/* ===== 森瑞实验室 · 文章页 / 专辑页（UI 重设计 2026-08-15） ===== */

/* ---------- 文章阅读布局 ---------- */
.article-page { max-width: 1080px; margin: 0 auto; padding: 30px 22px 64px; }
.article-grid { display: grid; grid-template-columns: minmax(0, 720px); justify-content: center; gap: 36px; align-items: start; }
.article-grid.has-toc { grid-template-columns: minmax(0, 720px) 240px; }
.article-wrap { min-width: 0; }

/* ---------- 文章头部 ---------- */
.article-head { margin-bottom: 26px; padding-bottom: 22px; border-bottom: 1px solid var(--border); }
.article-kicker {
  display: inline-block; font-family: var(--mono); font-size: .72rem; font-weight: 700;
  letter-spacing: .12em; text-transform: uppercase;
  background: color-mix(in srgb, currentColor 12%, transparent);
  border: 1px solid color-mix(in srgb, currentColor 32%, transparent);
  border-radius: 999px; padding: 4px 12px; margin-bottom: 14px;
}
.article-head h1 {
  font-size: clamp(1.9rem, 1.4rem + 2vw, 2.7rem); font-weight: 800; line-height: 1.22;
  letter-spacing: -.02em; margin: 0 0 16px; color: var(--text);
}
.article-meta { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; font-size: .85rem; color: var(--muted); }
.article-meta .pill {
  font-family: var(--mono); font-size: .74rem; padding: 3px 11px; border-radius: 999px;
  background: var(--brand-light); color: var(--brand-dark); border: 1px solid color-mix(in srgb, var(--brand) 18%, transparent);
}
.article-meta .pill.kb { color: var(--brand-dark); }
.article-meta .pill.cur { color: #b45309; background: #fef3c7; border-color: #fde68a; }
.reader-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.reader-tags .art-tag {
  font-family: var(--mono); font-size: .74rem; padding: 4px 12px; border-radius: 999px;
  color: var(--brand-dark); background: var(--brand-light); border: 1px solid color-mix(in srgb, var(--brand) 22%, transparent);
}

/* ---------- 导语 ---------- */
.article-lede {
  display: flex; gap: 12px; align-items: flex-start;
  background: linear-gradient(180deg, var(--brand-light), color-mix(in srgb, var(--brand-light) 38%, #fff));
  border: 1px solid color-mix(in srgb, var(--brand) 22%, transparent);
  border-left: 4px solid var(--brand);
  border-radius: 12px; padding: 14px 18px; margin: 0 0 28px;
}
.article-lede .lede-label { font-family: var(--mono); font-size: .72rem; color: var(--brand); font-weight: 700; padding-top: 3px; white-space: nowrap; letter-spacing: .1em; }
.article-lede p { color: var(--muted); font-size: .98rem; line-height: 1.75; margin: 0; }

/* ---------- 正文排版 ---------- */
.article-body { font-size: 1.04rem; color: var(--text); line-height: 1.9; }
.article-body h2, .article-body h3 { scroll-margin-top: 86px; }
.article-body h2 { position: relative; font-size: 1.5rem; font-weight: 800; margin: 40px 0 16px; padding-left: 15px; line-height: 1.35; }
.article-body h2::before { content: ''; position: absolute; left: 0; top: .18em; bottom: .18em; width: 4px; border-radius: 2px; background: var(--brand); }
.article-body h3 { font-size: 1.2rem; font-weight: 700; margin: 30px 0 12px; color: var(--brand-dark); }
.article-body h4 { font-size: 1.04rem; font-weight: 700; margin: 22px 0 8px; }
.article-body p { margin: 16px 0; }
.article-body strong { color: var(--text); font-weight: 700; }
.article-body ul, .article-body ol { margin: 16px 0; padding-left: 28px; }
.article-body ul { list-style: disc; }
.article-body ol { list-style: decimal; }
.article-body li { margin: 8px 0; line-height: 1.8; }
.article-body li::marker { color: var(--brand); }
.article-body a { color: var(--brand); text-decoration: underline; text-underline-offset: 3px; text-decoration-color: color-mix(in srgb, var(--brand) 40%, transparent); }
.article-body a:hover { text-decoration-color: var(--brand); }
.article-body blockquote {
  margin: 22px 0; padding: 14px 20px; border-left: 4px solid var(--brand);
  background: linear-gradient(90deg, var(--brand-light), transparent);
  border-radius: 0 12px 12px 0; color: var(--muted); font-style: italic;
}
.article-body blockquote p { margin: 6px 0; }
.article-body :not(pre) > code {
  font-family: var(--mono); font-size: .88em; background: var(--brand-light);
  color: var(--brand-dark); padding: 2px 7px; border-radius: 6px; border: 1px solid color-mix(in srgb, var(--brand) 16%, transparent);
}
.article-body pre {
  background: #0f172a; color: #e2e8f0; padding: 18px 20px; border-radius: 14px;
  overflow-x: auto; margin: 22px 0; font-family: var(--mono); font-size: .86rem; line-height: 1.6;
  border: 1px solid #1e293b; box-shadow: var(--shadow-md);
}
.article-body pre code { background: none; color: inherit; padding: 0; border: 0; }
.article-body table { width: 100%; border-collapse: collapse; margin: 24px 0; font-size: .92rem; overflow: hidden; border-radius: 12px; box-shadow: var(--shadow-sm); border: 1px solid var(--border); }
.article-body th, .article-body td { border: 1px solid var(--border); padding: 11px 14px; text-align: left; }
.article-body th { background: var(--brand-light); color: var(--brand-dark); font-weight: 700; }
.article-body tr:nth-child(even) td { background: color-mix(in srgb, var(--brand-light) 45%, #fff); }
.article-body img { max-width: 100%; height: auto; border-radius: 12px; margin: 20px 0; border: 1px solid var(--border); box-shadow: var(--shadow-md); }
.article-body figure { margin: 22px 0; }
.article-body figcaption { text-align: center; font-size: .82rem; color: var(--muted); margin-top: 8px; }
.article-body hr { border: 0; border-top: 1px solid var(--border); margin: 32px 0; }

/* ---------- 上一篇 / 下一篇 ---------- */
.reader-nav { gap: 14px; }
.reader-nav a { border-radius: 12px; border-color: var(--border); }
.reader-nav a:hover { border-color: var(--brand); box-shadow: var(--shadow-sm); }

/* ---------- 本专辑其他文章 ---------- */
.article-related { margin-top: 40px; padding-top: 22px; border-top: 1px solid var(--border); }
.article-related h3 { font-size: 1rem; margin-bottom: 14px; color: var(--text); }
.article-related ul { list-style: none; display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 10px; }
.article-related a { display: block; padding: 11px 14px; border: 1px solid var(--border); border-radius: 10px; color: var(--muted); font-size: .9rem; text-decoration: none; background: var(--panel); transition: .2s; }
.article-related a:hover { color: var(--brand); border-color: var(--brand); transform: translateX(3px); }

/* ---------- 点赞 / 分享 ---------- */
.article-actions { display: flex; gap: .8rem; justify-content: center; margin: 2.4rem 0 1rem; padding-top: 1.6rem; border-top: 1px solid var(--border); }
.act-btn { display: inline-flex; align-items: center; gap: .45rem; font: inherit; font-size: .95rem; color: var(--text); background: var(--panel); border: 1px solid var(--border); border-radius: 999px; padding: .55rem 1.25rem; cursor: pointer; transition: .2s; }
.act-btn:hover { border-color: var(--brand); color: var(--brand); box-shadow: var(--shadow-sm); }
.act-btn svg { width: 18px; height: 18px; }
.act-btn.liked { color: #e11d48; border-color: #e11d48; background: rgba(225,29,72,.07); }

/* ---------- 阅读进度条 ---------- */
.reading-bar { position: fixed; top: 0; left: 0; height: 3px; width: 0; background: linear-gradient(90deg, var(--brand), #4f46e5); z-index: 1200; }

/* ---------- 目录侧栏（JS 注入，仅长文） ---------- */
.article-side { position: sticky; top: 92px; align-self: start; }
.toc-card { background: var(--panel); border: 1px solid var(--border); border-radius: 14px; padding: 16px 18px; max-height: calc(100vh - 120px); overflow: auto; box-shadow: var(--shadow-sm); }
.toc-card h4 { font-size: .72rem; text-transform: uppercase; letter-spacing: .14em; color: var(--muted); margin-bottom: 12px; display: flex; align-items: center; gap: 7px; }
.toc-card h4::before { content: ''; width: 14px; height: 2px; border-radius: 2px; background: var(--brand); }
.toc-card ul { list-style: none; display: flex; flex-direction: column; gap: 2px; font-size: .85rem; }
.toc-card a { color: var(--muted); text-decoration: none; display: block; padding: 5px 0; border-left: 2px solid transparent; padding-left: 10px; transition: .18s; }
.toc-card a:hover { color: var(--brand); border-left-color: var(--brand); }
.toc-card li.lvl3 a { padding-left: 24px; font-size: .82rem; }
.toc-card li.active > a { color: var(--brand); font-weight: 600; border-left-color: var(--brand); }

/* ---------- 返回顶部 ---------- */
.to-top { position: fixed; right: 22px; bottom: 26px; width: 42px; height: 42px; border-radius: 50%; border: 0; background: linear-gradient(135deg, var(--brand), #4f46e5); color: #fff; cursor: pointer; display: flex; align-items: center; justify-content: center; box-shadow: 0 6px 18px rgba(51,128,200,.35); opacity: 0; pointer-events: none; transition: opacity .3s ease, transform .3s ease; z-index: 900; }
.to-top svg { width: 18px; height: 18px; }
.to-top.show { opacity: 1; pointer-events: auto; }
.to-top:hover { transform: translateY(-2px); }

/* ---------- 专辑页 / 顶层索引（共享类，保持不变） ---------- */
.album-desc { color: var(--muted); line-height: 1.7; margin: 6px 0 14px; font-size: 1rem; }
.alb-stat { font-size: .82rem; color: var(--muted); font-family: var(--mono); }
a.art-card { text-decoration: none; color: inherit; display: flex; flex-direction: column; }
a.art-card .art-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
a.art-card .art-tag { font-size: .72rem; padding: 1px 8px; border-radius: 999px; background: var(--brand-light); color: var(--brand-dark); }
a.art-card .art-meta { display: flex; align-items: center; gap: 12px; font-size: .78rem; color: var(--muted); margin-top: auto; padding-top: 10px; }
a.art-card .art-meta .src { font-family: var(--mono); padding: 1px 8px; border-radius: 999px; background: #f1f5f9; }
a.art-card .art-meta .src.kb { color: var(--brand-dark); }
a.art-card .art-meta .src.cur { color: #b45309; background: #fef3c7; }
.top-mod { margin: 36px 0; }
.top-mod-head { display: flex; align-items: baseline; gap: 12px; border-bottom: 2px solid var(--border); padding-bottom: 8px; margin-bottom: 14px; flex-wrap: wrap; }
.top-mod-head h2 { font-size: 1.35rem; margin: 0; }
.top-mod-desc { font-size: .85rem; color: var(--muted); font-weight: 400; }
.top-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; margin-bottom: 12px; }
.top-arts { display: flex; flex-direction: column; gap: 2px; padding-left: 2px; }
a.art-sub { display: block; font-size: .86rem; color: var(--muted); text-decoration: none; padding: 5px 0 5px 12px; border-left: 2px solid var(--border); }
a.art-sub:hover { color: var(--brand); border-left-color: var(--brand); }
.rel-wrap { margin-top: 44px; padding-top: 22px; border-top: 1px solid var(--border); }
.rel-wrap h3 { font-size: 1rem; margin-bottom: 16px; color: var(--text); }
.rel-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 14px; }
a.rel-card { display: flex; flex-direction: column; gap: 6px; padding: 16px 18px; border: 1px solid var(--border); border-radius: 12px; background: var(--panel); transition: all .25s ease; text-decoration: none; color: inherit; }
a.rel-card:hover { transform: translateY(-3px); border-color: var(--brand); box-shadow: var(--shadow-md); }
.rel-mod { font-family: var(--mono); font-size: .72rem; letter-spacing: .08em; color: var(--brand); }
a.rel-card:hover h4 { color: var(--brand); }
a.rel-card h4 { font-size: .98rem; font-weight: 700; line-height: 1.4; color: var(--text); }
.rel-count { font-size: .76rem; color: var(--muted); }

/* ---------- 响应式 ---------- */
@media (max-width: 980px) {
  .article-grid { grid-template-columns: 1fr; }
  .article-grid.has-toc { grid-template-columns: 1fr; }
  .article-side { display: none; }
  .article-head h1 { font-size: 1.7rem; }
  .to-top { right: 14px; bottom: 18px; width: 38px; height: 38px; }
}
@media (max-width: 700px) {
  .article-body table { display: block; overflow-x: auto; white-space: nowrap; }
}

/* ---------- 深色模式 ---------- */
:root[data-theme="dark"] .navbar { background: rgba(11,18,32,.88); }
:root[data-theme="dark"] .article-body { color: #dbe4ef; }
:root[data-theme="dark"] .article-lede { background: linear-gradient(180deg, rgba(51,128,200,.16), rgba(51,128,200,.05)); border-color: rgba(51,128,200,.34); }
:root[data-theme="dark"] .article-lede p { color: #aebfd2; }
:root[data-theme="dark"] .article-body blockquote { background: linear-gradient(90deg, rgba(51,128,200,.16), transparent); color: #b6c6d8; }
:root[data-theme="dark"] .article-body :not(pre) > code { background: rgba(148,163,184,.16); color: #7dd3fc; border-color: rgba(148,163,184,.25); }
:root[data-theme="dark"] .article-body th { background: rgba(51,128,200,.14); color: #bfe0ff; }
:root[data-theme="dark"] .article-body tr:nth-child(even) td { background: rgba(148,163,184,.06); }
:root[data-theme="dark"] .article-body pre { background: #0b1322; border-color: #1e293b; }
:root[data-theme="dark"] .article-body table, :root[data-theme="dark"] .article-body th, :root[data-theme="dark"] .article-body td { border-color: #1e293b; }
:root[data-theme="dark"] .toc-card, :root[data-theme="dark"] .article-related a, :root[data-theme="dark"] .act-btn, :root[data-theme="dark"] a.rel-card { background: #101a2e; }
:root[data-theme="dark"] .article-related a:hover, :root[data-theme="dark"] .toc-card a:hover { color: #7db9ee; }
:root[data-theme="dark"] .article-meta .pill, :root[data-theme="dark"] .reader-tags .art-tag, :root[data-theme="dark"] a.art-card .art-tag, :root[data-theme="dark"] a.art-card .art-meta .src { background: rgba(148,163,184,.15); color: #cbd5e1; border-color: rgba(148,163,184,.25); }

/* ==JA-TYPOGRAPHY-LOCALIZED== */

/* ==========================================================
   日本語ローカライズ：組版（タイポグラフィ）最適化
   日本語ネイティブフォント・禁則処理・約物詰め・行送り
   ========================================================== */
:root{
  /* 日本語フォントスタック（日本語ネイティブフォントを最優先） */
  --ja-sans: "Hiragino Sans","Hiragino Kaku Gothic ProN","Yu Gothic","Yu Gothic UI",
             "Meiryo","Noto Sans JP","Hiragino Sans",sans-serif;
  --ja-mincho: "Hiragino Mincho ProN","Yu Mincho","Yu Mincho Demibold","MS PMincho",serif;
  /* 日本語組版パラメータ */
  --ja-lh-body: 1.9;      /* 本文の行送り（日本語は欧文より広めが読みやすい） */
  --ja-lh-head: 1.55;     /* 見出しの行送り */
  --ja-ls-body: 0.04em;   /* 本文の字間（日本語はわずかに空けると読みやすい） */
  --ja-ls-head: 0.02em;   /* 見出しの字間 */
  --ja-ls-btn: 0.06em;    /* ボタンの字間 */
}

/* --- 基本組版 --- */
html[lang="ja"] body,
body{
  font-family: var(--ja-sans);
  font-size: 15px;                    /* 日本語サイトは本文やや小さめが標準 */
  line-height: var(--ja-lh-body);
  letter-spacing: var(--ja-ls-body);
  /* 禁則処理：行頭・行末の禁則文字（句読点・括弧など）を厳格に守る */
  line-break: strict;
  word-break: normal;                 /* 日本語は単語区切り不要、禁則に任せる */
  overflow-wrap: break-word;
  /* 約物詰め：句読点や括弧のアキを詰めて美しい日本語組版に */
  font-feature-settings: "palt" 1;
  -webkit-font-feature-settings: "palt" 1;
  /* 日本語ではイタリック（斜体）は使わない */
  font-style: normal;
  text-align: left;
  -webkit-text-size-adjust: 100%;
  text-rendering: optimizeLegibility;
}

/* 欧文・数字が混在する箇所は欧文フォントを前面に */
[class*="num"],[class*="Number"],[class*="val"],[class*="Val"],
code,kbd,samp,.mono,.lang-text,input[type="number"],output{
  font-family: "Inter","Helvetica Neue",Arial,var(--ja-sans);
  font-variant-numeric: tabular-nums;   /* 数字の桁を揃える */
  font-feature-settings: "palt" 0,"tnum" 1;
  letter-spacing: 0;
}

/* --- 見出し：情報階層を明確に --- */
h1,h2,h3,h4,h5,h6{
  font-family: var(--ja-sans);
  line-height: var(--ja-lh-head);
  letter-spacing: var(--ja-ls-head);
  font-weight: 600;              /* 日本語ゴシックは極太だと潰れるので 600 まで */
  font-style: normal;
  word-break: normal;
  line-break: strict;
  overflow-wrap: break-word;
}
h1{font-size:1.9rem;letter-spacing:.01em}
h2{font-size:1.55rem}
h3{font-size:1.25rem}
h4,h5,h6{font-size:1.05rem}

/* --- 余白（日本語サイトはゆとりある余白を重視） --- */
p{ line-height: var(--ja-lh-body); margin-bottom: 1.25em; }
li{ line-height: var(--ja-lh-body); }
section{ padding-top: 4.5rem; padding-bottom: 4.5rem; }
.container,.wrap,[class*="container"]{ padding-left: 20px; padding-right: 20px; }

/* --- ボタン：日本語は文字数が増えるため横方向の余白を広めに --- */
.btn,button,.button,[class*="btn"],[role="button"],
a[class*="btn"]{
  font-family: var(--ja-sans);
  letter-spacing: var(--ja-ls-btn);
  padding: .72em 1.7em;
  line-height: 1.6;
  white-space: nowrap;
  font-style: normal;
}
/* 狭い画面では折り返しを許可（日本語は長くなりがち） */
@media (max-width:640px){
  .btn,button,.button,[class*="btn"]{
    white-space: normal;
    padding: .7em 1.2em;
  }
}

/* --- テーブル：日本語は文字が詰まるのでセル内余白を広めに --- */
table{ line-height: 1.75; }
th,td{
  padding: .75em 1em;
  letter-spacing: .02em;
  line-height: 1.7;
}
th{ font-weight: 600; white-space: nowrap; }

/* --- フォーム --- */
label{ letter-spacing: .03em; line-height: 1.7; }
input,select,textarea{
  font-family: var(--ja-sans);
  font-size: 15px;
  line-height: 1.7;
  letter-spacing: .03em;
  padding: .6em .8em;
}
::placeholder{ letter-spacing:.03em; opacity:.6 }

/* --- リンク・ナビゲーション --- */
a{ letter-spacing: .03em; }
nav a,.nav a,[class*="nav"] a{ letter-spacing:.04em; white-space:nowrap }

/* --- 細部の日本語対応 --- */
small,.small{ font-size:.85rem; letter-spacing:.03em }
blockquote{ line-height:1.9; letter-spacing:.03em; font-style:normal }
dt,dd{ line-height:1.8; letter-spacing:.03em }
/* 日本語では斜体・下線過多を避ける */
em,i,cite{ font-style: normal; }
/* 和欧混植：欧文語の前後に四分アキを自動付与 */
[lang="en"],.en{ font-family:"Inter","Helvetica Neue",Arial,sans-serif; letter-spacing:0 }

/* --- 印刷時 --- */
@media print{
  body{ font-size:10.5pt; line-height:1.7 }
  section{ padding:1rem 0 }
}