/* =========================================================
   拾读 SHIDU · CET-4 Reading Studio
   Editorial reading experience with instant word lookup
   ========================================================= */

:root {
  --bg: #f2eee4;
  --bg-deep: #e9e2d4;
  --paper: #fdfbf6;
  --paper-raised: #fffdf9;
  --ink: #1d2b25;
  --ink-soft: #56645b;
  --ink-faint: #8b928a;
  --line: #e7dfd1;
  --line-strong: #d6ccba;
  --green: #245a46;
  --green-deep: #193f31;
  --green-contrast: #fbf8f0;
  --sage: #e8eee2;
  --sage-deep: #dbe4d4;
  --quiz: #edf1e7;
  --accent: #bc5736;
  --accent-deep: #9e4427;
  --accent-soft: #f4e3d9;
  --gold: #a98438;
  --marker: #f0dfa6;
  --correct: #356c51;
  --correct-bg: #dfeddf;
  --wrong: #a84b2f;
  --wrong-bg: #f5e3da;
  --shadow-card: 0 1px 2px rgba(29, 43, 37, .025), 0 22px 60px -34px rgba(29, 43, 37, .28);
  --shadow-pop: 0 28px 70px -24px rgba(17, 33, 25, .38), 0 4px 16px -8px rgba(17, 33, 25, .18);
  --font-en: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Georgia, "Times New Roman", serif;
  --font-ui: "Segoe UI", "Inter", "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-zh-serif: "Songti SC", "STSong", "Noto Serif CJK SC", "SimSun", serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --page-width: 1280px;
  --page-gutter: max(20px, calc((100vw - var(--page-width)) / 2 + 32px));
  --reading-base: 19px;
  --reading-size: calc(var(--reading-base) * var(--type-scale));
  --type-scale: 1;
  color-scheme: light;
}

/* 字号档位：正文与答题卡同一套比例 */
html[data-size="small"] { --type-scale: .88; }
html[data-size="base"] { --type-scale: 1; }
html[data-size="large"] { --type-scale: 1.15; }
html[data-size="xlarge"] { --type-scale: 1.32; }
html[data-size="xxlarge"] { --type-scale: 1.5; }

html[data-theme="dark"] {
  --bg: #101612;
  --bg-deep: #0b110d;
  --paper: #18211c;
  --paper-raised: #1d2821;
  --ink: #ece8db;
  --ink-soft: #b1b9af;
  --ink-faint: #818b82;
  --line: #2b372f;
  --line-strong: #3b493f;
  --green: #a8d6ba;
  --green-deep: #8cc3a3;
  --green-contrast: #102018;
  --sage: #1c2a22;
  --sage-deep: #26382d;
  --quiz: #16221b;
  --accent: #df9476;
  --accent-deep: #f0b197;
  --accent-soft: #35241d;
  --gold: #d3b06c;
  --marker: #6a5520;
  --correct: #95cfad;
  --correct-bg: #1c3427;
  --wrong: #e5a58a;
  --wrong-bg: #35231c;
  --shadow-card: 0 1px 0 rgba(255, 255, 255, .025), 0 26px 70px -36px rgba(0, 0, 0, .8);
  --shadow-pop: 0 30px 80px -20px rgba(0, 0, 0, .75), 0 4px 16px -8px rgba(0, 0, 0, .5);
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }

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

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-ui);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  transition: background-color .3s ease, color .3s ease;
}

body.is-locked { overflow: hidden; }

button, input, textarea { font: inherit; }
button { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; }
svg { display: block; }
::selection { background: var(--marker); color: var(--ink); }

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

.ambient {
  position: fixed;
  z-index: 0;
  pointer-events: none;
  border-radius: 50%;
  filter: blur(12px);
  opacity: .85;
}
.ambient--top {
  width: 760px;
  height: 560px;
  top: -260px;
  right: -120px;
  background: radial-gradient(circle at 50% 50%, rgba(82, 128, 100, .2), transparent 66%);
}
.ambient--bottom {
  width: 680px;
  height: 520px;
  left: -260px;
  bottom: -260px;
  background: radial-gradient(circle at 50% 50%, rgba(188, 87, 54, .11), transparent 68%);
}
html[data-theme="dark"] .ambient--top {
  background: radial-gradient(circle at 50% 50%, rgba(74, 128, 98, .16), transparent 66%);
}
html[data-theme="dark"] .ambient--bottom {
  background: radial-gradient(circle at 50% 50%, rgba(188, 87, 54, .08), transparent 68%);
}

.grain {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: .32;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.14'/%3E%3C/svg%3E");
  mix-blend-mode: multiply;
}
html[data-theme="dark"] .grain {
  opacity: .16;
  mix-blend-mode: screen;
}

.site-shell {
  position: relative;
  z-index: 2;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ========================= Header ========================= */

.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  display: flex;
  align-items: center;
  gap: 34px;
  width: 100%;
  height: 76px;
  padding-inline: var(--page-gutter);
  border-bottom: 1px solid transparent;
  background: color-mix(in srgb, var(--bg) 84%, transparent);
  backdrop-filter: blur(18px) saturate(1.15);
  -webkit-backdrop-filter: blur(18px) saturate(1.15);
  border-bottom-color: color-mix(in srgb, var(--line) 72%, transparent);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  text-decoration: none;
  flex: 0 0 auto;
}
.brand-mark {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  color: var(--green-contrast);
  background: var(--green);
  box-shadow: 0 8px 18px -10px color-mix(in srgb, var(--green) 70%, transparent);
  transition: transform .25s ease;
}
.brand:hover .brand-mark { transform: rotate(-4deg) translateY(-1px); }
.brand-text { display: flex; flex-direction: column; gap: 1px; }
.brand-text strong {
  font-family: var(--font-zh-serif);
  font-size: 23px;
  font-weight: 700;
  letter-spacing: .16em;
  line-height: 1.15;
  color: var(--ink);
}
.brand-sub {
  font-size: 8px;
  font-weight: 600;
  letter-spacing: .18em;
  color: var(--ink-faint);
  white-space: nowrap;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 3px;
  border: 1px solid color-mix(in srgb, var(--line) 80%, transparent);
  border-radius: 999px;
  background: color-mix(in srgb, var(--paper) 45%, transparent);
}
.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 32px;
  padding: 6px 14px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--ink-soft);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .02em;
  text-decoration: none;
  cursor: pointer;
  transition: color .18s ease, background-color .18s ease;
}
.nav-link:hover { color: var(--ink); background: color-mix(in srgb, var(--paper) 68%, transparent); }
.nav-link.is-active {
  color: var(--ink);
  background: var(--paper);
  box-shadow: 0 1px 1px rgba(20, 35, 27, .04), 0 2px 7px -4px rgba(20, 35, 27, .18);
}
.nav-badge {
  display: inline-grid;
  place-items: center;
  min-width: 20px;
  height: 18px;
  padding: 0 5px;
  border-radius: 999px;
  background: var(--sage);
  color: var(--green);
  font-size: 9px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
}
.read-stat {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-right: 3px;
  color: var(--ink-faint);
  font-size: 10.5px;
  letter-spacing: .03em;
  white-space: nowrap;
}
.read-stat strong { color: var(--ink-soft); font-weight: 650; }
.read-stat-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--green) 12%, transparent);
}
.icon-button {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: color-mix(in srgb, var(--paper) 60%, transparent);
  color: var(--ink-soft);
  cursor: pointer;
  transition: color .18s ease, border-color .18s ease, background-color .18s ease, transform .18s ease;
}
.icon-button:hover {
  color: var(--ink);
  border-color: var(--line-strong);
  background: var(--paper);
  transform: translateY(-1px);
}
.icon-sun { display: none; }
html[data-theme="dark"] .icon-sun { display: block; }
html[data-theme="dark"] .icon-moon { display: none; }

.vocab-trigger {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 38px;
  padding: 0 9px 0 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper);
  color: var(--ink-soft);
  font-size: 11.5px;
  font-weight: 550;
  cursor: pointer;
  transition: border-color .18s ease, color .18s ease, transform .18s ease;
}
.vocab-trigger:hover { color: var(--ink); border-color: var(--line-strong); transform: translateY(-1px); }
.vocab-trigger > svg { color: var(--green); }
.vocab-count {
  display: inline-grid;
  place-items: center;
  min-width: 21px;
  height: 21px;
  padding: 0 5px;
  border-radius: 999px;
  background: var(--green);
  color: var(--green-contrast);
  font-size: 9.5px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  transition: transform .2s ease;
}
.vocab-count.is-bumped { animation: bump .35s ease; }
@keyframes bump {
  0% { transform: scale(1); }
  45% { transform: scale(1.25); }
  100% { transform: scale(1); }
}

/* ========================= Layout ========================= */

main { flex: 1; width: 100%; }

.workspace {
  width: 100%;
  max-width: var(--page-width);
  margin: 0 auto;
  padding: 20px 32px 48px;
}

.reading-meta-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 28px;
  margin-bottom: 14px;
}
.issue-line {
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--ink-faint);
  font-size: 9.5px;
  font-weight: 600;
  letter-spacing: .16em;
  white-space: nowrap;
}
.issue-main { color: var(--green); }
.issue-slash { opacity: .45; }
.meta-bar-actions { display: flex; align-items: center; gap: 16px; }

.passage-dots { display: flex; align-items: center; gap: 5px; }
.passage-dot {
  width: 17px;
  height: 5px;
  padding: 0;
  border: 0;
  border-radius: 999px;
  background: var(--line-strong);
  cursor: pointer;
  transition: width .25s ease, background-color .2s ease, opacity .2s ease;
}
.passage-dot:hover { background: var(--ink-faint); }
.passage-dot.is-done { background: color-mix(in srgb, var(--green) 46%, var(--line)); }
.passage-dot.is-active { width: 28px; background: var(--green); }
.passage-dot:focus-visible { outline-offset: 4px; }

.timer {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 28px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: color-mix(in srgb, var(--paper) 55%, transparent);
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-variant-numeric: tabular-nums;
  letter-spacing: .02em;
  cursor: default;
}
.timer svg { color: var(--ink-faint); }
.timer.is-frozen { color: var(--green); border-color: color-mix(in srgb, var(--green) 24%, var(--line)); }
.timer.is-frozen svg { color: var(--green); }

.workspace-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 404px;
  align-items: start;
  gap: 24px;
}
.workspace-grid.is-quiz-hidden {
  grid-template-columns: minmax(0, 880px);
  justify-content: center;
}

/* ========================= Reading card ========================= */

.reading-card {
  position: relative;
  padding: 46px 52px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: var(--paper);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  animation: rise-in .55s cubic-bezier(.22, .8, .3, 1) both;
}
.reading-card::after {
  content: "";
  position: absolute;
  top: -150px;
  right: -120px;
  width: 330px;
  height: 330px;
  border-radius: 50%;
  background: radial-gradient(circle, color-mix(in srgb, var(--green) 9%, transparent), transparent 68%);
  pointer-events: none;
}
.reading-header { position: relative; z-index: 1; }

@keyframes rise-in {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

.tag-row { display: flex; align-items: center; gap: 8px; }
.category-tag {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 11px;
  border-radius: 999px;
  background: var(--sage);
  color: var(--green);
  font-size: 10px;
  font-weight: 650;
  letter-spacing: .06em;
}
.category-tag::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: currentColor;
}
.level-tag {
  display: inline-flex;
  align-items: center;
  height: 26px;
  padding: 0 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink-faint);
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: .06em;
}

.reading-header h1 {
  max-width: 690px;
  margin: 20px 0 12px;
  color: var(--ink);
  font-family: var(--font-en);
  font-size: clamp(32px, 3.5vw, 45px);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -.026em;
  text-wrap: balance;
}
.passage-subtitle {
  max-width: 620px;
  margin: 0;
  color: var(--ink-soft);
  font-family: var(--font-zh-serif);
  font-size: 14.5px;
  line-height: 1.7;
  letter-spacing: .035em;
}
.reading-info {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 16px;
  margin-top: 22px;
  color: var(--ink-faint);
  font-size: 10.5px;
  letter-spacing: .025em;
}
.reading-info strong { color: var(--ink-soft); font-weight: 650; font-variant-numeric: tabular-nums; }
.info-divider { width: 1px; height: 13px; background: var(--line-strong); }
.click-tip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px 5px 8px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 10.5px;
  font-weight: 550;
  letter-spacing: .01em;
}
.click-tip svg { flex: 0 0 auto; }

.reading-body {
  position: relative;
  z-index: 1;
  margin-top: 30px;
  padding-top: 30px;
  border-top: 1px solid var(--line);
  color: var(--ink);
  font-family: var(--font-en);
  font-size: var(--reading-size);
  font-weight: 400;
  line-height: 1.92;
  letter-spacing: .002em;
  transition: font-size .18s ease;
}
.reading-body .paragraph { margin: 0 0 1.18em; }
.reading-body .paragraph:last-child { margin-bottom: 0; }

/* 段落 / 句子翻译开关：段用圆角方块，句用圆形，符号也不同 */
.paragraph-toggle,
.sentence-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin: 0;
  padding: 0;
  border: 1px solid color-mix(in srgb, var(--green) 38%, transparent);
  background: transparent;
  color: color-mix(in srgb, var(--green) 88%, var(--ink));
  font-family: var(--font-ui);
  font-size: clamp(10px, .56em, 15px);
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  vertical-align: .16em;
  user-select: none;
  transition: opacity .14s ease, color .14s ease, background-color .14s ease, border-color .14s ease;
}
.paragraph-toggle {
  margin-right: .55em;
  padding: .34em .46em;
  border-radius: 5px;
  letter-spacing: .06em;
  opacity: .78;
}
.sentence-toggle {
  width: 1.66em;
  height: 1.66em;
  margin-right: .42em;
  border-radius: 999px;
  opacity: .62;
}
.paragraph-toggle:hover,
.sentence-toggle:hover {
  opacity: 1;
  color: var(--accent);
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 10%, transparent);
}
.paragraph-toggle[aria-expanded="true"],
.sentence-toggle[aria-expanded="true"] {
  opacity: 1;
  color: var(--paper);
  background: var(--accent);
  border-color: var(--accent);
}
.paragraph-toggle:focus-visible,
.sentence-toggle:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* 标题里的可点词：不显示按钮边框与背景，只保留原文排版 */
.reader-title .sentence-word {
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: none;
  color: inherit;
  font: inherit;
  line-height: inherit;
  vertical-align: baseline;
  text-decoration: underline;
  text-decoration-color: color-mix(in srgb, var(--green) 30%, transparent);
  text-decoration-thickness: 1px;
  text-underline-offset: 5px;
}
.reader-title .sentence-word:hover,
.reader-title .sentence-word:focus-visible {
  color: var(--green);
  text-decoration-color: var(--green);
  outline: none;
}

.sentence-zh,
.paragraph-zh {
  display: block;
  margin: .18em 0 .62em;
  padding-left: .82em;
  border-left: 2px solid color-mix(in srgb, var(--green) 32%, transparent);
  color: var(--ink-soft);
  font-family: var(--font-zh-serif);
  font-size: .66em;
  line-height: 1.95;
  letter-spacing: .012em;
  text-align: left;
}
.paragraph-zh {
  margin-top: .58em;
  font-size: .7em;
  color: var(--ink);
}
html[data-theme="dark"] .sentence-zh { color: color-mix(in srgb, var(--ink) 74%, transparent); }
html[data-theme="dark"] .paragraph-zh { color: color-mix(in srgb, var(--ink) 88%, transparent); }

.word {
  display: inline;
  margin: 0;
  padding: 0 .018em;
  border: 0;
  border-radius: 3px;
  background: transparent;
  color: inherit;
  font: inherit;
  line-height: inherit;
  letter-spacing: inherit;
  text-align: inherit;
  text-decoration: underline dotted color-mix(in srgb, var(--green) 32%, transparent);
  text-decoration-thickness: 1px;
  text-underline-offset: .23em;
  cursor: pointer;
  vertical-align: baseline;
  transition: color .14s ease, background-color .14s ease, text-decoration-color .14s ease;
}
.word:hover {
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 8%, transparent);
  text-decoration-color: var(--accent);
}
.word.is-active {
  color: var(--ink);
  background: linear-gradient(transparent 54%, var(--marker) 54%, var(--marker) 94%, transparent 94%);
  text-decoration-color: var(--accent);
  text-decoration-style: solid;
}
.word.is-saved { text-decoration-color: var(--gold); text-decoration-thickness: 1.5px; }
.word:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.reading-footer {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 32px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}
.source-note {
  color: var(--ink-faint);
  font-size: 9.5px;
  letter-spacing: .06em;
}
.font-tools { display: flex; align-items: center; gap: 4px; }
.font-tools-label { margin-right: 4px; color: var(--ink-faint); font-size: 9.5px; letter-spacing: .06em; }
.font-tools button {
  width: 27px;
  height: 25px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: transparent;
  color: var(--ink-soft);
  font-family: var(--font-en);
  font-size: 12px;
  cursor: pointer;
  transition: color .15s ease, border-color .15s ease, background-color .15s ease;
}
.font-tools button:hover { color: var(--green); border-color: var(--line-strong); background: var(--sage); }
.font-tools button:disabled { opacity: .35; cursor: not-allowed; }

/* ========================= Quiz card ========================= */

.quiz-card {
  position: sticky;
  top: 94px;
  display: flex;
  flex-direction: column;
  max-height: calc(100vh - 116px);
  padding: 24px 22px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: var(--quiz);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  scroll-margin-top: 86px;
  animation: rise-in .55s .08s cubic-bezier(.22, .8, .3, 1) both;
}
.quiz-card:focus { outline: none; }
.quiz-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 14px; }
.quiz-header-actions { display: flex; align-items: center; gap: 7px; flex: 0 0 auto; }
.quiz-hide-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  flex: 0 0 auto;
  height: 27px;
  padding: 0 8px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: transparent;
  color: var(--ink-faint);
  font-size: 9px;
  font-weight: 550;
  letter-spacing: .02em;
  cursor: pointer;
  transition: color .15s ease, border-color .15s ease, background-color .15s ease;
}
.quiz-hide-button:hover {
  color: var(--ink);
  border-color: var(--ink-faint);
  background: color-mix(in srgb, var(--paper) 52%, transparent);
}
.quiz-hide-button:focus-visible { outline-offset: 2px; }

.quiz-restore {
  position: fixed;
  right: 24px;
  bottom: calc(24px + env(safe-area-inset-bottom));
  z-index: 90;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 46px;
  padding: 0 15px 0 9px;
  border: 1px solid color-mix(in srgb, var(--green) 72%, transparent);
  border-radius: 999px;
  background: var(--green);
  color: var(--green-contrast);
  box-shadow: 0 14px 30px -14px rgba(10, 28, 19, .55);
  font-size: 11.5px;
  font-weight: 650;
  letter-spacing: .02em;
  cursor: pointer;
  animation: rise-in .26s cubic-bezier(.22, .8, .3, 1) both;
  transition: transform .18s ease, background-color .18s ease, box-shadow .18s ease;
}
.quiz-restore:hover {
  background: var(--green-deep);
  transform: translateY(-1px);
  box-shadow: 0 18px 34px -14px rgba(10, 28, 19, .62);
}
.quiz-restore-icon {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--green-contrast) 15%, transparent);
}
.quiz-restore-count {
  display: inline-grid;
  place-items: center;
  min-width: 30px;
  height: 20px;
  padding: 0 6px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--green-contrast) 16%, transparent);
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: .01em;
}
body.quiz-hidden .workspace { padding-bottom: 96px; }
.quiz-kicker {
  margin: 0 0 4px;
  color: var(--accent);
  font-size: 8.5px;
  font-weight: 700;
  letter-spacing: .19em;
}
.quiz-header h2 {
  letter-spacing: normal;
  margin: 0;
  color: var(--ink);
  font-family: var(--font-zh-serif);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: .06em;
  line-height: 1.25;
}
.progress-orbit {
  --progress: 0%;
  position: relative;
  display: flex;
  align-items: baseline;
  justify-content: center;
  flex: 0 0 auto;
  width: 54px;
  height: 54px;
  padding-top: 19px;
  border-radius: 50%;
  background: conic-gradient(var(--green) var(--progress), var(--sage-deep) 0);
  transition: background .4s ease;
}
.progress-orbit::before {
  content: "";
  position: absolute;
  inset: 5px;
  border-radius: 50%;
  background: var(--quiz);
}
.orbit-number {
  position: relative;
  z-index: 1;
  color: var(--ink);
  font-family: var(--font-en);
  font-size: 15px;
  font-weight: 700;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}
.orbit-total {
  position: relative;
  z-index: 1;
  margin-left: 1px;
  color: var(--ink-faint);
  font-size: 8px;
  font-weight: 600;
}

.quiz-summary {
  display: flex;
  align-items: center;
  gap: 11px;
  margin-top: 16px;
  color: var(--ink-faint);
  font-size: 9.5px;
  letter-spacing: .04em;
  white-space: nowrap;
}
.progress-track {
  flex: 1;
  height: 3px;
  border-radius: 99px;
  background: var(--sage-deep);
  overflow: hidden;
}
.progress-track span {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: var(--green);
  transition: width .35s cubic-bezier(.3, .8, .4, 1), background-color .2s ease;
}

.question-nav { display: flex; gap: 5px; margin-top: 13px; }
.q-nav-btn {
  display: inline-grid;
  place-items: center;
  width: 25px;
  height: 25px;
  padding: 0;
  border: 1px solid var(--line-strong);
  border-radius: 7px;
  background: transparent;
  color: var(--ink-faint);
  font-family: var(--font-mono);
  font-size: 9.5px;
  font-weight: 600;
  cursor: pointer;
  transition: all .16s ease;
}
.q-nav-btn:hover { border-color: var(--ink-faint); color: var(--ink); }
.q-nav-btn.is-answered {
  border-color: color-mix(in srgb, var(--green) 45%, var(--line));
  background: var(--green);
  color: var(--green-contrast);
}
.q-nav-btn.is-wrong { border-color: color-mix(in srgb, var(--wrong) 48%, var(--line)); background: var(--wrong-bg); color: var(--wrong); }

.question-list {
  flex: 1;
  min-height: 0;
  margin: 14px -6px 0 0;
  padding-right: 6px;
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-width: thin;
  scrollbar-color: var(--line-strong) transparent;
  transition: -webkit-mask-image .2s ease, mask-image .2s ease;
}
.question-list.is-scrollable:not(.is-at-end) {
  -webkit-mask-image: linear-gradient(to bottom, #000 0, #000 calc(100% - 30px), transparent 100%);
  mask-image: linear-gradient(to bottom, #000 0, #000 calc(100% - 30px), transparent 100%);
}
.question-list::-webkit-scrollbar { width: 5px; }
.question-list::-webkit-scrollbar-thumb { background: var(--line-strong); border-radius: 10px; }
.question-list::-webkit-scrollbar-track { background: transparent; }

.question {
  padding: 16px 0 17px;
  border-top: 1px solid color-mix(in srgb, var(--line-strong) 72%, transparent);
  scroll-margin-top: 8px;
}
.question:first-child { border-top: 0; padding-top: 2px; }
.question-head { display: flex; align-items: center; gap: 7px; }
.q-number {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: calc(9.5px * var(--type-scale));
  font-weight: 700;
  letter-spacing: .04em;
}
.q-type {
  padding: 2px 6px;
  border-radius: 4px;
  background: color-mix(in srgb, var(--ink-faint) 9%, transparent);
  color: var(--ink-faint);
  font-size: calc(9px * var(--type-scale));
  letter-spacing: .06em;
}
.question h3 {
  margin: 7px 0 9px;
  color: var(--ink);
  font-family: var(--font-en);
  font-size: calc(15.5px * var(--type-scale));
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: -.005em;
}
.options { display: flex; flex-direction: column; gap: 4px; }
.question .word { text-underline-offset: .2em; }
.option {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 8px;
  min-height: 31px;
  padding: 6px 8px;
  border: 1px solid transparent;
  border-radius: 9px;
  color: var(--ink-soft);
  font-size: calc(13px * var(--type-scale));
  line-height: 1.52;
  cursor: pointer;
  transition: color .15s ease, background-color .15s ease, border-color .15s ease;
}
.option:hover { color: var(--ink); background: color-mix(in srgb, var(--paper) 52%, transparent); }
.option input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}
.option-letter {
  display: inline-grid;
  place-items: center;
  flex: 0 0 auto;
  width: 19px;
  height: 19px;
  margin-top: .5px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  color: var(--ink-faint);
  font-family: var(--font-mono);
  font-size: 8.5px;
  font-weight: 600;
  transition: all .15s ease;
}
.option-text { padding-top: .5px; }
.option.is-selected {
  border-color: color-mix(in srgb, var(--green) 48%, var(--line));
  background: var(--paper);
  color: var(--ink);
  box-shadow: 0 2px 8px -5px rgba(20, 40, 30, .3);
}
.option.is-selected .option-letter { border-color: var(--green); background: var(--green); color: var(--green-contrast); }
.option:focus-within { outline: 2px solid var(--accent); outline-offset: 1px; }

.question.is-revealed .option { cursor: default; }
.question.is-revealed .option.is-correct {
  border-color: color-mix(in srgb, var(--correct) 40%, var(--line));
  background: var(--correct-bg);
  color: var(--ink);
}
.question.is-revealed .option.is-correct .option-letter {
  border-color: var(--correct);
  background: var(--correct);
  color: var(--green-contrast);
}
.question.is-revealed .option.is-wrong {
  border-color: color-mix(in srgb, var(--wrong) 38%, var(--line));
  background: var(--wrong-bg);
  color: var(--ink);
}
.question.is-revealed .option.is-wrong .option-letter {
  border-color: var(--wrong);
  background: var(--wrong);
  color: var(--green-contrast);
}
.explain {
  display: none;
  margin-top: 9px;
  padding: 9px 11px;
  border-left: 2px solid var(--accent);
  border-radius: 0 8px 8px 0;
  background: color-mix(in srgb, var(--paper) 75%, transparent);
}
.question.is-revealed .explain { display: block; animation: fade-in .3s ease both; }
.explain-label {
  color: var(--accent);
  font-size: calc(9px * var(--type-scale));
  font-weight: 700;
  letter-spacing: .12em;
}
.explain p {
  margin: 3px 0 0;
  color: var(--ink-soft);
  font-size: calc(12px * var(--type-scale));
  line-height: 1.75;
  text-align: justify;
}
@keyframes fade-in { from { opacity: 0; transform: translateY(-3px); } to { opacity: 1; transform: translateY(0); } }

.quiz-footer {
  flex: 0 0 auto;
  margin-top: 12px;
  padding-top: 13px;
  border-top: 1px solid var(--line-strong);
}
.quiz-hint {
  min-height: 14px;
  margin: 0 0 9px;
  color: var(--ink-faint);
  font-size: calc(10px * var(--type-scale));
  line-height: 1.45;
  letter-spacing: .015em;
}
.quiz-hint.is-warn { color: var(--accent); }
.quiz-hint.is-success { color: var(--correct); }
.quiz-actions { display: flex; align-items: center; gap: 8px; }
.text-button {
  padding: 7px 2px;
  border: 0;
  background: transparent;
  color: var(--ink-faint);
  font-size: 10.5px;
  text-decoration: underline;
  text-underline-offset: 3px;
  cursor: pointer;
}
.text-button:hover { color: var(--ink); }
.primary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 40px;
  margin-left: auto;
  padding: 0 17px;
  border: 1px solid var(--green);
  border-radius: 999px;
  background: var(--green);
  color: var(--green-contrast);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: .02em;
  cursor: pointer;
  transition: background-color .18s ease, transform .18s ease, opacity .18s ease;
}
.primary-button svg { transition: transform .18s ease; }
.primary-button:hover:not(:disabled) { background: var(--green-deep); transform: translateY(-1px); }
.primary-button:hover:not(:disabled) svg { transform: translateX(2px); }
.primary-button:disabled { opacity: .42; cursor: not-allowed; }
.primary-button.is-done { border-color: var(--line-strong); background: var(--sage-deep); color: var(--ink-soft); }

/* ========================= Quote strip ========================= */

.quote-strip {
  position: relative;
  display: grid;
  grid-template-columns: 184px minmax(0, 1fr);
  align-items: stretch;
  gap: 30px;
  margin-top: 26px;
  padding: 30px 36px 31px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(115deg, color-mix(in srgb, var(--sage) 58%, transparent), transparent 62%),
    color-mix(in srgb, var(--paper) 58%, transparent);
  overflow: hidden;
}
.quote-label {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 22px;
  padding-right: 28px;
  border-right: 1px solid var(--line);
}
.quote-kicker {
  color: var(--ink-faint);
  font-size: 8.5px;
  font-weight: 700;
  letter-spacing: .18em;
  line-height: 1.6;
}
.quote-rule { width: 34px; height: 1px; background: var(--accent); }
.quote-strip blockquote {
  position: relative;
  z-index: 1;
  align-self: center;
  max-width: 830px;
  margin: 0;
}
.quote-strip blockquote p {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-en);
  font-size: clamp(22px, 2.15vw, 29px);
  font-weight: 400;
  line-height: 1.44;
  letter-spacing: -.012em;
  text-wrap: pretty;
}
.quote-strip cite {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
  color: var(--accent);
  font-family: var(--font-ui);
  font-size: 9px;
  font-style: normal;
  font-weight: 650;
  letter-spacing: .15em;
  text-transform: uppercase;
}
.quote-strip cite::before { content: ""; width: 17px; height: 1px; background: var(--accent); }
.quote-mark {
  position: absolute;
  right: 25px;
  bottom: -46px;
  z-index: 0;
  color: color-mix(in srgb, var(--green) 17%, transparent);
  font-family: var(--font-en);
  font-size: 168px;
  line-height: 1;
  pointer-events: none;
  user-select: none;
}

/* ========================= Footer ========================= */

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: 100%;
  max-width: var(--page-width);
  margin: 0 auto;
  padding: 0 32px 34px;
  color: var(--ink-faint);
  font-size: 9.5px;
  letter-spacing: .04em;
}

/* ========================= Word popover ========================= */

.popover-scrim {
  position: fixed;
  inset: 0;
  z-index: 110;
  background: rgba(12, 24, 18, .4);
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
  display: none;
  animation: fade-in .2s ease;
}
.word-popover {
  position: fixed;
  z-index: 150;
  width: 344px;
  max-height: calc(100vh - 28px);
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 18px 19px 17px;
  border: 1px solid var(--line);
  border-radius: 17px;
  background: var(--paper-raised);
  box-shadow: var(--shadow-pop);
  scrollbar-width: thin;
  scrollbar-color: var(--line-strong) transparent;
  animation: pop-in .18s cubic-bezier(.2, .8, .3, 1.1) both;
}
.word-popover::-webkit-scrollbar { width: 5px; }
.word-popover::-webkit-scrollbar-thumb { background: var(--line-strong); border-radius: 10px; }
@keyframes pop-in {
  from { opacity: 0; transform: translateY(4px) scale(.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
.popover-arrow {
  position: absolute;
  bottom: -6px;
  left: var(--arrow-x, 50%);
  width: 11px;
  height: 11px;
  margin-left: -6px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--paper-raised);
  transform: rotate(45deg);
}
.word-popover.is-below .popover-arrow {
  top: -6px;
  bottom: auto;
  transform: rotate(225deg);
}
.popover-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.popover-title { min-width: 0; }
.popover-word {
  display: inline;
  color: var(--ink);
  font-family: var(--font-en);
  font-size: 27px;
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -.015em;
  overflow-wrap: anywhere;
}
.popover-phonetic {
  display: inline-block;
  margin-left: 8px;
  color: var(--accent);
  font-family: var(--font-ui);
  font-size: 11px;
  letter-spacing: .01em;
  vertical-align: 2px;
}
.popover-phonetic:empty { display: none; }
.popover-close {
  display: inline-grid;
  place-items: center;
  flex: 0 0 auto;
  width: 25px;
  height: 25px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: transparent;
  color: var(--ink-faint);
  cursor: pointer;
  transition: color .15s ease, border-color .15s ease;
}
.popover-close:hover { color: var(--ink); border-color: var(--line-strong); }
.popover-form {
  margin-top: 4px;
  color: var(--ink-faint);
  font-size: 9.5px;
  letter-spacing: .02em;
}

.popover-history {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin: -3px 0 12px;
  padding-bottom: 9px;
  border-bottom: 1px solid var(--line);
  animation: fade-in .18s ease both;
}
.popover-back {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  min-width: 0;
  padding: 3px 6px 3px 4px;
  border: 1px solid transparent;
  border-radius: 7px;
  background: transparent;
  color: var(--ink-soft);
  font-size: 9.5px;
  cursor: pointer;
  transition: color .15s ease, border-color .15s ease, background-color .15s ease;
}
.popover-back:hover { color: var(--ink); border-color: var(--line); background: var(--sage); }
.popover-back > svg { flex: 0 0 auto; color: var(--accent); }
.popover-back-word {
  max-width: 140px;
  overflow: hidden;
  color: var(--accent);
  font-family: var(--font-en);
  font-size: 12px;
  font-style: italic;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.popover-level {
  flex: 0 0 auto;
  color: var(--ink-faint);
  font-family: var(--font-mono);
  font-size: 7.5px;
  letter-spacing: .12em;
}
.word-popover.is-nested { border-color: color-mix(in srgb, var(--green) 24%, var(--line)); }

.definition-block {
  margin-top: 13px;
  padding: 12px 13px 12px 14px;
  border-radius: 10px;
  background: var(--sage);
  border-left: 2px solid var(--green);
}
.definition-meta { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.definition-label {
  color: var(--green);
  font-size: 8px;
  font-weight: 700;
  letter-spacing: .14em;
}
.definition-pos {
  flex: 0 0 auto;
  padding: 2px 5px;
  border-radius: 4px;
  background: var(--paper);
  color: var(--ink-faint);
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: .02em;
}
.definition-pos:empty { display: none; }
.definition-en {
  margin: 7px 0 0;
  color: var(--ink);
  font-family: var(--font-en);
  font-size: 14.5px;
  line-height: 1.58;
  letter-spacing: .001em;
}
.definition-hint {
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 8px 0 0;
  color: var(--ink-faint);
  font-size: 8px;
  letter-spacing: .025em;
}
.definition-hint::before { content: "↳"; color: var(--green); font-size: 10px; line-height: 1; }
.definition-en .lookup-unit,
.example-en .lookup-unit { white-space: nowrap; }
.definition-en .lookup-word,
.example-en .lookup-word {
  display: inline;
  margin: 0;
  padding: 0 .02em;
  border: 0;
  border-radius: 2px;
  background: transparent;
  color: inherit;
  font: inherit;
  line-height: inherit;
  letter-spacing: inherit;
  text-align: inherit;
  text-decoration: underline dotted color-mix(in srgb, var(--green) 38%, transparent);
  text-decoration-thickness: 1px;
  text-underline-offset: .22em;
  cursor: pointer;
  transition: color .14s ease, background-color .14s ease, text-decoration-color .14s ease;
}
.definition-en .lookup-word:hover,
.example-en .lookup-word:hover {
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 8%, transparent);
  text-decoration-color: var(--accent);
  text-decoration-style: solid;
}
.definition-en .lookup-word:focus-visible,
.example-en .lookup-word:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.popover-example {
  margin-top: 10px;
  padding: 9px 2px 0;
  border-top: 1px solid var(--line);
}
.example-label {
  display: block;
  margin-bottom: 3px;
  color: var(--accent);
  font-size: 8px;
  font-weight: 700;
  letter-spacing: .13em;
}
.example-en {
  margin: 0;
  color: var(--ink-soft);
  font-family: var(--font-en);
  font-size: 12px;
  line-height: 1.55;
}

.translation-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  margin-top: 12px;
  padding: 8px 10px;
  border: 1px dashed var(--line-strong);
  border-radius: 9px;
  background: transparent;
  color: var(--ink-soft);
  font-size: 10.5px;
  letter-spacing: .01em;
  cursor: pointer;
  transition: color .15s ease, border-color .15s ease, background-color .15s ease;
}
.translation-toggle:hover {
  color: var(--ink);
  border-color: var(--accent);
  background: var(--accent-soft);
}
.translation-toggle > svg { margin-left: auto; color: var(--ink-faint); transition: transform .2s ease; }
.translation-toggle[aria-expanded="true"] {
  border-style: solid;
  border-color: color-mix(in srgb, var(--green) 35%, var(--line));
  color: var(--ink);
  background: color-mix(in srgb, var(--sage) 55%, transparent);
}
.translation-toggle[aria-expanded="true"] > svg { transform: rotate(180deg); color: var(--green); }
.translation-toggle-mark {
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 19px;
  height: 19px;
  border-radius: 5px;
  background: var(--accent-soft);
  color: var(--accent);
  font-family: var(--font-zh-serif);
  font-size: 9.5px;
  font-weight: 700;
}
.translation-panel {
  margin-top: 7px;
  padding: 10px 11px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--paper);
  animation: fade-in .2s ease both;
}
.translation-panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 8px;
  color: var(--ink-soft);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: .06em;
}
.translation-panel-kicker {
  color: var(--ink-faint);
  font-family: var(--font-mono);
  font-size: 7.5px;
  letter-spacing: .13em;
}
.popover-senses { display: flex; flex-direction: column; gap: 7px; }
.sense { display: flex; align-items: baseline; gap: 8px; }
.sense-pos {
  flex: 0 0 auto;
  min-width: 29px;
  padding: 2px 4px;
  border-radius: 4px;
  background: var(--sage);
  color: var(--green);
  font-family: var(--font-mono);
  font-size: 8.5px;
  font-weight: 600;
  text-align: center;
}
.sense-zh {
  color: var(--ink);
  font-size: 12.5px;
  line-height: 1.55;
  letter-spacing: .01em;
}
.example-zh {
  margin: 8px 0 0;
  padding-top: 8px;
  border-top: 1px dashed var(--line);
  color: var(--ink-faint);
  font-size: 9.5px;
  line-height: 1.6;
}
.popover-actions {
  display: flex;
  gap: 7px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}
.mini-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  flex: 1;
  height: 34px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: transparent;
  color: var(--ink-soft);
  font-size: 10.5px;
  cursor: pointer;
  transition: color .15s ease, border-color .15s ease, background-color .15s ease;
}
.mini-button:hover { color: var(--ink); border-color: var(--line-strong); background: var(--sage); }
.mini-button.is-speaking svg { animation: speaker-pulse .55s ease infinite alternate; }
@keyframes speaker-pulse { from { opacity: .5; } to { opacity: 1; } }
.mini-button--save { flex: 1.25; }
.mini-button--save.is-saved {
  border-color: color-mix(in srgb, var(--accent) 40%, var(--line));
  background: var(--accent-soft);
  color: var(--accent);
}
.mini-button--save.is-saved svg path { fill: currentColor; fill-opacity: .22; }

/* ========================= Vocabulary drawer ========================= */

.drawer-scrim {
  position: fixed;
  inset: 0;
  z-index: 130;
  background: rgba(10, 21, 15, .43);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  animation: fade-in .25s ease;
}
.vocab-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: 140;
  display: flex;
  flex-direction: column;
  width: min(414px, 100vw);
  padding: 30px 28px 22px;
  border-left: 1px solid var(--line);
  background: var(--paper);
  box-shadow: -30px 0 80px -40px rgba(10, 21, 15, .45);
  transform: translateX(104%);
  transition: transform .38s cubic-bezier(.22, .8, .3, 1);
}
.vocab-drawer.is-open { transform: translateX(0); }
.vocab-drawer:focus, .modal-card:focus { outline: none; }
.drawer-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.drawer-kicker {
  margin: 0 0 5px;
  color: var(--accent);
  font-size: 8.5px;
  font-weight: 700;
  letter-spacing: .19em;
}
.drawer-header h2 {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 0;
  color: var(--ink);
  font-family: var(--font-zh-serif);
  font-size: 25px;
  font-weight: 700;
  letter-spacing: .05em;
}
.drawer-header h2 span {
  display: inline-grid;
  place-items: center;
  min-width: 24px;
  height: 22px;
  padding: 0 6px;
  border-radius: 999px;
  background: var(--sage);
  color: var(--green);
  font-family: var(--font-ui);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0;
}
.drawer-body { flex: 1; min-height: 0; margin-top: 18px; overflow-y: auto; padding-right: 3px; scrollbar-width: thin; }
.vocab-empty { display: flex; flex-direction: column; align-items: center; padding: 66px 20px 20px; text-align: center; }
.empty-mark {
  display: grid;
  place-items: center;
  width: 76px;
  height: 76px;
  border: 1px dashed var(--line-strong);
  border-radius: 50%;
  color: var(--gold);
  background: var(--sage);
}
.vocab-empty h3 { margin: 20px 0 7px; color: var(--ink); font-family: var(--font-zh-serif); font-size: 19px; font-weight: 600; letter-spacing: .04em; }
.vocab-empty p { max-width: 250px; margin: 0; color: var(--ink-faint); font-size: 11px; line-height: 1.75; }
.vocab-list { display: flex; flex-direction: column; }
.vocab-item {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding: 15px 0 16px;
  border-bottom: 1px solid var(--line);
}
.vocab-item:first-child { border-top: 1px solid var(--line); }
.vocab-main { min-width: 0; }
.vocab-word-line { display: flex; align-items: baseline; gap: 8px; }
.vocab-word {
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--ink);
  font-family: var(--font-en);
  font-size: 20px;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -.01em;
  text-align: left;
  cursor: pointer;
}
.vocab-word:hover { color: var(--accent); }
.vocab-phonetic { color: var(--accent); font-size: 9.5px; }
.vocab-def {
  margin: 6px 0 0;
  color: var(--ink-soft);
  font-family: var(--font-en);
  font-size: 12px;
  line-height: 1.55;
}

/* 生词本里的英文释义也可以点词，按正文的虚线下划线呈现，别做成按钮块 */
.vocab-def .lookup-word {
  padding: 0;
  border: 0;
  background: none;
  color: inherit;
  font: inherit;
  text-decoration: underline dotted;
  text-decoration-color: var(--line-strong);
  text-underline-offset: 3px;
  cursor: pointer;
}

.vocab-def .lookup-word:hover {
  color: var(--green);
  text-decoration-color: currentColor;
}
.vocab-translation { margin-top: 7px; }
.vocab-translation summary {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  width: fit-content;
  padding: 3px 7px;
  border: 1px dashed var(--line-strong);
  border-radius: 5px;
  color: var(--ink-faint);
  font-size: 8.5px;
  line-height: 1.2;
  letter-spacing: .04em;
  cursor: pointer;
  list-style: none;
  user-select: none;
}
.vocab-translation summary::-webkit-details-marker { display: none; }
.vocab-translation summary::before {
  content: "中";
  display: grid;
  place-items: center;
  width: 14px;
  height: 14px;
  border-radius: 3px;
  background: var(--accent-soft);
  color: var(--accent);
  font-family: var(--font-zh-serif);
  font-size: 8px;
  font-weight: 700;
}
.vocab-translation summary:hover { color: var(--ink); border-color: var(--accent); }
.vocab-translation summary::after {
  content: "+";
  margin-left: 1px;
  color: var(--accent);
  font-size: 10px;
  font-weight: 700;
}
.vocab-translation[open] summary { border-style: solid; color: var(--ink-soft); }
.vocab-translation[open] summary::after { content: "−"; }
.vocab-zh { margin: 6px 0 0; color: var(--ink-soft); font-size: 11px; line-height: 1.55; }
.vocab-source { margin: 5px 0 0; color: var(--ink-faint); font-size: 8.5px; letter-spacing: .02em; }
.vocab-actions { display: flex; align-items: center; gap: 4px; flex: 0 0 auto; padding-top: 2px; }
.vocab-action {
  display: inline-grid;
  place-items: center;
  width: 28px;
  height: 28px;
  padding: 0;
  border: 1px solid transparent;
  border-radius: 8px;
  background: transparent;
  color: var(--ink-faint);
  cursor: pointer;
  transition: color .15s ease, background-color .15s ease, border-color .15s ease;
}
.vocab-action:hover { color: var(--ink); border-color: var(--line); background: var(--sage); }
.vocab-action--remove:hover { color: var(--wrong); }
.drawer-footer {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  flex: 0 0 auto;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  color: var(--ink-faint);
  font-size: 8.5px;
  letter-spacing: .03em;
}
.drawer-tip { color: var(--gold); }

/* ========================= Modals ========================= */

.modal-layer {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: grid;
  place-items: center;
  padding: 24px;
}
.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(9, 20, 14, .5);
  backdrop-filter: blur(7px);
  -webkit-backdrop-filter: blur(7px);
  animation: fade-in .25s ease;
}
.modal-card {
  position: relative;
  z-index: 1;
  width: min(900px, 100%);
  max-height: min(90vh, 860px);
  overflow-y: auto;
  padding: 34px 36px 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: var(--paper);
  box-shadow: 0 40px 100px -30px rgba(8, 20, 13, .55);
  animation: modal-in .3s cubic-bezier(.22, .8, .3, 1) both;
  scrollbar-width: thin;
}
@keyframes modal-in {
  from { opacity: 0; transform: translateY(14px) scale(.985); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
.modal-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; }
.modal-kicker {
  margin: 0 0 5px;
  color: var(--accent);
  font-size: 8.5px;
  font-weight: 700;
  letter-spacing: .19em;
}
.modal-header h2 {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-zh-serif);
  font-size: 33px;
  font-weight: 700;
  letter-spacing: .06em;
  line-height: 1.25;
}
.modal-sub { margin: 7px 0 0; color: var(--ink-faint); font-size: 11px; letter-spacing: .02em; }
.library-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 13px;
  margin-top: 25px;
}
.library-item {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 196px;
  padding: 19px 20px 17px;
  border: 1px solid var(--line);
  border-radius: 17px;
  background: color-mix(in srgb, var(--bg) 48%, var(--paper));
  color: inherit;
  text-align: left;
  cursor: pointer;
  overflow: hidden;
  transition: transform .2s ease, border-color .2s ease, background-color .2s ease, box-shadow .2s ease;
}
.library-item:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--green) 38%, var(--line));
  background: var(--paper);
  box-shadow: 0 16px 28px -24px rgba(20, 40, 30, .35);
}
.library-item.is-current {
  border-color: color-mix(in srgb, var(--green) 58%, var(--line));
  background: var(--sage);
}
.lib-top { display: flex; align-items: center; gap: 8px; }
.lib-no { color: var(--ink-faint); font-family: var(--font-mono); font-size: 9px; font-weight: 600; letter-spacing: .04em; }
.lib-category { color: var(--green); font-size: 9.5px; font-weight: 600; letter-spacing: .04em; }
.lib-status {
  margin-left: auto;
  padding: 3px 7px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 8px;
  font-weight: 600;
  letter-spacing: .03em;
}
.lib-status--done { background: color-mix(in srgb, var(--green) 13%, transparent); color: var(--green); }
.library-item h3 {
  margin: 14px 0 6px;
  color: var(--ink);
  font-family: var(--font-en);
  font-size: 22px;
  font-weight: 600;
  line-height: 1.24;
  letter-spacing: -.015em;
}
.library-item .lib-sub { margin: 0; color: var(--ink-faint); font-size: 10.5px; line-height: 1.6; }
.lib-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: auto;
  padding-top: 15px;
  color: var(--ink-faint);
  font-size: 8.5px;
  letter-spacing: .02em;
}
.lib-cta { margin-left: auto; color: var(--green); font-size: 9.5px; font-weight: 600; }
.library-item.is-current .lib-cta { color: var(--accent); }
.modal-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  color: var(--ink-faint);
  font-size: 9px;
  letter-spacing: .03em;
}
.modal-footer-mark { font-family: var(--font-en); font-size: 9.5px; letter-spacing: .08em; }

/* Result */
.result-dialog {
  width: min(460px, 100%);
  padding: 36px 36px 30px;
  overflow: visible;
  text-align: center;
}
.result-dialog .modal-kicker { margin-bottom: 0; }
.result-orbit {
  --score: 0%;
  position: relative;
  display: grid;
  place-items: center;
  width: 132px;
  height: 132px;
  margin: 19px auto 20px;
  border-radius: 50%;
  background: conic-gradient(var(--accent) var(--score), var(--sage-deep) 0);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--line) 60%, transparent) inset;
}
.result-orbit::before {
  content: "";
  position: absolute;
  inset: 8px;
  border-radius: 50%;
  background: var(--paper);
}
.result-score { position: relative; z-index: 1; display: flex; align-items: baseline; gap: 3px; }
.result-score strong {
  color: var(--ink);
  font-family: var(--font-en);
  font-size: 47px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: -.04em;
}
.result-score span { color: var(--ink-faint); font-size: 12px; }
.result-dialog h2 {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-zh-serif);
  font-size: 25px;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: .04em;
}
.result-copy { margin: 8px 0 0; color: var(--ink-faint); font-size: 10.5px; line-height: 1.7; }
.result-details {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 22px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: var(--sage);
  overflow: hidden;
}
.result-details > div { padding: 11px 6px; border-left: 1px solid var(--line); }
.result-details > div:first-child { border-left: 0; }
.result-details span { display: block; color: var(--ink-faint); font-size: 8.5px; letter-spacing: .04em; }
.result-details strong { display: block; margin-top: 3px; color: var(--ink); font-size: 13px; font-weight: 650; font-variant-numeric: tabular-nums; }
.result-actions { display: grid; grid-template-columns: 1fr 1.2fr; gap: 9px; margin-top: 23px; }
.result-actions .primary-button { width: 100%; margin-left: 0; }
.result-study-btn {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  gap: 2px;
  align-items: flex-start;
  padding: 11px 16px;
  border-radius: 12px;
  border: 1px dashed color-mix(in srgb, var(--green) 42%, transparent);
  background: color-mix(in srgb, var(--green) 8%, transparent);
  color: var(--ink);
  text-align: left;
  cursor: pointer;
  transition: background-color .16s ease, border-color .16s ease;
}
.result-study-btn:hover { background: color-mix(in srgb, var(--green) 14%, transparent); border-color: var(--green); }
.result-study-title { font-family: var(--font-ui); font-size: 13px; font-weight: 600; }
.result-study-sub { font-family: var(--font-ui); font-size: 11px; color: var(--ink-faint); }
.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  padding: 0 14px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: transparent;
  color: var(--ink-soft);
  font-size: 11.5px;
  font-weight: 550;
  cursor: pointer;
  transition: color .15s ease, border-color .15s ease, background-color .15s ease;
}
.secondary-button:hover { color: var(--ink); border-color: var(--ink-faint); background: var(--sage); }
.result-burst { position: absolute; inset: 0; pointer-events: none; overflow: visible; }
.result-burst span {
  position: absolute;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  opacity: .65;
  animation: float-dot 4s ease-in-out infinite alternate;
}
.result-burst span:nth-child(1) { top: 24px; left: 58px; width: 9px; height: 9px; background: var(--accent); transform: rotate(18deg); }
.result-burst span:nth-child(2) { top: 88px; right: 45px; background: var(--gold); transform: rotate(-22deg); animation-delay: -.9s; }
.result-burst span:nth-child(3) { top: 38px; right: 104px; width: 5px; height: 5px; border-radius: 50%; background: var(--green); animation-delay: -2s; }
.result-burst span:nth-child(4) { bottom: 100px; left: 35px; width: 5px; height: 5px; border-radius: 50%; background: var(--green); animation-delay: -1.4s; }
.result-burst span:nth-child(5) { top: 138px; left: 48px; width: 10px; height: 4px; background: var(--gold); transform: rotate(-30deg); animation-delay: -2.7s; }
.result-burst span:nth-child(6) { bottom: 80px; right: 36px; width: 4px; height: 9px; background: var(--accent); transform: rotate(28deg); animation-delay: -3.1s; }
@keyframes float-dot {
  from { transform: translateY(-3px) rotate(0deg); }
  to { transform: translateY(5px) rotate(25deg); }
}

/* Toast */
.toast {
  position: fixed;
  bottom: 26px;
  left: 50%;
  z-index: 300;
  padding: 10px 17px;
  border: 1px solid color-mix(in srgb, var(--ink) 20%, transparent);
  border-radius: 999px;
  background: var(--ink);
  color: var(--bg);
  box-shadow: 0 12px 30px -12px rgba(10, 21, 15, .5);
  font-size: 11px;
  letter-spacing: .02em;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 10px);
  transition: opacity .2s ease, transform .25s ease;
}
.toast.is-visible { opacity: 1; transform: translate(-50%, 0); }

/* ========================= Responsive ========================= */

@media (max-width: 1180px) {
  .site-header { gap: 24px; }
  .workspace-grid { grid-template-columns: minmax(0, 1fr) 372px; gap: 20px; }
  .reading-card { padding: 40px 40px 23px; }
  .quiz-card { padding: 22px 19px 17px; }
  .question h3 { font-size: calc(14px * var(--type-scale)); }
  .option { font-size: calc(12px * var(--type-scale)); }
  .quote-strip { grid-template-columns: 156px minmax(0, 1fr); gap: 24px; padding: 27px 28px 28px; }
  .quote-label { padding-right: 22px; }
  .quote-strip blockquote p { font-size: clamp(21px, 2.2vw, 27px); }
  .quote-mark { font-size: 148px; right: 18px; bottom: -40px; }
}

@media (max-width: 1020px) {
  .read-stat { display: none; }
  .workspace-grid { grid-template-columns: minmax(0, 1fr); gap: 20px; }
  .quiz-card {
    position: relative;
    top: auto;
    max-height: none;
  }
  .question-list {
    flex: none;
    max-height: none;
    margin-right: 0;
    padding-right: 0;
    overflow: visible;
  }
  .quiz-card { animation-delay: .04s; }
  .quote-strip { grid-template-columns: 1fr; gap: 16px; }
  .quote-label { flex-direction: row; align-items: center; justify-content: flex-start; gap: 14px; padding-right: 0; border-right: 0; }
  .quote-rule { width: 24px; }
  .quote-strip blockquote p { font-size: clamp(21px, 3.2vw, 26px); }
  .quote-mark { font-size: 126px; right: 18px; bottom: -34px; }
  .site-footer { padding-bottom: 26px; }
}

@media (max-width: 760px) {
  :root { --page-gutter: 18px; --reading-base: 17px; }
  .site-header { height: 64px; gap: 12px; }
  .brand-mark { width: 34px; height: 34px; border-radius: 10px; }
  .brand-mark svg { width: 28px; height: 28px; }
  .brand-text strong { font-size: 20px; letter-spacing: .12em; }
  .brand-sub { display: none; }
  .main-nav { padding: 2px; }
  .nav-link { min-height: 30px; padding: 5px 10px; font-size: 10.5px; }
  .nav-link[href="#practice"] { display: none; }
  .nav-badge { display: none; }
  .header-actions { gap: 6px; }
  .icon-button { width: 34px; height: 34px; }
  .vocab-trigger { height: 34px; padding: 0 6px 0 9px; gap: 5px; }
  .vocab-trigger > span:not(.vocab-count) { display: none; }
  .vocab-count { min-width: 19px; height: 19px; font-size: 9px; }

  .workspace { padding: 16px 16px 34px; }
  .reading-meta-bar { flex-wrap: wrap; gap: 9px; margin-bottom: 12px; }
  .issue-line { font-size: 8.5px; letter-spacing: .11em; }
  .meta-bar-actions { gap: 10px; margin-left: auto; }
  .passage-dots { gap: 4px; }
  .passage-dot { width: 13px; }
  .passage-dot.is-active { width: 21px; }
  .timer { height: 26px; padding: 0 8px; font-size: 9.5px; }

  .reading-card { padding: 27px 21px 19px; border-radius: 21px; }
  .reading-card::after { width: 220px; height: 220px; top: -110px; right: -90px; }
  .reading-header h1 { margin-top: 17px; font-size: clamp(28px, 8vw, 36px); line-height: 1.17; }
  .passage-subtitle { font-size: 12.5px; line-height: 1.65; }
  .category-tag { padding: 5px 9px; font-size: 9px; }
  .level-tag { height: 23px; font-size: 8px; }
  .reading-info { margin-top: 17px; gap: 7px 12px; font-size: 9.5px; }
  .info-divider { display: none; }
  .click-tip { padding: 4px 8px; font-size: 9.5px; }
  .reading-body { margin-top: 23px; padding-top: 23px; line-height: 1.9; }
  .reading-body .paragraph { margin-bottom: 1.15em; }
  .word { text-decoration-color: color-mix(in srgb, var(--green) 20%, transparent); }
  .reading-footer { margin-top: 26px; padding-top: 13px; }
  .source-note { font-size: 8.5px; }

  .quiz-card { padding: 21px 16px 16px; border-radius: 21px; scroll-margin-top: 76px; }
  .quiz-header { gap: 9px; }
  .quiz-header-actions { gap: 5px; }
  .quiz-hide-button { height: 25px; padding: 0 7px; font-size: 8.5px; }
  .quiz-hide-button svg { width: 12px; height: 12px; }
  .quiz-header h2 { font-size: 22px; }
  .quiz-restore { right: 16px; bottom: calc(18px + env(safe-area-inset-bottom)); height: 44px; }
  body.quiz-hidden .workspace { padding-bottom: 104px; }
  .question h3 { font-size: calc(15px * var(--type-scale)); }
  .option { font-size: calc(13px * var(--type-scale)); padding: 7px 9px; }
  .explain p { font-size: calc(12px * var(--type-scale)); }
  .quiz-hint { font-size: calc(10.5px * var(--type-scale)); }
  .primary-button { height: 39px; }

  .quote-strip { padding: 22px 20px; border-radius: 18px; margin-top: 20px; gap: 14px; }
  .quote-label { gap: 12px; }
  .quote-kicker { font-size: 8px; }
  .quote-strip blockquote p { font-size: 20px; line-height: 1.5; }
  .quote-strip cite { margin-top: 11px; font-size: 8.5px; }
  .quote-mark { font-size: 105px; right: 12px; bottom: -26px; }

  .site-footer { flex-direction: column; align-items: flex-start; gap: 5px; padding: 0 18px 24px; font-size: 8.5px; }

  .word-popover {
    top: auto !important;
    right: 0;
    bottom: 0;
    left: 0 !important;
    width: auto;
    max-height: 82vh;
    overflow-y: auto;
    padding: 21px 20px calc(19px + env(safe-area-inset-bottom));
    border-right: 0;
    border-bottom: 0;
    border-left: 0;
    border-radius: 22px 22px 0 0;
    animation: sheet-up .24s cubic-bezier(.2, .8, .3, 1) both;
  }
  @keyframes sheet-up {
    from { opacity: 0; transform: translateY(18px); }
    to { opacity: 1; transform: translateY(0); }
  }
  .popover-scrim { display: block; }
  .popover-arrow { display: none; }
  .popover-word { font-size: 26px; }
  .definition-en { font-size: 15px; }
  .toast { bottom: 22px; max-width: calc(100vw - 32px); white-space: normal; text-align: center; }

  .modal-layer { padding: 10px; align-items: end; }
  .modal-card {
    width: 100%;
    max-height: 92vh;
    padding: 25px 20px 21px;
    border-radius: 23px 23px 0 0;
    border-bottom: 0;
  }
  .modal-header h2 { font-size: 28px; }
  .library-grid { grid-template-columns: 1fr; gap: 10px; margin-top: 19px; }
  .library-item { min-height: 164px; padding: 16px 17px 15px; }
  .library-item h3 { font-size: 20px; }
  .modal-footer { flex-direction: column; gap: 5px; font-size: 8.5px; }
  .result-dialog { padding: 28px 21px 24px; border-radius: 23px 23px 0 0; overflow-y: auto; }
  .result-orbit { width: 114px; height: 114px; margin: 15px auto 17px; }
  .result-score strong { font-size: 41px; }
  .result-dialog h2 { font-size: 23px; }
  .result-burst span:nth-child(1) { left: 28px; }
  .result-burst span:nth-child(2) { right: 24px; }
  .result-actions { grid-template-columns: 1fr; }
  .result-actions .secondary-button { order: 2; }
  .result-details { margin-top: 18px; }

  .vocab-drawer { width: 100vw; padding: 24px 20px 18px; }
}

@media (max-width: 400px) {
  .site-header { gap: 8px; }
  .brand-text strong { font-size: 18px; }
  .main-nav { padding: 1px; }
  .main-nav .nav-link { padding-inline: 8px; font-size: 10px; }
  .header-actions { gap: 5px; margin-left: auto; }
  .reading-header h1 { font-size: 27px; }
  .reading-info { gap: 6px 9px; }
  .reading-card { padding: 23px 17px 17px; }
  .quiz-card { padding: 19px 13px 14px; }
  .quiz-header { gap: 7px; }
  .quiz-header h2 { font-size: 21px; letter-spacing: normal; }
  .quiz-kicker { font-size: 8px; letter-spacing: .14em; }
  .quiz-header-actions { gap: 4px; }
  .progress-orbit { width: 49px; height: 49px; padding-top: 17px; }
  .orbit-number { font-size: 14px; }
  .quiz-hide-button { height: 24px; padding: 0 6px; font-size: 8px; }
  .quiz-hide-button svg { width: 11px; height: 11px; }
  .quiz-summary { margin-top: 12px; }
  .question-nav { margin-top: 10px; gap: 4px; }
  .q-nav-btn { width: 24px; height: 24px; }
  .quiz-footer { margin-top: 10px; }
  .option { font-size: calc(12.5px * var(--type-scale)); }
  .result-details strong { font-size: 12px; }
  .quiz-restore { right: 13px; bottom: calc(15px + env(safe-area-inset-bottom)); height: 42px; gap: 6px; padding: 0 11px 0 7px; font-size: 10.5px; }
  .quiz-restore-icon { width: 27px; height: 27px; }
  .quiz-restore-count { min-width: 28px; height: 19px; font-size: 8.5px; }
  body.quiz-hidden .workspace { padding-bottom: 94px; }
}

@media (max-width: 350px) {
  .main-nav { padding: 1px 3px; }
  .main-nav #practiceNav { display: none; }
  .main-nav .nav-link { white-space: nowrap; padding-inline: 9px; }
  .quiz-hide-button span { display: none; }
  .quiz-hide-button { width: 25px; padding: 0; }
  .quiz-header h2 { font-size: 20px; }
  .progress-orbit { width: 46px; height: 46px; padding-top: 16px; }
  .quiz-restore-label { display: none; }
}

/* 导航到 5 项后，窄屏一行放不下：让页头折成两行，导航单独占一行并可横向滑动 */
@media (max-width: 620px) {
  .site-header {
    height: auto;
    min-height: 64px;
    flex-wrap: wrap;
    padding-top: 10px;
    padding-bottom: 8px;
    row-gap: 8px;
  }
  .main-nav {
    order: 4;
    flex: 1 0 100%;
    justify-content: flex-start;
    overflow-x: auto;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }
  .main-nav::-webkit-scrollbar { display: none; }
  .header-actions { margin-left: auto; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
}


/* =========================================================
   篇目增多后的适配（16 篇）：圆点横向滚动，不挤压头部
   ========================================================= */
.passage-dots {
  max-width: clamp(132px, 32vw, 300px);
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding-bottom: 1px;
}
.passage-dots::-webkit-scrollbar { display: none; }
.passage-dot { flex: 0 0 auto; }

@media (max-width: 760px) {
  .passage-dots { max-width: 112px; }
}

/* 全量词库里部分词条没有词性标签，空标签不占位 */
.sense-pos:empty { display: none; }

/* 正文按需加载占位：打开某篇的瞬间先给个明确的等待态 */
.reading-loading {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 220px;
  color: var(--ink-soft);
  font-size: .92em;
}
.reading-loading-dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--green);
  animation: reading-loading-pulse 1.1s ease-in-out infinite;
}
@keyframes reading-loading-pulse {
  0%, 100% { opacity: .3; transform: scale(.8); }
  50% { opacity: 1; transform: scale(1); }
}
@media (prefers-reduced-motion: reduce) {
  .reading-loading-dot { animation: none; opacity: .7; }
}

/* 圆点行放不下时右侧淡出，不再露半个圆点；滚到末尾淡出消失 */
.passage-dots.is-scrollable:not(.is-at-end) {
  mask-image: linear-gradient(90deg, #000 calc(100% - 16px), transparent);
  -webkit-mask-image: linear-gradient(90deg, #000 calc(100% - 16px), transparent);
}
/* 圆点只有 5px 高，点击区太小：按钮本体撑到 19px 高，视觉上的小横条用 ::before 画 */
.passage-dot {
  position: relative;
  height: 19px;
  border-radius: 0;
  background: transparent;
}
.passage-dot::before {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 5px;
  margin-top: -2.5px;
  border-radius: 999px;
  background: var(--line-strong);
  transition: background-color .2s ease, opacity .2s ease;
}
.passage-dot:hover { background: transparent; }
.passage-dot:hover::before { background: var(--ink-faint); }
.passage-dot.is-done { background: transparent; }
.passage-dot.is-done::before { background: color-mix(in srgb, var(--green) 46%, var(--line)); }
.passage-dot.is-active { background: transparent; }
.passage-dot.is-active::before { background: var(--green); }
/* =========================================================
   选词填空
   ========================================================= */
.cloze-block {
  margin: 36px -4px 0;
  padding: 24px 24px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: color-mix(in srgb, var(--bg) 42%, var(--paper));
}
.cloze-head { display: flex; flex-direction: column; gap: 8px; }
.cloze-title-row { display: flex; align-items: center; gap: 10px; }
.cloze-title-row h2 {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-zh-serif);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: .07em;
}
.cloze-badge {
  padding: 2px 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink-faint);
  font-size: 9px;
  letter-spacing: .1em;
}
.cloze-instructions {
  margin: 0;
  color: var(--ink-faint);
  font-size: 11px;
  line-height: 1.8;
  letter-spacing: .01em;
}
.cloze-bank {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 6px 14px;
  margin: 16px 0 0;
  padding: 13px 15px;
  border: 1px dashed color-mix(in srgb, var(--line-strong) 80%, transparent);
  border-radius: var(--radius-md);
  list-style: none;
  background: color-mix(in srgb, var(--paper) 60%, transparent);
}
.cloze-bank-item {
  display: flex;
  align-items: baseline;
  gap: 7px;
  color: var(--ink-soft);
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: .01em;
}
.cloze-bank-word {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  padding: 0;
  border: 0;
  background: none;
  color: inherit;
  font: inherit;
  letter-spacing: inherit;
  text-align: left;
  cursor: pointer;
}
.cloze-bank-word:focus-visible { outline: none; }
.cloze-bank-text {
  border-bottom: 1px dotted transparent;
  transition: color .14s ease, border-color .14s ease;
}
.cloze-bank-word:hover .cloze-bank-text,
.cloze-bank-word:focus-visible .cloze-bank-text {
  color: var(--ink);
  border-bottom-color: color-mix(in srgb, var(--green) 55%, transparent);
}
.cloze-bank-item.is-used { opacity: .42; }
.cloze-bank-item.is-used .cloze-bank-text {
  border-bottom-color: color-mix(in srgb, var(--green) 30%, transparent);
}
.cloze-bank-letter {
  color: var(--accent);
  font-family: var(--font-ui);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: .1em;
}
.cloze-passage {
  margin-top: 20px;
  color: var(--ink);
  font-family: var(--font-serif);
  font-size: var(--reading-size);
  line-height: 2;
  letter-spacing: .002em;
}
.cloze-paragraph { margin: 0 0 .95em; }
.cloze-paragraph:last-child { margin-bottom: 0; }
.cloze-blank { position: relative; display: inline-flex; align-items: baseline; gap: 3px; }
.cloze-pick {
  display: inline-flex;
  align-items: baseline;
  gap: .35em;
  min-width: 4.6em;
  max-width: 11em;
  margin: 0 .1em;
  padding: .18em .42em .2em;
  border: 0;
  border-bottom: 1.5px solid color-mix(in srgb, var(--green) 55%, transparent);
  border-radius: 3px 3px 0 0;
  background: color-mix(in srgb, var(--green) 7%, transparent);
  color: var(--ink);
  font-family: var(--font-ui);
  font-size: .62em;
  letter-spacing: .01em;
  text-align: left;
  cursor: pointer;
}
.cloze-pick:disabled { cursor: default; }
.cloze-pick:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.cloze-pick-label {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.cloze-caret {
  flex: none;
  width: 0;
  height: 0;
  margin-left: auto;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 4px solid color-mix(in srgb, var(--ink) 45%, transparent);
}
.cloze-blank.is-right .cloze-pick { color: var(--green); border-bottom-color: var(--green); font-weight: 600; }
.cloze-blank.is-wrong .cloze-pick { color: #b4472f; border-bottom-color: #b4472f; }
.cloze-menu-layer {
  position: fixed;
  inset: 0 auto auto 0;
  z-index: 70;
}
.cloze-menu-layer[hidden] { display: none; }
.cloze-menu {
  display: grid;
  gap: 1px;
  max-height: 232px;
  overflow-y: auto;
  padding: 5px;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  background: var(--paper-raised);
  box-shadow: 0 18px 40px -20px rgba(0, 0, 0, .55);
}
.cloze-option {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 6px 8px;
  border: 0;
  border-radius: 7px;
  background: none;
  color: var(--ink-soft);
  font-family: var(--font-ui);
  font-size: 12px;
  letter-spacing: .01em;
  text-align: left;
  cursor: pointer;
}
.cloze-option:hover:not(:disabled),
.cloze-option:focus-visible {
  background: color-mix(in srgb, var(--green) 10%, transparent);
  color: var(--ink);
  outline: none;
}
.cloze-option[data-current] { color: var(--green); }
.cloze-option.is-taken {
  opacity: .35;
  text-decoration: line-through;
  cursor: default;
}
.cloze-option-letter {
  flex: none;
  color: var(--accent);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: .1em;
}
.cloze-answer {
  color: var(--green);
  font-family: var(--font-ui);
  font-size: .58em;
  letter-spacing: .02em;
}
.cloze-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid color-mix(in srgb, var(--line) 80%, transparent);
}
.cloze-result { color: var(--ink-faint); font-size: 10.5px; letter-spacing: .02em; }
.cloze-result.is-warn { color: #b4472f; }
.cloze-result.is-success { color: var(--green); font-weight: 600; }

@media (max-width: 760px) {
  .cloze-block { margin: 28px 0 0; padding: 20px 17px 17px; border-radius: var(--radius-md); }
  .cloze-bank { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 5px 10px; padding: 11px 12px; }
  .cloze-bank-item { font-size: 12px; }
  .cloze-blank .cloze-pick { font-size: .66em; max-width: 9.5em; }
  .cloze-actions { flex-wrap: wrap; gap: 10px; }
  .cloze-result { width: 100%; }
}
/* ---- 今日进度 / 积分（学习激励层） ---------------------------------- */
.points-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px 7px 10px;
  border: 1px solid color-mix(in srgb, var(--green) 20%, transparent);
  border-radius: 999px;
  background: color-mix(in srgb, var(--green) 6%, transparent);
  color: var(--ink);
  font-family: var(--font-ui);
  font-size: 12.5px;
  cursor: pointer;
  transition: border-color .15s ease, background-color .15s ease;
}
.points-chip:hover {
  border-color: color-mix(in srgb, var(--green) 40%, transparent);
  background: color-mix(in srgb, var(--green) 10%, transparent);
}
.points-chip-bar {
  position: relative;
  width: 42px;
  height: 4px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--green) 16%, transparent);
  overflow: hidden;
}
.points-chip-bar > span {
  display: block;
  height: 100%;
  width: 0%;
  border-radius: inherit;
  background: var(--green);
  transition: width .3s ease;
}
.points-chip-value { white-space: nowrap; color: var(--ink-soft); letter-spacing: .01em; }
.points-chip-value strong { color: var(--ink); font-weight: 700; }

.points-dialog { width: min(92vw, 460px); }
.points-body { padding: 4px 26px 24px; display: grid; gap: 14px; }
.points-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 16px;
  border: 1px solid color-mix(in srgb, var(--green) 16%, transparent);
  border-radius: 14px;
  background: color-mix(in srgb, var(--green) 5%, transparent);
}
.points-total { display: grid; gap: 2px; }
.points-total strong { font-family: var(--font-display); font-size: 30px; line-height: 1; color: var(--ink); }
.points-total span { font-family: var(--font-ui); font-size: 11.5px; color: var(--ink-faint); letter-spacing: .04em; }
.points-rows { display: grid; gap: 6px; font-family: var(--font-ui); font-size: 12px; color: var(--ink-soft); }
.points-rows div { display: flex; justify-content: space-between; gap: 14px; min-width: 132px; }
.points-rows strong { color: var(--ink); font-weight: 600; }
.points-track {
  height: 6px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--green) 12%, transparent);
  overflow: hidden;
}
.points-track > span {
  display: block; height: 100%; width: 0%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--green), color-mix(in srgb, var(--green) 60%, #8fb69c));
  transition: width .35s ease;
}
.points-progress-label { margin: 0; font-family: var(--font-ui); font-size: 12px; color: var(--ink-faint); }
.points-progress-label strong { color: var(--ink); }
.points-parts { list-style: none; margin: 0; padding: 0; display: grid; gap: 2px; }
.points-parts li {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 2px;
  font-family: var(--font-ui); font-size: 13px; color: var(--ink-soft);
  border-bottom: 1px solid color-mix(in srgb, var(--ink) 6%, transparent);
}
.points-parts li:last-child { border-bottom: 0; }
.points-parts .part-mark {
  width: 18px; height: 18px; flex: 0 0 18px;
  display: grid; place-items: center;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--green) 30%, transparent);
  color: transparent;
  font-size: 11px;
}
.points-parts li.is-done { color: var(--ink); }
.points-parts li.is-done .part-mark { background: var(--green); border-color: var(--green); color: var(--green-contrast); }
.points-parts .part-weight { margin-left: auto; font-size: 11.5px; color: var(--ink-faint); }
.points-actions { display: flex; gap: 10px; }
.points-actions button { flex: 1; }
.points-actions button[disabled] { opacity: .5; cursor: default; }
.points-note { margin: 0; font-family: var(--font-ui); font-size: 11px; line-height: 1.5; color: var(--ink-faint); }

@media (max-width: 860px) {
  .points-chip-bar { display: none; }
  .points-chip { padding: 7px 11px; }
  .points-body { padding: 4px 18px 20px; }
  .points-summary { flex-direction: column; align-items: flex-start; gap: 10px; }
  .points-rows { width: 100%; }
}

/* 页头在窄屏不再挤压：导航不换行，积分胶囊紧跟在操作区 */
.main-nav .nav-link { white-space: nowrap; }
@media (max-width: 760px) {
  #practiceNav { display: none; }
  .points-chip { padding: 6px 9px; font-size: 11.5px; }
  .points-chip-value strong { font-size: 12px; }
}
@media (max-width: 400px) {
  .points-chip { padding: 6px 8px; }
}

/* ---------- 词根词缀 / 同义反义词（点词卡与单词页共用） ---------- */

.root-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.root-chip {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 3px;
  max-width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--paper-raised);
}

.root-chip b {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.1;
  white-space: nowrap;
  color: var(--accent);
}

.root-chip span {
  font-family: var(--font-zh-serif);
  font-size: 12.5px;
  line-height: 1.45;
  color: var(--ink-soft);
}

.root-chip em {
  font-family: var(--font-en);
  font-size: 12px;
  font-style: normal;
  color: var(--ink-faint);
}

.root-empty {
  margin: 0;
  font-family: var(--font-ui);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--ink-faint);
}

.popover-roots,
.popover-relations {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
}

.popover-roots .root-chip {
  padding: 6px 9px;
}

.popover-roots .root-chip b {
  font-size: 12.5px;
}

.popover-roots .root-chip span {
  font-size: 11.5px;
}

.popover-roots .root-chip em {
  display: none;
}

.relations {
  display: grid;
  gap: 7px;
}

.relation-line {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin: 0;
  font-family: var(--font-en);
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--ink);
}

.relation-tag {
  flex: none;
  padding: 1px 6px;
  border-radius: 5px;
  border: 1px solid color-mix(in srgb, var(--green) 40%, transparent);
  font-family: var(--font-ui);
  font-size: 11px;
  line-height: 1.5;
  color: var(--green);
}

.relation-tag--ant {
  border-color: color-mix(in srgb, var(--accent) 45%, transparent);
  color: var(--accent);
}

.relation-words {
  min-width: 0;
}
.relation-words .lookup-word,
.relation-word {
  font-family: inherit;
  font-size: inherit;
  color: var(--ink);
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  border-bottom: 1px dotted color-mix(in srgb, var(--green) 45%, transparent);
}

.relation-words .lookup-word:hover,
.relation-words .lookup-word:focus-visible {
  color: var(--green);
  outline: none;
}

.relation-sep {
  padding: 0 5px;
  color: var(--ink-faint);
}

/* 共用词卡（assets/js/word-popover.js）里的同义词/反义词按钮 */
.word-popover .relation-words button {
  font: inherit;
  color: var(--green);
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  text-decoration: underline;
  text-decoration-color: color-mix(in srgb, var(--green) 34%, transparent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
.word-popover .relation-words button:hover { text-decoration-color: var(--green); }
.word-popover .sense-line { display: flex; gap: 8px; margin: 0 0 6px; font-size: 14px; }
.word-popover .sense-pos { color: var(--ink-soft); min-width: 34px; }
.word-popover .sense-zh { color: var(--ink); }


/* 阅读名言下方的中文翻译 */
.quote-strip .quote-zh {
  margin: 8px 0 0;
  padding: 0;
  font-family: var(--font-zh-serif);
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink-soft);
  letter-spacing: .02em;
}


/* 词库义项（CEFR 分级 + 例句）与派生词 / 考试标签 */
.word-popover .sense-line--rich { display: flex; align-items: center; gap: 8px; margin: 10px 0 4px; }
.word-popover .sense-line--rich:first-child { margin-top: 0; }
.word-popover .sense-pos { color: var(--ink-soft); font-size: 13px; }
.word-popover .sense-level {
  font-size: 10px; letter-spacing: .08em; padding: 1px 5px; border-radius: 5px;
  background: rgba(36, 90, 70, .1); color: var(--green);
}
.word-popover .sense-en { margin: 0 0 3px; font-size: 15px; line-height: 1.5; color: var(--ink); }
.word-popover .sense-zh { display: block; margin: 0 0 6px; font-size: 14px; color: var(--ink-soft); }
.word-popover .sense-ex {
  margin: 0 0 10px; padding-left: 9px; border-left: 2px solid rgba(36, 90, 70, .18);
  font-family: var(--font-serif); font-size: 13.5px; line-height: 1.5; color: var(--ink);
}
.word-popover .sense-ex-zh { display: block; margin-top: 3px; font-family: var(--font-zh-serif); font-size: 12.5px; color: var(--ink-soft); }
.word-popover .word-forms, .word-popover .word-tags { margin: 10px 0 0; display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.word-popover .word-forms-label { font-size: 11px; letter-spacing: .1em; color: var(--ink-soft); }
.word-popover .form-chip {
  font-size: 12px; padding: 2px 6px; border-radius: 6px; background: rgba(36, 90, 70, .06);
}
.word-popover .form-chip em { font-style: normal; color: var(--ink-soft); margin-right: 4px; }
.word-popover .word-tags .tag-chip {
  font-size: 11px; padding: 2px 7px; border-radius: 999px;
  border: 1px solid rgba(36, 90, 70, .2); color: var(--green);
}


/* 词库义项与例句里的可点词：去掉按钮边框，只留下划线 */
.popover-senses .lookup-word,
.sense-en .lookup-word,
.sense-ex .lookup-word {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  text-decoration: underline;
  text-decoration-color: color-mix(in srgb, var(--green) 34%, transparent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
.popover-senses .lookup-word:hover { color: var(--green); text-decoration-color: var(--green); }
.sense--rich { margin-bottom: 14px; }
.sense--rich .sense-pos { font-weight: 600; }
.sense-en { margin: 6px 0 2px; font-family: var(--font-serif); }
.sense-zh-text { margin: 0 0 4px; color: var(--ink-soft); }
.sense-ex { margin: 4px 0 0; font-family: var(--font-serif); color: var(--ink-soft); }
.sense-ex-zh { display: block; margin-top: 2px; font-family: var(--font-zh-serif); font-size: 13px; }


/* ===== 单词卡（assets/js/word-popover.js 构建的 DOM） ===== */
.word-popover.wp-card {
  width: min(400px, calc(100vw - 28px));
  max-height: min(72vh, 620px);
  overflow-y: auto;
  padding: 20px 20px 16px;
  border-radius: 22px;
  background: var(--paper);
  box-shadow: var(--shadow-pop);
}
.wp-bar { display: flex; align-items: center; justify-content: space-between; margin: -6px 0 10px; }
.wp-back {
  display: inline-flex; align-items: center; gap: 6px;
  font: inherit; font-size: 13px; color: var(--ink-soft);
  background: none; border: 0; padding: 0; cursor: pointer;
}
.wp-level { font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-faint); }

.wp-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.wp-title { display: flex; align-items: baseline; flex-wrap: wrap; gap: 8px; }
.wp-word { font-family: var(--font-serif); font-size: 30px; line-height: 1.15; letter-spacing: -.015em; }
.wp-phon { font-family: var(--font-mono, ui-monospace); font-size: 13px; color: var(--ink-soft); }
.wp-speak {
  align-self: center;
  display: inline-flex; align-items: center; justify-content: center;
  width: 28px; height: 28px; border-radius: 999px;
  border: 0; background: none; color: var(--green); cursor: pointer;
}
.wp-speak:hover { background: color-mix(in srgb, var(--green) 10%, transparent); }
.wp-close {
  display: inline-flex; align-items: center; justify-content: center;
  width: 26px; height: 26px; border-radius: 999px;
  border: 1px solid var(--line); background: none; color: var(--ink-soft); cursor: pointer;
}
.wp-form { margin-top: 6px; font-size: 12px; color: var(--ink-soft); }

.wp-senses { margin-top: 14px; }
.wp-pos {
  display: inline-block;
  margin: 12px 0 8px;
  padding: 3px 9px;
  border-radius: 6px;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-serif);
  font-size: 12px;
  font-style: italic;
  letter-spacing: .01em;
}
.wp-pos:first-child { margin-top: 0; }
.wp-sense { display: flex; align-items: flex-start; gap: 8px; margin: 0 0 4px; }
.wp-def { font-family: var(--font-serif); font-size: 15px; line-height: 1.45; }
.wp-zh { margin: 0 0 10px; font-size: 13px; color: var(--ink-soft); }
.wp-def-en { margin-top: 8px; font-family: var(--font-serif); font-size: 14px; color: var(--ink-soft); }

.wp-cefr {
  flex: none;
  margin-top: 3px;
  padding: 1px 7px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .02em;
  background: #e6e1d6;
  color: #57534a;
}
.wp-cefr.is-a { background: #d9ecd2; color: #2f6135; }
.wp-cefr.is-b { background: #f7dfb4; color: #8a5a10; }
.wp-cefr.is-c { background: #ddd8ef; color: #4c3f7a; }

.wp-w { background: none; border: 0; padding: 0; font: inherit; color: inherit; }
.wp-w.is-link {
  cursor: pointer;
  text-decoration: underline;
  text-decoration-color: color-mix(in srgb, var(--green) 32%, transparent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
.wp-w.is-link:hover { color: var(--green); }

.wp-tabs {
  display: flex; gap: 18px;
  margin: 16px 0 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
  overflow-x: auto;
}
.wp-tab {
  flex: none;
  font: inherit; font-size: 14px;
  color: var(--ink-faint);
  background: none; border: 0; padding: 0; cursor: pointer;
}
.wp-tab.is-active { color: var(--green); font-weight: 600; }
.wp-panel { min-height: 40px; }
.wp-hint { margin: 0 0 8px; font-size: 11px; letter-spacing: .06em; color: var(--ink-faint); }

.wp-ex-item { margin-bottom: 12px; padding-left: 12px; border-left: 2px solid color-mix(in srgb, var(--green) 24%, transparent); }
.wp-ex-en { margin: 0; font-family: var(--font-serif); font-size: 15px; line-height: 1.5; cursor: pointer; }
.wp-ex-zh { margin: 4px 0 0; font-size: 13px; color: var(--ink-soft); }
.wp-ex-src { margin: 4px 0 0; font-size: 11px; color: var(--ink-faint); }

.wp-rel-group { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; margin-bottom: 10px; }
.wp-tag {
  flex: none;
  padding: 1px 7px;
  border-radius: 999px;
  border: 1px solid var(--line);
  font-size: 11px;
  color: var(--ink-soft);
}
.wp-chip {
  font: inherit; font-size: 14px;
  padding: 2px 9px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: none; color: var(--ink);
  cursor: pointer;
}
.wp-chip:hover { border-color: var(--green); color: var(--green); }
.wp-chip.is-static { cursor: default; color: var(--ink-soft); }
.wp-rel-zh { margin: -4px 0 12px; font-size: 12px; color: var(--ink-soft); }

.wp-empty { font-size: 13px; color: var(--ink-faint); }
.wp-actions { margin-top: 14px; padding-top: 12px; border-top: 1px solid var(--line); }
.wp-save {
  width: 100%;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 14px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: none; color: var(--ink);
  font: inherit; font-size: 14px; cursor: pointer;
}
.wp-save:hover { border-color: var(--green); color: var(--green); }
.wp-save.is-saved { border-color: var(--green); color: var(--green); background: color-mix(in srgb, var(--green) 8%, transparent); }

@media (max-width: 760px) {
  .word-popover.wp-card.is-sheet {
    position: fixed; left: 0; right: 0; bottom: 0; top: auto;
    width: 100%; max-height: 78vh;
    border-radius: 22px 22px 0 0;
  }
  .wp-word { font-size: 26px; }
}


/* 中文默认模糊，点一下才看清（和例句翻译一致的体验） */
.wp-zh { filter: blur(4px); transition: filter .18s ease; cursor: pointer; user-select: none; }
.wp-zh[data-shown] { filter: none; }
.wp-zh-tag {
  display: inline-block;
  margin-right: 6px;
  padding: 0 5px;
  border-radius: 4px;
  background: color-mix(in srgb, var(--green) 12%, transparent);
  color: var(--green);
  font-size: 11px;
}
.wp-ex-zh { filter: blur(4px); transition: filter .18s ease; cursor: pointer; }
.wp-ex-zh.wp-ex-shown { filter: none; }

.wp-base-link {
  font: inherit;
  color: var(--green);
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  text-decoration-color: color-mix(in srgb, var(--green) 45%, transparent);
}
.wp-base-link:hover { text-decoration-color: var(--green); }


/* 词根页签：每行 成分类型 + 成分 + 中文释义 */
.wp-root-row { display: flex; align-items: baseline; gap: 8px; padding: 5px 0; border-bottom: 1px dashed color-mix(in srgb, var(--ink) 10%, transparent); }
.wp-root-row:last-child { border-bottom: 0; }
.wp-root-type {
  flex: 0 0 auto;
  font-size: 11px;
  padding: 1px 6px;
  border-radius: 4px;
  background: color-mix(in srgb, var(--green) 12%, transparent);
  color: var(--green);
}
.wp-root-type.is-prefix { background: color-mix(in srgb, #b07d2b 16%, transparent); color: #8a5f1c; }
.wp-root-type.is-suffix { background: color-mix(in srgb, #4a6fa5 16%, transparent); color: #3a5a86; }
.wp-root-part {
  font: inherit;
  font-family: var(--font-serif);
  color: var(--green);
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  text-decoration-color: color-mix(in srgb, var(--green) 40%, transparent);
}
.wp-root-part:hover { text-decoration-color: var(--green); }
.wp-root-m { color: var(--ink-soft); font-size: 13px; }