.bk-steps {
  --bg: #f8fafc;          /* slate-50 */
  --card: #ffffff;        /* white */
  --text: #0f172a;        /* slate-900 */
  --muted: #475569;       /* slate-600 */
  --border: #e2e8f0;      /* slate-200 */
  --ring: #e2e8f0;        /* slate-200 */

  --slate-50: #f8fafc;
  --slate-100: #f1f5f9;
  --slate-200: #e2e8f0;
  --slate-700: #334155;
  --slate-800: #1f2937;
  --slate-900: #0f172a;

  --emerald-50: #ecfdf5;
  --emerald-200: #a7f3d0;
  --emerald-700: #047857;

  --amber-50: #fffbeb;
  --amber-200: #fde68a;
  --amber-800: #92400e;

  --rose-50: #fff1f2;
  --rose-200: #fecdd3;
  --rose-700: #be123c;

  --sky-50: #f0f9ff;
  --sky-200: #bae6fd;
  --sky-700: #0369a1;

  --shadow: 0 1px 2px rgba(15, 23, 42, 0.06);
  --radius-xl: 14px;
  --radius-2xl: 18px;
  --radius-3xl: 24px;

  --maxw: 1100px;

  color: var(--text);
}

.bk-steps * { box-sizing: border-box; }

.bk-steps a { color: inherit; text-decoration: none; }
.bk-steps a:hover { text-decoration: none; }

.bk-steps .page {
  background: var(--bg);
  border-radius: 18px;
  padding: 18px 0 26px;
}

.bk-steps .container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 16px;
}

.bk-steps .topbar {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-3xl);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.bk-steps .topbar-inner { padding: 18px; }
@media (min-width: 768px) { .bk-steps .topbar-inner { padding: 22px; } }

.bk-steps .header-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
@media (min-width: 900px) {
  .bk-steps .header-grid {
    grid-template-columns: 1.25fr 0.75fr;
    align-items: end;
    gap: 18px;
  }
}

.bk-steps h1 {
  font-size: 28px;
  line-height: 1.1;
  margin: 0;
  font-weight: 800;
  color: var(--slate-900);
}
@media (min-width: 768px) { .bk-steps h1 { font-size: 34px; } }

.bk-steps .lead {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 14px;
  max-width: 720px;
}
@media (min-width: 768px) { .bk-steps .lead { font-size: 16px; } }

.bk-steps .actions {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.bk-steps .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 14px;
  border-radius: 12px;
  font-weight: 700;
  font-size: 14px;
  border: 1px solid var(--border);
  background: var(--card);
  cursor: pointer;
  transition: background 0.12s ease, transform 0.06s ease;
  user-select: none;
}
.bk-steps .btn:hover { background: var(--slate-50); }
.bk-steps .btn:active { transform: translateY(1px); }

.bk-steps .btn-primary {
  background: var(--slate-900);
  color: #fff;
  border-color: transparent;
}
.bk-steps .btn-primary:hover { background: var(--slate-800); }

.bk-steps .badge {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 800;
  border: 1px solid transparent;
  white-space: nowrap;
}
.bk-steps .badge.slate { background: var(--slate-100); color: var(--slate-700); border-color: var(--slate-200); }
.bk-steps .badge.emerald { background: var(--emerald-50); color: var(--emerald-700); border-color: var(--emerald-200); }
.bk-steps .badge.amber { background: var(--amber-50); color: var(--amber-800); border-color: var(--amber-200); }
.bk-steps .badge.rose { background: var(--rose-50); color: var(--rose-700); border-color: var(--rose-200); }
.bk-steps .badge.sky { background: var(--sky-50); color: var(--sky-700); border-color: var(--sky-200); }

.bk-steps .pill-row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-top: 6px; }

.bk-steps .mini-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow);
}
.bk-steps .mini-card-inner { padding: 14px; }

.bk-steps .callout {
  border: 1px solid var(--border);
  border-radius: var(--radius-2xl);
  padding: 14px;
}
.bk-steps .callout .title { font-weight: 800; margin-bottom: 6px; }
.bk-steps .callout.sky { border-color: var(--sky-200); background: var(--sky-50); }
.bk-steps .callout.amber { border-color: var(--amber-200); background: var(--amber-50); }
.bk-steps .callout.rose { border-color: var(--rose-200); background: var(--rose-50); }
.bk-steps .callout.emerald { border-color: var(--emerald-200); background: var(--emerald-50); }
.bk-steps .callout.slate { border-color: var(--slate-200); background: var(--slate-50); }

.bk-steps .content { padding: 18px 0 0; }

.bk-steps .grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 16px;
}
@media (min-width: 768px) { .bk-steps .grid-3 { grid-template-columns: repeat(3, 1fr); gap: 16px; } }

.bk-steps .visual-card {
  border-radius: var(--radius-2xl);
  border: 1px solid var(--border);
  background: var(--card);
  box-shadow: var(--shadow);
}
.bk-steps .visual-card .vc-inner { padding: 14px; }

.bk-steps .vc-head { display: flex; gap: 12px; align-items: flex-start; }
.bk-steps .iconbox {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: var(--slate-50);
  border: 1px solid var(--ring);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
  color: var(--slate-900);
}
.bk-steps .vc-title { font-weight: 800; }
.bk-steps .vc-sub { font-size: 12px; color: var(--muted); margin-top: 2px; }
.bk-steps .vc-body { margin-top: 10px; font-size: 14px; color: var(--slate-700); }

.bk-steps .card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-3xl);
  box-shadow: var(--shadow);
}
.bk-steps .card-inner { padding: 18px; }
@media (min-width: 768px) { .bk-steps .card-inner { padding: 22px; } }

.bk-steps .toc-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin-top: 14px;
}
@media (min-width: 700px) { .bk-steps .toc-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1000px) { .bk-steps .toc-grid { grid-template-columns: 1fr 1fr 1fr; } }

.bk-steps .toc-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border-radius: var(--radius-2xl);
  border: 1px solid var(--border);
  background: var(--card);
  padding: 12px 14px;
  transition: background 0.12s ease;
}
.bk-steps .toc-link:hover { background: var(--slate-50); }
.bk-steps .toc-left { min-width: 0; }
.bk-steps .toc-title { font-weight: 800; font-size: 14px; }
.bk-steps .toc-time { margin-top: 4px; font-size: 12px; color: var(--muted); }

.bk-steps .steps { margin-top: 18px; display: grid; gap: 16px; }
.bk-steps .step { scroll-margin-top: 110px; }

.bk-steps .step-h2 {
  margin: 0;
  font-size: 18px;
  font-weight: 900;
  color: var(--slate-900);
}
@media (min-width: 768px) { .bk-steps .step-h2 { font-size: 20px; } }

.bk-steps .step-grid {
  margin-top: 14px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
@media (min-width: 1000px) { .bk-steps .step-grid { grid-template-columns: 1fr 1fr 1fr; } }

.bk-steps .box {
  border: 1px solid var(--border);
  border-radius: var(--radius-2xl);
  padding: 14px;
  height: 100%;
  background: #fff;
}

.bk-steps .box-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.bk-steps .box-title { font-weight: 900; }

.bk-steps ul { margin: 10px 0 0; padding-left: 18px; }
.bk-steps li { margin: 8px 0; color: var(--slate-700); font-size: 14px; }

.bk-steps .tip {
  margin-top: 10px;
  border-radius: var(--radius-xl);
  background: var(--slate-50);
  border: 1px solid var(--slate-200);
  padding: 12px;
}
.bk-steps .tip small { display: block; font-weight: 900; color: var(--slate-700); }
.bk-steps .tip div { margin-top: 6px; color: var(--slate-700); font-size: 14px; }

.bk-steps .footer-grid {
  margin-top: 18px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
@media (min-width: 900px) { .bk-steps .footer-grid { grid-template-columns: 1fr 1fr; } }

.bk-steps .muted { color: var(--muted); }
.bk-steps .small { font-size: 14px; }
.bk-steps .hidden-md { display: none; }
@media (min-width: 768px) { .bk-steps .hidden-md { display: inline-flex; } }