:root {
  --font-sans: "Inter", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-display: "Outfit", var(--font-sans);
  --bg: #f4f6f9;
  --surface: #ffffff;
  --text: #1a2332;
  --muted: #5c6b7f;
  --accent: #1e5a8a;
  --accent-soft: #e8f1f8;
  --info-bg: linear-gradient(165deg, #e8f2fb 0%, #ddeaf7 55%, #d4e4f4 100%);
  --info-border: rgba(30, 90, 138, 0.2);
  --info-shadow: 0 10px 32px rgba(30, 90, 138, 0.1);
  --info-text: #3a4d63;
  --border: #e2e8f0;
  --shadow: 0 12px 40px rgba(26, 35, 50, 0.08);
  --radius: 16px;
  --radius-sm: 10px;
  --max: 920px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100dvh;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.6;
  letter-spacing: -0.011em;
  color: var(--text);
  background: linear-gradient(165deg, #eef3f8 0%, var(--bg) 45%, #e8edf4 100%);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(1.25rem, 4vw, 2.5rem);
}

header {
  text-align: center;
  margin-bottom: clamp(1.5rem, 4vw, 2.25rem);
}

.badge {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  margin-bottom: 0.75rem;
}

h1 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4vw, 2.125rem);
  font-weight: 700;
  line-height: 1.2;
  margin: 0 0 0.5rem;
  letter-spacing: -0.035em;
}

header h1,
.content h2,
.steps h3 {
  color: var(--accent);
}

@supports (-webkit-background-clip: text) or (background-clip: text) {
  header h1,
  .content h2,
  .steps h3 {
    background: linear-gradient(115deg, #153d5c 0%, var(--accent) 42%, #4a93c9 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
  }
}

.lead {
  margin: 0 auto;
  max-width: 38ch;
  color: var(--muted);
  font-size: clamp(0.9375rem, 2.2vw, 1.0625rem);
  font-weight: 500;
  letter-spacing: -0.02em;
}

.card-shell,
.steps-shell,
.payment-shell {
  position: relative;
  z-index: 0;
  background: transparent;
  border: none;
  overflow: visible;
  filter: drop-shadow(0 12px 36px rgba(26, 35, 50, 0.1))
    drop-shadow(0 4px 12px rgba(30, 90, 138, 0.07));
}

/* Ruang di bawah kartu utama: padding (bukan margin) agar tidak collapse & tetap terlihat dengan filter */
.card-shell {
  padding-bottom: clamp(1.25rem, 3vw, 1.75rem);
}

.payment-shell {
  margin-top: 0;
}

.steps-shell {
  margin-top: clamp(1.75rem, 4vw, 2.25rem);
}

.card {
  margin: 0;
  background: transparent;
}

.brand {
  font-family: var(--font-display);
  font-size: clamp(1.0625rem, 2.5vw, 1.1875rem);
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.03em;
  margin-bottom: 0.5rem;
}

.card-inner,
.steps-inner {
  display: flex;
  flex-direction: column;
  gap: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-bottom: none;
  border-radius: var(--radius) var(--radius) 0 0;
  overflow: hidden;
}

.steps-inner {
  padding: clamp(1.5rem, 4vw, 2.25rem);
}

.visual {
  background: linear-gradient(145deg, #dbe8f4 0%, #f0f5fa 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: clamp(1.75rem, 5vw, 3rem);
  width: 100%;
}

.visual img {
  width: min(100%, min(96vw, 720px));
  max-width: 100%;
  height: auto;
  display: block;
  margin-left: auto;
  margin-right: auto;
  object-fit: contain;
}

.content {
  padding: clamp(1.5rem, 4vw, 2.25rem);
}

.content h2 {
  font-family: var(--font-display);
  font-size: clamp(1.0625rem, 2.5vw, 1.3125rem);
  font-weight: 600;
  letter-spacing: -0.028em;
  margin: 0 0 0.75rem;
}

.content p {
  margin: 0 0 1rem;
  color: var(--muted);
}

.content p:last-of-type {
  margin-bottom: 0;
}

.notice {
  position: relative;
  overflow: hidden;
  margin-top: 1.25rem;
  padding: calc(0.85rem + 4px) 1.15rem 1.05rem;
  background: var(--info-bg);
  border-radius: var(--radius-sm);
  border: 1px solid var(--info-border);
  border-left: 4px solid var(--accent);
  box-shadow: 0 6px 22px rgba(30, 90, 138, 0.08);
  font-size: 0.9375rem;
  font-weight: 500;
  letter-spacing: -0.015em;
  color: var(--info-text);
}

.notice::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent) 0%, #4a93c9 100%);
}

.notice strong {
  color: var(--accent);
  font-weight: 600;
}

.actions {
  margin-top: 1.5rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  align-items: stretch;
}

@media (max-width: 720px) {
  .actions {
    grid-template-columns: 1fr;
  }
}

.actions .btn {
  width: 100%;
  min-height: 2.875rem;
  text-align: center;
  line-height: 1.3;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.65rem 1rem;
  font-family: var(--font-display);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  text-decoration: none;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

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

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 14px rgba(30, 90, 138, 0.35);
}

.btn-primary:hover {
  filter: brightness(1.05);
}

.btn-secondary {
  background: var(--surface);
  color: var(--accent);
  border: 1px solid var(--border);
}

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

footer {
  margin-top: clamp(1.75rem, 4vw, 2.5rem);
  text-align: center;
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: -0.012em;
  color: var(--muted);
}

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

footer a:hover {
  text-decoration: underline;
}

.steps {
  margin: 0;
  display: flex;
  flex-direction: column;
  background: transparent;
}

.steps h3 {
  font-family: var(--font-display);
  font-size: clamp(1.0625rem, 2.5vw, 1.3125rem);
  font-weight: 600;
  letter-spacing: -0.028em;
  margin: 0 0 1rem;
}

.steps-inner .payment-intro {
  margin: 0 0 1.25rem;
  font-size: 0.9375rem;
  line-height: 1.55;
  color: var(--muted);
}

.steps-inner .payment-intro strong {
  color: var(--text);
  font-weight: 600;
}

.steps ol {
  margin: 0;
  padding-left: 1.25rem;
  color: var(--muted);
}

li {
  margin-bottom: 0.6rem;
}

li:last-child {
  margin-bottom: 0;
}

.steps a {
  color: var(--accent);
  font-weight: 600;
  text-decoration: none;
}

.steps a:hover {
  text-decoration: underline;
}

.payment-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.875rem;
}

@media (max-width: 560px) {
  .payment-grid {
    grid-template-columns: 1fr;
  }
}

.payment-option {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1rem 1.1rem;
  background: var(--surface);
  box-shadow: 0 1px 2px rgba(26, 35, 50, 0.04);
}

.payment-option-header {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.5rem 0.75rem;
  margin-bottom: 0.5rem;
}

.payment-option-logo {
  height: 48px;
  width: auto;
  max-width: 88px;
  object-fit: contain;
  object-position: center;
  flex-shrink: 0;
}

.payment-option-brand {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--accent);
}

.payment-option-desc {
  width: 100%;
  margin: 0 0 0.5rem;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--muted);
}

.payment-option-value {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.payment-option-number {
  width: 100%;
  margin: 0;
  font-family: ui-monospace, "Cascadia Code", "Consolas", monospace;
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--text);
  word-break: break-all;
  text-align: center;
}

.btn-copy {
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--accent);
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, transform 0.1s ease;
}

.btn-copy:hover:not(:disabled) {
  background: var(--accent-soft);
  border-color: rgba(30, 90, 138, 0.25);
}

.btn-copy:active:not(:disabled) {
  transform: translateY(1px);
}

.btn-copy:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.btn-copy:disabled {
  cursor: default;
  opacity: 0.85;
}

/* Gelombang = tepi bawah kartu: putih di atas kurva, transparan di bawah (latar halaman). */
.card-wave {
  display: block;
  width: 100%;
  height: clamp(56px, 16vw, 96px);
  margin: -1px 0 0;
  line-height: 0;
  flex-shrink: 0;
  background: transparent;
  border: 1px solid var(--border);
  border-top: none;
  border-radius: 0 0 var(--radius) var(--radius);
  overflow: hidden;
}

.card-wave-svg {
  display: block;
  width: 100%;
  height: 100%;
}

.card-wave-front {
  fill: var(--surface);
}

.card-wave-edge {
  fill: none;
  stroke: rgba(30, 90, 138, 0.2);
  stroke-width: 1.25;
  vector-effect: non-scaling-stroke;
}

/* --- Animasi saat halaman dimuat (ringan, bertahap) --- */
@keyframes enter-up {
  from {
    opacity: 0;
    transform: translate3d(0, 20px, 0);
  }

  to {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
}

@keyframes enter-soft {
  from {
    opacity: 0;
    transform: scale(0.96) translate3d(0, 12px, 0);
  }

  to {
    opacity: 1;
    transform: scale(1) translate3d(0, 0, 0);
  }
}

@media (prefers-reduced-motion: no-preference) {
  header > .brand,
  header > .badge,
  header > h1,
  header > .lead {
    opacity: 0;
    animation: enter-up 0.58s cubic-bezier(0.22, 1, 0.36, 1) forwards;
  }

  header > .brand {
    animation-delay: 0.04s;
  }

  header > .badge {
    animation-delay: 0.1s;
  }

  header > h1 {
    animation-delay: 0.18s;
  }

  header > .lead {
    animation-delay: 0.26s;
  }

  .wrap > .card-shell,
  .wrap > .payment-shell,
  .wrap > .steps-shell,
  .wrap > footer {
    opacity: 0;
    animation: enter-up 0.65s cubic-bezier(0.22, 1, 0.36, 1) forwards;
  }

  .wrap > .card-shell {
    animation-delay: 0.3s;
  }

  .wrap > .payment-shell {
    animation-delay: 0.42s;
  }

  .wrap > .steps-shell {
    animation-delay: 0.54s;
  }

  .wrap > footer {
    animation-delay: 0.66s;
  }

  .visual img {
    opacity: 0;
    animation: enter-soft 0.78s cubic-bezier(0.22, 1, 0.36, 1) 0.38s forwards;
  }
}

@media (prefers-reduced-motion: reduce) {
  header > .brand,
  header > .badge,
  header > h1,
  header > .lead,
  .wrap > .card-shell,
  .wrap > .payment-shell,
  .wrap > .steps-shell,
  .wrap > footer,
  .visual img {
    animation: none;
    opacity: 1;
    transform: none;
  }
}