/* ============================================================
   冷灰工作臺 · Modernist Editorial
   設計參考 docs/arknights-aesthetic.md（不取樣官方素材）
   ============================================================ */

:root {
  /* ---- 冷灰工作臺色板 ---- */
  --paper:     #F1F3F1;   /* 主要淺色面板 */
  --paper-2:   #E7EBE8;   /* 次面板 */
  --mist:      #D8DEDE;   /* 分隔、霧 */
  --deep:      #11171A;   /* 深色操作層 */
  --ink:       #172024;   /* 主要文字 */
  --ink-soft:  rgba(23, 32, 36, .62);
  --ink-faint: rgba(23, 32, 36, .38);
  --inverse:   #F7F8F5;
  --signal:    #D4B23E;   /* 強調色：選取、重要狀態（唯一主角） */
  --signal-soft: rgba(212, 178, 62, .22);
  --data:      #4DA9B2;   /* 連線、外連 */
  --danger:    #BC4849;
  --line:      rgba(23, 32, 36, .14);
  --line-soft: rgba(23, 32, 36, .08);

  /* ---- 字體角色 ---- */
  --font-sans:  "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", system-ui, sans-serif;
  --font-mono:  "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --font-serif: "Noto Serif TC", "Songti TC", serif;

  /* ---- 幾何 ---- */
  --cut: 14px;             /* 切角 */
  --hair: 1px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition-duration: .01ms !important; animation-duration: .01ms !important; }
  .scroll-cue-mark path { animation: none !important; opacity: 1; stroke-dashoffset: 0; }
}

body {
  font-family: var(--font-sans);
  color: var(--ink);
  background:
    radial-gradient(120% 100% at 50% 30%, #F6F7F4 0%, #F0F3F0 58%, #EBEEEA 100%);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

html.booting, html.booting body { overflow: hidden; }

/* ============================================================
   沙盤啟動遮罩：冷灰工作臺上的初始化終端
   ============================================================ */
.boot {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: grid;
  place-items: center;
  overflow: hidden;
  color: var(--ink);
  background:
    linear-gradient(90deg, transparent 0 49.9%, var(--line-soft) 50%, transparent 50.1%),
    linear-gradient(var(--paper) 0%, var(--paper-2) 100%);
  clip-path: inset(0);
  transition: clip-path .68s cubic-bezier(.77, 0, .18, 1), opacity .2s ease;
}
.boot[hidden] { display: none; }
.boot.departing { clip-path: inset(0 0 100% 0); pointer-events: none; }
.boot-panel {
  width: min(560px, calc(100vw - 48px));
  transform: translateY(-2vh);
}
.boot-kicker {
  font-size: 10px;
  color: var(--ink-soft);
  letter-spacing: .2em;
}
.boot-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-top: 10px;
}
.boot-heading strong {
  font-size: clamp(36px, 7vw, 62px);
  line-height: .95;
  letter-spacing: -.035em;
}
.boot-heading span {
  padding-bottom: 4px;
  font-size: 9px;
  color: var(--ink-faint);
  letter-spacing: .16em;
}
.boot-track {
  position: relative;
  height: 3px;
  margin-top: 30px;
  background: var(--mist);
  overflow: hidden;
}
.boot-track i {
  position: absolute;
  inset: 0;
  background: var(--signal);
  transform: scaleX(.06);
  transform-origin: 0 50%;
  will-change: transform;
}
.boot-readout {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-top: 10px;
  font-size: 10px;
  color: var(--ink-soft);
  letter-spacing: .13em;
}
.boot-readout output {
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}
.boot.ready .boot-readout span { color: var(--signal); }
.boot-coordinate {
  position: absolute;
  right: 58px;
  bottom: 26px;
  font-size: 9px;
  color: var(--ink-faint);
  letter-spacing: .18em;
}
.boot-corner {
  position: absolute;
  width: 28px;
  height: 28px;
  border-color: var(--ink-faint);
  border-style: solid;
}
.boot-corner-tl { top: 22px; left: 22px; border-width: 1px 0 0 1px; }
.boot-corner-br { right: 22px; bottom: 22px; border-width: 0 1px 1px 0; }

.page, main, .section, .about-grid, .about-quote, .about-body,
.archive-grid, .arc-card {
  min-width: 0;
  max-width: 100%;
}

.mono { font-family: var(--font-mono); letter-spacing: .04em; }
.serif { font-family: var(--font-serif); }

::selection { background: var(--signal); color: var(--deep); }

a { color: inherit; text-decoration: none; }

/* ============================================================
   頂列：masthead + nav
   ============================================================ */
.topbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 40;
  display: flex; align-items: flex-start; justify-content: flex-end;
  padding: 22px 30px 0;
  pointer-events: none;
}
/* 身分列：固定在沙盤上，隨捲動離開 */
.masthead {
  position: absolute; top: 22px; left: 30px; z-index: 20;
  pointer-events: none;
}
.mini { font-size: 10px; color: var(--ink-soft); letter-spacing: .22em; }
.wordmark {
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(26px, 3.2vw, 40px);
  line-height: 1.05;
  letter-spacing: -.02em;
  color: var(--ink);
}
.role { margin-top: 18px; font-size: 10.5px; color: var(--ink); letter-spacing: .18em; }
.role .sep { color: var(--signal); }

.topnav {
  display: flex; align-items: center; gap: 22px;
  font-size: 11px; color: var(--ink-soft);
  padding-top: 6px;
  pointer-events: auto;
}
.topnav a { position: relative; padding-bottom: 2px; }
.topnav a::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 100%; height: 1px; background: var(--ink);
  transform: scaleX(0); transform-origin: right;
  transition: transform .25s ease;
}
.topnav a:hover::after { transform: scaleX(1); transform-origin: left; }
.clock { color: var(--ink-faint); font-variant-numeric: tabular-nums; }

/* ============================================================
   左側 TOC 軌道（控制終端）
   ============================================================ */
.toc {
  position: absolute; left: 30px; top: 50%;
  transform: translateY(-50%);
  z-index: 20;
  display: flex; flex-direction: column; gap: 20px;
  font-size: 10.5px;
}
.toc-item {
  display: flex; align-items: center; gap: 8px;
  background: none; border: 0; padding: 4px 2px; cursor: pointer;
  font: inherit; color: var(--ink-soft);
  text-align: left; letter-spacing: .1em;
  transition: color .2s ease;
  text-shadow: 0 1px 2px var(--paper), 0 0 4px var(--paper), 0 0 8px var(--paper), 0 0 14px var(--paper);   /* 白暈加深：沙面陰影上仍可讀 */
}
.toc-item .toc-name { color: var(--ink-soft); letter-spacing: .06em; }
.toc-item:hover, .toc-item.active { color: var(--ink); }
.toc-item[aria-disabled="true"] { cursor: default; }
.toc-item.active .toc-name { color: var(--ink-soft); }
.toc-item .idx { color: var(--ink-faint); }
.toc-item.active .idx { color: var(--signal); font-weight: 700; }

.dot {
  display: inline-block; width: 7px; height: 7px;
  background: var(--mist); border-radius: 0;
  transition: background .2s ease;
}
.dot.on { background: var(--signal); }
.dot.off { background: var(--mist); }
.toc-item:hover .dot.on, .toc-item.active .dot.on { box-shadow: 0 0 0 3px var(--signal-soft); }

/* ============================================================
   沙盤 hero
   ============================================================ */
.sandbox {
  position: relative;
  height: 100vh; height: 100svh;
  min-height: 560px;
  overflow: hidden;
}
.scene {
  position: absolute; inset: 0;
}
.scene canvas { display: block; }
.scene canvas { outline: none; }
.scene .fallback {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
}
.fallback .fb-inner {
  border: 1px solid var(--line);
  padding: 26px 34px;
  background: rgba(241,243,241,.7);
  font-size: 12px; color: var(--ink-soft); letter-spacing: .1em;
  text-align: center;
}

/* 邊框裁切標記 */
.frame i {
  position: absolute; width: 18px; height: 18px;
  border-color: rgba(23,32,36,.4); border-style: solid; border-width: 0;
  z-index: 20; pointer-events: none;
}
.frame .tl { top: 84px; left: 22px; border-top-width: 1px; border-left-width: 1px; }
.frame .tr { top: 84px; right: 22px; border-top-width: 1px; border-right-width: 1px; }
.frame .bl { bottom: 54px; left: 22px; border-bottom-width: 1px; border-left-width: 1px; }
.frame .br { bottom: 54px; right: 22px; border-bottom-width: 1px; border-right-width: 1px; }

.sandbox::after {
  content: ""; position: absolute; inset: 0; z-index: 5; pointer-events: none;
  background: radial-gradient(120% 100% at 50% 42%, transparent 50%, rgba(239,242,238,.55) 82%, rgba(239,242,238,.95) 98%);
}
.legend {
  position: absolute; right: 30px; bottom: 20px; z-index: 20;
  display: flex; gap: 18px;
  font-size: 10px; color: var(--ink-faint); letter-spacing: .12em;
}
.legend .lg { display: inline-flex; align-items: center; gap: 6px; }
.coord {
  position: absolute; right: 30px; top: 92px; z-index: 20;
  font-size: 9.5px; color: var(--ink-soft); letter-spacing: .18em;
  writing-mode: vertical-rl;
}
.mobile-scroll-cue { display: none; }

@keyframes cue-draw-shaft {
  0%, 6% { opacity: 0; stroke-dashoffset: 23; }
  10% { opacity: 1; }
  36%, 72% { opacity: 1; stroke-dashoffset: 0; }
  88%, 100% { opacity: 0; stroke-dashoffset: 0; }
}
@keyframes cue-draw-head {
  0%, 28% { opacity: 0; stroke-dashoffset: 19; }
  32% { opacity: 1; }
  50%, 72% { opacity: 1; stroke-dashoffset: 0; }
  88%, 100% { opacity: 0; stroke-dashoffset: 0; }
}

/* 場景地標標籤（CSS2D） */
.tag {
  display: flex; flex-direction: column; align-items: flex-start; gap: 1px;
  padding: 4px 8px 4px 7px;
  border-left: 2px solid var(--signal);   /* 已登錄標記 = 黃；未登錄在下方覆寫回灰 */
  background: rgba(241,243,241,.82);
  backdrop-filter: blur(2px);
  pointer-events: none;
  white-space: nowrap;
  transition: border-color .2s ease, background .2s ease;
}
.tag::after {
  content: ""; position: absolute; left: 5px; top: 100%;
  width: 1px; height: 30px;
  background: linear-gradient(rgba(212,178,62,.5), rgba(212,178,62,.06));
}
.tag::before {
  content: ""; position: absolute; left: 2.5px; top: calc(100% + 28px);
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--signal);
}
.tag.unmapped::after {
  background: linear-gradient(rgba(23,32,36,.3), rgba(23,32,36,.06));
}
.tag.unmapped::before { background: var(--ink-faint); }
.tag .tag-id { font-family: var(--font-mono); font-size: 9px; letter-spacing: .18em; color: var(--ink-faint); }
.tag .tag-name { font-family: var(--font-mono); font-size: 10px; font-weight: 700; letter-spacing: .08em; color: var(--ink); text-shadow: 0 0 4px var(--paper), 0 0 8px var(--paper); }
.tag.hot { border-color: var(--signal); background: rgba(247,248,245,.95); }
.tag.hot .tag-id { color: var(--signal); font-weight: 700; }
.tag.dim { opacity: .5; }
.tag.unmapped { border-left-color: var(--ink-faint); }
.tag.unmapped .tag-id { color: var(--ink-faint); }
.tag.unmapped .tag-name { color: var(--ink-soft); font-weight: 500; }

/* ============================================================
   內容區段
   ============================================================ */
.section {
  position: relative;
  padding: 96px clamp(24px, 6vw, 88px);
  background: linear-gradient(var(--paper) 0%, var(--paper-2) 100%);
  border-top: 1px solid var(--line-soft);
}
.sec-head {
  display: flex; align-items: baseline; gap: 14px;
  margin-bottom: 48px;
}
.sec-idx { font-size: 12px; color: var(--signal); font-weight: 700; }
.sec-name { font-size: 13px; font-weight: 700; color: var(--ink); letter-spacing: .28em; }
.sec-line { flex: 1; height: 1px; background: var(--line); transform: translateY(-4px); }

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: clamp(32px, 6vw, 88px);
  max-width: 1080px; margin: 0 auto;
}
.quote-en {
  font-size: clamp(20px, 1.8vw, 23px);
  font-weight: 600; line-height: 1.62;
  letter-spacing: .01em;
  color: var(--ink);
}
.quote-zh { margin-top: 18px; font-size: clamp(15px, 1.6vw, 19px); color: var(--ink-soft); }

.about-body { max-width: 520px; }
.lede { font-size: 17px; line-height: 1.85; font-weight: 500; }
.about-body p { font-size: 14.5px; line-height: 1.9; color: var(--ink-soft); margin-top: 16px; }
.lede b { color: var(--ink); font-weight: 900; }
.note {
  font-size: 11px !important; color: var(--ink-faint) !important;
  border-left: 2px solid var(--mist); padding-left: 12px;
  margin-top: 22px !important;
}
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; list-style: none; }
.chips li {
  font-size: 10.5px; letter-spacing: .08em; color: var(--ink-soft);
  border: 1px solid var(--line); padding: 5px 10px;
  transition: border-color .2s ease, color .2s ease;
}
.chips li:hover { border-color: var(--ink); color: var(--ink); }

/* ---- ARCHIVE 卡片 ---- */
.archive-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
  max-width: 1080px; margin: 0 auto;
}
.arc-card {
  position: relative;
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 26px 26px 24px;
  transition: border-color .25s ease, transform .25s ease;
}
.arc-card::before {
  content: ""; position: absolute; top: -1px; left: -1px;
  width: 46px; height: 3px; background: var(--signal);
  transform: scaleX(0); transform-origin: left;
  transition: transform .3s ease;
}
.arc-card:hover { border-color: rgba(23,32,36,.32); transform: translateY(-3px); }
.arc-card:hover::before { transform: scaleX(1); }
.arc-head { display: flex; justify-content: space-between; font-size: 10px; color: var(--ink-faint); letter-spacing: .18em; }
.arc-title { margin-top: 14px; font-size: 21px; font-weight: 900; letter-spacing: -.01em; }
.arc-slug { margin-top: 2px; font-size: 10.5px; color: var(--signal); letter-spacing: .1em; }
.arc-zh { margin-top: 12px; font-size: 13.5px; line-height: 1.85; color: var(--ink-soft); }
.arc-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 16px; }
.arc-tags li { list-style: none; font-size: 9.5px; letter-spacing: .06em; color: var(--ink-faint); border: 1px solid var(--line-soft); padding: 3px 8px; }
.arc-links { display: flex; gap: 20px; margin-top: 18px; font-size: 11px; letter-spacing: .1em; }
.arc-links a { color: var(--data); border-bottom: 1px solid transparent; padding-bottom: 1px; }
.arc-links a:hover { border-bottom-color: var(--data); }

.archive-note {
  max-width: 1080px; margin: 34px auto 0;
  font-size: 10.5px; color: var(--ink-faint); letter-spacing: .12em;
}

/* ============================================================
   預覽卡（右側滑入）
   ============================================================ */
.card {
  position: fixed; top: 0; right: 0; bottom: 0; z-index: 60;
  width: min(430px, 92vw);
  background: var(--paper);
  border-left: 1px solid var(--line);
  box-shadow: -18px 0 40px rgba(17,23,26,.10);
  transform: translateX(105%);
  transition: transform .42s cubic-bezier(.22,.9,.28,1);
  display: flex; flex-direction: column;
}
.card.open { transform: translateX(0); }
.card-backdrop { display: none; }
.card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0;
  height: 3px; background: var(--signal);
}
.card-inner {
  overflow-y: auto; padding: 44px 36px 40px;
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
}
.card-head { display: flex; justify-content: space-between; align-items: center; font-size: 10px; color: var(--ink-faint); letter-spacing: .2em; }
.card-close {
  background: none; border: 1px solid var(--line); width: 28px; height: 28px;
  font-family: var(--font-mono); font-size: 12px; color: var(--ink-soft); cursor: pointer;
  transition: border-color .2s ease, color .2s ease;
}
.card-close:hover { border-color: var(--ink); color: var(--ink); }
.card-title { margin-top: 22px; font-size: 30px; font-weight: 900; letter-spacing: -.015em; line-height: 1.2; }
.card-slug { margin-top: 4px; font-family: var(--font-mono); font-size: 11px; color: var(--signal); letter-spacing: .12em; }
.card-zh { margin-top: 20px; font-size: 14.5px; line-height: 1.95; }
.card-desc { margin-top: 14px; font-size: 12px; line-height: 1.8; color: var(--ink-soft); font-family: var(--font-mono); letter-spacing: .01em; }
.card-tags { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 20px; }
.card-tags li { list-style: none; font-family: var(--font-mono); font-size: 10px; letter-spacing: .08em; color: var(--ink-soft); border: 1px solid var(--line); padding: 5px 10px; }
.card-meta { margin-top: 24px; border-top: 1px solid var(--line); padding-top: 16px; display: flex; flex-direction: column; gap: 10px; font-size: 10.5px; letter-spacing: .14em; }
.card-meta .row { display: flex; justify-content: space-between; color: var(--ink-soft); }
.card-meta .row dt { color: var(--ink-faint); }
.card-meta .row dd { color: var(--ink); }
.card-links { display: flex; gap: 22px; margin-top: 26px; font-family: var(--font-mono); font-size: 12px; letter-spacing: .12em; }
.card-links a { color: var(--data); border-bottom: 1px solid transparent; padding-bottom: 2px; }
.card-links a:hover { border-bottom-color: var(--data); }

/* ============================================================
   Footer
   ============================================================ */
.footer {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px;
  padding: 30px clamp(24px, 6vw, 88px);
  background: var(--deep); color: var(--ink-soft);
  font-size: 10px; letter-spacing: .14em;
}
.footer span { color: rgba(247,248,245,.45); }
.footer a { color: var(--inverse); border-bottom: 1px solid rgba(247,248,245,.3); padding-bottom: 1px; }
.footer a:hover { border-bottom-color: var(--signal); color: var(--signal); }

.noscript { padding: 40px 24px; font-size: 12px; color: var(--ink-soft); }

/* ============================================================
   響應式
   ============================================================ */
@media (max-width: 900px) {
  .toc { display: none; }
  .coord { display: none; }
  .about-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  body.card-open { overflow: hidden; }

  .topbar {
    position: absolute;
    padding: calc(16px + env(safe-area-inset-top)) 18px 0;
  }
  .topnav { gap: 14px; }
  .topnav a { display: none; }

  .masthead {
    top: calc(20px + env(safe-area-inset-top));
    left: 20px;
    right: 20px;
  }
  .mini { font-size: 9px; letter-spacing: .18em; }
  .wordmark { font-size: clamp(28px, 10vw, 38px); }
  .role { margin-top: 12px; font-size: 9.5px; letter-spacing: .14em; }

  .sandbox::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: calc(320px + env(safe-area-inset-top));
    z-index: 6;
    pointer-events: none;
    background: linear-gradient(
      to bottom,
      rgba(241, 243, 241, .96) 0,
      rgba(241, 243, 241, .82) 38%,
      rgba(241, 243, 241, .36) 72%,
      rgba(241, 243, 241, 0) 100%
    );
  }

  /* 手機 hero：把桌機側欄改成可發現、可點擊的專案選擇器。 */
  .toc {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    left: 20px;
    right: 20px;
    top: calc(150px + env(safe-area-inset-top));
    transform: none;
    gap: 7px;
    max-width: 340px;
    font-size: 9.5px;
  }
  .toc-item {
    min-width: 0;
    min-height: 44px;
    padding: 0 12px;
    border: 1px solid var(--line);
    background: rgba(241, 243, 241, .9);
    text-shadow: none;
  }
  .toc-item .toc-name {
    margin-left: auto;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .toc-item[data-id="UNMAPPED"] { display: none; }

  .frame i { width: 14px; height: 14px; }
  .frame .tl, .frame .tr { top: calc(266px + env(safe-area-inset-top)); }
  .frame .bl, .frame .br { bottom: 74px; }
  .frame .tl, .frame .bl { left: 14px; }
  .frame .tr, .frame .br { right: 14px; }
  .legend {
    left: 18px;
    right: auto;
    bottom: calc(18px + env(safe-area-inset-bottom));
    font-size: 9px;
  }
  .mobile-scroll-cue {
    position: absolute;
    right: 14px;
    bottom: calc(8px + env(safe-area-inset-bottom));
    z-index: 22;
    display: inline-flex;
    align-items: center;
    justify-content: flex-end;
    gap: 10px;
    min-width: 104px;
    min-height: 48px;
    padding: 0 4px 0 10px;
    color: var(--ink-soft);
    font-size: 9px;
    letter-spacing: .14em;
    background: linear-gradient(90deg, rgba(241,243,241,0), rgba(241,243,241,.72));
  }
  .scroll-cue-mark {
    display: block;
    width: 24px;
    height: 32px;
    overflow: visible;
  }
  .scroll-cue-mark path {
    fill: none;
    stroke: var(--signal);
    stroke-width: 1.2;
    stroke-linecap: square;
    stroke-linejoin: miter;
    vector-effect: non-scaling-stroke;
  }
  .cue-shaft {
    stroke-dasharray: 23;
    stroke-dashoffset: 23;
    animation: cue-draw-shaft 2.2s cubic-bezier(.16, 1, .3, 1) infinite;
  }
  .cue-head {
    stroke-dasharray: 19;
    stroke-dashoffset: 19;
    animation: cue-draw-head 2.2s cubic-bezier(.16, 1, .3, 1) infinite;
  }
  .mobile-scroll-cue:active { color: var(--ink); }

  .section {
    width: 100%;
    padding: 54px 20px 64px;
    overflow: hidden;
  }
  .sec-head { margin-bottom: 34px; }
  .sec-head { gap: 11px; }
  .sec-name { letter-spacing: .22em; }

  .about-grid { display: block; width: 100%; }
  .quote-en {
    max-width: 100%;
    font-size: clamp(19px, 5.2vw, 22px);
    line-height: 1.58;
    overflow-wrap: break-word;
  }
  .quote-zh {
    max-width: 100%;
    margin-top: 14px;
    font-size: 15px;
    line-height: 1.75;
    overflow-wrap: anywhere;
  }
  .about-body { margin-top: 42px; width: 100%; }
  .about-body .lede {
    margin-top: 0;
    font-size: 16px;
    line-height: 1.8;
  }
  .chips {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    width: 100%;
    gap: 8px;
  }
  .chips li {
    min-width: 0;
    padding: 8px 6px;
    text-align: center;
    overflow-wrap: anywhere;
  }

  .archive-grid {
    grid-template-columns: minmax(0, 1fr);
    width: 100%;
    gap: 16px;
  }
  .arc-card { padding: 22px 20px 21px; overflow: hidden; }
  .arc-head { gap: 12px; letter-spacing: .1em; }
  .arc-head span:first-child { min-width: 0; }
  .arc-title { font-size: 20px; }
  .arc-zh { overflow-wrap: anywhere; }
  .arc-links a { display: inline-flex; align-items: center; min-height: 44px; }

  .footer { padding: 26px 20px calc(26px + env(safe-area-inset-bottom)); }
  .tag { display: none; }

  /* 手機：保留沙盤視野的小型浮動專案卡。 */
  .card-backdrop {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 55;
    width: 100%;
    height: 100%;
    border: 0;
    background: rgba(17, 23, 26, .12);
    opacity: 0;
    pointer-events: none;
    transition: opacity .28s ease;
  }
  body.card-open .card-backdrop { opacity: 1; pointer-events: auto; }
  .card {
    top: calc(112px + env(safe-area-inset-top));
    left: 50%; right: auto; bottom: auto;
    width: min(380px, calc(100vw - 36px)); height: auto; max-height: min(38svh, 340px);
    border: 1px solid var(--line);
    opacity: 0;
    pointer-events: none;
    transform: translate(-50%, 14px) scale(.985);
    transform-origin: 50% 0;
    transition: transform .38s cubic-bezier(.22,.9,.28,1), opacity .24s ease;
    box-shadow: 0 18px 46px rgba(17,23,26,.16);
  }
  .card.open { opacity: 1; pointer-events: auto; transform: translate(-50%, 0) scale(1); }
  .card-inner {
    min-height: 0;
    overscroll-behavior: contain;
    padding: 18px 18px 22px;
    clip-path: none;
  }
  .card-head { min-height: 44px; }
  .card-close { width: 44px; height: 44px; flex: 0 0 44px; }
  .card-title { margin-top: 12px; font-size: 24px; }
  .card-zh { margin-top: 13px; line-height: 1.8; }
  .card-desc { margin-top: 10px; line-height: 1.7; }
  .card-tags { margin-top: 15px; }
  .card-meta { margin-top: 18px; padding-top: 13px; }
  .card-links { margin-top: 18px; }
  .card-links a { display: inline-flex; align-items: center; min-height: 44px; }
}