:root {
  --bg: #060606;
  --surface: rgba(255, 255, 255, 0.04);
  --surface-strong: rgba(255, 255, 255, 0.07);
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);
  --text-1: rgba(255, 255, 255, 0.94);
  --text-2: rgba(255, 255, 255, 0.56);
  --text-3: rgba(255, 255, 255, 0.3);
  --shadow: rgba(0, 0, 0, 0.34);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 18px;
  --container: 1120px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --t-fast: 0.28s;
  --t-base: 0.6s;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at top, rgba(255, 255, 255, 0.05), transparent 30%),
    linear-gradient(180deg, #090909 0%, #050505 100%);
  color: var(--text-1);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Helvetica Neue", sans-serif;
  line-height: 1.5;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input {
  font: inherit;
}

button {
  background: none;
  border: 0;
  color: inherit;
  cursor: pointer;
}

input {
  border: 0;
  outline: 0;
}

::selection {
  background: rgba(255, 255, 255, 0.14);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.page-shell {
  position: relative;
  isolation: isolate;
}

.bg-glow {
  position: fixed;
  border-radius: 999px;
  filter: blur(80px);
  pointer-events: none;
  z-index: -1;
}

.bg-glow-a {
  top: 80px;
  left: -120px;
  width: 280px;
  height: 280px;
  background: rgba(110, 136, 255, 0.12);
}

.bg-glow-b {
  top: 420px;
  right: -120px;
  width: 320px;
  height: 320px;
  background: rgba(255, 255, 255, 0.06);
}

.section {
  width: min(calc(100% - 40px), var(--container));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(calc(100% - 24px), calc(var(--container) + 24px));
  margin: 16px auto 0;
  padding: 16px 18px;
  border-radius: 18px;
  border: 1px solid transparent;
  transition: background var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

.site-header.is-scrolled,
.site-header.is-open {
  background: rgba(10, 10, 10, 0.68);
  border-color: var(--border);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
}

.brand {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.26em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-links a {
  font-size: 14px;
  color: var(--text-2);
  transition: color var(--t-fast) var(--ease);
}

.nav-links a:hover {
  color: var(--text-1);
}

.nav-links a[href^="https://map.aojiang.space"] {
  padding: 9px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
}

.nav-links a[href^="https://map.aojiang.space"]:hover {
  border-color: var(--border-strong);
  background: rgba(255, 255, 255, 0.06);
}

.menu-toggle {
  display: none;
  position: relative;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--surface);
}

.menu-toggle span {
  position: absolute;
  left: 11px;
  width: 18px;
  height: 1.5px;
  background: var(--text-1);
  transition: transform var(--t-fast) var(--ease);
}

.menu-toggle span:first-child {
  top: 16px;
}

.menu-toggle span:last-child {
  top: 24px;
}

.menu-toggle.is-open span:first-child {
  transform: translateY(4px) rotate(45deg);
}

.menu-toggle.is-open span:last-child {
  transform: translateY(-4px) rotate(-45deg);
}

.hero {
  padding-top: 120px;
  padding-bottom: 56px;
}

.hero-kicker {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-3);
}

.hero h1 {
  max-width: 8ch;
  margin: 0;
  font-size: clamp(3rem, 7vw, 6rem);
  font-weight: 700;
  line-height: 0.94;
  letter-spacing: -0.06em;
}

.hero-text {
  max-width: 420px;
  margin: 22px 0 0;
  font-size: 17px;
  color: var(--text-2);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 999px;
  transition: transform var(--t-fast) var(--ease), background var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  background: rgba(255, 255, 255, 0.94);
  color: #080808;
}

.button-secondary {
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.02);
}

.toolbar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 16px;
  align-items: center;
  padding: 18px 0 6px;
}

.toolbar-search input {
  width: 100%;
  min-height: 50px;
  padding: 0 18px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  color: var(--text-1);
}

.toolbar-search input::placeholder {
  color: var(--text-3);
}

.toolbar-search input:focus {
  border-color: var(--border-strong);
}

.filter-group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.filter-chip {
  min-height: 42px;
  padding: 0 16px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-2);
  transition: color var(--t-fast) var(--ease), background var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

.filter-chip.is-active {
  background: rgba(255, 255, 255, 0.92);
  color: #080808;
  border-color: rgba(255, 255, 255, 0.92);
}

.section-heading {
  margin: 48px 0 18px;
}

.section-heading p {
  margin: 0;
  font-size: 13px;
  color: var(--text-3);
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.tool-card,
.made-item,
.note-card {
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.02));
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  box-shadow: 0 24px 60px -38px var(--shadow);
}

.tool-card {
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-height: 220px;
  padding: 24px;
  border-radius: var(--radius-xl);
  transition: transform var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

.tool-card:hover,
.made-item:hover {
  transform: translateY(-4px);
  border-color: var(--border-strong);
}

.tool-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.tool-category,
.made-type {
  font-size: 12px;
  color: var(--text-3);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.tool-title,
.made-title {
  margin: 0;
  font-size: 26px;
  font-weight: 600;
  letter-spacing: -0.05em;
  line-height: 1.06;
}

.tool-desc,
.made-desc,
.note-card p {
  margin: 0;
  color: var(--text-2);
  font-size: 15px;
}

.tool-tags,
.made-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
}

.tool-tags span,
.made-tags span {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 12px;
  color: var(--text-2);
}

.tool-link,
.made-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 2px;
  font-size: 14px;
}

.tool-link::after,
.made-link::after {
  content: "↗";
}

.made-list {
  display: grid;
  gap: 12px;
}

.made-item {
  display: grid;
  grid-template-columns: 140px minmax(0, 1fr) auto;
  align-items: center;
  gap: 20px;
  padding: 22px 24px;
  border-radius: var(--radius-lg);
  transition: transform var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

.note-card {
  margin: 48px 0 88px;
  padding: 28px;
  border-radius: var(--radius-lg);
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--t-base) var(--ease), transform var(--t-base) var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 900px) {
  .toolbar,
  .made-item {
    grid-template-columns: 1fr;
  }

  .tool-grid {
    grid-template-columns: 1fr;
  }

  .made-item {
    gap: 10px;
  }
}

@media (max-width: 760px) {
  .section {
    width: min(calc(100% - 24px), var(--container));
  }

  .site-header {
    margin-top: 12px;
    padding: 14px;
  }

  .menu-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-left: auto;
  }

  .nav-links {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    padding: 10px;
    border-radius: 18px;
    background: rgba(10, 10, 10, 0.84);
    border: 1px solid var(--border);
    backdrop-filter: blur(18px) saturate(160%);
    -webkit-backdrop-filter: blur(18px) saturate(160%);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity var(--t-fast) var(--ease), transform var(--t-fast) var(--ease), visibility var(--t-fast) var(--ease);
  }

  .nav-links.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .nav-links a {
    padding: 12px 14px;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.02);
  }

  .hero {
    padding-top: 90px;
    padding-bottom: 34px;
  }

  .hero h1 {
    max-width: none;
    font-size: clamp(2.8rem, 14vw, 4.2rem);
  }

  .hero-text {
    max-width: 320px;
    font-size: 15px;
  }

  .tool-card,
  .made-item,
  .note-card {
    padding: 20px;
    border-radius: 20px;
  }
}

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

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    transition-delay: 0ms !important;
  }
}