:root {
  --bg: #fbfaf7;
  --surface: #ffffff;
  --surface-strong: rgba(251, 250, 247, 0.92);
  --surface-soft: #f4f2ed;
  --text: #171717;
  --muted: #62615d;
  --line: rgba(23, 23, 23, 0.12);
  --line-dark: rgba(23, 23, 23, 0.08);
  --accent: #3d6f90;
  --accent-2: #50745e;
  --glass-shadow: none;
  --glass-edge: none;
  --radius: 12px;
  --radius-sm: 8px;
}

[data-theme="dark"] {
  --bg: #0c1014;
  --surface: rgba(16, 21, 27, 0.78);
  --surface-strong: rgba(13, 18, 23, 0.9);
  --surface-soft: rgba(255, 255, 255, 0.035);
  --text: #e2e8ef;
  --muted: #8995a3;
  --line: rgba(226, 232, 239, 0.1);
  --line-dark: rgba(226, 232, 239, 0.07);
  --accent: #86a6c8;
  --accent-2: #94ad9f;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  display: flex;
  flex-direction: column;
  font-family: "SF Pro Text", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
  line-height: 1.65;
  overflow-x: hidden;
}

main {
  flex: 1;
}

[data-theme="dark"] body {
  background:
    linear-gradient(rgba(255, 255, 255, 0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.018) 1px, transparent 1px),
    var(--bg);
  background-size: 48px 48px, 48px 48px, auto;
}

.ambient-layer {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  display: none;
}

a {
  color: inherit;
  text-decoration: none;
}

code,
pre,
kbd,
table {
  font-family: "SF Mono", "Fira Code", "Consolas", "Courier New", monospace;
}

.container {
  width: min(900px, 92vw);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  background: color-mix(in srgb, var(--surface-strong) 90%, transparent);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 1px 0 var(--line-dark);
}

.nav-wrap {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text);
  letter-spacing: 0;
}

.brand img {
  width: 24px;
  height: 24px;
  border-radius: 6px;
}

.brand-text {
  display: grid;
  gap: 1px;
  line-height: 1.05;
}

.brand-main {
  font-weight: 700;
  font-size: 1rem;
}

.brand-by {
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 500;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
}

.nav-links a {
  color: var(--muted);
  transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--accent);
}

.nav-icon-link {
  width: 32px;
  height: 32px;
  display: inline-grid;
  place-items: center;
  border: 1px solid transparent;
  border-radius: 999px;
}

.nav-icon-link svg {
  width: 17px;
  height: 17px;
  fill: currentColor;
}

.nav-icon-link:hover,
.nav-icon-link:focus-visible {
  border-color: var(--line);
}

.icon-button {
  width: 32px;
  height: 32px;
  display: inline-grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  box-shadow: none;
}

.hero {
  min-height: auto;
  display: grid;
  align-items: center;
  padding: 84px 0 54px;
}

.hero-inner {
  display: block;
}

.hero-copy {
  max-width: 760px;
  animation: riseIn 0.7s ease both;
}

.eyebrow {
  font-size: 0.76rem;
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 0;
  text-transform: uppercase;
  margin: 0;
}

h1,
h2,
h3,
h4 {
  font-family: "SF Pro Display", "PingFang SC", "Microsoft YaHei", sans-serif;
  letter-spacing: 0;
  line-height: 1.2;
}

h1 {
  font-size: clamp(2.4rem, 3.2rem, 3.2rem);
  margin: 16px 0 12px;
  letter-spacing: 0;
}

.hero .sub-title {
  max-width: 680px;
  color: var(--muted);
  font-size: 1.05rem;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  color: var(--text);
  background: transparent;
  padding: 10px 16px;
  margin-top: 18px;
  border-radius: 999px;
  box-shadow: none;
  transition: border-color 0.2s, color 0.2s;
}

.btn-primary:hover,
.btn-primary:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
}

.profile-note,
.article-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
  margin-top: 28px;
  box-shadow: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

.profile-note {
  max-width: min(780px, 92vw);
  margin-top: 18px;
  margin-bottom: 52px;
}

.profile-note h2 {
  margin-top: 0;
  margin-bottom: 10px;
}

.profile-note p {
  color: var(--muted);
  margin: 0;
}

.about-page {
  padding-top: 56px;
}

.about-hero {
  max-width: 760px;
  margin-bottom: 28px;
}

.about-hero h1 {
  max-width: 720px;
  font-size: clamp(1.84rem, 2.8vw, 2.72rem);
  margin: 12px 0 14px;
}

.about-hero p:last-child {
  color: var(--muted);
  font-size: 1rem;
}

.about-profile {
  margin-left: 0;
  margin-right: auto;
}

.profile-intro {
  max-width: 560px;
}

.career-list {
  display: grid;
  gap: 12px;
  margin-top: 24px;
  padding-top: 22px;
  border-top: 1px solid var(--line-dark);
}

.career-item {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  gap: 24px;
  align-items: baseline;
}

.career-item span {
  color: var(--muted);
  font-family: "SF Mono", "Fira Code", "Consolas", "Courier New", monospace;
  font-size: 0.82rem;
}

.career-item strong {
  font-weight: 600;
}

.focus-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

.focus-list span {
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-family: "SF Mono", "Fira Code", "Consolas", "Courier New", monospace;
  font-size: 0.76rem;
  padding: 5px 10px;
}

.section-title-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 18px;
  margin-bottom: 8px;
  margin-top: 12px;
  padding-top: 34px;
  border-top: 1px solid var(--line);
}

.tools-row {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.search-box {
  min-width: min(260px, 92vw);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--muted);
  border-radius: var(--radius);
  padding: 7px 10px;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  box-shadow: none;
}

.search-box input {
  width: 100%;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--text);
  font: inherit;
}

.timeline {
  position: relative;
  display: grid;
  gap: 24px;
  padding: 6px 0 18px;
}

.post-block-list {
  display: grid;
  gap: 34px;
  padding: 8px 0 24px;
}

.post-year-section {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 44px;
}

.post-year {
  margin: 21px 0 0;
  color: var(--text);
  font-family: "SF Mono", "Fira Code", "Consolas", "Courier New", monospace;
  font-size: 0.96rem;
  font-weight: 600;
}

.post-year-items {
  display: grid;
  gap: 0;
}

.post-block {
  padding: 22px 0 24px;
  border-top: 1px solid var(--line);
  animation: riseIn 0.42s ease both;
}

.post-block:last-child {
  border-bottom: 1px solid var(--line);
}

.post-block h3 {
  margin: 0 0 10px;
  font-size: 1.34rem;
  line-height: 1.28;
}

.post-block h3 a {
  color: var(--text);
  transition: color 0.2s;
}

.post-block h3 a:hover,
.post-block h3 a:focus-visible {
  color: var(--accent);
}

.post-block p {
  max-width: 760px;
  margin: 0 0 12px;
  color: var(--muted);
}

.post-block-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  color: var(--muted);
  font-size: 0.82rem;
}

.post-block-meta span,
.post-block-meta time {
  white-space: nowrap;
}

.timeline-year-group {
  position: relative;
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 44px;
}

.timeline-year {
  position: sticky;
  top: 98px;
  align-self: start;
  margin: 22px 0 0;
  color: var(--text);
  font-family: "SF Mono", "Fira Code", "Consolas", "Courier New", monospace;
  font-size: 0.96rem;
  font-weight: 600;
}

.timeline-year-items {
  position: relative;
}

.timeline-year-items::before {
  content: none;
}

.timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: 78px minmax(0, 1fr);
  gap: 24px;
  padding: 20px 0;
  animation: riseIn 0.42s ease both;
}

.timeline-item::before {
  content: none;
}

.post-card[hidden] {
  display: none;
}

.timeline-date {
  color: var(--muted);
  font-size: 0.82rem;
  padding-top: 5px;
  font-family: "SF Mono", "Fira Code", "Consolas", "Courier New", monospace;
}

.timeline-content {
  position: relative;
  padding: 0 0 20px;
  border-bottom: 1px solid var(--line-dark);
}

.timeline-content h3 {
  margin: 2px 0 10px;
  font-size: 1.08rem;
}

.timeline-content h3 a {
  color: var(--text);
  transition: color 0.2s;
}

.timeline-content h3 a:hover,
.timeline-content h3 a:focus-visible {
  color: var(--accent);
}

.timeline-content p {
  color: var(--muted);
  margin-bottom: 14px;
  max-width: 680px;
}

.meta {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  font-size: 0.85rem;
  color: var(--muted);
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag,
.tag-btn {
  font-size: 0.75rem;
  border: 1px solid var(--line);
  color: var(--muted);
  border-radius: 999px;
  padding: 3px 9px;
  background: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

.tag-btn {
  padding: 6px 10px;
  cursor: pointer;
}

.tag-btn:hover,
.tag-btn:focus-visible,
.tag-btn.active {
  border-color: var(--accent);
  color: var(--accent);
}

.footer {
  margin-top: auto;
  margin-bottom: 40px;
  color: #8b95a7;
  font-size: 0.9rem;
}

@keyframes riseIn {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes glassDrift {
  from {
    transform: translate3d(0, 0, 0) rotate(0deg);
  }
  to {
    transform: translate3d(-18px, 16px, 0) rotate(10deg);
  }
}

.post-page {
  padding-top: 30px;
  max-width: min(900px, 92vw);
}

.back-link {
  color: var(--accent);
  font-weight: 600;
}

.article-card h1 {
  max-width: 760px;
  font-size: clamp(1.58rem, 2vw, 1.92rem);
  margin-top: 14px;
  margin-bottom: 14px;
  line-height: 1.32;
}

.article-body {
  color: var(--text);
  font-size: 0.98rem;
}

.toc-box {
  margin: 22px 0 28px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.toc-box summary {
  color: var(--text);
  cursor: pointer;
  font-weight: 600;
  list-style-position: outside;
}

.toc-box ol {
  display: grid;
  gap: 6px;
  margin: 12px 0 0;
  padding-left: 1.2em;
}

.toc-box li {
  color: var(--muted);
  font-size: 0.92rem;
}

.toc-box a {
  color: inherit;
}

.toc-box a:hover,
.toc-box a:focus-visible {
  color: var(--accent);
}

.toc-level-3 {
  margin-left: 1em;
}

.article-body h2 {
  font-size: 1.32rem;
}

.article-body h3 {
  font-size: 1.12rem;
}

.article-body h4 {
  font-size: 1.08rem;
}

.article-body h2,
.article-body h3,
.article-body h4 {
  margin-top: 1.8em;
}

.article-body p {
  color: var(--muted);
  line-height: 1.8;
}

.article-body ul {
  padding-left: 1.2em;
}

.article-body li {
  margin: 0.45em 0;
}

.article-body pre {
  background: #0f1115;
  color: #f2f5f7;
  border-radius: var(--radius);
  padding: 16px;
  overflow-x: auto;
}

.article-body code {
  font-size: 0.95rem;
}

.article-body a {
  color: var(--accent);
}

.bookmark-page {
  padding-top: 56px;
  padding-bottom: 30px;
}

.bookmark-hero {
  max-width: 780px;
  margin-bottom: 32px;
}

.bookmark-hero h1 {
  margin: 16px 0;
  font-size: clamp(1.84rem, 2.8vw, 2.72rem);
}

.bookmark-hero p:last-child {
  color: var(--muted);
  font-size: 1rem;
}

.bookmark-group {
  position: relative;
  margin: 44px 0;
  padding: 22px 26px 8px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--line);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--surface) 70%, transparent);
}

.bookmark-group h2 {
  margin: 0 0 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
  font-size: 1.32rem;
}

.bookmark-list {
  display: grid;
  gap: 0;
}

.bookmark-item {
  display: grid;
  grid-template-columns: minmax(130px, 0.7fr) minmax(190px, 0.9fr) minmax(0, 1.8fr);
  gap: 22px;
  padding: 18px 0;
  border-top: 1px solid var(--line-dark);
  transition: color 0.2s, transform 0.2s;
}

.bookmark-item:first-child {
  border-top: 0;
}

.bookmark-item:last-child {
  border-bottom: 0;
}

.bookmark-item:hover,
.bookmark-item:focus-visible {
  background: color-mix(in srgb, var(--surface-soft) 60%, transparent);
  color: var(--accent);
  transform: translateX(2px);
}

.bookmark-item span {
  color: var(--text);
  font-weight: 700;
}

.bookmark-item strong {
  color: var(--accent-2);
  font-family: "SF Mono", "Fira Code", "Consolas", "Courier New", monospace;
  font-size: 0.92rem;
  font-weight: 500;
}

.bookmark-item p {
  margin: 0;
  color: var(--muted);
}

@media (max-width: 700px) {
  .section-title-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .hero {
    padding-top: 34px;
    min-height: auto;
  }

  .hero-inner {
    display: block;
  }

  h1 {
    font-size: 2.24rem;
  }

  .nav-links {
    gap: 12px;
  }

  .brand img {
    width: 22px;
    height: 22px;
  }

  .brand-main {
    font-size: 0.94rem;
  }

  .brand-by {
    font-size: 0.62rem;
  }

  .tools-row,
  .search-box {
    width: 100%;
  }

  .profile-note {
    margin-bottom: 32px;
  }

  .career-item {
    grid-template-columns: 1fr;
    gap: 2px;
  }

  .timeline-year-group {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .post-year-section {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .post-year {
    margin: 18px 0 0;
  }

  .post-block h3 {
    font-size: 1.18rem;
  }

  .timeline-year {
    position: static;
    margin: 18px 0 0;
  }

  .timeline-year-items::before {
    content: none;
  }

  .timeline-item {
    grid-template-columns: 1fr;
    gap: 8px;
    padding-left: 30px;
  }

  .timeline-item::before {
    content: none;
  }

  .timeline-date {
    padding-top: 0;
  }

  .bookmark-page {
    padding-top: 42px;
  }

  .bookmark-group {
    margin: 32px 0;
    padding: 18px 18px 4px;
  }

  .bookmark-item {
    grid-template-columns: 1fr;
    gap: 6px;
    padding: 16px 0;
  }
}