@charset "UTF-8";
/* ============================================================
   追番月刊 No.26 — 囧次元 日系期刊风（jiiongciyuan.cn）
   米纸白 × 朱红 × 蓝蓝 ｜ 与「次元裂隙」站完全不同骨架
   ============================================================ */
:root {
  --paper: #f7f1e4;
  --paper-2: #efe6d3;
  --card: #fffdf7;
  --ink: #2b2520;
  --ink-soft: #756a5c;
  --line: #ddd0b8;
  --line-dark: #b9a98c;
  --red: #cf3b2c;
  --red-deep: #a82c20;
  --red-pale: #f7e3dd;
  --teal: #2f6f7a;
  --gold: #c8a14b;
  --serif: "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --head-h: 74px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--sans); color: var(--ink); background: var(--paper);
  font-size: 15px; line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
body::before {
  content: ""; position: fixed; inset: 0; z-index: 0; pointer-events: none; opacity: .55;
  background-image: radial-gradient(rgba(120, 95, 60, .07) 1px, transparent 1.4px);
  background-size: 22px 22px;
}
body > * { position: relative; z-index: 1; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 26px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

/* ============ 速報条 ============ */
.newsbar { background: var(--red-deep); color: #f6ead9; font-size: 12.5px; border-bottom: 2px solid #7e2017; }
.newsbar-inner { display: flex; align-items: center; gap: 22px; height: 34px; }
.nb-title { display: flex; align-items: baseline; gap: 10px; white-space: nowrap; }
.nb-title b { font-family: var(--serif); letter-spacing: 2px; font-size: 13px; }
.nb-title span { color: #e6c8a8; font-size: 11px; }
.nb-flash { flex: 1; color: #ecd9bf; letter-spacing: .5px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.newsbar a { color: #ffe9c9; font-weight: 700; white-space: nowrap; border-bottom: 1px dashed rgba(255,233,201,.6); padding-bottom: 1px; }

/* ============ 報头 MASTHEAD ============ */
.masthead { background: var(--paper); border-bottom: 4px double var(--ink); position: sticky; top: 0; z-index: 100; box-shadow: 0 8px 18px -12px rgba(60, 40, 20, .35); }
.mast-inner { display: flex; align-items: center; gap: 24px; height: var(--head-h); }
.brand { display: flex; align-items: center; gap: 12px; flex: 0 0 auto; }
.brand img { width: 46px; height: 46px; border-radius: 6px; border: 1px solid var(--line-dark); }
.brand strong { display: block; font-family: var(--serif); font-size: 22px; font-weight: 900; letter-spacing: 3px; line-height: 1.1; }
.brand small { display: block; font-size: 10.5px; color: var(--ink-soft); letter-spacing: 1.2px; }
.mast-nav { flex: 1; }
.mast-nav ul { display: flex; justify-content: flex-end; gap: 4px; }
.mast-nav a {
  display: block; padding: 8px 13px; font-size: 14px; font-weight: 500; position: relative;
  border-bottom: 2px solid transparent; transition: .2s;
}
.mast-nav a:hover { color: var(--red); }
.mast-nav a.is-active { color: var(--red); border-bottom-color: var(--red); font-weight: 700; }
.mast-actions { display: flex; align-items: center; gap: 12px; }
.btn-red-sm {
  background: var(--red); color: #fff; font-weight: 700; font-size: 14px;
  padding: 9px 20px; border-radius: 2px; letter-spacing: 2px;
  box-shadow: 3px 3px 0 var(--ink); transition: .15s;
}
.btn-red-sm:hover { transform: translate(-1px, -1px); box-shadow: 4px 4px 0 var(--ink); }
.menu-toggle { display: none; flex-direction: column; gap: 5px; padding: 6px; }
.menu-toggle span { width: 24px; height: 2px; background: var(--ink); }

/* ============ 表紙 COVER ============ */
.cover { padding: 74px 0 0; border-bottom: 3px solid var(--ink); }
.cover > .wrap { max-width: 1320px; }
.cover-grid { display: grid; grid-template-columns: 1.02fr .98fr; gap: 100px; align-items: start; }
.cover-kicker { display: flex; align-items: center; gap: 14px; margin-bottom: 18px; }
.cover-kicker b {
  background: var(--red); color: #fff; font-family: var(--serif); font-size: 15px;
  padding: 4px 12px; letter-spacing: 4px;
}
.cover-kicker span { font-size: 11.5px; letter-spacing: 3px; color: var(--ink-soft); border-bottom: 1px solid var(--line-dark); padding-bottom: 2px; }
.cover-copy h1 {
  font-family: var(--serif); font-weight: 900; font-size: clamp(40px, 4.4vw, 64px);
  line-height: 1.2; letter-spacing: 3px;
}
.cover-copy h1 em { font-style: normal; font-size: .4em; display: block; letter-spacing: 7px; color: var(--red); font-weight: 700; margin: 8px 0 4px; }
.cover-lead { margin: 22px 0 26px; color: #4d443b; font-size: 15.5px; line-height: 1.95; max-width: 640px; }
.cover-lines { border-top: 1px solid var(--ink); margin-bottom: 24px; }
.cover-lines li {
  display: flex; align-items: center; gap: 12px; padding: 11px 2px; border-bottom: 1px solid var(--line);
  font-size: 14.5px;
}
.cover-lines li span {
  flex: 0 0 auto; font-family: var(--serif); font-size: 12.5px; color: var(--red);
  border: 1px solid var(--red); padding: 2px 8px; letter-spacing: 2px;
}
.cover-lines li i { margin-left: auto; font-style: normal; font-family: var(--serif); color: var(--ink-soft); font-size: 13px; }
.cover-search { display: flex; border: 2px solid var(--ink); background: var(--card); margin-bottom: 22px; }
.cover-search input { flex: 1; border: none; background: transparent; padding: 13px 16px; font-size: 14px; outline: none; font-family: var(--sans); }
.cover-search button { background: var(--ink); color: var(--paper); padding: 0 26px; font-weight: 700; letter-spacing: 3px; }
.cover-cta { display: flex; align-items: center; gap: 22px; flex-wrap: wrap; }
.btn-red-lg {
  display: inline-block; background: var(--red); color: #fff; font-weight: 700; font-size: 17px;
  font-family: var(--serif); letter-spacing: 4px; padding: 15px 38px; border-radius: 2px;
  box-shadow: 5px 5px 0 var(--ink); transition: .15s;
}
.btn-red-lg:hover { transform: translate(-2px, -2px); box-shadow: 7px 7px 0 var(--ink); background: var(--red-deep); }
.cover-meta { font-size: 12.5px; color: var(--ink-soft); line-height: 1.7; }
.cover-meta b { color: var(--red-deep); }

/* 封面右侧视觉 */
.cover-visual { position: relative; padding: 30px 14px 64px 44px; }
.v-sun {
  position: absolute; width: 340px; height: 340px; border-radius: 50%;
  background: radial-gradient(circle at 38% 35%, #e45b3f, var(--red-deep) 72%);
  top: 0; right: 20px; z-index: 0;
  box-shadow: inset -14px -18px 0 rgba(120, 30, 20, .25);
}
.cover-frame {
  position: relative; z-index: 1; background: #fff; padding: 12px 12px 0;
  border: 1px solid var(--line-dark); transform: rotate(-1.4deg);
  box-shadow: 0 18px 40px rgba(60, 40, 20, .22);
}
.cover-frame img { border: 1px solid #d8ccb4; aspect-ratio: 9/16; object-fit: cover; width: 100%; max-width: 366px; margin: 0 auto; }
.cover-frame figcaption { text-align: center; font-size: 11.5px; color: var(--ink-soft); padding: 8px 0; letter-spacing: 1px; }
.tape { position: absolute; width: 92px; height: 26px; background: rgba(200, 161, 75, .55); top: -12px; }
.tape.t1 { left: -26px; transform: rotate(-34deg); }
.tape.t2 { right: -24px; transform: rotate(28deg); }
.v-strip {
  position: absolute; left: 0; top: 40px; z-index: 2;
  writing-mode: vertical-rl; font-family: var(--serif); font-size: 13px; letter-spacing: 6px;
  background: var(--ink); color: var(--paper); padding: 14px 7px;
}
.v-stamp-img {
  position: absolute; z-index: 2; width: 132px; height: 132px; object-fit: cover;
  left: -6px; bottom: 8px; transform: rotate(4deg); border: 6px solid #fff;
  box-shadow: 0 10px 24px rgba(60, 40, 20, .28);
}
.v-seal {
  position: absolute; z-index: 3; right: 16px; top: 20px; width: 76px; height: 76px;
  border-radius: 50%; border: 3px solid var(--red); color: var(--red);
  display: grid; place-items: center; text-align: center; font-family: var(--serif);
  font-size: 24px; font-weight: 900; line-height: 1.15; transform: rotate(-12deg);
  background: rgba(247, 241, 228, .85); letter-spacing: 2px;
}

/* 発行データ */
.colophon-stats {
  margin-top: 56px; display: grid; grid-template-columns: repeat(5, 1fr);
  border-top: 4px double var(--ink); border-bottom: 4px double var(--ink);
}
.colophon-stats > div { padding: 20px 10px; text-align: center; border-right: 1px dashed var(--line-dark); }
.colophon-stats > div:last-child { border-right: 0; }
.colophon-stats strong { font-family: var(--serif); font-size: clamp(24px, 2.6vw, 34px); font-weight: 900; color: var(--red); display: block; }
.colophon-stats strong i { font-style: normal; font-size: .5em; color: var(--ink); margin-left: 2px; }
.colophon-stats dd { font-size: 12.5px; color: var(--ink-soft); letter-spacing: 1px; margin-top: 2px; }

/* ============ 紙面 SECTIONS ============ */
.paper-section { padding: 78px 0; }
.paper-section.alt { background: var(--paper-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.page-head { display: flex; align-items: flex-start; gap: 22px; margin-bottom: 40px; }
.page-no {
  flex: 0 0 auto; font-family: var(--serif); font-size: 34px; font-weight: 900; color: var(--red);
  border: 2px solid var(--red); border-radius: 50%; width: 68px; height: 68px;
  display: grid; place-items: center; transform: rotate(-6deg); background: var(--card);
}
.page-kicker { font-size: 12px; letter-spacing: 4px; color: var(--teal); font-weight: 700; margin-bottom: 6px; }
.page-head h2 { font-family: var(--serif); font-size: clamp(26px, 3.2vw, 38px); font-weight: 900; line-height: 1.25; letter-spacing: 1px; }
.page-head h2 span { color: var(--red); }
.page-desc { margin-left: auto; max-width: 300px; font-size: 13.5px; color: var(--ink-soft); padding-top: 8px; }

/* P.03 索引 */
.index-grid { display: grid; grid-template-columns: 1.6fr 1fr; gap: 30px; align-items: start; }
.index-card { background: var(--card); border: 3px double var(--line-dark); padding: 30px 32px; }
.index-search { display: flex; border: 2px solid var(--ink); margin-bottom: 26px; }
.index-search input { flex: 1; padding: 12px 14px; border: none; outline: none; font-size: 14px; background: transparent; }
.index-search button { background: var(--red); color: #fff; padding: 0 22px; font-weight: 700; letter-spacing: 2px; }
.index-block { padding: 16px 0; border-top: 1px dashed var(--line); }
.idx-title { font-family: var(--serif); font-size: 15px; font-weight: 700; margin-bottom: 12px; display: flex; align-items: center; gap: 10px; }
.idx-title i { font-style: normal; font-size: 12px; background: var(--ink); color: var(--paper); width: 24px; height: 24px; display: grid; place-items: center; border-radius: 50%; }
.idx-tags { display: flex; flex-wrap: wrap; gap: 9px; }
.idx-tags button {
  border: 1px solid var(--line-dark); background: transparent; color: #4d443b;
  padding: 6px 15px; font-size: 13.5px; border-radius: 0; transition: .15s;
}
.idx-tags button:hover { border-color: var(--red); color: var(--red); }
.idx-tags button.is-active { background: var(--red); border-color: var(--red); color: #fff; font-weight: 700; }
.index-foot { display: flex; justify-content: space-between; align-items: center; border-top: 2px solid var(--ink); margin-top: 18px; padding-top: 16px; font-size: 13.5px; color: var(--ink-soft); }
.index-foot b { color: var(--red); font-family: var(--serif); font-size: 17px; }
.index-foot button { color: var(--teal); text-decoration: underline; text-underline-offset: 3px; font-size: 13px; }
.route-card { background: var(--ink); color: var(--paper); padding: 32px 30px; border: 3px double var(--gold); }
.route-kicker { font-size: 12px; letter-spacing: 4px; color: var(--gold); margin-bottom: 10px; }
.route-card h3 { font-family: var(--serif); font-size: 25px; font-weight: 900; line-height: 1.4; margin-bottom: 22px; }
.route-card ol { border-top: 1px dashed rgba(200,161,75,.5); }
.route-card li { padding: 15px 0; border-bottom: 1px dashed rgba(200,161,75,.5); }
.route-card li b { color: var(--gold); font-family: var(--serif); font-size: 14px; letter-spacing: 2px; }
.route-card li p { font-size: 13.5px; color: #d8cbb6; margin-top: 3px; }
.route-note { margin-top: 18px; font-size: 12px; color: #b8a88e; }

/* P.05 番組表 */
.tv-grid { display: grid; grid-template-columns: repeat(7, 1fr); border: 2px solid var(--ink); background: var(--card); }
.tv-col { border-right: 1px solid var(--line); }
.tv-col:last-child { border-right: 0; }
.tv-day {
  text-align: center; padding: 12px 4px; border-bottom: 2px solid var(--ink);
  font-family: var(--serif); font-weight: 900; font-size: 16px; letter-spacing: 2px; background: var(--paper-2);
}
.tv-day small { display: block; font-family: var(--sans); font-size: 10px; color: var(--ink-soft); letter-spacing: 2px; margin-top: 2px; }
.tv-col.is-today { background: var(--red-pale); position: relative; }
.tv-col.is-today .tv-day { background: var(--red); color: #fff; }
.tv-col.is-today .tv-day small { color: #ffe1d8; }
.tv-col.is-today::after {
  content: "本日"; position: absolute; top: -1px; right: -1px; background: var(--gold); color: var(--ink);
  font-size: 11px; font-weight: 700; padding: 2px 8px; font-family: var(--serif);
}
.tv-cell { padding: 12px 12px 14px; border-bottom: 1px dashed var(--line); }
.tv-cell:last-child { border-bottom: 0; }
.tv-cell b { display: block; font-size: 13px; line-height: 1.5; margin-bottom: 4px; }
.tv-cell span { display: block; font-size: 11px; color: var(--ink-soft); margin-bottom: 8px; }
.tv-cell i { font-style: normal; font-size: 11px; border: 1px solid var(--teal); color: var(--teal); padding: 1px 7px; }
.tv-cell.hot i { border-color: var(--red); color: var(--red); font-weight: 700; }
.tv-note { margin-top: 18px; font-size: 12.5px; color: var(--ink-soft); text-align: center; }

/* P.08 研究室 */
.lab-tabs { display: flex; border: 2px solid var(--ink); margin-bottom: 28px; background: var(--card); flex-wrap: wrap; }
.lab-tab {
  flex: 1; min-width: 180px; padding: 15px 10px; font-family: var(--serif); font-size: 14.5px;
  font-weight: 700; letter-spacing: 1px; border-right: 1px solid var(--line); transition: .15s;
}
.lab-tab:last-child { border-right: 0; }
.lab-tab:hover { background: var(--paper-2); }
.lab-tab.is-active { background: var(--red); color: #fff; }
.lab-panel { display: none; grid-template-columns: 1.25fr 1fr; gap: 40px; align-items: center; background: var(--card); border: 3px double var(--line-dark); padding: 38px 40px; }
.lab-panel.is-active { display: grid; }
.lab-lead { font-size: 15.5px; color: #443c33; margin-bottom: 22px; }
.lab-lead span {
  float: left; font-family: var(--serif); font-size: 58px; line-height: .9; font-weight: 900;
  color: var(--red); margin: 4px 12px 0 0;
}
.lab-points { border-top: 1px solid var(--ink); }
.lab-points li { padding: 11px 0 11px 24px; border-bottom: 1px dashed var(--line); position: relative; font-size: 14px; }
.lab-points li::before { content: "◆"; position: absolute; left: 2px; color: var(--red); font-size: 10px; top: 14px; }
.lab-fig { position: relative; }
.lab-fig img { border: 12px solid #fff; box-shadow: 0 12px 30px rgba(60,40,20,.18); transform: rotate(1deg); aspect-ratio: 4/3; object-fit: cover; }
.lab-fig figcaption { text-align: center; font-size: 12px; color: var(--ink-soft); margin-top: 14px; letter-spacing: 1px; }

/* P.12 フィルム */
.filmstrip { background: var(--ink); padding: 0 0 22px; border: 3px solid #171310; }
.film-perf { height: 18px; background-image: radial-gradient(circle, var(--paper) 4.5px, transparent 5.5px); background-size: 34px 18px; background-repeat: repeat-x; background-position: 8px center; opacity: .9; }
.film-frames { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; padding: 16px; }
.film-frames figure { background: #000; padding: 8px; }
.film-frames img { aspect-ratio: 9/16; object-fit: cover; width: 100%; }
.film-frames figcaption { color: #d8cbb6; font-size: 11.5px; text-align: center; padding: 8px 2px 2px; letter-spacing: 1px; }

/* P.16 葉書 */
.postcards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.postcard {
  position: relative; background: var(--card); border: 1px solid var(--line-dark);
  padding: 26px 26px 22px; box-shadow: 4px 6px 0 rgba(43,37,32,.12);
}
.tilt-r { transform: rotate(.7deg); }
.tilt-l { transform: rotate(-.7deg); }
.postcard:hover { transform: rotate(0deg) translateY(-3px); transition: .2s; }
.post-stamp { position: absolute; top: 14px; right: 16px; width: 52px; height: 62px; border: 1.5px solid var(--red); padding: 3px; background: #fff; }
.post-stamp img { width: 100%; height: 100%; object-fit: cover; }
.post-meta { font-size: 11.5px; color: var(--ink-soft); padding-bottom: 10px; margin-bottom: 12px; border-bottom: 1px dashed var(--line-dark); padding-right: 64px; }
.post-text { font-size: 13.8px; color: #443c33; min-height: 132px; }
.post-sign { margin-top: 14px; font-family: var(--serif); font-weight: 700; text-align: right; color: var(--red-deep); font-size: 13.5px; }

/* P.20 Q&A */
.qa-list { max-width: 880px; }
.qa-item { background: var(--card); border: 1px solid var(--line-dark); margin-bottom: 14px; }
.qa-q { display: flex; align-items: center; gap: 14px; width: 100%; text-align: left; padding: 19px 24px; font-size: 15.5px; font-weight: 700; font-family: var(--serif); }
.qmark { flex: 0 0 auto; width: 38px; height: 38px; border-radius: 50%; background: var(--red); color: #fff; display: grid; place-items: center; font-size: 14px; }
.qfold { margin-left: auto; position: relative; width: 22px; height: 22px; flex: 0 0 auto; }
.qfold::before, .qfold::after { content: ""; position: absolute; background: var(--red); transition: .25s; }
.qfold::before { width: 16px; height: 2px; top: 10px; left: 3px; }
.qfold::after { width: 2px; height: 16px; top: 3px; left: 10px; }
.qa-item.open .qfold::after { transform: scaleY(0); opacity: 0; }
.qa-a { max-height: 0; overflow: hidden; transition: max-height .35s ease, padding .35s ease; padding: 0 24px; }
.qa-item.open .qa-a { max-height: 360px; padding: 0 24px 22px 76px; }
.qa-a p { color: #4d443b; font-size: 14.3px; }
.qa-a a { color: var(--red-deep); font-weight: 700; border-bottom: 1px solid rgba(207,59,44,.45); }
.related { margin-top: 44px; }
.related-title { font-family: var(--serif); font-weight: 900; font-size: 16px; margin-bottom: 14px; padding-left: 12px; border-left: 5px solid var(--red); }
.related-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.related-tags a { border: 1px solid var(--line-dark); background: var(--card); padding: 6px 16px; font-size: 13px; transition: .15s; }
.related-tags a:hover { background: var(--red); color: #fff; border-color: var(--red); }

/* P.24 定期購読 */
.subscribe { padding: 84px 0; background: var(--paper); }
.sub-card {
  background: var(--ink); color: var(--paper); display: grid;
  grid-template-columns: 220px 1fr 300px; gap: 36px; padding: 46px 48px;
  border: 4px double var(--gold); position: relative; overflow: hidden;
}
.sub-side { text-align: center; border-right: 1px dashed rgba(200,161,75,.45); padding-right: 30px; position: relative; }
.sub-seal {
  width: 84px; height: 84px; border-radius: 50%; border: 3px solid var(--red); color: var(--red);
  display: grid; place-items: center; font-family: var(--serif); font-size: 28px; font-weight: 900;
  line-height: 1.15; margin: 0 auto 18px; transform: rotate(-10deg); background: rgba(247,241,228,.06);
}
.sub-side img { border: 4px solid rgba(200,161,75,.5); aspect-ratio: 1; object-fit: cover; }
.sub-iss { margin-top: 14px; font-family: var(--serif); font-size: 20px; letter-spacing: 3px; color: var(--gold); }
.sub-iss small { font-size: 12px; color: #b8a88e; letter-spacing: 1px; }
.sub-kicker { font-size: 12px; letter-spacing: 4px; color: var(--gold); margin-bottom: 12px; }
.sub-main h2 { font-family: var(--serif); font-size: clamp(24px, 2.6vw, 33px); font-weight: 900; line-height: 1.4; margin-bottom: 16px; }
.sub-copy { color: #d8cbb6; font-size: 14px; }
.sub-copy b { color: #f2d8a8; }
.sub-specs { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 22px; }
.sub-specs span { border: 1px solid rgba(200,161,75,.6); color: #ecd9bf; font-size: 12.5px; padding: 4px 13px; }
.sub-actions { display: flex; flex-direction: column; justify-content: center; gap: 14px; }
.btn-red-lg.block { text-align: center; box-shadow: 5px 5px 0 rgba(0,0,0,.45); width: 100%; padding: 16px 18px; }
.btn-outline {
  border: 1.5px solid #cbb99a; color: #ecd9bf; text-align: center; padding: 13px 16px;
  font-size: 14px; letter-spacing: 2px; transition: .15s;
}
.btn-outline:hover { border-color: var(--gold); color: var(--gold); }
.sub-safe { font-size: 11.5px; color: #a99a80; text-align: center; }

/* ============ 奥付 FOOTER ============ */
.colophon { background: var(--paper-2); border-top: 4px double var(--ink); padding: 40px 0 34px; }
.col-top { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.col-top nav { display: flex; gap: 24px; font-size: 13.5px; }
.col-top nav a:hover { color: var(--red); }
.col-rule { border-top: 1px solid var(--line-dark); margin: 22px 0 16px; }
.col-imprint { font-size: 12.5px; color: var(--ink-soft); text-align: center; }
.col-imprint b { color: var(--red-deep); }
.col-copy { font-size: 11.5px; color: #9c9080; text-align: center; margin-top: 6px; letter-spacing: 1px; }

/* ============ 返回顶部 ============ */
.back-top {
  position: fixed; right: 26px; bottom: 108px; z-index: 90; width: 44px; height: 44px;
  background: var(--ink); color: var(--paper); font-size: 18px; opacity: 0; visibility: hidden;
  transform: translateY(12px); transition: .3s;
}
.back-top.show { opacity: 1; visibility: visible; transform: none; }

/* ============ Responsive ============ */
@media (max-width: 1080px) {
  .cover-grid { gap: 36px; }
  .tv-grid { grid-template-columns: repeat(4, 1fr); }
  .tv-col:nth-child(4n) { border-right: 0; }
  .lab-panel.is-active { grid-template-columns: 1fr; gap: 28px; }
  .lab-fig { max-width: 420px; }
  .film-frames { grid-template-columns: repeat(2, 1fr); }
  .postcards { grid-template-columns: repeat(2, 1fr); }
  .sub-card { grid-template-columns: 1fr; gap: 28px; }
  .sub-side { border-right: 0; border-bottom: 1px dashed rgba(200,161,75,.45); padding: 0 0 22px; display: flex; align-items: center; gap: 18px; text-align: left; }
  .sub-side img { width: 88px; height: 88px; flex: 0 0 auto; }
  .sub-iss { margin-top: 0; }
  .sub-seal { margin: 0; flex: 0 0 auto; }
}
@media (max-width: 900px) {
  .menu-toggle { display: flex; }
  .mast-nav {
    position: fixed; top: calc(34px + var(--head-h)); left: 0; right: 0; z-index: 99;
    background: var(--paper); border-bottom: 3px double var(--ink);
    max-height: 0; overflow: hidden; transition: max-height .35s ease;
  }
  body.menu-open .mast-nav { max-height: 460px; }
  .mast-nav ul { flex-direction: column; padding: 10px 20px 18px; }
  .mast-nav a { padding: 13px 8px; border-bottom: 1px solid var(--line); }
  /* 移动端：表紙文案在上、封面图固定居下（DOM 顺序保持） */
  .cover-grid { grid-template-columns: 1fr; }
  .index-grid { grid-template-columns: 1fr; }
  .page-head { flex-wrap: wrap; }
  .page-desc { margin-left: 0; max-width: 100%; }
  .nb-flash { display: none; }
}
@media (max-width: 640px) {
  .paper-section { padding: 58px 0; }
  .cover { padding-top: 44px; }
  .cover-visual { padding: 18px 4px 40px; }
  .v-stamp-img { width: 96px; height: 96px; }
  .v-seal { width: 62px; height: 62px; font-size: 19px; }
  .cover-cta { flex-direction: column; align-items: stretch; }
  .btn-red-lg { text-align: center; }
  .colophon-stats { grid-template-columns: repeat(2, 1fr); }
  .colophon-stats > div:nth-child(2) { border-right: 0; }
  .colophon-stats > div { border-bottom: 1px dashed var(--line-dark); }
  .tv-grid { grid-template-columns: repeat(2, 1fr); }
  .tv-col:nth-child(4n) { border-right: 1px solid var(--line); }
  .tv-col:nth-child(2n) { border-right: 0; }
  .lab-tab { min-width: 50%; border-bottom: 1px solid var(--line); }
  .lab-panel { padding: 26px 22px; }
  .qa-item.open .qa-a { padding-left: 24px; }
  .postcards { grid-template-columns: 1fr; }
  .sub-card { padding: 34px 24px; }
  .film-frames { grid-template-columns: 1fr 1fr; gap: 10px; padding: 10px; }
  .newsbar-inner { justify-content: space-between; }
  .nb-title span { display: none; }
}