/* Blog xlxx.vn — không cần JavaScript để đọc. */
:root {
  --paper: #f6f1e7; --paper-2: #efe7d8; --ink: #1f1b16; --ink-2: #5d5549; --ink-3: #6f6657; --rule: #d8cdbb;
  --accent: #8d3d16; --mark: #ffe98a; --shadow: rgba(60, 40, 10, .14);
  --serif: "Alegreya", "Iowan Old Style", Georgia, serif; --sans: "Alegreya Sans", "Helvetica Neue", Arial, sans-serif;
  --measure: 38rem; --hdr: 52px; color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) { --paper: #17140f; --paper-2: #201c16; --ink: #ece4d5; --ink-2: #b2a795; --ink-3: #948a7a; --rule: #3b342b; --accent: #e3a06c; --mark: #5c4b12; --shadow: rgba(0, 0, 0, .5); color-scheme: dark; }
}
:root[data-theme="dark"] { --paper: #17140f; --paper-2: #201c16; --ink: #ece4d5; --ink-2: #b2a795; --ink-3: #948a7a; --rule: #3b342b; --accent: #e3a06c; --mark: #5c4b12; --shadow: rgba(0, 0, 0, .5); color-scheme: dark; }

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 1.16rem/1.68 var(--serif); font-feature-settings: "onum" 1, "kern" 1; text-rendering: optimizeLegibility; }
a { color: inherit; text-decoration-color: color-mix(in srgb, var(--accent) 55%, transparent); text-underline-offset: .18em; }
a:hover { color: var(--accent); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.skip { position: absolute; left: 16px; top: -100px; z-index: 50; background: var(--ink); color: var(--paper); padding: .5rem .8rem; border-radius: 6px; font: 500 .9rem/1 var(--sans); text-decoration: none; }
.skip:focus { top: 8px; }

/* đầu trang */
.site-head { position: sticky; top: 0; z-index: 20; height: var(--hdr); display: flex; align-items: center; gap: 1rem; padding: 0 16px; background: color-mix(in srgb, var(--paper) 92%, transparent); backdrop-filter: blur(6px); border-bottom: 1px solid var(--rule); font-family: var(--sans); }
.site-head .brand { font-weight: 500; letter-spacing: .04em; font-size: 1rem; text-decoration: none; white-space: nowrap; color: var(--ink-2); }
.site-head .brand .wm { color: var(--ink); font-weight: 700; }
.site-head nav { display: flex; gap: .9rem; font-size: .92rem; overflow-x: auto; scrollbar-width: none; }
.site-head nav a { text-decoration: none; color: var(--ink-2); white-space: nowrap; }
.site-head nav a[aria-current="page"], .site-head nav a:hover { color: var(--ink); }
.site-head .tools { margin-left: auto; display: flex; gap: .5rem; align-items: center; }
.tool { font: 500 .82rem/1 var(--sans); color: var(--ink-2); background: transparent; border: 1px solid var(--rule); border-radius: 999px; padding: .45rem .7rem; cursor: pointer; white-space: nowrap; }
.tool:hover { color: var(--ink); border-color: var(--ink-3); }
.chip { font: 500 .72rem/1 var(--sans); letter-spacing: .06em; text-transform: uppercase; border: 1px solid var(--rule); border-radius: 999px; padding: .28rem .55rem; color: var(--ink-2); white-space: nowrap; }
.chip.review { color: var(--accent); border-color: var(--accent); }

/* trang */
.page { max-width: var(--measure); margin: 0 auto; padding: 2.4rem 16px 5rem; }
.page h1 { font: 500 clamp(1.9rem, 6vw, 2.5rem)/1.12 var(--sans); margin: .3rem 0 .6rem; letter-spacing: -.01em; }
.lead { font-size: 1.2rem; }
.meta { font: 400 .86rem/1.5 var(--sans); color: var(--ink-3); margin: .2rem 0 0; }
.kicker { font: 500 .78rem/1.4 var(--sans); letter-spacing: .22em; text-transform: uppercase; color: var(--ink-2); margin: 0; }
.kicker a { text-decoration: none; }
h2.year { font: 500 .85rem/1.4 var(--sans); letter-spacing: .22em; text-transform: uppercase; color: var(--ink-2); margin: 2.6rem 0 .5rem; padding-bottom: .3rem; border-bottom: 1px solid var(--rule); }
ul.posts { list-style: none; margin: 0; padding: 0; }
ul.posts li { display: grid; grid-template-columns: 6.2rem 1fr; gap: .4rem 1rem; padding: 1rem 0; border-bottom: 1px dotted var(--rule); }
ul.posts time { font: 500 .85rem/1.6 var(--sans); color: var(--ink-3); font-variant-numeric: tabular-nums; padding-top: .25rem; }
ul.posts .t { font: 500 1.22rem/1.3 var(--sans); text-decoration: none; }
ul.posts .t:hover { color: var(--accent); text-decoration: underline; }
ul.posts .ex { margin: .35rem 0 0; color: var(--ink-2); font-size: 1.02rem; line-height: 1.55; }
ul.posts .chip { margin-left: .5rem; vertical-align: .2em; }
.about { margin-top: 3.5rem; padding-top: 1.5rem; border-top: 1px solid var(--rule); font-size: 1.02rem; color: var(--ink-2); }
.about h2 { font: 500 1.1rem/1.3 var(--sans); color: var(--ink); margin: 0 0 .6rem; }

/* bài */
.post .cover { margin: 1.6rem 0 0; }
.post .cover img { width: 100%; height: auto; border-radius: 4px; box-shadow: 0 1px 0 var(--rule); }
.post .body { margin-top: 1.8rem; padding-top: 1.4rem; border-top: 1px solid var(--rule); }
.post .body p { margin: 0 0 1.1em; overflow-wrap: anywhere; }
.post .body h2 { font: 500 1.45rem/1.25 var(--sans); margin: 2.4rem 0 .7rem; }
.post .body h3 { font: 500 1.2rem/1.3 var(--sans); margin: 2rem 0 .6rem; }
.post .body h4, .post .body h5 { font: 500 1.05rem/1.35 var(--sans); margin: 1.6rem 0 .5rem; }
.post .body blockquote { margin: 1.2rem 0 1.4rem; padding: .1rem 0 .1rem 1.1rem; border-left: 3px solid var(--rule); color: var(--ink-2); font-style: italic; }
.post .body blockquote p:last-child { margin-bottom: .4em; }
.post .body ol, .post .body ul { padding-left: 1.4rem; margin: 0 0 1.1em; }
.post .body li { margin: .3rem 0; }
.post .body li h4, .post .body li h5 { margin: .4rem 0; }
.post .body figure { margin: 1.6rem 0; text-align: center; }
.post .body figure img { max-width: 100%; height: auto; border-radius: 3px; box-shadow: 0 1px 0 var(--rule); }
.post .body figcaption { font: italic 400 .92rem/1.45 var(--serif); color: var(--ink-2); margin-top: .5rem; }
.post .body .lost { display: inline-block; font: italic 400 .9rem/1.5 var(--sans); color: var(--ink-3); border: 1px dashed var(--rule); border-radius: 6px; padding: .4rem .7rem; }
.post .body a { overflow-wrap: anywhere; }
.post .body hr.verb { border: 0; height: 1px; width: 4rem; margin: 1.6rem auto; background: var(--ink-3); }
.post article[lang="en"] .body { hyphens: auto; }
.post .note { margin-top: 2.2rem; padding-top: 1rem; border-top: 1px solid var(--rule); }
.post .note .u { font-family: var(--sans); }
.review-box { font: 400 .92rem/1.5 var(--sans); background: var(--paper-2); border-left: 3px solid var(--accent); padding: .7rem .9rem; margin: 1rem 0 0; }
.post-nav { display: flex; justify-content: space-between; gap: 1rem; margin-top: 2rem; font: 500 .95rem/1.4 var(--sans); }
.post-nav a { text-decoration: none; max-width: 48%; }
.post-nav a span { color: var(--ink-3); font-weight: 400; }
.post-nav .next { margin-left: auto; text-align: right; }

.site-foot { border-top: 1px solid var(--rule); padding: 1.6rem 16px 3rem; font: 400 .85rem/1.6 var(--sans); color: var(--ink-3); text-align: center; }
.site-foot a { color: var(--ink-2); }

@media (max-width: 700px) {
  body { font-size: 1.08rem; }
  .site-head { gap: .6rem; }
  .site-head nav a:not([aria-current]) { display: none; }
  ul.posts li { grid-template-columns: 1fr; gap: .1rem; }
  ul.posts time { padding-top: 0; }
  .post-nav { flex-direction: column; }
  .post-nav a, .post-nav .next { max-width: none; text-align: left; margin-left: 0; }
}
@media print {
  .site-head, .post-nav, .review-box, .skip { display: none !important; }
  body { background: #fff; color: #000; font-size: 11pt; }
  .page { max-width: none; padding: 0; }
  a { color: inherit; text-decoration: none; }
}