/* bntpool.com blog: the pool app's tokens (src/styles.css) as a readable single column. */
:root {
  --bg: #f6f8f2; --surface: #ffffff; --accent: #16a34a; --accent-strong: #15803d;
  --accent-light: rgba(22, 163, 74, 0.12); --accent-contrast: #f8fff9;
  --text: #1f3121; --muted: #6b7c6b; --border: rgba(33, 49, 34, 0.12); --warn: #d97706;
  --sans: 'Manrope', 'PingFang SC', 'PingFang TC', 'Microsoft YaHei', 'Microsoft JhengHei', 'Noto Sans SC', 'Noto Sans TC', system-ui, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, Menlo, Consolas, monospace;
  color-scheme: light;
}
:root[data-theme='dark'] {
  --bg: #071114; --surface: #0d181d; --accent: #57d78c; --accent-strong: #2cbd70;
  --accent-light: rgba(87, 215, 140, 0.14); --accent-contrast: #02120a;
  --text: #ecf5f0; --muted: #9cb0a8; --border: rgba(130, 160, 145, 0.18); --warn: #f7b44b;
  color-scheme: dark;
}
:lang(zh-Hant) { --sans: 'Manrope', 'PingFang TC', 'Microsoft JhengHei', 'Noto Sans TC', system-ui, sans-serif; }
:lang(zh-Hans) { --sans: 'Manrope', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif; }
:lang(ja) { --sans: 'Manrope', 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', 'Yu Gothic UI', Meiryo, 'Noto Sans JP', system-ui, sans-serif; }
:lang(ko) { --sans: 'Manrope', 'Apple SD Gothic Neo', 'Malgun Gothic', 'Noto Sans KR', system-ui, sans-serif; }
:lang(th) { --sans: 'Manrope', Thonburi, 'Leelawadee UI', 'Noto Sans Thai', Tahoma, system-ui, sans-serif; }
:lang(ar) { --sans: 'Geeza Pro', 'Segoe UI', 'Noto Sans Arabic', Tahoma, system-ui, sans-serif; }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 17px/1.65 var(--sans); -webkit-font-smoothing: antialiased; }
a { color: inherit; }
img { max-width: 100%; height: auto; }
.wrap { max-width: 1080px; margin: 0 auto; padding-inline: max(20px, env(safe-area-inset-left)) max(20px, env(safe-area-inset-right)); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.nav { position: sticky; top: 0; z-index: 10; background: var(--bg); border-bottom: 1px solid var(--border); }
.nav .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; height: 60px; }
.brand { font-weight: 700; font-size: 1.1rem; text-decoration: none; letter-spacing: -0.01em; }
.nav nav { display: flex; align-items: center; gap: 22px; font-size: 0.95rem; color: var(--muted); }
.nav nav a { text-decoration: none; }
.nav nav a:hover { color: var(--text); }
.langs { position: relative; font: 0.8rem/1 var(--mono); }
.langs summary { list-style: none; cursor: pointer; color: var(--text); padding: 7px 10px; border: 1px solid var(--border); border-radius: 8px; }
.langs summary::-webkit-details-marker { display: none; }
.langs summary::after { content: ' ▾'; color: var(--muted); }
.langs ul { position: absolute; inset-inline-end: 0; top: calc(100% + 6px); margin: 0; padding: 6px 0; list-style: none; background: var(--surface); border: 1px solid var(--border); border-radius: 10px; min-width: 190px; max-height: 70vh; overflow-y: auto; z-index: 20; font: 0.92rem/1.2 var(--sans); box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12); }
.langs li a { display: block; padding: 8px 14px; color: var(--muted); }
.langs li a:hover { background: var(--accent-light); color: var(--text); }
.langs li a[aria-current='true'] { color: var(--text); font-weight: 600; }
.lang-suggest { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 8px 20px; padding: 8px max(20px, env(safe-area-inset-left)); background: var(--surface); border-bottom: 1px solid var(--border); font-size: 0.95rem; }
.lang-suggest-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.lang-suggest .btn { padding: 7px 13px; font-size: 0.9rem; cursor: pointer; }
.lang-suggest button.btn { background: none; font-family: inherit; }
@media (max-width: 720px) { .nav .hide-sm { display: none; } }

.page-head { padding-block: 56px 26px; border-bottom: 1px solid var(--border); margin-bottom: 36px; }
.page-head:has(+ .posts) { border-bottom: 0; margin-bottom: 0; }
.page-head h1 { margin: 10px 0 0; font-size: clamp(2rem, 4.4vw, 3rem); line-height: 1.08; letter-spacing: -0.025em; font-weight: 700; max-width: 24ch; text-wrap: balance; }
.page-head .lead { margin: 12px 0 0; color: var(--muted); }
.page-head .meta, .crumbs { font: 0.82rem/1.4 var(--mono); color: var(--muted); }
.page-head .meta { margin-top: 14px; }
.crumbs a { text-decoration: none; }
:lang(zh-Hans) :is(h1, h2, h3), :lang(zh-Hant) :is(h1, h2, h3), :lang(ja) :is(h1, h2, h3) { letter-spacing: 0; word-break: normal; line-break: strict; overflow-wrap: anywhere; }
:lang(ko) :is(h1, h2, h3), :lang(th) :is(h1, h2, h3), :lang(ar) :is(h1, h2, h3) { letter-spacing: 0; }
:lang(ko) { word-break: keep-all; }
/* Arabic letters join, so no letter-spacing, and the monospace labels use the text face. */
:lang(ar) :is(.crumbs, .meta, .block-label, .posts time, .langs summary) { font-family: var(--sans); letter-spacing: 0; }

.posts { list-style: none; margin: 0; padding: 0 0 80px; }
.posts li { border-top: 1px solid var(--border); }
.posts li:last-child { border-bottom: 1px solid var(--border); }
.posts a { display: block; padding: 26px 0; text-decoration: none; }
.posts time { font: 0.82rem/1 var(--mono); color: var(--muted); }
.posts h2 { margin: 6px 0 6px; font-size: 1.4rem; letter-spacing: -0.01em; }
.posts p { margin: 0; color: var(--muted); }
.posts a:hover h2 { color: var(--accent-strong); }

.prose { max-width: 68ch; padding-bottom: 80px; }
.prose h2 { margin: 2em 0 0.5em; font-size: 1.55rem; letter-spacing: -0.015em; }
.prose h3 { margin: 1.6em 0 0.4em; font-size: 1.15rem; }
.prose a { color: var(--accent-strong); text-underline-offset: 3px; }
.prose code { direction: ltr; unicode-bidi: isolate; font: 0.9em var(--mono); background: var(--accent-light); padding: 1px 5px; border-radius: 5px; }
.prose pre { direction: ltr; text-align: left; background: #0f1b20; color: #ecf5f0; border-radius: 10px; padding: 16px 18px; overflow-x: auto; }
.prose pre code { background: none; padding: 0; color: inherit; }
.prose table { border-collapse: collapse; display: block; overflow-x: auto; margin: 1.4em 0; font-size: 0.95rem; }
.prose th, .prose td { border-bottom: 1px solid var(--border); padding-block: 9px; padding-inline: 0 16px; text-align: start; }
.prose th { border-bottom-color: var(--muted); }
.prose h2[id], .prose h3[id] { scroll-margin-top: 80px; }

.block { margin: 1.6em 0; padding: 14px 18px; border-radius: 10px; background: var(--surface); border: 1px solid var(--border); border-inline-start: 3px solid var(--border); }
.block > :last-child { margin-bottom: 0; }
.block-label { font: 600 0.72rem/1 var(--mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); margin-bottom: 8px; }
.block.answer { border-inline-start-color: var(--accent); }
.block.answer .block-label { color: var(--accent-strong); }
.block.warning { border-inline-start-color: var(--warn); }

.faq, .related { margin-top: 2.6em; padding-top: 1.4em; border-top: 1px solid var(--border); }
.faq h2, .related h2 { margin-top: 0; }
.faq h3 { font-size: 1.05rem; margin: 1.2em 0 0.3em; }
.faq p { margin: 0; }
.cta { margin: 2.2em 0 0; padding: 18px 20px; border-radius: 12px; background: var(--surface); border: 1px solid var(--border); display: grid; grid-template-columns: 48px minmax(0, 1fr) auto; gap: 12px 18px; align-items: center; }
.cta-icon { width: 48px; height: 48px; border-radius: 10px; }
.cta-copy { display: grid; gap: 2px; min-width: 0; }
.cta-copy b { font-size: 1.08rem; }
.cta-copy span { color: var(--muted); font-size: 0.95rem; }
.btn { display: inline-block; padding: 10px 16px; border-radius: 9px; border: 1px solid var(--border); text-decoration: none; font-weight: 600; font-size: 0.95rem; color: var(--text); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-contrast); }
.prose .cta a.primary { color: var(--accent-contrast); text-decoration: none; }
@media (max-width: 640px) { .cta { grid-template-columns: 48px minmax(0, 1fr); align-items: start; } .cta .btn { grid-column: 1 / -1; justify-self: start; } }

footer { border-top: 1px solid var(--border); padding-block: 30px 44px; color: var(--muted); font-size: 0.92rem; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 12px 32px; justify-content: space-between; }
footer nav { display: flex; flex-wrap: wrap; gap: 8px 20px; }
footer a { text-decoration: none; }
footer a:hover { color: var(--text); }