:root {
  --island-blue: #0788cf;
  --island-blue-deep: #0069a8;
  --island-mint: #34dbb5;
  --island-ink: #142234;
  --island-muted: #566a7e;
  --island-line: rgba(35, 170, 255, 0.16);
  --island-surface: rgba(255, 255, 255, 0.9);
  --island-shadow: 0 18px 48px rgba(42, 102, 145, 0.13);
  --island-radius: 18px;
}

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

html {
  scroll-behavior: smooth;
  background: #f9fcff;
}

body {
  position: relative;
  isolation: isolate;
  min-width: 0;
  color: var(--island-ink);
  background: transparent;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
  line-height: 1.7;
}

body,
button,
input,
textarea {
  font-family: inherit;
}

img {
  max-width: 100%;
}

a,
button,
input,
textarea {
  outline: none;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 3px solid rgba(35, 170, 255, 0.4);
  outline-offset: 3px;
}

.skip-link,
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link:focus {
  position: fixed;
  z-index: 999;
  top: 12px;
  left: 12px;
  width: auto;
  height: auto;
  clip: auto;
  margin: 0;
  padding: 10px 16px;
  color: #fff;
  background: var(--island-blue-deep);
  border-radius: 10px;
}

.container {
  min-width: 0;
  width: 100%;
}

#bg_can {
  position: fixed;
  z-index: -1;
  inset: 0;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  pointer-events: none;
}

.island-particle {
  position: absolute;
  top: var(--particle-y);
  left: var(--particle-x);
  width: 0;
  height: 0;
  border-right: calc(var(--particle-size) * 0.62) solid transparent;
  border-bottom: var(--particle-size) solid rgba(213, 239, 255, 0.78);
  border-left: calc(var(--particle-size) * 0.62) solid transparent;
  pointer-events: none;
  transform: rotate(var(--particle-rotation));
  animation: island-particle-drift var(--particle-duration) linear var(--particle-delay) infinite;
  will-change: transform;
}

@keyframes island-particle-drift {
  from {
    transform: translate3d(0, 16vh, 0) rotate(var(--particle-rotation));
  }
  to {
    transform: translate3d(0, -126vh, 0) rotate(calc(var(--particle-rotation) + 210deg));
  }
}

.site-header {
  height: 78px;
  background: rgba(255, 255, 255, 0.86);
  border-bottom: 1px solid rgba(35, 170, 255, 0.12);
  box-shadow: 0 8px 30px rgba(42, 102, 145, 0.08);
  backdrop-filter: blur(16px) saturate(135%);
}

header#masthead .navigation-top .hdr_menu {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(18px, 3vw, 48px);
  max-width: 1180px;
  height: 78px;
  padding: 0 24px;
  margin: 0 auto;
}

header#masthead .navigation-top .hdr_menu li {
  margin: 0;
}

header#masthead .navigation-top .hdr_menu li a .ja {
  font-weight: 600;
}

header#masthead .navigation-top .hdr_menu li.current-menu-item a .ja,
header#masthead .navigation-top .hdr_menu a[aria-current="page"] .ja {
  color: var(--island-blue-deep);
}

header#masthead .navigation-top .hdr_menu li.current-menu-item .line,
header#masthead .navigation-top .hdr_menu a[aria-current="page"] .line {
  width: 100%;
  opacity: 1;
}

.island_logo_box img {
  height: 42px;
  width: auto;
  border-radius: 0;
}

.island_logo_box #logo img {
  width: auto;
  max-width: none;
  height: 42px;
}

.search_box {
  margin-left: auto !important;
}

.search {
  display: flex;
  align-items: center;
  gap: 8px;
}

.search input[type="search"],
.error_form input[type="search"] {
  width: 180px;
  min-height: 38px;
  padding: 8px 13px;
  color: var(--island-ink);
  background: rgba(242, 249, 255, 0.92);
  border: 1px solid rgba(35, 170, 255, 0.2);
  border-radius: 999px;
  transition: width 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.search input[type="search"]:focus {
  width: 230px;
  border-color: var(--island-blue);
  box-shadow: 0 0 0 4px rgba(35, 170, 255, 0.1);
}

.search button,
.blog_btn,
.island-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 8px 16px;
  color: #fff;
  font-weight: 700;
  background: linear-gradient(135deg, var(--island-blue), #55c8ff);
  border: 0;
  border-radius: 999px;
  box-shadow: 0 8px 18px rgba(35, 170, 255, 0.22);
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.search button:hover,
.blog_btn:hover,
.island-button:hover {
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 11px 22px rgba(35, 170, 255, 0.3);
}

.island_top_banner {
  height: min(1000px, 82vh);
  min-height: 600px;
  max-width: none;
  background-size: cover;
  background-position: center;
  background-attachment: scroll;
  overflow: hidden;
}

.island_top_banner::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(4, 55, 94, 0.06) 45%, rgba(5, 62, 104, 0.42) 100%),
    linear-gradient(90deg, rgba(255, 255, 255, 0.1), transparent 45%);
}

.hero-overlay {
  position: absolute;
  z-index: 2;
  left: clamp(28px, 7vw, 130px);
  bottom: clamp(54px, 10vh, 120px);
  max-width: 620px;
  padding: 24px 28px;
  color: #fff;
  text-shadow: 0 2px 18px rgba(4, 45, 76, 0.5);
  background: rgba(5, 51, 87, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 20px;
  box-shadow: 0 18px 50px rgba(6, 67, 108, 0.2);
  backdrop-filter: blur(10px);
}

.hero-kicker {
  margin-bottom: 8px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
}

.hero-title {
  font-size: clamp(32px, 5vw, 64px);
  font-weight: 800;
  line-height: 1.15;
}

.hero-description {
  margin-top: 8px;
  font-size: clamp(14px, 1.4vw, 18px);
}

#content {
  padding: 0 24px;
  overflow: visible;
}

#content .wrap {
  max-width: 1180px;
  margin: 0 auto;
}

#content .wrap .page-header,
.wrap .page-header {
  margin: 82px 0 52px;
}

#content .wrap .page-header .title_area h1,
#content .wrap .page-header .title_area h3,
.wrap .page-header .title_area h1,
.wrap .page-header .title_area h3 {
  color: var(--island-blue);
  font-size: clamp(54px, 8vw, 92px);
  font-weight: 200;
  letter-spacing: 0.04em;
  line-height: 1;
}

#content .wrap .page-header .title_area .jp,
.wrap .page-header .title_area .jp {
  margin-top: clamp(36px, 5.5vw, 61px);
  padding: 7px 14px;
  font-size: clamp(14px, 1.7vw, 21px);
  background: var(--island-ink);
  border-radius: 4px;
}

#content .wrap .content-area .site-main .news_list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 34px 28px;
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  text-align: left;
}

#content .wrap .content-area .site-main .news_cell {
  display: flex;
  flex-direction: column;
  width: auto;
  min-width: 0;
  margin: 0;
  overflow: hidden;
  background: var(--island-surface);
  border: 1px solid var(--island-line);
  border-radius: var(--island-radius);
  box-shadow: 0 10px 30px rgba(42, 102, 145, 0.09);
  backdrop-filter: blur(10px);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

#content .wrap .content-area .site-main .news_cell:hover {
  transform: translateY(-6px);
  border-color: rgba(35, 170, 255, 0.38);
  box-shadow: var(--island-shadow);
}

#content .wrap .content-area .site-main .news_cell .top_area {
  margin: 0;
}

#content .wrap .content-area .site-main .news_cell .top_area .thumb {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  margin: 0;
  overflow: hidden;
  background: #eaf7ff;
}

#content .wrap .content-area .site-main .news_cell .top_area .thumb a,
#content .wrap .content-area .site-main .news_cell .top_area .thumb img {
  width: 100%;
  height: 100%;
}

#content .wrap .content-area .site-main .news_cell .top_area .thumb img {
  display: block;
  object-fit: cover;
  transition: transform 0.45s ease;
}

#content .wrap .content-area .site-main .news_cell:hover .thumb img {
  transform: scale(1.035);
}

.hvr_anim:hover {
  opacity: 1;
}

#content .wrap .content-area .site-main .news_cell .top_area .category {
  top: 14px;
  left: 14px;
  max-width: calc(100% - 28px);
  padding: 7px 11px;
  overflow: hidden;
  color: #fff;
  font-size: 12px;
  line-height: 1.2;
  text-overflow: ellipsis;
  white-space: nowrap;
  background: rgba(8, 123, 103, 0.94);
  border-radius: 999px;
  box-shadow: 0 5px 15px rgba(11, 122, 99, 0.18);
  backdrop-filter: blur(7px);
}

#content .wrap .content-area .site-main .news_cell .top_area .category.cat_event {
  background: rgba(8, 123, 103, 0.94);
}

#content .wrap .content-area .site-main .news_cell .info_area {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 20px 21px 18px;
}

#content .wrap .content-area .site-main .news_cell .info_area .title {
  display: -webkit-box;
  min-height: 3.2em;
  margin: 0 0 10px;
  overflow: hidden;
  color: var(--island-ink);
  font-size: 18px;
  font-weight: 750;
  line-height: 1.6;
  text-overflow: ellipsis;
  white-space: normal;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

#content .wrap .content-area .site-main .news_cell .info_area .date {
  margin-top: auto;
  color: var(--island-blue-deep);
  font-size: 13px;
  letter-spacing: 0.04em;
}

.pagination {
  grid-column: 1 / -1;
  margin: 30px 0 80px;
}

.pagination .nav-links li,
.pagination .nav-links .page-numbers {
  overflow: hidden;
  color: var(--island-ink);
  background: #fff;
  border: 1px solid var(--island-line);
  border-radius: 10px;
}

.pagination .nav-links li.current,
.pagination .nav-links li:hover {
  color: #fff;
  background: var(--island-blue);
  border-color: var(--island-blue);
}

#blogLoader.loader_body {
  position: fixed;
  inset: 0;
  z-index: 20;
  background: rgba(250, 253, 255, 0.74);
  backdrop-filter: blur(5px);
}

.loader_body.is-finished {
  opacity: 0;
  transition: opacity 0.35s ease;
}

.load-error {
  grid-column: 1 / -1;
  padding: 14px 18px;
  color: #8a3441;
  text-align: center;
  background: #fff2f4;
  border: 1px solid #ffd3d9;
  border-radius: 12px;
}

.empty-state {
  grid-column: 1 / -1;
  padding: 54px 24px;
  text-align: center;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--island-line);
  border-radius: 20px;
  box-shadow: var(--island-shadow);
}

.empty-state h2 {
  margin-bottom: 8px;
  font-size: 26px;
}

.empty-state p {
  margin-bottom: 24px;
  color: var(--island-muted);
}

.post_body {
  width: min(900px, calc(100% - 32px));
  margin: 30px auto 80px;
  padding: clamp(24px, 5vw, 58px);
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--island-line);
  border-radius: 24px;
  box-shadow: var(--island-shadow);
  backdrop-filter: blur(12px);
}

.post_body.is-article {
  width: min(1180px, calc(100% - 32px));
}

.article-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 250px;
  gap: clamp(34px, 5vw, 68px);
  align-items: start;
}

.article-heading {
  text-align: center;
}

.reading-progress {
  position: fixed;
  z-index: 110;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  pointer-events: none;
}

.reading-progress span {
  display: block;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, var(--island-blue), var(--island-mint));
  box-shadow: 0 0 12px rgba(35, 170, 255, 0.45);
  transform: scaleX(0);
  transform-origin: left center;
  will-change: transform;
}

.article-toc-panel {
  position: sticky;
  top: 104px;
  max-height: calc(100vh - 132px);
  overflow: auto;
  color: var(--island-muted);
}

.article-toc-panel details {
  padding: 16px 17px;
  background: rgba(243, 250, 255, 0.9);
  border: 1px solid var(--island-line);
  border-radius: 14px;
}

.article-toc-panel summary {
  color: var(--island-ink);
  font-weight: 750;
  cursor: pointer;
}

#articleToc ol {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

#articleToc li {
  margin: 3px 0;
}

#articleToc .toc-level-3 {
  padding-left: 13px;
}

#articleToc .toc-level-4 {
  padding-left: 26px;
}

#articleToc a {
  display: block;
  padding: 5px 8px;
  overflow: hidden;
  color: var(--island-muted);
  font-size: 13px;
  line-height: 1.45;
  text-overflow: ellipsis;
  white-space: nowrap;
  border-left: 2px solid transparent;
  border-radius: 0 7px 7px 0;
}

#articleToc a:hover,
#articleToc a.is-active {
  color: var(--island-blue-deep);
  background: rgba(35, 170, 255, 0.08);
  border-left-color: var(--island-blue);
}

.post_body *,
.post-content,
.comment-content {
  word-break: normal;
  overflow-wrap: anywhere;
}

.post-title {
  margin-bottom: 18px;
  color: var(--island-ink);
  font-size: clamp(28px, 5vw, 42px);
  font-weight: 760;
  line-height: 1.35;
  letter-spacing: 0;
}

.post-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 7px 18px;
  padding: 0;
  margin-bottom: 34px;
  color: var(--island-muted);
  list-style: none;
}

.post-meta li {
  margin: 0;
  padding: 0;
  border: 0;
}

.post-meta a {
  color: #3e5368;
}

.post-content {
  color: #26384a;
  font-size: 16px;
  line-height: 1.9;
}

.post-content p {
  margin-bottom: 1.35em;
  font-size: inherit;
  line-height: inherit;
}

.post-content h2,
.post-content h3,
.post-content h4 {
  position: relative;
  margin: 1.8em 0 0.8em;
  color: var(--island-ink);
  font-weight: 750;
  line-height: 1.45;
}

.post-content h2 {
  padding-left: 14px;
  font-size: 1.65em;
  border-left: 4px solid var(--island-blue);
}

.post-content h3 {
  font-size: 1.35em;
}

.post-content h4 {
  font-size: 1.15em;
}

.post-content a {
  color: var(--island-blue-deep);
  border-bottom: 1px solid rgba(35, 170, 255, 0.35);
}

.post-content img {
  display: block;
  height: auto;
  margin: 24px auto;
  border-radius: 14px;
  box-shadow: 0 12px 34px rgba(42, 102, 145, 0.12);
}

.post-content blockquote {
  margin: 1.5em 0;
  padding: 16px 20px;
  color: #43586c;
  background: #f2f9ff;
  border-left: 4px solid var(--island-blue);
  border-radius: 0 12px 12px 0;
}

.post-content pre {
  position: relative;
  max-height: none;
  padding: 44px 20px 18px;
  color: #24384c;
  background: #f5f9fc;
  border: 1px solid #e1edf5;
  border-radius: 13px;
  box-shadow: inset 0 1px 2px rgba(22, 65, 96, 0.04);
}

.code-copy {
  position: absolute;
  top: 9px;
  right: 10px;
  min-width: 56px;
  padding: 5px 10px;
  color: var(--island-blue-deep);
  font-size: 12px;
  font-weight: 700;
  background: #fff;
  border: 1px solid var(--island-line);
  border-radius: 8px;
  cursor: pointer;
}

.post-content img.is-zoomable {
  cursor: zoom-in;
}

.post-content img.island-deferred-image:not(.is-loaded) {
  width: 100%;
  aspect-ratio: 16 / 9;
  background:
    linear-gradient(110deg, #edf7fd 8%, #f8fcff 18%, #edf7fd 33%);
  background-size: 220% 100%;
  animation: island-image-placeholder 1.4s linear infinite;
}

@keyframes island-image-placeholder {
  to {
    background-position-x: -220%;
  }
}

.post-content .hljs-comment {
  color: #5e7275;
}

.post-content .hljs-keyword,
.post-content .hljs-selector-tag,
.post-content .hljs-title {
  color: #005f63;
}

.post-content .hljs-number,
.post-content .hljs-literal {
  color: #67582f;
}

.post-content .hljs-variable,
.post-content .hljs-symbol,
.post-content .hljs-regexp {
  color: #005f63;
}

.post-content .hljs-params,
.post-content .hljs-attribute {
  color: #526600;
}

.article-lightbox {
  width: min(1100px, calc(100% - 32px));
  max-width: none;
  height: min(88vh, 850px);
  padding: 52px 20px 20px;
  color: #fff;
  background: rgba(8, 24, 39, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 18px;
  box-shadow: 0 28px 90px rgba(0, 20, 40, 0.42);
}

.article-lightbox::backdrop {
  background: rgba(5, 18, 30, 0.72);
  backdrop-filter: blur(10px);
}

.article-lightbox img {
  display: block;
  width: 100%;
  height: calc(100% - 34px);
  object-fit: contain;
}

.lightbox-close {
  position: absolute;
  top: 10px;
  right: 12px;
  width: 36px;
  height: 36px;
  color: #fff;
  font-size: 26px;
  line-height: 1;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 50%;
  cursor: pointer;
}

.lightbox-caption {
  margin: 8px 0 0;
  overflow: hidden;
  text-align: center;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.post-content code {
  font-family: "Cascadia Code", "JetBrains Mono", Consolas, monospace;
}

.post-content :not(pre) > code {
  padding: 0.18em 0.42em;
  color: #b13b55;
  background: #fff1f4;
  border-radius: 5px;
}

.post-content table {
  display: block;
  width: 100%;
  overflow-x: auto;
  border-collapse: collapse;
}

.post-content th,
.post-content td {
  padding: 10px 13px;
  border: 1px solid #dceaf3;
}

.post-content th {
  background: #edf8ff;
}

.tags {
  padding-top: 18px;
  border-top: 1px solid var(--island-line);
}

.post-near {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  padding-top: 20px;
  border-top: 1px solid var(--island-line);
}

.post-near > div {
  min-width: 0;
  padding: 14px 16px;
  background: rgba(243, 250, 255, 0.72);
  border: 1px solid var(--island-line);
  border-radius: 12px;
}

.post-near > div > span {
  display: block;
  margin-bottom: 3px;
  color: var(--island-muted);
  font-size: 12px;
}

.post-near-right {
  text-align: right;
}

#comments {
  margin-top: 38px;
  padding-top: 28px;
  border-top: 1px solid var(--island-line);
}

.comment-list li {
  border-color: var(--island-line);
  border-radius: 12px;
}

#comment-form input,
#comment-form textarea {
  width: 100%;
  padding: 11px 13px;
  background: rgba(249, 252, 255, 0.95);
  border: 1px solid #dbeaf4;
  border-radius: 10px;
}

#comment-form textarea {
  resize: vertical;
}

.comment-privacy {
  color: var(--island-muted);
  font-size: 13px;
}

.blog_btn:disabled {
  cursor: wait;
  opacity: 0.68;
  transform: none;
}

.island-back-to-top {
  position: fixed;
  z-index: 90;
  right: clamp(16px, 3vw, 38px);
  bottom: clamp(18px, 4vw, 42px);
  width: 46px;
  height: 46px;
  color: #fff;
  font-size: 23px;
  background: linear-gradient(135deg, var(--island-blue), #55c8ff);
  border: 0;
  border-radius: 50%;
  box-shadow: 0 12px 28px rgba(35, 170, 255, 0.3);
  cursor: pointer;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.island-back-to-top[hidden] {
  display: none;
}

.island-back-to-top.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.archive-hub {
  width: min(960px, calc(100% - 32px));
}

.archive-hub-heading {
  margin-bottom: 30px;
  text-align: center;
}

.archive-kicker {
  margin-bottom: 6px;
  color: var(--island-blue-deep);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.16em;
}

.archive-hub-heading > p:last-child {
  color: var(--island-muted);
}

.archive-filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 38px;
}

.archive-filters button {
  padding: 8px 14px;
  color: var(--island-blue-deep);
  background: #f3faff;
  border: 1px solid var(--island-line);
  border-radius: 999px;
  cursor: pointer;
}

.archive-filters button.is-active {
  color: #fff;
  background: var(--island-blue-deep);
  border-color: var(--island-blue-deep);
}

.archive-year {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 22px;
  padding: 24px 0;
  border-top: 1px solid var(--island-line);
}

.archive-year > h2 {
  color: var(--island-blue);
  font-size: 28px;
  font-weight: 300;
}

.archive-entry {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 16px;
  padding: 13px 0;
}

.archive-entry[hidden],
.archive-year[hidden] {
  display: none;
}

.archive-entry time {
  color: var(--island-muted);
  font-size: 13px;
}

.archive-entry h3 {
  margin: 0;
  font-size: 17px;
  line-height: 1.5;
}

.archive-entry p {
  margin: 3px 0 0;
  color: var(--island-muted);
  font-size: 12px;
}

.archive-entry p a {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 5px 8px;
  margin: 3px 5px 3px -8px;
  border-radius: 7px;
}

.archive-page-copy:empty {
  display: none;
}

.post_item.type_link {
  border: 1px solid var(--island-line);
  border-radius: 14px;
  box-shadow: 0 8px 24px rgba(42, 102, 145, 0.08);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.post_item.type_link:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 34px rgba(42, 102, 145, 0.15);
}

.link_item_img {
  object-fit: cover;
  border-radius: 12px;
}

.site-footer {
  color: var(--island-muted);
  background: rgba(242, 249, 255, 0.76);
  border-top: 1px solid var(--island-line);
}

.site-footer a {
  color: var(--island-blue-deep);
}

.ftr_logo img {
  width: 151px;
  height: auto;
}

.error-page-modern {
  width: min(680px, calc(100% - 32px));
  margin: 150px auto 90px;
  padding: clamp(32px, 6vw, 64px);
  text-align: center;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--island-line);
  border-radius: 24px;
  box-shadow: var(--island-shadow);
}

.error-code {
  color: var(--island-blue);
  font-size: clamp(76px, 18vw, 150px);
  line-height: 1;
}

.error-page-modern h1 {
  margin: 12px 0;
  font-size: clamp(24px, 5vw, 38px);
}

.error-page-modern > p {
  margin-bottom: 24px;
  color: var(--island-muted);
}

.error_form {
  justify-content: center;
  margin: 28px 0;
}

@media (max-width: 980px) {
  #content .wrap .content-area .site-main .news_list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .search input[type="search"] {
    width: 150px;
  }

  header#masthead .navigation-top .hdr_menu {
    gap: 20px;
  }

  .article-grid {
    grid-template-columns: 1fr;
  }

  .article-toc-panel {
    position: static;
    grid-row: 1;
    max-height: none;
  }

  #articleToc a {
    white-space: normal;
  }
}

@media (max-width: 900px) {
  .island-particle {
    opacity: 0.55;
  }

  #content {
    padding: 0 16px;
  }

  .island_top_banner_sp {
    aspect-ratio: 1.45 / 1;
    margin-top: 0;
    overflow: hidden;
    background: #eaf7ff;
  }

  .island_top_banner_sp img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
  }

  #content .wrap .page-header {
    margin: 52px 0 42px;
  }

  header#masthead {
    background-color: rgba(9, 84, 134, 0.94);
    background-blend-mode: multiply;
    backdrop-filter: blur(12px);
  }

  header#masthead .navigation-top .hdr_menu {
    display: block;
    height: auto;
    padding: 72px 24px 40px;
  }

  header#masthead .navigation-top .hdr_menu li {
    margin-bottom: 28px;
  }

  .search_box {
    margin-left: 0 !important;
  }

  .search {
    justify-content: center;
  }

  .search input[type="search"],
  .search input[type="search"]:focus {
    width: min(260px, 65vw);
  }

  #menu_btn {
    padding: 16px 18px 0 0;
  }

  #menu_btn button {
    width: 38px;
    height: 38px;
    padding: 5px 2px;
    background: transparent;
    border: 0;
    cursor: pointer;
  }

  #menu_btn span {
    margin-bottom: 8px;
  }

  #menu_btn.close span:nth-child(1) {
    transform: translateY(10px) rotate(45deg);
  }

  #menu_btn.close span:nth-child(3) {
    transform: translateY(-10px) rotate(-45deg);
  }

  #content .wrap .content-area .site-main .news_cell {
    width: auto;
    padding: 0;
    margin: 0;
  }

  #content .wrap .content-area .site-main .news_cell .top_area {
    margin: 0;
  }

  .post_body,
  .post_body.type_page {
    width: calc(100% - 32px);
    margin: 100px 16px 54px;
    padding: 24px;
    border-radius: 18px;
  }
}

@media (max-width: 620px) {
  #content .wrap .content-area .site-main .news_list {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  #content .wrap .content-area .site-main .news_cell .info_area {
    padding: 18px;
  }

  .island_top_banner_sp {
    aspect-ratio: 1.12 / 1;
  }

  .post-title {
    font-size: 27px;
  }

  .post-content {
    font-size: 15px;
  }

  .post-meta li {
    display: block;
    padding: 0;
  }

  .post-near-left,
  .post-near-right {
    max-width: 100%;
    margin: 8px 0;
    text-align: left;
  }

  .post-near {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .archive-year {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .page_link_body .post_item.type_link {
    width: 100%;
  }

  .error-page-modern {
    margin-top: 100px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }

  #bg_can {
    display: none;
  }
}