/* ljh-sh/lha site — minimal, glyph-clean. */
* { box-sizing: border-box; margin: 0; padding: 0; }

html {
    font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", "Helvetica Neue", "Hiragino Sans", "Noto Sans CJK SC", "Noto Sans CJK TC", "Noto Sans CJK JP", sans-serif;
    line-height: 1.55;
    color: #1a1a1a;
    background: #fafaf7;
}

body { padding: 2rem 1rem 4rem; }
.wrap { max-width: 38rem; margin: 0 auto; }

a { color: #b04e00; text-decoration: underline; text-decoration-thickness: 0.06em; text-underline-offset: 0.15em; }
a:hover { color: #7a3500; }

h1, h2, h3 { line-height: 1.2; margin-top: 1.6em; }
h1 { font-size: 2.2rem; margin-top: 0; }
h2 { font-size: 1.4rem; border-bottom: 1px solid #d8d8d0; padding-bottom: 0.3em; }
h3 { font-size: 1.15rem; }

p, ul, ol { margin: 0.8em 0; }
ul, ol { padding-left: 1.3em; }
li { margin: 0.3em 0; }

code { font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 0.92em; background: #efece5; padding: 0.05em 0.35em; border-radius: 3px; }

pre {
    background: #1d1d1b;
    color: #f4f1ea;
    padding: 0.9em 1em;
    border-radius: 4px;
    overflow-x: auto;
    font-family: ui-monospace, "SF Mono", Menlo, monospace;
    font-size: 0.9em;
    line-height: 1.45;
}
pre code { background: none; color: inherit; padding: 0; }

.skip { position: absolute; left: -9999px; }
.skip:focus { left: 1rem; top: 1rem; background: #fff; padding: 0.5em; z-index: 10; }

.hero {
    background: linear-gradient(to bottom, #fdf6e3 0%, #fafaf7 100%);
    border: 1px solid #e6e0d0;
    border-radius: 8px;
    padding: 2rem 1.5rem 1.8rem;
    margin-bottom: 2rem;
}
.hero h1 { font-size: 2.6rem; margin-bottom: 0.2em; font-family: ui-monospace, "SF Mono", Menlo, monospace; letter-spacing: -0.02em; }
.hero .tagline { font-size: 1.1rem; color: #444; }
.hero .byline { font-size: 0.94rem; color: #555; }
.hero .cpu-note, .hero .meta { font-size: 0.88rem; color: #666; margin-top: 0.7em; }

.cta {
    display: inline-block;
    padding: 0.6em 1.1em;
    background: #b04e00;
    color: #fdf6e3 !important;
    text-decoration: none;
    border-radius: 4px;
    font-weight: 500;
    margin: 0.4em 0.4em 0.4em 0;
}
.cta:hover { background: #7a3500; }
.cta.secondary {
    background: transparent;
    border: 1px solid #b04e00;
    color: #b04e00 !important;
}
.cta.secondary:hover { background: #fdf6e3; }

.toc {
    background: #efece5;
    border-radius: 4px;
    padding: 1em 1.2em;
    margin: 1.2em 0;
}
.toc ul { margin: 0.3em 0 0; padding-left: 1.3em; }

/* Page header — section nav on the left, language switcher on the right. */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1em;
    flex-wrap: wrap;
    border-bottom: 1px solid #d8d8d0;
    padding-bottom: 0.6em;
    margin-bottom: 1.6em;
}
.page-header .section-nav {
    font-size: 0.88rem;
    color: #555;
}
.page-header .section-nav a { color: #555; margin-right: 0.6em; text-decoration: none; }
.page-header .section-nav a:hover { color: #1a1a1a; }

/* Dedicated language switcher — boxed, at the right end of the header. */
.page-header .lang-switch {
    font-size: 0.88rem;
    color: #555;
    background: #efece5;
    border: 1px solid #d8d8d0;
    border-radius: 4px;
    padding: 0.3em 0.7em;
}
.page-header .lang-switch a { color: #555; margin: 0 0.45em; text-decoration: none; }
.page-header .lang-switch a:hover { color: #1a1a1a; }
.page-header .lang-switch a[aria-current="true"] { font-weight: 600; color: #1a1a1a; }
.page-header .lang-switch strong { color: #1a1a1a; font-weight: 600; }

table {
    border-collapse: collapse;
    width: 100%;
    margin: 1em 0;
    font-size: 0.92em;
}
th, td {
    border: 1px solid #d8d8d0;
    padding: 0.45em 0.7em;
    text-align: left;
}
th { background: #efece5; font-weight: 600; }
tbody tr:nth-child(even) { background: #f6f4eb; }

.note {
    border-left: 3px solid #b04e00;
    padding: 0.5em 0 0.5em 1em;
    margin: 1em 0;
    color: #444;
    background: #fdf6e3;
}

.tldr {
    border: 1px solid #d8d8d0;
    border-left: 3px solid #b04e00;
    background: #fdf6e3;
    padding: 1em 1.2em 1em 1.4em;
    margin: 1.2em 0 1.2em 0;
    color: #333;
    font-size: 0.94em;
    line-height: 1.55;
}
.tldr p { margin: 0.4em 0; }
.tldr b { color: #1a1a1a; }

footer {
    margin-top: 3rem;
    padding-top: 1.5rem;
    border-top: 1px solid #d8d8d0;
    font-size: 0.85rem;
    color: #666;
}