:root {
  color-scheme: light dark;
  --bg: #f7f7f8;
  --bg-soft: #eef0f4;
  --card: #ffffff;
  --text: #111827;
  --muted: #6b7280;
  --border: #e5e7eb;
  --link: #2563eb;
  --accent: #eef2ff;
  --accent-strong: #4f46e5;
  --shadow: 0 12px 40px rgba(15, 23, 42, 0.08);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0d12;
    --bg-soft: #12151d;
    --card: #151922;
    --text: #f3f4f6;
    --muted: #9ca3af;
    --border: #2a3140;
    --link: #60a5fa;
    --accent: #1e293b;
    --accent-strong: #818cf8;
    --shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

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

a:hover {
  text-decoration: underline;
}

.site-header {
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--card) 88%, var(--bg));
}

.site-header-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 20px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.site-header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.site-tagline {
  color: var(--muted);
  font-size: 0.92rem;
}

.site-nav-wrap {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 16px;
}

.site-nav-wrap:first-of-type {
  padding-top: 4px;
}

.site-nav-wrap-secondary {
  padding-top: 10px;
  padding-bottom: 4px;
}

.site-nav-wrap-filter {
  position: sticky;
  top: 0;
  z-index: 20;
  padding-top: 8px;
  padding-bottom: 8px;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(8px);
}

.theme-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  max-width: 920px;
}

.theme-filter-chip {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition:
    color 0.15s ease,
    background 0.15s ease,
    border-color 0.15s ease;
}

.theme-filter-chip:hover {
  color: var(--text);
  border-color: color-mix(in srgb, var(--text) 28%, var(--border));
}

.theme-filter-chip.is-on {
  background: var(--card);
  border-color: color-mix(in srgb, var(--link) 45%, var(--border));
  color: var(--text);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--link) 18%, transparent);
}

.theme-filter-chip:focus-visible {
  outline: 2px solid var(--link);
  outline-offset: 2px;
}

/* Niche navigation — underline tabs */
.niche-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 2px;
  border-bottom: 1px solid var(--border);
}

.niche-tab {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 14px 2px;
  margin-bottom: -1px;
  border: 0;
  border-bottom: 2px solid transparent;
  border-radius: 0;
  background: transparent;
  color: var(--muted);
  font-size: 0.94rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  transition:
    color 0.15s ease,
    border-color 0.15s ease,
    background 0.15s ease;
}

.niche-tab:hover {
  text-decoration: none;
  color: var(--text);
  background: color-mix(in srgb, var(--bg-soft) 70%, transparent);
}

.niche-tab.is-active {
  color: var(--accent-strong);
  border-bottom-color: var(--accent-strong);
  background: transparent;
}

.niche-tab-home {
  color: var(--muted);
  font-weight: 500;
}

.niche-tab-home.is-active {
  font-weight: 600;
}

/* Period navigation — compact segmented control */
.period-nav {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 2px;
  padding: 3px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-soft);
}

.period-link {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 16px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  text-transform: uppercase;
  transition:
    color 0.15s ease,
    background 0.15s ease,
    box-shadow 0.15s ease;
}

.period-link:hover {
  text-decoration: none;
  color: var(--text);
}

.period-link.is-active {
  background: var(--card);
  color: var(--text);
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.08);
}

@media (prefers-color-scheme: dark) {
  .period-link.is-active {
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.35);
  }
}

.hub-main {
  max-width: 1180px;
  margin: 0 auto;
  padding: 28px 16px 48px;
}

.hub-intro h1 {
  margin: 0 0 8px;
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  letter-spacing: -0.03em;
}

.hub-lead {
  margin: 0 0 24px;
  color: var(--muted);
  max-width: 42rem;
}

.hub-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.hub-loading,
.hub-error {
  color: var(--muted);
}

.hub-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 20px 18px;
  box-shadow: var(--shadow);
}

.hub-card-head h2 {
  margin: 0 0 6px;
  font-size: 1.15rem;
}

.hub-updated {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.hub-card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 16px 0;
}

.hub-apps-title {
  margin-bottom: 8px;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}

.hub-apps ul {
  margin: 0;
  padding-left: 1.1rem;
}

.hub-apps li {
  margin-bottom: 6px;
  font-size: 0.94rem;
}

.hub-more {
  color: var(--muted);
}

.niche-anchor-nav {
  margin-bottom: 16px;
}

.niche-anchor-links,
.anchor-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.niche-anchor-links a,
.anchor-links a {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg-soft);
  color: var(--text);
  font-size: 0.88rem;
  font-weight: 600;
  max-width: 100%;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.niche-anchor-links a:hover,
.anchor-links a:hover {
  text-decoration: none;
  background: var(--card);
}

.section[id],
.hub-card[id] {
  scroll-margin-top: 96px;
}

.report-layout {
  max-width: 860px;
  margin: 0 auto;
  padding: 20px 16px 48px;
}

.report-sidebar {
  position: sticky;
  top: 16px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px 14px;
  max-height: calc(100vh - 32px);
  overflow: auto;
}

.sidebar-title {
  margin-bottom: 10px;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}

.sidebar-muted {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.app-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.app-link {
  display: block;
  padding: 8px 10px;
  border-radius: 10px;
  color: var(--text);
  font-size: 0.92rem;
  line-height: 1.35;
}

.app-link:hover {
  text-decoration: none;
  background: var(--bg-soft);
}

.app-link.is-active {
  background: var(--accent);
  color: var(--accent-strong);
  font-weight: 600;
}

.app-rank {
  color: var(--muted);
}

.report-main {
  min-width: 0;
}

.report-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px 22px;
  box-shadow: var(--shadow);
}

@media (max-width: 900px) {
  .report-layout {
    padding: 16px 12px 40px;
  }
}

@media (max-width: 640px) {
  .site-tagline {
    display: none;
  }

  .hub-card-actions {
    flex-direction: column;
  }

  .hub-card-actions .button {
    width: 100%;
  }
}

.logo {
  font-weight: 800;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
  color: var(--text);
}

.logo span {
  color: var(--accent-strong);
}

.lang-switch {
  display: flex;
  flex-wrap: nowrap;
  gap: 2px;
  padding: 3px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 999px;
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.lang-switch::-webkit-scrollbar {
  display: none;
}

.lang-switch button,
.lang-switch .lang-switch-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  border: 0;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 5px 8px;
  border-radius: 999px;
  cursor: pointer;
  text-decoration: none;
  min-width: 2.1rem;
}

.lang-switch button[aria-pressed="true"],
.lang-switch .lang-switch-link[aria-current="page"] {
  background: var(--card);
  color: var(--text);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.08);
}

main {
  max-width: 980px;
  margin: 0 auto;
  padding: 32px 16px 64px;
}

.hero {
  background:
    radial-gradient(circle at top right, rgba(79, 70, 229, 0.12), transparent 42%),
    var(--card);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 40px 28px;
  box-shadow: var(--shadow);
}

.badge {
  display: inline-block;
  margin-bottom: 16px;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--accent-strong);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0 0 12px;
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.hero .lead {
  margin: 0 0 28px;
  max-width: 42rem;
  color: var(--muted);
  font-size: 1.08rem;
}

.feedback-page .feedback-main {
  max-width: 40rem;
  margin: 0 auto;
  padding: 32px 16px 64px;
}

.feedback-intro {
  margin-bottom: 28px;
}

.feedback-intro h1 {
  margin: 10px 0 12px;
  font-size: clamp(1.6rem, 3vw, 2rem);
  letter-spacing: -0.02em;
}

.feedback-intro .lead {
  margin: 0;
  color: var(--muted);
  font-size: 1.02rem;
}

.feedback-form {
  display: grid;
  gap: 22px;
}

.feedback-q {
  margin: 0;
  padding: 0;
  border: 0;
  min-inline-size: 0;
}

.feedback-q legend {
  padding: 0;
  margin: 0 0 12px;
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--text);
}

.feedback-options {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.feedback-chip {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 600;
  cursor: pointer;
  transition:
    color 0.15s ease,
    background 0.15s ease,
    border-color 0.15s ease;
}

.feedback-chip input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.feedback-chip:hover {
  color: var(--text);
  border-color: color-mix(in srgb, var(--text) 28%, var(--border));
}

.feedback-chip.is-on {
  background: var(--card);
  border-color: color-mix(in srgb, var(--link) 45%, var(--border));
  color: var(--text);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--link) 18%, transparent);
}

.feedback-scale-hint {
  display: flex;
  justify-content: space-between;
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 0.78rem;
}

.feedback-comment {
  display: grid;
  gap: 6px;
  margin-top: 12px;
  font-size: 0.88rem;
  color: var(--muted);
}

.feedback-comment textarea,
.feedback-comment input[type="email"] {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--card);
  color: var(--text);
  font: inherit;
  resize: vertical;
}

.feedback-comment-primary {
  margin-top: 0;
}

.feedback-actions {
  display: grid;
  gap: 10px;
  justify-items: start;
}

.feedback-status {
  margin: 0;
  min-height: 1.2em;
  color: var(--muted);
  font-size: 0.9rem;
}

.feedback-status.is-error {
  color: #b91c1c;
}

@media (prefers-color-scheme: dark) {
  .feedback-status.is-error {
    color: #f87171;
  }
}

.feedback-note {
  margin: 0;
  color: var(--muted);
  font-size: 0.85rem;
}

.feedback-done {
  padding: 24px 0;
}

.feedback-done h2 {
  margin: 0 0 10px;
}

.feedback-done p {
  margin: 0 0 20px;
  color: var(--muted);
}

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

.email-subscribe {
  position: relative;
  max-width: 28rem;
}

.email-subscribe-form {
  display: grid;
  gap: 14px;
}

.email-field {
  display: grid;
  gap: 6px;
  font-size: 0.92rem;
  color: var(--muted);
}

.email-field input,
.email-field select {
  min-height: 44px;
  padding: 0 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--card);
  color: var(--text);
  font: inherit;
}

.email-honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.email-status {
  margin: 0;
  min-height: 1.4em;
  font-size: 0.92rem;
  color: var(--muted);
}

.email-status.is-success {
  color: #15803d;
}

.email-status.is-error {
  color: #b91c1c;
}

.email-note,
.email-unavailable {
  margin: 8px 0 0;
  font-size: 0.88rem;
  color: var(--muted);
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 18px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 12px;
  font-weight: 700;
  border: 1px solid transparent;
}

.button-primary {
  background: var(--accent-strong);
  color: #fff;
}

.button-primary:hover {
  text-decoration: none;
  filter: brightness(1.05);
}

.button-secondary {
  background: var(--card);
  color: var(--text);
  border-color: var(--border);
}

.button-secondary:hover {
  text-decoration: none;
  background: var(--bg-soft);
}

.hero-note {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.section {
  margin-top: 48px;
}

.section h2 {
  margin: 0 0 10px;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
}

.section-intro {
  margin: 0 0 20px;
  color: var(--muted);
  max-width: 40rem;
}

.feature-grid,
.niche-grid {
  display: grid;
  gap: 16px;
}

.feature-grid {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.feature-card,
.niche-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px 18px;
}

.feature-card h3,
.niche-card h3 {
  margin: 0 0 8px;
  font-size: 1rem;
}

.feature-card p,
.niche-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.niche-grid {
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.niche-card a {
  font-weight: 600;
}

.steps {
  margin: 0;
  padding-left: 1.2rem;
}

.steps li {
  margin-bottom: 10px;
}

.site-footer {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 16px 32px;
  color: var(--muted);
  font-size: 0.9rem;
}

.site-footer p {
  margin: 0;
}

.back-to-top {
  position: fixed;
  right: 20px;
  bottom: 24px;
  z-index: 30;
  width: 48px;
  height: 48px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 14px;
  background: transparent;
  box-shadow: var(--shadow);
  font: inherit;
  cursor: pointer;
  opacity: 0;
  transform: translateY(10px) scale(0.96);
  pointer-events: none;
  transition:
    opacity 0.22s ease,
    transform 0.22s ease,
    box-shadow 0.22s ease;
}

.back-to-top.is-visible {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

.back-to-top:hover {
  box-shadow: 0 14px 34px rgba(15, 23, 42, 0.12);
  transform: translateY(-2px) scale(1.04);
}

.back-to-top:active {
  transform: translateY(0) scale(0.98);
}

.back-to-top-icon {
  width: 48px;
  height: 48px;
  display: block;
}

.back-to-top-bg {
  fill: var(--card);
  stroke: var(--border);
  stroke-width: 1;
}

.back-to-top-arrow {
  stroke: var(--muted);
}

.back-to-top:hover .back-to-top-arrow {
  stroke: var(--text);
}

.back-to-top:hover .back-to-top-bg {
  fill: var(--bg-soft);
}

.back-to-top[hidden] {
  display: none;
}

@media (prefers-color-scheme: dark) {
  .back-to-top:hover {
    box-shadow: 0 16px 36px rgba(0, 0, 0, 0.38);
  }
}

@media (max-width: 640px) {
  .hero {
    padding: 28px 20px;
  }

  .cta-row {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }
}