@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;600;700&display=swap');

:root {
  --ink: #0d0d0d;
  --ink2: #121016;
  --vio: #8000ff;
  --mag: #ff00ff;
  --acid: #39ff14;
  --fg: #ece7fa;
  --dim: #9a92b4;
  --line: rgba(128, 0, 255, 0.42);
  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: 'IBM Plex Sans', system-ui, -apple-system, 'Segoe UI', sans-serif;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(1100px 560px at 8% -12%, rgba(128, 0, 255, 0.22), transparent 62%),
    radial-gradient(900px 480px at 100% 0, rgba(255, 0, 255, 0.15), transparent 56%),
    var(--ink);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.78;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 60;
  pointer-events: none;
  background: repeating-linear-gradient(180deg, rgba(255, 255, 255, 0.035) 0 1px, transparent 1px 3px);
  opacity: 0.7;
  mix-blend-mode: screen;
}

img {
  max-width: 100%;
}

a {
  color: var(--mag);
}

:focus-visible {
  outline: 2px solid var(--acid);
  outline-offset: 2px;
}

.skip {
  position: fixed;
  left: 12px;
  top: 12px;
  z-index: 95;
  transform: translateY(-180%);
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 10px 18px;
  border-radius: 10px;
  background: var(--mag);
  color: #0d0d0d;
  font-family: var(--mono);
  font-size: 15px;
  text-decoration: none;
  transition: transform 0.2s ease;
}

.skip:focus {
  transform: none;
}

/* 顶部 HUD */
.hud {
  position: sticky;
  top: 0;
  z-index: 70;
  padding: 10px 18px 0;
  background: linear-gradient(180deg, rgba(13, 13, 13, 0.97), rgba(13, 13, 13, 0.88));
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(6px);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 26px) 100%, 0 100%);
}

.brand-led {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 9px;
  border-bottom: 1px dashed rgba(255, 0, 255, 0.28);
}

.mark {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  min-width: 40px;
  border: 1px solid var(--mag);
  border-radius: 10px;
  border-bottom: 3px solid var(--mag);
  color: var(--mag);
  font-family: var(--mono);
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  text-shadow: 0 0 10px var(--mag);
  clip-path: polygon(0 0, 100% 0, 100% 70%, 76% 100%, 0 100%);
  overflow: hidden;
}

.mark img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.brand {
  margin-right: auto;
  font-family: var(--mono);
  font-size: 20px;
  letter-spacing: 0.14em;
  color: var(--fg);
  text-shadow: 0 0 14px rgba(128, 0, 255, 0.9);
}

.badge {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--acid);
  padding: 4px 10px;
  border: 1px solid rgba(57, 255, 20, 0.38);
  border-bottom: 2px solid var(--acid);
  border-radius: 10px;
  background: rgba(57, 255, 20, 0.06);
}

.menu-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0 10px;
}

.burger {
  min-height: 44px;
  padding: 10px 20px;
  font-family: var(--mono);
  font-size: 15px;
  letter-spacing: 0.12em;
  color: var(--mag);
  background: rgba(255, 0, 255, 0.06);
  border: 1px solid var(--mag);
  border-bottom: 2px solid var(--mag);
  border-radius: 10px;
  clip-path: polygon(0 0, 100% 0, 92% 100%, 0 100%);
  cursor: pointer;
  text-shadow: 0 0 8px rgba(255, 0, 255, 0.7);
}

.burger:hover {
  background: rgba(255, 0, 255, 0.18);
}

body.menu-open .burger {
  background: var(--mag);
  color: #0d0d0d;
  text-shadow: none;
}

.search {
  flex: 1 1 auto;
  max-width: 360px;
  margin: 0;
  display: flex;
}

.search input {
  width: 100%;
  min-height: 44px;
  padding: 10px 14px;
  color: var(--fg);
  font-family: var(--mono);
  font-size: 15px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line);
  border-bottom: 2px solid var(--vio);
  border-radius: 10px;
}

.search input::placeholder {
  color: #8a83a2;
}

.search input:focus {
  outline: none;
  border-color: var(--mag);
  box-shadow: 0 0 12px rgba(255, 0, 255, 0.35);
}

/* 主体骨架 */
.shell {
  display: grid;
  grid-template-columns: minmax(0, 264px) minmax(0, 1fr);
  align-items: start;
  gap: 28px;
  max-width: 1280px;
  margin: 0 auto;
  padding: 26px 18px 42px;
}

/* 左侧终端面板 */
.side {
  position: sticky;
  top: 112px;
  padding: 16px 16px 20px;
  font-family: var(--mono);
  background: linear-gradient(160deg, rgba(128, 0, 255, 0.14), rgba(255, 0, 255, 0.05));
  border: 1px solid var(--line);
  border-left: 3px solid var(--mag);
  border-bottom: 2px solid var(--vio);
  border-radius: 10px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}

.side h2 {
  margin: 0 0 8px;
  font-size: 14px;
  letter-spacing: 0.26em;
  color: var(--mag);
  text-shadow: 0 0 10px var(--mag);
}

.side hr {
  margin: 0;
}

.side nav ul {
  display: grid;
  gap: 2px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.side nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 9px 6px;
  font-size: 15px;
  color: var(--fg);
  text-decoration: none;
  border-bottom: 1px solid rgba(128, 0, 255, 0.2);
  border-radius: 10px;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.side nav a::before {
  content: "";
  width: 6px;
  height: 6px;
  flex: none;
  border: 1px solid var(--vio);
  transform: rotate(45deg);
  transition: background 0.18s ease, border-color 0.18s ease;
}

.side nav a:hover,
.side nav a:focus-visible {
  background: rgba(255, 0, 255, 0.12);
  color: #ffffff;
  border-bottom-color: var(--mag);
  text-shadow: 0 0 8px rgba(255, 0, 255, 0.8);
}

.side nav a:hover::before,
.side nav a:focus-visible::before {
  background: var(--mag);
  border-color: var(--mag);
}

.side nav li.dim {
  opacity: 0.34;
}

/* 全屏遮罩菜单（桌面与移动共用） */
body.menu-open {
  overflow: hidden;
}

body.menu-open .side {
  position: fixed;
  inset: 0;
  top: 0;
  z-index: 85;
  height: 100vh;
  overflow: auto;
  padding: 28px 22px 70px;
  border: 0;
  border-right: 2px solid var(--mag);
  border-radius: 0;
  clip-path: none;
  background: rgba(9, 8, 12, 0.97);
  backdrop-filter: blur(4px);
}

body.menu-open .side h2 {
  font-size: 18px;
}

body.menu-open .side nav ul {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 8px;
  margin-top: 22px;
}

body.menu-open .side nav a {
  font-size: 18px;
  padding: 14px 12px;
  border: 1px solid rgba(128, 0, 255, 0.45);
  border-bottom: 2px solid var(--mag);
}

body.menu-open .side nav li.dim {
  opacity: 1;
}

body.menu-open .side nav li.dim a {
  opacity: 0.36;
}

/* 首屏 */
.hero {
  position: relative;
  display: grid;
  align-content: end;
  min-height: 45vh;
  margin: 0 0 34px;
  padding: 44px 26px 56px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 10px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 42px), 0 100%);
  background: linear-gradient(180deg, rgba(128, 0, 255, 0.18), rgba(13, 13, 13, 0.92));
}

.hero-fig {
  position: absolute;
  inset: 0;
  z-index: 0;
  margin: 0;
}

.hero-fig::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(180deg, rgba(13, 13, 13, 0.22), rgba(13, 13, 13, 0.93) 74%),
    linear-gradient(90deg, rgba(255, 0, 255, 0.2), transparent 62%);
}

.hero-fig::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  background-image: linear-gradient(90deg, rgba(128, 0, 255, 0.3) 1px, transparent 1px);
  background-size: 64px 100%;
  opacity: 0.45;
  pointer-events: none;
}

.hero-img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(0.25) contrast(1.06) saturate(1.25);
  transform: scale(1.06);
  will-change: transform;
}

.hero-copy {
  position: relative;
  z-index: 3;
  max-width: 740px;
}

.tag {
  display: inline-block;
  margin: 0 0 14px;
  padding: 5px 12px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--acid);
  background: rgba(57, 255, 20, 0.07);
  border: 1px solid rgba(57, 255, 20, 0.42);
  border-left: 3px solid var(--acid);
  border-radius: 10px;
  transform: rotate(-1.5deg);
  animation: tagFloat 5s ease-in-out infinite;
}

.hero h1 {
  margin: 0 0 14px;
  font-family: var(--mono);
  font-size: clamp(26px, 4.6vw, 50px);
  line-height: 1.18;
  letter-spacing: 0.01em;
  text-shadow: 0 0 18px rgba(255, 0, 255, 0.65), 2px 2px 0 rgba(128, 0, 255, 0.55);
  animation: heroGlitch 7s steps(1) infinite;
}

.lede {
  max-width: 62ch;
  margin: 0;
  font-size: 16px;
  color: #c9c2de;
}

/* 正文 */
.content {
  max-width: 900px;
  font-size: 17px;
}

.content article {
  position: relative;
  margin: 0 0 46px;
  padding: 8px 0 8px 22px;
  border-left: 2px solid var(--mag);
  border-radius: 10px;
  scroll-margin-top: 132px;
}

.content article::before {
  content: "";
  position: absolute;
  left: -2px;
  top: 8px;
  width: 2px;
  height: 36px;
  background: var(--acid);
  box-shadow: 0 0 12px var(--acid);
}

.content article:hover {
  background: linear-gradient(90deg, rgba(128, 0, 255, 0.08), transparent 72%);
}

.content h2 {
  margin: 0 0 10px;
  font-family: var(--mono);
  font-size: clamp(21px, 2.6vw, 27px);
  line-height: 1.36;
  letter-spacing: 0.01em;
  text-shadow: 0 0 14px rgba(128, 0, 255, 0.85);
}

.content h3 {
  margin: 26px 0 8px;
  font-family: var(--mono);
  font-size: 19px;
  line-height: 1.4;
  color: var(--mag);
}

hr {
  height: 2px;
  margin: 0 0 20px;
  border: 0;
  background: linear-gradient(90deg, var(--mag), var(--vio) 46%, transparent);
  box-shadow: 0 0 10px rgba(255, 0, 255, 0.5);
}

.content p {
  margin: 0 0 16px;
  color: #dbd5ec;
}

.content a {
  color: var(--mag);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.content a:hover {
  color: #fff;
  text-shadow: 0 0 10px var(--mag);
}

.content ul,
.content ol {
  margin: 0 0 18px;
  padding-left: 22px;
}

.content li {
  margin: 0 0 8px;
}

.content li::marker {
  color: var(--vio);
}

.content strong,
.content b {
  color: #fff;
  font-weight: 600;
}

.content blockquote {
  margin: 0 0 18px;
  padding: 10px 16px;
  font-family: var(--mono);
  font-size: 15px;
  color: #d6f9d0;
  background: rgba(57, 255, 20, 0.05);
  border-left: 2px solid var(--acid);
  border-radius: 10px;
}

.content img {
  height: auto;
  border: 1px solid var(--line);
  border-bottom: 2px solid var(--mag);
  border-radius: 10px;
}

.content figure {
  margin: 0 0 18px;
}

.content figcaption {
  margin-top: 8px;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--dim);
}

.content table {
  width: 100%;
  margin: 0 0 18px;
  border-collapse: collapse;
  font-size: 15.5px;
}

.content th,
.content td {
  padding: 9px 12px;
  text-align: left;
  border: 1px solid rgba(128, 0, 255, 0.3);
}

.content th {
  font-family: var(--mono);
  color: var(--mag);
  background: rgba(128, 0, 255, 0.12);
}

.top {
  margin: 0 0 8px;
  font-family: var(--mono);
}

.top a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 9px 16px;
  color: var(--dim);
  font-size: 14px;
  text-decoration: none;
  border: 1px solid var(--line);
  border-bottom: 2px solid var(--vio);
  border-radius: 10px;
}

.top a:hover {
  color: var(--mag);
  border-color: var(--mag);
}

/* 页脚 */
.foot {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-areas:
    "cta links"
    "copy tag";
  align-items: center;
  gap: 14px 26px;
  max-width: 1280px;
  margin: 0 auto;
  padding: 34px 18px 46px;
  font-family: var(--mono);
  border-top: 1px solid var(--line);
}

.foot-cta {
  grid-area: cta;
  margin: 0;
  font-size: clamp(20px, 3vw, 30px);
  line-height: 1.2;
  letter-spacing: 0.05em;
}

.foot-cta a {
  color: var(--fg);
  text-decoration: none;
  background: linear-gradient(90deg, var(--vio), var(--mag));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.foot-links {
  grid-area: links;
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0 14px;
  margin: 0;
  font-size: 13.5px;
}

.foot-links a {
  display: inline-block;
  min-height: 44px;
  padding: 11px 0;
  color: var(--dim);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.foot-links a:hover {
  color: var(--mag);
  border-bottom-color: var(--mag);
}

.foot-copy {
  grid-area: copy;
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: var(--dim);
}

.foot-tag {
  grid-area: tag;
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--acid);
  text-align: right;
}

/* 进入动画 */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

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

@keyframes tagFloat {
  0%, 100% { transform: rotate(-1.5deg) translateY(0); }
  50% { transform: rotate(-1.5deg) translateY(-5px); }
}

@keyframes heroGlitch {
  0%, 92%, 100% { transform: none; text-shadow: 0 0 18px rgba(255, 0, 255, 0.65), 2px 2px 0 rgba(128, 0, 255, 0.55); }
  93% { transform: skewX(-2deg) translateX(-2px); text-shadow: 3px 0 0 rgba(57, 255, 20, 0.7), -3px 0 0 rgba(255, 0, 255, 0.8); }
  95% { transform: skewX(1.5deg) translateX(2px); text-shadow: -2px 0 0 rgba(57, 255, 20, 0.7), 2px 0 0 rgba(128, 0, 255, 0.9); }
  97% { transform: none; }
}

/* 移动端 */
@media (max-width: 899px) {
  body {
    font-size: 16.5px;
  }

  .hud {
    padding: 8px 14px 0;
  }

  .brand {
    font-size: 17px;
    letter-spacing: 0.1em;
  }

  .badge {
    display: none;
  }

  .search {
    max-width: none;
  }

  .shell {
    grid-template-columns: minmax(0, 1fr);
    gap: 20px;
    padding: 18px 14px 32px;
  }

  .side {
    position: fixed;
    inset: 0 38px 0 0;
    top: 0;
    z-index: 85;
    height: 100vh;
    overflow: auto;
    padding: 24px 18px 70px;
    border: 0;
    border-right: 2px solid var(--mag);
    border-radius: 0;
    clip-path: none;
    background: rgba(9, 8, 12, 0.97);
    transform: translateX(-104%);
    transition: transform 0.28s ease;
  }

  body.menu-open .side {
    transform: none;
  }

  .hero {
    min-height: 44vh;
    padding: 34px 18px 46px;
  }

  .content {
    font-size: 17px;
  }

  .content article {
    padding-left: 16px;
  }

  .foot {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas:
      "cta"
      "links"
      "copy"
      "tag";
    justify-items: start;
    gap: 10px;
    padding: 28px 14px 40px;
  }

  .foot-links {
    justify-content: flex-start;
  }

  .foot-tag {
    text-align: left;
  }
}

@media (min-width: 900px) {
  .side {
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

  .reveal {
    opacity: 1 !important;
    transform: none !important;
  }

  .hero-img {
    transform: none !important;
  }
}

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