:root {
  color-scheme: light;
  --ink: #111a32;
  --muted: #62708c;
  --paper: #f4f6fb;
  --surface: #ffffff;
  --line: #dfe5f0;
  --accent: #315efb;
  --accent-strong: #2249d6;
  --signal: #dffb75;
  --shadow: 0 18px 50px rgb(17 26 50 / 9%);
}

* {
  box-sizing: border-box;
}

html {
  background: var(--paper);
}

body {
  min-width: 320px;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 8% 0%, rgb(223 251 117 / 52%), transparent 26rem),
    radial-gradient(circle at 96% 4%, rgb(49 94 251 / 14%), transparent 29rem),
    var(--paper);
  font-family: Inter, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.65;
}

a {
  color: inherit;
  text-underline-offset: 0.16em;
}

a:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
}

.shell {
  width: min(1120px, calc(100% - 2.5rem));
  margin-inline: auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 5.25rem;
  border-bottom: 1px solid rgb(17 26 50 / 12%);
}

.brand {
  display: inline-flex;
  gap: 0.65rem;
  align-items: center;
  color: var(--ink);
  font-size: 1.05rem;
  font-weight: 760;
  letter-spacing: -0.035em;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 2rem;
  height: 2rem;
  place-items: center;
  border-radius: 0.62rem;
  color: var(--ink);
  background: var(--signal);
  font-size: 1rem;
  font-weight: 900;
}

.site-nav {
  display: flex;
  gap: 1.15rem;
  align-items: center;
}

.site-nav a {
  position: relative;
  color: var(--muted);
  font-size: 0.94rem;
  font-weight: 650;
  text-decoration: none;
}

.site-nav a::after {
  position: absolute;
  right: 0;
  bottom: -0.38rem;
  left: 0;
  height: 2px;
  content: "";
  background: currentcolor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 180ms ease;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--accent);
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after,
.site-nav a[aria-current="page"]::after {
  transform: scaleX(1);
  transform-origin: left;
}

.page-content {
  padding-block: clamp(3.8rem, 9vw, 7rem) 5rem;
}

.intro {
  position: relative;
  isolation: isolate;
  max-width: 50rem;
  --intro-glow-x: 58%;
  --intro-glow-y: 42%;
}

.intro::before {
  position: absolute;
  top: var(--intro-glow-y);
  left: var(--intro-glow-x);
  z-index: -1;
  width: min(34rem, 86vw);
  aspect-ratio: 1;
  content: "";
  pointer-events: none;
  background: radial-gradient(circle, rgb(223 251 117 / 40%), rgb(223 251 117 / 12%) 36%, transparent 70%);
  opacity: 0.36;
  transform: translate(-50%, -50%);
  transition: opacity 240ms ease;
}

.intro.has-pointer-glow::before {
  opacity: 0.72;
}

@keyframes intro-aura-breathe {
  0%,
  100% {
    transform: translate(-50%, -50%) scale(0.96);
  }

  50% {
    transform: translate(-50%, -50%) scale(1.04);
  }
}

.eyebrow {
  margin: 0 0 1.05rem;
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.13em;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

.intro h1,
.article-title,
.error-page h1 {
  margin-bottom: 1rem;
  font-size: clamp(2.75rem, 7vw, 6.25rem);
  font-weight: 820;
  letter-spacing: -0.075em;
  line-height: 0.94;
}

.intro-copy {
  max-width: 35rem;
  margin-bottom: 0;
  color: var(--muted);
  font-size: clamp(1.05rem, 2.2vw, 1.3rem);
}

.post-section {
  margin-top: clamp(3.5rem, 8vw, 6.4rem);
}

.section-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.2rem;
}

.section-heading h2 {
  margin-bottom: 0;
  font-size: 1.2rem;
  letter-spacing: -0.03em;
}

.muted,
.post-meta {
  color: var(--muted);
  font-size: 0.86rem;
}

.post-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.1rem;
}

.post-card {
  display: flex;
  min-height: 15.5rem;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 1.15rem;
  background: var(--surface);
  box-shadow: var(--shadow);
  transition: border-color 220ms ease, box-shadow 220ms ease, transform 220ms ease;
}

.post-card-content {
  display: flex;
  flex: 1;
  flex-direction: column;
  align-items: flex-start;
  padding: 1.65rem;
}

.post-meta {
  margin-bottom: 1.3rem;
}

.post-title {
  margin-bottom: 0.8rem;
  font-size: clamp(1.25rem, 2.5vw, 1.6rem);
  letter-spacing: -0.045em;
  line-height: 1.2;
}

.post-link {
  text-decoration: none;
}

.post-link:hover {
  color: var(--accent);
}

.post-excerpt {
  margin-bottom: 1.2rem;
  color: var(--muted);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  padding: 0;
  margin: auto 0 0;
  list-style: none;
}

.tag {
  padding: 0.22rem 0.56rem;
  border: 1px solid #c8d3ff;
  border-radius: 999px;
  color: var(--accent-strong);
  background: #edf1ff;
  font-size: 0.75rem;
  font-weight: 700;
}

.post-cover {
  width: 38%;
  min-width: 10rem;
  object-fit: cover;
  transform: scale(1);
  transition: transform 360ms cubic-bezier(0.2, 0.75, 0.3, 1);
}

.post-card:focus-within {
  border-color: rgb(49 94 251 / 42%);
  box-shadow: 0 24px 58px rgb(17 26 50 / 14%);
  transform: translateY(-0.25rem);
}

@media (hover: hover) and (pointer: fine) {
  .post-card:hover {
    border-color: rgb(49 94 251 / 42%);
    box-shadow: 0 24px 58px rgb(17 26 50 / 14%);
    transform: translateY(-0.38rem);
  }

  .post-card:hover .post-cover {
    transform: scale(1.035);
  }
}

@media (prefers-reduced-motion: no-preference) {
  .intro::before {
    animation: intro-aura-breathe 6s ease-in-out infinite;
  }

  .motion-reveal {
    opacity: 0;
    transform: translateY(0.9rem);
    transition: opacity 360ms ease var(--reveal-delay), transform 360ms ease var(--reveal-delay);
  }

  .motion-reveal.is-revealed {
    opacity: 1;
    transform: translateY(0);
  }
}

.site-footer {
  padding-block: 1.8rem 2.8rem;
  border-top: 1px solid rgb(17 26 50 / 12%);
  color: var(--muted);
  font-size: 0.83rem;
}

.article-shell {
  max-width: 52rem;
  padding-block: clamp(2.6rem, 6vw, 4.5rem) 5rem;
}

.back-link {
  display: inline-block;
  margin-bottom: 3rem;
  color: var(--accent);
  font-size: 0.95rem;
  font-weight: 700;
  text-decoration: none;
}

.article-header {
  margin-bottom: 2.2rem;
}

.article-title {
  margin-bottom: 1.15rem;
  font-size: clamp(2.5rem, 6vw, 4.85rem);
  line-height: 1.02;
}

.article-lead {
  max-width: 42rem;
  margin-bottom: 1.35rem;
  color: var(--muted);
  font-size: 1.18rem;
}

.article-cover,
.article-inline-image {
  display: block;
  width: 100%;
  border-radius: 1rem;
  object-fit: cover;
}

.article-cover {
  max-height: 34rem;
  margin-bottom: 2.4rem;
}

.article-inline-image {
  margin-block: 1.8rem;
}

.article-body {
  color: #27324b;
  font-size: 1.08rem;
}

.article-paragraph,
.article-quote {
  white-space: pre-line;
}

.article-paragraph {
  margin-bottom: 1.25rem;
}

.article-heading {
  margin: 2.3rem 0 1rem;
  color: var(--ink);
  font-size: clamp(1.35rem, 3vw, 1.9rem);
  letter-spacing: -0.04em;
}

.article-list {
  display: grid;
  gap: 0.45rem;
  padding-left: 1.35rem;
  margin-block: 1.2rem;
}

.article-quote {
  margin: 1.6rem 0;
  padding: 0.8rem 1.05rem;
  border-left: 0.3rem solid var(--signal);
  color: var(--muted);
  background: rgb(223 251 117 / 24%);
}

.status-message {
  padding: 1.2rem;
  border: 1px dashed #aab5ca;
  border-radius: 0.85rem;
  color: var(--muted);
}

.comments {
  margin-top: clamp(3.8rem, 8vw, 5.8rem);
  padding-top: clamp(2.4rem, 5vw, 3.5rem);
  border-top: 1px solid rgb(17 26 50 / 14%);
}

.comments-header {
  display: flex;
  gap: 1.4rem;
  align-items: end;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.comments-header .eyebrow {
  margin-bottom: 0.45rem;
}

.comments-header h2 {
  margin-bottom: 0;
  font-size: clamp(1.7rem, 4vw, 2.25rem);
  letter-spacing: -0.055em;
}

.comments-note {
  max-width: 18rem;
  margin-bottom: 0.15rem;
  color: var(--muted);
  font-size: 0.9rem;
  text-align: right;
}

.comment-list {
  display: grid;
  gap: 0.8rem;
  margin-bottom: 1.4rem;
}

.comment-card {
  padding: 1.1rem 1.2rem;
  border: 1px solid var(--line);
  border-radius: 0.95rem;
  background: var(--surface);
}

.comment-card-header {
  display: flex;
  gap: 0.8rem;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 0.55rem;
}

.comment-author {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 760;
}

.comment-date {
  margin: 0;
  color: var(--muted);
  font-size: 0.78rem;
}

.comment-body {
  margin: 0;
  color: #27324b;
  overflow-wrap: anywhere;
  white-space: pre-wrap;
}

.comment-empty {
  margin: 0;
  padding: 1.1rem 1.2rem;
  border: 1px dashed #aab5ca;
  border-radius: 0.85rem;
  color: var(--muted);
}

.load-more-comments {
  display: block;
  width: 100%;
  min-height: 2.65rem;
  margin: -0.45rem 0 1.4rem;
  border: 1px solid #bdc8da;
  border-radius: 0.68rem;
  color: var(--accent-strong);
  background: transparent;
  font: inherit;
  font-size: 0.9rem;
  font-weight: 740;
  cursor: pointer;
}

.load-more-comments:hover:not(:disabled) {
  border-color: var(--accent);
  color: white;
  background: var(--accent);
}

.load-more-comments:disabled {
  cursor: wait;
  opacity: 0.65;
}

.comment-form {
  padding: clamp(1.2rem, 4vw, 1.7rem);
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: rgb(255 255 255 / 72%);
  box-shadow: 0 10px 30px rgb(17 26 50 / 5%);
}

.comment-fields {
  display: grid;
  gap: 1rem;
}

.comment-label {
  display: grid;
  gap: 0.42rem;
  color: var(--ink);
  font-size: 0.9rem;
  font-weight: 720;
}

.comment-input,
.comment-textarea {
  width: 100%;
  border: 1px solid #bdc8da;
  border-radius: 0.68rem;
  color: var(--ink);
  background: var(--surface);
  font: inherit;
  font-weight: 450;
}

.comment-input {
  min-height: 2.65rem;
  padding: 0.55rem 0.72rem;
}

.comment-textarea {
  min-height: 7.6rem;
  padding: 0.68rem 0.72rem;
  resize: vertical;
}

.comment-input:focus,
.comment-textarea:focus {
  border-color: var(--accent);
  outline: 3px solid rgb(49 94 251 / 16%);
}

.turnstile-container {
  min-height: 0;
  margin-top: 1rem;
}

.comment-form-footer {
  display: flex;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  margin-top: 1.1rem;
}

.comment-form-status {
  margin: 0;
  color: var(--muted);
  font-size: 0.86rem;
}

.comment-form-status[data-state="error"] {
  color: #a23c3c;
}

.comment-form-status[data-state="success"] {
  color: #26784b;
}

.comment-submit {
  flex: 0 0 auto;
  min-height: 2.65rem;
  padding: 0.52rem 0.95rem;
  border: 0;
  border-radius: 0.68rem;
  color: white;
  background: var(--accent);
  font: inherit;
  font-weight: 760;
  cursor: pointer;
}

.comment-submit:hover:not(:disabled) {
  background: var(--accent-strong);
}

.comment-submit:disabled {
  cursor: not-allowed;
  opacity: 0.54;
}

.error-page {
  padding-block: 18vh;
}

.button-link {
  display: inline-block;
  padding: 0.65rem 1rem;
  border-radius: 0.65rem;
  color: white;
  background: var(--accent);
  font-weight: 750;
  text-decoration: none;
}

.button-link:hover {
  background: var(--accent-strong);
}

@media (max-width: 720px) {
  .shell {
    width: min(100% - 1.6rem, 1120px);
  }

  .site-header {
    min-height: 4.6rem;
  }

  .post-grid {
    grid-template-columns: 1fr;
  }

  .post-card {
    min-height: auto;
    flex-direction: column-reverse;
  }

  .post-cover {
    width: 100%;
    min-width: 0;
    height: 13rem;
  }

  .post-card-content {
    min-height: 13rem;
  }

  .intro h1,
  .article-title,
  .error-page h1 {
    letter-spacing: -0.06em;
  }

  .comments-header,
  .comment-form-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .comments-note {
    max-width: none;
    text-align: left;
  }

  .comment-submit {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .intro::before {
    display: none;
  }

  .site-nav a::after,
  .post-card,
  .post-cover,
  .motion-reveal {
    transition: none;
  }

  .post-card:focus-within,
  .motion-reveal {
    opacity: 1;
    transform: none;
  }
}

/* Archive interface */

:root {
  --paper-deep: #e8edf7;
  --ink-soft: #27324b;
  --surface-muted: #f8faff;
  --signal-ink: #7a8f13;
  --radius-large: 1.45rem;
  --radius-medium: 0.9rem;
  --page-gutter: clamp(1.1rem, 3vw, 2.5rem);
  --motion-fast: 180ms;
  --motion-base: 280ms;
  --motion-slow: 640ms;
}

body {
  background:
    radial-gradient(circle at 8% 0%, rgb(223 251 117 / 48%), transparent 26rem),
    radial-gradient(circle at 96% 4%, rgb(49 94 251 / 14%), transparent 29rem),
    linear-gradient(115deg, rgb(255 255 255 / 28%), transparent 40%),
    var(--paper);
}

.skip-link {
  position: fixed;
  top: 0.7rem;
  left: 0.7rem;
  z-index: 100;
  padding: 0.55rem 0.75rem;
  border-radius: 0.55rem;
  color: var(--ink);
  background: var(--signal);
  font-weight: 750;
  text-decoration: none;
  transform: translateY(-180%);
  transition: transform var(--motion-fast) ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: relative;
  z-index: 10;
}

.site-nav {
  gap: clamp(0.7rem, 2vw, 1.25rem);
}

.site-nav a {
  white-space: nowrap;
}

.page-content,
.archive-page,
.about-page {
  padding-block: clamp(3.2rem, 8vw, 6.5rem) 5rem;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(16rem, 0.7fr);
  gap: clamp(2rem, 7vw, 6rem);
  align-items: end;
  min-height: min(41rem, 68vh);
}

.hero-copy {
  max-width: 43rem;
}

.chapter-label,
.archive-code,
.card-kicker,
.signal-label,
.toc-title,
.post-navigation-label,
.archive-row-index {
  margin: 0;
  color: var(--muted);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  line-height: 1.5;
  text-transform: uppercase;
}

.chapter-label {
  width: fit-content;
  margin-bottom: 0.9rem;
  padding: 0.25rem 0.52rem;
  border: 1px solid rgb(17 26 50 / 13%);
  border-radius: 999px;
  color: var(--ink-soft);
  background: rgb(255 255 255 / 45%);
}

.hero .intro-copy {
  max-width: 37rem;
}

.hero-actions,
.article-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  align-items: center;
  margin-top: 2rem;
}

.button-link,
.text-button {
  min-height: 2.75rem;
  border-radius: 999px;
  font: inherit;
  font-size: 0.9rem;
  font-weight: 760;
  line-height: 1;
}

.button-link {
  padding: 0.82rem 1.08rem;
  box-shadow: 0 12px 25px rgb(49 94 251 / 17%);
  transition: transform var(--motion-fast) ease, background var(--motion-fast) ease, box-shadow var(--motion-fast) ease;
}

.button-link:hover {
  box-shadow: 0 16px 32px rgb(49 94 251 / 25%);
  transform: translateY(-0.12rem);
}

.text-button {
  padding: 0.72rem 0.3rem;
  border: 0;
  color: var(--accent-strong);
  background: transparent;
  cursor: pointer;
  text-align: left;
  transition: color var(--motion-fast) ease, transform var(--motion-fast) ease;
}

.text-button:hover {
  color: var(--ink);
  transform: translateX(0.12rem);
}

.text-link {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.signal-panel {
  position: relative;
  overflow: hidden;
  padding: clamp(1.3rem, 3vw, 1.75rem);
  border: 1px solid rgb(17 26 50 / 12%);
  border-radius: var(--radius-large);
  background: rgb(255 255 255 / 60%);
  box-shadow: 0 20px 50px rgb(17 26 50 / 7%);
  backdrop-filter: blur(14px);
}

.signal-panel::after {
  position: absolute;
  right: -3rem;
  bottom: -3rem;
  width: 9rem;
  height: 9rem;
  border-radius: 50%;
  content: "";
  background: radial-gradient(circle, rgb(49 94 251 / 21%), transparent 69%);
  pointer-events: none;
}

.signal-label {
  display: flex;
  gap: 0.55rem;
  align-items: center;
  color: var(--signal-ink);
}

.signal-dot {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 0.28rem rgb(223 251 117 / 29%);
}

.signal-copy {
  position: relative;
  z-index: 1;
  margin: 1rem 0 1.45rem;
  color: var(--ink);
  font-size: 1.06rem;
  font-weight: 620;
  line-height: 1.7;
}

.now-list {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.55rem 0.8rem;
  margin: 0;
}

.now-list dt {
  color: var(--muted);
  font-size: 0.78rem;
}

.now-list dd {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.83rem;
  overflow-wrap: anywhere;
}

.feature-section,
.archive-preview {
  margin-top: clamp(4.7rem, 10vw, 8rem);
}

.section-heading {
  align-items: end;
  margin-bottom: 1.35rem;
}

.section-heading h2 {
  font-size: clamp(1.6rem, 3vw, 2.15rem);
}

.section-heading .eyebrow {
  margin-bottom: 0.55rem;
}

.section-note {
  max-width: 15rem;
  margin: 0 0 0.2rem;
  color: var(--muted);
  font-size: 0.86rem;
  text-align: right;
}

.section-link {
  color: var(--accent-strong);
  font-size: 0.9rem;
  font-weight: 760;
  text-decoration: none;
}

.featured-card {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(15rem, 0.9fr);
  min-height: 25rem;
  overflow: hidden;
  border: 1px solid rgb(17 26 50 / 13%);
  border-radius: clamp(1.25rem, 3vw, 2rem);
  background:
    linear-gradient(140deg, rgb(255 255 255 / 93%), rgb(246 249 255 / 86%)),
    var(--surface);
  box-shadow: 0 28px 70px rgb(17 26 50 / 10%);
}

.featured-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: clamp(1.6rem, 5vw, 4rem);
}

.post-card-topline,
.article-topline {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  align-items: center;
}

.section-badge,
.post-kind {
  display: inline-flex;
  align-items: center;
  min-height: 1.65rem;
  padding: 0.2rem 0.53rem;
  border-radius: 999px;
  font-size: 0.69rem;
  font-weight: 780;
  letter-spacing: 0.035em;
  line-height: 1;
  text-decoration: none;
}

[data-accent="lime"] {
  --local-accent: #617713;
  --local-tint: #f0fbc4;
}

[data-accent="blue"] {
  --local-accent: #315efb;
  --local-tint: #eaf0ff;
}

[data-accent="violet"] {
  --local-accent: #7451bb;
  --local-tint: #f0eaff;
}

[data-accent="orange"] {
  --local-accent: #b76422;
  --local-tint: #fff0df;
}

[data-accent="ink"] {
  --local-accent: #3d4a66;
  --local-tint: #edf0f6;
}

.section-badge {
  border: 1px solid color-mix(in srgb, var(--local-accent, var(--accent)) 22%, white);
  color: var(--local-accent, var(--accent-strong));
  background: var(--local-tint, #edf1ff);
}

.section-badge:hover {
  color: var(--ink);
}

.post-kind {
  border: 1px solid rgb(17 26 50 / 10%);
  color: var(--muted);
  background: rgb(255 255 255 / 64%);
}

.post-meta-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 0.85rem;
  padding: 0;
  margin: 1.2rem 0 1.25rem;
  color: var(--muted);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.71rem;
  letter-spacing: 0.025em;
  list-style: none;
}

.post-meta-list li:not(:last-child)::after {
  margin-left: 0.85rem;
  color: rgb(17 26 50 / 30%);
  content: "·";
}

.featured-title {
  max-width: 35rem;
  margin: 0 0 1rem;
  font-size: clamp(2rem, 5vw, 4.2rem);
  letter-spacing: -0.065em;
  line-height: 0.98;
}

.featured-excerpt {
  max-width: 33rem;
  margin: 0 0 1.8rem;
  color: var(--muted);
  font-size: 1.03rem;
}

.featured-button {
  margin-top: auto;
}

.featured-cover-link,
.post-cover-link {
  display: block;
  overflow: hidden;
  background: var(--paper-deep);
}

.featured-cover {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--motion-slow) cubic-bezier(0.2, 0.75, 0.3, 1);
}

.featured-index {
  display: grid;
  min-height: 100%;
  margin: 0;
  padding: 2.2rem;
  place-items: end start;
  color: rgb(17 26 50 / 86%);
  background:
    linear-gradient(145deg, rgb(223 251 117 / 74%), transparent 62%),
    linear-gradient(25deg, rgb(49 94 251 / 20%), transparent 55%),
    var(--paper-deep);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: clamp(1rem, 2.6vw, 1.7rem);
  font-weight: 800;
  letter-spacing: -0.04em;
}

.post-section {
  margin-top: clamp(4.7rem, 9vw, 7rem);
}

.section-heading-stack {
  align-items: end;
}

.filter-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-bottom: 1.45rem;
}

.filter-button {
  min-height: 2.25rem;
  padding: 0.4rem 0.72rem;
  border: 1px solid rgb(17 26 50 / 14%);
  border-radius: 999px;
  color: var(--muted);
  background: rgb(255 255 255 / 54%);
  font: inherit;
  font-size: 0.83rem;
  font-weight: 700;
  cursor: pointer;
  transition: border-color var(--motion-fast) ease, color var(--motion-fast) ease, background var(--motion-fast) ease, transform var(--motion-fast) ease;
}

.filter-button:hover,
.filter-button[aria-pressed="true"] {
  border-color: var(--local-accent, var(--accent));
  color: var(--local-accent, var(--accent-strong));
  background: var(--local-tint, #edf1ff);
}

.filter-button:hover {
  transform: translateY(-0.08rem);
}

.post-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.post-card {
  min-height: 19rem;
  flex-direction: column;
  border-radius: var(--radius-large);
  box-shadow: 0 14px 38px rgb(17 26 50 / 7%);
}

.post-card-content {
  min-height: 14.5rem;
  padding: 1.35rem;
}

.post-card .post-meta-list {
  margin: 0.95rem 0 1rem;
}

.post-card .post-title {
  margin-bottom: 0.65rem;
  font-size: clamp(1.25rem, 2.15vw, 1.55rem);
}

.post-card .post-excerpt {
  display: -webkit-box;
  margin-bottom: 1.1rem;
  overflow: hidden;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}

.post-card .tag-list {
  margin-top: auto;
}

.post-cover-link {
  min-height: 11rem;
  margin-top: auto;
}

.post-cover {
  width: 100%;
  min-width: 0;
  height: 100%;
  min-height: 11rem;
  object-fit: cover;
}

.archive-preview {
  padding: clamp(1.35rem, 4vw, 2.5rem);
  border: 1px solid rgb(17 26 50 / 11%);
  border-radius: var(--radius-large);
  background: rgb(255 255 255 / 47%);
}

.archive-rail {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
  gap: 0.7rem;
}

.archive-rail-card {
  min-height: 10.5rem;
  padding: 1.2rem;
  border: 1px solid rgb(17 26 50 / 10%);
  border-radius: var(--radius-medium);
  color: var(--ink);
  background: rgb(255 255 255 / 65%);
  text-decoration: none;
  transition: transform var(--motion-base) ease, border-color var(--motion-base) ease, box-shadow var(--motion-base) ease;
}

.archive-rail-card h3 {
  margin-bottom: 0.6rem;
  font-size: 1.2rem;
  letter-spacing: -0.035em;
}

.archive-rail-card p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.86rem;
}

.archive-rail-card .archive-rail-meta {
  margin-top: 1.4rem;
  color: var(--local-accent, var(--accent-strong));
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.72rem;
  font-weight: 720;
}

.site-footer {
  display: flex;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
}

.site-footer p {
  margin: 0;
}

.footer-links {
  display: flex;
  gap: 0.9rem;
}

.footer-links a {
  color: var(--muted);
  font-size: 0.83rem;
}

.page-intro {
  max-width: 46rem;
  margin-bottom: clamp(2.8rem, 7vw, 5.5rem);
}

.page-intro h1 {
  margin-bottom: 1rem;
  font-size: clamp(2.8rem, 7vw, 6rem);
  letter-spacing: -0.075em;
  line-height: 0.94;
}

.archive-controls {
  display: grid;
  gap: 1.1rem;
  padding: clamp(1.15rem, 3vw, 1.6rem);
  margin-bottom: clamp(2.2rem, 6vw, 4.2rem);
  border: 1px solid rgb(17 26 50 / 11%);
  border-radius: var(--radius-large);
  background: rgb(255 255 255 / 54%);
}

.archive-controls .filter-list {
  margin: 0;
}

.search-field {
  display: grid;
  gap: 0.45rem;
  max-width: 36rem;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
}

.search-field input {
  min-height: 2.8rem;
  padding: 0.55rem 0.8rem;
  border: 1px solid rgb(17 26 50 / 16%);
  border-radius: 0.7rem;
  color: var(--ink);
  background: var(--surface);
  font: inherit;
}

.search-field input:focus {
  border-color: var(--accent);
  outline: 3px solid rgb(49 94 251 / 16%);
}

.archive-list {
  display: grid;
  gap: clamp(2.6rem, 7vw, 4.5rem);
}

.archive-year {
  display: grid;
  grid-template-columns: minmax(5rem, 0.2fr) minmax(0, 1fr);
  gap: clamp(1.2rem, 4vw, 4rem);
}

.archive-year-title {
  position: sticky;
  top: 1.3rem;
  height: fit-content;
  margin: 0;
  color: var(--ink);
  font-size: clamp(2.1rem, 5vw, 3.7rem);
  letter-spacing: -0.07em;
  line-height: 0.9;
}

.archive-year-list {
  display: grid;
  gap: 0.7rem;
}

.archive-row {
  display: grid;
  grid-template-columns: minmax(7.6rem, 0.25fr) minmax(0, 1fr) auto;
  gap: 1rem;
  align-items: start;
  padding: 1.1rem 0;
  border-bottom: 1px solid rgb(17 26 50 / 12%);
  color: var(--ink);
  text-decoration: none;
  transition: color var(--motion-fast) ease, transform var(--motion-fast) ease;
}

.archive-row:first-child {
  border-top: 1px solid rgb(17 26 50 / 12%);
}

.archive-row-content h3 {
  margin: 0.25rem 0 0.45rem;
  font-size: clamp(1.1rem, 2.2vw, 1.45rem);
  letter-spacing: -0.035em;
}

.archive-row-content p {
  margin: 0;
  color: var(--muted);
  font-size: 0.89rem;
}

.archive-row-meta {
  color: var(--local-accent, var(--accent-strong)) !important;
  font-size: 0.74rem !important;
  font-weight: 720;
}

.archive-row-arrow {
  color: var(--local-accent, var(--accent));
  font-size: 1.1rem;
}

.about-intro {
  max-width: 50rem;
}

.about-copy {
  max-width: 40rem;
  margin: 0;
  color: var(--muted);
  font-size: clamp(1.12rem, 2.5vw, 1.45rem);
  line-height: 1.75;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
}

.about-card {
  min-height: 14rem;
  padding: 1.35rem;
  border: 1px solid rgb(17 26 50 / 11%);
  border-radius: var(--radius-large);
  background: rgb(255 255 255 / 60%);
}

.about-card h2 {
  margin: 1.2rem 0 0.65rem;
  font-size: 1.35rem;
  letter-spacing: -0.035em;
}

.about-card p:last-child {
  margin-bottom: 0;
  color: var(--muted);
}

.reading-progress {
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  z-index: 100;
  height: 3px;
  background: rgb(17 26 50 / 8%);
}

.reading-progress span {
  display: block;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--signal));
  transform: scaleX(0);
  transform-origin: left;
}

.article-layout {
  padding-block: clamp(2.6rem, 6vw, 4.5rem) 5rem;
}

.article-layout .back-link {
  margin-bottom: clamp(2rem, 5vw, 3.5rem);
}

.article-grid {
  display: grid;
  grid-template-columns: minmax(0, 46rem) minmax(10rem, 14rem);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
}

.article-content {
  min-width: 0;
}

.article-header {
  margin-bottom: 2.1rem;
}

.article-topline {
  margin-bottom: 1.1rem;
}

.article-header .archive-code {
  margin-bottom: 0.7rem;
  color: var(--accent-strong);
}

.article-meta {
  margin: 0 0 1.15rem;
  color: var(--muted);
  font-size: 0.88rem;
}

.article-title {
  max-width: 50rem;
  margin-bottom: 1.2rem;
}

.article-lead {
  margin-bottom: 1.35rem;
}

.article-actions {
  margin-top: 1.1rem;
}

.article-actions .text-button {
  min-height: 1.75rem;
  padding-block: 0.25rem;
}

.article-updated {
  margin: 0;
  color: var(--muted);
  font-size: 0.79rem;
}

.article-figure {
  margin: 1.9rem 0;
}

.article-image-button {
  display: block;
  width: 100%;
  padding: 0;
  overflow: hidden;
  border: 0;
  border-radius: 1rem;
  background: var(--paper-deep);
  cursor: zoom-in;
}

.article-image-button:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
}

.article-cover,
.article-inline-image {
  margin: 0;
  border-radius: 0;
  transition: transform var(--motion-slow) cubic-bezier(0.2, 0.75, 0.3, 1);
}

.article-cover {
  max-height: 34rem;
}

.article-caption {
  margin-top: 0.65rem;
  color: var(--muted);
  font-size: 0.8rem;
  text-align: left;
}

.article-body {
  color: var(--ink-soft);
  font-size: clamp(1.03rem, 1.8vw, 1.12rem);
}

.article-heading {
  scroll-margin-top: 2.5rem;
}

.article-toc-wrap {
  position: sticky;
  top: 2rem;
}

.article-toc {
  padding-left: 1rem;
  border-left: 1px solid rgb(17 26 50 / 14%);
}

.toc-title {
  margin-bottom: 0.7rem;
  color: var(--ink);
}

.toc-list {
  display: grid;
  gap: 0.45rem;
  padding: 0;
  margin: 0;
  list-style: none;
}

.toc-list a {
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.4;
  text-decoration: none;
}

.toc-list a:hover,
.toc-list a[aria-current="location"] {
  color: var(--accent-strong);
  font-weight: 700;
}

.toc-level-3 {
  padding-left: 0.65rem;
}

.toc-level-4 {
  padding-left: 1.25rem;
}

.post-navigation {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  margin-top: clamp(3rem, 7vw, 5.2rem);
}

.post-navigation-link {
  display: grid;
  gap: 0.4rem;
  min-height: 7rem;
  padding: 1rem;
  border: 1px solid rgb(17 26 50 / 11%);
  border-radius: var(--radius-medium);
  color: var(--ink);
  background: rgb(255 255 255 / 52%);
  text-decoration: none;
  transition: transform var(--motion-fast) ease, border-color var(--motion-fast) ease;
}

.post-navigation-link strong {
  font-size: 0.98rem;
  line-height: 1.35;
}

.comments {
  margin-top: clamp(3.8rem, 8vw, 5.8rem);
}

.comments-closed-title {
  margin: 0;
  font-size: 1.4rem;
  letter-spacing: -0.04em;
}

.image-lightbox {
  width: min(92vw, 72rem);
  max-width: none;
  max-height: 94vh;
  padding: 1.1rem;
  border: 0;
  border-radius: 1rem;
  color: white;
  background: rgb(8 13 28 / 96%);
  box-shadow: 0 30px 90px rgb(0 0 0 / 45%);
}

.image-lightbox::backdrop {
  background: rgb(6 10 21 / 70%);
  backdrop-filter: blur(4px);
}

.image-lightbox img {
  display: block;
  width: auto;
  max-width: 100%;
  max-height: calc(94vh - 5rem);
  margin: 0 auto;
  object-fit: contain;
}

.image-lightbox p {
  max-width: 80ch;
  margin: 0.7rem auto 0;
  color: rgb(255 255 255 / 72%);
  font-size: 0.85rem;
  text-align: center;
}

.lightbox-close {
  position: absolute;
  top: 0.55rem;
  right: 0.55rem;
  display: grid;
  width: 2.35rem;
  height: 2.35rem;
  place-items: center;
  border: 1px solid rgb(255 255 255 / 24%);
  border-radius: 50%;
  color: white;
  background: rgb(8 13 28 / 62%);
  font: inherit;
  font-size: 1.5rem;
  cursor: pointer;
}

.status-card {
  display: flex;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  padding: 1.2rem;
  border: 1px dashed #aab5ca;
  border-radius: var(--radius-medium);
  color: var(--muted);
}

.status-card p {
  margin: 0;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (hover: hover) and (pointer: fine) {
  .featured-card:hover .featured-cover,
  .post-card:hover .post-cover,
  .article-image-button:hover img {
    transform: scale(1.035);
  }

  .archive-rail-card:hover,
  .post-navigation-link:hover {
    border-color: var(--local-accent, rgb(49 94 251 / 42%));
    transform: translateY(-0.2rem);
  }

  .archive-row:hover {
    color: var(--local-accent, var(--accent-strong));
    transform: translateX(0.2rem);
  }
}

@media (prefers-reduced-motion: no-preference) {
  .signal-dot {
    animation: signal-pulse 2.9s ease-in-out infinite;
  }

  .featured-card {
    animation: featured-arrival 720ms cubic-bezier(0.2, 0.75, 0.3, 1) both;
  }
}

@keyframes signal-pulse {
  0%,
  100% {
    box-shadow: 0 0 0 0.28rem rgb(223 251 117 / 29%);
  }

  50% {
    box-shadow: 0 0 0 0.48rem rgb(223 251 117 / 9%);
  }
}

@keyframes featured-arrival {
  from {
    opacity: 0;
    transform: translateY(0.9rem);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: 0;
  }

  .signal-panel {
    max-width: 38rem;
  }

  .post-grid,
  .about-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .article-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .article-toc-wrap {
    position: static;
    order: -1;
  }

  .article-toc {
    padding: 0 0 1rem;
    border-bottom: 1px solid rgb(17 26 50 / 14%);
    border-left: 0;
  }
}

@media (max-width: 720px) {
  .site-header {
    gap: 0.75rem;
  }

  .site-nav {
    gap: 0.65rem;
    max-width: 67%;
    overflow-x: auto;
    scrollbar-width: none;
  }

  .site-nav::-webkit-scrollbar {
    display: none;
  }

  .site-nav a {
    font-size: 0.82rem;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
    max-width: 18rem;
  }

  .hero-actions .button-link,
  .hero-actions .text-button {
    width: 100%;
  }

  .featured-card,
  .post-grid,
  .about-grid {
    grid-template-columns: 1fr;
  }

  .featured-card {
    min-height: 0;
  }

  .featured-copy {
    min-height: 20rem;
  }

  .featured-cover-link,
  .featured-index {
    min-height: 17rem;
  }

  .post-card {
    min-height: 0;
  }

  .post-card-content {
    min-height: 0;
  }

  .post-cover-link {
    height: 13rem;
  }

  .archive-rail {
    grid-template-columns: 1fr;
  }

  .archive-year {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .archive-year-title {
    position: static;
  }

  .archive-row {
    grid-template-columns: 1fr auto;
  }

  .archive-row-index {
    grid-column: 1 / -1;
  }

  .post-navigation {
    grid-template-columns: 1fr;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .section-note {
    display: none;
  }

  .status-card {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  .button-link,
  .text-button,
  .filter-button,
  .featured-cover,
  .archive-rail-card,
  .archive-row,
  .post-navigation-link,
  .article-image-button img,
  .signal-dot {
    animation: none;
    transition: none;
  }

  .featured-card {
    animation: none;
  }
}