:root {
  color-scheme: light;
  --bg: #f6f7fb;
  --surface: #ffffff;
  --surface-soft: #f0f4ff;
  --ink: #172033;
  --muted: #647084;
  --line: #dfe5ef;
  --brand: #4257ff;
  --brand-dark: #2535bf;
  --brand-soft: #eef1ff;
  --accent: #06b6a9;
  --warning: #f59e0b;
  --radius: 22px;
  --shadow: 0 18px 48px rgba(22, 32, 51, .10);
  --shadow-soft: 0 10px 24px rgba(22, 32, 51, .07);
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top left, rgba(66, 87, 255, .16), transparent 34rem), var(--bg);
  color: var(--ink);
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
a:hover { color: var(--brand); }
img, svg { max-width: 100%; height: auto; }
button, input, select, textarea { font: inherit; }
.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  padding: .75rem 1rem;
  background: var(--ink);
  color: #fff;
  border-radius: 999px;
  z-index: 50;
}
.skip-link:focus { top: 1rem; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(246, 247, 251, .86);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(223, 229, 239, .84);
}
.nav {
  max-width: var(--max);
  margin: 0 auto;
  padding: .95rem 1.2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  font-weight: 850;
  letter-spacing: -.03em;
}
.logo-mark {
  display: grid;
  place-items: center;
  width: 2.15rem;
  height: 2.15rem;
  border-radius: 13px;
  background: linear-gradient(135deg, var(--brand), var(--accent));
  color: white;
  box-shadow: 0 8px 20px rgba(66, 87, 255, .24);
}
.nav-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: .25rem;
}
.nav-links a {
  color: var(--muted);
  font-weight: 700;
  font-size: .93rem;
  padding: .55rem .72rem;
  border-radius: 999px;
}
.nav-links a:hover, .nav-links a[aria-current="page"] { background: var(--surface); color: var(--ink); box-shadow: var(--shadow-soft); }
.wrapper { max-width: var(--max); margin: 0 auto; padding: 0 1.2rem; }
.hero {
  padding: 4.6rem 0 2rem;
}
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 460px);
  gap: 2rem;
  align-items: center;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  padding: .38rem .7rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, .75);
  color: var(--muted);
  font-weight: 800;
  font-size: .86rem;
}
h1, h2, h3 { line-height: 1.08; letter-spacing: -.045em; }
h1 { font-size: clamp(2.45rem, 6vw, 5.6rem); margin: 1rem 0 .9rem; max-width: 850px; }
h2 { font-size: clamp(2rem, 4vw, 3.4rem); margin: 0 0 1rem; }
h3 { font-size: 1.35rem; margin: 0 0 .5rem; }
p { margin: 0 0 1rem; }
.lead { font-size: clamp(1.08rem, 2vw, 1.32rem); color: var(--muted); max-width: 740px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 1.4rem; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .45rem;
  min-height: 2.75rem;
  padding: .72rem 1rem;
  border: 1px solid transparent;
  border-radius: 999px;
  background: var(--brand);
  color: #fff;
  font-weight: 850;
  cursor: pointer;
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
}
.btn:hover { color: #fff; background: var(--brand-dark); transform: translateY(-1px); box-shadow: 0 12px 28px rgba(66, 87, 255, .22); }
.btn.secondary { background: var(--surface); color: var(--ink); border-color: var(--line); }
.btn.secondary:hover { background: var(--brand-soft); color: var(--brand-dark); box-shadow: var(--shadow-soft); }
.btn.ghost { background: transparent; color: var(--brand); border-color: rgba(66, 87, 255, .26); }
.btn.ghost:hover { background: var(--brand-soft); color: var(--brand-dark); }
.hero-card {
  border: 1px solid rgba(223, 229, 239, .8);
  border-radius: calc(var(--radius) + 8px);
  background: rgba(255, 255, 255, .78);
  box-shadow: var(--shadow);
  padding: 1rem;
}
.browser-bar { display: flex; align-items: center; gap: .45rem; padding: .4rem .3rem .9rem; }
.browser-dot { width: .72rem; height: .72rem; border-radius: 50%; background: #cbd5e1; }
.browser-dot:nth-child(1) { background: #ff6b6b; }
.browser-dot:nth-child(2) { background: #fbbf24; }
.browser-dot:nth-child(3) { background: #22c55e; }
.mock-tool {
  background: linear-gradient(180deg, var(--surface-soft), #fff);
  border-radius: 22px;
  padding: 1rem;
  border: 1px solid rgba(223, 229, 239, .8);
}
.mock-row { height: .75rem; border-radius: 999px; background: #dbe4ff; margin: .75rem 0; }
.mock-row.short { width: 64%; }
.mock-row.mid { width: 78%; }
.mock-preview {
  min-height: 150px;
  border-radius: 18px;
  margin-top: 1rem;
  background:
    linear-gradient(135deg, rgba(66, 87, 255, .16), rgba(6, 182, 169, .14)),
    repeating-linear-gradient(90deg, rgba(255,255,255,.45), rgba(255,255,255,.45) 1px, transparent 1px, transparent 18px);
  display: grid;
  place-items: center;
  color: var(--brand-dark);
  font-weight: 900;
  letter-spacing: -.02em;
}
.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: .7rem;
  margin-top: 1rem;
}
.stat { background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: .9rem; }
.stat strong { display: block; font-size: 1.4rem; letter-spacing: -.04em; }
.stat span { color: var(--muted); font-weight: 700; font-size: .82rem; }
.ad-slot {
  display: grid;
  place-items: center;
  min-height: 120px;
  border: 1px dashed #c8d1e1;
  border-radius: 18px;
  background: rgba(255, 255, 255, .62);
  color: #7b8799;
  text-align: center;
  padding: 1rem;
  margin: 2rem 0;
}
.ad-slot small { display: block; margin-top: .25rem; color: #95a0b0; }
.output-box-sm { min-height: 140px; }
.output-box-md { min-height: 180px; }
.section { padding: 3.2rem 0; }
.section-header { display: flex; justify-content: space-between; gap: 1.3rem; align-items: end; margin-bottom: 1.2rem; }
.section-header p { max-width: 660px; color: var(--muted); }
.category-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}
.category-card, .tool-card, .content-card {
  background: rgba(255, 255, 255, .86);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
}
.category-card {
  padding: 1.1rem;
  transition: transform .18s ease, box-shadow .18s ease;
}
.category-card:hover { transform: translateY(-2px); box-shadow: var(--shadow); color: inherit; }
.category-icon {
  width: 2.7rem;
  height: 2.7rem;
  border-radius: 16px;
  display: grid;
  place-items: center;
  background: var(--brand-soft);
  color: var(--brand-dark);
  font-weight: 900;
  margin-bottom: .85rem;
}
.category-card p { color: var(--muted); margin-bottom: 0; }
.tool-card { padding: 1.25rem; margin-bottom: 1.4rem; }
.tool-layout {
  display: grid;
  grid-template-columns: minmax(280px, 410px) minmax(0, 1fr);
  gap: 1.1rem;
  align-items: start;
}
.controls {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .8rem;
}
.field { display: grid; gap: .35rem; }
.field.full { grid-column: 1 / -1; }
label { color: #344056; font-weight: 800; font-size: .88rem; }
input, select, textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  color: var(--ink);
  padding: .74rem .85rem;
  outline: none;
}
input[type="color"] { padding: .25rem; height: 2.85rem; }
input:focus, select:focus, textarea:focus { border-color: rgba(66,87,255,.55); box-shadow: 0 0 0 4px rgba(66,87,255,.12); }
.checkline { display: flex; align-items: center; gap: .55rem; font-weight: 750; color: #344056; }
.checkline input { width: auto; }
.output-actions { display: flex; flex-wrap: wrap; gap: .6rem; margin: 1rem 0 0; }
.output-box {
  width: 100%;
  min-height: 260px;
  resize: vertical;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: .92rem;
  line-height: 1.55;
  background: #101827;
  color: #e6edf7;
  border-color: #263447;
}
.counter-row { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: .65rem; }
.counter-pill {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 999px;
  padding: .32rem .62rem;
  color: var(--muted);
  font-weight: 800;
  font-size: .78rem;
}
.preview-panel {
  min-height: 250px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background:
    linear-gradient(45deg, #f1f5f9 25%, transparent 25%),
    linear-gradient(-45deg, #f1f5f9 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #f1f5f9 75%),
    linear-gradient(-45deg, transparent 75%, #f1f5f9 75%);
  background-size: 20px 20px;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
  display: grid;
  place-items: center;
  overflow: hidden;
  padding: 1rem;
}
.preview-panel img { border-radius: 12px; box-shadow: var(--shadow-soft); }
.split-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 1.1rem; align-items: start; }
.content-card { padding: 1.2rem; }
.prose { color: var(--muted); }
.prose h3 { color: var(--ink); margin-top: 1.2rem; }
.prose ul { padding-left: 1.2rem; }
.prose li { margin: .35rem 0; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; background: #fff; border-radius: 16px; overflow: hidden; border: 1px solid var(--line); }
th, td { padding: .85rem; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { background: var(--brand-soft); color: var(--brand-dark); }
tr:last-child td { border-bottom: 0; }
.faq { display: grid; gap: .7rem; }
details { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: .9rem 1rem; }
summary { cursor: pointer; font-weight: 850; }
details p { color: var(--muted); margin: .75rem 0 0; }
.footer { padding: 2.5rem 0; border-top: 1px solid var(--line); background: rgba(255,255,255,.65); }
.footer-grid { display: grid; grid-template-columns: 1.4fr .8fr .8fr; gap: 1rem; }
.footer a { color: var(--muted); display: inline-block; margin: .2rem 0; }
.notice { border-left: 4px solid var(--accent); background: #ecfeff; padding: .9rem 1rem; border-radius: 14px; color: #155e75; }
.page-hero { padding: 4rem 0 1.5rem; }
.page-hero p { max-width: 780px; color: var(--muted); font-size: 1.1rem; }
.toast {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  background: #101827;
  color: #fff;
  padding: .8rem 1rem;
  border-radius: 999px;
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(8px);
  pointer-events: none;
  transition: opacity .2s ease, transform .2s ease;
  z-index: 60;
}
.toast.show { opacity: 1; transform: translateY(0); }

@media (max-width: 940px) {
  .hero-grid, .tool-layout, .split-grid { grid-template-columns: 1fr; }
  .category-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .section-header { display: block; }
  .footer-grid { grid-template-columns: 1fr; }
}
@media (max-width: 680px) {
  .nav { align-items: flex-start; flex-wrap: wrap; }
  .nav-links { width: 100%; justify-content: flex-start; overflow-x: auto; flex-wrap: nowrap; padding-bottom: .15rem; }
  .nav-links a { white-space: nowrap; }
  .hero { padding-top: 3.2rem; }
  .category-grid, .controls, .stats { grid-template-columns: 1fr; }
  h1 { font-size: 2.55rem; }
  .btn { width: 100%; }
}