:root {
  color-scheme: light dark;
  --bg: #f3ede3;
  --bg-top: #faf5ee;
  --bg-glow-left: rgba(228, 157, 88, 0.24);
  --bg-glow-right: rgba(68, 149, 138, 0.2);
  --grid-line: rgba(118, 94, 72, 0.035);
  --surface: rgba(255, 251, 246, 0.82);
  --surface-strong: rgba(255, 249, 242, 0.96);
  --surface-border: rgba(113, 81, 56, 0.14);
  --text: #1f1916;
  --muted: #6b6057;
  --brand: #b9602d;
  --brand-deep: #7b3923;
  --brand-soft: rgba(185, 96, 45, 0.12);
  --accent: #196c65;
  --accent-soft: rgba(25, 108, 101, 0.12);
  --shadow: 0 26px 70px rgba(70, 43, 25, 0.12);
  --hero-glass: rgba(255, 255, 255, 0.52);
  --hero-glass-border: rgba(113, 81, 56, 0.1);
  --toggle-surface: rgba(255, 255, 255, 0.68);
  --toggle-border: rgba(113, 81, 56, 0.14);
  --toggle-text: #5b4c41;
  --card-chip-bg: rgba(25, 108, 101, 0.08);
  --card-chip-text: #155952;
  --entry-surface: rgba(255, 255, 255, 0.58);
  --entry-border: rgba(113, 81, 56, 0.08);
  --entry-hover-border: rgba(185, 96, 45, 0.2);
  --entry-hover-shadow: 0 12px 24px rgba(70, 43, 25, 0.08);
  --domain-bg: rgba(86, 66, 49, 0.08);
  --domain-text: #4e433a;
  --ambient-left: rgba(210, 129, 62, 0.28);
  --ambient-right: rgba(53, 137, 127, 0.22);
  --radius-xl: 30px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --layout: 1180px;
  --font-title: "Avenir Next", "Segoe UI Variable Display", "PingFang SC",
    "Hiragino Sans GB", "Noto Sans SC", sans-serif;
  --font-body: "Source Han Sans SC", "PingFang SC", "Noto Sans SC",
    "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  color: var(--text);
  overflow-x: clip;
  background:
    radial-gradient(circle at -6% -8%, var(--bg-glow-left), transparent 34%),
    radial-gradient(circle at 108% 10%, var(--bg-glow-right), transparent 34%),
    radial-gradient(circle at 50% 120%, rgba(255, 255, 255, 0.08), transparent 32%),
    linear-gradient(180deg, var(--bg-top) 0%, var(--bg) 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 30px 30px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.4), transparent 75%);
}

body::after {
  content: "";
  position: fixed;
  inset: -12vh -10vw;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(circle at 0% 8%, var(--ambient-left), transparent 30%),
    radial-gradient(circle at 100% 18%, var(--ambient-right), transparent 28%);
  filter: blur(34px);
  opacity: 0.8;
}

.page-shell {
  position: relative;
  width: min(calc(100% - 32px), var(--layout));
  margin: 0 auto;
  padding: 36px 0 72px;
  overflow: visible;
}

.ambient {
  position: fixed;
  z-index: -1;
  width: 420px;
  height: 420px;
  border-radius: 999px;
  filter: blur(42px);
  opacity: 0.58;
  pointer-events: none;
}

.ambient-left {
  top: -20px;
  left: -120px;
  background: var(--ambient-left);
}

.ambient-right {
  top: 160px;
  right: -120px;
  background: var(--ambient-right);
}

.hero {
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background: var(--surface);
  border: 1px solid var(--surface-border);
  box-shadow: var(--shadow);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(280px, 0.85fr);
  gap: 22px;
  padding: 26px;
  border-radius: var(--radius-xl);
}

.eyebrow,
.section-kicker,
.notice-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--brand);
}

.hero-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--toggle-border);
  border-radius: 999px;
  background: var(--toggle-surface);
  color: var(--toggle-text);
  cursor: pointer;
  transition: transform 160ms ease, border-color 160ms ease,
    box-shadow 160ms ease, background 160ms ease;
}

.theme-toggle svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.theme-toggle svg path,
.theme-toggle svg circle {
  vector-effect: non-scaling-stroke;
}

.theme-toggle:hover,
.theme-toggle:focus-visible {
  transform: translateY(-1px);
  border-color: var(--entry-hover-border);
  box-shadow: var(--entry-hover-shadow);
}

.hero h1,
.section-head h2 {
  margin: 12px 0 0;
  font-family: var(--font-title);
  line-height: 1.02;
}

.hero h1 {
  max-width: 12ch;
  font-size: clamp(2.6rem, 5vw, 4.9rem);
}
.domain-chip,
.category-chip,
.entry-badge {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 14px;
  border-radius: 999px;
}

.hero-side {
  display: grid;
  gap: 14px;
}

.notice-card {
  padding: 20px;
  border-radius: var(--radius-lg);
  background: var(--hero-glass);
  border: 1px solid var(--hero-glass-border);
}
.notice-card p {
  margin: 12px 0 0;
  color: var(--muted);
  line-height: 1.8;
}

.notice-card code {
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--domain-bg);
  color: var(--domain-text);
  font-family: "SFMono-Regular", "JetBrains Mono", "Cascadia Mono",
    "Source Code Pro", monospace;
  font-size: 0.92em;
}

.content {
  margin-top: 28px;
}

.section-head {
  display: block;
  margin-bottom: 18px;
}

.section-head h2 {
  font-size: clamp(1.9rem, 3vw, 2.8rem);
}

.site-sections {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.site-card {
  display: grid;
  gap: 14px;
  min-height: 100%;
  padding: 20px;
  border-radius: 24px;
  background: var(--surface-strong);
  border: 1px solid rgba(113, 81, 56, 0.1);
  transition: transform 180ms ease, box-shadow 180ms ease,
    border-color 180ms ease;
}

.site-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 36px rgba(70, 43, 25, 0.12);
  border-color: rgba(185, 96, 45, 0.2);
}

.card-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: start;
}

.card-title-wrap {
  min-width: 0;
}

.card-head h3 {
  margin: 0;
  font-size: 1.28rem;
}

.site-description {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
}

.entry-list {
  display: grid;
  gap: 10px;
}

.entry-item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 12px;
  border-radius: 18px;
  background: var(--entry-surface);
  border: 1px solid var(--entry-border);
  text-decoration: none;
  transition: transform 160ms ease, border-color 160ms ease,
    box-shadow 160ms ease;
}

.entry-badge {
  min-height: 30px;
  padding: 0 12px;
  font-size: 0.82rem;
  font-weight: 700;
}

.entry-badge.is-campus {
  background: rgba(185, 96, 45, 0.12);
  color: var(--brand-deep);
}

.entry-badge.is-public {
  background: var(--accent-soft);
  color: #0d5a54;
}

.entry-badge.is-vpn {
  background: rgba(77, 102, 255, 0.14);
  color: #3249b8;
}

.domain-chip {
  min-height: 30px;
  padding: 0 12px;
  background: var(--domain-bg);
  color: var(--domain-text);
  font-size: 0.9rem;
}

.category-chip {
  background: var(--card-chip-bg);
  color: var(--card-chip-text);
  font-size: 0.88rem;
  font-weight: 700;
}

.entry-item:hover,
.entry-item:focus-visible {
  transform: translateY(-1px);
  border-color: var(--entry-hover-border);
  box-shadow: var(--entry-hover-shadow);
}

@media (max-width: 900px) {
  .hero,
  .site-sections {
    grid-template-columns: 1fr;
  }

  .card-head {
    flex-direction: column;
    align-items: stretch;
  }

  .category-chip {
    width: fit-content;
  }
}

@media (max-width: 640px) {
  .page-shell {
    width: min(calc(100% - 20px), var(--layout));
    padding: 16px 0 32px;
  }

  .hero,
  .site-card {
    padding: 18px;
  }

  .hero h1 {
    max-width: none;
    font-size: clamp(2.2rem, 12vw, 3.2rem);
  }

  .hero-top {
    flex-direction: column;
  }

  .hero-copy,
  .hero-side,
  .section-head {
    justify-items: center;
    text-align: center;
  }

  .card-head,
  .site-description,
  .entry-list {
    justify-items: center;
    text-align: center;
  }

  .site-description,
  .notice-card p {
    line-height: 1.7;
  }

  .entry-item {
    align-items: stretch;
    justify-content: center;
    width: 100%;
  }

  .entry-badge,
  .domain-chip,
  .category-chip {
    justify-content: center;
  }

  .ambient {
    width: 280px;
    height: 280px;
    filter: blur(30px);
    opacity: 0.5;
  }

  .ambient-left {
    top: -24px;
    left: -96px;
  }

  .ambient-right {
    top: 200px;
    right: -96px;
  }
}

:root[data-theme="light"] {
  --bg: #f3ede3;
  --bg-top: #faf5ee;
  --bg-glow-left: rgba(228, 157, 88, 0.24);
  --bg-glow-right: rgba(68, 149, 138, 0.2);
  --grid-line: rgba(118, 94, 72, 0.035);
  --surface: rgba(255, 251, 246, 0.82);
  --surface-strong: rgba(255, 249, 242, 0.96);
  --surface-border: rgba(113, 81, 56, 0.14);
  --text: #1f1916;
  --muted: #6b6057;
  --brand: #b9602d;
  --brand-deep: #7b3923;
  --brand-soft: rgba(185, 96, 45, 0.12);
  --accent: #196c65;
  --accent-soft: rgba(25, 108, 101, 0.12);
  --shadow: 0 26px 70px rgba(70, 43, 25, 0.12);
  --hero-glass: rgba(255, 255, 255, 0.52);
  --hero-glass-border: rgba(113, 81, 56, 0.1);
  --toggle-surface: rgba(255, 255, 255, 0.68);
  --toggle-border: rgba(113, 81, 56, 0.14);
  --toggle-text: #5b4c41;
  --card-chip-bg: rgba(25, 108, 101, 0.08);
  --card-chip-text: #155952;
  --entry-surface: rgba(255, 255, 255, 0.58);
  --entry-border: rgba(113, 81, 56, 0.08);
  --entry-hover-border: rgba(185, 96, 45, 0.2);
  --entry-hover-shadow: 0 12px 24px rgba(70, 43, 25, 0.08);
  --domain-bg: rgba(86, 66, 49, 0.08);
  --domain-text: #4e433a;
  --ambient-left: rgba(210, 129, 62, 0.28);
  --ambient-right: rgba(53, 137, 127, 0.22);
}

:root[data-theme="dark"] {
  --bg: #0f1113;
  --bg-top: #181b1f;
  --bg-glow-left: rgba(200, 113, 49, 0.22);
  --bg-glow-right: rgba(56, 130, 121, 0.18);
  --grid-line: rgba(222, 211, 197, 0.05);
  --surface: rgba(24, 28, 31, 0.76);
  --surface-strong: rgba(28, 33, 37, 0.92);
  --surface-border: rgba(214, 197, 180, 0.12);
  --text: #efe6db;
  --muted: #b6a99b;
  --brand: #e59c63;
  --brand-deep: #bc6a3c;
  --brand-soft: rgba(229, 156, 99, 0.16);
  --accent: #63b7ad;
  --accent-soft: rgba(99, 183, 173, 0.16);
  --shadow: 0 26px 70px rgba(0, 0, 0, 0.34);
  --hero-glass: rgba(255, 255, 255, 0.04);
  --hero-glass-border: rgba(214, 197, 180, 0.1);
  --toggle-surface: rgba(255, 255, 255, 0.05);
  --toggle-border: rgba(214, 197, 180, 0.12);
  --toggle-text: #e9dece;
  --card-chip-bg: rgba(99, 183, 173, 0.14);
  --card-chip-text: #9ed9d1;
  --entry-surface: rgba(255, 255, 255, 0.04);
  --entry-border: rgba(214, 197, 180, 0.1);
  --entry-hover-border: rgba(229, 156, 99, 0.28);
  --entry-hover-shadow: 0 14px 28px rgba(0, 0, 0, 0.22);
  --domain-bg: rgba(255, 255, 255, 0.06);
  --domain-text: #ddd0c2;
  --ambient-left: rgba(206, 110, 46, 0.22);
  --ambient-right: rgba(44, 116, 108, 0.22);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0f1113;
    --bg-top: #181b1f;
    --bg-glow-left: rgba(200, 113, 49, 0.22);
    --bg-glow-right: rgba(56, 130, 121, 0.18);
    --grid-line: rgba(222, 211, 197, 0.05);
    --surface: rgba(24, 28, 31, 0.76);
    --surface-strong: rgba(28, 33, 37, 0.92);
    --surface-border: rgba(214, 197, 180, 0.12);
    --text: #efe6db;
    --muted: #b6a99b;
    --brand: #e59c63;
    --brand-deep: #bc6a3c;
    --brand-soft: rgba(229, 156, 99, 0.16);
    --accent: #63b7ad;
    --accent-soft: rgba(99, 183, 173, 0.16);
    --shadow: 0 26px 70px rgba(0, 0, 0, 0.34);
    --hero-glass: rgba(255, 255, 255, 0.04);
    --hero-glass-border: rgba(214, 197, 180, 0.1);
    --toggle-surface: rgba(255, 255, 255, 0.05);
    --toggle-border: rgba(214, 197, 180, 0.12);
    --toggle-text: #e9dece;
    --card-chip-bg: rgba(99, 183, 173, 0.14);
    --card-chip-text: #9ed9d1;
    --entry-surface: rgba(255, 255, 255, 0.04);
    --entry-border: rgba(214, 197, 180, 0.1);
    --entry-hover-border: rgba(229, 156, 99, 0.28);
    --entry-hover-shadow: 0 14px 28px rgba(0, 0, 0, 0.22);
    --domain-bg: rgba(255, 255, 255, 0.06);
    --domain-text: #ddd0c2;
    --ambient-left: rgba(206, 110, 46, 0.22);
    --ambient-right: rgba(44, 116, 108, 0.22);
  }
}