:root {
  color-scheme: dark;
  --mint: #99ffcc;
  --neon: #00ff41;
  --ink: #001e3c;
  --ink2: #03284a;
  --txt: #e8fff6;
  --dim: rgba(232, 255, 246, 0.62);
  --line: rgba(153, 255, 204, 0.24);
  --line-soft: rgba(153, 255, 204, 0.13);
  --card: rgba(3, 40, 74, 0.62);
  --serif: "EB Garamond", "Songti SC", "Source Han Serif SC", Georgia, serif;
  --sans: "Lato", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(120% 60% at 8% -8%, #07405a 0%, rgba(7, 64, 90, 0) 58%),
    radial-gradient(90% 50% at 92% 4%, rgba(0, 255, 65, 0.16) 0%, rgba(0, 255, 65, 0) 60%),
    var(--ink);
  color: var(--txt);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.8;
  font-weight: 400;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image: radial-gradient(rgba(153, 255, 204, 0.18) 1px, transparent 1.5px);
  background-size: 24px 24px;
  opacity: 0.45;
  -webkit-mask-image: radial-gradient(130% 90% at 50% 0%, #000 0%, transparent 78%);
  mask-image: radial-gradient(130% 90% at 50% 0%, #000 0%, transparent 78%);
}

header, aside, main, footer { position: relative; z-index: 1; }

a { color: var(--mint); text-decoration: none; }

a:hover { color: var(--neon); }

h1, h2, h3 { font-family: var(--serif); font-weight: 600; letter-spacing: 0.005em; }

img { max-width: 100%; height: auto; }

.skip {
  position: fixed;
  left: 14px;
  top: -70px;
  z-index: 90;
  padding: 11px 18px;
  border-radius: 999px;
  background: var(--mint);
  color: var(--ink);
  font-size: 16px;
  font-weight: 700;
  transition: top 0.22s ease;
}

.skip:focus { top: 12px; color: var(--ink); }

/* 顶栏 */
.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px clamp(16px, 4vw, 44px);
  border-bottom: 1px solid var(--line-soft);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 4px 6px 4px 0;
  color: var(--txt);
}

.brand:hover { color: var(--txt); }

.logo {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid var(--line);
  flex: none;
}

.brand-name {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0.06em;
}

.cta {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 10px 22px;
  border-radius: 999px;
  background: linear-gradient(120deg, var(--mint), var(--neon));
  color: var(--ink);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.04em;
  white-space: nowrap;
  box-shadow: 0 0 0 1px rgba(153, 255, 204, 0.4), 0 10px 26px -14px var(--neon);
}

.cta:hover { color: var(--ink); filter: brightness(1.08); }

/* 粘性胶囊锚点条 */
.dock {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(0, 24, 48, 0.82);
  border-bottom: 1px solid var(--line-soft);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}

.dock-nav ul {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 10px clamp(16px, 4vw, 44px);
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.dock-nav ul::-webkit-scrollbar { display: none; }

.dock-nav a {
  display: flex;
  align-items: center;
  min-height: 40px;
  padding: 8px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--dim);
  font-size: 16px;
  white-space: nowrap;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.dock-nav a:hover,
.dock-nav a.on {
  color: var(--mint);
  border-color: var(--mint);
  background: rgba(153, 255, 204, 0.1);
}

/* 首屏 */
.hero {
  position: relative;
  min-height: 45vh;
  display: flex;
  align-items: flex-end;
  justify-content: flex-end;
  padding: clamp(40px, 8vw, 74px) clamp(18px, 6vw, 78px) clamp(30px, 5vw, 52px);
  overflow: hidden;
  text-align: right;
  border-bottom: 1px solid var(--line-soft);
}

.hero-in { position: relative; z-index: 2; max-width: 22ch; }

.hero h1 {
  margin: 0;
  font-size: clamp(2.5rem, 8.5vw, 5.6rem);
  line-height: 1.03;
  font-weight: 700;
  letter-spacing: -0.01em;
  background: linear-gradient(160deg, #ffffff 0%, var(--mint) 46%, var(--neon) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.blobs {
  position: absolute;
  inset: -18% -6% 0;
  z-index: 1;
  pointer-events: none;
  will-change: transform;
}

.blob {
  position: absolute;
  display: block;
  filter: blur(48px);
  opacity: 0.4;
  border-radius: 46% 54% 62% 38% / 52% 40% 60% 48%;
  animation: breathe 11s ease-in-out infinite alternate;
}

.b1 {
  width: 46vw;
  height: 46vw;
  left: -6vw;
  top: 12%;
  background: radial-gradient(circle at 35% 35%, var(--neon), rgba(0, 255, 65, 0) 68%);
}

.b2 {
  width: 38vw;
  height: 38vw;
  right: 4vw;
  top: -8%;
  background: radial-gradient(circle at 55% 45%, var(--mint), rgba(153, 255, 204, 0) 70%);
  animation-duration: 14s;
  animation-delay: -3s;
}

.b3 {
  width: 30vw;
  height: 30vw;
  left: 34vw;
  bottom: -12%;
  background: radial-gradient(circle at 50% 50%, #66e0ff, rgba(102, 224, 255, 0) 70%);
  opacity: 0.26;
  animation-duration: 17s;
  animation-delay: -6s;
}

@keyframes breathe {
  0% { transform: scale(0.94) translate3d(0, 0, 0); border-radius: 46% 54% 62% 38% / 52% 40% 60% 48%; opacity: 0.3; }
  100% { transform: scale(1.1) translate3d(0, -14px, 0); border-radius: 60% 40% 42% 58% / 44% 62% 38% 56%; opacity: 0.52; }
}

.grid-dots {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background-image: radial-gradient(rgba(0, 255, 65, 0.55) 1.5px, transparent 1.7px);
  background-size: 27px 27px;
  opacity: 0.3;
  -webkit-mask-image: linear-gradient(205deg, #000 0%, rgba(0, 0, 0, 0.1) 62%, transparent 88%);
  mask-image: linear-gradient(205deg, #000 0%, rgba(0, 0, 0, 0.1) 62%, transparent 88%);
}

/* 主区 */
.wrap {
  max-width: 1180px;
  margin: 0 auto;
  padding: clamp(26px, 5vw, 56px) clamp(16px, 4vw, 32px) 40px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 274px;
  gap: clamp(20px, 3vw, 36px);
  align-items: start;
}

.col { min-width: 0; }

.prose {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--card);
  padding: clamp(20px, 3.4vw, 46px);
}

.art-h {
  margin: 0;
  font-size: clamp(1.7rem, 3.4vw, 2.2rem);
  line-height: 1.25;
  color: var(--mint);
}

.subtitle {
  margin: 8px 0 0;
  color: var(--dim);
  font-size: 16px;
  line-height: 1.7;
}

.prose > div {
  scroll-margin-top: 96px;
  padding-top: 4px;
}

.prose > div + div {
  margin-top: 2.6em;
  padding-top: 2.2em;
  border-top: 1px solid var(--line-soft);
}

.prose h2 {
  margin: 0 0 0.55em;
  font-size: clamp(1.45rem, 3vw, 1.9rem);
  line-height: 1.35;
  color: var(--mint);
}

.prose h2::before {
  content: "";
  display: block;
  width: 42px;
  height: 3px;
  margin-bottom: 14px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--neon), rgba(0, 255, 65, 0));
}

.prose h3 {
  margin: 1.8em 0 0.5em;
  font-size: 1.2rem;
  color: var(--txt);
}

.prose p { margin: 0 0 1.05em; }

.prose > p,
.prose > div > p { color: rgba(232, 255, 246, 0.9); }

.prose ul,
.prose ol { margin: 0 0 1.15em; padding-left: 1.3em; }

.prose li { margin: 0.35em 0; }

.prose li::marker { color: var(--neon); }

.prose strong { color: var(--mint); font-weight: 700; }

.prose blockquote {
  margin: 1.4em 0;
  padding: 12px 20px;
  border-left: 3px solid var(--neon);
  border-radius: 0 14px 14px 0;
  background: rgba(153, 255, 204, 0.07);
  color: var(--dim);
}

.prose blockquote p:last-child { margin-bottom: 0; }

.prose a { border-bottom: 1px solid var(--line); }

.prose img { border-radius: 18px; border: 1px solid var(--line-soft); }

.prose figure { margin: 1.5em 0; }

.prose figcaption { font-size: 15px; color: var(--dim); margin-top: 8px; }

.prose pre {
  overflow-x: auto;
  padding: 14px 16px;
  border-radius: 14px;
  background: rgba(0, 16, 32, 0.7);
  border: 1px solid var(--line-soft);
  font-size: 15px;
}

.prose code { font-family: ui-monospace, Menlo, Consolas, monospace; }

.reveal { opacity: 0; transform: translate3d(0, 20px, 0); transition: opacity 0.7s ease, transform 0.7s ease; }

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

/* 侧栏 */
.side-box {
  position: sticky;
  top: 92px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(0, 24, 48, 0.58);
  padding: 18px 16px;
}

.side-label {
  margin: 0 0 12px;
  font-family: var(--serif);
  font-size: 19px;
  letter-spacing: 0.05em;
  color: var(--mint);
}

.side-nav ul { margin: 0; padding: 0; list-style: none; }

.side-nav a {
  display: flex;
  align-items: center;
  gap: 9px;
  min-height: 40px;
  padding: 7px 2px;
  color: var(--dim);
  font-size: 16px;
  line-height: 1.45;
  border-bottom: 1px dashed rgba(153, 255, 204, 0.1);
}

.side-nav li:last-child a { border-bottom: 0; }

.side-nav a::before {
  content: "";
  width: 7px;
  height: 7px;
  flex: none;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: transparent;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.side-nav a:hover { color: var(--mint); }

.side-nav a:hover::before { background: var(--neon); border-color: var(--neon); }

.to-top {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  margin-top: 14px;
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 16px;
  color: var(--mint);
}

.to-top:hover { background: rgba(153, 255, 204, 0.12); }

.prose .to-top { margin-top: 2.4em; }

/* 页脚 */
footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px 28px;
  padding: 26px clamp(16px, 4vw, 44px);
  border-top: 1px solid var(--line);
  background: rgba(0, 18, 36, 0.6);
}

.foot-brand a {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-height: 44px;
  color: var(--txt);
  font-family: var(--serif);
  font-size: 18px;
  letter-spacing: 0.05em;
}

.foot-nav { flex: 1 1 320px; }

.foot-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.foot-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 6px 2px;
  color: var(--dim);
  font-size: 16px;
}

.foot-copy { flex: 0 0 auto; }

.foot-copy p {
  margin: 0;
  color: var(--dim);
  font-size: 15px;
  letter-spacing: 0.05em;
}

@media (max-width: 900px) {
  .wrap { grid-template-columns: minmax(0, 1fr); }
  .side-box { position: static; }
  .side { order: 2; }
  .hero { min-height: 40vh; text-align: left; justify-content: flex-start; }
  .hero-in { max-width: none; }
}

@media (max-width: 560px) {
  body { font-size: 17px; }
  .brand-name { font-size: 19px; letter-spacing: 0.03em; }
  .cta { padding: 9px 16px; }
  .prose { padding: 18px 16px; border-radius: 16px; }
  .hero { padding: 34px 18px 26px; }
  .prose h2::before { margin-bottom: 10px; }
  footer { flex-direction: column; align-items: flex-start; }
  .foot-copy { align-self: center; }
  .foot-nav { flex: 1 1 auto; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .blob { animation: none; }
  .reveal { opacity: 1; transform: none; transition: none; }
  * { transition-duration: 0.01ms !important; }
}

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