:root {
  --how-shell-border: rgba(157, 46, 197, 0.14);
  --how-surface: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.98),
    rgba(248, 241, 255, 0.92)
  );
  --how-surface-soft: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.94),
    rgba(250, 245, 255, 0.9)
  );
  --how-copy-muted: #665d77;
}

body {
  position: relative;
  overflow-x: clip;
  background: #fbf9ff;
}

body::before {
  content: "";
  position: fixed;
  inset: -10% -8%;
  z-index: -2;
  pointer-events: none;
  background:
    radial-gradient(circle at top left, rgba(220, 200, 255, 0.72), transparent 24%),
    radial-gradient(circle at top right, rgba(255, 220, 238, 0.42), transparent 20%),
    radial-gradient(circle at 20% 74%, rgba(220, 200, 255, 0.24), transparent 20%),
    radial-gradient(circle at 82% 68%, rgba(255, 220, 238, 0.18), transparent 18%),
    linear-gradient(180deg, #fcfbff 0%, #f5efff 44%, #fbf9ff 100%);
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(157, 46, 197, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(157, 46, 197, 0.03) 1px, transparent 1px);
  background-size: 52px 52px;
  opacity: 0.6;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.72), transparent 78%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.72), transparent 78%);
}

header#header {
  position: sticky;
  top: 0;
  z-index: 80;
  min-height: 0;
  padding: 22px 20px 28px;
  background: transparent;
}

#header .topbar {
  max-width: 1240px;
  margin: 0 auto;
  padding: 14px 18px;
  border-radius: 24px;
  border: 1px solid var(--how-shell-border);
  background: rgba(255, 255, 255, 0.74);
  box-shadow: 0 20px 48px rgba(95, 64, 148, 0.12);
  backdrop-filter: blur(18px);
}

#header .left-wrap {
  gap: 28px;
}

#header .brand {
  gap: 14px;
}

#header .brand-logo {
  width: 52px;
  height: 52px;
}

#header .nav {
  gap: 8px;
  padding: 4px;
  border-radius: 999px;
  border: 1px solid rgba(157, 46, 197, 0.08);
  background: rgba(157, 46, 197, 0.05);
}

#header .nav-link {
  padding: 10px 14px;
  border-radius: 999px;
  color: #635a76;
  font-weight: 600;
}

#header .nav-link:hover {
  color: var(--brand);
  background: rgba(255, 255, 255, 0.92);
  border-color: rgba(157, 46, 197, 0.14);
  box-shadow: 0 10px 22px rgba(157, 46, 197, 0.1);
}

#header .nav-link.active {
  color: var(--brand);
  border-color: rgba(157, 46, 197, 0.18);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(246, 238, 255, 0.96));
  box-shadow:
    0 10px 24px rgba(157, 46, 197, 0.12),
    inset 0 -2px 0 var(--brand);
}

#header .actions {
  gap: 12px;
}

#header .header-btn,
#header .notif-btn,
#header .avatar,
#header .mobile-menu-btn {
  border-radius: 999px;
}

#header .header-btn {
  padding: 11px 16px;
}

#header .header-btn-ghost,
#header .notif-btn,
#header .mobile-menu-btn {
  border-color: rgba(157, 46, 197, 0.14);
  background: rgba(255, 255, 255, 0.78);
  box-shadow: 0 10px 20px rgba(157, 46, 197, 0.08);
}

#header .header-btn-ghost:hover,
#header .notif-btn:hover,
#header .mobile-menu-btn:hover {
  background: rgba(255, 255, 255, 0.94);
  border-color: rgba(157, 46, 197, 0.22);
}

#header .notif-btn,
#header .avatar {
  width: 40px;
  height: 40px;
}

#header .avatar {
  background: linear-gradient(135deg, var(--brand), var(--brand-600));
  box-shadow: 0 12px 28px rgba(157, 46, 197, 0.24);
}

#header .notif-menu,
#header .menu {
  top: calc(100% + 12px);
  border-radius: 20px;
  border-color: rgba(157, 46, 197, 0.14);
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 24px 48px rgba(73, 48, 120, 0.16);
  backdrop-filter: blur(18px);
}

.page-head {
  max-width: 1240px;
  margin: 0 auto;
  padding: 18px 20px 0;
}

.head-left {
  position: relative;
  overflow: hidden;
  padding: 34px 34px 30px;
  border-radius: 30px;
  border: 1px solid var(--how-shell-border);
  background: var(--how-surface);
  box-shadow:
    0 24px 56px rgba(112, 77, 173, 0.12),
    inset 0 1px 0 rgba(255, 255, 255, 0.7);
}

.head-left::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 14% 18%, rgba(255, 255, 255, 0.72), transparent 30%),
    radial-gradient(circle at 86% 18%, rgba(157, 46, 197, 0.12), transparent 24%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.12), transparent 40%);
}

.head-left > * {
  position: relative;
  z-index: 1;
}

.page-head h1 {
  margin: 0 0 10px;
  font-size: clamp(2.4rem, 5vw, 4rem);
  line-height: 0.96;
  letter-spacing: -0.05em;
}

.muted {
  color: var(--how-copy-muted);
}

.page-content {
  flex: 1;
}

.page-content.active {
  display: block;
}

.content-section {
  max-width: 1240px;
  margin: 0 auto;
  padding: 22px 20px 70px;
}

.content-section h2 {
  font-size: clamp(1.8rem, 3vw, 2.2rem);
  margin: 0 0 12px;
  color: var(--brand);
  letter-spacing: -0.03em;
}

.steps {
  display: grid;
  gap: 18px;
  margin: 0;
}

.step {
  position: relative;
  overflow: hidden;
  background: var(--how-surface-soft);
  border-radius: 22px;
  padding: 26px 24px;
  border: 1px solid rgba(157, 46, 197, 0.14);
  box-shadow:
    0 16px 34px rgba(90, 61, 140, 0.1),
    inset 0 1px 0 rgba(255, 255, 255, 0.62);
}

.step::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
  background: linear-gradient(90deg, rgba(157, 46, 197, 0.92), rgba(157, 46, 197, 0));
}

.step h3 {
  margin: 0 0 10px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.2rem;
  letter-spacing: -0.02em;
}

.step p {
  margin: 0;
  color: var(--text);
  line-height: 1.72;
}

.step-number {
  width: 34px;
  height: 34px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--brand), var(--brand-600));
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
  box-shadow: 0 10px 24px rgba(157, 46, 197, 0.18);
}

.interactive-step {
  cursor: pointer;
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease,
    border-color 0.2s ease;
}

.interactive-step:hover {
  transform: translateY(-3px);
  box-shadow:
    0 20px 40px rgba(157, 46, 197, 0.16),
    inset 0 1px 0 rgba(255, 255, 255, 0.62);
  border-color: rgba(157, 46, 197, 0.2);
}

.interact-hint {
  margin-top: 14px;
  font-size: 0.88rem;
  color: var(--brand);
  font-weight: 700;
  text-align: right;
  opacity: 0.88;
}

.interactive-step:hover .interact-hint {
  opacity: 1;
  text-decoration: underline;
}

.step-list {
  margin-top: 14px;
  padding-left: 20px;
  font-size: 0.96rem;
  color: #3e3850;
}

.step-list li {
  margin-bottom: 8px;
  line-height: 1.6;
}

.pipeline-details {
  display: grid;
  gap: 16px;
  margin-top: 18px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.pipeline-group {
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(157, 46, 197, 0.1);
  border-radius: 16px;
  padding: 16px;
}

.pipeline-group strong {
  display: block;
  margin-bottom: 10px;
  color: var(--brand);
}

.pipeline-group ul {
  padding-left: 18px;
  margin: 0;
  font-size: 0.9rem;
  color: #555;
}

.pipeline-group li {
  margin-bottom: 6px;
  line-height: 1.55;
}

.best-practices {
  margin-top: 28px;
  padding: 24px;
  border-radius: 22px;
  border: 1px solid rgba(157, 46, 197, 0.14);
  background: var(--how-surface-soft);
  box-shadow:
    0 16px 34px rgba(90, 61, 140, 0.1),
    inset 0 1px 0 rgba(255, 255, 255, 0.62);
}

.best-practices p {
  margin: 0;
  color: var(--how-copy-muted);
  line-height: 1.72;
}

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(25, 15, 40, 0.55);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 1;
  transition: opacity 0.2s ease;
}

.overlay.hidden {
  opacity: 0;
  pointer-events: none;
  visibility: hidden;
}

.overlay-card {
  width: min(92%, 960px);
  background: #fff;
  border-radius: 24px;
  border: 1px solid rgba(157, 46, 197, 0.14);
  box-shadow: 0 28px 58px rgba(73, 48, 120, 0.2);
  display: flex;
  flex-direction: column;
  max-height: 85vh;
  overflow: hidden;
}

.overlay-header {
  padding: 22px 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: linear-gradient(180deg, rgba(249, 240, 255, 0.8), rgba(255, 255, 255, 0.8));
}

.overlay-header h2 {
  margin: 0;
  font-size: 1.5rem;
}

.close-btn {
  width: 40px;
  height: 40px;
  border-radius: 999px;
  background: rgba(157, 46, 197, 0.08);
  border: 1px solid rgba(157, 46, 197, 0.12);
  font-size: 2rem;
  line-height: 1;
  cursor: pointer;
  color: var(--muted);
}

.overlay-body {
  padding: 24px;
  overflow-y: auto;
}

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

.info-card {
  background: var(--how-surface-soft);
  border: 1px solid rgba(157, 46, 197, 0.12);
  border-radius: 18px;
  padding: 18px;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
  height: 100%;
  display: flex;
  flex-direction: column;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.6);
}

.info-card:hover {
  transform: translateY(-2px);
  border-color: rgba(157, 46, 197, 0.18);
  box-shadow: 0 18px 32px rgba(90, 61, 140, 0.12);
}

.info-card h4 {
  margin: 0 0 8px;
  color: var(--brand);
  font-size: 1rem;
}

.info-card p {
  margin: 0;
  font-size: 0.95rem;
  color: #555;
  line-height: 1.6;
}

.extra-info {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  font-size: 0.9rem;
  animation: fadeIn 0.3s ease;
}

.extra-info.hidden {
  display: none;
}

.extra-info ul {
  padding-left: 20px;
  margin: 8px 0 0;
  color: #444;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-5px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.site-footer {
  background: transparent;
  padding: 0 20px 22px;
  text-align: center;
}

.site-footer .line {
  height: 1px;
  margin: 0 auto 16px;
  max-width: 1200px;
  background: linear-gradient(90deg, transparent, rgba(157, 46, 197, 0.18), transparent);
}

.site-footer p {
  margin: 0;
  color: #7c738d;
}

html[data-theme="dark"] body {
  background: #0d1524;
}

html[data-theme="dark"] body::before {
  background:
    radial-gradient(circle at 50% -4%, rgba(161, 96, 235, 0.12), transparent 16%),
    radial-gradient(circle at top left, rgba(161, 96, 235, 0.14), transparent 24%),
    radial-gradient(circle at top right, rgba(69, 124, 255, 0.1), transparent 20%),
    radial-gradient(circle at 14% 22%, rgba(44, 68, 108, 0.16), transparent 18%),
    radial-gradient(circle at 86% 26%, rgba(161, 96, 235, 0.1), transparent 18%),
    radial-gradient(circle at 18% 64%, rgba(37, 60, 97, 0.14), transparent 20%),
    radial-gradient(circle at 84% 62%, rgba(161, 96, 235, 0.08), transparent 18%),
    radial-gradient(circle at 52% 92%, rgba(26, 42, 67, 0.16), transparent 24%),
    linear-gradient(180deg, #0b1220 0%, #0e1625 48%, #0d1524 100%);
}

html[data-theme="dark"] body::after {
  opacity: 0.28;
}

html[data-theme="dark"] #header .topbar {
  border-color: #304158;
  background: rgba(13, 20, 34, 0.78);
  box-shadow: 0 24px 50px rgba(0, 0, 0, 0.34);
}

html[data-theme="dark"] #header .nav {
  border-color: rgba(161, 96, 235, 0.16);
  background: rgba(161, 96, 235, 0.08);
}

html[data-theme="dark"] #header .nav-link {
  color: #d1d8e4;
}

html[data-theme="dark"] #header .nav-link:hover {
  background: rgba(22, 32, 48, 0.92);
  border-color: rgba(161, 96, 235, 0.2);
  color: #f2e8ff;
}

html[data-theme="dark"] #header .nav-link.active {
  background: linear-gradient(180deg, rgba(27, 39, 59, 0.96), rgba(19, 28, 43, 0.96));
  border-color: rgba(161, 96, 235, 0.24);
}

html[data-theme="dark"] #header .header-btn-ghost,
html[data-theme="dark"] #header .notif-btn,
html[data-theme="dark"] #header .mobile-menu-btn {
  border-color: #304158;
  background: rgba(18, 28, 44, 0.78);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.18);
}

html[data-theme="dark"] #header .header-btn-ghost:hover,
html[data-theme="dark"] #header .notif-btn:hover,
html[data-theme="dark"] #header .mobile-menu-btn:hover {
  background: rgba(24, 36, 56, 0.94);
}

html[data-theme="dark"] #header .notif-menu,
html[data-theme="dark"] #header .menu {
  border-color: #304158;
  background: rgba(16, 24, 39, 0.94);
  box-shadow: 0 28px 54px rgba(0, 0, 0, 0.34);
}

html[data-theme="dark"] .head-left,
html[data-theme="dark"] .step,
html[data-theme="dark"] .best-practices,
html[data-theme="dark"] .overlay-card,
html[data-theme="dark"] .info-card,
html[data-theme="dark"] .pipeline-group {
  border-color: #304158;
  background: linear-gradient(180deg, rgba(20, 29, 46, 0.94), rgba(13, 20, 34, 0.88));
  box-shadow:
    0 22px 42px rgba(0, 0, 0, 0.24),
    inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

html[data-theme="dark"] .head-left::before {
  background:
    radial-gradient(circle at 14% 18%, rgba(30, 44, 68, 0.84), transparent 30%),
    radial-gradient(circle at 86% 18%, rgba(161, 96, 235, 0.14), transparent 24%),
    linear-gradient(180deg, rgba(17, 25, 39, 0.16), transparent 40%);
}

html[data-theme="dark"] .muted,
html[data-theme="dark"] .best-practices p,
html[data-theme="dark"] .info-card p,
html[data-theme="dark"] .extra-info ul,
html[data-theme="dark"] .step-list,
html[data-theme="dark"] .pipeline-group ul,
html[data-theme="dark"] .site-footer p {
  color: #a7b5c8;
}

html[data-theme="dark"] .interactive-step:hover,
html[data-theme="dark"] .info-card:hover {
  box-shadow: 0 24px 42px rgba(0, 0, 0, 0.28);
}

html[data-theme="dark"] .overlay-header {
  background: rgba(255, 255, 255, 0.01);
  border-bottom-color: #304158;
}

html[data-theme="dark"] .close-btn {
  color: #c6d2e2;
  background: rgba(161, 96, 235, 0.12);
  border-color: rgba(161, 96, 235, 0.18);
}

html[data-theme="dark"] .close-btn:hover {
  color: var(--text);
}

html[data-theme="dark"] .interact-hint {
  color: #caa5ff;
}

html[data-theme="dark"] .site-footer .line {
  background: linear-gradient(90deg, transparent, rgba(161, 96, 235, 0.24), transparent);
}

@media (max-width: 900px) {
  header#header {
    padding: 14px 16px 22px;
  }

  #header .topbar {
    padding: 12px 14px;
  }

  #header .nav {
    top: calc(100% + 12px);
    left: 12px;
    right: 12px;
    padding: 12px;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.94);
    box-shadow: 0 20px 40px rgba(83, 56, 130, 0.14);
    backdrop-filter: blur(18px);
  }

  html[data-theme="dark"] #header .nav {
    border-color: #304158;
    background: rgba(16, 24, 39, 0.96);
  }

  .page-head,
  .content-section {
    padding-left: 16px;
    padding-right: 16px;
  }
}

@media (max-width: 720px) {
  .page-head {
    padding-top: 12px;
  }

  .head-left {
    padding: 28px 22px 24px;
    border-radius: 24px;
  }

  .page-head h1 {
    font-size: clamp(2.1rem, 12vw, 3.2rem);
  }

  .step,
  .best-practices {
    padding: 22px 18px;
    border-radius: 20px;
  }

  .overlay-card {
    width: calc(100% - 20px);
    border-radius: 20px;
  }

  .overlay-header,
  .overlay-body {
    padding: 18px;
  }

  .site-footer {
    padding: 0 16px 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .interactive-step,
  .info-card,
  .close-btn {
    transition: none;
  }
}