/* Growthloud — static marketing system */
:root {
  --bg: #0a0b0d;
  --bg-elevated: #12141a;
  --bg-soft: #181b24;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);
  --text: #f4f5f7;
  --text-muted: #9aa3b5;
  --text-dim: #6b7385;
  --accent: #c8f542;
  --accent-soft: rgba(200, 245, 66, 0.12);
  --accent-ink: #0a0b0d;
  --warm: #ff8a5b;
  --radius: 14px;
  --radius-sm: 10px;
  --max: 1120px;
  --font: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  --display: "Instrument Sans", "Inter", ui-sans-serif, system-ui, sans-serif;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(200, 245, 66, 0.08), transparent 55%),
    radial-gradient(900px 500px at 100% 0%, rgba(255, 138, 91, 0.07), transparent 50%),
    var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--accent);
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--accent);
  color: var(--accent-ink);
  padding: 0.6rem 1rem;
  z-index: 100;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

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

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(10, 11, 13, 0.78);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 64px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  text-decoration: none;
  font-size: 1.05rem;
}

.brand-mark {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: linear-gradient(145deg, var(--accent), #8fd12a 55%, var(--warm));
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.08) inset;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 500;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--text);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.55rem 0.95rem;
  border-radius: 999px;
  background: var(--accent);
  color: var(--accent-ink) !important;
  font-weight: 600;
  text-decoration: none !important;
  font-size: 0.9rem;
}

.nav-cta:hover {
  filter: brightness(1.05);
  color: var(--accent-ink) !important;
}

/* Hero */
.hero {
  padding: 4.5rem 0 3.5rem;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: var(--bg-elevated);
  color: var(--text-muted);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-bottom: 1.25rem;
}

.eyebrow-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
}

h1,
.h1 {
  font-family: var(--display);
  font-size: clamp(2.35rem, 5.2vw, 3.75rem);
  line-height: 1.05;
  letter-spacing: -0.045em;
  font-weight: 700;
  margin: 0 0 1.1rem;
  max-width: 16ch;
}

.lede {
  font-size: clamp(1.05rem, 1.5vw, 1.22rem);
  color: var(--text-muted);
  max-width: 42rem;
  margin: 0 0 1.75rem;
}

.hero-audit {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 1.3rem 0 0.4rem;
  max-width: 34rem;
}
.hero-audit input {
  flex: 1;
  min-width: 220px;
  min-height: 48px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: var(--bg-elevated);
  color: var(--text);
  padding: 0 1.1rem;
  font: inherit;
}
.hero-audit input::placeholder { color: var(--text-dim); }
.hero-audit input:focus {
  outline: 2px solid rgba(200, 245, 66, 0.45);
  outline-offset: 1px;
}
.hero-audit-note {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin: 0 0 1rem;
}
.hero-audit-note a { color: var(--accent); }

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-height: 48px;
  padding: 0.75rem 1.2rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 0.98rem;
  text-decoration: none;
  cursor: pointer;
  font-family: inherit;
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-ink);
}

.btn-primary:hover {
  filter: brightness(1.05);
  color: var(--accent-ink);
}

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

.btn-secondary:hover {
  border-color: rgba(255, 255, 255, 0.28);
  color: var(--text);
}

.definition {
  border: 1px solid var(--border);
  background: linear-gradient(180deg, var(--bg-elevated), var(--bg-soft));
  border-radius: var(--radius);
  padding: 1.15rem 1.25rem;
  max-width: 48rem;
  box-shadow: var(--shadow);
}

.definition strong {
  color: var(--accent);
  font-weight: 700;
}

.definition p {
  margin: 0.35rem 0 0;
  color: var(--text-muted);
}

/* Sections */
section {
  padding: 3.25rem 0;
}

.section-label {
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 0 0 0.75rem;
}

h2 {
  font-family: var(--display);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin: 0 0 0.85rem;
}

.section-intro {
  color: var(--text-muted);
  max-width: 40rem;
  margin: 0 0 1.75rem;
}

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

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

@media (max-width: 860px) {
  .grid-3,
  .grid-2 {
    grid-template-columns: 1fr;
  }

  /* Keep core nav reachable on small screens; allow horizontal scroll */
  .nav {
    flex-wrap: wrap;
    row-gap: 0.5rem;
  }
  .nav-links {
    max-width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    gap: 0.85rem;
    padding-bottom: 0.15rem;
  }
  .nav-links .hide-sm {
    display: list-item;
  }

  h1,
  .h1 {
    max-width: none;
  }
}

.card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.3rem;
  height: 100%;
}

.card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.08rem;
  letter-spacing: -0.02em;
}

.card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.98rem;
}

.card .num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.8rem;
  height: 1.8rem;
  border-radius: 8px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 0.85rem;
}

/* Audience strip */
.audience {
  background: var(--bg-elevated);
  border-block: 1px solid var(--border);
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 1rem;
}

.pill {
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  padding: 0.4rem 0.8rem;
  color: var(--text-muted);
  font-size: 0.9rem;
  background: var(--bg);
}

/* FAQ */
.faq details {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-elevated);
  padding: 0.95rem 1.1rem;
  margin-bottom: 0.65rem;
}

.faq summary {
  cursor: pointer;
  font-weight: 600;
  list-style: none;
}

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

.faq details[open] summary {
  color: var(--accent);
  margin-bottom: 0.55rem;
}

.faq details p {
  margin: 0;
  color: var(--text-muted);
}

/* Page chrome for subpages */
.page-hero {
  padding: 3.5rem 0 1.5rem;
}

.page-hero h1 {
  max-width: 18ch;
}

.prose {
  max-width: 44rem;
  color: var(--text-muted);
}

.prose h2 {
  color: var(--text);
  margin-top: 2rem;
}

.prose p,
.prose li {
  font-size: 1.02rem;
}

.prose ul {
  padding-left: 1.2rem;
}

.prose li {
  margin-bottom: 0.45rem;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0 2.5rem;
  color: var(--text-dim);
  font-size: 0.92rem;
}

.footer-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  align-items: center;
}

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

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

.footer-links a:hover {
  color: var(--accent);
}

/* Focus */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}


/* Pricing */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  align-items: stretch;
}
@media (max-width: 900px) {
  .pricing-grid { grid-template-columns: 1fr; }
}
.price-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem 1.35rem 1.5rem;
  display: flex;
  flex-direction: column;
  position: relative;
}
.price-card.featured {
  border-color: rgba(200, 245, 66, 0.45);
  box-shadow: 0 0 0 1px rgba(200, 245, 66, 0.2), var(--shadow);
  background:
    radial-gradient(400px 180px at 50% 0%, rgba(200, 245, 66, 0.1), transparent 70%),
    var(--bg-elevated);
}
.price-card .badge {
  position: absolute;
  top: -0.65rem;
  left: 1.2rem;
  background: var(--accent);
  color: var(--accent-ink);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.55rem;
  border-radius: 999px;
}
.price-card h3 { margin: 0 0 0.35rem; font-size: 1.2rem; }
.price-card .price {
  font-family: var(--display);
  font-size: 2.4rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  margin: 0.4rem 0 0.15rem;
}
.price-card .price span {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0;
}
.price-card .period { color: var(--text-dim); font-size: 0.9rem; margin: 0 0 1rem; }
.price-card ul {
  list-style: none;
  margin: 0 0 1.25rem;
  padding: 0;
  flex: 1;
}
.price-card li {
  position: relative;
  padding: 0.35rem 0 0.35rem 1.35rem;
  color: var(--text-muted);
  font-size: 0.95rem;
}
.price-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7rem;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--accent);
}
.price-card .btn { width: 100%; }
.compare-wrap { overflow-x: auto; margin: 1.5rem 0; }
.compare {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}
.compare th, .compare td {
  border: 1px solid var(--border);
  padding: 0.75rem 0.9rem;
  text-align: left;
  vertical-align: top;
}
.compare th {
  background: var(--bg-elevated);
  color: var(--text);
  font-weight: 600;
}
.compare td { color: var(--text-muted); }
.compare tr:nth-child(even) td { background: rgba(255,255,255,0.02); }
.post-list { display: grid; gap: 1rem; }
.post-card {
  display: block;
  text-decoration: none;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.35rem;
  transition: border-color 0.15s ease;
}
.post-card:hover { border-color: var(--border-strong); color: inherit; }
.post-card .meta {
  color: var(--text-dim);
  font-size: 0.85rem;
  margin: 0 0 0.45rem;
}
.post-card h3 {
  margin: 0 0 0.45rem;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  color: var(--text);
}
.post-card p { margin: 0; color: var(--text-muted); }
.cta-panel {
  border-radius: calc(var(--radius) + 4px);
  border: 1px solid var(--border-strong);
  background:
    radial-gradient(600px 240px at 20% 0%, rgba(200, 245, 66, 0.12), transparent 60%),
    var(--bg-elevated);
  padding: clamp(1.4rem, 3vw, 2.2rem);
}
.cta-panel form {
  display: grid;
  gap: 0.65rem;
  margin-top: 1.1rem;
  max-width: 36rem;
}
.cta-panel input[type="email"],
.cta-panel input[type="text"],
.cta-panel select {
  min-height: 48px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: var(--bg);
  color: var(--text);
  padding: 0 1.1rem;
  font: inherit;
}
.cta-panel select { border-radius: 12px; }
.cta-panel input::placeholder { color: var(--text-dim); }
.cta-panel input:focus, .cta-panel select:focus {
  outline: 2px solid rgba(200, 245, 66, 0.45);
  outline-offset: 1px;
}
.prose a { color: var(--accent); }
/* Buttons inside prose must not inherit link accent (green-on-green) */
.prose a.btn {
  text-decoration: none;
}
.prose a.btn-primary,
.prose a.btn-primary:hover {
  color: var(--accent-ink);
}
.prose a.btn-secondary,
.prose a.btn-secondary:hover {
  color: var(--text);
}
.prose strong { color: var(--text); }
.prose h3 { color: var(--text); margin-top: 1.5rem; }

/* Landing-page content column (aligned with hero container edges) */
.page-stack {
  padding-bottom: 4rem;
}
.page-stack > .container > .section-block {
  margin-bottom: 3rem;
}
.page-stack .section-block:last-child {
  margin-bottom: 0;
}
.channel-cluster {
  margin-bottom: 2.5rem;
  padding-bottom: 0.25rem;
}
.channel-cluster h3 {
  margin: 0 0 0.9rem;
  font-size: 1.12rem;
  letter-spacing: -0.02em;
  color: var(--text);
}
.channel-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
@media (max-width: 900px) {
  .channel-grid {
    grid-template-columns: 1fr;
  }
}
.channel-chip {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  min-height: 6.5rem;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  text-decoration: none;
  color: var(--text);
  font-size: 1rem;
  font-weight: 600;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.channel-chip:hover {
  border-color: var(--border-strong);
  color: var(--accent);
}
.channel-chip span {
  display: block;
  margin-top: 0.45rem;
  font-weight: 400;
  font-size: 0.88rem;
  line-height: 1.45;
  color: var(--text-dim);
}
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.85rem;
  counter-reset: step;
}
@media (max-width: 900px) {
  .steps {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 560px) {
  .steps {
    grid-template-columns: 1fr;
  }
}
.step-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.15rem;
}
.step-card::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.8rem;
  height: 1.8rem;
  border-radius: 8px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: 0.7rem;
}
.step-card h3 {
  margin: 0 0 0.4rem;
  font-size: 1rem;
}
.step-card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.92rem;
}
.include-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.include-list li {
  position: relative;
  padding: 0.4rem 0 0.4rem 1.35rem;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
}
.include-list li:last-child {
  border-bottom: 0;
}
.include-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.75rem;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--accent);
}
/* Align page-hero lede with body container (no sudden prose squeeze) */
.page-hero .lede {
  max-width: 40rem;
}
.page-hero h1 {
  max-width: min(18ch, 100%);
}
html[lang="zh-CN"] .page-hero h1 {
  max-width: min(14em, 100%);
}
.meta-row { color: var(--text-dim); font-size: 0.9rem; margin: 0 0 1.25rem; }
.check { color: var(--accent); }

/* Language switcher */
.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.88rem;
  font-weight: 600;
}
.lang-switch a {
  text-decoration: none;
  color: var(--text-dim);
  padding: 0.2rem 0.15rem;
}
.lang-switch a[aria-current="true"] {
  color: var(--accent);
}
.lang-switch a:hover {
  color: var(--text);
}
.lang-sep {
  color: var(--text-dim);
  opacity: 0.5;
}

/* Chinese typography */
html[lang="zh-CN"] body {
  font-family: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    "Inter", ui-sans-serif, system-ui, sans-serif;
}
html[lang="zh-CN"] h1,
html[lang="zh-CN"] h2,
html[lang="zh-CN"] h3,
html[lang="zh-CN"] .brand,
html[lang="zh-CN"] .price {
  font-family: "Instrument Sans", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", sans-serif;
  letter-spacing: -0.02em;
}
html[lang="zh-CN"] h1 {
  max-width: 14em;
}
html[lang="zh-CN"] .lede,
html[lang="zh-CN"] .section-intro,
html[lang="zh-CN"] .prose {
  line-height: 1.75;
}


/* Honeypot — must stay off-screen (bots fill it; humans must not see it) */
.hp {
  position: absolute !important;
  left: -10000px !important;
  width: 1px !important;
  height: 1px !important;
  overflow: hidden !important;
  opacity: 0 !important;
  pointer-events: none !important;
}