@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700;800&display=swap');

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

:root {
  --neon: #87ff71;
  --cyan: #01cdfe;
  --violet: #b967ff;
  --ink: #192617;
  --bg: #08110d;
  --paper: #e9fff3;
  --dim: #9cc3ae;
  --line: rgba(135, 255, 113, .22);
  --card: rgba(1, 205, 254, .06);
  --r: 18px;
  --maxw: 1180px;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 120px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  overflow-x: hidden;
  background: var(--bg);
  color: var(--paper);
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-size: 17px;
  line-height: 1.72;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background:
    radial-gradient(120% 70% at 50% -15%, rgba(1, 205, 254, .3), transparent 62%),
    radial-gradient(90% 60% at 50% 112%, rgba(135, 255, 113, .22), transparent 60%),
    linear-gradient(180deg, #07100b, #0c1a14 58%, #08110d);
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: .55;
  background-image: repeating-linear-gradient(180deg, rgba(255, 255, 255, .05) 0 1px, transparent 1px 3px);
}

a { color: var(--neon); }
img { display: block; max-width: 100%; height: auto; }

/* 顶栏 */
.top {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(8, 17, 13, .88);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}

.ticker {
  margin: 0;
  padding: .45rem .9rem;
  border-bottom: 1px solid var(--line);
  text-align: center;
  font-size: 14px;
  letter-spacing: .3em;
  color: var(--neon);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  text-shadow: 0 0 10px rgba(135, 255, 113, .6);
}

.bar {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: .55rem 1rem;
}

.brand {
  margin: 0;
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: .34em;
  white-space: nowrap;
  color: var(--paper);
  text-shadow: 0 0 12px rgba(1, 205, 254, .75);
}

.menu { max-width: 100%; overflow-x: auto; scrollbar-width: none; }
.menu::-webkit-scrollbar { display: none; }

.menu ol {
  display: grid;
  grid-template-columns: repeat(4, max-content) minmax(150px, auto) repeat(3, max-content);
  justify-content: center;
  align-items: center;
  gap: .4rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.menu li:nth-child(1) { grid-column: 1; }
.menu li:nth-child(2) { grid-column: 2; }
.menu li:nth-child(3) { grid-column: 3; }
.menu li:nth-child(4) { grid-column: 4; }
.menu li:nth-child(5) { grid-column: 6; }
.menu li:nth-child(6) { grid-column: 7; }
.menu li:nth-child(7) { grid-column: 8; }

.menu a {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 0 1rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--paper);
  font-size: 16px;
  font-weight: 600;
  white-space: nowrap;
  text-decoration: none;
  transition: color .2s, background .2s, box-shadow .2s, transform .2s;
}

.menu a:hover,
.menu a:focus-visible {
  color: var(--ink);
  background: linear-gradient(120deg, var(--neon), var(--cyan));
  box-shadow: 0 0 22px rgba(135, 255, 113, .5);
  transform: translateY(-1px);
}

/* 首屏 */
.hero {
  position: relative;
  display: grid;
  grid-template-columns: 1.02fr .98fr;
  align-items: center;
  gap: 2rem;
  max-width: var(--maxw);
  min-height: 100vh;
  margin: 0 auto;
  padding: 3rem 1.4rem;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  left: -10%;
  right: -10%;
  bottom: 7%;
  height: 110px;
  z-index: -1;
  background: linear-gradient(90deg, var(--neon), var(--cyan), var(--violet));
  transform: skewY(-6deg);
  filter: blur(2px);
  opacity: .17;
}

.hero h1 {
  position: relative;
  margin: 0 0 1.1rem;
  font-size: clamp(2.1rem, 5.6vw, 4rem);
  line-height: 1.06;
  font-weight: 800;
  letter-spacing: -.02em;
  color: #fff;
  text-shadow: 0 0 20px rgba(135, 255, 113, .55), 0 0 44px rgba(1, 205, 254, .4);
}

.hero h1::before,
.hero h1::after {
  content: attr(data-text);
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero h1::before {
  color: var(--cyan);
  opacity: .7;
  clip-path: inset(0 0 56% 0);
  animation: glitch-a 3.8s steps(2) infinite;
}

.hero h1::after {
  color: var(--neon);
  opacity: .65;
  clip-path: inset(56% 0 0 0);
  animation: glitch-b 4.6s steps(2) infinite;
}

@keyframes glitch-a {
  0%, 100% { transform: translate(2px, 0); }
  45% { transform: translate(-3px, 1px); }
  70% { transform: translate(1px, -1px); }
}

@keyframes glitch-b {
  0%, 100% { transform: translate(-2px, 0); }
  50% { transform: translate(3px, -1px); }
  80% { transform: translate(-1px, 1px); }
}

.hero .lead {
  margin: 0 0 1.7rem;
  max-width: 42ch;
  color: var(--dim);
  font-size: 17px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 1.6rem;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 700;
  text-decoration: none;
  color: var(--ink);
  background: linear-gradient(120deg, var(--neon), var(--cyan));
  box-shadow: 0 0 26px rgba(1, 205, 254, .45);
  transition: transform .2s, box-shadow .2s;
}

.btn:hover { transform: translateY(-2px); box-shadow: 0 0 34px rgba(135, 255, 113, .62); }

.hero-art { position: relative; }

.hero-art figure {
  margin: 0;
  min-height: 300px;
  border: 1px solid var(--line);
  border-radius: 24px;
  overflow: hidden;
  background: linear-gradient(160deg, rgba(135, 255, 113, .18), rgba(1, 205, 254, .14));
  box-shadow: 0 30px 70px rgba(0, 0, 0, .5);
  clip-path: polygon(0 4%, 100% 0, 100% 96%, 0 100%);
}

.hero-art img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  filter: saturate(1.1) contrast(1.05);
}

.hero-art::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .5;
  mix-blend-mode: screen;
  background-image:
    linear-gradient(rgba(1, 205, 254, .16) 1px, transparent 1px),
    linear-gradient(90deg, rgba(135, 255, 113, .14) 1px, transparent 1px);
  background-size: 38px 38px;
  clip-path: polygon(0 4%, 100% 0, 100% 96%, 0 100%);
}

/* 主区 */
main { padding: 0 1.4rem 3rem; }

.wrap {
  display: grid;
  grid-template-columns: 248px minmax(0, 1fr);
  align-items: start;
  gap: 2.2rem;
  max-width: var(--maxw);
  margin: 0 auto;
}

.side {
  position: sticky;
  top: 132px;
  padding: 1rem;
  border: 1px solid var(--line);
  border-bottom: 3px solid var(--cyan);
  border-radius: var(--r);
  background: var(--card);
}

.side h2 {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .26em;
  color: var(--cyan);
  text-shadow: 0 0 12px rgba(1, 205, 254, .5);
}

hr {
  height: 2px;
  margin: 1rem 0;
  border: 0;
  background: linear-gradient(90deg, var(--neon), var(--cyan), transparent);
}

.side hr { margin: .7rem 0 .8rem; }

.side ol { display: grid; gap: .2rem; margin: 0; padding: 0; list-style: none; }

.side a {
  display: flex;
  align-items: center;
  min-height: 42px;
  padding: .2rem .55rem;
  border-left: 2px solid transparent;
  border-radius: 12px;
  color: var(--dim);
  font-size: 16px;
  text-decoration: none;
}

.side a:hover {
  color: var(--neon);
  border-left-color: var(--neon);
  background: rgba(135, 255, 113, .08);
}

.post { padding-bottom: 1rem; }

.content article {
  position: relative;
  margin: 0 0 2rem;
  padding: 1.6rem 1.4rem 1.8rem;
  border: 1px solid var(--line);
  border-bottom: 3px solid var(--neon);
  border-radius: var(--r);
  background: rgba(255, 255, 255, .022);
  scroll-margin-top: 140px;
}

.content h2 {
  margin: 0;
  font-size: clamp(1.4rem, 3.4vw, 1.95rem);
  line-height: 1.25;
  font-weight: 800;
  letter-spacing: -.01em;
  color: #fff;
  text-shadow: 0 0 16px rgba(135, 255, 113, .35);
}

.content h2 + hr { margin: .85rem 0 1.1rem; }

.content h3 {
  margin: 1.6rem 0 .5rem;
  font-size: 17px;
  font-weight: 700;
  color: var(--cyan);
}

.content p { margin: 0 0 1rem; }
.content ul, .content ol { margin: 0 0 1rem; padding-left: 1.3rem; }
.content li { margin: .35rem 0; }
.content a { color: var(--cyan); text-underline-offset: 3px; }
.content strong { color: #fff; }

.content blockquote {
  margin: 1.2rem 0;
  padding: .9rem 1.1rem;
  border-left: 3px solid var(--neon);
  border-radius: 0 14px 14px 0;
  background: rgba(135, 255, 113, .07);
  color: #d8f6e4;
}

.content img { margin: 1rem 0; border-radius: 14px; }

/* 色带 */
.band {
  max-width: var(--maxw);
  margin: 1rem auto 3rem;
  padding: 2.6rem 1.4rem;
  text-align: center;
  background: linear-gradient(120deg, var(--neon), var(--cyan));
  clip-path: polygon(0 12%, 100% 0, 100% 88%, 0 100%);
}

.band .btn {
  min-height: 52px;
  padding: 0 2rem;
  font-size: 17px;
  color: var(--neon);
  background: var(--ink);
  box-shadow: none;
}

.band .btn:hover { box-shadow: 0 0 26px rgba(25, 38, 23, .7); }

/* 页脚 */
.foot {
  padding: 1.6rem 1.2rem 2.2rem;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(1, 205, 254, .07), rgba(135, 255, 113, .04));
}

.foot-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: .6rem 1.6rem;
  max-width: var(--maxw);
  margin: 0 auto;
  text-align: center;
}

.foot-brand {
  font-weight: 800;
  letter-spacing: .3em;
  color: var(--paper);
  text-shadow: 0 0 12px rgba(135, 255, 113, .55);
}

.foot-nav ol {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: .2rem .9rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.foot-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  color: var(--dim);
  font-size: 16px;
  text-decoration: none;
}

.foot-nav a:hover { color: var(--neon); }
.foot-copy { font-size: 16px; color: var(--dim); }

/* 滚动显现 */
.pre { opacity: 0; transform: translateY(22px); }
.in { opacity: 1; transform: none; transition: opacity .6s ease, transform .6s ease; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .pre { opacity: 1; transform: none; }
  .hero h1::before, .hero h1::after { animation: none; }
  .btn, .menu a { transition: none; }
}

@media (min-width: 861px) {
  .brand {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
  }
}

@media (max-width: 860px) {
  html { scroll-padding-top: 190px; }

  .bar { flex-direction: column; padding: .5rem .7rem .7rem; }
  .brand { font-size: .95rem; }

  .menu { width: 100%; }
  .menu ol { display: flex; justify-content: flex-start; gap: .4rem; }
  .menu a { padding: 0 .85rem; }

  .hero {
    grid-template-columns: 1fr;
    gap: 1.4rem;
    min-height: 0;
    padding: 2rem 1.1rem 0;
  }

  .hero h1 { font-size: clamp(1.9rem, 8.4vw, 2.6rem); }
  .hero-art { order: 2; }
  .hero-art img { aspect-ratio: 16 / 11; }

  main { padding: 0 1.1rem 2rem; }
  .wrap { grid-template-columns: 1fr; gap: 1.4rem; }
  .side { position: static; top: auto; }
  .side ol { display: flex; flex-wrap: wrap; gap: .35rem; }
  .side a { padding: 0 .8rem; border: 1px solid var(--line); border-radius: 999px; }
  .side a:hover { border-color: var(--neon); }

  .content article { padding: 1.2rem 1rem 1.4rem; scroll-margin-top: 200px; }
  .band { margin: 2rem auto; padding: 2rem 1rem; }
}

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