-height: 1.12; }
.open-head p { color: var(--ink-2); font-size: 16px; }
.open-links { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.open-card { display: grid; gap: 8px; align-content: start; padding: 18px 18px 20px; background: var(--paper); border: 1px solid var(--line); border-radius: 6px; text-decoration: none; color: var(--ink); transition: border-color .2s, transform .2s; min-width: 0; }
.open-card:hover { border-color: var(--blue); }
.open-card b { font-family: var(--f-display); font-weight: 600; font-size: 19px; line-height: 1.25; }
.open-card .oc-num { font-size: 34px; color: var(--blue); font-weight: 500; }
.oc-meta { font-size: 13.5px; color: var(--muted); }

/* product card actions */
.foot-actions { display: inline-flex; align-items: center; gap: 14px; }
.link-sm { font-size: 13.5px; font-weight: 500; text-decoration: none; }

/* inquiry form */
.contact-grid { align-items: start; }
.inq-intro { display: grid; gap: 18px; }
.inq-intro .lead { font-size: 16.5px; }
.inq { display: grid; gap: 16px; padding: clamp(20px, 3vw, 28px); border: 1px solid var(--line); border-radius: 6px; background: var(--paper); min-width: 0; }
.seg { border: 0; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.seg legend { margin-bottom: 8px; color: var(--muted); }
.seg label { cursor: pointer; }
.seg input { position: absolute; opacity: 0; pointer-events: none; }
.seg span { display: inline-block; padding: 7px 14px; border: 1px solid var(--line); border-radius: 999px; font-size: 14px; color: var(--ink-2); }
.seg input:checked + span { background: var(--blue); border-color: var(--blue); color: var(--paper); }
.seg input:focus-visible + span { outline: 2px solid var(--blue); outline-offset: 2px; }
.row2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.fld { display: grid; gap: 6px; min-width: 0; }
.fld .label { color: var(--muted); font-size: 10.5px; }
.inq input[type="text"], .inq input[type="email"], .inq input[type="number"], .inq select, .inq textarea {
  width: 100%; font: 15px var(--f-body); color: var(--ink); background: var(--paper);
  border: 1px solid var(--line); border-radius: 4px; padding: 10px 12px; }
.inq input:focus, .inq select:focus, .inq textarea:focus { outline: 2px solid var(--blue); outline-offset: 0; border-color: var(--blue); }
.inq textarea { resize: vertical; }
.inq-foot { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 18px; }
.inq-note { font-size: 13px; color: var(--muted); }
.inq-status { font-size: 14.5px; color: var(--blue-deep); min-height: 1em; }
.refs-note a { margin-left: 10px; text-decoration: none; font-weight: 500; }

@media (max-width: 980px) {
  .open-grid { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 760px) {
  .open-links { grid-template-columns: minmax(0, 1fr); }
  .row2 { grid-template-columns: minmax(0, 1fr); }
}

.btn { white-space: nowrap; }
.show-sm { display: none; }
@media (max-width: 760px) { .hide-sm { display: none; } .show-sm { display: inline; } }

/* knowledge base states */
.kb-state { color: var(--muted); font-size: 15px; padding-block: 22px; }
.kb-state a { text-decoration: none; font-weight: 500; }
.post-source { margin-top: 40px; padding-top: 18px; border-top: 1px solid var(--line); font-size: 14px; color: var(--muted); }
.post-source a { text-decoration: none; font-weight: 500; }
.prose ol li, .prose ul li { padding-left: 2px; }

/* project page: sources summary */
.src-box { display: flex; justify-content: space-between; align-items: center; gap: 14px 20px; flex-wrap: wrap; padding: 16px 18px; margin: 0 0 32px; background: var(--blue-tint); border: 1px solid var(--line); border-radius: 6px; }
.src-box div { display: grid; gap: 2px; }
.src-box b { font-family: var(--f-display); font-weight: 600; font-size: 20px; }
.src-box span:not(.label) { font-size: 13.5px; color: var(--ink-2); }
.lib-proj a { text-decoration: none; font-size: 13.5px; }

/* ── languages ── */
.i18n-wait [data-i18n] { visibility: hidden; }
.lang-menu { position: relative; }
.lang-btn { display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--line); background: var(--paper); color: var(--ink-2); font: 500 12.5px var(--f-body); padding: 6px 10px; border-radius: 999px; cursor: pointer; white-space: nowrap; }
.lang-btn:hover, .lang-btn[aria-expanded="true"] { border-color: var(--blue); color: var(--blue); }
.lang-btn .caret { transition: transform .2s; }
.lang-btn[aria-expanded="true"] .caret { transform: rotate(180deg); }
.lang-list { position: absolute; right: 0; top: calc(100% + 8px); z-index: 30; list-style: none; margin: 0; padding: 6px; min-width: 168px; background: var(--paper); border: 1px solid var(--line); border-radius: 6px; box-shadow: 0 10px 30px rgba(20, 25, 34, .12); }
.lang-list button { display: flex; width: 100%; align-items: center; justify-content: space-between; gap: 12px; border: 0; background: transparent; text-align: left; font: 500 14px var(--f-body); color: var(--ink); padding: 9px 12px; border-radius: 4px; cursor: pointer; }
.lang-list button:hover, .lang-list button:focus-visible { background: var(--blue-tint); outline: none; }
.lang-list button[aria-checked="true"] { color: var(--blue); }
.lang-list button[aria-checked="true"]::after { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--blue); }
.lang-note { margin: -16px 0 28px; font-size: 14px; color: var(--muted); }

/* ── product grid (home + shop) ── */
.sec-head-row { display: flex; justify-content: space-between; align-items: end; gap: 20px 40px; max-width: none; flex-wrap: wrap; }
.sec-head-text { display: grid; gap: 14px; max-width: 760px; }
.pgrid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.pcard { display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: 6px; background: var(--paper); min-width: 0; overflow: hidden; transition: border-color .2s; }
.pcard:hover { border-color: #B9C8DD; }
.pcard[hidden] { display: none; }
.pcard-img { display: block; background: var(--paper-2); aspect-ratio: 1 / 1; overflow: hidden; }
.pcard-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.pcard:hover .pcard-img img { transform: scale(1.025); }
@media (prefers-reduced-motion: reduce) { .pcard-img img { transition: none; } .pcard:hover .pcard-img img { transform: none; } }
.pcard-body { padding: 18px 20px 20px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.pcard-top { display: flex; justify-content: space-between; align-items: center; gap: 10px; }
.pcard-top .label { color: var(--muted); font-size: 10.5px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; min-width: 0; }
.pcard h3 { font-size: 26px; line-height: 1.1; margin-top: 2px; }
.pcard h3 a { color: inherit; text-decoration: none; }
.pcard h3 a:hover { color: var(--blue); }
.pcard p { font-size: 15px; color: var(--ink-2); }
.pcard-meta { display: flex; flex-wrap: wrap; gap: 4px 8px; align-items: baseline; font-family: var(--f-mono); font-size: 12px; color: var(--muted); }
.pcard-meta .price { margin-left: auto; font-family: var(--f-display); font-size: 19px; font-weight: 500; color: var(--ink); }
.pcard-actions { margin-top: auto; padding-top: 14px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
@media (max-width: 980px) { .pgrid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 600px) { .pgrid { grid-template-columns: minmax(0, 1fr); } }

/* ── shop page ── */
.shop-head { padding-bottom: 8px; }
.shop-body .filters { margin-bottom: 24px; }
.assure { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(20px, 4vw, 48px); margin-top: clamp(56px, 8vw, 88px); }
.assure div { display: grid; gap: 8px; align-content: start; border-top: 2px solid var(--blue); padding-top: 16px; }
.assure h3 { font-size: 22px; line-height: 1.2; }
.assure p { color: var(--ink-2); font-size: 15px; }
.faq { margin-top: clamp(56px, 8vw, 88px); max-width: 780px; }
.faq h2 { font-size: clamp(26px, 3vw, 34px); margin-bottom: 14px; }
.faq details { border-top: 1px solid var(--line); }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; list-style: none; padding: 16px 32px 16px 0; font-weight: 500; font-size: 16.5px; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 4px; top: 12px; font: 400 22px var(--f-body); color: var(--blue); }
.faq details[open] summary::after { content: "–"; }
.faq details p { padding: 0 0 18px; color: var(--ink-2); max-width: 64ch; }
@media (max-width: 760px) { .assure { grid-template-columns: minmax(0, 1fr); } }

/* ── product page ── */
.pd-page { padding-block: 28px clamp(64px, 9vw, 112px); }
.pd, .pd-more { padding-block: 0; }
.crumbs { display: flex; gap: 10px; font-size: 14px; color: var(--muted); margin-bottom: 24px; }
.crumbs a { text-decoration: none; }
.pd { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(28px, 5vw, 72px); align-items: start; }
.pd-media { position: sticky; top: 88px; display: grid; gap: 10px; }
.pd-img { background: var(--paper-2); border: 1px solid var(--line); border-radius: 6px; overflow: hidden; aspect-ratio: 1 / 1; }
.pd-img img { width: 100%; height: 100%; object-fit: cover; }
.pd-code { color: var(--muted); }
.pd-info { display: grid; gap: 14px; justify-items: start; }
.pd-info h1 { font-size: clamp(38px, 5vw, 60px); line-height: 1.02; font-weight: 500; }
.pd-info .sp { margin-top: -6px; font-size: 17px; }
.pd-tag { font-family: var(--f-display); font-size: clamp(21px, 2.2vw, 25px); line-height: 1.3; color: var(--ink); max-width: 30ch; }
.pd-blurb { color: var(--ink-2); font-size: 16.5px; max-width: 54ch; }
.pd-specs { display: grid; grid-template-columns: repeat(3, minmax(0, auto)); gap: 0; margin: 6px 0 0; border: 1px solid var(--line); border-radius: 6px; width: 100%; }
.pd-specs div { padding: 12px 14px; display: grid; gap: 3px; border-left: 1px solid var(--line); min-width: 0; }
.pd-specs div:first-child { border-left: 0; }
.pd-specs dt { color: var(--muted); font-size: 10.5px; }
.pd-specs dd { margin: 0; font-size: 14.5px; color: var(--ink); }
.pd-buy { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 6px; }
.btn-lg { padding: 14px 28px; font-size: 15.5px; }
.pd-note { font-size: 14px; color: var(--muted); }
.pd-toc { list-style: none; margin: 10px 0 0; padding: 14px 0 0; border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; gap: 6px 18px; width: 100%; }
.pd-toc a { font-size: 14px; text-decoration: none; font-weight: 500; }
.pd-body { margin-top: clamp(56px, 8vw, 96px); display: grid; }
.pd-sec { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: 14px clamp(24px, 5vw, 64px); padding-block: clamp(28px, 4vw, 44px); border-top: 1px solid var(--line); scroll-margin-top: 80px; }
.pd-h { display: grid; gap: 8px; align-content: start; }
.pd-h h2 { font-size: clamp(26px, 3vw, 34px); line-height: 1.12; }
.pd-text { display: grid; gap: 14px; font-size: 17px; color: var(--ink-2); max-width: 66ch; }
.pd-list, .pd-ev { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; max-width: 70ch; }
.pd-list li, .pd-ev li { position: relative; padding-left: 22px; font-size: 16.5px; color: var(--ink-2); }
.pd-list li::before, .pd-ev li::before { content: ""; position: absolute; left: 0; top: .62em; width: 8px; height: 8px; background: var(--blue); }
.pd-ev li { color: var(--ink); }
.pd-ingr { margin: 0; display: grid; border-top: 1px solid var(--line); }
.pd-ingr div { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 4px 20px; padding-block: 14px; border-bottom: 1px solid var(--line); }
.pd-ingr dt { font-weight: 600; color: var(--ink); font-size: 15.5px; }
.pd-ingr dd { margin: 0; color: var(--ink-2); font-size: 15.5px; }
.pd-sec .refs { grid-column: 2; }
.pd-sec .refs li { grid-template-columns: 40px minmax(0, 1fr); }
.pd-sec .refs-note { grid-column: 2; margin-top: 4px; }
.pd-cta { display: flex; justify-content: space-between; align-items: center; gap: 20px; flex-wrap: wrap; margin-top: clamp(32px, 5vw, 56px); padding: clamp(22px, 3vw, 32px); background: var(--blue-tint); border: 1px solid var(--line); border-radius: 6px; }
.pd-cta h2 { font-size: clamp(26px, 3vw, 34px); }
.pd-cta p { color: var(--ink-2); margin-top: 6px; }
.pd-more { margin-top: clamp(48px, 7vw, 80px); display: grid; gap: 16px; }
.pd-more-row { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 14px; }
.mini { display: grid; gap: 10px; text-decoration: none; color: var(--ink); min-width: 0; }
.mini img { width: 100%; aspect-ratio: 1 / 1; object-fit: cover; background: var(--paper-2); border: 1px solid var(--line); border-radius: 6px; }
.mini span { display: grid; gap: 2px; }
.mini b { font-family: var(--f-display); font-weight: 600; font-size: 17px; line-height: 1.2; }
.mini:hover b { color: var(--blue); }
.mini small { font-size: 12.5px; color: var(--muted); }
@media (max-width: 860px) {
  .pd { grid-template-columns: minmax(0, 1fr); }
  .pd-media { position: static; }
  .pd-sec { grid-template-columns: minmax(0, 1fr); }
  .pd-sec .refs, .pd-sec .refs-note { grid-column: 1; }
  .pd-more-row { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 520px) {
  .pd-specs { grid-template-columns: minmax(0, 1fr); }
  .pd-specs div { border-left: 0; border-top: 1px solid var(--line); }
  .pd-specs div:first-child { border-top: 0; }
  .pd-ingr div { grid-template-columns: minmax(0, 1fr); }
  .pd-more-row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .pd-buy .btn { flex: 1 1 100%; }
}

/* ── waitlist dialog ── */
.wl { width: min(92vw, 460px); max-height: 92vh; border: 1px solid var(--line); border-radius: 8px; padding: 0; color: var(--ink); background: var(--paper); box-shadow: 0 24px 60px rgba(20, 25, 34, .22); }
.wl::backdrop { background: rgba(20, 25, 34, .45); }
.wl-x { position: absolute; top: 12px; right: 12px; border: 0; background: transparent; color: var(--muted); padding: 8px; border-radius: 4px; cursor: pointer; }
.wl-x:hover { color: var(--ink); background: var(--paper-2); }
.wl-form, .wl-done { display: grid; gap: 14px; padding: 28px 26px 24px; }
.wl-form[hidden], .wl-done[hidden] { display: none; }
.wl h2 { font-size: 27px; line-height: 1.15; padding-right: 28px; }
.wl-name { color: var(--blue); }
.wl-lead { color: var(--ink-2); font-size: 15px; }
.wl input[type="email"], .wl input[type="text"] { width: 100%; font: 16px var(--f-body); color: var(--ink); background: var(--paper); border: 1px solid var(--line); border-radius: 4px; padding: 11px 12px; }
.wl input:focus { outline: 2px solid var(--blue); outline-offset: 0; border-color: var(--blue); }
.chk { display: flex; gap: 10px; align-items: flex-start; font-size: 14px; color: var(--ink-2); cursor: pointer; }
.chk input { margin-top: 4px; accent-color: var(--blue); }
.wl-go { width: 100%; padding: 14px; font-size: 15.5px; }
.wl-fine { font-size: 12.5px; color: var(--muted); }
.wl-status { font-size: 14px; color: var(--blue-deep); }
.wl-status:empty { display: none; }
.wl-done { justify-items: start; color: var(--blue); }
.wl-done h2 { color: var(--ink); }
.wl-done p { color: var(--ink-2); }

/* ── research cards ── */
.rcards { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.rcards > .kb-state { grid-column: 1 / -1; }
.rcard { display: flex; flex-direction: column; gap: 12px; padding: 24px 24px 22px; border: 1px solid var(--line); border-radius: 6px; background: var(--paper); color: var(--ink); transition: border-color .2s; min-width: 0; }
.rcard:hover { border-color: #B9C8DD; }
.rc-top { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; }
.rc-date { font-family: var(--f-mono); font-size: 12.5px; color: var(--muted); font-variant-numeric: tabular-nums; }
.rc-tags { display: flex; gap: 6px; flex-wrap: wrap; }
.rc-title { font-family: var(--f-display); font-weight: 600; font-size: clamp(22px, 2.4vw, 27px); line-height: 1.18; color: var(--ink); text-decoration: none; }
.rc-title:hover { color: var(--blue); }
.rc-sum { color: var(--ink-2); font-size: 15.5px; }
.rc-src { font-family: var(--f-mono); font-size: 12px; color: var(--muted); }
.rc-actions { margin-top: auto; padding-top: 16px; border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; gap: 10px; }
.rp-actions { display: flex; flex-wrap: wrap; gap: 10px; margin: -14px 0 32px; }
.btn svg { flex: none; }
@media (max-width: 760px) { .rcards { grid-template-columns: minmax(0, 1fr); } }

/* ── project page: sources panel after the report ── */
.src-panel { display: flex; justify-content: space-between; align-items: center; gap: 20px 32px; flex-wrap: wrap; margin-top: 56px; padding: clamp(22px, 3vw, 30px); background: var(--blue-tint); border: 1px solid #C9D7EA; border-radius: 6px; scroll-margin-top: 80px; }
.sp-text { display: grid; gap: 8px; max-width: 46ch; }
.sp-text h2 { font-size: clamp(22px, 2.6vw, 28px); line-height: 1.18; }
.sp-text p { color: var(--ink-2); font-size: 15px; }
.sp-nums { display: flex; gap: 20px; flex-wrap: wrap; font-size: 14px; color: var(--ink-2); margin-top: 4px; }
.sp-nums b { font-family: var(--f-display); font-size: 26px; font-weight: 500; color: var(--blue); margin-right: 4px; }
.src-panel .btn { padding: 13px 22px; }
.filters .filter { white-space: nowrap; }

/* Owner-first route into the preserved technical research report. */
.knowledge-report-link { padding-top: 30px; font-size: 14px; }

/* Actual complete-body editions; every option resolves through the source registry. */