/* ============================================================
   汉字拼音 · 四选一  ——  样式
   纸墨配色：米白纸面 + 墨黑字 + 朱红点缀
   ============================================================ */

:root {
  --paper: #f4f1e9;
  --card: #fffdf8;
  --ink: #211f1b;
  --ink-soft: #4a463f;
  --muted: #8d8577;
  --faint: #b6ac99;
  --line: #e7dfce;
  --line-strong: #d8cdb6;
  --accent: #b03a2c;
  --accent-deep: #94301f;
  --accent-soft: #f8e9e4;
  --ok: #276b4f;
  --ok-line: #8fc0a8;
  --ok-bg: #e9f3ed;
  --bad: #9d3227;
  --bad-line: #dfa79c;
  --bad-bg: #f9e8e3;
  --radius: 22px;
  --shadow: 0 26px 50px -34px rgba(64, 48, 28, .5), 0 2px 4px rgba(64, 48, 28, .05);

  --font-ui: "Segoe UI", -apple-system, BlinkMacSystemFont, "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --font-han: "Kaiti SC", "STKaiti", "KaiTi", "Songti SC", "STSong", "SimSun",
    "Noto Serif SC", "Source Han Serif SC", serif;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: var(--font-ui);
  font-size: 15px;
  line-height: 1.5;
  background:
    radial-gradient(1100px 560px at 12% -8%, #fffdf7 0%, rgba(255, 253, 247, 0) 58%),
    radial-gradient(900px 520px at 100% 0%, #f7eee0 0%, rgba(247, 238, 224, 0) 62%),
    var(--paper);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

button { font-family: inherit; }

.app {
  max-width: 720px;
  margin: 0 auto;
  padding: 42px 22px 58px;
}

/* ---------- 顶部 ---------- */

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 26px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 13px;
  min-width: 0;
}

.seal {
  flex: none;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 13px;
  background: linear-gradient(150deg, #c64a3a 0%, #a93325 60%, #8f2b1f 100%);
  color: #fff6f2;
  font-family: var(--font-han);
  font-size: 25px;
  line-height: 1;
  box-shadow: 0 8px 18px -10px rgba(150, 48, 32, .85), inset 0 1px 0 rgba(255, 255, 255, .28);
  padding-bottom: 2px;
}

.brand-text { min-width: 0; }

.brand-text h1 {
  margin: 0;
  font-size: 19px;
  font-weight: 650;
  letter-spacing: .015em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.brand-text p {
  margin: 3px 0 0;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--muted);
}

.ghost {
  flex: none;
  padding: 8px 13px;
  font-size: 12.5px;
  color: var(--muted);
  background: transparent;
  border: 1px solid transparent;
  border-radius: 10px;
  cursor: pointer;
  transition: color .15s, background .15s, border-color .15s;
}

.ghost:hover {
  color: var(--ink-soft);
  background: #fffdf8;
  border-color: var(--line);
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 2px;
  flex: none;
}

.ghost-badge {
  margin-left: 6px;
  padding: 1px 5px;
  font-size: 10px;
  font-weight: 600;
  line-height: 1.4;
  color: #fff6f2;
  background: var(--accent);
  border-radius: 999px;
  vertical-align: 1px;
}

.ghost:focus-visible,
.mode:focus-visible,
.radio input:focus-visible + span,
.opt:focus-visible,
.next:focus-visible,
.speak:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ---------- 题型切换 ---------- */

.modes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
  padding: 4px;
  margin-bottom: 20px;
  background: #ebe4d4;
  border: 1px solid #e1d7c2;
  border-radius: 14px;
  box-shadow: inset 0 1px 2px rgba(64, 48, 28, .05);
}

.mode {
  padding: 10px 8px;
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: .08em;
  color: #7b7365;
  background: transparent;
  border: 0;
  border-radius: 10px;
  cursor: pointer;
  touch-action: manipulation;
  transition: background .16s, color .16s, box-shadow .16s;
}

.mode:hover { color: var(--ink-soft); }

.mode[aria-pressed="true"] {
  color: var(--ink);
  background: var(--card);
  box-shadow: 0 2px 7px rgba(64, 48, 28, .1), 0 0 0 1px rgba(64, 48, 28, .03);
}

/* ---------- 出题配置 ---------- */

.config {
  display: flex;
  flex-direction: column;
  gap: 9px;
  margin-bottom: 6px;
}

.config-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.config-label {
  flex: none;
  width: 44px;
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--muted);
}

.config-options {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.radio { position: relative; display: inline-flex; }

.radio input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: 0;
  opacity: 0;
  pointer-events: none;
}

.radio span {
  display: inline-block;
  padding: 6px 12px;
  font-size: 12.5px;
  letter-spacing: .02em;
  color: var(--ink-soft);
  background: #fffdf8;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  cursor: pointer;
  touch-action: manipulation;
  transition: color .15s, background .15s, border-color .15s, box-shadow .15s;
}

.radio:hover span { border-color: #c9bca2; }

.radio input:checked + span {
  color: #fff;
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 7px 14px -10px rgba(176, 58, 44, .9);
}

/* ---------- 统计 ---------- */

.hud {
  display: flex;
  align-items: baseline;
  gap: 30px;
  padding: 18px 4px 22px;
}

.stat {
  display: flex;
  align-items: baseline;
  gap: 7px;
}

.stat-num {
  font-size: 21px;
  font-weight: 600;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
  letter-spacing: .01em;
}

.stat-label {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--muted);
}

.pool {
  margin-left: auto;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--muted);
}

.pool b {
  font-weight: 600;
  color: var(--ink-soft);
  font-variant-numeric: tabular-nums;
}

/* ---------- 题卡 ---------- */

.card {
  position: relative;
  padding: 26px 28px 22px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent) 0%, #c99a4e 42%, rgba(201, 154, 78, 0) 78%);
  opacity: .55;
}

.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.pill {
  padding: 3px 10px;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: .1em;
  border-radius: 6px;
  background: var(--accent-soft);
  color: var(--accent-deep);
}

.pill[data-level="2"] { background: #e6eef3; color: #2a5f7c; }
.pill[data-level="3"] { background: #ece9f4; color: #5b5085; }

.no {
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--faint);
  font-variant-numeric: tabular-nums;
}

/* 田字格 */

.glyph-box {
  position: relative;
  width: 208px;
  height: 208px;
  margin: 6px auto 20px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 16px;
  background: linear-gradient(180deg, #fffefb 0%, #fbf6ec 100%);
}

.glyph-box::before,
.glyph-box::after {
  content: "";
  position: absolute;
  opacity: .85;
}

.glyph-box::before {
  left: 50%;
  top: 7%;
  bottom: 7%;
  border-left: 1px dashed #e2d7c1;
}

.glyph-box::after {
  top: 50%;
  left: 7%;
  right: 7%;
  border-top: 1px dashed #e2d7c1;
}

.glyph {
  position: relative;
  z-index: 1;
  font-family: var(--font-han);
  font-size: 136px;
  line-height: 1;
  color: #1d1a15;
  user-select: none;
  transform: translateY(-1px);
}

.glyph.pop { animation: glyph-in .3s cubic-bezier(.22, .9, .3, 1.2); }

@keyframes glyph-in {
  from { opacity: 0; transform: scale(.88); }
  to { opacity: 1; transform: scale(1); }
}

/* 拼音 → 汉字：题面是拼音，换成长条卡片，不用田字格 */

.card[data-mode="toHanzi"] .glyph-box {
  width: min(340px, 86%);
  height: 190px;
  box-shadow: inset 0 0 0 5px #fffdf8, inset 0 0 0 6px #ece2cf;
}

.card[data-mode="toHanzi"] .glyph-box::before,
.card[data-mode="toHanzi"] .glyph-box::after { display: none; }

.card[data-mode="toHanzi"] .glyph {
  font-family: var(--font-ui);
  font-size: clamp(38px, 6.6vw, 56px);
  font-weight: 600;
  letter-spacing: .02em;
  color: #1d1a15;
  white-space: nowrap;
}

.ask {
  margin: 0 0 16px;
  text-align: center;
  font-size: 12.5px;
  letter-spacing: .22em;
  color: var(--muted);
}

/* ---------- 选项 ---------- */

.options {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.opt {
  position: relative;
  min-height: 60px;
  padding: 14px 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 21px;
  font-weight: 600;
  letter-spacing: .05em;
  color: var(--ink);
  background: #fffdf8;
  border: 1.5px solid var(--line);
  border-radius: 14px;
  cursor: pointer;
  user-select: none;
  touch-action: manipulation;
  transition: background .14s, border-color .14s, box-shadow .14s, transform .14s, color .14s;
}

.opt-index {
  position: absolute;
  top: 6px;
  left: 10px;
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0;
  color: #c8bca6;
}

.opt-body {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1px;
}

/* 答题后每个选项下方补出这个字的拼音 */
.opt-py {
  display: none;
  font-family: var(--font-ui);
  font-size: 12.5px;
  font-weight: 500;
  line-height: 1.3;
  letter-spacing: .01em;
  color: var(--muted);
}

.opt.is-revealed .opt-py { display: block; }

.opt-tag {
  margin-left: 3px;
  padding: 0 3px;
  font-size: 9.5px;
  line-height: 13px;
  letter-spacing: 0;
  color: #8a8275;
  background: #efe7d8;
  border-radius: 3px;
  vertical-align: 1px;
}

/* 拼音 → 汉字：选项是一个个汉字 */
.card[data-mode="toHanzi"] .opt {
  min-height: 78px;
  font-family: var(--font-han);
  font-size: 40px;
  font-weight: 500;
  letter-spacing: 0;
}

@media (hover: hover) {
  .opt:not(:disabled):hover {
    background: #fff;
    border-color: var(--line-strong);
    box-shadow: 0 8px 18px -14px rgba(60, 45, 25, .55);
    transform: translateY(-1px);
  }
}

.opt:not(:disabled):active { transform: translateY(0); }

.opt:disabled { cursor: default; }

.opt.is-correct {
  color: var(--ok);
  background: var(--ok-bg);
  border-color: var(--ok-line);
}

.opt.is-correct .opt-index { color: #79a890; }
.opt.is-correct .opt-py { color: #4f8a6f; }

.opt.is-correct::after {
  content: "✓";
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 15px;
  color: var(--ok);
}

.opt.is-wrong {
  color: var(--bad);
  background: var(--bad-bg);
  border-color: var(--bad-line);
  animation: shake .32s ease;
}

.opt.is-wrong .opt-index { color: #c58a7e; }
.opt.is-wrong .opt-py { color: #b06a5e; }

.opt.is-wrong::after {
  content: "✕";
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 14px;
  color: var(--bad);
}

/* 未选中的选项压低对比度，但保留可读的拼音 */
.opt.is-muted {
  color: #6f685c;
  background: #fdfbf6;
  border-color: #ece5d6;
}

.opt.is-muted .opt-py { color: #7b7365; }

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-4px); }
  60% { transform: translateX(4px); }
  85% { transform: translateX(-2px); }
}

/* ---------- 反馈 ---------- */

.feedback {
  min-height: 50px;
  margin: 12px 0 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: var(--ink-soft);
}

.feedback:empty { min-height: 50px; }

.fb-ok { color: var(--ok); font-weight: 600; letter-spacing: .03em; }
.fb-bad { color: var(--bad); font-weight: 600; letter-spacing: .03em; }

.fb-word {
  font-size: 17px;
  font-weight: 650;
  letter-spacing: .04em;
  color: var(--ink);
}

.fb-char {
  font-family: var(--font-han);
  font-size: 30px;
  font-weight: 600;
  line-height: 1;
  color: var(--ink);
}

.fb-py {
  font-size: 15px;
  letter-spacing: .04em;
  color: var(--muted);
}

.fb-multi {
  padding: 2px 9px;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--muted);
  background: #f5efe3;
  border-radius: 999px;
}

.fb-multi b { font-weight: 600; color: var(--ink-soft); }

.speak {
  width: 30px;
  height: 30px;
  display: inline-grid;
  place-items: center;
  color: var(--ink-soft);
  background: #fffdf8;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  cursor: pointer;
  transition: color .15s, border-color .15s, background .15s;
}

.speak:hover { color: var(--accent); border-color: var(--accent); background: var(--accent-soft); }

/* ---------- 下一题 ---------- */

.next {
  display: block;
  margin: 8px auto 0;
  padding: 12px 30px;
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: .06em;
  color: #fff8f4;
  background: var(--accent);
  border: none;
  border-radius: 12px;
  cursor: pointer;
  box-shadow: 0 14px 24px -16px rgba(150, 48, 32, .95);
  transition: background .15s, transform .15s, box-shadow .15s, opacity .15s;
}

.next:disabled {
  opacity: .32;
  cursor: default;
  box-shadow: none;
}

.next:not(:disabled):hover { background: var(--accent-deep); transform: translateY(-1px); }
.next:not(:disabled):active { transform: translateY(0); }

.next kbd {
  margin-left: 4px;
  padding: 1px 5px;
  font-family: inherit;
  font-size: 10.5px;
  color: rgba(255, 248, 244, .85);
  background: rgba(255, 255, 255, .16);
  border-radius: 4px;
}

/* ---------- 历史记录抽屉 ---------- */

.drawer-backdrop {
  position: fixed;
  inset: 0;
  z-index: 40;
  background: rgba(35, 30, 22, .34);
  opacity: 0;
  pointer-events: none;
  transition: opacity .22s ease;
}

.drawer-backdrop.show { opacity: 1; pointer-events: auto; }

.drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: 41;
  width: min(400px, 92vw);
  display: flex;
  flex-direction: column;
  background: var(--card);
  border-left: 1px solid var(--line);
  box-shadow: -30px 0 70px -40px rgba(60, 45, 25, .55);
  transform: translateX(100%);
  visibility: hidden;
  transition: transform .26s cubic-bezier(.22, .8, .3, 1), visibility 0s linear .26s;
}

.drawer.show {
  transform: translateX(0);
  visibility: visible;
  transition: transform .26s cubic-bezier(.22, .8, .3, 1), visibility 0s;
}

body.drawer-open { overflow: hidden; }

.drawer-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 16px 8px 18px;
}

.drawer-head h2 {
  margin: 0;
  font-size: 16px;
  font-weight: 650;
  letter-spacing: .06em;
}

.drawer-close {
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  padding: 0 0 2px;
  font-size: 21px;
  line-height: 1;
  color: var(--muted);
  background: transparent;
  border: 1px solid transparent;
  border-radius: 9px;
  cursor: pointer;
  transition: color .15s, background .15s;
}

.drawer-close:hover { color: var(--ink); background: #f5efe2; }

.drawer-close:focus-visible,
.drawer-foot .ghost:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.drawer-summary {
  margin: 0;
  padding: 0 18px 11px;
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
}

.drawer-list {
  flex: 1;
  overflow-y: auto;
  padding: 4px 10px 14px;
  overscroll-behavior: contain;
}

.drawer-empty {
  margin: 0;
  padding: 34px 12px;
  text-align: center;
  font-size: 13px;
  color: var(--muted);
}

.rec-day {
  padding: 12px 8px 5px;
  font-size: 10.5px;
  letter-spacing: .14em;
  color: var(--faint);
}

.rec {
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr);
  gap: 9px;
  padding: 9px 8px;
  border-bottom: 1px solid #f3ede1;
}

.rec:last-child { border-bottom: 0; }

.rec-icon {
  font-size: 13px;
  line-height: 1.7;
  text-align: center;
}

.rec.ok .rec-icon { color: var(--ok); }
.rec.bad .rec-icon { color: var(--bad); }

.rec-main { min-width: 0; }

.rec-top {
  display: flex;
  align-items: baseline;
  gap: 7px;
}

.rec-char {
  font-family: var(--font-han);
  font-size: 21px;
  line-height: 1.15;
  color: var(--ink);
}

.rec-py {
  font-size: 12.5px;
  letter-spacing: .02em;
  color: var(--muted);
}

.rec-mode,
.rec-multi {
  padding: 1px 4px;
  font-size: 9.5px;
  line-height: 1.4;
  letter-spacing: .02em;
  color: #8a8275;
  background: #f2ecdf;
  border-radius: 3px;
}

.rec-multi { color: var(--accent-deep); background: var(--accent-soft); }

.rec-time {
  margin-left: auto;
  font-size: 10.5px;
  color: var(--faint);
  font-variant-numeric: tabular-nums;
}

.rec-bottom {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 1px;
  font-size: 10.5px;
  color: var(--muted);
}

.rec-lv { font-weight: 600; }
.rec-lv[data-level="1"] { color: #a6392c; }
.rec-lv[data-level="2"] { color: #2a5f7c; }
.rec-lv[data-level="3"] { color: #5b5085; }

.rec-pick { color: var(--bad); }

.drawer-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 9px 16px 14px 18px;
  border-top: 1px solid var(--line);
}

.drawer-foot .ghost.danger { color: var(--bad); }

.drawer-foot .ghost.danger:hover:not(:disabled) {
  background: #fbeeea;
  border-color: #e8c3ba;
  color: var(--bad);
}

.ghost:disabled { opacity: .38; cursor: default; }

.drawer-note {
  font-size: 10.5px;
  letter-spacing: .02em;
  color: var(--faint);
}

/* ---------- 查字面板 ---------- */

.search-backdrop {
  position: fixed;
  inset: 0;
  z-index: 42;
  background: rgba(35, 30, 22, .34);
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s ease;
}

.search-backdrop.show { opacity: 1; pointer-events: auto; }

.search-panel {
  position: fixed;
  z-index: 43;
  top: 50%;
  left: 50%;
  width: min(560px, calc(100vw - 32px));
  max-height: min(80vh, 660px);
  display: flex;
  flex-direction: column;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: 0 30px 70px -36px rgba(60, 45, 25, .6), 0 2px 6px rgba(60, 45, 25, .06);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translate(-50%, calc(-50% + 10px));
  transition: opacity .2s ease, transform .24s cubic-bezier(.22, .8, .3, 1), visibility 0s linear .24s;
}

.search-panel.show {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translate(-50%, -50%);
  transition: opacity .2s ease, transform .24s cubic-bezier(.22, .8, .3, 1), visibility 0s;
}

body.search-open { overflow: hidden; }

.search-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 16px 9px 20px;
}

.search-head h2 {
  margin: 0;
  font-size: 16px;
  font-weight: 650;
  letter-spacing: .06em;
}

.search-form {
  display: flex;
  gap: 8px;
  padding: 0 18px 12px;
}

.search-input {
  flex: 1;
  min-width: 0;
  padding: 10px 13px;
  font-family: var(--font-ui);
  font-size: 14px;
  color: var(--ink);
  background: #fffdf8;
  border: 1.5px solid var(--line-strong);
  border-radius: 11px;
  outline: none;
  -webkit-appearance: none;
  transition: border-color .15s, box-shadow .15s;
}

.search-input::placeholder { color: var(--faint); }

.search-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(176, 58, 44, .12);
}

.search-submit {
  flex: none;
  padding: 0 18px;
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: .06em;
  color: #fff8f4;
  background: var(--accent);
  border: none;
  border-radius: 11px;
  cursor: pointer;
  transition: background .15s;
}

.search-submit:hover { background: var(--accent-deep); }

.search-hint {
  margin: 0;
  padding: 0 18px 12px;
  font-size: 11.5px;
  line-height: 1.7;
  letter-spacing: .02em;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
}

.search-result {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: 12px 12px 18px;
  overscroll-behavior: contain;
}

.search-result:empty { display: none; }

.search-note {
  margin: 2px 6px 10px;
  font-size: 12px;
  letter-spacing: .03em;
  color: var(--muted);
}

.search-sub-head {
  margin: 16px 6px 8px;
  font-size: 10.5px;
  letter-spacing: .14em;
  color: var(--faint);
}

.search-empty {
  margin: 22px 6px;
  text-align: center;
  font-size: 13px;
  color: var(--muted);
}

.search-err {
  margin: 6px;
  padding: 12px 14px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--bad);
  background: var(--bad-bg);
  border: 1px solid #eed4cc;
  border-radius: 10px;
}

.search-suggest-label {
  margin: 10px 6px 6px;
  font-size: 11.5px;
  color: var(--muted);
}

.search-suggests {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 0 4px;
}

.sugg {
  padding: 5px 12px;
  font-size: 12.5px;
  color: var(--accent-deep);
  background: var(--accent-soft);
  border: 1px solid #ecd0c8;
  border-radius: 999px;
  cursor: pointer;
  transition: background .15s;
}

.sugg:hover { background: #f3ddd6; }

.sugg:focus-visible,
.search-submit:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.search-hero {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 8px 8px 14px;
}

.hero-char {
  flex: none;
  width: 86px;
  height: 86px;
  display: grid;
  place-items: center;
  font-family: var(--font-han);
  font-size: 52px;
  line-height: 1;
  color: #1d1a15;
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  background: linear-gradient(180deg, #fffefb 0%, #fbf6ec 100%);
}

.hero-body { min-width: 0; }

.hero-py {
  font-size: 18px;
  line-height: 1.9;
  color: var(--ink);
}

.hero-py .is-main,
.hit-py .is-main { font-weight: 700; }

.hit-main {
  margin: 0 2px;
  padding: 0 4px;
  font-size: 9.5px;
  line-height: 14px;
  letter-spacing: 0;
  color: var(--accent-deep);
  background: var(--accent-soft);
  border-radius: 3px;
  vertical-align: 1px;
}

.hero-meta,
.hit-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 7px;
  margin-top: 2px;
  font-size: 10.5px;
  color: var(--muted);
}

.hero-meta { margin-top: 7px; gap: 8px; }

.hit-lv { font-weight: 600; }
.hit-lv[data-level="1"] { color: #a6392c; }
.hit-lv[data-level="2"] { color: #2a5f7c; }
.hit-lv[data-level="3"] { color: #5b5085; }

.hit-no { font-variant-numeric: tabular-nums; }

.hit-multi {
  padding: 0 4px;
  font-size: 9.5px;
  line-height: 14px;
  color: var(--accent-deep);
  background: var(--accent-soft);
  border-radius: 3px;
}

.hit-list { display: flex; flex-direction: column; }

.hit {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 8px;
  border-bottom: 1px solid #f3ede1;
}

.hit:last-child { border-bottom: 0; }

.hit-char {
  flex: none;
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  font-family: var(--font-han);
  font-size: 27px;
  line-height: 1;
  color: #1d1a15;
  background: #fbf6ec;
  border: 1px solid var(--line);
  border-radius: 10px;
}

.hit-body { min-width: 0; }

.hit-py {
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--ink-soft);
}

.hit-meta { margin-top: 1px; gap: 7px; }

.hit.is-muted { opacity: .62; }

/* 查字结果里的字可以点进字页：保持原排版，去掉链接下划线 */

a.hit {
  color: inherit;
  text-decoration: none;
  border-radius: 9px;
  transition: background .14s;
}

@media (hover: hover) {
  a.hit:hover { background: #faf5e9; }
}

a.hit:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}

a.hero-char {
  color: #1d1a15;
  text-decoration: none;
  transition: border-color .15s, background .15s;
}

a.hero-char:hover { border-color: var(--accent); background: #fff; }

a.hero-char:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.hit-page {
  padding: 1px 6px;
  font-size: 10.5px;
  letter-spacing: .02em;
  color: var(--accent-deep);
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: 5px;
  transition: background .15s, border-color .15s;
}

.hit-page:hover { background: var(--accent-soft); border-color: #ecd0c8; }

.hit-page:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.search-hero .hit-meta { margin-top: 7px; gap: 8px; }

.fb-page {
  padding: 3px 11px;
  font-size: 11.5px;
  letter-spacing: .04em;
  color: var(--accent-deep);
  text-decoration: none;
  background: var(--accent-soft);
  border: 1px solid #ecd0c8;
  border-radius: 999px;
  transition: background .15s, border-color .15s;
}

.fb-page:hover { background: #f3ddd7; border-color: #e0b9ae; }

.fb-page:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* 练习页顶部：返回首页 / 主站 */

.site-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
  font-size: 12px;
  letter-spacing: .04em;
}

.site-link {
  padding: 5px 7px;
  color: var(--muted);
  text-decoration: none;
  border-radius: 8px;
  transition: color .15s, background .15s;
}

.site-link:hover { color: var(--accent-deep); background: rgba(176, 58, 44, .07); }

.site-link:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ---------- 首页 ---------- */

.home {
  max-width: 860px;
  margin: 0 auto;
  padding: 34px 22px 56px;
}

.home-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.home-brand {
  display: flex;
  align-items: center;
  gap: 13px;
  min-width: 0;
  color: inherit;
  text-decoration: none;
}

.home-brand:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
  border-radius: 14px;
}

.home-brand-text {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.home-brand-name {
  font-size: 18px;
  font-weight: 650;
  letter-spacing: .02em;
  white-space: nowrap;
}

.home-brand-sub {
  margin-top: 2px;
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--muted);
}

.home-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: none;
}

.home-nav-link {
  padding: 8px 13px;
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--muted);
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: 10px;
  transition: color .15s, background .15s, border-color .15s;
}

.home-nav-link:hover {
  color: var(--ink-soft);
  background: #fffdf8;
  border-color: var(--line);
}

.home-nav-link.is-external { color: var(--accent-deep); }

.home-nav-link:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.home-hero {
  padding: 58px 0 6px;
  text-align: center;
}

.home-kicker {
  margin: 0 0 14px;
  font-size: 11.5px;
  letter-spacing: .18em;
  color: var(--accent-deep);
}

.home-hero h1 {
  margin: 0;
  font-family: var(--font-han);
  font-size: clamp(34px, 6.4vw, 52px);
  font-weight: 600;
  letter-spacing: .06em;
  line-height: 1.2;
}

.home-lead {
  max-width: 560px;
  margin: 14px auto 0;
  font-size: 13.5px;
  line-height: 1.95;
  letter-spacing: .01em;
  color: var(--muted);
}

.home-search {
  display: flex;
  gap: 8px;
  max-width: 560px;
  margin: 30px auto 0;
}

.home-search-input {
  flex: 1;
  min-width: 0;
  padding: 13px 16px;
  font-family: var(--font-ui);
  font-size: 14.5px;
  color: var(--ink);
  background: #fffdf8;
  border: 1.5px solid var(--line-strong);
  border-radius: 12px;
  outline: none;
  box-shadow: 0 14px 28px -24px rgba(64, 48, 28, .6);
  -webkit-appearance: none;
  transition: border-color .15s, box-shadow .15s;
}

.home-search-input::placeholder { color: var(--faint); }

.home-search-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(176, 58, 44, .12), 0 14px 28px -24px rgba(64, 48, 28, .6);
}

.home-search-submit {
  flex: none;
  padding: 0 22px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .08em;
  color: #fff8f4;
  background: var(--accent);
  border: none;
  border-radius: 12px;
  cursor: pointer;
  box-shadow: 0 14px 24px -16px rgba(150, 48, 32, .95);
  transition: background .15s, transform .15s;
}

.home-search-submit:hover { background: var(--accent-deep); transform: translateY(-1px); }
.home-search-submit:active { transform: translateY(0); }

.home-search-submit:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.home-examples {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: 12px;
  font-size: 11.5px;
  color: var(--faint);
}

.home-examples-label { letter-spacing: .08em; }

.home-examples button {
  padding: 4px 11px;
  font-size: 11.5px;
  color: var(--ink-soft);
  background: #fffdf8;
  border: 1px solid var(--line);
  border-radius: 999px;
  cursor: pointer;
  transition: color .15s, border-color .15s, background .15s;
}

.home-examples button:hover {
  color: var(--accent-deep);
  background: var(--accent-soft);
  border-color: #ecd0c8;
}

.home-examples button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.home-results {
  max-width: 640px;
  margin: 24px auto 0;
  padding: 4px 9px 6px;
  text-align: left;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: 0 20px 40px -32px rgba(64, 48, 28, .5);
}

.home-results:empty { display: none; }

.home-results .search-err,
.home-results .search-empty { margin: 8px 6px; }

.home-section { margin-top: 50px; }

.home-section h2 {
  margin: 0;
  font-size: 17px;
  font-weight: 650;
  letter-spacing: .05em;
}

.home-section-desc {
  margin: 6px 0 15px;
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--muted);
}

.home-grid {
  display: grid;
  gap: 10px;
}

.home-grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.home-grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.home-entry {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  color: inherit;
  text-decoration: none;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: 0 18px 32px -30px rgba(64, 48, 28, .45);
  transition: border-color .15s, background .15s, transform .15s, box-shadow .15s;
}

.home-entry:hover {
  background: #fffefb;
  border-color: var(--line-strong);
  transform: translateY(-2px);
  box-shadow: 0 22px 36px -28px rgba(64, 48, 28, .55);
}

.home-entry:focus-visible,
.home-level:focus-visible,
.home-page-link:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.home-entry-glyph {
  flex: none;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  font-family: var(--font-han);
  font-size: 25px;
  line-height: 1;
  color: var(--accent-deep);
  background: var(--accent-soft);
  border-radius: 12px;
}

.home-entry-body {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.home-entry-title {
  font-size: 14.5px;
  font-weight: 650;
  letter-spacing: .04em;
}

.home-entry-desc {
  font-size: 11.5px;
  line-height: 1.6;
  color: var(--muted);
}

.home-entry-go {
  margin-left: auto;
  font-size: 16px;
  color: var(--faint);
  transition: color .15s, transform .15s;
}

.home-entry:hover .home-entry-go { color: var(--accent); transform: translateX(2px); }

.home-level {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 18px 15px;
  color: inherit;
  text-decoration: none;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: 0 18px 32px -30px rgba(64, 48, 28, .45);
  transition: border-color .15s, background .15s, transform .15s, box-shadow .15s;
}

.home-level:hover {
  background: #fffefb;
  border-color: var(--line-strong);
  transform: translateY(-2px);
  box-shadow: 0 22px 36px -28px rgba(64, 48, 28, .55);
}

.home-level-tag {
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: .12em;
}

.home-level-tag[data-level="1"] { color: #a6392c; }
.home-level-tag[data-level="2"] { color: #2a5f7c; }
.home-level-tag[data-level="3"] { color: #5b5085; }

.home-level-num {
  font-size: 22px;
  font-weight: 650;
  font-variant-numeric: tabular-nums;
  letter-spacing: .01em;
}

.home-level-num small {
  margin-left: 3px;
  font-size: 11px;
  font-weight: 500;
  color: var(--muted);
}

.home-level-desc {
  font-size: 11px;
  letter-spacing: .02em;
  color: var(--muted);
}

.home-pages {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.home-page-link {
  display: inline-flex;
  align-items: center;
  padding: 9px 16px;
  font-size: 12.5px;
  letter-spacing: .03em;
  color: var(--accent-deep);
  text-decoration: none;
  background: var(--accent-soft);
  border: 1px solid #ecd0c8;
  border-radius: 999px;
  transition: background .15s, border-color .15s;
}

.home-page-link:hover { background: #f3ddd7; border-color: #e0b9ae; }

.home-note {
  margin: 13px 0 0;
  font-size: 11.5px;
  line-height: 1.85;
  color: var(--faint);
}

.home-foot {
  margin-top: 58px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  text-align: center;
  font-size: 11.5px;
  line-height: 2;
  letter-spacing: .02em;
  color: #9b9283;
}

.home-foot p { margin: 0; }

.home-foot a {
  color: var(--accent-deep);
  text-decoration: none;
}

.home-foot a:hover { text-decoration: underline; }

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- 页脚 / 提示 ---------- */

.foot {
  max-width: 560px;
  margin: 26px auto 0;
  text-align: center;
  font-size: 11.5px;
  line-height: 2;
  letter-spacing: .02em;
  color: #9b9283;
}

.foot p { margin: 0; }

kbd {
  display: inline-block;
  min-width: 17px;
  padding: 0 4px;
  font-family: var(--font-ui);
  font-size: 10.5px;
  line-height: 16px;
  text-align: center;
  color: var(--ink-soft);
  background: #fffdf8;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
}

.foot kbd { vertical-align: 1px; }

.foot code {
  padding: 1px 4px;
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 10.5px;
  color: var(--ink-soft);
  background: #efe9db;
  border-radius: 4px;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 30px;
  transform: translate(-50%, 14px);
  padding: 9px 18px;
  font-size: 13px;
  color: #fff8f2;
  background: rgba(38, 34, 28, .94);
  border-radius: 10px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s, transform .2s;
}

.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ---------- 窄屏 ---------- */

@media (max-width: 560px) {
  .app { padding: 26px 14px 44px; }
  .brand-text h1 { font-size: 17px; }
  .brand-text p { font-size: 11px; letter-spacing: .06em; }
  .seal { width: 40px; height: 40px; font-size: 22px; border-radius: 12px; }
  .ghost { padding: 7px 9px; }
  .top-actions { gap: 0; }
  .hide-sm { display: none; }

  .drawer {
    top: auto;
    left: 0;
    right: 0;
    width: auto;
    height: min(80vh, 620px);
    border-left: 0;
    border-top: 1px solid var(--line);
    border-radius: 18px 18px 0 0;
    box-shadow: 0 -24px 60px -34px rgba(60, 45, 25, .55);
    transform: translateY(100%);
  }

  .drawer.show { transform: translateY(0); }

  .hud {
    gap: 20px;
    flex-wrap: wrap;
    padding: 16px 2px 18px;
  }

  .pool { margin-left: 0; width: 100%; }

  .card { padding: 20px 16px 18px; border-radius: 18px; }

  .glyph-box { width: 168px; height: 168px; margin-bottom: 16px; }
  .glyph { font-size: 104px; }

  .ask { letter-spacing: .16em; margin-bottom: 13px; }

  .options { gap: 8px; }
  .opt { min-height: 56px; font-size: 19px; padding: 12px 10px; border-radius: 12px; }

  .modes { margin-bottom: 16px; }
  .mode { padding: 9px 6px; font-size: 12.5px; letter-spacing: .04em; }
  .card[data-mode="toHanzi"] .glyph-box { width: min(280px, 88%); height: 150px; }
  .card[data-mode="toHanzi"] .glyph { font-size: clamp(30px, 9.5vw, 42px); }
  .card[data-mode="toHanzi"] .opt { min-height: 66px; font-size: 34px; }

  .config { gap: 7px; }
  .config-row { flex-wrap: wrap; gap: 5px; }
  .config-label { width: 100%; }
  .config-options { gap: 5px; }
  .radio span { padding: 6px 10px; font-size: 12px; }

  .search-panel {
    top: auto;
    left: 0;
    right: 0;
    bottom: 0;
    width: auto;
    max-height: min(82vh, 640px);
    border-left: 0;
    border-right: 0;
    border-bottom: 0;
    border-radius: 18px 18px 0 0;
    transform: translateY(100%);
    box-shadow: 0 -24px 60px -34px rgba(60, 45, 25, .55);
  }

  .search-panel.show { transform: translateY(0); }

  .search-head { padding: 15px 14px 8px 16px; }
  .search-form { padding: 0 14px 10px; }
  .search-hint { padding: 0 14px 10px; }

  .hero-char { width: 72px; height: 72px; font-size: 44px; }
  .hero-py { font-size: 16.5px; }

  .feedback { font-size: 13.5px; }
  .fb-word { font-size: 16px; }

  .next { width: 100%; }

  .home { padding: 22px 15px 46px; }
  .home-header { flex-wrap: wrap; gap: 6px; }
  .home-nav { margin-left: -9px; }
  .home-nav-link { padding: 7px 11px; }
  .home-hero { padding-top: 34px; }
  .home-hero h1 { letter-spacing: .04em; }
  .home-lead { font-size: 13px; }
  .home-search { margin-top: 24px; }
  .home-search-input { padding: 12px 13px; font-size: 14px; }
  .home-search-submit { padding: 0 16px; }
  .home-section { margin-top: 40px; }
  .home-grid-2,
  .home-grid-3 { grid-template-columns: 1fr; }
  .home-entry { padding: 14px 15px; }
  .home-level { padding: 14px 16px; }
  .home-foot { margin-top: 44px; }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    transition-duration: .001ms !important;
  }
}