*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

html {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  background: var(--color-bg);
  color: var(--color-text);
}

a {
  color: var(--color-link);
  text-decoration: none;
  transition: color 0.15s ease;
}
a:hover {
  color: var(--color-link-hover);
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0;
  line-height: 1.25;
  font-weight: 700;
}

p {
  margin: 0 0 1rem;
}

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

code,
kbd,
pre,
samp {
  font-family: var(--font-mono);
}

code {
  background: var(--color-code-bg);
  padding: 0.15em 0.4em;
  border-radius: 4px;
  font-size: 0.9em;
}

pre {
  background: var(--color-code-bg);
  padding: 1rem;
  border-radius: var(--radius);
  overflow-x: auto;
}
pre code {
  background: transparent;
  padding: 0;
}

button {
  font: inherit;
  color: inherit;
  background: transparent;
  border: 0;
  cursor: pointer;
}

:root {
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen,
    Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  --font-mono: 'SFMono-Regular', Menlo, Monaco, Consolas, 'Liberation Mono',
    'Courier New', monospace;
  --content-max: 760px;
  --gutter: 1.25rem;
  --radius: 6px;
  --color-bg: #ffffff;
  --color-bg-soft: #f8f8f8;
  --color-text: #1f1f1f;
  --color-text-soft: #5b5b5b;
  --color-muted: #8a8a8a;
  --color-border: #e6e6e6;
  --color-accent: #1e88e5;
  --color-code-bg: #f3f3f3;
  --color-link: var(--color-accent);
  --color-link-hover: #1565c0;
  --color-btn-bg: #ececec;
  --color-btn-bg-hover: #dcdcdc;
}

html.dark {
  --color-bg: #1d1e20;
  --color-bg-soft: #25262b;
  --color-text: #f5f5f5;
  --color-text-soft: #c4c4c4;
  --color-muted: #9a9a9a;
  --color-border: #2e2f33;
  --color-accent: #5fb3ff;
  --color-code-bg: #2a2b30;
  --color-link: var(--color-accent);
  --color-link-hover: #8fc8ff;
  --color-btn-bg: #2a2b30;
  --color-btn-bg-hover: #34353a;
}

.site {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.site__main {
  flex: 1;
  width: 100%;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 2.5rem var(--gutter) 3rem;
}

@media (max-width: 560px) {
  .site__main {
    padding-top: 1.5rem;
  }
}
.site-header {
  width: 100%;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: saturate(180%) blur(8px);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0.75rem var(--gutter);
}

.site-header__brand {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--color-text);
  letter-spacing: -0.01em;
}
.site-header__brand:hover {
  color: var(--color-text);
  opacity: 0.85;
}

.site-header__nav {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.site-header__link {
  color: var(--color-text-soft);
  font-size: 0.92rem;
  padding: 0.35rem 0.55rem;
  border-radius: 4px;
}
.site-header__link:hover {
  color: var(--color-text);
  background: var(--color-bg-soft);
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 4px;
  color: var(--color-text-soft);
}
.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-bg-soft);
}

.theme-toggle__icon {
  display: block;
}

.site-footer {
  border-top: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-muted);
  font-size: 0.85rem;
}

.site-footer__inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 1.5rem var(--gutter);
  text-align: center;
}

.site-footer__sep {
  opacity: 0.6;
}

.home {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.home__profile {
  text-align: left;
  padding: 2rem 0 1.75rem;
}

.home__title {
  font-size: 2.4rem;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.home__subtitle {
  font-size: 1.05rem;
  color: var(--color-text-soft);
  margin: 0 0 1.25rem;
  line-height: 1.55;
}

.home__readmore {
  white-space: nowrap;
}

.home__intro {
  color: var(--color-text-soft);
  margin: 0 0 0.75rem;
  font-size: 0.97rem;
}

.social-icons {
  display: flex;
  justify-content: flex-start;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.5rem;
}

.social-icons__btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.95rem;
  border-radius: 999px;
  background: var(--color-btn-bg);
  color: var(--color-text);
  font-size: 0.9rem;
  font-weight: 500;
  transition: background 0.15s ease;
}
.social-icons__btn:hover {
  color: var(--color-text);
  background: var(--color-btn-bg-hover);
}
.social-icons__btn svg {
  flex-shrink: 0;
}

.post-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.post-list__entry {
  padding: 1.25rem 1.25rem 1.4rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg);
  transition: background 0.15s ease, border-color 0.15s ease;
}
.post-list__entry:hover {
  background: var(--color-bg-soft);
  border-color: color-mix(in srgb, var(--color-accent) 35%, var(--color-border));
}

.post-list__header {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-bottom: 0.5rem;
}

.post-list__title {
  font-size: 1.25rem;
  line-height: 1.35;
}
.post-list__title a {
  color: var(--color-text);
  text-decoration: none;
}
.post-list__title a:hover {
  color: var(--color-accent);
}

.post-list__meta {
  color: var(--color-muted);
  font-size: 0.82rem;
}

.post-list__summary {
  color: var(--color-text-soft);
  margin: 0 0 0.5rem;
  font-size: 0.95rem;
}

.post-list__readmore {
  font-size: 0.85rem;
  font-weight: 500;
}

.post {
  padding: 1rem 0;
}

.post__header {
  margin-bottom: 1.75rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-border);
}

.post__title {
  font-size: 2rem;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

.post__meta {
  color: var(--color-muted);
  font-size: 0.85rem;
}

.post__content {
  font-size: 1.02rem;
}

.post__content h1,
.post__content h2,
.post__content h3,
.post__content h4 {
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}
.post__content h2 {
  font-size: 1.5rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--color-border);
}
.post__content h3 {
  font-size: 1.2rem;
}
.post__content p {
  margin-bottom: 1.1rem;
}
.post__content ul,
.post__content ol {
  padding-left: 1.4rem;
  margin-bottom: 1.1rem;
}
.post__content li {
  margin-bottom: 0.35rem;
}
.post__content blockquote {
  margin: 1.25rem 0;
  padding: 0.5rem 1rem;
  border-left: 3px solid var(--color-border);
  color: var(--color-text-soft);
  background: var(--color-bg-soft);
}
.post__content hr {
  border: 0;
  border-top: 1px solid var(--color-border);
  margin: 2rem 0;
}
.post__content table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.25rem;
  font-size: 0.95rem;
}
.post__content th,
.post__content td {
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--color-border);
  text-align: left;
}
.post__content th {
  background: var(--color-bg-soft);
}