/* ============================
   各页面专属样式
   ============================ */

/* =====================================================
   首页 index.html
   ===================================================== */

/* ---------- Hero ---------- */
.hero {
  min-height: 100vh;
  position: relative;
  display: flex;
  align-items: center;
  padding-top: var(--nav-h);
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.hero__bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 50% 50% at 25% 30%, rgba(0, 229, 255, 0.18), transparent 60%),
    radial-gradient(ellipse 40% 50% at 80% 70%, rgba(124, 92, 255, 0.18), transparent 60%);
}

.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 229, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 229, 255, 0.08) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, #000 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, #000 30%, transparent 80%);
}

.hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 64px;
  align-items: center;
  padding-block: 80px;
}

.hero__kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  color: var(--neon-cyan);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 24px;
  padding: 6px 14px;
  background: rgba(0, 229, 255, 0.08);
  border: 1px solid rgba(0, 229, 255, 0.3);
  border-radius: 999px;
}

.hero__kicker .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--neon-cyan);
  box-shadow: 0 0 12px var(--neon-cyan);
  animation: glow-pulse 2s ease-in-out infinite;
}

.hero__title {
  font-size: clamp(2.4rem, 5.4vw, 4.6rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.01em;
  margin-bottom: 24px;
}

.hero__title-line {
  display: block;
  opacity: 0;
  transform: translateY(40px);
  animation: hero-rise 1s var(--ease-out) forwards;
}

.hero__title-line:nth-child(1) { animation-delay: 0.1s; }
.hero__title-line:nth-child(2) { animation-delay: 0.25s; }
.hero__title-line:nth-child(3) { animation-delay: 0.4s; }

@keyframes hero-rise {
  to { opacity: 1; transform: none; }
}

.hero__title em {
  font-style: normal;
  background: linear-gradient(120deg, var(--neon-cyan) 0%, var(--neon-purple) 60%, var(--neon-pink) 100%);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: gradient-shift 8s ease infinite;
}

.hero__desc {
  font-size: 1.05rem;
  color: var(--text-dim);
  max-width: 540px;
  line-height: 1.8;
  margin-bottom: 36px;
  opacity: 0;
  animation: hero-rise 1s var(--ease-out) 0.6s forwards;
}

.hero__cta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  opacity: 0;
  animation: hero-rise 1s var(--ease-out) 0.8s forwards;
}

.hero__meta {
  display: flex;
  gap: 32px;
  margin-top: 48px;
  flex-wrap: wrap;
  opacity: 0;
  animation: hero-rise 1s var(--ease-out) 1s forwards;
}

.hero__meta-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.hero__meta-num {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--neon-cyan);
  line-height: 1;
}

.hero__meta-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-dim);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

/* Hero 终端窗口 */
.terminal {
  position: relative;
  background: rgba(6, 8, 15, 0.85);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(0, 229, 255, 0.12);
  overflow: hidden;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transform: perspective(1200px) rotateY(-6deg) rotateX(2deg);
  transition: transform 0.6s var(--ease-out);
  opacity: 0;
  animation: hero-rise 1s var(--ease-out) 0.5s forwards;
}

.terminal:hover {
  transform: perspective(1200px) rotateY(-2deg) rotateX(0deg);
}

.terminal::before {
  content: "";
  position: absolute;
  inset: -1px;
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.5), transparent 40%, rgba(124, 92, 255, 0.5));
  border-radius: var(--radius-lg);
  z-index: -1;
  opacity: 0.6;
}

.terminal__bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.3);
}

.terminal__dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.terminal__dot--r { background: #FF5F57; }
.terminal__dot--y { background: #FEBC2E; }
.terminal__dot--g { background: #28C840; }

.terminal__title {
  flex: 1;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-dim);
  letter-spacing: 0.1em;
}

.terminal__body {
  padding: 24px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.9;
  min-height: 320px;
  color: #C5D5E8;
  position: relative;
}

.terminal__line {
  display: block;
  white-space: pre-wrap;
  word-break: break-word;
}

.terminal__prompt {
  color: var(--neon-green);
}

.terminal__path {
  color: var(--neon-cyan);
}

.terminal__cmd {
  color: #fff;
}

.terminal__out {
  color: var(--text-dim);
  margin-bottom: 4px;
}

.terminal__out .acc { color: var(--neon-cyan); }
.terminal__out .acc2 { color: var(--neon-purple); }
.terminal__out .acc3 { color: var(--neon-green); }
.terminal__out .acc4 { color: var(--neon-yellow); }

.terminal__caret {
  display: inline-block;
  width: 8px;
  height: 1.1em;
  background: var(--neon-cyan);
  vertical-align: text-bottom;
  margin-left: 4px;
  animation: blink 1s steps(1) infinite;
  box-shadow: 0 0 8px var(--neon-cyan);
}

.terminal__corner {
  position: absolute;
  width: 14px;
  height: 14px;
  border-color: var(--neon-cyan);
}

.terminal__corner--tl { top: 8px; left: 8px; border-top: 1.5px solid; border-left: 1.5px solid; }
.terminal__corner--tr { top: 8px; right: 8px; border-top: 1.5px solid; border-right: 1.5px solid; }
.terminal__corner--bl { bottom: 8px; left: 8px; border-bottom: 1.5px solid; border-left: 1.5px solid; }
.terminal__corner--br { bottom: 8px; right: 8px; border-bottom: 1.5px solid; border-right: 1.5px solid; }

@media (max-width: 960px) {
  .hero__inner {
    grid-template-columns: 1fr;
    gap: 40px;
    padding-block: 60px;
  }
  .terminal {
    transform: none;
    max-width: 540px;
  }
}

/* ---------- 分类入口 ---------- */
.cats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.cat-card {
  position: relative;
  padding: 28px 24px;
  background: linear-gradient(180deg, rgba(14, 17, 24, 0.85), rgba(14, 17, 24, 0.5));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  text-decoration: none;
  color: var(--text);
  transition: all var(--t-base) var(--ease-out);
}

.cat-card::after {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: var(--radius-lg);
  padding: 1px;
  background: linear-gradient(135deg, var(--cat-color, var(--neon-cyan)), transparent 60%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity var(--t-base) var(--ease-out);
  pointer-events: none;
}

.cat-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.cat-card:hover::after {
  opacity: 1;
}

.cat-card__icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  color: var(--cat-color, var(--neon-cyan));
  margin-bottom: 18px;
  position: relative;
}

.cat-card__icon svg {
  width: 24px;
  height: 24px;
  stroke: currentColor;
  stroke-width: 1.8;
  fill: none;
}

.cat-card__num {
  position: absolute;
  top: 16px;
  right: 18px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-faint);
  letter-spacing: 0.1em;
}

.cat-card__title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: 0.02em;
}

.cat-card__desc {
  color: var(--text-dim);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 16px;
  min-height: 44px;
}

.cat-card__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-dim);
}

.cat-card__arrow {
  color: var(--cat-color, var(--neon-cyan));
  transition: transform var(--t-base) var(--ease-out);
}

.cat-card:hover .cat-card__arrow {
  transform: translateX(4px);
}

@media (max-width: 1024px) {
  .cats { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 560px) {
  .cats { grid-template-columns: 1fr; }
}

/* ---------- 笔记列表卡片 ---------- */
.posts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.post-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 24px;
  background: linear-gradient(180deg, rgba(14, 17, 24, 0.85), rgba(14, 17, 24, 0.5));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: var(--text);
  transition: all var(--t-base) var(--ease-out);
  overflow: hidden;
}

.post-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--post-color, var(--neon-cyan));
  opacity: 0.7;
  transition: width var(--t-base) var(--ease-out);
}

.post-card:hover {
  transform: translateY(-4px);
  border-color: var(--post-color, var(--neon-cyan));
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4);
}

.post-card:hover::before {
  width: 5px;
  opacity: 1;
}

.post-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
  flex-wrap: wrap;
  gap: 8px;
}

.post-card__cat {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--post-color, var(--neon-cyan));
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.post-card__date {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-faint);
}

.post-card__title {
  font-family: var(--font-display);
  font-size: 1.18rem;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 12px;
  transition: color var(--t-fast) var(--ease-out);
  letter-spacing: 0.01em;
}

.post-card:hover .post-card__title {
  color: var(--post-color, var(--neon-cyan));
}

.post-card__excerpt {
  color: var(--text-dim);
  font-size: 0.92rem;
  line-height: 1.7;
  margin-bottom: 20px;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-card__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-dim);
}

.post-card__tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.post-card__read {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

@media (max-width: 1024px) {
  .posts-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .posts-grid { grid-template-columns: 1fr; }
}

/* ---------- 订阅 / 联系 ---------- */
.contact-cta {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 32px;
  align-items: center;
  padding: 40px;
  background:
    radial-gradient(ellipse at top right, rgba(124, 92, 255, 0.15), transparent 60%),
    linear-gradient(180deg, rgba(14, 17, 24, 0.9), rgba(14, 17, 24, 0.6));
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  position: relative;
  overflow: hidden;
}

.contact-cta::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 24px;
  right: 24px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--neon-cyan), var(--neon-purple), transparent);
  opacity: 0.5;
}

.contact-cta h3 {
  font-size: 1.6rem;
  margin-bottom: 12px;
}

.contact-cta p {
  color: var(--text-dim);
  margin: 0;
}

.contact-cta__form {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}

.contact-cta__form input {
  flex: 1;
  padding: 12px 16px;
  background: rgba(6, 8, 15, 0.8);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text);
  font-size: 0.95rem;
  outline: none;
  transition: all var(--t-fast) var(--ease-out);
}

.contact-cta__form input:focus {
  border-color: var(--neon-cyan);
  box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.15);
}

@media (max-width: 768px) {
  .contact-cta { grid-template-columns: 1fr; padding: 28px; }
}

/* =====================================================
   列表页 list.html
   ===================================================== */

.list-hero {
  padding-top: calc(var(--nav-h) + 64px);
  padding-bottom: 48px;
  position: relative;
}

.list-hero__title {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 12px;
  letter-spacing: 0.02em;
}

.list-hero__desc {
  color: var(--text-dim);
  max-width: 640px;
  font-size: 1.05rem;
  line-height: 1.8;
}

.list-hero__breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-dim);
  margin-bottom: 16px;
  letter-spacing: 0.08em;
}

.list-hero__breadcrumb a {
  color: var(--text-dim);
}

.list-hero__breadcrumb a:hover { color: var(--neon-cyan); }

.list-hero__breadcrumb span { color: var(--neon-cyan); }

.list-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 40px;
  align-items: flex-start;
  padding-bottom: 80px;
}

@media (max-width: 960px) {
  .list-layout { grid-template-columns: 1fr; }
}

.list-side {
  position: sticky;
  top: calc(var(--nav-h) + 24px);
  padding: 24px;
  background: rgba(14, 17, 24, 0.6);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

@media (max-width: 960px) {
  .list-side { position: static; }
}

.list-side__title {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  color: var(--neon-cyan);
  text-transform: uppercase;
  margin-bottom: 16px;
}

.list-side__nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.list-side__nav a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  font-size: 0.95rem;
  color: var(--text-dim);
  text-decoration: none;
  border-left: 2px solid transparent;
  border-radius: 0 6px 6px 0;
  transition: all var(--t-fast) var(--ease-out);
}

.list-side__nav a:hover {
  color: var(--neon-cyan);
  background: rgba(0, 229, 255, 0.05);
}

.list-side__nav a.is-active {
  color: var(--neon-cyan);
  background: rgba(0, 229, 255, 0.08);
  border-left-color: var(--neon-cyan);
}

.list-side__count {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--text-faint);
}

.list-side__tags {
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px dashed var(--border);
}

.list-side__tagcloud {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.posts-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.post-row {
  position: relative;
  display: grid;
  grid-template-columns: 100px 1fr auto;
  gap: 24px;
  align-items: center;
  padding: 22px 24px;
  background: rgba(14, 17, 24, 0.5);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--text);
  transition: all var(--t-base) var(--ease-out);
}

.post-row::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  bottom: 16px;
  width: 3px;
  background: var(--post-color, var(--neon-cyan));
  border-radius: 0 4px 4px 0;
  opacity: 0.7;
}

.post-row:hover {
  border-color: var(--post-color, var(--neon-cyan));
  background: rgba(14, 17, 24, 0.85);
  transform: translateX(4px);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.35);
}

.post-row__date {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-dim);
  display: flex;
  flex-direction: column;
  gap: 2px;
  text-align: center;
  letter-spacing: 0.06em;
}

.post-row__date strong {
  font-size: 1.4rem;
  color: var(--post-color, var(--neon-cyan));
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0;
}

.post-row__body {
  min-width: 0;
}

.post-row__head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
  flex-wrap: wrap;
}

.post-row__title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0;
  letter-spacing: 0.01em;
}

.post-row:hover .post-row__title {
  color: var(--post-color, var(--neon-cyan));
}

.post-row__excerpt {
  color: var(--text-dim);
  font-size: 0.9rem;
  line-height: 1.6;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-row__arrow {
  color: var(--text-faint);
  transition: all var(--t-base) var(--ease-out);
}

.post-row:hover .post-row__arrow {
  color: var(--post-color, var(--neon-cyan));
  transform: translateX(6px);
}

@media (max-width: 720px) {
  .post-row {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .post-row__date {
    flex-direction: row;
    gap: 12px;
  }
  .post-row__date strong { font-size: 1rem; }
  .post-row__arrow { display: none; }
}

/* =====================================================
   详情页 article.html
   ===================================================== */

.article-hero {
  padding-top: calc(var(--nav-h) + 56px);
  padding-bottom: 32px;
}

.article-hero__breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-dim);
  margin-bottom: 24px;
  letter-spacing: 0.08em;
}

.article-hero__breadcrumb a { color: var(--text-dim); }
.article-hero__breadcrumb a:hover { color: var(--neon-cyan); }
.article-hero__breadcrumb .sep { color: var(--text-faint); }
.article-hero__breadcrumb .cur { color: var(--neon-cyan); }

.article-hero__cat {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--article-color, var(--neon-cyan));
  margin-bottom: 16px;
  padding: 4px 12px;
  background: rgba(0, 229, 255, 0.06);
  border: 1px solid rgba(0, 229, 255, 0.25);
  border-radius: 999px;
}

.article-hero__title {
  font-size: clamp(2rem, 4.4vw, 3.2rem);
  line-height: 1.2;
  margin-bottom: 20px;
  letter-spacing: -0.005em;
}

.article-hero__meta {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-dim);
  letter-spacing: 0.04em;
  margin-bottom: 16px;
}

.article-hero__meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.article-hero__meta svg {
  width: 14px;
  height: 14px;
  stroke: currentColor;
  stroke-width: 1.8;
  fill: none;
}

.article-layout {
  display: grid;
  grid-template-columns: 1fr 220px;
  gap: 56px;
  align-items: flex-start;
  padding-bottom: 80px;
}

@media (max-width: 1024px) {
  .article-layout { grid-template-columns: 1fr; gap: 40px; }
  .article-toc { position: static !important; }
}

.article-content {
  max-width: 760px;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--text);
}

.article-content h2 {
  font-size: 1.7rem;
  margin: 48px 0 18px;
  padding-top: 16px;
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 10px;
  scroll-margin-top: calc(var(--nav-h) + 24px);
}

.article-content h2::before {
  content: "##";
  color: var(--neon-cyan);
  font-family: var(--font-mono);
  font-size: 0.7em;
  font-weight: 500;
  letter-spacing: 0.1em;
}

.article-content h3 {
  font-size: 1.3rem;
  margin: 32px 0 14px;
  display: flex;
  align-items: baseline;
  gap: 8px;
  scroll-margin-top: calc(var(--nav-h) + 24px);
}

.article-content h3::before {
  content: "###";
  color: var(--neon-purple);
  font-family: var(--font-mono);
  font-size: 0.65em;
  font-weight: 500;
  letter-spacing: 0.1em;
}

.article-content p {
  margin: 0 0 1.2em;
  color: #D5E1F0;
}

.article-content ul,
.article-content ol {
  margin: 0 0 1.2em;
  padding-left: 1.5em;
  list-style: none;
}

.article-content ul li {
  position: relative;
  padding-left: 24px;
  margin-bottom: 8px;
  color: #D5E1F0;
}

.article-content ul li::before {
  content: "▸";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--neon-cyan);
  font-size: 0.9em;
}

.article-content ol {
  counter-reset: olc;
}

.article-content ol li {
  position: relative;
  padding-left: 32px;
  margin-bottom: 8px;
  counter-increment: olc;
  color: #D5E1F0;
}

.article-content ol li::before {
  content: counter(olc, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--font-mono);
  color: var(--neon-purple);
  font-size: 0.85em;
  font-weight: 500;
  letter-spacing: 0.05em;
}

.article-content blockquote {
  margin: 24px 0;
  padding: 16px 20px 16px 24px;
  border-left: 3px solid var(--neon-purple);
  background: rgba(124, 92, 255, 0.06);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: #D5E1F0;
  font-style: italic;
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 0.92rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.article-content th,
.article-content td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.article-content th {
  background: rgba(0, 229, 255, 0.06);
  font-family: var(--font-display);
  color: var(--neon-cyan);
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 600;
}

.article-content tr:last-child td { border-bottom: 0; }

.article-content tr:hover td { background: rgba(0, 229, 255, 0.03); }

.article-content hr {
  border: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-strong), transparent);
  margin: 32px 0;
}

.article-toc {
  position: sticky;
  top: calc(var(--nav-h) + 24px);
  padding: 20px;
  background: rgba(14, 17, 24, 0.6);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: 0.82rem;
}

.article-toc__title {
  color: var(--neon-cyan);
  font-size: 0.74rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.article-toc__title::before {
  content: "§";
  color: var(--neon-cyan);
}

.article-toc ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.article-toc a {
  display: block;
  padding: 6px 10px;
  color: var(--text-dim);
  text-decoration: none;
  border-left: 2px solid transparent;
  border-radius: 0 4px 4px 0;
  transition: all var(--t-fast) var(--ease-out);
  line-height: 1.4;
}

.article-toc a:hover {
  color: var(--neon-cyan);
  background: rgba(0, 229, 255, 0.06);
}

.article-toc a.is-active {
  color: var(--neon-cyan);
  border-left-color: var(--neon-cyan);
  background: rgba(0, 229, 255, 0.08);
}

.article-toc .lvl-3 {
  padding-left: 20px;
  font-size: 0.78rem;
}

.article-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 56px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.article-nav__item {
  padding: 20px 24px;
  background: rgba(14, 17, 24, 0.5);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--text);
  transition: all var(--t-base) var(--ease-out);
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.article-nav__item:hover {
  border-color: var(--neon-cyan);
  transform: translateY(-2px);
}

.article-nav__item--next { text-align: right; align-items: flex-end; }

.article-nav__label {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--text-dim);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.article-nav__title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

@media (max-width: 640px) {
  .article-nav { grid-template-columns: 1fr; }
  .article-nav__item--next { text-align: left; align-items: flex-start; }
}

/* =====================================================
   关于页 about.html
   ===================================================== */

.about-hero {
  padding-top: calc(var(--nav-h) + 64px);
  padding-bottom: 48px;
}

.about-hero__inner {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 40px;
  align-items: center;
}

@media (max-width: 720px) {
  .about-hero__inner { grid-template-columns: 1fr; text-align: center; justify-items: center; }
}

.about-hero__name {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 8px;
}

.about-hero__role {
  font-family: var(--font-mono);
  color: var(--neon-cyan);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-size: 0.86rem;
  margin-bottom: 20px;
}

.about-hero__desc {
  color: var(--text-dim);
  font-size: 1.05rem;
  line-height: 1.85;
  max-width: 640px;
}

.about-hero__contact {
  display: flex;
  gap: 12px;
  margin-top: 24px;
  flex-wrap: wrap;
}

.about-section {
  padding-block: 32px;
}

.about-section h3 {
  font-size: 1.4rem;
  margin-bottom: 20px;
}

.timeline {
  position: relative;
  padding-left: 28px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--neon-cyan), var(--neon-purple), transparent);
}

.timeline__item {
  position: relative;
  padding-bottom: 24px;
}

.timeline__item::before {
  content: "";
  position: absolute;
  left: -28px;
  top: 8px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--neon-cyan);
  box-shadow: 0 0 8px var(--neon-cyan);
}

.timeline__date {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--neon-cyan);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.timeline__title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.timeline__desc {
  color: var(--text-dim);
  font-size: 0.92rem;
  line-height: 1.6;
}

.skill-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.skill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  color: var(--text);
  background: rgba(14, 17, 24, 0.6);
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: all var(--t-fast) var(--ease-out);
  cursor: default;
}

.skill:hover {
  transform: translateY(-2px);
  border-color: var(--skill-color, var(--neon-cyan));
  color: var(--skill-color, var(--neon-cyan));
  box-shadow: 0 0 0 1px var(--skill-color, var(--neon-cyan)), 0 8px 16px rgba(0, 0, 0, 0.35);
}

.skill__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--skill-color, var(--neon-cyan));
  box-shadow: 0 0 6px var(--skill-color, var(--neon-cyan));
}

.socials {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.social {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  color: var(--text);
  background: rgba(14, 17, 24, 0.6);
  border: 1px solid var(--border);
  border-radius: 8px;
  text-decoration: none;
  transition: all var(--t-fast) var(--ease-out);
}

.social:hover {
  border-color: var(--neon-cyan);
  color: var(--neon-cyan);
  transform: translateY(-2px);
}

.social svg {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  stroke-width: 1.8;
  fill: none;
}