/* 密室档案库 · 发布站壳层 */
:root {
  --bg0: #0c1016;
  --bg1: #141b24;
  --bg2: #1a2430;
  --line: #2a3a4c;
  --text: #e6edf5;
  --muted: #8b9aab;
  --accent: #5ec8b8;
  --accent-dim: #3a8f84;
  --warn: #d4a35c;
  --hot: #c45c5c;
  --font-display: "Noto Serif SC", "Songti SC", Georgia, serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "Share Tech Mono", "Cascadia Mono", ui-monospace, monospace;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(94, 200, 184, 0.12), transparent 55%),
    radial-gradient(900px 500px at 90% 0%, rgba(212, 163, 92, 0.08), transparent 50%),
    linear-gradient(180deg, var(--bg0) 0%, var(--bg1) 45%, #0a0e14 100%);
  line-height: 1.65;
}

a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

.wrap {
  width: min(1080px, calc(100% - 2rem));
  margin: 0 auto;
}

/* —— top nav —— */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(10px);
  background: color-mix(in srgb, var(--bg0) 82%, transparent);
  border-bottom: 1px solid var(--line);
}
.site-nav .inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1.25rem;
  padding: 0.85rem 0;
}
.brand-mark {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.06em;
  color: var(--text);
  text-decoration: none;
}
.brand-mark span {
  color: var(--accent);
  font-weight: 500;
  margin-left: 0.35em;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
}
.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1rem;
  margin-left: auto;
  font-size: 0.9rem;
}
.nav-links a {
  color: var(--muted);
  text-decoration: none;
}
.nav-links a:hover,
.nav-links a.is-active {
  color: var(--accent);
}
.nav-cta {
  display: inline-block;
  padding: 0.35rem 0.85rem;
  border: 1px solid var(--accent-dim);
  color: var(--accent) !important;
  text-decoration: none !important;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
}
.nav-cta:hover {
  background: color-mix(in srgb, var(--accent) 14%, transparent);
}
.nav-lang {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  padding: 0.28rem 0.55rem;
  border: 1px solid var(--line);
  color: var(--muted) !important;
  text-decoration: none !important;
}
.nav-lang:hover {
  color: var(--accent) !important;
  border-color: var(--accent-dim);
}

/* —— hero —— */
.hero {
  min-height: min(88vh, 720px);
  display: grid;
  align-content: center;
  padding: 3.5rem 0 4rem;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 8% -20% auto auto;
  width: min(520px, 70vw);
  height: min(520px, 70vw);
  border: 1px solid color-mix(in srgb, var(--accent) 25%, transparent);
  border-radius: 50%;
  opacity: 0.45;
  animation: pulse-ring 8s ease-in-out infinite;
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 18% -8% auto auto;
  width: min(360px, 50vw);
  height: min(360px, 50vw);
  border: 1px solid color-mix(in srgb, var(--warn) 18%, transparent);
  border-radius: 50%;
  opacity: 0.35;
  animation: pulse-ring 11s ease-in-out infinite reverse;
  pointer-events: none;
}
@keyframes pulse-ring {
  0%,
  100% {
    transform: scale(1);
    opacity: 0.35;
  }
  50% {
    transform: scale(1.04);
    opacity: 0.55;
  }
}
.hero-brand {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 6vw, 3.6rem);
  font-weight: 700;
  letter-spacing: 0.08em;
  margin: 0 0 0.6rem;
  line-height: 1.15;
  animation: rise 0.9s ease both;
}
.hero-brand em {
  font-style: normal;
  color: var(--accent);
}
.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2.4vw, 1.45rem);
  font-weight: 500;
  color: var(--muted);
  margin: 0 0 1rem;
  letter-spacing: 0.04em;
  animation: rise 0.9s 0.12s ease both;
}
.hero .lead {
  max-width: 36rem;
  color: var(--muted);
  margin: 0 0 1.75rem;
  font-size: 1rem;
  animation: rise 0.9s 0.22s ease both;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  animation: rise 0.9s 0.32s ease both;
}
@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.btn {
  display: inline-block;
  padding: 0.7rem 1.25rem;
  border: 1px solid var(--line);
  color: var(--text);
  text-decoration: none !important;
  font-size: 0.95rem;
  letter-spacing: 0.03em;
  transition: border-color 0.2s, background 0.2s, transform 0.2s;
}
.btn:hover {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  transform: translateY(-1px);
}
.btn-primary {
  border-color: var(--accent-dim);
  background: color-mix(in srgb, var(--accent) 16%, transparent);
  color: var(--accent);
}
.btn-primary:hover {
  background: color-mix(in srgb, var(--accent) 26%, transparent);
}

/* —— sections —— */
.section {
  padding: 2.75rem 0;
  border-top: 1px solid color-mix(in srgb, var(--line) 70%, transparent);
}
.section h2 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  letter-spacing: 0.06em;
  margin: 0 0 0.5rem;
}
.section .sub {
  color: var(--muted);
  margin: 0 0 1.5rem;
  max-width: 40rem;
  font-size: 0.95rem;
}

.link-rail {
  display: grid;
  gap: 0.85rem;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}
.link-rail a {
  display: block;
  padding: 1rem 1.1rem;
  border-left: 2px solid var(--accent-dim);
  background: color-mix(in srgb, var(--bg2) 70%, transparent);
  color: var(--text);
  text-decoration: none;
  transition: border-color 0.2s, background 0.2s;
}
.link-rail a:hover {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 8%, var(--bg2));
}
.link-rail strong {
  display: block;
  font-family: var(--font-display);
  letter-spacing: 0.04em;
  margin-bottom: 0.25rem;
}
.link-rail span {
  color: var(--muted);
  font-size: 0.85rem;
}

/* —— content pages —— */
.page-hero {
  padding: 2.5rem 0 1.25rem;
}
.page-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.5vw, 2.1rem);
  letter-spacing: 0.06em;
  margin: 0 0 0.5rem;
}
.page-hero p {
  margin: 0;
  color: var(--muted);
  max-width: 40rem;
}
.prose {
  padding: 0 0 3rem;
  max-width: 44rem;
}
.prose h2 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  margin: 1.75rem 0 0.6rem;
  letter-spacing: 0.04em;
}
.prose h3 {
  font-size: 1rem;
  margin: 1.25rem 0 0.4rem;
  color: var(--accent);
}
.prose p,
.prose li {
  color: color-mix(in srgb, var(--text) 88%, var(--muted));
  font-size: 0.95rem;
}
.prose ul {
  padding-left: 1.2rem;
}
.prose code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  color: var(--accent);
}
.prose .meta {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--muted);
}

.corp-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  padding-bottom: 3rem;
}
.corp-item {
  padding: 1.1rem 1.15rem;
  border-top: 2px solid var(--accent-dim);
  background: color-mix(in srgb, var(--bg2) 65%, transparent);
}
.corp-item h3 {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  letter-spacing: 0.04em;
}
.corp-item .tags {
  font-size: 0.78rem;
  color: var(--accent);
  margin-bottom: 0.5rem;
  letter-spacing: 0.03em;
}
.corp-item p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--muted);
}
.corp-item .motto {
  margin-top: 0.65rem;
  font-size: 0.85rem;
  color: var(--warn);
}

.changelog {
  padding-bottom: 3rem;
}
.changelog article {
  padding: 1rem 0;
  border-bottom: 1px solid var(--line);
}
.changelog h3 {
  margin: 0 0 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--accent);
}
.changelog ul {
  margin: 0.4rem 0 0;
  padding-left: 1.15rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 1.5rem 0 2.5rem;
  color: var(--muted);
  font-size: 0.8rem;
}
.site-footer .inner {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  justify-content: space-between;
}

@media (max-width: 640px) {
  .nav-links {
    margin-left: 0;
    width: 100%;
  }
  .hero {
    min-height: auto;
    padding-top: 2.5rem;
  }
}