/*
 * Cyber Crayon v3 — Sections
 */

/* Page offset for fixed nav — body { padding-top: 4rem } (base.css) handles the nav offset */
.lc-front-page,
.lc-about-page {
  padding-top: 0;
  padding-bottom: var(--lc-section-gap);
}

.lc-articles-archive,
.lc-page-content {
  padding-bottom: var(--lc-section-gap);
}

.lc-page-header ~ .lc-articles-archive,
.lc-page-header ~ .lc-projects-archive {
  padding-top: 0;
}

/* Mobile nav — v4 (editorial: soft rounded panel, neutral links) */
.lc-mobile-nav {
  position: fixed;
  inset: 0;
  z-index: 150;
  pointer-events: none;
  visibility: hidden;
}

.lc-mobile-nav.is-open {
  pointer-events: auto;
  visibility: visible;
}

.lc-mobile-nav__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.lc-mobile-nav.is-open .lc-mobile-nav__overlay {
  opacity: 1;
}

.lc-mobile-nav__content {
  position: absolute;
  top: 0;
  right: 0;
  width: min(calc(100% - 3rem), 320px);
  height: 100%;
  background-color: var(--lc-surface);
  border-left: 1px solid var(--lc-border-divider);
  border-radius: var(--lc-radius-card) 0 0 var(--lc-radius-card);
  box-shadow: var(--lc-shadow-card);
  transform: translateX(100%);
  transition: transform 0.3s ease;
  padding: calc(var(--lc-navbar-h) + 1rem) var(--lc-gutter) 2rem;
  overflow-y: auto;
}

.lc-mobile-nav__header,
.lc-mobile-nav__menu {
  position: relative;
  z-index: 1;
}

.lc-mobile-nav__header {
  margin-bottom: 1.75rem;
}

.lc-mobile-nav__title {
  margin: 0;
  font-family: var(--lc-font-display);
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.lc-mobile-nav__header .lc-section__underline {
  height: 2px;
  width: 4rem;
  margin-top: 0.5rem;
  border-radius: 9999px;
}

.lc-mobile-nav.is-open .lc-mobile-nav__content {
  transform: translateX(0);
}

.lc-mobile-nav__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.lc-mobile-nav__list > li > a,
.lc-mobile-nav__list > li > .lc-mobile-menu__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 0.875rem 0;
  font-family: var(--lc-font-ui);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--lc-on-surface);
  text-decoration: none;
  border-bottom: 1px solid var(--lc-border-divider);
  transition: color 0.2s ease, background-color 0.2s ease;
}

.lc-mobile-nav__list > li > a:hover,
.lc-mobile-nav__list > li > a:focus-visible,
.lc-mobile-nav__list > li > .lc-mobile-menu__trigger:hover,
.lc-mobile-nav__list > li > .lc-mobile-menu__trigger:focus-visible {
  color: var(--lc-primary);
}

.lc-mobile-nav__list > li > .lc-mobile-menu__trigger {
  margin: 0;
  background: none;
  border-top: none;
  border-left: none;
  border-right: none;
  cursor: pointer;
  text-align: left;
  line-height: inherit;
}

.lc-mobile-nav__list > li > a.lc-nav__link--current,
.lc-mobile-nav__list > li > .lc-mobile-menu__trigger.lc-nav__link--current {
  color: var(--lc-primary);
}

.lc-mobile-menu__trigger .lc-nav__chevron {
  flex-shrink: 0;
  min-width: 0;
  min-height: 0;
  font-size: 1.125rem !important;
  line-height: 1;
  transition: transform 0.2s ease;
}

.lc-mobile-menu__trigger.is-expanded .lc-nav__chevron {
  transform: rotate(180deg);
}

.lc-mobile-nav__list > li.menu-item-has-children > .lc-mobile-menu__submenu.is-open {
  border-bottom: 1px solid var(--lc-border-divider);
  padding-bottom: 0.875rem;
  margin-bottom: 0.5rem;
}

.lc-mobile-menu__submenu {
  list-style: none;
  margin: 0;
  padding: 0;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.lc-mobile-menu__submenu.is-open {
  margin-top: 0.5rem;
  padding-left: 1rem;
  padding-bottom: 0.25rem;
}

.lc-mobile-menu__submenu a {
  display: block;
  padding: 0.75rem 0;
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--lc-text-secondary);
  transition: color 0.2s ease, background-color 0.2s ease;
}

.lc-mobile-menu__submenu a:hover,
.lc-mobile-menu__submenu a:focus-visible {
  color: var(--lc-on-surface);
}

.lc-mobile-menu__submenu a.lc-nav__link--current {
  color: var(--lc-primary);
}

@media (prefers-reduced-motion: reduce) {
  .lc-mobile-nav__overlay {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
}

/* Hero home — functional rules kept (v4 editorial) */
/* JS reveal deps — animations.js initHeroTextReveal */
.lc-hero__title-chars {
  display: inline;
}

html:not(.no-js) .lc-hero--home .lc-hero__title-chars .lc-hero__name-word {
  display: inline-block;
  opacity: 0;
  transform: translateY(0.35em) rotate(-2deg);
}

html:not(.no-js) .lc-hero--home .lc-hero__title-chars .lc-hero__name-word--space {
  opacity: 1;
  transform: none;
}

.lc-hero__name-word--space {
  width: 0.35em;
}

html:not(.no-js) .lc-hero--home .lc-hero__focus,
html:not(.no-js) .lc-hero--home .lc-hero__desc,
html:not(.no-js) .lc-hero--home .lc-hero__cta,
html:not(.no-js) .lc-hero--home .lc-hero__metrics {
  opacity: 0;
}

@media (prefers-reduced-motion: reduce) {
  .lc-hero--home .lc-hero__title-chars .lc-hero__name-word {
    opacity: 1 !important;
    transform: none !important;
  }

  html:not(.no-js) .lc-hero--home .lc-hero__focus,
  html:not(.no-js) .lc-hero--home .lc-hero__desc,
  html:not(.no-js) .lc-hero--home .lc-hero__cta,
  html:not(.no-js) .lc-hero--home .lc-hero__metrics {
    opacity: 1 !important;
  }
}

/* Avatar — parallax baseline; interactions.js initHeroParallax resets to rotate(3deg) */
.lc-hero__avatar-frame {
  transform: rotate(3deg);
}

.lc-hero__avatar-img {
  -webkit-user-drag: none;
}
/* Sections */
.lc-section__header {
  margin-bottom: 3rem;
}

.lc-section__header--compact {
  margin-bottom: 1.5rem;
}

.lc-section__header--nested {
  margin-bottom: 0;
  flex: 1;
  min-width: 0;
}

.lc-section__header--nested .lc-section__title {
  font-size: clamp(1.125rem, 2.5vw, var(--lc-text-headline-md));
}

.lc-section__slash--pink { color: var(--lc-neon-pink); }
.lc-section__slash--lime { color: var(--lc-cyber-lime-on-surface); }
.lc-section__slash--purple { color: var(--lc-primary); }

.lc-section__underline {
  transform-origin: left center;
}

@media (prefers-reduced-motion: no-preference) {
  .lc-section__underline:not(.is-drawn) {
    transform: scaleX(0);
    transition: transform 0.55s cubic-bezier(0.22, 1, 0.36, 1);
  }

  .lc-section__underline.is-drawn {
    transform: scaleX(1);
  }
}

html.no-js .lc-section__underline {
  transform: scaleX(1);
}

@media (prefers-reduced-motion: reduce) {
  .lc-section__underline {
    transform: scaleX(1);
  }
}

.lc-section__underline--lime { background: var(--lc-cyber-lime); }
.lc-section__underline--pink { background: var(--lc-neon-pink); }
.lc-section__underline--purple { background: var(--lc-primary); }

.lc-section__more {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--lc-on-surface-variant);
  text-decoration: none;
  transition: color var(--lc-transition), transform var(--lc-transition);
}

.lc-section__more:hover {
  color: var(--lc-primary);
}

.lc-section__more .lc-material-icon {
  transition: transform var(--lc-transition);
}

.lc-section__more:hover .lc-material-icon {
  transform: translateX(4px);
}

.lc-article-card {
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.lc-article-card.lc-card--tilt .lc-article-card__link {
  position: relative;
  z-index: 0;
}

.lc-article-card__link {
  display: flex;
  flex-direction: column;
  flex: 1;
  height: 100%;
  text-decoration: none;
  color: inherit;
}

/* v4 — 卡片视觉由 base.css .lc-card + content-card.php Tailwind 承担；
   原 v3 .lc-article-card__cover / __cover-title / __cover-img / __body / __title / __excerpt
   及 hover 规则已移除，仅保留结构性/JS 依赖。 */
.lc-article-card__cover {
  flex-shrink: 0;
}

.lc-article-card__body {
  min-height: 0;
}

.lc-article-card__date {
  display: block;
  margin-bottom: 0.5rem;
  flex-shrink: 0;
}

.lc-search-highlight {
  background: color-mix(in srgb, var(--lc-cyber-lime) 45%, transparent);
  color: inherit;
  padding: 0 0.1em;
  border-radius: 2px;
}

/* Bento projects */
.lc-bento-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 768px) {
  .lc-bento-grid {
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: repeat(2, minmax(180px, auto));
    min-height: 600px;
  }

  .lc-bento-card--featured {
    grid-column: span 2;
    grid-row: span 2;
  }

  .lc-bento-card--small:nth-child(2) {
    grid-column: span 2;
  }
}

.lc-bento-card {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 2rem;
  text-decoration: none;
  color: inherit;
  background: var(--lc-surface-container-low);
  overflow: hidden;
  min-height: 160px;
  transition: transform var(--lc-transition), background-color var(--lc-transition), color var(--lc-transition), box-shadow var(--lc-transition);
}

/* While JS drives 3D tilt on the inner face, disable CSS transform transitions. */
.lc-bento-card.lc-card--tilt.is-tilting,
.lc-article-card.lc-card--tilt.is-tilting {
  transition: background-color var(--lc-transition), color var(--lc-transition), box-shadow var(--lc-transition);
}

.lc-card--tilt.is-tilting > .lc-card-tilt-face {
  transition: none;
}

.lc-bento-card__status {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  left: auto;
  z-index: 2;
}

.lc-bento-card--featured .lc-bento-card__status {
  top: 1rem;
  right: 1rem;
}

/* Outer card = stable hit box; inner face receives 3D transform */
.lc-card--tilt {
  position: relative;
  isolation: isolate;
}

.lc-bento-card.lc-card--tilt {
  padding: 0;
}

.lc-card-tilt-face {
  box-sizing: border-box;
  transform-style: preserve-3d;
  transform-origin: center center;
}

.lc-bento-card.lc-card--tilt > .lc-card-tilt-face {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 2rem;
}

.lc-article-card.lc-card--tilt > .lc-card-tilt-face.lc-article-card__link {
  display: flex;
  flex-direction: column;
  flex: 1;
  height: 100%;
  min-height: 100%;
  text-decoration: none;
  color: inherit;
}

.lc-card--tilt::after,
.lc-bento-card.lc-bento-card--tilt::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 3;
  pointer-events: none;
  opacity: 0;
  background: radial-gradient(circle at var(--lc-glow-x, 50%) var(--lc-glow-y, 50%), rgba(204, 255, 0, 0.18), transparent 58%);
  transition: opacity 0.25s ease;
}

.lc-card--tilt:hover::after,
.lc-bento-card.lc-bento-card--tilt:hover::after {
  opacity: 1;
}

.lc-bento-card--featured.lc-card--tilt:hover::before,
.lc-bento-card--featured.lc-bento-card--tilt:hover::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  opacity: 0.06;
  background: repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(255, 255, 255, 0.08) 2px, rgba(255, 255, 255, 0.08) 4px);
}

.lc-bento-card--featured {
  background: var(--lc-ink-black);
  color: #fff;
  min-height: 300px;
}

.lc-bento-card--featured:hover {
  color: #fff;
}

.lc-bento-card--featured .lc-bento-card__bg-shot:not(.lc-bento-card__bg-shot--logo) {
  opacity: 0.36;
}

.lc-bento-card--featured .lc-bento-card__bg-shot--logo {
  opacity: 0.18;
}

.lc-bento-card__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.lc-bento-card__bg-shot {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.28;
  transform: scale(1);
  transform-origin: center center;
  transition:
    opacity 0.45s ease,
    transform 0.65s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.lc-bento-card__bg-shot:not(.lc-bento-card__bg-shot--logo) {
  transform: scale(1.08);
  opacity: 0.22;
}

.lc-bento-card__bg-shot--logo {
  object-fit: contain;
  opacity: 0.12;
  padding: 12%;
}

.lc-bento-card--has-shot:hover .lc-bento-card__bg-shot:not(.lc-bento-card__bg-shot--logo) {
  transform: scale(1.14);
}

.lc-bento-card--has-shot:hover .lc-bento-card__bg-shot--logo {
  transform: scale(1.06);
}

.lc-bento-card--featured:hover .lc-bento-card__bg-shot {
  opacity: 0.46;
  transform: scale(1.12);
}

.lc-bento-card--featured:hover .lc-bento-card__desc {
  color: rgba(255, 255, 255, 0.88);
}

.lc-bento-card--featured.lc-bento-card--has-shot .lc-bento-card__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(13, 13, 13, 0.78) 0%, rgba(13, 13, 13, 0.32) 45%, rgba(13, 13, 13, 0.08) 100%);
  pointer-events: none;
  transition: background 0.45s ease;
}

.lc-bento-card--featured.lc-bento-card--has-shot:hover .lc-bento-card__bg::after {
  background: linear-gradient(to top, rgba(13, 13, 13, 0.92) 0%, rgba(13, 13, 13, 0.45) 45%, rgba(13, 13, 13, 0.15) 100%);
}

.lc-bento-card--featured .lc-bento-card__bg:not(:has(.lc-bento-card__bg-shot)) {
  opacity: 0.3;
  background: repeating-linear-gradient(45deg, transparent, transparent 2px, rgba(255, 255, 255, 0.03) 2px, rgba(255, 255, 255, 0.03) 4px);
}

.lc-bento-card__content,
.lc-bento-card__row {
  position: relative;
  z-index: 1;
}

.lc-bento-card__content--stacked {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 100%;
  gap: 1rem;
}

.lc-bento-card__logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--lc-surface-container-lowest);
}

.lc-bento-card__logo--featured {
  width: 4.5rem;
  height: 4.5rem;
  margin-bottom: 1rem;
  transform: rotate(-3deg);
  transition: transform var(--lc-transition);
}

.lc-bento-card--featured:hover .lc-bento-card__logo--featured {
  transform: rotate(0deg);
}

.lc-bento-card__logo--compact {
  width: 3.5rem;
  height: 3.5rem;
  align-self: flex-start;
  transform: rotate(-6deg);
  transition: transform var(--lc-transition);
}

.lc-bento-card:hover .lc-bento-card__logo--compact {
  transform: rotate(0deg);
}

.lc-bento-card__row .lc-bento-card__logo {
  width: 6rem;
  height: 6rem;
  transform: rotate(12deg);
  transition: transform var(--lc-transition);
}

.lc-bento-card:hover .lc-bento-card__row .lc-bento-card__logo {
  transform: rotate(0deg);
}

.lc-bento-card__logo-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.lc-bento-card__logo-fallback {
  font-family: var(--lc-font-display);
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--lc-primary);
}

.lc-bento-card--featured .lc-bento-card__logo-fallback {
  color: var(--lc-cyber-lime);
}

.lc-bento-card__icon {
  font-size: 3rem !important;
  margin-bottom: 1rem;
  color: var(--lc-cyber-lime);
}

.lc-bento-card__icon--neon-pink { color: var(--lc-neon-pink); }
.lc-bento-card__icon--electric-purple { color: var(--lc-electric-purple); }
.lc-bento-card__icon--spray-can-blue { color: var(--lc-spray-can-blue); }

.lc-bento-card--featured .lc-bento-card__title {
  color: #fff;
  font-size: clamp(2rem, 4vw, 3rem);
}

.lc-bento-card__desc {
  margin: 0.5rem 0 0;
}

.lc-bento-card__row {
  display: flex;
  align-items: center;
  gap: 2rem;
  width: 100%;
  position: relative;
  z-index: 1;
}

.lc-bento-card--hover-neon-pink:hover .lc-bento-card__bg-shot,
.lc-bento-card--hover-spray-can-blue:hover .lc-bento-card__bg-shot,
.lc-bento-card--hover-electric-purple:hover .lc-bento-card__bg-shot {
  transform: scale(1.12);
}

@media (min-width: 768px) {
  .lc-bento-grid--mirror .lc-bento-card--featured {
    grid-column: 3 / span 2;
    grid-row: 1 / span 2;
  }

  .lc-bento-grid--mirror .lc-bento-card--small:nth-child(2) {
    grid-column: 1 / span 2;
    grid-row: 1;
  }

  .lc-bento-grid--mirror .lc-bento-card--small:nth-child(3) {
    grid-column: 1;
    grid-row: 2;
  }

  .lc-bento-grid--mirror .lc-bento-card--small:nth-child(4) {
    grid-column: 2;
    grid-row: 2;
  }

  .lc-bento-grid--count-1 {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
    min-height: 0;
  }

  .lc-bento-grid--count-1 .lc-bento-card--featured {
    grid-column: 1;
    grid-row: 1;
    min-height: 320px;
  }

  .lc-bento-grid--count-2 {
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: auto;
    min-height: 0;
  }

  .lc-bento-grid--count-2 .lc-bento-card--featured,
  .lc-bento-grid--count-2 .lc-bento-card--small {
    grid-column: span 1;
    grid-row: span 1;
    min-height: 260px;
  }

  .lc-bento-grid--count-3 {
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(2, minmax(180px, auto));
    min-height: 400px;
  }

  .lc-bento-grid--count-3 .lc-bento-card--featured {
    grid-column: 1;
    grid-row: 1 / span 2;
  }

  .lc-bento-grid--count-3 .lc-bento-card--small:nth-child(2) {
    grid-column: 2;
    grid-row: 1;
  }

  .lc-bento-grid--count-3 .lc-bento-card--small:nth-child(3) {
    grid-column: 2;
    grid-row: 2;
  }
}


/* Category filter chips — 功能态保留（v4 视觉在文末追加块覆盖） */
.lc-filter-chip.is-active {
  background: var(--lc-cyber-lime);
  color: var(--lc-chip-on-neon);
}

/* Single post — v4 布局由 single.php Tailwind 承担（文章正文排版见文末 v4 块） */

.lc-article__author-avatar {
  display: block;
  border-radius: 9999px;
  border: 1px solid color-mix(in srgb, var(--lc-outline-variant) 55%, transparent);
}

.lc-article__author .lc-avatar__fallback {
  border-radius: 9999px;
}

.lc-page-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.375rem;
  margin: 2rem 0;
  font-family: var(--lc-font-mono);
  font-size: 0.8125rem;
  color: var(--lc-text-secondary);
}

.lc-page-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2rem;
  padding: 0.25rem 0.625rem;
  border: 1px solid var(--lc-border-divider);
  border-radius: var(--lc-radius-pill);
  background: var(--lc-surface);
  color: var(--lc-on-surface);
  font-weight: 700;
  text-decoration: none;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.lc-page-links a:hover {
  border-color: var(--lc-primary);
  color: var(--lc-primary);
}

/* Empty state — v4 圆角卡片 */
.lc-empty-state {
  padding: 3rem 2rem;
  text-align: center;
  border-radius: var(--lc-radius-card);
  border: 1px solid var(--lc-border-divider);
  background: var(--lc-surface);
  box-shadow: var(--lc-shadow-card);
}

.lc-empty-state__visual {
  position: relative;
  margin-bottom: 1.5rem;
}

.lc-empty-state__code {
  font-family: var(--lc-font-display);
  font-size: clamp(4rem, 16vw, 7rem);
  font-weight: 800;
  line-height: 1;
  color: var(--lc-neon-pink);
}

.lc-empty-state__glitch {
  position: absolute;
  inset: 0;
  font-family: var(--lc-font-display);
  font-size: clamp(4rem, 16vw, 7rem);
  font-weight: 800;
  line-height: 1;
  color: var(--lc-cyber-lime);
  opacity: 0;
  transform: translate(0, 0);
  pointer-events: none;
  animation: lc-glitch-in 0.75s ease-out forwards;
}

@keyframes lc-glitch-in {
  0% {
    opacity: 0;
    transform: translate(0, 0);
  }

  18% {
    opacity: 0.55;
    transform: translate(-4px, 2px);
  }

  36% {
    opacity: 0.32;
    transform: translate(3px, -2px);
  }

  54% {
    opacity: 0.48;
    transform: translate(-2px, 3px);
  }

  72% {
    opacity: 0.3;
    transform: translate(2px, -1px);
  }

  100% {
    opacity: 0.28;
    transform: translate(4px, 4px);
  }
}

.lc-empty-state__status {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.75rem;
  padding: 0.375rem 0.75rem;
  border: 1px solid var(--lc-border-divider);
  background: var(--lc-ink-black);
  color: var(--lc-cyber-lime);
  font-family: var(--lc-font-mono);
  font-size: var(--lc-text-label-md);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.lc-empty-state__status-dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--lc-cyber-lime);
  animation: lc-empty-pulse 1.5s infinite;
}

.lc-empty-state__icon {
  display: flex;
  justify-content: center;
  margin-bottom: 1.25rem;
  color: var(--lc-on-surface-variant);
}

.lc-empty-state__title {
  margin: 0 0 0.75rem;
}

.lc-empty-state__description {
  margin: 0 0 2rem;
  color: var(--lc-on-surface-variant);
}

.lc-empty-state__section {
  margin-bottom: 2rem;
  text-align: left;
}

.lc-empty-state__section-title {
  margin: 0 0 0.75rem;
  color: var(--lc-on-surface-variant);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.lc-empty-state__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.625rem;
}

.lc-empty-state__posts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.lc-empty-state__post {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  padding: 0.75rem;
  border-radius: var(--lc-radius-card);
  border: 1px solid var(--lc-border-divider);
  background: var(--lc-surface);
  box-shadow: var(--lc-shadow-card);
  text-decoration: none;
  color: inherit;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.lc-empty-state__post:hover {
  transform: translateY(-2px);
  box-shadow: var(--lc-shadow-card-hover);
  border-color: color-mix(in srgb, var(--lc-on-surface) 20%, var(--lc-border-divider));
}

.lc-empty-state__post-thumb {
  flex-shrink: 0;
  width: 3.5rem;
  height: 3.5rem;
  overflow: hidden;
  border-radius: var(--lc-radius-element);
  border: 1px solid var(--lc-border-divider);
  background: var(--lc-surface-container);
}

.lc-empty-state__post-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.lc-empty-state__post-info {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  min-width: 0;
  text-align: left;
}

.lc-empty-state__post-title {
  font-weight: 700;
  line-height: 1.35;
}

.lc-empty-state__post-date {
  color: var(--lc-on-surface-variant);
}

.lc-empty-state__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

.lc-empty-state__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1.25rem;
  border-radius: 9999px;
  border: 1px solid var(--lc-border-divider);
  background: var(--lc-surface);
  color: var(--lc-on-surface);
  font-size: var(--lc-text-label-md);
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease, background-color 0.2s ease, color 0.2s ease;
}

.lc-empty-state__btn:hover {
  border-color: var(--lc-on-surface);
}

.lc-empty-state__btn--primary {
  background: var(--lc-primary);
  color: var(--lc-on-primary);
  border-color: var(--lc-primary);
}

.lc-empty-state__btn--primary:hover {
  background: var(--lc-primary-soft);
  border-color: var(--lc-primary-soft);
}

.lc-empty-state--compact {
  padding: 1.75rem 1.25rem;
  box-shadow: var(--lc-shadow-card);
}

.lc-empty-state--compact .lc-empty-state__visual {
  margin-bottom: 1rem;
}

.lc-empty-state--compact .lc-empty-state__code,
.lc-empty-state--compact .lc-empty-state__glitch {
  font-size: clamp(2.5rem, 12vw, 4rem);
}

.lc-empty-state--compact .lc-empty-state__description {
  margin-bottom: 0;
}

@media (prefers-reduced-motion: reduce) {
  .lc-empty-state__status-dot {
    animation: none;
  }

  .lc-empty-state__glitch {
    animation: none;
    opacity: 0.28;
    transform: translate(4px, 4px);
  }
}

@keyframes lc-empty-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

/* ── v4 导航功能性规则（自 layout.css 迁移，供 theme.js/interactions.js 状态切换）── */

/* 主题切换图标（sun/moon 显隐） */
.lc-hero__theme-icon--moon {
  display: none;
}

html[data-lc-color-scheme="dark"] .lc-hero__theme-icon--sun {
  display: none;
}

html[data-lc-color-scheme="dark"] .lc-hero__theme-icon--moon {
  display: inline-block;
}

/* 滚动玻璃态（has-glass 由 JS 切换） */
.lc-nav::before,
.lc-hero--navbar::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
}

.lc-nav.has-glass::before,
.lc-hero--navbar.has-glass::before {
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.lc-nav.has-glass,
.lc-hero--navbar.has-glass {
  background: var(--lc-nav-bg);
}

/* 品牌字符入场揭示 */
.lc-nav__brand-chars {
  display: inline-flex;
  flex-wrap: wrap;
}

html:not(.no-js) .lc-nav__brand-chars .lc-nav__brand-word {
  display: inline-block;
  opacity: 0;
  transform: translateY(0.35em) rotate(-2deg);
}

html:not(.no-js) .lc-nav__brand-chars .lc-nav__brand-word--space {
  opacity: 1;
  transform: none;
}

.lc-nav__brand-word--space {
  width: 0.35em;
}

html.no-js .lc-nav__brand-chars .lc-nav__brand-word,
.lc-nav__brand-chars .lc-nav__brand-word.is-revealed {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .lc-nav__brand-chars .lc-nav__brand-word {
    opacity: 1 !important;
    transform: none !important;
  }
}

/* 汉堡按钮 → X（is-active 由 JS 切换） */
.lc-nav__menu-btn.is-active .lc-hero__menu-bar:nth-child(1),
.lc-hero__menu-toggle.is-active .lc-hero__menu-bar:nth-child(1) {
  transform: translateY(0.375rem) rotate(45deg);
}

.lc-nav__menu-btn.is-active .lc-hero__menu-bar:nth-child(2),
.lc-hero__menu-toggle.is-active .lc-hero__menu-bar:nth-child(2) {
  opacity: 0;
}

.lc-nav__menu-btn.is-active .lc-hero__menu-bar:nth-child(3),
.lc-hero__menu-toggle.is-active .lc-hero__menu-bar:nth-child(3) {
  transform: translateY(-0.375rem) rotate(-45deg);
}

/* 内联搜索（is-open 由 JS 切换） */
.lc-search-inline.is-open {
  display: block;
  position: fixed;
  inset: 0;
  z-index: 200;
  width: 100%;
  min-height: 100vh;
  min-height: 100dvh;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: calc(var(--lc-navbar-h) + 1rem) var(--lc-gutter) 1rem;
  box-sizing: border-box;
}

.lc-search-inline__panel {
  opacity: 0;
  transform: translateY(-8px);
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.lc-search-inline__panel.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.lc-search-inline__results {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.lc-search-inline__result {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
  padding: 0.5rem 0.625rem;
  border: none;
  background: transparent;
  text-align: left;
  cursor: pointer;
  font-family: var(--lc-font-body);
  color: var(--lc-on-surface);
  border-left: 3px solid transparent;
  transition: background var(--lc-transition), border-color var(--lc-transition);
}

.lc-search-inline__result:hover,
.lc-search-inline__result.is-active {
  background: var(--lc-surface-container-low);
  border-left-color: var(--lc-cyber-lime);
}

.lc-search-inline__result-type {
  flex-shrink: 0;
  font-family: var(--lc-font-mono);
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--lc-on-surface-variant);
  min-width: 3.5rem;
}

.lc-search-inline__result-title {
  flex: 1;
  min-width: 0;
  font-size: 0.875rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.lc-search-inline__close {
  display: none;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 1.25rem;
  height: 1.25rem;
  border: none;
  background: transparent;
  padding: 0;
  margin: 0;
  cursor: pointer;
  color: var(--lc-on-surface-variant);
  line-height: 1;
  transition: color var(--lc-transition);
}

.lc-search-inline.has-value .lc-search-inline__close {
  display: inline-flex;
}

.lc-search-inline__close:hover {
  color: var(--lc-on-surface);
}

.lc-search-inline.has-value .lc-search-inline__kbd {
  display: none;
}

.lc-search-inline__input::-webkit-search-cancel-button,
.lc-search-inline__input::-webkit-search-decoration {
  -webkit-appearance: none;
  appearance: none;
  display: none;
}

@media (min-width: 640px) {
  .lc-search-inline.is-open {
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: absolute;
    top: 0;
    bottom: 0;
    right: 0;
    left: auto;
    inset-inline-start: auto;
    width: min(28rem, calc(100vw - 2 * var(--lc-gutter)));
    height: 100%;
    min-height: 0;
    transform: none;
    z-index: 210;
    background: none;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    padding: 0;
    overflow: visible;
  }

  .lc-search-inline.is-open .lc-search-inline__panel {
    position: absolute;
    top: calc(100% + 0.35rem);
    right: 0;
    left: auto;
    width: 100%;
    max-width: none;
    z-index: 210;
    margin: 0;
  }
}

@media (max-width: 639px) {
  .lc-search-inline.is-open .lc-search-inline__panel.is-visible {
    max-width: var(--lc-max);
    margin: 1rem auto 0;
  }

  .lc-hero__actions.is-search-open .lc-hero__search-toggle {
    display: none;
  }
}

/* v4 — Hero */
.lc-hero__particles { position: absolute; inset: 0; pointer-events: none; z-index: 0; }
.lc-hero__particle {
  position: absolute;
  left: 50%;
  top: 50%;
  width: var(--size);
  height: var(--size);
  border-radius: 9999px;
  background: color-mix(in srgb, var(--color) 55%, transparent);
  transform: translate(calc(-50% + var(--x)), calc(-50% + var(--y)));
  animation: lc-hero-particle-float 6s ease-in-out infinite alternate;
  animation-delay: var(--delay);
}
@keyframes lc-hero-particle-float {
  from { opacity: 0.25; }
  to { opacity: 0.7; }
}
@media (prefers-reduced-motion: reduce) {
  .lc-hero__particle { animation: none; opacity: 0.4; }
}

/* ── v4 归档/分页/筛选 ── */
.lc-pagination { display: flex; flex-wrap: wrap; gap: 0.5rem; justify-content: center; margin-top: 3rem; }
.lc-pagination .nav-links { display: flex; flex-wrap: wrap; gap: 0.5rem; justify-content: center; }
.lc-pagination .page-numbers { display: inline-flex; align-items: center; justify-content: center; min-width: 2.5rem; height: 2.5rem; padding: 0 0.75rem; border-radius: 9999px; border: 1px solid var(--lc-border-divider); color: var(--lc-text-secondary); font-size: 0.875rem; transition: all 0.2s ease; }
.lc-pagination .page-numbers.current { background: var(--lc-primary); color: var(--lc-on-primary); border-color: var(--lc-primary); }
.lc-pagination .page-numbers:not(.current):hover { color: var(--lc-on-surface); border-color: var(--lc-on-surface); }
.lc-pagination .page-numbers.dots { border: none; min-width: auto; height: auto; }

.lc-filter-chips { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 1.5rem 0; }
.lc-filter-chip { display: inline-flex; align-items: center; padding: 0.375rem 0.875rem; border-radius: 9999px; border: 1px solid var(--lc-border-divider); color: var(--lc-text-secondary); font-size: 0.8125rem; font-weight: 700; transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease; }
.lc-filter-chip:hover { color: var(--lc-on-surface); border-color: var(--lc-on-surface); }
.lc-filter-chip.is-active { background: var(--lc-primary); color: var(--lc-on-primary); border-color: var(--lc-primary); }

.lc-search-page-form { max-width: 560px; margin: 0 auto 2.5rem; }
.lc-search-page-form__box { display: flex; align-items: center; gap: 0.5rem; border: 1px solid var(--lc-border-divider); border-radius: 9999px; background: var(--lc-surface); padding: 0.25rem 0.375rem 0.25rem 1rem; transition: border-color 0.2s ease; }
.lc-search-page-form__box:focus-within { border-color: var(--lc-primary); }
.lc-search-page-form__icon { color: var(--lc-text-secondary); flex-shrink: 0; }
.lc-search-page-form__input { flex: 1; background: transparent; border: none; outline: none; color: var(--lc-on-surface); font-size: 0.9375rem; }
.lc-search-page-form__input::placeholder { color: var(--lc-text-secondary); }
.lc-search-page-form__btn { border-radius: 9999px; background: var(--lc-primary); color: var(--lc-on-primary); border: none; padding: 0.5rem 1.25rem; font-weight: 700; font-size: 0.875rem; cursor: pointer; transition: background-color 0.2s ease; }
.lc-search-page-form__btn:hover { background: var(--lc-primary-soft); }

.lc-page-header { padding-top: 1rem; }
.lc-page-header__badge { display: inline-flex; padding: 0.25rem 0.75rem; border-radius: 9999px; background: var(--lc-primary); color: var(--lc-on-primary); font-family: var(--lc-font-mono); font-size: 0.6875rem; letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 1rem; }
.lc-page-header__description { margin-top: 1rem; color: var(--lc-text-secondary); max-width: 56ch; }
.lc-page-header__count { font-family: var(--lc-font-mono); font-size: 0.8125rem; color: var(--lc-text-secondary); margin-top: 0.5rem; display: inline-block; }
.lc-page-header__meta { margin-top: 1rem; }

.lc-articles-archive { padding-top: 0.5rem; }
.lc-page-content { padding-bottom: var(--lc-section-gap); }

.lc-prose { font-size: 1.0625rem; line-height: 1.75; color: var(--lc-on-surface); }

/* ── v4 正文排版（页面/文章内容）── */
.lc-prose h2 { font-family: var(--lc-font-display); font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 800; letter-spacing: -0.02em; line-height: 1.25; margin: 2.5rem 0 1rem; }
.lc-prose h3 { font-family: var(--lc-font-display); font-size: 1.375rem; font-weight: 700; letter-spacing: -0.02em; line-height: 1.3; margin: 2rem 0 0.75rem; }
.lc-prose h4 { font-family: var(--lc-font-display); font-size: 1.125rem; font-weight: 700; line-height: 1.35; margin: 1.5rem 0 0.5rem; }
.lc-prose p { margin: 0 0 1.25rem; }
.lc-prose ul, .lc-prose ol { margin: 0 0 1.25rem; padding-left: 1.5rem; }
.lc-prose li { margin-bottom: 0.375rem; }
.lc-prose a { color: var(--lc-primary); text-decoration: underline; text-underline-offset: 3px; }
.lc-prose a:hover { color: var(--lc-primary-soft); }
.lc-prose code { font-family: var(--lc-font-mono); font-size: 0.875em; background: var(--lc-surface-container); padding: 0.125rem 0.375rem; border-radius: var(--lc-radius-element); }
.lc-prose pre { background: var(--lc-ink-black); color: var(--lc-on-surface); padding: 1rem 1.25rem; border-radius: var(--lc-radius-card); overflow-x: auto; margin: 0 0 1.25rem; }
.lc-prose pre code { background: transparent; padding: 0; color: inherit; }
.lc-prose blockquote { border-left: 3px solid var(--lc-primary); padding-left: 1rem; margin: 0 0 1.25rem; color: var(--lc-text-secondary); }
.lc-prose img { border-radius: var(--lc-radius-card); }
.lc-prose figure { margin: 0 0 1.25rem; }
.lc-prose table { width: 100%; border-collapse: collapse; margin: 0 0 1.25rem; font-size: 0.9375rem; }
.lc-prose th, .lc-prose td { border-bottom: 1px solid var(--lc-border-divider); padding: 0.5rem 0.75rem; text-align: left; }
.lc-prose th { font-weight: 700; }
.lc-prose hr { border: none; border-top: 1px solid var(--lc-border-divider); margin: 2rem 0; }

/* v4 — 文章正文排版 */
.lc-article__content { color: var(--lc-on-surface); font-size: 1.0625rem; }
.lc-article__content h1, .lc-article__content h2, .lc-article__content h3, .lc-article__content h4 {
  font-family: var(--lc-font-display);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-top: 2.5em;
  margin-bottom: 0.75em;
  line-height: 1.25;
}
.lc-article__content h2 { font-size: clamp(1.5rem, 2.5vw, 1.875rem); }
.lc-article__content h3 { font-size: 1.25rem; }
.lc-article__content p { margin: 0 0 1.5em; line-height: 1.75; }
.lc-article__content a { color: var(--lc-primary); text-decoration: underline; text-underline-offset: 3px; }
.lc-article__content code { font-family: var(--lc-font-mono); font-size: 0.875em; background: var(--lc-surface-container); border-radius: 4px; padding: 0.125em 0.375em; }
.lc-article__content pre { background: var(--lc-terminal-bg); color: var(--lc-terminal-text); border-radius: var(--lc-radius-card); padding: 1.25rem; overflow-x: auto; }
.lc-article__content blockquote { border-left: 3px solid var(--lc-cyber-lime); padding-left: 1.25rem; color: var(--lc-text-secondary); font-style: italic; }
.lc-article__content img { border-radius: var(--lc-radius-card); }
.lc-article__content ul, .lc-article__content ol { margin: 0 0 1.5em 1.25rem; line-height: 1.75; }
.lc-article__content li { margin: 0.375em 0; }
.lc-article__content table { width: 100%; border-collapse: collapse; margin: 0 0 1.5em; }
.lc-article__content th, .lc-article__content td { border: 1px solid var(--lc-border-divider); padding: 0.5rem 0.75rem; text-align: left; }

/* v4 — TOC 与浮动操作 */
.lc-article__toc-sidebar .lc-toc {
  position: sticky;
  top: 5rem;
  border: 1px solid var(--lc-border-divider);
  border-radius: var(--lc-radius-card);
  background: var(--lc-surface);
  box-shadow: var(--lc-shadow-card);
  padding: 1.25rem;
}
.lc-toc__header { display: flex; align-items: center; gap: 0.5rem; margin-bottom: 0.75rem; }
.lc-toc__title { font-family: var(--lc-font-display); font-weight: 800; font-size: 0.9375rem; letter-spacing: -0.01em; }
.lc-toc__icon { color: var(--lc-primary); }
.lc-toc__list { list-style: none; margin: 0; padding: 0; }
.lc-toc__item { margin: 0.25rem 0; }
.lc-toc__link { display: block; padding: 0.25rem 0.5rem; border-radius: var(--lc-radius-element); color: var(--lc-text-secondary); font-size: 0.8125rem; transition: color 0.2s ease, background-color 0.2s ease; }
.lc-toc__link:hover { color: var(--lc-on-surface); background: var(--lc-surface-container); }
.lc-toc__link.is-active,
.lc-toc__link--active { color: var(--lc-primary); font-weight: 700; background: transparent; border-left-color: transparent; box-shadow: none; }
.lc-toc__item--level-2 .lc-toc__link { padding-left: 1rem; }
.lc-toc__item--level-3 .lc-toc__link { padding-left: 1.75rem; }
.lc-floating-actions { position: fixed; right: 1.25rem; bottom: 1.25rem; display: flex; flex-direction: column; gap: 0.5rem; z-index: 40; }
.lc-back-to-top { display: inline-flex; align-items: center; justify-content: center; width: 2.75rem; height: 2.75rem; border-radius: 9999px; border: 1px solid var(--lc-border-divider); background: var(--lc-surface); color: var(--lc-on-surface); box-shadow: var(--lc-shadow-card); cursor: pointer; transition: border-color 0.2s ease, color 0.2s ease; }
.lc-back-to-top:hover { border-color: var(--lc-primary); color: var(--lc-primary); }
.lc-back-to-top__progress { stroke: var(--lc-primary); }
.lc-back-to-top__pct { font-family: var(--lc-font-mono); font-size: 0.625rem; }