/* ============================================================
   Lexio — 液态玻璃设计系统
   dark 深紫 / light 淡黄，跟随系统，可手动覆盖
   ============================================================ */

/* ---------- 令牌 ---------- */
:root {
  /* 淡黄（light）—— 默认在裸 :root 上完整定义 */
  --bg:            #FAF6EE;
  --bg-deep:       #F0E9D8;
  --glass:         rgba(255, 255, 253, 0.30);
  --glass-2:       rgba(255, 255, 254, 0.34);
  --rim:           rgba(255, 255, 255, 1);
  --rim-soft:      rgba(255, 255, 255, 0.48);
  --shadow:        rgba(96, 68, 16, 0.20);
  --shadow-deep:   rgba(96, 68, 16, 0.30);
  --ink:           #24200F;
  --ink-2:         #6B5F3E;
  --ink-3:         #9A8C63;
  --accent:        #9A6318;
  --accent-ink:    #FFFDF5;
  --accent-soft:   rgba(168, 116, 42, 0.14);
  --line:          rgba(122, 92, 30, 0.14);
  --good:          #3E7A4F;
  --warn:          #B0742A;
  --bad:           #A8452E;

  /* 尺度 */
  --r-sm: 12px;
  --r-md: 20px;
  --r-lg: 30px;
  --r-xl: 40px;
  --blur: 40px;
  --ease: cubic-bezier(0.32, 0.72, 0, 1);   /* Apple sheet 曲线 */
  --dur: 0.42s;

  --font-display: 'Fraunces', 'Iowan Old Style', Georgia, serif;
  --font-ui: 'Instrument Sans', -apple-system, BlinkMacSystemFont, 'PingFang SC',
             'Hiragino Sans GB', sans-serif;
  --font-ipa: 'Charis SIL', 'Doulos SIL', 'Gentium Plus', Georgia,
              'Times New Roman', serif;

  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) {
    --bg:          #06030B;
    --bg-deep:     #030109;
    --glass:       rgba(28, 16, 48, 0.30);
    --glass-2:     rgba(58, 38, 92, 0.24);
    --rim:         rgba(226, 206, 255, 0.62);
    --rim-soft:    rgba(190, 160, 245, 0.18);
    --shadow:      rgba(0, 0, 0, 0.66);
    --shadow-deep: rgba(0, 0, 0, 0.86);
    --ink:         #F2ECFA;
    --ink-2:       #B0A0CC;
    --ink-3:       #7A6996;
    --accent:      #CBAAFF;
    --accent-ink:  #14081F;
    --accent-soft: rgba(203, 170, 255, 0.16);
    --line:        rgba(203, 170, 255, 0.13);
    --good:        #7ED9A0;
    --warn:        #F0C27A;
    --bad:         #FF9C8A;
    color-scheme: dark;
  }
}

:root[data-theme='dark'] {
  --bg:          #06030B;
  --bg-deep:     #030109;
  --glass:       rgba(28, 16, 48, 0.30);
  --glass-2:     rgba(58, 38, 92, 0.24);
  --rim:         rgba(226, 206, 255, 0.62);
  --rim-soft:    rgba(190, 160, 245, 0.18);
  --shadow:      rgba(0, 0, 0, 0.66);
  --shadow-deep: rgba(0, 0, 0, 0.86);
  --ink:         #F2ECFA;
  --ink-2:       #B0A0CC;
  --ink-3:       #7A6996;
  --accent:      #CBAAFF;
  --accent-ink:  #14081F;
  --accent-soft: rgba(203, 170, 255, 0.16);
  --line:        rgba(203, 170, 255, 0.13);
  --good:        #7ED9A0;
  --warn:        #F0C27A;
  --bad:         #FF9C8A;
  color-scheme: dark;
}


/* ---------- 高对比主题（IDE 风格） ----------
   语法高亮的逻辑：不同成分用不同颜色区分，对比拉满，界面扁平不玻璃。
   所以这两个主题里玻璃几乎不透明——通透感和高可读性本来就互斥。 */
:root[data-theme='contrast-dark'] {
  --bg:          #0D1117;
  --bg-deep:     #010409;
  --glass:       rgba(22, 27, 34, 0.94);
  --glass-2:     rgba(33, 38, 45, 0.92);
  --rim:         rgba(139, 148, 158, 0.55);
  --rim-soft:    rgba(48, 54, 61, 0.95);
  --shadow:      rgba(1, 4, 9, 0.80);
  --shadow-deep: rgba(1, 4, 9, 0.95);
  --ink:         #E6EDF3;
  --ink-2:       #9198A1;
  --ink-3:       #6E7681;
  --accent:      #58A6FF;
  --accent-ink:  #05070A;
  --accent-soft: rgba(56, 139, 253, 0.16);
  --line:        #30363D;
  --good:        #3FB950;
  --warn:        #D29922;
  --bad:         #F85149;
  --pos:         #FF7B72;      /* 词性：像关键字 */
  --syn:         #7EE787;      /* 同义词：像字符串 */
  --blur: 0px;
  color-scheme: dark;
}

:root[data-theme='contrast-light'] {
  --bg:          #FFFFFF;
  --bg-deep:     #F6F8FA;
  --glass:       rgba(255, 255, 255, 0.96);
  --glass-2:     rgba(246, 248, 250, 0.96);
  --rim:         rgba(255, 255, 255, 1);
  --rim-soft:    #D1D9E0;
  --shadow:      rgba(31, 35, 40, 0.14);
  --shadow-deep: rgba(31, 35, 40, 0.22);
  --ink:         #1F2328;
  --ink-2:       #59636E;
  --ink-3:       #818B98;
  --accent:      #0969DA;
  --accent-ink:  #FFFFFF;
  --accent-soft: rgba(9, 105, 218, 0.10);
  --line:        #D1D9E0;
  --good:        #1A7F37;
  --warn:        #9A6700;
  --bad:         #CF222E;
  --pos:         #CF222E;
  --syn:         #0A3069;
  --blur: 0px;
  color-scheme: light;
}

/* 高对比下取消玻璃：扁平、实心、边框清晰 */
:root[data-theme^='contrast'] .glass {
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border: 1px solid var(--rim-soft);
  border-radius: 10px;
  box-shadow: 0 1px 0 var(--shadow);
}
:root[data-theme^='contrast'] .glass::before,
:root[data-theme^='contrast'] .glass::after { display: none; }
:root[data-theme^='contrast'] .auth { border-radius: 12px; }
:root[data-theme^='contrast'] .btn { border-radius: 8px; }
:root[data-theme^='contrast'] .sheet { border-radius: 12px 12px 0 0; }
:root[data-theme^='contrast'] .tabbar { border-radius: 12px; }
:root[data-theme^='contrast'] .drift { display: none; }
:root[data-theme^='contrast'] .sense__pos { color: var(--pos); }
:root[data-theme^='contrast'] .sense__syn { color: var(--syn); }
:root[data-theme^='contrast'] .headword,
:root[data-theme^='contrast'] .auth__mark { letter-spacing: -0.01em; }
:root[data-theme^='contrast'] .example__en {
  font-family: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, monospace;
  font-size: 0.94rem;
}

/* ---------- 基础 ---------- */
* { box-sizing: border-box; }

html, body {
  margin: 0; height: 100%;
  overscroll-behavior-y: none;
}

body {
  background: var(--bg);
  touch-action: manipulation;          /* 禁掉双击放大 */
  color: var(--ink);
  font-family: var(--font-ui);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
  padding: env(safe-area-inset-top) env(safe-area-inset-right)
           env(safe-area-inset-bottom) env(safe-area-inset-left);
}

button, input, select { font: inherit; color: inherit; }
button { border: 0; background: none; cursor: pointer; }
a { color: var(--accent); text-decoration: none; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 6px;
}

/* ---------- 烟雾背景 ---------- */
#smoke {
  position: fixed; inset: 0;
  width: 100%; height: 100%;
  z-index: -2;
  display: block;
}
#smoke.smoke--fallback {
  background:
    radial-gradient(60% 50% at 30% 25%, var(--glass-2), transparent 70%),
    radial-gradient(70% 60% at 75% 70%, var(--accent-soft), transparent 72%),
    linear-gradient(160deg, var(--bg), var(--bg-deep));
}

#drift-layer {
  position: fixed; inset: 0;
  z-index: -1; pointer-events: none;
  overflow: hidden;
}

/* 签名：雾中浮沉的单词 */
.drift {
  position: absolute;
  font-family: var(--font-display);
  font-variation-settings: 'SOFT' 40, 'WONK' 1, 'opsz' 108;
  font-weight: 300;
  color: var(--ink);
  opacity: 0;
  white-space: nowrap;
  filter: blur(2.2px);
  animation: drift-fade 16s var(--ease) forwards;
}
@keyframes drift-fade {
  0%   { opacity: 0;    transform: translate(0, 0) scale(0.98); }
  28%  { opacity: 0.22; }
  62%  { opacity: 0.18; }
  100% { opacity: 0;
         transform: translate(var(--drift-x), var(--drift-y)) scale(1.04); }
}

/* ---------- 玻璃 ---------- */
/* Liquid Glass 的三个必要条件：
   1) 背后有可折射的形体（由 smoke.js 的光球提供）
   2) 镶边不是均匀的——光从一侧掠过，一侧亮一侧暗
   3) 有厚度：内侧顶缘高光、底缘暗压 */
.glass {
  position: relative;
  isolation: isolate;
  background: var(--glass);
  backdrop-filter: blur(var(--blur)) saturate(210%) brightness(1.06);
  -webkit-backdrop-filter: blur(var(--blur)) saturate(210%) brightness(1.06);
  border: 0;
  border-radius: var(--r-lg);
  box-shadow:
    0 1px 0 var(--rim) inset,                     /* 顶缘：光打在玻璃上表面 */
    0 -1px 0 rgba(0, 0, 0, 0.10) inset,           /* 底缘：厚度的暗侧 */
    0 32px 64px -24px var(--shadow-deep),
    0 12px 28px -12px var(--shadow);
}

/* 渐变镶边：用 mask 只保留 1px 边框，从左上到右下由亮转暗。
   均匀的 1px border 是塑料，渐变的才是玻璃。 */
.glass::after {
  content: '';
  position: absolute; inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(142deg,
    var(--rim) 0%,
    var(--rim-soft) 26%,
    transparent 52%,
    var(--rim-soft) 88%,
    var(--rim) 100%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  z-index: 1;
}

/* 镜面：一道斜掠而过的高光，只覆盖左上角 */
.glass::before {
  content: '';
  position: absolute; inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background:
    radial-gradient(120% 80% at 8% -10%,
      color-mix(in srgb, var(--rim) 62%, transparent) 0%, transparent 46%),
    radial-gradient(90% 60% at 108% 112%,
      color-mix(in srgb, var(--rim) 24%, transparent) 0%, transparent 40%);
  z-index: 0;
}

.glass > * { position: relative; z-index: 2; }

@media (prefers-reduced-transparency: reduce) {
  .glass {
    backdrop-filter: none; -webkit-backdrop-filter: none;
    background: var(--bg-deep);
  }
  .glass::before { display: none; }
}

/* ---------- 排版 ---------- */
.display {
  font-family: var(--font-display);
  font-variation-settings: 'SOFT' 28, 'WONK' 1, 'opsz' 120;
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.05;
}
.ipa {
  font-family: var(--font-ipa);
  color: var(--ink-2);
  letter-spacing: 0.01em;
}
.eyebrow {
  font-size: 0.72rem; font-weight: 600;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink-3);
}
.num { font-variant-numeric: tabular-nums; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 0.5rem;
  min-height: 52px; padding: 0 1.5rem;
  border-radius: var(--r-md);
  font-weight: 600; font-size: 1rem;
  transition: transform 0.18s var(--ease), background 0.2s, opacity 0.2s;
}
.btn:active { transform: scale(0.972); }
.btn[disabled] { opacity: 0.45; pointer-events: none; }

.btn--primary {
  background: var(--accent); color: var(--accent-ink);
  box-shadow: 0 8px 22px -8px var(--accent), 0 1px 0 var(--rim) inset;
  width: 100%;
}
.btn--ghost {
  background: var(--glass-2);
  border: 1px solid var(--rim-soft);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  color: var(--ink);
  width: 100%;
}
.btn--quiet { color: var(--ink-2); min-height: 40px; padding: 0 0.5rem; }
.btn--quiet:hover { color: var(--ink); }

/* ---------- 登录页 ---------- */
.auth-wrap {
  min-height: 100dvh;
  display: grid; place-items: center;
  padding: 1.5rem;
}
.auth {
  width: min(400px, 100%);
  padding: 2.5rem 2rem 2rem;
  border-radius: var(--r-xl);
  animation: rise var(--dur) var(--ease) both;
}
@keyframes rise {
  from { opacity: 0; transform: translateY(14px) scale(0.985); }
  to   { opacity: 1; transform: none; }
}
@media (prefers-reduced-motion: reduce) {
  .auth { animation: none; }
  .drift { display: none; }
}

.auth__mark {
  font-family: var(--font-display);
  font-variation-settings: 'SOFT' 20, 'WONK' 1, 'opsz' 144;
  font-weight: 600;
  font-size: clamp(2.6rem, 12vw, 3.4rem);
  letter-spacing: -0.035em;
  line-height: 1;
  margin: 0;
}
.auth__count {
  margin: 0.55rem 0 2rem;
  color: var(--ink-2); font-size: 0.94rem;
}
.auth__count b { color: var(--ink); font-weight: 600; }
.auth__actions { display: grid; gap: 0.7rem; }
.auth__note {
  margin: 1.4rem 0 0;
  font-size: 0.85rem; color: var(--ink-3); line-height: 1.5;
}
.auth__err {
  margin-top: 1rem; padding: 0.7rem 0.9rem;
  border-radius: var(--r-sm);
  background: color-mix(in srgb, var(--bad) 14%, transparent);
  color: var(--bad); font-size: 0.88rem;
}

.field {
  display: grid; gap: 0.4rem; margin-bottom: 0.9rem; text-align: left;
}
.field label { font-size: 0.82rem; color: var(--ink-2); font-weight: 500; }
.field input {
  min-height: 50px; padding: 0 0.9rem;
  border-radius: var(--r-sm);
  border: 1px solid var(--line);
  background: var(--glass-2);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
}
.field input:focus { border-color: var(--accent); outline: none; }

/* ---------- 应用外壳 ---------- */
.shell { min-height: 100dvh; display: flex; flex-direction: column; }
.view {
  flex: 1;
  padding: 1rem 1rem calc(84px + env(safe-area-inset-bottom));
  max-width: 620px; margin: 0 auto; width: 100%;
}

.topbar {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between;
  gap: 0.75rem; padding: 0.75rem 1rem;
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--line);
}
.topbar h1 {
  margin: 0; font-family: var(--font-display); font-size: 1.15rem;
  font-variation-settings: 'SOFT' 20, 'WONK' 1;
}

.tabbar {
  position: fixed; left: 50%; transform: translateX(-50%);
  bottom: calc(0.7rem + env(safe-area-inset-bottom));
  z-index: 30;
  display: flex; gap: 0.15rem; padding: 0.35rem;
  border-radius: 999px;
  width: min(420px, calc(100% - 2rem));
}
.tabbar button {
  flex: 1; display: grid; gap: 2px; place-items: center;
  padding: 0.5rem 0.2rem; border-radius: 999px;
  font-size: 0.68rem; color: var(--ink-3); font-weight: 500;
  transition: color 0.2s, background 0.25s var(--ease);
}
.tabbar button svg { width: 21px; height: 21px; }
.tabbar button[aria-current='page'] {
  color: var(--accent); background: var(--accent-soft);
}

/* ---------- 卡片 ---------- */
.card {
  padding: 1.4rem 1.25rem;
  border-radius: var(--r-lg);
  margin-bottom: 0.9rem;
}
.card__head { display: flex; align-items: baseline; gap: 0.7rem; flex-wrap: wrap; }

.headword {
  font-family: var(--font-display);
  font-variation-settings: 'SOFT' 24, 'WONK' 1, 'opsz' 120;
  font-size: clamp(2rem, 9vw, 2.9rem);
  font-weight: 500; letter-spacing: -0.025em; line-height: 1.08;
  margin: 0;
}

.sense { margin: 0.5rem 0; display: flex; gap: 0.5rem; align-items: baseline; }
.sense__pos {
  font-style: italic; font-weight: 600; color: var(--accent);
  font-size: 0.88rem; flex: none;
}
.sense__syn { color: var(--ink-3); font-size: 0.85em; margin-left: 0.35rem; }

.example {
  margin-top: 0.9rem; padding-left: 0.85rem;
  border-left: 2px solid var(--line);
}
.example__en { line-height: 1.6; }
.example__cn { color: var(--ink-2); font-size: 0.9rem; margin-top: 0.15rem; }
.example__tag {
  font-size: 0.65rem; color: var(--ink-3); letter-spacing: 0.08em;
  text-transform: uppercase; margin-left: 0.4rem;
}

.meta-row {
  display: flex; gap: 0.4rem; flex-wrap: wrap;
  margin-top: 1rem; padding-top: 0.85rem; border-top: 1px solid var(--line);
  font-size: 0.85rem; color: var(--ink-2);
}
.chip {
  display: inline-flex; align-items: center; gap: 0.3rem;
  padding: 0.25rem 0.6rem; border-radius: 999px;
  background: var(--accent-soft); color: var(--ink-2);
  font-size: 0.75rem;
}

.blank {
  display: inline-block; min-width: 4.5em;
  border-bottom: 2px solid var(--accent);
  color: transparent;
}

/* ---------- 评分 ---------- */
.rate { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0.5rem; }
.rate button {
  padding: 0.85rem 0.3rem; border-radius: var(--r-md);
  background: var(--glass-2); border: 1px solid var(--rim-soft);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  display: grid; gap: 2px; text-align: center;
  transition: transform 0.16s var(--ease);
}
.rate button:active { transform: scale(0.95); }
.rate b { font-size: 0.9rem; font-weight: 600; }
.rate small { font-size: 0.66rem; color: var(--ink-3); }
.rate .r1 b { color: var(--bad); }
.rate .r2 b { color: var(--warn); }
.rate .r3 b { color: var(--good); }
.rate .r4 b { color: var(--accent); }

/* ---------- 音频按钮 ---------- */
.speak {
  display: inline-grid; place-items: center;
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--accent-soft); color: var(--accent);
  flex: none; transition: transform 0.16s var(--ease);
}
.speak:active { transform: scale(0.9); }
.speak[data-playing='1'] { animation: pulse 1.1s ease-in-out infinite; }
@keyframes pulse { 50% { box-shadow: 0 0 0 8px var(--accent-soft); } }

/* ---------- 词义面板（底部 sheet） ---------- */
.sheet-scrim {
  position: fixed; inset: 0; z-index: 90;
  background: rgba(0, 0, 0, 0.28);
  backdrop-filter: blur(2px); -webkit-backdrop-filter: blur(2px);
  opacity: 0; transition: opacity var(--dur) var(--ease);
}
.sheet-scrim[data-open='1'] { opacity: 1; }

.sheet {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 100;
  max-height: 88dvh; height: 55dvh;
  border-radius: var(--r-xl) var(--r-xl) 0 0;
  padding: 0.5rem 1.15rem calc(1.4rem + env(safe-area-inset-bottom));
  overflow-y: auto; -webkit-overflow-scrolling: touch;
  transform: translateY(100%);
  transition: transform var(--dur) var(--ease), height var(--dur) var(--ease);
  will-change: transform;
}
.sheet[data-open='1'] { transform: translateY(0); }
.sheet[data-expanded='1'] { height: 88dvh; }

.sheet__grip {
  width: 38px; height: 5px; border-radius: 3px;
  background: var(--ink-3); opacity: 0.4;
  margin: 0.35rem auto 0.9rem;
}
.sheet__head {
  display: flex; align-items: flex-start; gap: 0.6rem; margin-bottom: 0.5rem;
}
.sheet__head .headword { flex: 1; }
.sheet__skeleton { display: grid; gap: 0.6rem; margin-top: 1rem; }
.sheet__skeleton i {
  display: block; height: 13px; border-radius: 7px;
  background: var(--glass-2);
  animation: shimmer 1.5s ease-in-out infinite;
}
.sheet__skeleton i:nth-child(2) { width: 82%; }
.sheet__skeleton i:nth-child(3) { width: 64%; }
@keyframes shimmer { 50% { opacity: 0.45; } }

.sheet__section { margin-top: 1.15rem; }
.sheet__section h4 {
  margin: 0 0 0.45rem; font-size: 0.72rem; font-weight: 600;
  letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-3);
}

.fav {
  display: inline-grid; place-items: center;
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--glass-2); border: 1px solid var(--rim-soft);
  color: var(--ink-2); flex: none;
  transition: transform 0.16s var(--ease), color 0.2s;
}
.fav:active { transform: scale(0.9); }
.fav[data-on='1'] { color: var(--accent); background: var(--accent-soft); }

/* 正文中可点的词 */
.tok { cursor: pointer; border-radius: 4px; padding: 0 1px; }
.tok--sel {
  background: var(--accent-soft);
  box-shadow: 0 0 0 2px var(--accent-soft);
}

/* ---------- 杂项 ---------- */
.empty { text-align: center; padding: 3rem 1rem; color: var(--ink-2); }
.empty .display { font-size: 1.5rem; margin-bottom: 0.5rem; color: var(--ink); }
.spinner {
  width: 22px; height: 22px; border-radius: 50%;
  border: 2px solid var(--accent-soft); border-top-color: var(--accent);
  animation: spin 0.7s linear infinite; margin: 2rem auto;
}
@keyframes spin { to { transform: rotate(360deg); } }

.list-row {
  display: flex; align-items: center; gap: 0.75rem;
  padding: 0.8rem 0.25rem; border-bottom: 1px solid var(--line);
}
.list-row:last-child { border-bottom: 0; }
.list-row__main { flex: 1; min-width: 0; }
.list-row__word { font-weight: 600; }
.list-row__gloss {
  color: var(--ink-2); font-size: 0.85rem;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}

.stat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.6rem; }
.stat { padding: 0.9rem 0.6rem; border-radius: var(--r-md); text-align: center; }
.stat b { display: block; font-size: 1.5rem; font-weight: 600; }
.stat small { color: var(--ink-3); font-size: 0.7rem; }

.bar {
  display: flex; align-items: flex-end; gap: 6px;
  height: 108px; margin-top: 0.9rem;
}
.bar__col {
  flex: 1; display: flex; flex-direction: column;
  align-items: center; justify-content: flex-end; height: 100%; gap: 4px;
}
.bar__n { font-size: 0.7rem; color: var(--ink-2); height: 1em; }
.bar__fill {
  width: 100%; background: var(--accent);
  border-radius: 4px 4px 2px 2px; opacity: 0.8;
  transition: height 0.5s var(--ease);
}
.bar__d { font-size: 0.66rem; color: var(--ink-3); }
.muted { color: var(--ink-2); font-size: 0.9rem; margin: 0.6rem 0 0; }

.toast {
  position: fixed; left: 50%; transform: translateX(-50%) translateY(20px);
  bottom: calc(96px + env(safe-area-inset-bottom)); z-index: 200;
  padding: 0.7rem 1.1rem; border-radius: 999px;
  font-size: 0.88rem; opacity: 0; pointer-events: none;
  transition: opacity 0.25s, transform 0.25s var(--ease);
}
.toast[data-show='1'] { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---------- 查词页 ---------- */
.search-input {
  width: 100%; min-height: 52px; padding: 0 1rem;
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  background: var(--glass-2);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  font-size: 1.05rem;
}
.search-input:focus { border-color: var(--accent); outline: none; }
.speak--sm { width: 34px; height: 34px; }

/* ---------- 视图切换 ---------- */
/* 之前直接换 DOM，视觉上是硬切。给内容一个短促的淡入位移。 */
.view, .auth-wrap > .auth {
  animation: view-in 0.34s var(--ease) both;
}
@keyframes view-in {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: none; }
}
.card {
  animation: card-in 0.4s var(--ease) both;
}
.card:nth-child(2) { animation-delay: 0.04s; }
.card:nth-child(3) { animation-delay: 0.08s; }
.card:nth-child(4) { animation-delay: 0.12s; }
@keyframes card-in {
  from { opacity: 0; transform: translateY(10px) scale(0.995); }
  to   { opacity: 1; transform: none; }
}
.tabbar button { transition: color .2s, background .25s var(--ease), transform .15s var(--ease); }
.tabbar button:active { transform: scale(0.92); }

@media (prefers-reduced-motion: reduce) {
  .view, .auth-wrap > .auth, .card { animation: none; }
}

/* 输入框与可选文本仍允许长按选择 */
input, textarea, .tok { touch-action: auto; }

/* ---------- 作答输入 ---------- */
.answer { display: flex; gap: 0.5rem; margin-top: 0.5rem; flex-wrap: wrap; }
.answer__input {
  flex: 1 1 60%; min-height: 52px; padding: 0 1rem;
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  background: var(--glass-2);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  font-size: 1.05rem; letter-spacing: 0.01em;
}
.answer__input:focus { border-color: var(--accent); outline: none; }
.answer__input:disabled { opacity: 1; }
.answer .btn { flex: 0 0 auto; width: auto; }
.answer[data-result='right'] .answer__input { border-color: var(--good); }
.answer[data-result='wrong'] .answer__input { border-color: var(--bad); }
.answer__mark { flex: 1 1 100%; font-size: 0.95rem; }
.answer__ok { color: var(--good); font-weight: 600; }
.answer__no { color: var(--bad); font-weight: 600; }
.answer__mark s { color: var(--ink-3); }
.answer__mark b { color: var(--ink); }

.rate--suggest {
  box-shadow: 0 0 0 2px var(--accent) inset;
}

/* ---------- 主页统计 ---------- */
.hero__row { display: flex; align-items: baseline; gap: 0.5rem; margin: 0.3rem 0 0.2rem; }
.hero__num { font-size: clamp(3rem, 16vw, 4.2rem); line-height: 1; }
.hero__unit { color: var(--ink-2); font-size: 1rem; }
.bar--slim { height: 76px; gap: 3px; }
.bar--slim .bar__fill { border-radius: 3px 3px 1px 1px; }
.seg {
  display: flex; height: 12px; border-radius: 999px;
  overflow: hidden; margin-top: 0.8rem; gap: 2px;
}
.seg__part { min-width: 4px; }
.seg__legend {
  display: flex; justify-content: space-between; gap: 0.5rem;
  margin-top: 0.5rem; font-size: 0.72rem; color: var(--ink-3);
}
.prog {
  height: 4px; border-radius: 999px; margin-top: 0.45rem;
  background: var(--accent-soft); overflow: hidden;
}
.prog__fill {
  height: 100%; background: var(--accent); border-radius: 999px;
  transition: width 0.6s var(--ease);
}

.answer__base { color: var(--ink-3); font-size: 0.85em; margin-left: 0.35rem; }

/* 开关型 chip：靠描边和填充表达状态，别只靠透明度 */
.chip--toggle {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink-3);
  padding: 0.35rem 0.7rem;
  transition: background .2s, color .2s, border-color .2s, transform .14s var(--ease);
}
.chip--toggle:active { transform: scale(0.94); }
.chip--toggle[data-on='1'] {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
  font-weight: 600;
}