:root {
  color-scheme: light;
  --page: #f6f7f9;
  --surface: #ffffff;
  --ink: #20242c;
  --muted: #5d6572;
  --line: #d9dee6;
  --primary: #2058c4;
  --primary-soft: #eaf0fb;
  --code-bg: #171b22;
  --code-ink: #eef2f7;
  font-family: system-ui, -apple-system, "Segoe UI", "Noto Sans", sans-serif;
  line-height: 1.65;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
}

body > header,
body > main,
body > nav,
body > footer {
  width: min(56rem, calc(100% - 2.5rem));
  margin-inline: auto;
}

.site-header {
  padding: 4rem 0 2.5rem;
}

.site-kicker {
  margin: 0 0 0.5rem;
  color: var(--primary);
  font-size: 0.86rem;
  font-weight: 700;
  letter-spacing: 0.12em;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  line-height: 1.25;
  text-wrap: balance;
}

h1 { font-size: clamp(2.1rem, 5vw, 3.1rem); margin: 0 0 0.75rem; }
h2 { font-size: 1.55rem; margin-top: 2.4rem; }
h3 { font-size: 1.25rem; margin-top: 2rem; }
h4 { font-size: 1.08rem; margin-top: 1.7rem; }

p { margin: 0.85rem 0; }

a {
  color: var(--primary);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

a:hover { text-decoration-thickness: 0.16em; }

.site-header p:last-child {
  max-width: 38rem;
  color: var(--muted);
}

.note-list {
  display: grid;
  gap: 0.75rem;
  padding: 0;
  margin: 1.25rem 0 3rem;
  list-style: none;
}

.note-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.15rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 0.65rem;
}

.note-list a {
  color: var(--ink);
  font-weight: 650;
  text-decoration: none;
}

.note-list a:hover { color: var(--primary); }
.note-list time { flex: none; color: var(--muted); font-variant-numeric: tabular-nums; }

.page-nav {
  padding: 1.25rem 0 0;
}

.page-nav a {
  display: inline-block;
  padding: 0.45rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  font-size: 0.92rem;
  text-decoration: none;
}

main {
  padding-bottom: 3.5rem;
}

article {
  padding: 2rem clamp(1rem, 4vw, 2.75rem) 2.5rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 0.8rem;
}

article > :first-child { margin-top: 0; }
article > :last-child { margin-bottom: 0; }

hr {
  height: 1px;
  margin: 2.25rem 0;
  border: 0;
  background: var(--line);
}

table {
  display: block;
  max-width: 100%;
  margin: 1.25rem 0;
  overflow-x: auto;
  border-collapse: collapse;
  font-size: 0.94rem;
}

th,
td {
  min-width: 6rem;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--line);
  vertical-align: top;
}

th { background: var(--primary-soft); text-align: left; }

blockquote {
  margin: 1.25rem 0;
  padding: 0.1rem 1rem;
  border-left: 0.25rem solid var(--primary);
  background: var(--primary-soft);
  border-radius: 0 0.35rem 0.35rem 0;
}

code,
pre,
kbd,
samp {
  font-family: ui-monospace, SFMono-Regular, Consolas, "Noto Sans Mono", monospace;
}

:not(pre) > code,
kbd,
samp {
  padding: 0.16rem 0.34rem;
  border-radius: 0.28rem;
  background: #e9edf3;
  color: #26313f;
  font-size: 0.9em;
}

.codehilite,
pre {
  overflow-x: auto;
  padding: 1rem 1.1rem;
  border-radius: 0.55rem;
  background: var(--code-bg);
  color: var(--code-ink);
  line-height: 1.55;
}

pre code { padding: 0; background: transparent; color: inherit; font-size: 0.92rem; }
.codehilite pre { margin: 1.15rem 0; padding: 1rem 1.1rem; }

.codehilite .hll { background-color: #3b4048; }
.codehilite .c,
.codehilite .cm,
.codehilite .c1,
.codehilite .ch,
.codehilite .cs,
.codehilite .cd { color: #91a1b2; font-style: italic; }
.codehilite .err { color: #ff8a80; }
.codehilite .k,
.codehilite .kc,
.codehilite .kd,
.codehilite .kn,
.codehilite .kp,
.codehilite .kr,
.codehilite .ow { color: #91b5ff; font-weight: 600; }
.codehilite .o { color: #d7e3f5; }
.codehilite .s,
.codehilite .sa,
.codehilite .sb,
.codehilite .sc,
.codehilite .dl,
.codehilite .sd,
.codehilite .s2,
.codehilite .se,
.codehilite .sh,
.codehilite .si,
.codehilite .sx,
.codehilite .sr,
.codehilite .s1,
.codehilite .ss { color: #98d78d; }
.codehilite .m,
.codehilite .mb,
.codehilite .mf,
.codehilite .mh,
.codehilite .mi,
.codehilite .mo { color: #f0b073; }
.codehilite .na { color: #8fd4f0; }
.codehilite .nb,
.codehilite .bp { color: #79d0c7; }
.codehilite .nc,
.codehilite .fm { color: #d7b45f; font-weight: 600; }
.codehilite .no,
.codehilite .nv,
.codehilite .vm { color: #c9a9ff; }
.codehilite .nd,
.codehilite .ni,
.codehilite .ne,
.codehilite .nn,
.codehilite .nt,
.codehilite .nl { color: #a5c8ff; }
.codehilite .nf { color: #8fd4f0; font-weight: 600; }
.codehilite .w { color: #eef2f7; }

img,
video {
  max-width: 100%;
  height: auto;
}

footer {
  padding: 1.25rem 0 2.5rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
  text-align: center;
}

footer p { margin: 0; }

@media (max-width: 640px) {
  body > header,
  body > main,
  body > nav,
  body > footer { width: min(100% - 1.5rem, 56rem); }
  .site-header { padding-top: 2.75rem; }
  article { padding: 1.25rem 1rem 1.75rem; }
  .note-list li { align-items: flex-start; flex-direction: column; }
}

body { display: grid; grid-template-columns: 270px minmax(0, 1fr); }
.sidebar { position: sticky; top: 0; height: 100vh; padding: 32px 20px; background: #fff; border-right: 1px solid var(--line); overflow-y: auto; }
.brand { color: var(--ink); font-size: 1.6rem; font-weight: 750; text-decoration: none; }
.site-kicker { margin-top: 10px; color: var(--muted); letter-spacing: 0; font-weight: 400; }
.note-list { gap: 6px; margin-top: 28px; }
.note-list li { display: block; padding: 0; border: 0; background: transparent; }
.note-list a { display: block; padding: 12px; border-radius: 6px; font-size: .95rem; }
.note-list a:hover, .note-list a[aria-current="page"] { background: var(--primary-soft); color: var(--primary); }
.sidebar-footer { margin-top: 40px; color: var(--muted); font-size: .8rem; }
body > main { width: min(100%, 1100px); padding: 28px clamp(16px, 4vw, 56px); min-width: 0; }
.note-meta { color: var(--muted); font-size: .85rem; margin: 0 0 20px; }
article { overflow-wrap: anywhere; }
pre { overflow-x: auto; }
footer { color: var(--muted); font-size: .8rem; padding-top: 20px; }
@media (max-width: 700px) {
  body { display: block; }
  .sidebar { position: static; height: auto; padding: 20px 16px; border-right: 0; border-bottom: 1px solid var(--line); }
  .note-list { display: flex; flex-wrap: wrap; margin: 16px 0 0; }
  .note-list li { flex-direction: row; }
  .note-list a { padding: 8px 10px; }
  .sidebar-footer { display: none; }
  h1 { font-size: 2rem; }
}