/* AiChillFun marketing site — paper / navy / orange */
:root {
  --bg: #fff4ea;
  --bg-elevated: #ffffff;
  --bg-soft: #ffe8d4;
  --border: rgba(19, 32, 58, 0.1);
  --text: #13203a;
  --muted: #5d6b80;
  --accent: #f05a1a;
  --accent-2: #13203a;
  --accent-3: #f3b42a;
  --ok: #1b8a72;
  --warn: #f3b42a;
  --shadow: 0 16px 40px rgba(19, 32, 58, 0.08);
  --radius: 20px;
  --radius-sm: 12px;
  --max: 1120px;
  --font: "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    system-ui, -apple-system, sans-serif;
  --mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --header-h: 64px;
  --focus: 0 0 0 3px rgba(240, 90, 26, 0.35);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(900px 420px at 92% -10%, rgba(240, 90, 26, 0.16), transparent 55%),
    radial-gradient(700px 380px at 0% 0%, rgba(243, 180, 42, 0.12), transparent 50%),
    var(--bg);
  line-height: 1.65;
  min-height: 100vh;
}

a {
  color: var(--accent-2);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

:focus-visible {
  outline: none;
  box-shadow: var(--focus);
  border-radius: 6px;
}

.btn:focus-visible,
.nav-toggle:focus-visible,
.brand:focus-visible {
  border-radius: 999px;
}

img,
svg {
  display: block;
  max-width: 100%;
}

.container {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: #13203a;
  border-bottom: 0;
}

.site-header.is-scrolled {
  box-shadow: 0 8px 28px rgba(2, 8, 23, 0.28);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 0;
  min-height: var(--header-h);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.02em;
  z-index: 2;
}

.brand:hover {
  text-decoration: none;
}

.brand img,
.brand svg {
  width: 36px;
  height: 36px;
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,.18);
  background: transparent;
  color: #fff;
  cursor: pointer;
  padding: 0;
  z-index: 2;
}

.nav-toggle-bars {
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  position: relative;
  transition: background 0.15s ease;
}

.nav-toggle-bars::before,
.nav-toggle-bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: transform 0.2s ease, top 0.2s ease;
}

.nav-toggle-bars::before { top: -6px; }
.nav-toggle-bars::after { top: 6px; }

.nav-toggle[aria-expanded="true"] .nav-toggle-bars {
  background: transparent;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before {
  top: 0;
  transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after {
  top: 0;
  transform: rotate(-45deg);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.35rem 1.1rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav-links a {
  color: #c5d0de;
  font-size: 0.95rem;
  text-decoration: none;
  padding: 0.35rem 0.2rem;
}

.nav-links a:hover,
.nav-links a.active {
  color: #fff;
}

.nav-links a.active {
  position: relative;
}

.nav-links a.active:not(.btn)::after {
  content: "";
  position: absolute;
  left: 0.2rem;
  right: 0.2rem;
  bottom: 0;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}

.nav-links .btn {
  margin-left: 0.35rem;
}

/* Status strip */
.status-strip {
  display: none;
}

.status-strip .container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.55rem 1.15rem;
  padding: 0.45rem 0;
  color: var(--muted);
}

.status-strip a {
  color: var(--muted);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.status-strip a:hover {
  color: var(--text);
  text-decoration: none;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 0 3px rgba(52, 211, 153, 0.18);
  flex-shrink: 0;
}

.status-strip .sep {
  opacity: 0.35;
  user-select: none;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  border-radius: 999px;
  padding: 0.7rem 1.25rem;
  font-weight: 600;
  border: 1px solid transparent;
  text-decoration: none !important;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
  cursor: pointer;
}

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

.btn-primary {
  color: #fff;
  background: var(--accent);
  box-shadow: 0 10px 24px rgba(240, 90, 26, 0.28);
}

.btn-primary:hover {
  box-shadow: 0 14px 28px rgba(240, 90, 26, 0.36);
}

.btn-ghost {
  color: var(--text);
  background: transparent;
  border-color: var(--border);
}

.btn-ghost:hover {
  border-color: color-mix(in srgb, var(--accent-2) 45%, var(--border));
  background: color-mix(in srgb, var(--bg-soft) 70%, transparent);
}

.btn-sm {
  padding: 0.45rem 0.95rem;
  font-size: 0.9rem;
}

/* Hero */
.hero {
  padding: 4.5rem 0 3.2rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.95fr;
  gap: 2rem;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.28rem 0.75rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg-elevated) 80%, transparent);
  color: var(--muted);
  font-size: 0.85rem;
  margin-bottom: 1rem;
}

.eyebrow .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 0 4px rgba(52, 211, 153, 0.18);
}

.hero h1 {
  margin: 0 0 1rem;
  font-size: clamp(2rem, 4.4vw, 3.15rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.hero h1 span {
  color: var(--accent);
}

.lead {
  margin: 0 0 1.6rem;
  color: var(--muted);
  font-size: 1.08rem;
  max-width: 38rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem 1.4rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.hero-card {
  background: linear-gradient(180deg, color-mix(in srgb, var(--bg-elevated) 92%, white 4%), var(--bg-elevated));
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 4px);
  box-shadow: var(--shadow);
  padding: 1.25rem;
  overflow: hidden;
}

.hero-card .card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.9rem;
  color: var(--muted);
  font-size: 0.85rem;
}

.pills {
  display: flex;
  gap: 0.35rem;
}

.pill {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #475569;
}

.pill.r { background: #fb7185; }
.pill.y { background: #fbbf24; }
.pill.g { background: #34d399; }

.code-block {
  margin: 0;
  padding: 1rem 1.05rem;
  border-radius: var(--radius-sm);
  background: #020617;
  color: #cbd5e1;
  font-family: var(--mono);
  font-size: 0.82rem;
  line-height: 1.7;
  overflow-x: auto;
  border: 1px solid rgba(148, 163, 184, 0.12);
}

.code-block .k { color: #7dd3fc; }
.code-block .s { color: #86efac; }
.code-block .c { color: #64748b; }

/* Sections */
section {
  padding: 3.2rem 0;
}

.section-head {
  margin-bottom: 1.8rem;
}

.section-head h2 {
  margin: 0 0 0.55rem;
  font-size: clamp(1.55rem, 2.8vw, 2rem);
  letter-spacing: -0.01em;
}

.section-head p {
  margin: 0;
  color: var(--muted);
  max-width: 40rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.grid-5 {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
}

.card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.3rem;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.02) inset;
}

.card h3 {
  margin: 0 0 0.55rem;
  font-size: 1.05rem;
}

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

.feature-icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  margin-bottom: 0.9rem;
  background: linear-gradient(145deg, rgba(94, 234, 212, 0.18), rgba(129, 140, 248, 0.16));
  color: var(--accent);
  font-weight: 700;
  font-size: 0.95rem;
}

/* Pricing cards */
.price-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  min-height: 100%;
}

.price-card.featured {
  border-color: var(--accent);
  background: var(--bg-elevated);
  box-shadow: 0 18px 40px rgba(240, 90, 26, 0.12);
}

.badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  font-size: 0.75rem;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  border: 0;
}

.price-card .tier {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0;
}

.price-card .rate {
  margin: 0;
  font-size: 2rem;
  font-weight: 750;
  letter-spacing: -0.03em;
}

.price-card .rate small {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--muted);
}

.price-card ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--muted);
  flex: 1;
}

.price-card li + li {
  margin-top: 0.35rem;
}

.disclaimer {
  margin-top: 1.25rem;
  padding: 0.95rem 1.1rem;
  border-radius: var(--radius-sm);
  border: 1px dashed var(--border);
  background: var(--bg-soft);
  color: var(--muted);
  font-size: 0.92rem;
}

/* FAQ accordion */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-width: 48rem;
}

.faq-item {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 1rem 1.15rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  user-select: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  flex-shrink: 0;
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 8px;
  display: grid;
  place-items: center;
  font-size: 1.1rem;
  line-height: 1;
  color: var(--accent-2);
  background: color-mix(in srgb, var(--bg-soft) 80%, transparent);
  border: 1px solid var(--border);
  transition: transform 0.15s ease;
}

.faq-item[open] summary::after {
  content: "−";
}

.faq-item summary:hover {
  background: color-mix(in srgb, var(--bg-soft) 40%, transparent);
}

.faq-item summary:focus-visible {
  box-shadow: var(--focus);
  border-radius: 0;
}

.faq-body {
  padding: 0 1.15rem 1.1rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.faq-body p {
  margin: 0;
}

.faq-body p + p {
  margin-top: 0.55rem;
}

/* Docs */
.docs-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 1.5rem;
  align-items: start;
}

.docs-toc {
  position: sticky;
  top: 5rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
}

.docs-toc h3 {
  margin: 0 0 0.7rem;
  font-size: 0.95rem;
}

.docs-toc a {
  display: block;
  color: var(--muted);
  padding: 0.35rem 0;
  text-decoration: none;
  font-size: 0.92rem;
}

.docs-toc a:hover {
  color: var(--text);
}

.docs-main .card + .card {
  margin-top: 1rem;
}

.docs-main h2 {
  margin: 0 0 0.7rem;
  font-size: 1.25rem;
}

.docs-main p,
.docs-main li {
  color: var(--muted);
}

.inline-code {
  font-family: var(--mono);
  font-size: 0.88em;
  padding: 0.12rem 0.4rem;
  border-radius: 6px;
  background: color-mix(in srgb, var(--bg-soft) 80%, #000 8%);
  border: 1px solid var(--border);
  color: var(--text);
}

/* Domain table */
.domain-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 0.75rem;
  font-size: 0.92rem;
}

.domain-table th,
.domain-table td {
  text-align: left;
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--border);
  vertical-align: top;
}

.domain-table th {
  background: var(--bg-soft);
  color: var(--text);
  font-weight: 600;
}

.domain-table td {
  color: var(--muted);
}

.domain-table code {
  font-family: var(--mono);
  font-size: 0.88em;
  color: var(--text);
}

.note-box {
  margin-top: 0.9rem;
  padding: 0.75rem 0.95rem;
  border-radius: var(--radius-sm);
  border: 1px solid color-mix(in srgb, var(--accent-2) 28%, var(--border));
  background: color-mix(in srgb, rgba(56, 189, 248, 0.08) 70%, var(--bg-soft));
  color: var(--muted);
  font-size: 0.9rem;
}

/* Status page */
.status-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-width: 40rem;
}

.status-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding: 1rem 1.15rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.status-row .label {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.status-row .label strong {
  font-weight: 600;
}

.status-row .label span {
  color: var(--muted);
  font-size: 0.88rem;
  font-family: var(--mono);
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  background: rgba(52, 211, 153, 0.14);
  color: var(--ok);
  border: 1px solid rgba(52, 211, 153, 0.28);
}

.legal-prose {
  max-width: 44rem;
}

.legal-prose .card h2 {
  margin: 0 0 0.7rem;
  font-size: 1.15rem;
}

.legal-prose .card + .card {
  margin-top: 1rem;
}

.legal-prose ul {
  margin: 0.5rem 0 0;
  padding-left: 1.2rem;
  color: var(--muted);
}

.legal-prose li + li {
  margin-top: 0.35rem;
}

/* CTA band */
.cta-band {
  margin: 1rem 0 3.5rem;
  padding: 2rem;
  border-radius: calc(var(--radius) + 6px);
  border: 1px solid var(--border);
  background: var(--accent-2);
  color: #fff;
  border-color: transparent;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.cta-band h2 {
  margin: 0 0 0.35rem;
  font-size: 1.45rem;
  color: #fff;
}

.cta-band p {
  margin: 0;
  color: #c5d0de;
}

/* Footer */
.site-footer {
  border-top: 0;
  padding: 2.6rem 0 1.8rem;
  color: #9eabbd;
  font-size: 0.9rem;
  background: #13203a;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: 1.5rem 1.25rem;
  margin-bottom: 1.8rem;
}

.footer-brand .brand {
  margin-bottom: 0.7rem;
}

.footer-brand p {
  margin: 0;
  max-width: 18rem;
  line-height: 1.55;
}

.footer-col h3 {
  margin: 0 0 0.7rem;
  font-size: 0.92rem;
  color: #fff;
  font-weight: 650;
}

.footer-col a {
  display: block;
  color: #9eabbd;
  text-decoration: none;
  padding: 0.28rem 0;
}

.footer-col a:hover {
  color: #fff;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.6rem 1rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
}

.footer-bottom a {
  color: var(--muted);
  text-decoration: none;
}

.footer-bottom a:hover {
  color: var(--text);
}

.footer-links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Page title for secondary pages */
.page-hero {
  padding: 3rem 0 1.2rem;
}

.page-hero h1 {
  margin: 0 0 0.6rem;
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
}

.page-hero p {
  margin: 0;
  color: var(--muted);
  max-width: 42rem;
}

@media (max-width: 960px) {
  .hero-grid,
  .docs-layout,
  .grid-5,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .grid-3 {
    grid-template-columns: 1fr;
  }

  .docs-toc {
    position: static;
  }

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

@media (max-width: 720px) {
  .nav-toggle {
    display: inline-flex;
  }

  .nav-links {
    display: none;
    position: absolute;
    left: 1rem;
    right: 1rem;
    top: calc(var(--header-h) + 0.35rem);
    flex-direction: column;
    align-items: stretch;
    gap: 0.15rem;
    padding: 0.75rem;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
  }

  .nav-links.is-open {
    display: flex;
  }

  .nav-links a {
    padding: 0.65rem 0.75rem;
    border-radius: 10px;
  }

  .nav-links a.active:not(.btn)::after {
    display: none;
  }

  .nav-links a.active:not(.btn) {
    background: color-mix(in srgb, var(--bg-soft) 80%, transparent);
  }

  .nav-links .btn {
    margin: 0.35rem 0 0;
    width: 100%;
  }

  .site-header .container.nav {
    position: relative;
  }

  .status-strip .sep {
    display: none;
  }
}

@media (max-width: 640px) {
  .hero {
    padding-top: 2.8rem;
  }

  .cta-band {
    padding: 1.4rem;
  }

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

  .domain-table {
    display: block;
    overflow-x: auto;
  }
}

.price-card .tier-art {
  width: 100%;
  height: auto;
  border-radius: 16px;
  margin-bottom: 1rem;
  display: block;
}