/* Bố cục tài liệu: thanh đầu trang cố định, mục lục gập mở bên trái, nội dung giữa, "trên trang này" bên phải. */
:root {
  --ladi-color-primary: #365dff;
  --ladi-color-primary-strong: #2445d6;
  --ladi-color-primary-soft: #eef2ff;
  --ladi-color-text: #0f172a;
  --ladi-color-muted: #64748b;
  --ladi-color-line: #e6e9f0;
  --ladi-color-bg: #ffffff;
  --ladi-color-soft: #f6f7fb;
  --ladi-color-on-primary: #ffffff;
  --ladi-color-code-bg: #0f172a;
  --ladi-color-code-line: #1e293b;
  --ladi-color-code-text: #e2e8f0;
  --ladi-color-code-muted: #94a3b8;
  --ladi-color-code-key: #93c5fd;
  --ladi-color-code-str: #86efac;
  --ladi-color-code-num: #fdba74;
  --ladi-color-read: #0f6e64;
  --ladi-color-read-bg: #e3f4f0;
  --ladi-color-write: #8a5300;
  --ladi-color-write-bg: #fdf1dc;
  --ladi-color-delete: #b42318;
  --ladi-color-delete-bg: #fdeceb;
  --ladi-font-body: "Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --ladi-font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --ladi-radius: 8px;
  --ladi-header-h: 60px;
  --ink: var(--ladi-color-text);
  --royal: var(--ladi-color-primary);
  --muted: var(--ladi-color-muted);
  --line: var(--ladi-color-line);
  --tint2: var(--ladi-color-soft);
  --sh-1: 0 1px 3px rgba(15, 23, 42, .08);
  color-scheme: light;
  font-family: var(--ladi-font-body);
  color: var(--ladi-color-text);
  background: var(--ladi-color-bg);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ladi-color-primary: #7ea6ff;
    --ladi-color-primary-strong: #a8c3ff;
    --ladi-color-primary-soft: #17264a;
    --ladi-color-text: #e5e9f0;
    --ladi-color-muted: #9aa4b6;
    --ladi-color-line: #262f40;
    --ladi-color-bg: #0d1117;
    --ladi-color-soft: #161c27;
    --ladi-color-on-primary: #0d1117;
    --ladi-color-code-bg: #161c27;
    --ladi-color-code-line: #262f40;
    --ladi-color-code-text: #dbe3f0;
    --ladi-color-code-muted: #8a95a9;
    --ladi-color-code-key: #8fb8ff;
    --ladi-color-code-str: #a3e2b8;
    --ladi-color-code-num: #ffc98b;
    --ladi-color-read: #6fd6c4;
    --ladi-color-read-bg: #0f2b2a;
    --ladi-color-write: #f3c370;
    --ladi-color-write-bg: #2f2410;
    --ladi-color-delete: #ff9a90;
    --ladi-color-delete-bg: #3a1714;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --ladi-color-primary: #7ea6ff;
  --ladi-color-primary-strong: #a8c3ff;
  --ladi-color-primary-soft: #17264a;
  --ladi-color-text: #e5e9f0;
  --ladi-color-muted: #9aa4b6;
  --ladi-color-line: #262f40;
  --ladi-color-bg: #0d1117;
  --ladi-color-soft: #161c27;
  --ladi-color-on-primary: #0d1117;
  --ladi-color-code-bg: #161c27;
  --ladi-color-code-line: #262f40;
  --ladi-color-code-text: #dbe3f0;
  --ladi-color-code-muted: #8a95a9;
  --ladi-color-code-key: #8fb8ff;
  --ladi-color-code-str: #a3e2b8;
  --ladi-color-code-num: #ffc98b;
  --ladi-color-read: #6fd6c4;
  --ladi-color-read-bg: #0f2b2a;
  --ladi-color-write: #f3c370;
  --ladi-color-write-bg: #2f2410;
  --ladi-color-delete: #ff9a90;
  --ladi-color-delete-bg: #3a1714;
  color-scheme: dark;
}
* { box-sizing: border-box; }
body { margin: 0; line-height: 1.7; font-size: 15px; background: var(--ladi-color-bg); color: var(--ladi-color-text); -webkit-font-smoothing: antialiased; }
a { color: var(--ladi-color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible, button:focus-visible, input:focus-visible, summary:focus-visible { outline: 2px solid var(--ladi-color-primary); outline-offset: 2px; border-radius: 4px; }
img { max-width: 100%; height: auto; display: block; }
code, pre, kbd { font-family: var(--ladi-font-mono); }
h1, h2, h3 { text-wrap: balance; line-height: 1.25; }
.ladi-container { max-width: 1120px; margin: 0 auto; padding: 0 16px; }
main.ladi-container { padding-top: 32px; padding-bottom: 48px; }

.ladi-header { position: sticky; top: 0; z-index: 30; background: color-mix(in srgb, var(--ladi-color-bg) 88%, transparent); -webkit-backdrop-filter: saturate(180%) blur(12px); backdrop-filter: saturate(180%) blur(12px); border-bottom: 1px solid var(--ladi-color-line); }
.ladi-header__bar { display: flex; align-items: center; gap: 28px; min-height: var(--ladi-header-h); padding: 0 16px; }
.ladi-header__logo { display: inline-flex; align-items: center; gap: 8px; color: var(--ladi-color-text); font-weight: 700; font-size: 17px; white-space: nowrap; letter-spacing: -.01em; }
.ladi-header__logo:hover { text-decoration: none; }
.ladi-header__img { display: block; height: 44px; width: auto; flex: none; margin: -9px -6px -9px -6px; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .ladi-header__img { filter: brightness(0) invert(1); } }
:root[data-theme="dark"] .ladi-header__img { filter: brightness(0) invert(1); }
.ladi-header__sub { padding-left: 10px; border-left: 1px solid var(--ladi-color-line); line-height: 20px; }
.ladi-header__sub { color: var(--ladi-color-muted); font-weight: 500; }
.ladi-header__nav { display: flex; gap: 22px; overflow-x: auto; min-width: 0; scrollbar-width: none; }
.ladi-header__nav a { color: var(--ladi-color-text); font-size: 15px; font-weight: 500; white-space: nowrap; padding: 4px 0; }
.ladi-header__nav a:hover { color: var(--ladi-color-primary); text-decoration: none; }
.ladi-header__nav a[aria-current="page"] { color: var(--ladi-color-primary); }
.ladi-header__tools { display: flex; align-items: center; gap: 16px; margin-left: auto; }
.ladi-header__link { color: var(--ladi-color-text); font-size: 15px; font-weight: 500; white-space: nowrap; }
.ladi-header__theme { display: inline-grid; place-items: center; width: 34px; height: 34px; border: 0; background: transparent; color: var(--ladi-color-text); border-radius: 50%; cursor: pointer; }
.ladi-header__theme:hover { background: var(--ladi-color-soft); }
.ladi-header__theme svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; }
.ladi-search { position: relative; }
.ladi-search__box { display: flex; align-items: center; gap: 8px; width: 240px; height: 36px; border: 1px solid var(--ladi-color-line); background: var(--ladi-color-soft); border-radius: 8px; padding: 0 12px; transition: border-color .15s, box-shadow .15s, background .15s; }
.ladi-search__box:focus-within { border-color: var(--ladi-color-primary); background: var(--ladi-color-bg); box-shadow: 0 0 0 3px var(--ladi-color-primary-soft); }
.ladi-search__box svg { width: 16px; height: 16px; flex: none; fill: none; stroke: var(--ladi-color-muted); stroke-width: 2; stroke-linecap: round; }
.ladi-search__input { border: 0; outline: 0; background: transparent; color: var(--ladi-color-text); font: inherit; font-size: 14px; width: 100%; min-width: 0; }
.ladi-search__results { position: absolute; right: 0; top: calc(100% + 6px); width: min(420px, calc(100vw - 32px)); max-height: 60vh; overflow-y: auto; background: var(--ladi-color-bg); border: 1px solid var(--ladi-color-line); border-radius: 10px; box-shadow: 0 12px 32px rgba(15, 23, 42, .14); padding: 6px; list-style: none; margin: 0; }
.ladi-search__results a { display: block; padding: 8px 10px; border-radius: 6px; color: var(--ladi-color-text); font-size: 14px; line-height: 1.4; }
.ladi-search__results a:hover, .ladi-search__results a[aria-selected="true"] { background: var(--ladi-color-primary-soft); text-decoration: none; }
.ladi-search__results code { display: block; font-size: 12px; color: var(--ladi-color-muted); }
.ladi-search__empty { padding: 10px; color: var(--ladi-color-muted); font-size: 14px; }
@media (max-width: 1099px) { .ladi-header__link { display: none; } .ladi-search__box { width: 180px; } }
@media (max-width: 767px) {
  .ladi-header__bar { flex-wrap: wrap; gap: 6px 16px; padding-top: 8px; padding-bottom: 8px; }
  .ladi-header__nav { order: 3; flex-basis: 100%; gap: 18px; }
  .ladi-search__box { width: 150px; }
}

.ladi-hero { padding: 80px 0; text-align: center; }
.ladi-hero h1 { font-size: clamp(2rem, 5vw, 3rem); margin: 0 0 12px; }
.ladi-hero__lead { color: var(--ladi-color-muted); font-size: 1.125rem; max-width: 640px; margin: 0 auto 24px; }
.ladi-btn { display: inline-block; background: var(--ladi-color-primary); color: var(--ladi-color-on-primary); padding: 10px 20px; border-radius: var(--ladi-radius); font-weight: 600; }
.ladi-btn:hover { background: var(--ladi-color-primary-strong); text-decoration: none; }
.ladi-chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 16px 0 24px; }
.ladi-chips__item { border: 1px solid var(--ladi-color-line); border-radius: 999px; padding: 4px 12px; font-size: .875rem; color: var(--ladi-color-text); }
.ladi-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 24px; }
.ladi-card { border: 1px solid var(--ladi-color-line); border-radius: 12px; overflow: hidden; }
.ladi-card__body { padding: 16px; }
.ladi-card h2 { font-size: 1.125rem; margin: 0 0 8px; line-height: 1.4; }
.ladi-card h2 a { color: var(--ladi-color-text); }
.ladi-card p { color: var(--ladi-color-muted); margin: 0 0 8px; }
.ladi-card time, .ladi-post__meta { color: var(--ladi-color-muted); font-size: .875rem; }
.ladi-empty { color: var(--ladi-color-muted); }
.ladi-crumbs { color: var(--ladi-color-muted); font-size: .875rem; margin-bottom: 16px; }
.ladi-post > .ladi-crumbs, .ladi-post article, .ladi-post > section { max-width: 760px; margin-left: auto; margin-right: auto; }
.ladi-post .ladi-post__cover { border-radius: 12px; margin: 16px 0; width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.ladi-card__image img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.ladi-content h2 { margin-top: 32px; }
.ladi-post section { margin-top: 48px; }
.ladi-pager { display: flex; gap: 8px; margin-top: 32px; }
.ladi-pager a, .ladi-pager span { border: 1px solid var(--ladi-color-line); border-radius: 8px; padding: 4px 12px; }
.ladi-pager span[aria-current] { background: var(--ladi-color-primary); color: var(--ladi-color-on-primary); border-color: var(--ladi-color-primary); }
.ladi-latest { padding: 0 0 64px; }
.ladi-latest > .ladi-container > h2 { font-size: 1.5rem; margin: 0 0 24px; }
:where([data-ladi-post-products]) { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 16px; margin: 24px 0; }
:where(.ladi-post-product) { border: 1px solid var(--ladi-color-line); border-radius: 12px; overflow: hidden; display: flex; flex-direction: column; gap: 6px; padding-bottom: 12px; }
:where(.ladi-post-product__img) img { width: 100%; height: auto; aspect-ratio: 1 / 1; object-fit: cover; display: block; }
:where(.ladi-post-product__name, .ladi-post-product__price) { padding: 0 12px; margin: 0; }
:where(.ladi-post-product .ladi-btn) { margin: 0 12px; }

.ladi-footer { border-top: 1px solid var(--ladi-color-line); padding: 24px 0; color: var(--ladi-color-muted); font-size: 14px; }
.ladi-footer__bar { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px 24px; padding: 0 16px; }
.ladi-footer p { margin: 0; }
.ladi-footer nav { display: flex; flex-wrap: wrap; gap: 8px 20px; }
.ladi-footer nav a { color: var(--ladi-color-muted); }
.ladi-footer nav a:hover { color: var(--ladi-color-text); }
@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; transition: none !important; } }