:root {
  --page-bg: #f4f5f7;
  --surface: #ffffff;
  --surface-strong: #111827;
  --surface-soft: #f8fbff;
  --ink: #172033;
  --ink-soft: #52607a;
  --accent: #2f6fed;
  --accent-strong: #204eaf;
  --accent-soft: #dfe8ff;
  --accent-soft-strong: #c8d8ff;
  --warning-soft: #fff2cf;
  --warning-soft-strong: #f4df9e;
  --danger-soft: #fde4e4;
  --danger-soft-strong: #efc2c2;
  --success-soft: #dff4ea;
  --success-soft-strong: #b8e6cf;
  --border: #d7dfec;
  --shadow-soft: 0 18px 50px rgba(17, 24, 39, 0.08);
  --shadow-pop: 0 16px 36px rgba(17, 24, 39, 0.1);
  --radius-s: 0.4rem;
  --radius-m: 0.55rem;
  --radius-l: 0.7rem;
}

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

html {
  background: var(--page-bg);
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background:
    radial-gradient(circle at top right, rgba(47, 111, 237, 0.08), transparent 28rem),
    linear-gradient(180deg, #f7f8fb 0%, #eef2f8 100%);
  color: var(--ink);
  font-family:
    "Avenir Next",
    Avenir,
    "Segoe UI",
    sans-serif;
  line-height: 1.5;
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--accent-strong);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: #173b82;
}

button,
input,
select,
textarea {
  font: inherit;
}

.site-main {
  flex: 1;
  padding: 1.1rem 0 2.5rem;
}

.page-container {
  width: min(1100px, calc(100% - 2rem));
  margin: 0 auto;
}

.container {
  width: 100%;
}

.content > :first-child {
  margin-top: 0;
}

.content p,
.content ul,
.content ol {
  margin: 0 0 1rem;
}

.content code {
  padding: 0.08rem 0.35rem;
  border-radius: 0.2rem;
  background: #edf3ff;
  color: #1d3f84;
  font-family:
    "SFMono-Regular",
    Consolas,
    monospace;
}

.title,
.subtitle,
.label {
  margin: 0 0 0.75rem;
  font-weight: 700;
  line-height: 1.15;
  color: var(--ink);
}

.title.is-1 {
  font-size: clamp(2.4rem, 7vw, 4.2rem);
}

.title.is-2 {
  font-size: clamp(2rem, 5vw, 3rem);
}

.title.is-3 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
}

.title.is-4 {
  font-size: clamp(1.2rem, 1.8vw, 1.5rem);
}

.title.is-5 {
  font-size: 1.1rem;
}

.subtitle {
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--ink-soft);
}

.has-text-light,
.panel-card.is-dark .title,
.panel-card.is-dark .subtitle,
.panel-card.is-dark .label {
  color: #f8faff;
}

.has-text-danger {
  color: #b94a4a;
}

.has-text-centered {
  text-align: center;
}

.has-text-weight-semibold {
  font-weight: 700;
}

.is-size-5 {
  font-size: 1.1rem;
}

.is-size-6 {
  font-size: 0.95rem;
}

.mt-4 {
  margin-top: 1.5rem;
}

.is-hidden {
  display: none !important;
}

.button,
.input,
.textarea,
.select select,
.dropdown-content,
.box,
.notification {
  border-radius: var(--radius-m);
}

.button {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 2.85rem;
  padding: 0.7rem 1rem;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--ink);
  cursor: pointer;
  transition:
    background-color 0.2s ease,
    border-color 0.2s ease,
    color 0.2s ease,
    box-shadow 0.2s ease,
    transform 0.2s ease;
}

.button:hover {
  border-color: #c6d3eb;
  transform: translateY(-1px);
}

.button.is-small {
  min-height: 2.2rem;
  padding: 0.5rem 0.8rem;
  font-size: 0.9rem;
}

.button.is-medium {
  min-height: 2.8rem;
}

.button.is-large {
  min-height: 3.05rem;
  padding-inline: 1.15rem;
}

.button.is-fullwidth {
  width: 100%;
}

.button.is-primary {
  background: var(--accent-soft);
  border-color: var(--accent-soft-strong);
  color: #173b82;
  box-shadow: none;
}

.button.is-primary:hover,
.button.is-primary:focus-visible {
  background: #d3e0ff;
  border-color: #b7cbff;
  color: #102e6a;
}

.button.is-success {
  background: var(--success-soft);
  border-color: var(--success-soft-strong);
  color: #1d6b46;
}

.button.is-warning {
  background: var(--warning-soft);
  border-color: var(--warning-soft-strong);
  color: #7a5a0b;
}

.input,
.textarea,
.select select {
  width: 100%;
  border: 1px solid var(--border);
  background: #fbfcff;
  color: var(--ink);
  padding: 0.8rem 0.9rem;
  outline: none;
  transition:
    border-color 0.2s ease,
    box-shadow 0.2s ease,
    background-color 0.2s ease;
}

.textarea {
  min-height: 7rem;
  resize: vertical;
}

.input:focus,
.textarea:focus,
.select select:focus,
.input:focus-visible,
.textarea:focus-visible,
.select select:focus-visible {
  border-color: #b7cbff;
  box-shadow: 0 0 0 0.18rem rgba(183, 203, 255, 0.26);
}

.input.is-warning,
.textarea.is-warning {
  background: #fffdf6;
  border-color: #e6d7a4;
}

.input.is-danger,
.textarea.is-danger {
  background: #fff8f8;
  border-color: #e8bcbc;
}

.select {
  position: relative;
  min-width: 13rem;
}

.select select {
  appearance: none;
  padding-right: 2.5rem;
}

.select::after {
  content: "";
  position: absolute;
  right: 1rem;
  top: 50%;
  width: 0.55rem;
  height: 0.55rem;
  border-right: 2px solid #5d7194;
  border-bottom: 2px solid #5d7194;
  transform: translateY(-65%) rotate(45deg);
  pointer-events: none;
}

.box,
.panel-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-l);
  box-shadow: var(--shadow-soft);
}

.box {
  padding: 1.25rem;
}

.notification {
  padding: 1rem 1.15rem;
  border: 1px solid var(--border);
  background: var(--surface-soft);
}

.notification.is-warning {
  background: #fff7df;
  border-color: #f0e1ac;
  color: #6b5621;
}

.notification.is-success {
  background: #edf9f2;
  border-color: #c6e7d2;
  color: #24573c;
}

.notification.is-danger,
.notification.is-danger.is-light {
  background: #fff1f1;
  border-color: #f0cccc;
  color: #7b3131;
}

.tabs ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin: 0;
  padding: 0;
  list-style: none;
  border-bottom: 1px solid var(--border);
}

.tabs li {
  margin: 0;
}

.tabs a {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  min-height: 2.75rem;
  padding: 0.7rem 0.95rem;
  border: 1px solid transparent;
  border-bottom: 0;
  border-radius: var(--radius-s) var(--radius-s) 0 0;
  color: var(--ink-soft);
}

.tabs a:hover {
  background: #f5f8ff;
  color: var(--accent-strong);
  border-color: #d1ddf5;
}

.tabs li.is-active a {
  background: var(--surface);
  color: #173b82;
  border-color: var(--border);
}

.dropdown {
  position: relative;
  display: inline-block;
}

.dropdown.is-right .dropdown-menu {
  right: 0;
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + 0.4rem);
  left: 0;
  min-width: 16rem;
  display: none;
  z-index: 20;
}

.dropdown.is-active .dropdown-menu {
  display: block;
}

.dropdown-content {
  padding: 0.4rem;
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: var(--shadow-pop);
}

.dropdown-item {
  display: block;
  width: 100%;
  padding: 0.7rem 0.8rem;
  border-radius: var(--radius-s);
  color: var(--ink);
}

.dropdown-item:hover,
.dropdown-item.is-active {
  background: #eef4ff;
  color: #173b82;
}

.field + .field {
  margin-top: 0.85rem;
}

.field.is-horizontal {
  display: flex;
  gap: 0.9rem;
  align-items: center;
}

.field-label {
  flex: 0 0 8rem;
}

.field-body {
  flex: 1;
}

.label {
  display: block;
  margin-bottom: 0.4rem;
  font-size: 0.92rem;
}

.icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.25rem;
  height: 1.25rem;
}

.navbar {
  background:
    linear-gradient(135deg, rgba(7, 12, 24, 0.96), rgba(18, 30, 56, 0.94));
  color: #f8faff;
}

.navbar.is-dark {
  color: #f8faff;
}

.site-navbar {
  box-shadow: 0 10px 30px rgba(8, 15, 30, 0.25);
}

.site-navbar > .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: min(1100px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 0.45rem 0;
}

.navbar-brand,
.navbar-start,
.navbar-end {
  display: flex;
  align-items: center;
}

.navbar-brand {
  gap: 0.9rem;
  flex: 1;
  min-width: 0;
}

.navbar-menu {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

.navbar-end {
  gap: 0.2rem;
}

.navbar-item {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  min-height: 2.15rem;
  padding: 0.42rem 0.75rem;
  border-radius: var(--radius-m);
  color: #edf4ff;
}

.navbar-item:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.08);
}

.site-navbar .navbar-item.is-active {
  background: rgba(255, 255, 255, 0.12);
  color: #ffffff;
}

.external-link-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.82em;
  line-height: 1;
  opacity: 0.82;
  transform: translateY(-0.04em);
}

.navbar-item:hover .external-link-mark,
.navbar-item:focus-visible .external-link-mark {
  opacity: 1;
}

.site-brand {
  gap: 0.75rem;
  padding-left: 0;
  padding-block: 0.2rem;
  margin-right: auto;
}

.site-brand:hover {
  background: transparent;
}

.site-brand-logo {
  max-height: 2rem;
  filter: brightness(0) invert(1);
}

.site-brand-title {
  margin: 0;
  line-height: 1;
  color: #f8faff;
}

.navbar-burger {
  display: none;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  cursor: pointer;
  margin-left: auto;
}

.navbar-burger span {
  display: block;
  width: 1.3rem;
  height: 2px;
  margin: 0.24rem auto;
  border-radius: 999px;
  background: currentColor;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.navbar-burger.is-active span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.navbar-burger.is-active span:nth-child(2) {
  opacity: 0;
}

.navbar-burger.is-active span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.panel-card.is-dark {
  background:
    radial-gradient(circle at top right, rgba(120, 167, 255, 0.2), transparent 14rem),
    linear-gradient(145deg, #36537e 0%, #22344f 100%);
  border-color: rgba(255, 255, 255, 0.12);
  color: #f8faff;
}

.section-stack > * + * {
  margin-top: 1.5rem;
}

.code-block {
  border-radius: var(--radius-m);
  background: #f6f8fa;
  color: #24292f;
  overflow-x: auto;
  box-shadow:
    inset 0 0 0 1px #d0d7de,
    0 6px 18px rgba(31, 35, 40, 0.06);
}

.code-block pre {
  margin: 0;
  padding: 1rem 1.1rem;
  white-space: pre-wrap;
  font-size: 0.95rem;
  line-height: 1.55;
}

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

.site-footer {
  background: transparent;
  padding-top: 0;
}

.footer {
  margin-top: auto;
}

.site-footer .content {
  width: min(1100px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1.25rem 1.5rem;
  border-top: 1px solid var(--border);
  color: var(--ink-soft);
}

@media screen and (max-width: 900px) {
  .field.is-horizontal {
    flex-direction: column;
    align-items: stretch;
  }

  .field-label {
    flex-basis: auto;
  }
}

@media screen and (max-width: 768px) {
  .site-main {
    padding-top: 0.8rem;
  }

  .page-container,
  .site-navbar > .container,
  .site-footer .content {
    width: min(100%, calc(100% - 1rem));
  }

  .site-brand-title {
    font-size: 1.1rem;
  }

  .navbar-burger {
    display: inline-block;
  }

  .navbar-menu {
    position: absolute;
    top: calc(100% + 0.35rem);
    left: 0.5rem;
    right: 0.5rem;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0.25rem;
    padding: 0.45rem;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-l);
    background: rgba(9, 16, 31, 0.97);
    box-shadow: var(--shadow-pop);
  }

  .navbar-menu.is-active {
    display: flex;
  }

  .site-navbar {
    position: relative;
  }

  .site-navbar > .container {
    align-items: center;
    padding: 0.4rem 0;
  }

  .navbar-brand {
    width: 100%;
  }

  .navbar-end,
  .navbar-start {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
  }

  .navbar-item {
    width: 100%;
    justify-content: flex-start;
    border-radius: var(--radius-s);
  }

  .button,
  .select,
  .select select {
    width: 100%;
  }
}