:root {
  --edufis-primary-start: #5ec5d4;
  --edufis-primary-end: #6366f1;
  --edufis-secondary-start: #34d399;
  --edufis-secondary-end: #0ea5e9;
  --edufis-surface: #ffffff;
  --edufis-muted: #f5f7fb;
  --edufis-border: rgba(15, 23, 42, 0.08);
  --edufis-shadow: 0 18px 45px rgba(45, 37, 108, 0.18);
  --edufis-radius: 18px;
  --edufis-pill: 999px;
  --edufis-text: #1f2a44;
  --edufis-text-soft: #475569;
  --edufis-link: #2563eb;
  --edufis-link-hover: #4338ca;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: linear-gradient(160deg, rgba(94, 197, 212, 0.18), rgba(99, 102, 241, 0.22));
}

body {
  margin: 0;
  font-family: 'Poppins', 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--edufis-text);
  background: transparent;
}

a,
a:visited {
  color: var(--edufis-link);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover,
a:focus {
  color: var(--edufis-link-hover);
}

#content,
#contentWrap,
#main-wrapper {
  background: transparent;
}

#header {
  margin: 0 auto;
  padding: 56px 32px 24px;
  max-width: 1080px;
  text-align: center;
  color: #fff;
  background: radial-gradient(circle at top left, rgba(94, 197, 212, 0.75), rgba(99, 102, 241, 0.92));
  border-radius: 0 0 var(--edufis-radius) var(--edufis-radius);
  box-shadow: var(--edufis-shadow);
}

#header h1 {
  margin: 0;
  font-size: clamp(2.2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

#header #headerContent {
  font-size: 1rem;
  opacity: 0.85;
  margin-top: 12px;
}

#main-wrapper {
  max-width: 1080px;
  margin: -38px auto 48px;
  padding: 0 24px 80px;
}

#siteNav {
  background: var(--edufis-surface);
  border-radius: var(--edufis-radius);
  box-shadow: 0 12px 35px rgba(15, 23, 42, 0.08);
  padding: 24px 28px;
  margin-bottom: 32px;
}

#siteNav ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

#siteNav li {
  margin: 6px 0;
}

#siteNav li:first-child {
  margin-top: 0;
}

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

#siteNav li ul {
  margin-top: 8px;
  margin-left: 18px;
  padding-left: 0;
  border-left: 3px solid rgba(99, 102, 241, 0.15);
}

#siteNav li ul li {
  margin: 6px 0 6px 12px;
}

#siteNav a {
  display: inline-flex;
  align-items: center;
  padding: 9px 18px;
  border-radius: var(--edufis-pill);
  background: rgba(99, 102, 241, 0.12);
  color: var(--edufis-text);
  font-weight: 500;
  border: 1px solid transparent;
  transition: all 0.2s ease;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.12);
}

#siteNav a:hover,
#siteNav a:focus,
#siteNav a.current-page {
  border-color: rgba(99, 102, 241, 0.35);
  background: linear-gradient(135deg, var(--edufis-primary-start), var(--edufis-primary-end));
  color: #fff;
  box-shadow: 0 8px 20px rgba(99, 102, 241, 0.25);
}

#nodeDecoration,
#nodeTitle {
  display: none;
}

#main {
  background: transparent;
}

.pagination {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin: 48px 0 0;
}

.pagination a {
  flex: 1;
  padding: 14px 18px;
  border-radius: var(--edufis-pill);
  border: 1px solid rgba(148, 163, 184, 0.35);
  display: inline-flex;
  justify-content: center;
  align-items: center;
  background: var(--edufis-surface);
  color: var(--edufis-text);
  font-weight: 600;
  box-shadow: 0 10px 40px rgba(15, 23, 42, 0.12);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.pagination a:hover,
.pagination a:focus {
  transform: translateY(-2px);
  box-shadow: 0 16px 45px rgba(99, 102, 241, 0.25);
  background: linear-gradient(135deg, var(--edufis-secondary-start), var(--edufis-secondary-end));
  color: #fff;
}

.iDevice_wrapper {
  background: var(--edufis-surface);
  border-radius: var(--edufis-radius);
  box-shadow: 0 18px 45px rgba(15, 23, 42, 0.08);
  border: 1px solid var(--edufis-border);
  margin: 28px 0;
  overflow: visible;
  position: relative;
}

.iDevice_wrapper:before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(94, 197, 212, 0.18), rgba(99, 102, 241, 0.16));
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.iDevice_wrapper:hover:before,
.iDevice_wrapper:focus-within:before {
  opacity: 1;
}

.iDevice_inner {
  padding: 32px 36px;
}

.iDeviceTitle,
.iDeviceTitle h2 {
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--edufis-text);
  margin: 0 0 18px;
}

.iDevice_icon {
  filter: drop-shadow(0 6px 18px rgba(37, 99, 235, 0.25));
}

.iDevice_content,
.iDevice_content p {
  line-height: 1.65;
  color: var(--edufis-text-soft);
}

.emphasis0 .iDeviceTitle,
.emphasis0 .iDeviceTitle h2 {
  color: var(--edufis-primary-end);
}

.emphasis1 .iDeviceTitle,
.emphasis1 .iDeviceTitle h2 {
  color: var(--edufis-secondary-end);
}

.activityIdevice .iDeviceTitle,
.activityIdevice .iDeviceTitle h2 {
  color: #f97316;
}

.iDevice_header {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}

.iDeviceTitle {
  flex: 1 1 auto;
  min-width: 0;
}

.iDeviceTitle h2 {
  line-height: 1.35;
  word-break: break-word;
}

.iDevice_controls {
  display: none;
}

.exe-figure {
  background: var(--edufis-muted);
  border-radius: var(--edufis-radius);
  padding: 18px;
  border: 1px solid rgba(148, 163, 184, 0.35);
  box-shadow: 0 6px 22px rgba(15, 23, 42, 0.08);
}

.exe-figure img {
  border-radius: var(--edufis-radius);
  width: 100%;
  height: auto;
}

blockquote {
  border-left: 6px solid var(--edufis-primary-end);
  background: rgba(99, 102, 241, 0.08);
  padding: 18px 22px;
  border-radius: var(--edufis-radius);
  color: var(--edufis-text-soft);
}

table,
.exe-table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  border-radius: var(--edufis-radius);
  overflow: hidden;
  box-shadow: 0 10px 35px rgba(148, 163, 184, 0.25);
}

table th,
table td,
.exe-table th,
.exe-table td {
  padding: 14px 18px;
  border: 1px solid rgba(148, 163, 184, 0.24);
  background: var(--edufis-surface);
}

table th,
.exe-table th {
  background: linear-gradient(135deg, rgba(94, 197, 212, 0.35), rgba(99, 102, 241, 0.38));
  color: #fff;
  text-align: left;
}

.exe-enum {
  background: rgba(14, 165, 233, 0.08);
  padding: 14px 18px;
  border-radius: var(--edufis-radius);
  border: 1px solid rgba(14, 165, 233, 0.25);
}

.exe-downloads a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  border-radius: var(--edufis-pill);
  background: linear-gradient(135deg, var(--edufis-secondary-start), var(--edufis-secondary-end));
  color: #fff;
  font-weight: 600;
  box-shadow: 0 14px 35px rgba(14, 165, 233, 0.35);
}

.exe-credit {
  border-radius: var(--edufis-pill);
  background: rgba(79, 70, 229, 0.08);
  padding: 10px 18px;
}

#packageLicense {
  margin-top: 48px;
  background: rgba(148, 163, 184, 0.1);
  border-radius: var(--edufis-radius);
  padding: 28px;
  border: 1px solid rgba(148, 163, 184, 0.25);
  box-shadow: 0 10px 35px rgba(71, 85, 105, 0.15);
}

#packageLicense p {
  margin: 0;
}

#packageLicense img {
  max-height: 42px;
  margin-left: 12px;
}

code,
pre {
  font-family: 'Fira Code', 'Source Code Pro', monospace;
  background: rgba(15, 23, 42, 0.85);
  color: #f8fafc;
  border-radius: 12px;
  padding: 12px 16px;
  overflow-x: auto;
}

.exe-tabs {
  border-radius: var(--edufis-radius);
  background: var(--edufis-muted);
  padding: 16px;
}

.exe-tabs-menu li {
  border-radius: var(--edufis-pill);
  border: none;
  background: rgba(148, 163, 184, 0.24);
  color: var(--edufis-text);
}

.exe-tabs-menu li.selected {
  background: linear-gradient(135deg, var(--edufis-primary-start), var(--edufis-primary-end));
  color: #fff;
}

.exe-tabs-menu li a {
  color: inherit;
  padding: 10px 18px;
  display: inline-block;
}

@media (max-width: 900px) {
  #main-wrapper {
    padding: 0 16px 48px;
  }

  #siteNav ul {
    justify-content: flex-start;
  }

  .iDevice_inner {
    padding: 24px;
  }
}