:root {
  --content-max-width: 1400px;
  --c-ink: #1a1528;
  --c-ink-soft: #3d3750;
  --c-muted: #6f6882;
  --c-faint: #9a93ab;
  --c-brand: #5b3fd4;
  --c-brand-deep: #3d2a9e;
  --c-brand-hot: #7c5cff;
  --c-brand-soft: #ede8ff;
  --c-brand-wash: #f3efff;
  --c-line: rgba(91, 63, 212, 0.12);
  --c-line-strong: rgba(91, 63, 212, 0.22);
  --c-surface: #ffffff;
  --c-surface-soft: rgba(255, 255, 255, 0.72);
  --content-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --content-radius: 18px;
}

dialog{
  display: contents;
}

body.content-page {
  margin: 0;
  color: var(--c-ink);
  background:
    radial-gradient(1200px 600px at 8% -10%, rgba(124, 92, 255, 0.28), transparent 55%),
    radial-gradient(900px 500px at 92% 8%, rgba(61, 42, 158, 0.18), transparent 50%),
    radial-gradient(700px 420px at 50% 100%, rgba(237, 232, 255, 0.9), transparent 60%),
    linear-gradient(180deg, #f7f4ff 0%, #f2eefc 40%, #efeaf8 100%);
  background-attachment: fixed;
}

body.content-page::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.45;
  background-image:
    linear-gradient(rgba(91, 63, 212, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(91, 63, 212, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.55), transparent 85%);
}

.content-site-header,
.content-layout,
.content-site-footer {
  position: relative;
  z-index: 1;
}

.content-site-header {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 30;
}

.content-site-header__inner,
.content-site-footer__inner {
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 0 20px;
}

.content-site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 68px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.35);
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(16px) saturate(1.4);
  -webkit-backdrop-filter: blur(16px) saturate(1.4);
  box-shadow: 0 10px 30px rgba(61, 42, 158, 0.06);
}

.content-site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  color: var(--c-brand-deep);
  font-size: 1.12rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
  text-decoration: none;
  transition: color 0.2s var(--content-ease), transform 0.2s var(--content-ease);
}

.content-site-header__brand:hover {
  color: var(--c-brand);
  transform: translateY(-1px);
}

.content-site-header__logo {
  display: block;
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  object-fit: cover;
  border-radius: 50%;
  box-shadow:
    0 0 0 3px rgba(255, 255, 255, 0.9),
    0 0 0 5px rgba(91, 63, 212, 0.25);
}

.content-site-header__toggle {
  display: none;
}

.content-site-footer {
  margin-top: 40px;
}

.content-site-footer__inner {
  display: flex;
  align-items: center;
  min-height: 88px;
  border-top: 1px solid var(--c-line);
  background:
    linear-gradient(135deg, rgba(61, 42, 158, 0.92), rgba(91, 63, 212, 0.88)),
    #3d2a9e;
  border-radius: 24px 24px 0 0;
  box-shadow: 0 -16px 40px rgba(61, 42, 158, 0.12);
}

.content-site-footer__copy {
  margin: 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.88rem;
  font-weight: 500;
}

.content-layout {
  display: grid;
  grid-template-columns: 248px minmax(0, 1fr);
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 0 0 56px;
  align-items: start;
  min-height: calc(100dvh - 180px);
}

.content-sidebar {
  position: sticky;
  top: 96px;
  margin: 84px 0 0;
  padding: 20px 14px;
  border-radius: var(--content-radius);
  background: var(--c-surface-soft);
  border: 1px solid rgba(255, 255, 255, 0.7);
  box-shadow:
    0 18px 40px rgba(61, 42, 158, 0.08),
    inset 0 1px 0 rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.content-sidebar__title {
  margin: 0 0 16px;
  color: var(--c-muted);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.content-sidebar__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.content-sidebar__list li + li {
  margin-top: 4px;
}

.content-sidebar__list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 14px;
  border-radius: 12px;
  color: var(--c-ink-soft);
  text-decoration: none;
  font-size: 0.95rem;
  line-height: 1.4;
  transition:
    background 0.2s var(--content-ease),
    color 0.2s var(--content-ease),
    transform 0.2s var(--content-ease),
    box-shadow 0.2s var(--content-ease);
}

.content-sidebar__list a:hover {
  background: var(--c-brand-wash);
  color: var(--c-brand);
  transform: translateX(3px);
}

.content-sidebar__list a.is-active {
  color: #fff;
  background: linear-gradient(135deg, var(--c-brand-hot), var(--c-brand-deep));
  font-weight: 700;
  box-shadow: 0 10px 22px rgba(91, 63, 212, 0.28);
}

.content-sidebar__count {
  flex-shrink: 0;
  min-width: 24px;
  padding: 2px 8px;
  border-radius: 999px;
  color: var(--c-muted);
  background: rgba(91, 63, 212, 0.08);
  font-size: 0.75rem;
  font-weight: 700;
  text-align: center;
}

.content-sidebar__list a.is-active .content-sidebar__count {
  color: var(--c-brand-deep);
  background: rgba(255, 255, 255, 0.92);
}

.content-main {
  margin-top: 68px;
  min-width: 0;
  animation: content-rise 0.55s var(--content-ease) both;
}

.content-main > article {
  min-height: calc(100dvh - 245px);
  padding-top: 28px;
}

.content-page__title {
  margin: 0 0 14px;
  padding: 0 28px;
  color: var(--c-ink);
  font-size: clamp(1.85rem, 2.4vw, 2.35rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.3;
  word-break: keep-all;
}

.content-page__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  margin: 0 0 8px;
  padding: 0 28px;
  color: var(--c-muted);
  font-size: 0.92rem;
}

.content-page__category {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  color: var(--c-brand);
  background: var(--c-brand-soft);
  font-weight: 700;
  font-size: 0.82rem;
}

.content-page__body {
  margin: 16px 0 0 16px;
  padding: 28px 24px;
  border-radius: var(--content-radius);
  background: var(--c-surface);
  border: 1px solid rgba(255, 255, 255, 0.8);
  box-shadow:
    0 20px 50px rgba(61, 42, 158, 0.07),
    0 1px 0 rgba(255, 255, 255, 0.9) inset;
  line-height: 1.8;
  color: var(--c-ink-soft);
}

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

.content-page__body > :last-child {
  margin-bottom: 0;
}

.content-page__body h2,
.content-page__body h3 {
  color: var(--c-ink);
  letter-spacing: -0.02em;
}

.content-page__body a {
  color: var(--c-brand);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.content-page__body img {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
}

.content-page__body table {
  width: 100%;
  margin: 1.2em 0;
  border-collapse: collapse;
  border: 1px solid var(--c-line-strong);
}

.content-page__body th,
.content-page__body td {
  padding: 10px 14px;
  border: 1px solid var(--c-line-strong);
  vertical-align: top;
}

.content-page__body th {
  color: var(--c-ink);
  background: var(--c-brand-wash);
  font-weight: 700;
  text-align: left;
}

.content-page__body--list {
  padding: 10px 18px;
}

.content-adjacent {
  margin: 28px 0 0 16px;
  overflow: hidden;
  border-radius: var(--content-radius);
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  box-shadow: 0 14px 36px rgba(61, 42, 158, 0.06);
}

.content-adjacent__row {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 56px;
  padding: 14px 20px;
  transition: background 0.2s var(--content-ease);
}

.content-adjacent__row:hover {
  background: var(--c-brand-wash);
}

.content-adjacent__row + .content-adjacent__row {
  border-top: 1px solid var(--c-line);
}

.content-adjacent__label {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 42px;
  height: 28px;
  padding: 0 8px;
  border-radius: 8px;
  color: var(--c-brand);
  background: var(--c-brand-soft);
  font-size: 0.78rem;
  font-weight: 800;
}

.content-adjacent__link {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  flex: 1;
  color: var(--c-ink);
  text-decoration: none;
}

.content-adjacent__link:hover .content-adjacent__subject {
  color: var(--c-brand);
}

.content-adjacent__subject {
  overflow: hidden;
  min-width: 0;
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1.4;
  text-overflow: ellipsis;
  white-space: nowrap;
  transition: color 0.15s;
}

.content-adjacent__date {
  flex-shrink: 0;
  color: var(--c-faint);
  font-size: 0.85rem;
}

.content-adjacent__date::before {
  content: "·";
  margin-right: 10px;
  color: #ccc;
}

.content-adjacent__empty {
  color: var(--c-faint);
  font-size: 0.9rem;
}

.content-category-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.content-category-list li + li {
  border-top: 1px solid var(--c-line);
}

.content-category-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 10px;
  margin: 0 -10px;
  border-radius: 12px;
  color: var(--c-ink);
  text-decoration: none;
  transition: background 0.2s var(--content-ease), transform 0.2s var(--content-ease);
}

.content-category-list a:hover {
  background: var(--c-brand-wash);
  transform: translateX(4px);
}

.content-category-list a:hover .content-category-list__subject {
  color: var(--c-brand);
}

.content-category-list__subject {
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  transition: color 0.15s;
}

.content-category-list__date {
  flex-shrink: 0;
  color: var(--c-faint);
  font-size: 0.85rem;
  font-weight: 600;
}

.content-empty {
  margin: 0;
  padding: 56px 0;
  color: var(--c-muted);
  text-align: center;
}

.content-home {
  padding: 8px 0 24px;
}

.content-home__hero {
  position: relative;
  overflow: hidden;
  margin: 8px 16px 0;
  padding: 36px 32px 34px;
  border-radius: 24px;
  color: #fff;
  background:
    radial-gradient(520px 280px at 90% 0%, rgba(255, 255, 255, 0.22), transparent 55%),
    radial-gradient(420px 260px at 0% 100%, rgba(124, 92, 255, 0.45), transparent 55%),
    linear-gradient(145deg, #4a2fc4 0%, #6a48e8 48%, #3d2a9e 100%);
  box-shadow:
    0 28px 60px rgba(61, 42, 158, 0.28),
    inset 0 1px 0 rgba(255, 255, 255, 0.25);
  isolation: isolate;
}

.content-home__hero-glow {
  position: absolute;
  inset: auto -10% -40% auto;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.28), transparent 70%);
  animation: content-glow 8s ease-in-out infinite alternate;
  pointer-events: none;
  z-index: 0;
}

.content-home__hero > *:not(.content-home__hero-glow) {
  position: relative;
  z-index: 1;
}

.content-home__brand {
  margin: 0 0 10px;
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1.15;
  text-shadow: 0 8px 24px rgba(20, 10, 60, 0.25);
}

.content-home__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin: 0 0 14px;
  padding: 6px 12px;
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.95);
  background: rgba(255, 255, 255, 0.16);
  border: 1px solid rgba(255, 255, 255, 0.22);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  backdrop-filter: blur(8px);
}

.content-home__title {
  padding: 0;
  margin: 0 0 18px;
  color: #fff;
  font-size: clamp(1.15rem, 1.8vw, 1.45rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.5;
  opacity: 0.95;
}

.content-home__summary {
  margin: 0;
  color: var(--c-ink-soft);
  font-size: 1.05rem;
  line-height: 1.8;
  word-break: keep-all;
}

.content-home__summary.content-page__body {
  margin-top: 18px;
  padding-top: 28px;
}

.content-home__topics {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.content-home__topics li {
  padding: 7px 13px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.16);
  border: 1px solid rgba(255, 255, 255, 0.22);
  color: #fff;
  font-size: 0.84rem;
  font-weight: 700;
  backdrop-filter: blur(6px);
  transition: background 0.2s var(--content-ease), transform 0.2s var(--content-ease);
}

.content-home__topics li:hover {
  background: rgba(255, 255, 255, 0.28);
  transform: translateY(-1px);
}

.content-home__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.content-home__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 12px;
  background: #fff;
  color: var(--c-brand-deep);
  font-size: 0.95rem;
  font-weight: 800;
  text-decoration: none;
  box-shadow: 0 12px 28px rgba(20, 10, 60, 0.2);
  transition: transform 0.2s var(--content-ease), box-shadow 0.2s var(--content-ease);
}

.content-home__cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 32px rgba(20, 10, 60, 0.28);
}

.content-home__cta--secondary {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.35);
  box-shadow: none;
}

.content-home__cta--secondary:hover {
  background: rgba(255, 255, 255, 0.2);
}

.content-home__faq,
.content-home__links {
  padding: 28px 28px 0;
}

.content-home__faq h2,
.content-home__links h2 {
  margin: 0 0 16px;
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--c-ink);
}

.content-home__faq-list {
  display: grid;
  gap: 10px;
}

.content-home__faq-item {
  border: 1px solid var(--c-line);
  border-radius: 14px;
  background: var(--c-surface);
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(61, 42, 158, 0.04);
}

.content-home__faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 14px 16px;
  font-weight: 700;
  color: var(--c-ink);
}

.content-home__faq-item summary::-webkit-details-marker {
  display: none;
}

.content-home__faq-item summary::after {
  content: "+";
  float: right;
  color: var(--c-brand);
  font-weight: 700;
}

.content-home__faq-item[open] summary::after {
  content: "–";
}

.content-home__faq-item p {
  margin: 0;
  padding: 0 16px 16px;
  color: var(--c-muted);
  line-height: 1.7;
}

.content-home__links ul {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.content-home__links a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 14px;
  border-radius: 12px;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  color: var(--c-ink-soft);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 700;
  box-shadow: 0 8px 20px rgba(61, 42, 158, 0.05);
  transition:
    background 0.2s var(--content-ease),
    color 0.2s var(--content-ease),
    border-color 0.2s var(--content-ease),
    transform 0.2s var(--content-ease);
}

.content-home__links a:hover {
  background: var(--c-brand-wash);
  border-color: var(--c-line-strong);
  color: var(--c-brand);
  transform: translateY(-2px);
}

.content-article__header {
  position: relative;
  padding-bottom: 8px;
}

.content-article__header::after {
  content: "";
  display: block;
  width: 56px;
  height: 4px;
  margin: 18px 28px 0;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--c-brand-hot), var(--c-brand-deep));
}

@keyframes content-rise {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes content-glow {
  from {
    transform: translate3d(0, 0, 0) scale(1);
    opacity: 0.7;
  }
  to {
    transform: translate3d(-24px, -18px, 0) scale(1.12);
    opacity: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .content-main,
  .content-home__hero-glow {
    animation: none;
  }

  .content-sidebar__list a,
  .content-home__cta,
  .content-home__links a,
  .content-category-list a,
  .content-site-header__brand {
    transition: none;
  }
}

@media (max-width: 900px) {
  .content-layout {
    grid-template-columns: 1fr;
    gap: 0;
    padding-top: 0;
  }

  .content-site-header__inner,
  .content-site-footer__inner {
    padding: 0 14px;
  }

  .content-site-header__toggle {
    display: inline-flex;
    flex-shrink: 0;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    margin-left: auto;
    padding: 0;
    border: 0;
    border-radius: 12px;
    background: var(--c-brand-soft);
    cursor: pointer;
  }

  .content-site-header__burger {
    display: grid;
    gap: 5px;
    width: 22px;
  }

  .content-site-header__burger i {
    display: block;
    height: 2px;
    border-radius: 2px;
    background: var(--c-brand-deep);
    transition: transform 0.2s ease, opacity 0.2s ease;
  }

  .content-site-header__toggle.is-open .content-site-header__burger i:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .content-site-header__toggle.is-open .content-site-header__burger i:nth-child(2) {
    opacity: 0;
  }

  .content-site-header__toggle.is-open .content-site-header__burger i:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .content-sidebar {
    position: sticky;
    top: 0;
    z-index: 20;
    margin: 0;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: rgba(255, 255, 255, 0.94);
    box-shadow: none;
    backdrop-filter: none;
  }

  .content-sidebar:not(.is-open) {
    border-bottom: 0;
  }

  .content-sidebar.is-open {
    border-bottom: 1px solid var(--c-line);
    box-shadow: 0 16px 30px rgba(61, 42, 158, 0.08);
  }

  .content-sidebar__nav {
    display: none;
    padding: 8px 12px 12px;
  }

  .content-sidebar.is-open .content-sidebar__nav {
    display: block;
  }

  .content-main {
    margin-top: 68px;
  }

  .content-main > article {
    padding-top: 20px;
  }

  .content-page__title,
  .content-page__meta,
  .content-home__faq,
  .content-home__links {
    padding-left: 16px;
    padding-right: 16px;
  }

  .content-page__title {
    font-size: 1.55rem;
  }

  .content-article__header::after {
    margin-left: 16px;
  }

  .content-home__hero {
    margin: 4px 12px 0;
    padding: 28px 22px 26px;
    border-radius: 20px;
  }

  .content-page__body,
  .content-adjacent {
    margin-left: 12px;
    margin-right: 12px;
  }

  .content-site-footer__inner {
    border-radius: 18px 18px 0 0;
  }
}