:root {
  --ink: #1d2733;
  --ink-soft: #4f5b69;
  --paper: #f5f7f9;
  --surface: #ffffff;
  --line: #dce3ea;
  --accent: #234f7d;
  --accent-hover: #183153;
  --accent-soft: #eaf0f6;
  --on-accent: #ffffff;
  --mark-yellow: #ffe27a;
  --mark-coral: #ffb4a2;
  --mark-blue: #b9d6f5;
  --mark-green: #c3e3bd;
  --mark-ink: #1d2733;
  --shadow: 0 8px 28px rgba(24, 49, 83, 0.12);
  --radius: 14px;
  --max: 1080px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ink: #e7edf3;
    --ink-soft: #a8b4c1;
    --paper: #11161d;
    --surface: #19212b;
    --line: #2c3845;
    --accent: #8db8e6;
    --accent-hover: #b3d0ef;
    --accent-soft: #1e2b3a;
    --on-accent: #0e1620;
    --shadow: 0 8px 28px rgba(0, 0, 0, 0.35);
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --ink: #e7edf3;
  --ink-soft: #a8b4c1;
  --paper: #11161d;
  --surface: #19212b;
  --line: #2c3845;
  --accent: #8db8e6;
  --accent-hover: #b3d0ef;
  --accent-soft: #1e2b3a;
  --on-accent: #0e1620;
  --shadow: 0 8px 28px rgba(0, 0, 0, 0.35);
  color-scheme: dark;
}

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

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  font-size: 17px;
  line-height: 1.6;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

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

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

.wrap {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 16px;
}

/* Header */
.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 60px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  color: var(--ink);
  text-decoration: none;
}

.brand img {
  width: 28px;
  height: 28px;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: var(--accent);
  color: var(--on-accent);
  font-size: 15px;
}

.site-nav {
  display: flex;
  gap: 18px;
  font-size: 15px;
}

.site-nav a {
  color: var(--ink-soft);
  text-decoration: none;
}

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

/* Sections */
section {
  padding: 56px 0;
}

section + section {
  border-top: 1px solid var(--line);
}

h1,
h2,
h3 {
  line-height: 1.2;
  margin: 0 0 12px;
}

h1 {
  font-size: clamp(32px, 6vw, 52px);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(24px, 4vw, 32px);
  letter-spacing: -0.01em;
}

h3 {
  font-size: 19px;
}

p {
  margin: 0 0 14px;
}

.lead {
  font-size: clamp(18px, 2.4vw, 21px);
  color: var(--ink-soft);
  max-width: 640px;
}

.section-intro {
  color: var(--ink-soft);
  max-width: 640px;
  margin-bottom: 28px;
}

mark {
  color: var(--mark-ink);
  padding: 0 0.15em;
  border-radius: 4px;
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}

.mk-yellow { background: var(--mark-yellow); }
.mk-coral { background: var(--mark-coral); }
.mk-blue { background: var(--mark-blue); }
.mk-green { background: var(--mark-green); }

/* Hero */
.hero {
  padding-top: 64px;
}

.hero-grid {
  display: grid;
  gap: 40px;
}

.hero-shot {
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--line);
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 16px;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  font-family: inherit;
}

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

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

.btn-secondary {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}

.btn-secondary:hover {
  background: var(--accent-soft);
  color: var(--ink);
}

.fine-print {
  font-size: 14px;
  color: var(--ink-soft);
  margin-top: 12px;
}

/* Cards */
.grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
}

.card p:last-child {
  margin-bottom: 0;
}

.card .eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
  margin-bottom: 6px;
}

.card-sample {
  font-size: 15px;
  color: var(--ink-soft);
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
}

.tool-card {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 18px;
  align-items: start;
}

.tool-card img {
  width: 64px;
  height: 64px;
}

/* Feature list */
.feature-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 12px 28px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.feature-list li {
  position: relative;
  padding-left: 26px;
}

.feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 14px;
  height: 8px;
  border-radius: 3px;
  background: var(--mark-yellow);
}

.feature-list li:nth-child(4n + 2)::before { background: var(--mark-coral); }
.feature-list li:nth-child(4n + 3)::before { background: var(--mark-blue); }
.feature-list li:nth-child(4n + 4)::before { background: var(--mark-green); }

/* Steps */
.steps {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  counter-reset: step;
}

.steps li {
  counter-increment: step;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
}

.steps li::before {
  content: counter(step);
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--on-accent);
  font-weight: 700;
  margin-bottom: 12px;
}

/* Privacy band */
.privacy-band {
  background: var(--accent-soft);
}

.privacy-points {
  list-style: none;
  padding: 0;
  margin: 0 0 20px;
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  font-weight: 600;
}

/* FAQ */
.faq details {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0 20px;
  margin-bottom: 10px;
}

.faq summary {
  cursor: pointer;
  font-weight: 600;
  padding: 16px 0;
}

.faq details[open] summary {
  border-bottom: 1px solid var(--line);
  margin-bottom: 14px;
}

.faq details > *:last-child {
  margin-bottom: 16px;
}

/* Contact */
.contact-email {
  font-weight: 600;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 28px 0 40px;
  font-size: 14px;
  color: var(--ink-soft);
}

.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  justify-content: space-between;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
}

.site-footer a {
  color: var(--ink-soft);
}

@media (min-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr 1.15fr;
    align-items: center;
  }
}

@media (max-width: 520px) {
  body {
    font-size: 16px;
  }

  section {
    padding: 40px 0;
  }

  .site-nav {
    gap: 14px;
    font-size: 14px;
  }

  .btn {
    width: 100%;
  }
}