/* イロハ 教室ブログ投稿アプリ  モノトーン基調（HPに合わせて白黒） */
:root {
  --ink: #1b1b1b;
  --ink-soft: #4a4a4a;
  --mute: #717171;
  --line: #e2e2df;
  --paper: #ffffff;
  --ground: #f5f5f2;
  --accent: #1b1b1b;
  --warn-bg: #fff6e0;
  --warn-line: #e6b422;
  --ok: #1f7a4d;
  --err: #b3261e;
  --radius: 10px;
  --font: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic UI", "Yu Gothic", "Noto Sans JP", Meiryo, sans-serif;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--ground); color: var(--ink);
  font-family: var(--font); font-size: 16px; line-height: 1.75;
}
a { color: inherit; }
img { max-width: 100%; height: auto; }
h1, h2, h3 { line-height: 1.4; margin: 0; }

.wrap { max-width: 720px; margin: 0 auto; padding: 20px 16px 64px; display: flex; flex-direction: column; gap: 16px; }
.wrap-wide { max-width: 1040px; }

/* トップバー */
.topbar { background: var(--ink); color: #fff; position: sticky; top: 0; z-index: 5; }
.topbar-in { max-width: 1040px; margin: 0 auto; padding: 10px 16px; display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.topbar-title { font-weight: 700; }
.topbar-link { color: #fff; text-decoration: none; padding: 6px 2px; font-size: 14px; }
.topbar-nav { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }
.topbar-nav a { color: #fff; text-decoration: none; font-size: 14px; padding: 6px 2px; border-bottom: 2px solid transparent; }
.topbar-nav a.is-on { border-bottom-color: #fff; }

.eyebrow { font-size: 13px; letter-spacing: .2em; color: var(--mute); margin: 0; }
.section-title { font-size: 20px; margin-top: 8px; }
.muted { color: var(--mute); }
.small { font-size: 13px; }
.center { text-align: center; }
.pre { white-space: pre-wrap; word-break: break-word; }
.stack { display: flex; flex-direction: column; gap: 18px; }

/* フォーム */
.field { display: flex; flex-direction: column; gap: 6px; }
.field label, .field .label { font-weight: 700; font-size: 15px; }
.req { font-size: 11px; font-weight: 700; color: #fff; background: var(--err); border-radius: 4px; padding: 1px 6px; margin-left: 4px; vertical-align: 1px; }
.hint { font-size: 13px; color: var(--mute); }
.input {
  width: 100%; font: inherit; font-size: 16px; /* 16px未満だとiPhoneで拡大される */
  padding: 12px; border: 1px solid #c9c9c4; border-radius: var(--radius); background: var(--paper); color: var(--ink);
}
.input:focus, .btn:focus-visible, a:focus-visible { outline: 3px solid #8ab4f8; outline-offset: 1px; }
.input-title { font-weight: 700; font-size: 18px; }
.input-date { max-width: 240px; }
textarea.input { resize: vertical; min-height: 200px; line-height: 1.7; }

.checks { border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); padding: 12px 14px; margin: 0; display: flex; flex-direction: column; gap: 14px; }
.checks legend { font-weight: 700; padding: 0 6px; }
.check { display: flex; gap: 12px; align-items: flex-start; cursor: pointer; }
.check input { width: 26px; height: 26px; margin-top: 3px; flex: none; accent-color: var(--ink); }
.check span { font-size: 15px; line-height: 1.65; }

/* ボタン */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  font: inherit; font-weight: 700; font-size: 16px; text-decoration: none; cursor: pointer;
  min-height: 46px; padding: 10px 18px; border-radius: var(--radius); border: 1px solid var(--ink);
  background: var(--paper); color: var(--ink);
}
.btn-primary { background: var(--ink); color: #fff; }
.btn-ghost { background: var(--paper); }
.btn-danger { background: var(--paper); color: var(--err); border-color: var(--err); }
.btn-ok { background: var(--ok); border-color: var(--ok); color: #fff; }
.btn-block { width: 100%; }
.btn-lg { min-height: 54px; font-size: 17px; }
.btn-sm { min-height: 38px; padding: 6px 14px; font-size: 14px; }
.btn:disabled { opacity: .5; cursor: default; }
.btn-file { align-self: flex-start; }
.btn-row { display: flex; gap: 10px; flex-wrap: wrap; }

/* 通知 */
.flash { border-radius: var(--radius); padding: 12px 14px; background: #e8f4ec; border: 1px solid #b7dcc6; color: #14532d; }
.flash-err { background: #fdecea; border-color: #f1b7b2; color: #7a1a14; }
.callout { border-radius: var(--radius); padding: 12px 14px; background: var(--paper); border: 1px solid var(--line); margin-top: 8px; }
.callout-warn { background: var(--warn-bg); border-color: var(--warn-line); }

/* ログイン */
.login-card { background: var(--paper); border-radius: 14px; padding: 28px 22px; margin-top: 8vh; display: flex; flex-direction: column; gap: 16px; border: 1px solid var(--line); }
.login-card h1 { font-size: 24px; }

/* 一覧 */
.list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.list-item { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; display: flex; flex-direction: column; gap: 6px; align-items: flex-start; }
.list-item > .callout { align-self: stretch; }
.list-head { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.list-title { font-weight: 700; word-break: break-word; }

.pill { display: inline-block; font-size: 12px; font-weight: 700; padding: 2px 10px; border-radius: 999px; border: 1px solid; }
.pill-pending { background: #fff4d6; color: #7a5b00; border-color: #e6c15a; }
.pill-revision { background: #fdecea; color: #9b1c14; border-color: #f0a9a3; }
.pill-published { background: #e5f4ea; color: #14683d; border-color: #9ed3b3; }
.pill-withdrawn { background: #eee; color: #555; border-color: #ccc; }

/* 写真 */
.thumbs { display: flex; flex-wrap: wrap; gap: 8px; }
.thumbs:empty { display: none; }
.thumb { position: relative; width: 96px; height: 96px; border-radius: 8px; overflow: hidden; background: #ddd; display: block; }
.thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.thumb-x { position: absolute; top: 4px; right: 4px; width: 28px; height: 28px; border-radius: 50%; border: 0; background: rgba(0,0,0,.72); color: #fff; font-size: 18px; line-height: 1; cursor: pointer; }
.thumb-del { position: absolute; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,.7); color: #fff; font-size: 12px; text-align: center; padding: 2px 0; }
.thumb.is-removed img { opacity: .25; }

/* 送信中 */
.overlay { position: fixed; inset: 0; background: rgba(255,255,255,.88); display: flex; align-items: center; justify-content: center; z-index: 50; }
.overlay[hidden] { display: none; }
.overlay-box { display: flex; flex-direction: column; align-items: center; gap: 14px; font-weight: 700; padding: 24px; text-align: center; }
.spinner { width: 36px; height: 36px; border-radius: 50%; border: 4px solid #ccc; border-top-color: var(--ink); animation: spin .9s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .spinner { animation-duration: 3s; } }

/* ブログ表示（公開ページ・確認画面） */
.post { background: var(--paper); border: 1px solid var(--line); border-radius: 12px; padding: 20px 18px; display: flex; flex-direction: column; gap: 10px; }
.post-meta { font-size: 13px; color: var(--mute); }
.post-title { font-size: 21px; font-weight: 800; word-break: break-word; }
.post-body { word-break: break-word; line-height: 1.85; }
.post-photos { display: grid; gap: 6px; grid-template-columns: repeat(2, 1fr); margin-top: 6px; }
.post-photos a { display: block; aspect-ratio: 4 / 3; overflow: hidden; border-radius: 8px; background: #ddd; }
.post-photos img { width: 100%; height: 100%; object-fit: cover; display: block; }
.post-photos.n1 { grid-template-columns: 1fr; }
.post-photos.n1 a { aspect-ratio: auto; max-height: 480px; }
.post-photos.n1 img { object-fit: contain; }
@media (min-width: 600px) { .post-photos.n3, .post-photos.n4 { grid-template-columns: repeat(3, 1fr); } }

.blog-head { text-align: center; padding: 8px 0 4px; display: flex; flex-direction: column; gap: 6px; }
.blog-head h1 { font-size: 24px; }
.branch-links { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.branch-links a { display: flex; justify-content: space-between; align-items: center; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; text-decoration: none; font-weight: 700; }
.pager { display: flex; justify-content: center; gap: 10px; }

/* 管理画面 */
.tabs { display: flex; gap: 8px; flex-wrap: wrap; }
.tab { text-decoration: none; padding: 8px 14px; border-radius: 999px; border: 1px solid var(--line); background: var(--paper); font-size: 14px; font-weight: 700; }
.tab.is-on { background: var(--ink); color: #fff; border-color: var(--ink); }
.tab .n { opacity: .65; margin-left: 4px; }
.panel { background: var(--paper); border: 1px solid var(--line); border-radius: 12px; padding: 16px; display: flex; flex-direction: column; gap: 14px; }
.panel h2 { font-size: 17px; }
.kv { display: grid; grid-template-columns: 7em 1fr; gap: 4px 10px; font-size: 14px; }
.kv dt { color: var(--mute); }
.kv dd { margin: 0; word-break: break-word; }
.timeline { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; font-size: 14px; }
.timeline li { border-left: 3px solid var(--line); padding-left: 10px; }
.two-col { display: grid; gap: 16px; }
@media (min-width: 900px) { .two-col { grid-template-columns: 1.3fr 1fr; align-items: start; } }
.inline-form { display: flex; gap: 8px; flex-wrap: wrap; align-items: flex-end; }
.inline-form .field { flex: 1 1 160px; }
.table-scroll { overflow-x: auto; }
table.tbl { border-collapse: collapse; width: 100%; font-size: 14px; }
table.tbl th, table.tbl td { border-bottom: 1px solid var(--line); padding: 8px 6px; text-align: left; vertical-align: top; }
.row-card { border: 1px solid var(--line); border-radius: var(--radius); padding: 12px; display: flex; flex-direction: column; gap: 10px; }
.row-card.is-off { opacity: .6; background: #fafafa; }
.grid-form { display: grid; gap: 10px; grid-template-columns: 1fr; }
@media (min-width: 700px) { .grid-form { grid-template-columns: repeat(2, 1fr); } }
code.k { background: #eee; padding: 1px 6px; border-radius: 4px; font-size: 13px; word-break: break-all; }

/* すべてのページ上部のロゴ */
.brandbar { background: #ffffff; border-bottom: 1px solid var(--line); }
.brandbar a { display: flex; max-width: 1040px; margin: 0 auto; padding: 8px 16px; }
.brandbar img { height: 46px; width: auto; display: block; }
.brandbar-big a { justify-content: center; padding: 22px 16px 10px; }
.brandbar-big img { height: 76px; }
.brandbar-big { border-bottom: 0; }
.login-card { margin-top: 3vh; }

/* 本文エディタ（装飾ボタン＋本文）と、公開表示の共通スタイル */
:root { --rc-red: #d32f2f; --rc-blue: #1565c0; --rc-green: #2e7d32; --rc-orange: #ef6c00; --rc-pink: #d81b60; --rc-gray: #757575; --link: #1a5fb4; }
.tbwrap { position: sticky; top: var(--topbar-h, 56px); z-index: 3; background: var(--paper); border: 1px solid #c9c9c4; border-bottom: 0; border-radius: 10px 10px 0 0; }
.tb { display: flex; flex-wrap: nowrap; gap: 6px 14px; padding: 8px; overflow-x: auto; scrollbar-width: thin; }
@media (min-width: 700px) { .tb { flex-wrap: wrap; overflow-x: visible; } }
.tg { display: flex; gap: 4px; align-items: center; flex: none; }
.tg .tl { font-size: 12px; color: var(--mute); margin-right: 2px; }
.tbb { min-width: 40px; min-height: 40px; padding: 0 10px; border: 1px solid #c9c9c4; border-radius: 8px; background: var(--paper); color: var(--ink); font: inherit; font-size: 14px; font-weight: 700; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; white-space: nowrap; }
.tbb.on { background: var(--ink); color: #fff; border-color: var(--ink); }
.tbb.photo { background: var(--ink); color: #fff; border-color: var(--ink); }
.tbb:focus-visible, .sw:focus-visible { outline: 3px solid #8ab4f8; outline-offset: 1px; }
.sw { width: 32px; height: 32px; border-radius: 50%; border: 2px solid var(--paper); box-shadow: 0 0 0 1px #c9c9c4; cursor: pointer; padding: 0; flex: none; }
.sw.reset { background: var(--paper); color: var(--ink); font: inherit; font-size: 11px; font-weight: 700; width: auto; border-radius: 16px; padding: 0 10px; height: 32px; white-space: nowrap; }
.linkrow { padding: 0 8px 8px; flex-wrap: nowrap; }
.linkrow[hidden] { display: none; }
.linkrow .input { flex: 1 1 200px; padding: 8px 10px; }
.editor { position: relative; min-height: 240px; padding: 12px; border: 1px solid #c9c9c4; border-radius: 0 0 10px 10px; background: var(--paper); line-height: 1.8; overflow-wrap: anywhere; }
.editor:focus { outline: 3px solid #8ab4f8; outline-offset: -1px; }
.editor.empty::before { content: attr(data-ph); position: absolute; left: 12px; top: 12px; right: 12px; color: var(--mute); pointer-events: none; }
.rt { overflow-wrap: anywhere; }
.rt figure.ph { display: block; position: relative; width: fit-content; max-width: 100%; margin: 10px auto; }
.rt figure.ph img { display: block; max-width: 100%; max-height: 520px; height: auto; border-radius: 8px; }
.rt .ph-x { position: absolute; top: 6px; right: 6px; width: 30px; height: 30px; border-radius: 50%; border: 0; background: rgba(0,0,0,.72); color: #fff; cursor: pointer; line-height: 1; font-size: 18px; }
.rt .al-c { text-align: center; }
.rt .s-sm { font-size: .85em; } .rt .s-lg { font-size: 1.3em; } .rt .s-xl { font-size: 1.7em; }
.rt .c-red { color: var(--rc-red); } .rt .c-blue { color: var(--rc-blue); } .rt .c-green { color: var(--rc-green); }
.rt .c-orange { color: var(--rc-orange); } .rt .c-pink { color: var(--rc-pink); } .rt .c-gray { color: var(--rc-gray); }
.rt a { color: var(--link); text-decoration: underline; }
[hidden] { display: none !important; }

/* ---- 公開ブログのヘッダー：HPのヘッダーと同じ寸法・同じ文字（Noto Sans JP） ---- */
.sh, .sh-mnav { font-family: "Noto Sans JP", system-ui, -apple-system, "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif; }
.sh { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.82); -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px); border-bottom: 1px solid rgba(20,66,64,.08); }
.sh-in { max-width: 1360px; margin: 0 auto; padding: 0 32px; height: 88px; display: flex; align-items: center; justify-content: space-between; }
.sh-logo { display: flex; flex: none; }
.sh-logo img { height: 52px; width: auto; display: block; }
.sh-links { display: flex; align-items: center; gap: 0; }
.sh-links a { font-size: 15.5px; font-weight: 600; letter-spacing: .01em; color: #1C2B30; padding: 4px 18px; text-decoration: none; white-space: nowrap; line-height: 1.85; transition: color .15s; }
.sh-links a:hover, .sh-links a.is-here { color: #2f8e8d; }
.sh-links .sh-two { display: flex; flex-direction: column; line-height: 1.2; border-left: 1px solid rgba(95,192,191,.45); margin-left: 6px; padding: 4px 18px; }
.sh-two-sub { font-size: 11.5px; color: #1C2B30; opacity: .85; }
.sh-two-main { font-size: 15.5px; }
.sh-cta { display: flex; align-items: center; gap: 14px; }
.sh-btn { line-height: 1; display: inline-flex; align-items: center; justify-content: center; background: #2F9D9C; color: #fff; text-decoration: none; font-size: 14px; font-weight: 800; letter-spacing: .01em; padding: 12px 22px; border-radius: 6px; white-space: nowrap; }
.sh-btn:hover { background: #2f8e8d; }
.sh-burger { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 8px; }
.sh-burger i { display: block; width: 26px; height: 2.5px; background: #1C2B30; border-radius: 2px; }
.sh-mnav { display: none; position: fixed; inset: 0; z-index: 100; background: #fff; padding: 90px 28px 40px; overflow-y: auto; }
.sh-mnav.open { display: block; }
.sh-mnav > a { display: block; font-size: 19px; font-weight: 800; color: #1C2B30; text-decoration: none; padding: 17px 0; border-bottom: 1px solid rgba(20,66,64,.1); }
.sh-mnav > a.sh-mnav-btn { background: #2F9D9C; color: #1C2B30; text-align: center; border-bottom: 0; border-radius: 8px; margin-top: 24px; padding: 15px 0; }
.sh-x { position: absolute; top: 18px; right: 24px; background: none; border: 0; font-size: 34px; line-height: 1; color: #1C2B30; cursor: pointer; padding: 6px 10px; }
.sh-mnav-foot { margin-top: 28px; padding-top: 20px; border-top: 1px solid rgba(20,66,64,.1); display: flex; flex-direction: column; gap: 14px; }
.sh-mnav-foot a { font-size: 12px; color: #6f7f86; text-decoration: underline; }
@media (max-width: 1000px) { .sh-links { display: none; } .sh-burger { display: flex; } }
@media (max-width: 640px) { .sh-in { height: 56px; } .sh-logo img { height: 28px; } }

/* ---- 公開ブログ：記事一覧（新着順）＋ 右側のアーカイブ・ほかの教室 ---- */
.blog-layout { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 24px; align-items: start; }
.blog-main { display: flex; flex-direction: column; gap: 14px; min-width: 0; }
.list-heading { font-size: 17px; border-left: 4px solid #5fc0bf; padding-left: 10px; }
.post-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.post-row { display: flex; align-items: center; gap: 14px; background: var(--paper); border: 1px solid var(--line); border-radius: 12px; padding: 10px; text-decoration: none; color: inherit; }
.post-row:hover { border-color: #5fc0bf; box-shadow: 0 2px 10px rgba(0,0,0,.06); }
.post-thumb { flex: none; width: 128px; height: 96px; border-radius: 8px; overflow: hidden; background: #e8efee; display: flex; align-items: center; justify-content: center; }
.post-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.post-thumb-none { font-size: 11px; letter-spacing: .08em; color: #8da3a2; font-weight: 700; }
.post-row-text { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 4px; }
.post-row-date { font-size: 13px; color: var(--mute); }
.post-row-title { font-size: 17px; font-weight: 800; line-height: 1.5; overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; word-break: break-word; }
.post-row-arrow { flex: none; font-size: 24px; color: #5fc0bf; padding-right: 4px; }
.back-row { margin: 0; font-size: 14px; }
.back-row a { color: var(--ink-soft); text-decoration: none; font-weight: 700; }
.pager-split { justify-content: space-between; }
.blog-side { display: flex; flex-direction: column; gap: 16px; position: sticky; top: 104px; }
.side-box { background: var(--paper); border: 1px solid var(--line); border-radius: 12px; padding: 14px; display: flex; flex-direction: column; gap: 4px; }
.side-title { font-size: 15px; margin-bottom: 6px; padding-bottom: 8px; border-bottom: 2px solid #5fc0bf; }
.arch-year { font-size: 13px; font-weight: 800; color: var(--ink-soft); margin-top: 8px; }
.arch-link { display: flex; justify-content: space-between; align-items: center; padding: 8px 6px; border-radius: 8px; text-decoration: none; font-size: 15px; }
.arch-link:hover { background: #f1f7f6; }
.arch-link.is-on { background: #e3f3f2; font-weight: 800; }
.arch-all { margin-top: 6px; color: #2f8e8d; font-weight: 700; }
.side-btn { display: block; text-align: center; background: #339c9a; color: #fff; text-decoration: none; font-weight: 700; padding: 13px 10px; border-radius: 10px; margin-top: 4px; }
.side-btn:hover { background: #2f8e8d; }
@media (max-width: 860px) {
  .blog-layout { grid-template-columns: 1fr; }
  .blog-side { position: static; }
}
@media (max-width: 480px) {
  .post-thumb { width: 96px; height: 72px; }
  .post-row-title { font-size: 16px; }
}

/* ---- ブログのタイトル（教室名を大きく・ブランドカラー） ---- */
.blog-head h1.blog-title { font-size: inherit; line-height: 1.25; display: flex; justify-content: center; align-items: baseline; flex-wrap: wrap; column-gap: .15em; }
.bt-name { font-size: 44px; font-weight: 900; color: #5FC0BF; letter-spacing: .02em; }
.bt-suffix { font-size: 28px; font-weight: 800; color: var(--ink); }
@media (max-width: 480px) { .bt-name { font-size: 32px; } .bt-suffix { font-size: 21px; } }

/* ---- 記事の下：1つ前の記事 / 次の記事（題名つき） ---- */
.pn-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.pn { display: flex; flex-direction: column; gap: 4px; background: var(--paper); border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; text-decoration: none; color: inherit; min-width: 0; }
.pn:hover { border-color: #5fc0bf; }
.pn small { font-size: 12px; font-weight: 800; color: #2f8e8d; }
.pn span { font-size: 15px; font-weight: 700; line-height: 1.5; overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; word-break: break-word; }
.pn-next { text-align: right; grid-column: 2; }
.pn-prev { grid-column: 1; }
@media (max-width: 560px) { .pn-nav { grid-template-columns: 1fr; } .pn-next, .pn-prev { grid-column: 1; text-align: left; } .pn-nav > span:empty { display: none; } }
.side-btn { font-size: 14px; line-height: 1.5; }

/* ---- 公開ブログの背景：うすいミント＋ゆっくり動くドット ---- */
body.bg-dots { background: #EEF8F6; }
body.bg-dots::before, body.bg-dots::after { content: ""; position: fixed; left: 0; right: 0; top: -560px; bottom: 0; z-index: -1; pointer-events: none; will-change: transform; }
body.bg-dots::before { background-image: url("data:image/svg+xml,%3Csvg xmlns=%22http://www.w3.org/2000/svg%22 width=%22400%22 height=%22400%22%3E%3Ccircle cx=%2255%22 cy=%2270%22 r=%2222%22 fill=%22%235FC0BF%22 fill-opacity=%22.10%22/%3E%3Ccircle cx=%22240%22 cy=%2240%22 r=%2213%22 fill=%22%23F7C948%22 fill-opacity=%22.14%22/%3E%3Ccircle cx=%22345%22 cy=%22150%22 r=%2226%22 fill=%22%235FC0BF%22 fill-opacity=%22.08%22/%3E%3Ccircle cx=%22140%22 cy=%22205%22 r=%2215%22 fill=%22%23F4A6B5%22 fill-opacity=%22.14%22/%3E%3Ccircle cx=%22300%22 cy=%22305%22 r=%2220%22 fill=%22%235FC0BF%22 fill-opacity=%22.10%22/%3E%3Ccircle cx=%2270%22 cy=%22335%22 r=%2228%22 fill=%22%23F7C948%22 fill-opacity=%22.09%22/%3E%3Ccircle cx=%22195%22 cy=%22370%22 r=%2210%22 fill=%22%235FC0BF%22 fill-opacity=%22.13%22/%3E%3C/svg%3E"); background-size: 400px 400px; animation: bgdrift1 70s linear infinite; }
body.bg-dots::after  { background-image: url("data:image/svg+xml,%3Csvg xmlns=%22http://www.w3.org/2000/svg%22 width=%22560%22 height=%22560%22%3E%3Ccircle cx=%2290%22 cy=%22130%22 r=%2238%22 fill=%22%235FC0BF%22 fill-opacity=%22.055%22/%3E%3Ccircle cx=%22390%22 cy=%2275%22 r=%2224%22 fill=%22%23F4A6B5%22 fill-opacity=%22.09%22/%3E%3Ccircle cx=%22490%22 cy=%22320%22 r=%2242%22 fill=%22%23F7C948%22 fill-opacity=%22.06%22/%3E%3Ccircle cx=%22220%22 cy=%22390%22 r=%2228%22 fill=%22%235FC0BF%22 fill-opacity=%22.07%22/%3E%3Ccircle cx=%2260%22 cy=%22490%22 r=%2220%22 fill=%22%23F4A6B5%22 fill-opacity=%22.10%22/%3E%3C/svg%3E"); background-size: 560px 560px; animation: bgdrift2 110s linear infinite; }
@keyframes bgdrift1 { from { transform: translate(0, -400px); } to { transform: translate(0, 0); } }
@keyframes bgdrift2 { from { transform: translate(0, 0); } to { transform: translate(0, -560px); } }
@media (prefers-reduced-motion: reduce) { body.bg-dots::before, body.bg-dots::after { animation: none; } }

/* ---- タイトルのバランス：記事の列の真上に来るよう中央寄せ、「のブログ」との間隔を広げる ---- */
.blog-head { padding: 22px 0 8px; }
.blog-head h1.blog-title { column-gap: 0; }
.bt-suffix { margin-left: .6em; }
@media (min-width: 861px) { .blog-head { padding-right: 304px; } }