@import url('https://fonts.googleapis.com/css2?family=Fira+Code:wght@300;400;500;600;700&family=Share+Tech+Mono&display=swap');

/* ============================================================
   CSS 变量 & Reset
   ============================================================ */
:root {
  --blue: #3bb1ff;
  --red: #ff5252;
  --black: #000000;
  --white: #ffffff;
  --yellow: #f5e642;
  --bg: #0d0d0d;
  --surface: #141414;
  --surface2: #1e1e1e;
  --border: 3px solid var(--black);
  --shadow: 5px 5px 0px var(--black);
  --shadow-blue: 5px 5px 0px var(--blue);
  --shadow-red: 5px 5px 0px var(--red);
  --radius: 0px;
  --font-mono: 'Share Tech Mono', 'Fira Code', 'Courier New', monospace;
  --nav-h: 110px;
  --topbar-h: 36px;
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  :root { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  line-height: 1.6;
  background: var(--bg);
  color: var(--white);
  font-family: var(--font-mono);
}

body, .nb-body {
  min-height: 100vh;
  overflow-x: hidden;
  background: var(--bg);
}

img { max-width: 100%; display: block; }
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
ul, ol { list-style: none; }

/* ============================================================
   顶部公告条
   ============================================================ */
.top-bar {
  background: var(--red);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-align: center;
  padding: 6px 12px;
  border-bottom: 3px solid var(--black);
  position: sticky;
  top: 0;
  z-index: 200;
  white-space: nowrap;
  overflow: hidden;
}

.top-bar-text {
  display: inline-block;
  animation: marquee 20s linear infinite;
}

@keyframes marquee {
  0%   { transform: translateX(60vw); }
  100% { transform: translateX(-100%); }
}

@media (prefers-reduced-motion: reduce) {
  .top-bar-text { animation: none; }
}

/* ============================================================
   Header：两行，品牌行 + 菜单行
   ============================================================ */
.site-header {
  background: var(--black);
  border-bottom: 3px solid var(--blue);
  position: sticky;
  top: var(--topbar-h);
  z-index: 100;
  box-shadow: 0 4px 0 var(--blue);
}

.brand-row {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 24px 10px;
  border-bottom: 2px solid var(--surface2);
}

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

/* logo img via ctx.img() — no hardcoded width/height here */
.logo-img {
  height: 40px;
  width: auto;
}

.brand-text {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--blue);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: 3px solid var(--blue);
  padding: 4px 12px;
  box-shadow: var(--shadow-blue);
  transition: box-shadow 0.15s, transform 0.15s;
}

.brand-text:hover {
  box-shadow: 8px 8px 0 var(--blue);
  transform: translate(-2px, -2px);
  text-decoration: none;
}

.brand-badge {
  background: var(--red);
  color: var(--white);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  padding: 3px 10px;
  border: 2px solid var(--black);
  box-shadow: 3px 3px 0 var(--black);
}

/* 导航：header > nav > p > a */
.main-nav {
  padding: 0 16px;
}

.main-nav p {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 8px 0;
  align-items: center;
}

/* 药丸胶囊按钮，tap 区域 ≥40px */
.main-nav p a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 8px 18px;
  background: var(--surface2);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  border: 2px solid var(--white);
  border-radius: 999px;
  text-decoration: none;
  box-shadow: 3px 3px 0 var(--black);
  transition: background 0.15s, color 0.15s, box-shadow 0.15s, transform 0.15s;
  white-space: nowrap;
}

.main-nav p a:hover {
  background: var(--blue);
  color: var(--black);
  border-color: var(--black);
  box-shadow: 5px 5px 0 var(--black);
  transform: translate(-2px, -2px);
  text-decoration: none;
}

/* scroll-margin for sticky header */
article[id] {
  scroll-margin-top: calc(var(--topbar-h) + var(--nav-h) + 16px);
}

/* ============================================================
   Hero：文在上图在下，文案右对齐，100vh
   ============================================================ */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  background: var(--bg);
  border-bottom: 3px solid var(--blue);
  overflow: hidden;
}

.hero-text-layer {
  position: relative;
  z-index: 3;
  text-align: right;
  padding: 60px 40px 40px;
  max-width: 900px;
  align-self: flex-end;
}

.hero-eyebrow {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-bottom: 20px;
}

.badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 4px 12px;
  border: 2px solid var(--black);
  box-shadow: 3px 3px 0 var(--black);
}

.badge-red { background: var(--red); color: var(--white); }
.badge-blue { background: var(--blue); color: var(--black); }

.hero-h1 {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 6vw, 4rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: 0.04em;
  color: var(--white);
  text-shadow: 5px 5px 0 var(--blue);
  margin-bottom: 20px;
}

.hero-desc {
  font-size: 1rem;
  line-height: 1.7;
  color: #ccc;
  max-width: 560px;
  margin-left: auto;
  margin-bottom: 30px;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  padding: 10px 32px;
  background: var(--red);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  border: 3px solid var(--black);
  box-shadow: var(--shadow);
  text-decoration: none;
  transition: box-shadow 0.15s, transform 0.15s;
}

.hero-cta:hover {
  box-shadow: 8px 8px 0 var(--black);
  transform: translate(-3px, -3px);
  text-decoration: none;
}

.hero-media-layer {
  flex: 1;
  position: relative;
  min-height: 320px;
  z-index: 1;
}

.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
  border-top: 3px solid var(--blue);
  filter: contrast(1.05) saturate(1.1);
}

.hero-placeholder {
  width: 100%;
  height: 100%;
  min-height: 320px;
  background: var(--surface);
  border-top: 3px solid var(--blue);
  display: flex;
  align-items: center;
  justify-content: center;
}

.pixel-grid {
  display: block;
  width: 200px;
  height: 200px;
  background-image:
    linear-gradient(var(--blue) 1px, transparent 1px),
    linear-gradient(90deg, var(--blue) 1px, transparent 1px);
  background-size: 20px 20px;
  opacity: 0.18;
}

/* 浮动徽章装饰 */
.hero-deco {
  position: absolute;
  bottom: 40px;
  left: 40px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 10;
}

.deco-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  padding: 6px 14px;
  border: 3px solid var(--black);
  animation: deco-float 3s ease-in-out infinite;
}

.deco-badge.deco-1 {
  background: var(--blue);
  color: var(--black);
  box-shadow: 4px 4px 0 var(--black);
  animation-delay: 0s;
}

.deco-badge.deco-2 {
  background: var(--yellow);
  color: var(--black);
  box-shadow: 4px 4px 0 var(--black);
  animation-delay: 0.6s;
}

.deco-badge.deco-3 {
  background: var(--red);
  color: var(--white);
  box-shadow: 4px 4px 0 var(--black);
  animation-delay: 1.2s;
}

@keyframes deco-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

@media (prefers-reduced-motion: reduce) {
  .deco-badge { animation: none; }
}

/* ============================================================
   主内容区：main > article > figure/aside 交错
   ============================================================ */
.site-main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 60px 24px;
}

.content-section {
  display: grid;
  grid-template-columns: 1fr 280px;
  grid-template-rows: auto 1fr;
  gap: 32px;
  align-items: start;
}

.content-figure {
  grid-column: 1 / 2;
  grid-row: 1 / 2;
  border: 3px solid var(--blue);
  box-shadow: var(--shadow-blue);
  background: var(--surface);
  padding: 20px;
  margin: 0 0 8px;
}

.cyber-line-art {
  width: 100%;
  height: 6px;
  background: repeating-linear-gradient(
    90deg,
    var(--blue) 0px,
    var(--blue) 30px,
    transparent 30px,
    transparent 40px,
    var(--red) 40px,
    var(--red) 46px,
    transparent 46px,
    transparent 56px
  );
}

/* aside 在内容右侧 */
.content-aside {
  grid-column: 2 / 3;
  grid-row: 1 / 3;
  background: var(--surface);
  border: 3px solid var(--black);
  box-shadow: var(--shadow);
  padding: 24px;
  position: sticky;
  top: calc(var(--topbar-h) + var(--nav-h) + 24px);
  align-self: start;
}

.aside-title {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--blue);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.content-aside hr,
.content-body hr {
  border: none;
  border-top: 2px solid var(--blue);
  margin: 10px 0 16px;
}

.aside-nav-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 20px;
}

.aside-link {
  display: flex;
  align-items: center;
  min-height: 40px;
  padding: 6px 12px;
  background: var(--surface2);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  border: 2px solid var(--surface2);
  text-decoration: none;
  transition: background 0.12s, border-color 0.12s, box-shadow 0.12s, transform 0.12s;
}

.aside-link:hover {
  background: var(--blue);
  color: var(--black);
  border-color: var(--black);
  box-shadow: 3px 3px 0 var(--black);
  transform: translate(-1px, -1px);
  text-decoration: none;
}

.aside-badge-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.pixel-badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 3px 10px;
  border: 2px solid var(--black);
  background: var(--yellow);
  color: var(--black);
  box-shadow: 2px 2px 0 var(--black);
}

.pixel-badge.red { background: var(--red); color: var(--white); }
.pixel-badge.blue { background: var(--blue); color: var(--black); }

/* 正文内容区 */
.content-body {
  grid-column: 1 / 2;
  grid-row: 2 / 3;
  font-size: 1rem;
  line-height: 1.75;
  color: #e0e0e0;
}

/* ============================================================
   正文排版：page.content 内的元素
   ============================================================ */
.content-body h2,
.content-body h3 {
  font-family: var(--font-mono);
  font-weight: 700;
  letter-spacing: 0.06em;
  margin-top: 48px;
  margin-bottom: 12px;
  line-height: 1.25;
}

.content-body h2 {
  font-size: 1.6rem;
  color: var(--blue);
  border-left: 6px solid var(--blue);
  padding-left: 16px;
}

.content-body h2 + hr,
.content-body h3 + hr {
  border: none;
  border-top: 2px solid var(--red);
  margin: 8px 0 20px;
}

.content-body h3 {
  font-size: 1.2rem;
  color: var(--red);
}

.content-body p {
  margin-bottom: 16px;
}

.content-body ul,
.content-body ol {
  padding-left: 24px;
  margin-bottom: 16px;
}

.content-body ul { list-style: disc; }
.content-body ol { list-style: decimal; }

.content-body li {
  margin-bottom: 8px;
}

.content-body strong {
  color: var(--yellow);
  font-weight: 700;
}

.content-body a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.content-body a:hover {
  color: var(--red);
}

.content-body blockquote {
  border-left: 4px solid var(--red);
  background: var(--surface);
  padding: 16px 20px;
  margin: 24px 0;
  font-style: normal;
  box-shadow: 4px 4px 0 var(--black);
}

.content-body code {
  background: var(--surface2);
  border: 1px solid var(--surface2);
  padding: 2px 6px;
  font-family: var(--font-mono);
  font-size: 0.88em;
  color: var(--blue);
}

.content-body pre {
  background: var(--surface);
  border: 3px solid var(--black);
  box-shadow: var(--shadow);
  padding: 20px;
  overflow-x: auto;
  margin-bottom: 20px;
}

.content-body pre code {
  background: none;
  border: none;
  padding: 0;
}

.content-body hr {
  border: none;
  border-top: 2px solid var(--surface2);
  margin: 32px 0;
}

.content-body article {
  margin-bottom: 56px;
  padding-bottom: 32px;
  border-bottom: 2px solid var(--surface2);
}

.content-body article:last-child {
  border-bottom: none;
}

.content-body table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 24px;
  font-size: 0.9rem;
}

.content-body th,
.content-body td {
  border: 2px solid var(--surface2);
  padding: 10px 14px;
  text-align: left;
}

.content-body th {
  background: var(--surface);
  color: var(--blue);
  font-weight: 700;
}

/* ============================================================
   页脚：三栏 dl
   ============================================================ */
.site-footer {
  background: var(--black);
  border-top: 3px solid var(--blue);
  padding: 48px 24px 0;
  margin-top: 0;
}

.footer-brand-block {
  text-align: center;
  padding-bottom: 32px;
  border-bottom: 2px solid var(--surface2);
  margin-bottom: 40px;
}

.footer-mega-brand {
  font-family: var(--font-mono);
  font-size: clamp(2.5rem, 8vw, 6rem);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--white);
  text-shadow:
    6px 6px 0 var(--blue),
    12px 12px 0 var(--red);
  display: inline-block;
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  max-width: 1000px;
  margin: 0 auto 40px;
}

.footer-dl {
  display: block;
}

.footer-dl-title {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--blue);
  border-bottom: 2px solid var(--blue);
  padding-bottom: 8px;
  margin-bottom: 16px;
  display: block;
}

.footer-dl dd {
  font-size: 0.85rem;
  line-height: 1.6;
  color: #aaa;
  margin-bottom: 8px;
}

.footer-dl dd a {
  color: #aaa;
  text-decoration: none;
  transition: color 0.12s;
}

.footer-dl dd a:hover {
  color: var(--blue);
}

.footer-bottom {
  border-top: 2px solid var(--surface2);
  text-align: center;
  padding: 20px 24px;
}

.footer-bottom p {
  font-size: 0.78rem;
  color: #555;
  letter-spacing: 0.05em;
}

/* ============================================================
   Scroll Reveal
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; }
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 900px) {
  .content-section {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto;
  }

  .content-figure {
    grid-column: 1;
    grid-row: 1;
  }

  .content-aside {
    grid-column: 1;
    grid-row: 2;
    position: static;
    box-shadow: var(--shadow);
  }

  .content-body {
    grid-column: 1;
    grid-row: 3;
  }

  .footer-cols {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}

@media (max-width: 600px) {
  :root {
    --topbar-h: 36px;
    --nav-h: 130px;
  }

  .brand-row {
    padding: 10px 16px 8px;
    flex-wrap: wrap;
    gap: 8px;
  }

  .brand-text {
    font-size: 1.1rem;
  }

  .main-nav {
    padding: 0 10px;
  }

  .main-nav p {
    gap: 5px;
    padding: 8px 0;
  }

  .main-nav p a {
    font-size: 0.78rem;
    padding: 8px 14px;
    min-height: 40px;
  }

  .hero-text-layer {
    padding: 40px 20px 24px;
  }

  .hero-deco {
    left: 16px;
    bottom: 20px;
    gap: 8px;
  }

  .deco-badge {
    font-size: 0.75rem;
    padding: 4px 10px;
  }

  .site-main {
    padding: 40px 16px;
  }

  .footer-mega-brand {
    font-size: 2.2rem;
    text-shadow: 4px 4px 0 var(--blue), 8px 8px 0 var(--red);
  }

  .hero-h1 {
    font-size: 1.8rem;
  }

  article[id] {
    scroll-margin-top: calc(var(--topbar-h) + var(--nav-h) + 8px);
  }

  .top-bar {
    font-size: 0.72rem;
  }
}

/* ============================================================
   拼图细节
   ============================================================ */
.site-wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.site-main {
  flex: 1;
}

.content-section > figure,
.content-section > aside {
  display: block;
}

button[aria-expanded]{min-width:44px;min-height:44px}