/* ============================================================
   彩讯速查 · 设计系统
   主色取自源站（#CC0000 正红 / #E02A52 玫红 / #1CAF6A 绿）
   背景改为暖白，降低长时间阅读的视觉疲劳
   ============================================================ */

:root {
  --red:      #CC0000;
  --red-soft: #E02A52;
  --red-tint: #FFF1F1;
  --green:    #1CAF6A;
  --green-tint:#EAF7EF;
  --amber:    #E08C00;
  --amber-tint:#FFF7E6;

  --ink:      #1A1A1A;
  --ink-2:    #4A4A4A;
  --ink-3:    #8A8A8A;
  --ink-4:    #B8B8B8;
  --line:     #E8E6E1;
  --line-2:   #F0EEE9;

  --bg:       #FAFAF8;
  --bg-card:  #FFFFFF;
  --bg-sunk:  #F4F2EE;

  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 20px;

  --sh-1: 0 1px 2px rgba(26,26,26,.05);
  --sh-2: 0 2px 8px rgba(26,26,26,.06), 0 1px 2px rgba(26,26,26,.04);
  --sh-3: 0 8px 28px rgba(26,26,26,.10), 0 2px 8px rgba(26,26,26,.05);
  --sh-4: 0 24px 64px rgba(26,26,26,.16), 0 8px 24px rgba(26,26,26,.08);

  --ease: cubic-bezier(.22,1,.36,1);
  --ease-out: cubic-bezier(.16,1,.3,1);
  --dur: .34s;

  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
}

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
               "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--ink);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
}

/* 极淡纸纹，避免纯色板的塑料感 */
.grain {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  opacity: .5;
  background-image:
    radial-gradient(circle at 20% 10%, rgba(204,0,0,.028), transparent 42%),
    radial-gradient(circle at 85% 75%, rgba(28,175,106,.022), transparent 46%);
}

/* ══════════════ 顶栏 ══════════════ */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(250,250,248,.82);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--line);
}
.topbar-inner {
  max-width: 1180px; margin: 0 auto;
  display: flex; align-items: center; gap: 20px;
  padding: 12px 24px;
}

.brand {
  display: flex; align-items: center; gap: 9px;
  text-decoration: none; color: var(--ink);
  flex-shrink: 0;
}
.brand-mark {
  width: 30px; height: 30px; border-radius: 9px;
  background: linear-gradient(145deg, var(--red), var(--red-soft));
  color: #fff; font-weight: 700; font-size: 16px;
  display: grid; place-items: center;
  box-shadow: 0 2px 8px rgba(204,0,0,.28);
  transition: transform var(--dur) var(--ease);
}
.brand:hover .brand-mark { transform: rotate(-6deg) scale(1.06); }
.brand-name {
  font-weight: 650; font-size: 16px; letter-spacing: -.01em;
}

/* 搜索框 */
.search-wrap {
  position: relative; flex: 1; max-width: 520px;
  display: flex; align-items: center;
}
.s-icon {
  position: absolute; left: 13px; width: 17px; height: 17px;
  color: var(--ink-4); pointer-events: none;
  transition: color var(--dur) var(--ease);
}
#q {
  width: 100%; height: 40px;
  padding: 0 74px 0 39px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: var(--bg-card);
  font-size: 14.5px; color: var(--ink);
  outline: none;
  transition: border-color var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease),
              background var(--dur) var(--ease);
  -webkit-appearance: none;
}
#q::placeholder { color: var(--ink-4); }
#q::-webkit-search-cancel-button { display: none; }
#q:focus {
  border-color: rgba(204,0,0,.4);
  box-shadow: 0 0 0 4px rgba(204,0,0,.08);
}
#q:focus ~ .s-icon, .search-wrap:focus-within .s-icon { color: var(--red); }

.hint-key {
  position: absolute; right: 40px;
  font: 600 11px/1 var(--mono);
  color: var(--ink-4);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 3px 6px;
  background: var(--bg-sunk);
  pointer-events: none;
  transition: opacity .2s var(--ease);
}
#q:not(:placeholder-shown) ~ .hint-key { opacity: 0; }

.s-clear {
  position: absolute; right: 10px;
  width: 22px; height: 22px; border-radius: 50%;
  border: none; background: var(--line-2); color: var(--ink-3);
  display: grid; place-items: center; cursor: pointer;
  transition: background .2s, color .2s, transform .2s var(--ease);
}
.s-clear svg { width: 12px; height: 12px; }
.s-clear:hover { background: var(--line); color: var(--ink); transform: scale(1.08); }

/* 导航 */
.topnav { display: flex; gap: 4px; flex-shrink: 0; }
.navbtn {
  position: relative;
  border: none; background: none; cursor: pointer;
  font-size: 14px; font-weight: 550; color: var(--ink-3);
  padding: 7px 13px; border-radius: 9px;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.navbtn:hover { color: var(--ink); background: rgba(0,0,0,.035); }
.navbtn.active { color: var(--red); background: var(--red-tint); }

.scroll-progress {
  height: 2px; width: 0%;
  background: linear-gradient(90deg, var(--red), var(--red-soft));
  transition: width .1s linear;
}

/* ══════════════ 容器 ══════════════ */
.shell {
  position: relative; z-index: 1;
  max-width: 1180px; margin: 0 auto;
  padding: 26px 24px 80px;
}

/* ══════════════ 概览条 ══════════════ */
.hero {
  display: flex; align-items: center; justify-content: space-around;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 20px 10px;
  margin-bottom: 22px;
  box-shadow: var(--sh-2);
}
.hero-stat { text-align: center; flex: 1; }
.hs-num {
  display: block;
  font: 700 26px/1.15 var(--mono);
  letter-spacing: -.02em;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}
.hs-num.accent { color: var(--red); }
.hs-num.ok { color: var(--green); }
.hs-lbl {
  display: block; margin-top: 5px;
  font-size: 12px; color: var(--ink-3); letter-spacing: .02em;
}
.hero-div { width: 1px; height: 34px; background: var(--line); }

/* ══════════════ 筛选 ══════════════ */
.filter-panel {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 6px 18px;
  margin-bottom: 22px;
  box-shadow: var(--sh-1);
}
.frow {
  display: flex; align-items: center; gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line-2);
}
.frow:last-child { border-bottom: none; }
.flabel {
  font-size: 12.5px; font-weight: 600; color: var(--ink-3);
  flex-shrink: 0; width: 34px; letter-spacing: .02em;
}
.flabel.ml { width: auto; margin-left: 20px; }

.chips { display: flex; flex-wrap: wrap; gap: 7px; flex: 1; }
.chips.scrollx {
  flex-wrap: nowrap; overflow-x: auto; padding-bottom: 3px;
  scrollbar-width: none;
}
.chips.scrollx::-webkit-scrollbar { display: none; }

.chip {
  border: 1px solid var(--line);
  background: var(--bg-card);
  color: var(--ink-2);
  font-size: 13px; font-weight: 500;
  padding: 5px 12px; border-radius: 8px;
  cursor: pointer; white-space: nowrap;
  transition: all .22s var(--ease);
}
.chip:hover {
  border-color: var(--ink-4); color: var(--ink);
  transform: translateY(-1px);
}
.chip.active {
  background: var(--red); border-color: var(--red); color: #fff;
  box-shadow: 0 2px 8px rgba(204,0,0,.24);
}
.chip .c-chip-n {
  opacity: .55; font: 500 11px/1 var(--mono);
  margin-left: 5px;
}

/* ══════════════ 结果栏 ══════════════ */
.result-bar {
  display: flex; align-items: baseline; justify-content: space-between;
  margin-bottom: 14px; padding: 0 2px;
}
.rb-left { display: flex; align-items: baseline; gap: 10px; }
.rb-right { display: flex; align-items: center; gap: 4px; }
.rb-title { font-size: 17px; font-weight: 650; letter-spacing: -.01em; }
.rb-count {
  font: 500 12.5px/1 var(--mono);
  color: var(--ink-3);
  padding: 3px 8px;
  background: var(--bg-sunk);
  border-radius: 20px;
}
.textbtn {
  display: inline-flex; align-items: center; gap: 5px;
  border: none; background: none; cursor: pointer;
  font-size: 13px; font-weight: 550; color: var(--ink-3);
  padding: 6px 10px; border-radius: 8px;
  transition: all .22s var(--ease);
}
.textbtn svg { width: 15px; height: 15px; }
.textbtn:hover { color: var(--red); background: var(--red-tint); }

/* ══════════════ 卡片 ══════════════ */
.cards { display: flex; flex-direction: column; gap: 9px; }

.card {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 16px;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 14px 18px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  box-shadow: var(--sh-1);
  transition: transform .26s var(--ease),
              box-shadow .26s var(--ease),
              border-color .26s var(--ease);
  animation: cardIn .46s var(--ease-out) both;
}
@keyframes cardIn {
  from { opacity: 0; transform: translateY(10px) scale(.994); }
  to   { opacity: 1; transform: none; }
}
.card::before {
  content: '';
  position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: var(--red);
  transform: scaleY(0); transform-origin: top;
  transition: transform .3s var(--ease);
}
.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--sh-3);
  border-color: rgba(204,0,0,.22);
}
.card:hover::before { transform: scaleY(1); }
.card:active { transform: translateY(0) scale(.998); }

.c-main { min-width: 0; }
.c-top {
  display: flex; align-items: center; gap: 8px;
  margin-bottom: 5px; flex-wrap: wrap;
}
.c-author {
  font-size: 14px; font-weight: 640; color: var(--ink);
  letter-spacing: -.005em;
}
.c-title {
  font-size: 13px; color: var(--ink-2);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  min-width: 0; flex: 1;
}
.c-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 2px; }

.tag {
  font-size: 11px; font-weight: 550;
  padding: 2px 7px; border-radius: 5px;
  background: var(--bg-sunk); color: var(--ink-3);
  white-space: nowrap;
}
.tag.lot { background: #EEF4FF; color: #2E62C8; }
.tag.lock { background: var(--red-tint); color: var(--red); }
.tag.open { background: var(--green-tint); color: var(--green); }
.tag.qs { background: var(--amber-tint); color: var(--amber); font-family: var(--mono); }

/* 答案 —— 整页视觉重心 */
.c-answer {
  display: flex; flex-direction: column; align-items: flex-end;
  gap: 3px; min-width: 82px; text-align: right;
}
.c-open {
  font-size: 13px; font-weight: 600; color: var(--ink-4);
  letter-spacing: .02em;
  transition: color .26s var(--ease), transform .26s var(--ease);
}
.card:hover .c-open { color: var(--red); transform: translateX(2px); }
.ans-val {
  font: 700 21px/1.15 var(--mono);
  letter-spacing: .01em;
  color: var(--red);
  font-variant-numeric: tabular-nums;
  word-break: break-all;
  transition: transform .3s var(--ease);
}
.card:hover .ans-val { transform: scale(1.04); }
.ans-price {
  font: 500 11.5px/1 var(--mono);
  color: var(--ink-4);
}
.tag.cached { background: #EEF4FF; color: #2E62C8; }

/* 骨架屏 */
.skel {
  height: 72px; border-radius: var(--r-md);
  background: linear-gradient(100deg, #F2F0EC 30%, #FAF9F7 50%, #F2F0EC 70%);
  background-size: 220% 100%;
  animation: shimmer 1.4s ease-in-out infinite;
}
@keyframes shimmer {
  from { background-position: 180% 0; }
  to   { background-position: -20% 0; }
}

/* ══════════════ 空状态 ══════════════ */
.empty { text-align: center; padding: 72px 20px; }
.empty-mark {
  width: 54px; height: 54px; margin: 0 auto 16px;
  border-radius: 50%;
  background: var(--bg-sunk);
  display: grid; place-items: center;
  color: var(--ink-4);
}
.empty-mark svg { width: 24px; height: 24px; }
.empty-t { font-weight: 600; font-size: 15px; margin-bottom: 4px; }
.empty-s { font-size: 13px; color: var(--ink-3); }

/* ══════════════ 加载更多 ══════════════ */
.loadmore { text-align: center; padding: 24px 0; }
.loadmore-btn {
  border: 1px solid var(--line);
  background: var(--bg-card);
  color: var(--ink-2);
  font-size: 13.5px; font-weight: 550;
  padding: 9px 30px; border-radius: 10px;
  cursor: pointer;
  transition: all .24s var(--ease);
}
.loadmore-btn:hover {
  border-color: var(--red); color: var(--red);
  background: var(--red-tint);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(204,0,0,.12);
}

/* ══════════════ 作者网格 ══════════════ */
.author-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(228px, 1fr));
  gap: 11px;
}
.author-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 16px;
  cursor: pointer;
  box-shadow: var(--sh-1);
  transition: all .26s var(--ease);
  animation: cardIn .44s var(--ease-out) both;
}
.author-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--sh-3);
  border-color: rgba(204,0,0,.22);
}
.ac-name {
  font-size: 14.5px; font-weight: 640; margin-bottom: 6px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.ac-stats {
  display: flex; gap: 12px;
  font: 500 12px/1 var(--mono); color: var(--ink-3);
}
.ac-stats b { color: var(--red); font-weight: 650; }
.ac-last {
  margin-top: 9px; padding-top: 9px;
  border-top: 1px solid var(--line-2);
  font-size: 11.5px; color: var(--ink-4);
  font-family: var(--mono);
}

/* ══════════════ 面板（概览） ══════════════ */
.panel {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 22px;
  margin-bottom: 16px;
  box-shadow: var(--sh-2);
}
.panel-head { margin-bottom: 18px; }
.panel-head h3 { font-size: 15.5px; font-weight: 650; margin-bottom: 3px; }
.panel-head p { font-size: 13px; color: var(--ink-3); }

.lot-picker { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.lot-opt {
  display: flex; align-items: center; gap: 7px;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 8px 14px;
  cursor: pointer;
  font-size: 13.5px; font-weight: 520;
  color: var(--ink-2);
  transition: all .22s var(--ease);
  user-select: none;
}
.lot-opt input { display: none; }
.lot-opt:hover { border-color: var(--ink-4); }
.lot-opt.on {
  border-color: var(--red); background: var(--red-tint); color: var(--red);
}
.lot-opt .dot {
  width: 15px; height: 15px; border-radius: 5px;
  border: 1.6px solid currentColor;
  display: grid; place-items: center;
  transition: all .2s var(--ease);
}
.lot-opt.on .dot { background: var(--red); border-color: var(--red); }
.lot-opt.on .dot::after {
  content: ''; width: 7px; height: 4px;
  border-left: 1.8px solid #fff; border-bottom: 1.8px solid #fff;
  transform: rotate(-45deg) translateY(-1px);
}

.panel-act { display: flex; align-items: center; gap: 14px; }
.primary-btn {
  display: inline-flex; align-items: center; gap: 7px;
  border: none; cursor: pointer;
  background: linear-gradient(145deg, var(--red), var(--red-soft));
  color: #fff;
  font-size: 14px; font-weight: 600;
  padding: 10px 22px; border-radius: 11px;
  box-shadow: 0 3px 14px rgba(204,0,0,.26);
  transition: all .24s var(--ease);
}
.primary-btn svg { width: 16px; height: 16px; }
.primary-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 7px 22px rgba(204,0,0,.32);
}
.primary-btn:active { transform: translateY(0); }
.primary-btn:disabled {
  opacity: .55; cursor: not-allowed;
  transform: none; box-shadow: none;
}

.act-status { font-size: 13px; color: var(--ink-3); }

.prog { margin-top: 18px; }
.prog-track {
  height: 6px; border-radius: 4px;
  background: var(--bg-sunk); overflow: hidden;
}
.prog-fill {
  height: 100%; width: 0%;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--red), var(--red-soft));
  transition: width .5s var(--ease);
  position: relative;
}
.prog-fill::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.5), transparent);
  animation: progShine 1.5s linear infinite;
}
@keyframes progShine {
  from { transform: translateX(-100%); }
  to   { transform: translateX(100%); }
}
.prog-meta {
  display: flex; justify-content: space-between;
  margin-top: 8px;
  font: 500 12px/1 var(--mono); color: var(--ink-3);
}

.dist { display: flex; flex-direction: column; gap: 13px; }
.dist-item { display: flex; align-items: center; gap: 12px; }
.dist-name { width: 62px; font-size: 13px; color: var(--ink-2); flex-shrink: 0; }
.dist-bar {
  flex: 1; height: 8px; border-radius: 4px;
  background: var(--bg-sunk); overflow: hidden;
}
.dist-fill {
  height: 100%; border-radius: 4px;
  background: linear-gradient(90deg, var(--red), var(--red-soft));
  width: 0;
  transition: width .8s var(--ease);
}
.dist-num {
  width: 56px; text-align: right;
  font: 600 12.5px/1 var(--mono); color: var(--ink-3);
}

/* ══════════════ 抽屉 ══════════════ */
.mask {
  position: fixed; inset: 0; z-index: 80;
  background: rgba(26,26,26,.32);
  backdrop-filter: blur(3px);
  opacity: 0; pointer-events: none;
  transition: opacity .34s var(--ease);
}
.mask.on { opacity: 1; pointer-events: auto; }

.drawer {
  position: fixed; top: 0; right: 0; bottom: 0; z-index: 90;
  width: min(480px, 100vw);
  background: var(--bg-card);
  box-shadow: var(--sh-4);
  display: flex; flex-direction: column;
  transform: translateX(100%);
  transition: transform .42s var(--ease);
  will-change: transform;
}
.drawer.on { transform: none; }

.drawer-top {
  display: flex; align-items: flex-start; justify-content: space-between;
  gap: 14px;
  padding: 22px 22px 16px;
  border-bottom: 1px solid var(--line-2);
}
.drawer-head { min-width: 0; }
.dh-meta {
  display: flex; gap: 6px; flex-wrap: wrap;
  margin-bottom: 8px;
}
.dh-title {
  font-size: 15.5px; font-weight: 640; line-height: 1.4;
  letter-spacing: -.008em;
}
.closebtn {
  width: 30px; height: 30px; border-radius: 9px;
  border: 1px solid var(--line);
  background: var(--bg-card); color: var(--ink-3);
  display: grid; place-items: center; cursor: pointer;
  flex-shrink: 0;
  transition: all .22s var(--ease);
}
.closebtn svg { width: 14px; height: 14px; }
.closebtn:hover {
  background: var(--bg-sunk); color: var(--ink);
  transform: rotate(90deg);
}

.drawer-body { padding: 22px; overflow-y: auto; flex: 1; }

.answer-box {
  background: linear-gradient(150deg, var(--red-tint), #FFF9F9);
  border: 1px solid rgba(204,0,0,.14);
  border-radius: var(--r-md);
  padding: 20px;
  margin-bottom: 22px;
  position: relative;
}
.ab-label {
  display: block;
  font-size: 12px; font-weight: 600; color: var(--red);
  letter-spacing: .04em; opacity: .8;
  margin-bottom: 10px;
}
.ab-value {
  font: 700 32px/1.25 var(--mono);
  letter-spacing: .02em;
  color: var(--red);
  word-break: break-all;
}
.ab-value.pending { font-size: 15px; font-weight: 500; color: var(--ink-4); }
.ab-copy {
  position: absolute; top: 16px; right: 16px;
  display: inline-flex; align-items: center; gap: 4px;
  border: 1px solid rgba(204,0,0,.2);
  background: rgba(255,255,255,.7);
  color: var(--red);
  font-size: 11.5px; font-weight: 550;
  padding: 4px 9px; border-radius: 7px;
  cursor: pointer;
  transition: all .2s var(--ease);
}
.ab-copy svg { width: 12px; height: 12px; }
.ab-copy:hover { background: #fff; transform: translateY(-1px); }

.ab-retry {
  margin-top: 12px;
  border: 1px solid rgba(204,0,0,.24);
  background: rgba(255,255,255,.85);
  color: var(--red);
  font-size: 12.5px; font-weight: 600;
  padding: 6px 16px; border-radius: 8px;
  cursor: pointer;
  transition: all .22s var(--ease);
}
.ab-retry:hover { background: #fff; transform: translateY(-1px); }

.ab-value.pending {
  font-size: 14.5px; font-weight: 500;
  color: var(--ink-3);
  display: flex; align-items: center; gap: 8px;
}
.ab-value.pending::before {
  content: '';
  width: 13px; height: 13px; border-radius: 50%;
  border: 2px solid rgba(204,0,0,.2);
  border-top-color: var(--red);
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.facts { display: flex; flex-direction: column; gap: 0; }
.fact {
  display: flex; justify-content: space-between; align-items: center;
  padding: 12px 2px;
  border-bottom: 1px solid var(--line-2);
  font-size: 13.5px;
}
.fact:last-child { border-bottom: none; }
.fact dt { color: var(--ink-3); flex-shrink: 0; }
.fact dd {
  color: var(--ink); font-weight: 550;
  text-align: right; font-family: var(--mono); font-size: 12.5px;
}

/* ══════════════ Toast ══════════════ */
.toast {
  position: fixed; left: 50%; bottom: 34px; z-index: 200;
  transform: translate(-50%, 20px);
  background: rgba(26,26,26,.93);
  color: #fff;
  font-size: 13.5px; font-weight: 500;
  padding: 11px 20px; border-radius: 11px;
  box-shadow: var(--sh-3);
  opacity: 0; pointer-events: none;
  transition: all .32s var(--ease);
  backdrop-filter: blur(10px);
  max-width: 84vw; text-align: center;
}
.toast.on { opacity: 1; transform: translate(-50%, 0); }

/* ══════════════ 视图切换 ══════════════ */
.view { display: none; }
.view.active { display: block; animation: viewIn .4s var(--ease-out) both; }
@keyframes viewIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: none; }
}

/* ══════════════ 响应式 ══════════════ */
@media (max-width: 860px) {
  .topbar-inner { flex-wrap: wrap; gap: 12px; padding: 11px 16px; }
  .search-wrap { order: 3; flex-basis: 100%; max-width: none; }
  .topnav { margin-left: auto; }
  .shell { padding: 18px 16px 70px; }
  .hero { flex-wrap: wrap; gap: 14px; padding: 16px 8px; }
  .hero-div { display: none; }
  .hero-stat { flex: 1 1 40%; }
  .hs-num { font-size: 22px; }
  .frow { flex-wrap: wrap; }
  .flabel.ml { margin-left: 0; }
  .card { grid-template-columns: 1fr; gap: 10px; padding: 13px 15px; }
  .c-answer {
    align-items: flex-start; text-align: left;
    flex-direction: row; align-items: baseline; gap: 8px;
  }
  .ans-val { font-size: 19px; }
  .author-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
  .drawer { width: 100%; }
}

@media (max-width: 420px) {
  .navbtn { padding: 6px 10px; font-size: 13px; }
  .brand-name { display: none; }
  .ab-value { font-size: 26px; }
}

/* 减弱动效偏好 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  html { scroll-behavior: auto; }
}