/* Reading-first note layout — Material supplies navigation, search and TOC. */
:root {
  --md-primary-fg-color: #ffffff;
  --md-primary-fg-color--light: #ffffff;
  --md-primary-fg-color--dark: #ffffff;
  --md-accent-fg-color: #4f6fa9;
  --note-ink: #25282d;
  --note-muted: #757b84;
  --note-rule: #e7e9ed;
  --note-panel: #fafafa;
  --note-code: #fafafa;
}

[data-md-color-scheme="default"] {
  --md-default-bg-color: #ffffff;
  --md-default-fg-color: var(--note-ink);
  --md-default-fg-color--light: #555b65;
  --md-default-fg-color--lighter: #8b919a;
  --md-default-fg-color--lightest: var(--note-rule);
  --md-typeset-a-color: #4d6fa7;
}

[data-md-color-scheme="slate"] {
  --md-default-bg-color: #1d2026;
  --md-default-fg-color: #e6e8eb;
  --md-default-fg-color--light: #bcc2ca;
  --md-default-fg-color--lighter: #717985;
  --md-default-fg-color--lightest: #30353e;
  --md-typeset-a-color: #91b8ff;
  --note-muted: #a5adb8;
  --note-rule: #343a44;
  --note-panel: #252a32;
  --note-code: #272c35;
}

html { scroll-behavior: smooth; }

body,
button,
input { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif; }

.md-header {
  background-color: var(--md-default-bg-color);
  box-shadow: none;
  border-bottom: 1px solid var(--note-rule);
  color: var(--md-default-fg-color);
}

.md-header__button.md-logo,
.md-header__topic,
.md-header__button { color: var(--md-default-fg-color); }

.md-header__title { font-size: .9rem; font-weight: 600; }

.md-tabs {
  background: var(--md-default-bg-color);
  color: var(--md-default-fg-color);
  border-bottom: 1px solid var(--note-rule);
}

.md-tabs__link { color: var(--note-muted); font-size: .74rem; }
.md-tabs__link--active,
.md-tabs__link:hover { color: var(--md-default-fg-color); }

.md-search__form { background: var(--note-panel); border-radius: .4rem; }
.md-search__input { color: var(--md-default-fg-color); }

.md-main__inner { margin-top: 1.7rem; }
.md-content { max-width: 55rem; }
.md-content__inner { margin-bottom: 4rem; }

.md-typeset {
  color: var(--md-default-fg-color);
  font-size: .94rem;
  line-height: 1.78;
}

.md-typeset h1,
.md-typeset h2,
.md-typeset h3,
.md-typeset h4 {
  color: var(--md-default-fg-color);
  font-weight: 650;
  letter-spacing: -.025em;
}

.md-typeset h1 { font-size: 2.45rem; line-height: 1.2; margin: 0 0 1.25rem; }
.md-typeset h2 { font-size: 1.7rem; line-height: 1.34; margin: 2.1rem 0 .85rem; padding-bottom: .45rem; border-bottom: 1px solid var(--note-rule); }
.md-typeset h3 { font-size: 1.15rem; line-height: 1.45; margin: 1.65rem 0 .55rem; }
.md-typeset p { margin: .72em 0; }
.md-typeset a { text-decoration: underline; text-decoration-color: color-mix(in srgb, currentColor 28%, transparent); text-underline-offset: .15em; }
.md-typeset a:hover { text-decoration-color: currentColor; }

.md-nav { font-size: .76rem; line-height: 1.55; }
.md-nav__title { color: var(--md-default-fg-color); font-weight: 650; }
.md-nav__link { color: var(--note-muted); margin-top: .28rem; }
.md-nav__link--active,
.md-nav__link:hover { color: var(--md-typeset-a-color); }
.md-sidebar { padding-top: .25rem; }
.md-sidebar--primary { border-right: 1px solid var(--note-rule); }
.md-sidebar--secondary { border-left: 1px solid var(--note-rule); }

.md-typeset code {
  background: var(--note-code);
  border: 1px solid var(--note-rule);
  border-radius: .25rem;
  color: var(--md-default-fg-color);
  padding: .1em .32em;
}

.md-typeset pre > code { border: 0; border-radius: 0; padding: 0; }
.md-typeset pre { background: var(--note-code); border: 1px solid var(--note-rule); border-radius: .35rem; max-width: 100%; overflow-x: auto; }
.md-typeset pre code { font-size: .82rem; line-height: 1.6; }
.md-typeset .highlighttable { border-radius: .5rem; overflow: hidden; }

.md-typeset table:not([class]) { border: 1px solid var(--note-rule); border-radius: .35rem; display: table; overflow: hidden; }
.md-typeset table:not([class]) th { background: var(--note-panel); color: var(--md-default-fg-color); font-weight: 600; }
.md-typeset table:not([class]) td,
.md-typeset table:not([class]) th { border-color: var(--note-rule); padding: .55rem .8rem; }

.md-typeset blockquote { border-left-color: #8ca5cd; color: var(--note-muted); }
.md-typeset hr { border-bottom-color: var(--note-rule); }
.md-typeset .admonition,
.md-typeset details { border-radius: .45rem; box-shadow: none; }

/* Personal profile — quiet, compact and consistent with the reading layout. */
.about-hero {
  display: grid;
  grid-template-columns: 6.5rem minmax(0, 1fr);
  gap: 1.55rem;
  align-items: center;
  margin: 1.2rem 0 1rem;
  padding: 1.55rem;
  background: var(--note-panel);
  border: 1px solid var(--note-rule);
  border-radius: .75rem;
}

.about-avatar {
  width: 6.5rem;
  height: 6.5rem;
  object-fit: cover;
  object-position: 52% 38%;
  border-radius: 1.4rem;
  box-shadow: 0 .55rem 1.4rem color-mix(in srgb, #344d78 24%, transparent);
}

.about-intro h2 { margin: .05rem 0 .55rem; padding: 0; border: 0; }
.about-intro p { margin: .35rem 0; }
.about-eyebrow { color: var(--md-typeset-a-color); font-size: .68rem; font-weight: 750; letter-spacing: .18em; }
.about-lead { font-size: 1.04rem; font-weight: 600; }

.about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
  margin: 1rem 0 2rem;
}

.about-tags span {
  padding: .22rem .62rem;
  color: var(--note-muted);
  background: var(--note-panel);
  border: 1px solid var(--note-rule);
  border-radius: 999px;
  font-size: .72rem;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .8rem;
  margin: 1rem 0 1.35rem;
}

.md-typeset .contact-card {
  display: grid;
  grid-template-columns: 2.6rem minmax(0, 1fr) auto;
  gap: .75rem;
  align-items: center;
  padding: .9rem 1rem;
  color: var(--md-default-fg-color);
  background: var(--note-panel);
  border: 1px solid var(--note-rule);
  border-radius: .6rem;
  text-decoration: none;
  transition: border-color .16s ease, transform .16s ease, box-shadow .16s ease;
}

.md-typeset .contact-card:hover {
  border-color: color-mix(in srgb, var(--md-typeset-a-color) 55%, var(--note-rule));
  transform: translateY(-2px);
  box-shadow: 0 .35rem 1rem color-mix(in srgb, var(--md-default-fg-color) 7%, transparent);
}

.contact-icon { display: grid; place-items: center; width: 2.6rem; height: 2.6rem; background: var(--md-default-bg-color); border-radius: .55rem; font-size: 1.15rem; }
.contact-body { display: flex; flex-direction: column; min-width: 0; }
.contact-body strong { font-size: .84rem; }
.contact-body small { overflow: hidden; color: var(--note-muted); font-size: .72rem; text-overflow: ellipsis; white-space: nowrap; }
.contact-arrow { color: var(--note-muted); font-size: .78rem; }

@media screen and (min-width: 76.25em) {
  .md-grid { max-width: 90rem; }
  .md-sidebar--primary { width: 13rem; }
  .md-sidebar--secondary { width: 13rem; }
}

@media screen and (max-width: 76.1875em) {
  .md-sidebar--primary,
  .md-sidebar--secondary { border: 0; }
}

@media screen and (max-width: 44.9375em) {
  .md-main__inner { margin-top: .9rem; }
  .md-typeset { font-size: .91rem; }
  .md-typeset h1 { font-size: 2rem; }
  .md-typeset h2 { font-size: 1.48rem; margin-top: 1.7rem; }
  .md-typeset pre { margin-right: 0; margin-left: 0; border-radius: .35rem; }
  .md-typeset pre code { font-size: .76rem; }
  .about-hero { grid-template-columns: 1fr; padding: 1.2rem; }
  .about-avatar { width: 4.6rem; height: 4.6rem; border-radius: 1rem; }
  .contact-grid { grid-template-columns: 1fr; }
}