:root {
  --bg: #ffffff;
  --bg-soft: #f4f7fb;
  --surface: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --border: #dbe3ee;
  --brand: #1d4ed8;
  --brand-strong: #1e40af;
  --brand-soft: #eaf1ff;
  --ok: #166534;
  --warn: #b45309;
  --shadow: 0 1px 2px rgb(15 23 42 / 6%), 0 8px 24px rgb(15 23 42 / 6%);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1220;
    --bg-soft: #0f192d;
    --surface: #131f36;
    --text: #e8eefb;
    --muted: #9fb0cc;
    --border: #243452;
    --brand: #6ea0ff;
    --brand-strong: #9bbcff;
    --brand-soft: #16264a;
    --ok: #4ade80;
    --warn: #fbbf24;
    --shadow: 0 1px 2px rgb(0 0 0 / 40%), 0 8px 24px rgb(0 0 0 / 30%);
    color-scheme: dark;
  }
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  * {
    transition: none !important;
  }
}
body {
  margin: 0;
  font-family:
    Inter,
    ui-sans-serif,
    system-ui,
    -apple-system,
    'Segoe UI',
    Roboto,
    sans-serif;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
a {
  color: var(--brand);
}
a:hover {
  color: var(--brand-strong);
}
:focus-visible {
  outline: 3px solid var(--brand);
  outline-offset: 2px;
  border-radius: 4px;
}
.skip {
  position: absolute;
  left: -999px;
  top: 0;
  background: #1d4ed8;
  color: #fff;
  padding: 0.5rem 1rem;
  z-index: 100;
}
.skip:focus {
  left: 0.5rem;
  top: 0.5rem;
}
.wrap {
  width: min(1120px, 100% - 2rem);
  margin-inline: auto;
}

/* ---------- header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  min-height: 64px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text);
  text-decoration: none;
}
.brand img {
  width: 30px;
  height: 30px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  margin-left: auto;
}
.nav-links a {
  color: var(--muted);
  text-decoration: none;
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  font-weight: 500;
}
.nav-links a.btn-primary,
.nav-links a.btn-primary:hover {
  color: #fff;
  background: #1d4ed8;
}
.nav-links a:hover,
.nav-links a[aria-current='page'] {
  color: var(--text);
  background: var(--bg-soft);
}
.nav-toggle {
  display: none;
  margin-left: auto;
  background: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  padding: 0.4rem 0.7rem;
  font: inherit;
}
@media (max-width: 820px) {
  .nav-toggle {
    display: block;
  }
  .nav-links {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 64px;
    flex-direction: column;
    align-items: stretch;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 0.5rem 1rem 1rem;
    margin: 0;
  }
  .nav-links.open {
    display: flex;
  }
}

/* ---------- tombol ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-height: 44px;
  padding: 0.55rem 1.1rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition:
    transform 0.1s,
    background 0.15s;
}
.btn:hover {
  background: var(--bg-soft);
  color: var(--text);
}
.btn:active {
  transform: translateY(1px);
}
.btn-primary {
  background: #1d4ed8;
  border-color: #1d4ed8;
  color: #fff;
}
.btn-primary:hover {
  background: #1e40af;
  color: #fff;
}
.btn-lg {
  min-height: 52px;
  padding: 0.7rem 1.5rem;
  font-size: 1.05rem;
}

/* ---------- hero ---------- */
.hero {
  padding: clamp(3rem, 8vw, 6rem) 0 clamp(2rem, 5vw, 4rem);
  background:
    radial-gradient(
      900px 400px at 85% -10%,
      color-mix(in srgb, var(--brand) 18%, transparent),
      transparent 70%
    ),
    var(--bg);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 2.5rem;
  align-items: center;
}
@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
}
.eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--brand);
  background: var(--brand-soft);
  border-radius: 999px;
  padding: 0.25rem 0.8rem;
  margin-bottom: 1rem;
}
h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin: 0 0 1rem;
}
.lead {
  font-size: 1.15rem;
  color: var(--muted);
  max-width: 38rem;
  margin: 0 0 1.75rem;
}
.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}
.hero-note {
  margin-top: 0.9rem;
  color: var(--muted);
  font-size: 0.92rem;
}
.mock {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
  padding: 1rem;
}
.mock-bar {
  display: flex;
  gap: 0.35rem;
  margin-bottom: 0.8rem;
}
.mock-bar i {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border);
}
.mock-row {
  display: flex;
  justify-content: space-between;
  padding: 0.45rem 0;
  border-bottom: 1px dashed var(--border);
  font-size: 0.95rem;
}
.mock-row small {
  color: var(--muted);
}
.mock-total {
  display: flex;
  justify-content: space-between;
  font-weight: 700;
  font-size: 1.25rem;
  padding: 0.8rem 0 0.4rem;
}
.mock-pay {
  margin-top: 0.5rem;
  text-align: center;
  background: #1d4ed8;
  color: #fff;
  border-radius: 10px;
  padding: 0.7rem;
  font-weight: 600;
}
.tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--ok);
  background: color-mix(in srgb, var(--ok) 14%, transparent);
  border-radius: 6px;
  padding: 0.05rem 0.45rem;
}

/* ---------- bagian ---------- */
section.block {
  padding: clamp(2.5rem, 6vw, 4.5rem) 0;
}
section.alt {
  background: var(--bg-soft);
}
h2 {
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  letter-spacing: -0.015em;
  margin: 0 0 0.6rem;
}
.sub {
  color: var(--muted);
  max-width: 42rem;
  margin: 0 0 2rem;
}
.grid {
  display: grid;
  gap: 1rem;
}
.grid.cols-3 {
  grid-template-columns: repeat(3, 1fr);
}
.grid.cols-4 {
  grid-template-columns: repeat(4, 1fr);
}
@media (max-width: 960px) {
  .grid.cols-3,
  .grid.cols-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 600px) {
  .grid.cols-3,
  .grid.cols-4 {
    grid-template-columns: 1fr;
  }
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.25rem;
}
.card h3 {
  margin: 0.5rem 0 0.35rem;
  font-size: 1.1rem;
}
.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.97rem;
}
.ico {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: var(--brand-soft);
  font-size: 1.3rem;
}
.steps {
  counter-reset: s;
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(3, 1fr);
}
@media (max-width: 800px) {
  .steps {
    grid-template-columns: 1fr;
  }
}
.step {
  counter-increment: s;
  position: relative;
  padding-left: 3.2rem;
}
.step::before {
  content: counter(s);
  position: absolute;
  left: 0;
  top: 0;
  width: 2.3rem;
  height: 2.3rem;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: #1d4ed8;
  color: #fff;
  font-weight: 700;
}
.step h3 {
  margin: 0 0 0.25rem;
  font-size: 1.1rem;
}
.step p {
  margin: 0;
  color: var(--muted);
}
.callout {
  display: flex;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
  justify-content: space-between;
  background: var(--brand-soft);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.5rem;
}
.callout h2 {
  font-size: 1.5rem;
}

/* ---------- harga ---------- */
.plans {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  align-items: stretch;
}
@media (max-width: 900px) {
  .plans {
    grid-template-columns: 1fr;
  }
}
.plan {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.5rem;
}
.plan.featured {
  border-color: var(--brand);
  box-shadow: var(--shadow);
}
.plan h3 {
  margin: 0;
  font-size: 1.25rem;
}
.price {
  font-size: 2.1rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0.6rem 0 0;
}
.price small {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--muted);
}
.plan ul {
  list-style: none;
  padding: 0;
  margin: 1rem 0 1.5rem;
  display: grid;
  gap: 0.5rem;
  flex: 1;
}
.plan li::before {
  content: '✓';
  color: var(--ok);
  font-weight: 700;
  margin-right: 0.5rem;
}
.plan li.no {
  color: var(--muted);
}
.plan li.no::before {
  content: '–';
  color: var(--muted);
}
.badge-top {
  position: absolute;
  top: -12px;
  left: 1.5rem;
  font-size: 0.78rem;
  font-weight: 700;
  color: #fff;
  background: #1d4ed8;
  border-radius: 999px;
  padding: 0.15rem 0.7rem;
}
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface);
}
table {
  border-collapse: collapse;
  width: 100%;
}
th,
td {
  text-align: left;
  padding: 0.7rem 0.9rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
th {
  background: var(--bg-soft);
  font-size: 0.9rem;
}
tr:last-child td {
  border-bottom: 0;
}
.faq details {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  padding: 0.9rem 1.1rem;
  margin-bottom: 0.6rem;
}
.faq summary {
  cursor: pointer;
  font-weight: 600;
}
.faq p {
  color: var(--muted);
  margin: 0.6rem 0 0;
}
.picker {
  display: grid;
  gap: 0.75rem;
}
.pick {
  display: flex;
  gap: 0.9rem;
  align-items: flex-start;
  border: 2px solid var(--border);
  border-radius: 14px;
  background: var(--surface);
  padding: 1rem 1.1rem;
  cursor: pointer;
}
.pick:has(input:checked) {
  border-color: var(--brand);
  background: var(--brand-soft);
}
.pick input {
  margin-top: 0.35rem;
  width: 1.15rem;
  height: 1.15rem;
}
.pick b {
  display: block;
}
.pick span {
  color: var(--muted);
  font-size: 0.93rem;
}
.err {
  color: var(--warn);
  font-size: 0.9rem;
}

/* ---------- footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--bg-soft);
  padding: 2rem 0;
  color: var(--muted);
  font-size: 0.95rem;
}
.foot {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  justify-content: space-between;
}
.foot a {
  color: var(--muted);
}
.foot ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.35rem;
}

/* ---------- panduan ---------- */
.doc {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 2.5rem;
  padding: 2rem 0 4rem;
}
@media (max-width: 960px) {
  .doc {
    grid-template-columns: 1fr;
  }
}
.toc {
  position: sticky;
  top: 84px;
  align-self: start;
  max-height: calc(100vh - 100px);
  overflow: auto;
  font-size: 0.93rem;
}
@media (max-width: 960px) {
  .toc {
    position: static;
    max-height: none;
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 0.5rem 1rem;
    background: var(--surface);
  }
  .toc details:not([open]) > :not(summary) {
    display: none;
  }
}
.toc h4 {
  margin: 0 0 0.5rem;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}
.toc ul {
  list-style: none;
  padding: 0;
  margin: 0 0 1.25rem;
  display: grid;
  gap: 0.15rem;
}
.toc a {
  display: block;
  padding: 0.3rem 0.6rem;
  border-left: 2px solid var(--border);
  color: var(--muted);
  text-decoration: none;
}
.toc a:hover,
.toc a.on {
  color: var(--brand);
  border-left-color: var(--brand);
  background: var(--brand-soft);
}
.prose {
  min-width: 0;
  max-width: 50rem;
}
.prose h1 {
  font-size: clamp(1.8rem, 4vw, 2.4rem);
}
.prose h2 {
  margin-top: 2.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
  font-size: 1.55rem;
}
.prose h3 {
  margin-top: 1.75rem;
  font-size: 1.2rem;
}
.prose p,
.prose li {
  color: var(--text);
}
.prose li {
  margin: 0.25rem 0;
}
.prose code {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.05rem 0.4rem;
  font-size: 0.9em;
}
.prose pre {
  overflow: auto;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem;
}
.prose pre code {
  border: 0;
  padding: 0;
  background: none;
}
.prose blockquote {
  margin: 1.25rem 0;
  padding: 0.75rem 1rem;
  border-left: 4px solid var(--brand);
  background: var(--brand-soft);
  border-radius: 0 10px 10px 0;
}
.prose blockquote p {
  margin: 0.25rem 0;
}
.prose table {
  display: block;
  overflow-x: auto;
  margin: 1.25rem 0;
  border: 1px solid var(--border);
  border-radius: 10px;
}
.prose .anchor {
  margin-left: 0.4rem;
  text-decoration: none;
  opacity: 0;
  font-weight: 400;
}
.prose h2:hover .anchor,
.prose h3:hover .anchor,
.prose .anchor:focus {
  opacity: 0.6;
}
.cards-guide {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(2, 1fr);
  margin: 1.5rem 0;
}
@media (max-width: 700px) {
  .cards-guide {
    grid-template-columns: 1fr;
  }
}
.cards-guide a.card {
  text-decoration: none;
  color: var(--text);
}
.cards-guide a.card:hover {
  border-color: var(--brand);
}
.pager {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}
@media print {
  .site-header,
  .site-footer,
  .toc,
  .pager,
  .skip {
    display: none;
  }
  .doc {
    display: block;
  }
}