/* ============================================================================
   WORDS · 朗读室 — 样式表
   零依赖、无构建。颜色全部走自定义属性，深/浅两套由 html[data-theme] 切换。
   ----------------------------------------------------------------------------
   约定：
     · 英文引文一律 --font-serif，中文释义一律 --font-sans —— 这是本页的
       基本节奏，改动前先想清楚是不是要破坏它。
     · 窄屏 grid 用 minmax(0, 1fr) / min(100%, N)，不要写裸 1fr：
       1fr 的最小尺寸是 auto，会被长英文单词撑破视口。
   ========================================================================== */

/* ---------- tokens ---------- */
:root {
  --bg: #0a0e17;
  --bg-elev: #101728;
  --panel: rgba(17, 24, 39, 0.66);
  --panel-solid: #111827;
  --line: rgba(255, 255, 255, 0.09);
  --line-strong: rgba(255, 255, 255, 0.18);
  --ink: #f2f5fa;
  --ink-2: #9aa8bd;
  --ink-3: #78879b;
  --accent: #a5b4fc;
  --accent-2: #f472b6;
  --accent-soft: rgba(129, 140, 248, 0.14);
  --accent-line: rgba(165, 180, 252, 0.45);
  --shadow: 0 18px 44px -22px rgba(0, 0, 0, 0.9);
  --shadow-hover: 0 26px 60px -24px rgba(0, 0, 0, 0.95), 0 0 0 1px var(--accent-line);
  --scrim: rgba(4, 7, 13, 0.66);
  --glow-a: rgba(99, 102, 241, 0.16);
  --glow-b: rgba(236, 72, 153, 0.09);

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "HarmonyOS Sans SC", "MiSans", Roboto, "PingFang SC", "Hiragino Sans GB", "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --font-serif: "Newsreader", "Charter", "Source Serif 4", "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, "Times New Roman", "Songti SC", serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;

  --r-sm: 10px;
  --r-md: 16px;
  --r-lg: 22px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --t: 0.32s var(--ease);
  --maxw: 1180px;
  --bar-h: 60px;
  --safe-top: env(safe-area-inset-top, 0px);
}

html[data-theme="light"] {
  --bg: #f7f8fb;
  --bg-elev: #ffffff;
  --panel: rgba(255, 255, 255, 0.88);
  --panel-solid: #ffffff;
  --line: rgba(15, 23, 42, 0.10);
  --line-strong: rgba(15, 23, 42, 0.20);
  --ink: #0f172a;
  --ink-2: #45536b;
  --ink-3: #64748b;
  --accent: #4f46e5;
  --accent-2: #be185d;
  --accent-soft: rgba(79, 70, 229, 0.08);
  --accent-line: rgba(79, 70, 229, 0.32);
  --shadow: 0 18px 40px -26px rgba(15, 23, 42, 0.35);
  --shadow-hover: 0 26px 56px -28px rgba(15, 23, 42, 0.4), 0 0 0 1px var(--accent-line);
  --scrim: rgba(15, 23, 42, 0.34);
  --glow-a: rgba(99, 102, 241, 0.10);
  --glow-b: rgba(219, 39, 119, 0.06);
}
html[data-theme="light"] { color-scheme: light; }
html[data-theme="dark"] { color-scheme: dark; }

/* ---------- base ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--bar-h) + 24px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-sans);
  color: var(--ink);
  background-color: var(--bg);
  background-image:
    radial-gradient(1000px 520px at 8% -6%, var(--glow-a), transparent 62%),
    radial-gradient(820px 460px at 98% 4%, var(--glow-b), transparent 60%);
  background-repeat: no-repeat;
  background-size: 100% 820px, 100% 760px;
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.35s ease, color 0.35s ease;
}

h1, h2, h3, h4 { margin: 0; line-height: 1.2; letter-spacing: -0.015em; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
button { font: inherit; color: inherit; cursor: pointer; }
a { color: inherit; text-decoration: none; }
img, svg { display: block; }

::selection { background: var(--accent-soft); color: var(--ink); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

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

.skip-link {
  position: fixed; top: -60px; left: 16px; z-index: 200;
  padding: 10px 16px; border-radius: 0 0 var(--r-sm) var(--r-sm);
  background: var(--accent); color: var(--bg);
  font-size: 0.86rem; font-weight: 700; transition: top 0.2s ease;
}
.skip-link:focus { top: 0; }

/* ---------- topbar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 60;
  padding-top: var(--safe-top);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  backdrop-filter: blur(18px) saturate(160%);
  border-bottom: 1px solid var(--line);
}
@supports not (background: color-mix(in srgb, red 50%, blue)) {
  .topbar { background: var(--bg); }
}

.topbar-in {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
  height: var(--bar-h);
  display: flex;
  align-items: center;
  gap: 20px;
}

.brand { display: flex; align-items: center; gap: 11px; flex: 0 0 auto; }
.brand-mark {
  width: 32px; height: 32px; border-radius: 9px;
  display: grid; place-items: center;
  font-size: 0.74rem; font-weight: 800; letter-spacing: 0.02em;
  color: var(--bg);
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text b { font-size: 0.92rem; letter-spacing: 0.14em; }
.brand-text i { font-style: normal; font-size: 0.68rem; color: var(--ink-3); letter-spacing: 0.18em; }

.topnav { display: flex; align-items: center; gap: 4px; margin-left: 8px; }
.topnav a {
  padding: 7px 11px; border-radius: 8px;
  font-size: 0.84rem; color: var(--ink-2);
  transition: color 0.2s ease, background 0.2s ease;
}
.topnav a:hover { color: var(--ink); background: var(--accent-soft); }
.topnav-back { margin-left: 4px; }

.tools { margin-left: auto; display: flex; align-items: center; gap: 8px; }

.pill-btn {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 7px 13px; border-radius: 999px;
  border: 1px solid var(--line); background: transparent;
  font-size: 0.8rem; color: var(--ink-2);
  transition: var(--t);
}
.pill-btn .dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--ink-3); transition: var(--t);
}
.pill-btn[aria-pressed="true"] {
  border-color: var(--accent-line);
  background: var(--accent-soft);
  color: var(--ink);
}
.pill-btn[aria-pressed="true"] .dot { background: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.pill-btn:hover { border-color: var(--line-strong); color: var(--ink); }

.icon-btn {
  width: 34px; height: 34px; border-radius: 9px;
  display: grid; place-items: center;
  border: 1px solid var(--line); background: transparent;
  color: var(--ink-2); transition: var(--t);
}
.icon-btn:hover { color: var(--ink); border-color: var(--line-strong); background: var(--accent-soft); }
.icon-btn[aria-pressed="true"] { color: var(--accent-2); border-color: var(--accent-line); background: var(--accent-soft); }

/* 图标显示「将要切到的模式」：浅色下显示月亮（点一下变深色） */
.ic-sun { display: none; }
.ic-moon { display: block; }
html[data-theme="dark"] .ic-sun { display: block; }
html[data-theme="dark"] .ic-moon { display: none; }

/* ---------- hero ---------- */
.hero {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 64px 24px 40px;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 48px;
  align-items: center;
}

.eyebrow {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.68rem; letter-spacing: 0.22em;
  color: var(--ink-3); text-transform: uppercase;
}
.eyebrow-line {
  width: 26px; height: 1px; background: var(--accent-line);
}

.hero h1 {
  margin-top: 18px;
  font-size: clamp(2.3rem, 5.2vw, 3.7rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.12;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(120deg, var(--accent) 0%, var(--accent-2) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.lede {
  margin-top: 20px;
  max-width: 46ch;
  font-size: 0.98rem;
  color: var(--ink-2);
  line-height: 1.85;
}

.hero-meta {
  margin-top: 28px;
  display: flex; gap: 34px; flex-wrap: wrap;
}
.hero-meta li { display: flex; flex-direction: column; }
.hero-meta b {
  font-size: 1.5rem; font-weight: 700; letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}
.hero-meta span { font-size: 0.74rem; color: var(--ink-3); letter-spacing: 0.08em; }

/* 今日一句 */
.today {
  position: relative;
  padding: 26px 26px 20px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--panel);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.today::before {
  content: "";
  position: absolute; inset: 0 auto 0 0; width: 3px;
  background: linear-gradient(180deg, var(--accent), var(--accent-2));
  opacity: 0.9;
}
.today::after {
  content: "\201C";
  position: absolute; top: -18px; right: 14px;
  font-family: var(--font-serif);
  font-size: 7rem; line-height: 1;
  color: var(--accent); opacity: 0.13;
  pointer-events: none;
}

.today-head {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}
.today-label {
  font-family: var(--font-mono);
  font-size: 0.64rem; letter-spacing: 0.2em;
  color: var(--ink-3);
}
.link-btn {
  border: 0; background: none; padding: 2px 0;
  font-size: 0.76rem; color: var(--accent);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}
.link-btn:hover { border-bottom-color: var(--accent); }

.today-quote {
  margin: 18px 0 0;
  font-family: var(--font-serif);
  font-size: clamp(1.02rem, 1.5vw, 1.22rem);
  line-height: 1.62;
  letter-spacing: -0.005em;
  color: var(--ink);
}
.today-zh {
  margin-top: 14px;
  font-size: 0.86rem;
  line-height: 1.8;
  color: var(--ink-2);
  transition: opacity 0.25s ease;
}
html[data-bi="off"] .today-zh { display: none; }

.today-foot {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  flex-wrap: wrap;
}
.today-by { font-size: 0.78rem; color: var(--ink-3); }
.today-actions { display: flex; gap: 8px; }

.ghost-btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 11px; border-radius: 8px;
  border: 1px solid var(--line); background: transparent;
  font-size: 0.76rem; color: var(--ink-2);
  transition: var(--t);
}
.ghost-btn:hover { color: var(--ink); border-color: var(--accent-line); background: var(--accent-soft); }
.ghost-btn.is-speaking { color: var(--accent-2); border-color: var(--accent-line); }

/* ---------- library ---------- */
.library {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 28px 24px 20px;
}

.lib-head {
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: 24px; flex-wrap: wrap;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}
.lib-heading h2 { font-size: 1.32rem; font-weight: 700; }
.result-count {
  margin-top: 6px;
  font-size: 0.78rem; color: var(--ink-3);
  font-variant-numeric: tabular-nums;
}

.lib-tools { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }

.search {
  position: relative;
  display: flex; align-items: center; gap: 8px;
  padding: 0 12px;
  height: 38px;
  min-width: 300px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel);
  color: var(--ink-3);
  transition: var(--t);
}
.search:focus-within { border-color: var(--accent-line); box-shadow: 0 0 0 3px var(--accent-soft); color: var(--ink-2); }
.search input {
  flex: 1; min-width: 0;
  border: 0; background: none; outline: none;
  font: inherit; font-size: 0.84rem; color: var(--ink);
  padding: 0;
}
.search input::placeholder { color: var(--ink-3); }
.search input::-webkit-search-cancel-button { -webkit-appearance: none; }
.search-clear {
  border: 0; background: none; padding: 0 2px;
  font-size: 1rem; line-height: 1; color: var(--ink-3);
}
.search-clear:hover { color: var(--ink); }

.today-head-tools { display: flex; align-items: center; gap: 8px; }

.lib-subtools {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
}

.sort-wrap {
  display: inline-flex; align-items: center;
}
.sort-select {
  height: 34px; padding: 0 10px;
  border: 1px solid var(--line); border-radius: 999px;
  background: var(--panel); color: var(--ink-2);
  font-size: 0.78rem; font-family: inherit;
  cursor: pointer; outline: none;
  transition: var(--t);
}
.sort-select:hover, .sort-select:focus {
  border-color: var(--accent-line); color: var(--ink);
}

.topic-bar {
  display: flex; gap: 8px;
  padding: 14px 0 4px;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}
.topic-bar::-webkit-scrollbar { display: none; }
.topic-pill {
  flex-shrink: 0;
  padding: 5px 12px; border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--panel); color: var(--ink-2);
  font-size: 0.76rem; font-family: inherit;
  transition: var(--t); cursor: pointer;
  white-space: nowrap;
}
.topic-pill:hover {
  color: var(--ink); border-color: var(--accent-line); background: var(--accent-soft);
}
.topic-pill.is-active {
  color: var(--accent); border-color: var(--accent-line);
  background: var(--accent-soft); font-weight: 600;
  box-shadow: inset 0 0 0 1px var(--accent-line);
}

.tabs {
  display: inline-flex; gap: 2px; padding: 3px;
  border: 1px solid var(--line); border-radius: 999px;
  background: var(--panel);
}
.tabs button {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 14px; border: 0; border-radius: 999px;
  background: transparent;
  font-size: 0.82rem; color: var(--ink-2);
  transition: var(--t);
}
.tabs button:hover { color: var(--ink); }
.tabs button[aria-selected="true"] {
  background: var(--accent-soft);
  color: var(--ink);
  box-shadow: inset 0 0 0 1px var(--accent-line);
}
.tab-badge {
  min-width: 18px; height: 18px; padding: 0 5px;
  border-radius: 999px;
  display: inline-grid; place-items: center;
  font-size: 0.66rem; font-variant-numeric: tabular-nums;
  background: var(--accent); color: var(--bg);
}
.tab-badge[data-empty="1"] { background: var(--line); color: var(--ink-3); }

/* ---------- grid ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 330px), 1fr));
  gap: 18px;
  margin-top: 24px;
  align-items: stretch;
}

.card {
  position: relative;
  display: flex; flex-direction: column;
  gap: 12px;
  padding: 20px 20px 16px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--panel);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  cursor: pointer;
  transition: transform 0.28s var(--ease), border-color 0.28s ease, box-shadow 0.28s ease, background 0.28s ease;
}
.card::before {
  content: "";
  position: absolute; inset: -1px -1px auto; height: 1px;
  border-radius: var(--r-md) var(--r-md) 0 0;
  background: linear-gradient(90deg, transparent, var(--accent), var(--accent-2), transparent);
  opacity: 0; transition: opacity 0.3s ease;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); background: var(--bg-elev); }
.card:hover::before { opacity: 1; }
.card.is-read .card-name::after {
  content: "已读";
  margin-left: 8px;
  font-size: 0.62rem; font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--ink-3);
  vertical-align: 2px;
}

.card-top { display: flex; align-items: center; justify-content: space-between; gap: 10px; }

.badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 3px 9px; border-radius: 999px;
  font-size: 0.66rem; font-weight: 600;
  letter-spacing: 0.06em;
  border: 1px solid transparent;
  white-space: nowrap;
}
.badge::before {
  content: ""; width: 5px; height: 5px; border-radius: 50%;
  background: currentColor;
}
.badge-speech { color: var(--accent); background: var(--accent-soft); border-color: var(--accent-line); }
.badge-economist { color: var(--accent-2); background: color-mix(in srgb, var(--accent-2) 12%, transparent); border-color: color-mix(in srgb, var(--accent-2) 38%, transparent); }

.card-name {
  font-size: 0.96rem; font-weight: 700;
  letter-spacing: -0.01em;
}
.card-meta {
  margin-top: -6px;
  font-size: 0.74rem; color: var(--ink-3);
  line-height: 1.5;
}

.card-quote {
  position: relative;
  margin: 0;
  padding-left: 13px;
  font-family: var(--font-serif);
  font-size: 1rem;
  line-height: 1.62;
  letter-spacing: -0.003em;
  color: var(--ink);
  border-left: 2px solid var(--accent-line);
}
.card-quote.is-short { font-size: 1.1rem; }

.card-zh {
  font-size: 0.82rem;
  line-height: 1.75;
  color: var(--ink-2);
}
html[data-bi="off"] .card-zh { display: none; }

.card-tags {
  display: flex; flex-wrap: wrap; gap: 6px;
  margin-top: auto;
  padding-top: 4px;
}
.card-tags li {
  padding: 2px 8px; border-radius: 6px;
  font-size: 0.68rem; color: var(--ink-3);
  border: 1px solid var(--line);
  transition: var(--t);
}
.card-tags li:hover { color: var(--accent); border-color: var(--accent-line); }

.card-foot {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}
.card-foot-l, .card-foot-r { display: flex; align-items: center; gap: 6px; }

.mini-btn {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 4px 8px; border-radius: 7px;
  border: 1px solid transparent; background: transparent;
  font-size: 0.72rem; color: var(--ink-3);
  transition: var(--t);
}
.mini-btn:hover { color: var(--ink); background: var(--accent-soft); border-color: var(--accent-line); }
.mini-btn[aria-pressed="true"] { color: var(--accent-2); }
.mini-btn.is-speaking { color: var(--accent-2); }

/* ---------- empty ---------- */
.empty {
  margin: 56px auto 40px;
  max-width: 420px;
  text-align: center;
  color: var(--ink-2);
}
.empty-mark { font-size: 2.4rem; color: var(--ink-3); display: block; margin-bottom: 8px; }
.empty h3 { font-size: 1.05rem; color: var(--ink); }
.empty p { margin-top: 8px; font-size: 0.86rem; color: var(--ink-3); }
.solid-btn {
  margin-top: 20px;
  padding: 9px 20px; border-radius: 999px;
  border: 0; background: var(--accent); color: var(--bg);
  font-size: 0.84rem; font-weight: 700;
  transition: var(--t);
}
.solid-btn:hover { filter: brightness(1.08); transform: translateY(-1px); }

/* ---------- note ---------- */
.note {
  max-width: var(--maxw);
  margin: 40px auto 0;
  padding: 0 24px 64px;
}
.note-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
  gap: 16px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
}
.note-card h3 {
  font-size: 0.82rem; font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--ink);
}
.note-card h3::before {
  content: ""; display: inline-block;
  width: 5px; height: 5px; margin-right: 8px; border-radius: 50%;
  background: var(--accent); vertical-align: 2px;
}
.note-card p {
  margin-top: 9px;
  font-size: 0.8rem;
  line-height: 1.85;
  color: var(--ink-3);
}
.note-card b { color: var(--ink-2); font-weight: 600; }

/* ---------- foot ---------- */
.foot {
  border-top: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg-elev) 55%, transparent);
}
.foot-in {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 30px 24px calc(34px + env(safe-area-inset-bottom, 0px));
  display: flex; flex-direction: column; gap: 10px;
}
.foot-brand {
  font-family: var(--font-mono);
  font-size: 0.7rem; letter-spacing: 0.2em;
  color: var(--ink-3);
}
.foot-links { display: flex; gap: 18px; flex-wrap: wrap; }
.foot-links a { font-size: 0.8rem; color: var(--ink-2); border-bottom: 1px solid transparent; transition: var(--t); }
.foot-links a:hover { color: var(--accent); border-bottom-color: var(--accent-line); }
.foot-copy { font-size: 0.72rem; color: var(--ink-3); line-height: 1.7; }

/* ---------- drawer ---------- */
.scrim {
  position: fixed; inset: 0; z-index: 90;
  background: var(--scrim);
  -webkit-backdrop-filter: blur(3px);
  backdrop-filter: blur(3px);
  opacity: 0;
  transition: opacity 0.3s ease;
}
.scrim.is-on { opacity: 1; }

.drawer {
  position: fixed; top: 0; right: 0; z-index: 100;
  width: min(600px, 100%);
  height: 100dvh;
  display: flex; flex-direction: column;
  background: var(--bg-elev);
  border-left: 1px solid var(--line);
  box-shadow: -30px 0 80px -30px rgba(0, 0, 0, 0.7);
  transform: translateX(102%);
  transition: transform 0.4s var(--ease);
  padding-top: env(safe-area-inset-top, 0px);
}
.drawer.is-on { transform: translateX(0); }

.drawer-top {
  flex: 0 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--line);
}
.drawer-top-actions { display: flex; gap: 6px; }

.drawer-body {
  flex: 1 1 auto;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 26px 26px 34px;
  scrollbar-width: thin;
}

.d-title {
  font-size: clamp(1.35rem, 2.4vw, 1.7rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.25;
}
.d-title-en {
  display: block;
  margin-top: 6px;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 0.94rem;
  font-weight: 400;
  color: var(--ink-3);
  letter-spacing: 0;
}
.d-sub {
  margin-top: 10px;
  font-size: 0.8rem;
  color: var(--ink-3);
  line-height: 1.7;
}

.d-quote {
  position: relative;
  margin: 22px 0 0;
  padding: 18px 0 18px 18px;
  border-left: 2px solid var(--accent);
  font-family: var(--font-serif);
  font-size: clamp(1.06rem, 1.7vw, 1.2rem);
  line-height: 1.68;
  color: var(--ink);
}
.d-quote.is-long { font-size: clamp(1rem, 1.5vw, 1.1rem); }

.d-zh {
  margin-top: 14px;
  font-size: 0.9rem;
  line-height: 1.9;
  color: var(--ink-2);
}

.d-tools {
  margin-top: 18px;
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
}
.d-tools .ghost-btn { padding: 7px 13px; font-size: 0.78rem; }
.rate-select {
  height: 32px; padding: 0 8px;
  border: 1px solid var(--line); border-radius: 8px;
  background: transparent; color: var(--ink-2);
  font: inherit; font-size: 0.76rem;
}
.rate-select:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.d-sec { margin-top: 30px; }
.d-sec > h4 {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 12px;
}
.d-sec > h4::after {
  content: ""; display: block;
  width: 100%; height: 1px; margin-top: 9px;
  background: var(--line);
}

.d-body-text { font-size: 0.88rem; line-height: 1.9; color: var(--ink-2); }

.d-list { display: flex; flex-direction: column; gap: 10px; }
.d-list li {
  position: relative;
  padding-left: 18px;
  font-size: 0.88rem; line-height: 1.8;
  color: var(--ink-2);
}
.d-list li::before {
  content: ""; position: absolute; left: 2px; top: 0.72em;
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--accent); opacity: 0.8;
}
.d-list.is-more li {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 0.94rem;
  line-height: 1.75;
  color: var(--ink-2);
}
.d-list.is-more li::before { background: var(--accent-2); }

.d-vocab { display: flex; flex-direction: column; gap: 12px; }
.d-vocab-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 3px;
  padding: 11px 13px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: var(--panel);
}
.d-vocab-head { display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.d-vocab-head b { font-family: var(--font-serif); font-size: 1rem; font-weight: 600; }
.d-vocab-head i { font-style: normal; font-family: var(--font-mono); font-size: 0.68rem; color: var(--accent); }
.d-vocab-head span { font-size: 0.8rem; color: var(--ink); }
.d-vocab-note { font-size: 0.78rem; line-height: 1.7; color: var(--ink-3); }

.d-pattern {
  display: block;
  padding: 13px 15px;
  border: 1px dashed var(--accent-line);
  border-radius: var(--r-sm);
  background: var(--accent-soft);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.75;
  color: var(--ink);
  white-space: pre-wrap;
  word-break: break-word;
}

.d-source {
  margin-top: 30px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  display: flex; flex-wrap: wrap; align-items: center; gap: 10px;
  font-size: 0.76rem; color: var(--ink-3);
  line-height: 1.7;
}
.d-source a {
  color: var(--accent);
  border-bottom: 1px solid var(--accent-line);
  padding-bottom: 1px;
}
.d-source a:hover { border-bottom-color: var(--accent); }

.drawer-nav {
  flex: 0 0 auto;
  display: flex; gap: 8px;
  padding: 12px 20px calc(12px + env(safe-area-inset-bottom, 0px));
  border-top: 1px solid var(--line);
  background: var(--bg-elev);
}
.nav-btn {
  flex: 1 1 0;
  min-width: 0;
  padding: 9px 10px;
  border: 1px solid var(--line); border-radius: 9px;
  background: transparent;
  font-size: 0.78rem; color: var(--ink-2);
  white-space: nowrap;
  transition: var(--t);
}
.nav-btn:hover:not(:disabled) { color: var(--ink); border-color: var(--accent-line); background: var(--accent-soft); }
.nav-btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* ---------- toast ---------- */
.toast {
  position: fixed; left: 50%; bottom: 28px; z-index: 140;
  transform: translate(-50%, 16px);
  padding: 9px 18px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: var(--panel-solid);
  color: var(--ink);
  font-size: 0.8rem;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s var(--ease);
}
.toast.is-on { opacity: 1; transform: translate(-50%, 0); }

/* ---------- cloze & recitation mode ---------- */
.cloze-mask {
  display: inline;
  transition: all 0.2s ease;
}
html[data-cloze="on"] .cloze-mask {
  background: var(--accent-soft);
  color: transparent !important;
  text-shadow: none;
  border-radius: 4px;
  padding: 1px 5px;
  margin: 0 1px;
  cursor: pointer;
  user-select: none;
  border-bottom: 2px dashed var(--accent);
}
html[data-cloze="on"] .cloze-mask:hover,
html[data-cloze="on"] .cloze-mask:focus,
html[data-cloze="on"] .cloze-mask.is-revealed {
  color: var(--accent) !important;
  background: rgba(165, 180, 252, 0.24);
  border-bottom-style: solid;
  user-select: auto;
}
html[data-cloze="on"] .card-zh,
html[data-cloze="on"] .d-zh {
  filter: blur(5px);
  cursor: pointer;
  user-select: none;
  transition: filter 0.25s ease;
}
html[data-cloze="on"] .card-zh:hover,
html[data-cloze="on"] .card-zh.is-revealed,
html[data-cloze="on"] .d-zh:hover,
html[data-cloze="on"] .d-zh.is-revealed {
  filter: none;
  user-select: auto;
}

/* ---------- speaking audio wave pulse ---------- */
.is-speaking {
  color: var(--accent) !important;
  border-color: var(--accent-line) !important;
  background: var(--accent-soft) !important;
}
.is-speaking svg {
  animation: audioPulse 1.2s ease-in-out infinite alternate;
}
@keyframes audioPulse {
  0% { transform: scale(0.92); opacity: 0.75; }
  100% { transform: scale(1.18); opacity: 1; }
}

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .hero {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
    padding-top: 44px;
  }
  .hero h1 { font-size: clamp(2rem, 8vw, 2.9rem); }
  .today { order: 2; }
}

@media (max-width: 720px) {
  .topbar-in { padding: 0 16px; gap: 12px; }
  .topnav { display: none; }
  .pill-btn span:not(.dot) { display: none; }
  .pill-btn { padding: 8px; }
  .hero, .library, .note { padding-left: 16px; padding-right: 16px; }
  .lib-head { align-items: stretch; }
  .lib-tools { width: 100%; flex-direction: column; align-items: stretch; }
  .search { min-width: 0; width: 100%; }
  .tabs { width: 100%; justify-content: space-between; }
  .tabs button { flex: 1 1 0; justify-content: center; padding: 7px 8px; }
  .grid { grid-template-columns: minmax(0, 1fr); gap: 14px; }
  .drawer-body { padding: 22px 18px 28px; }
  .drawer-nav { padding-left: 14px; padding-right: 14px; }
  .foot-in { padding-left: 16px; padding-right: 16px; }

  /* 点按目标（2026-10-19）：实测移动端每张卡片上的「朗读 / 复制 / 展开 / 收藏」
     只有 30–34px 高，60 张卡片就是 240 个够不着的按钮。只抬移动端，桌面保持紧凑。 */
  .icon-btn { width: 40px; height: 40px; }
  .pill-btn { min-width: 40px; min-height: 40px; }
  .mini-btn { min-height: 40px; padding: 8px 12px; }
  .tabs button { min-height: 40px; }
  .topic-pill { min-height: 40px; padding: 8px 14px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}

/* ---------- poster modal ---------- */
.poster-scrim {
  position: fixed; inset: 0; z-index: 110;
  background: var(--scrim);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  opacity: 0;
  transition: opacity 0.3s ease;
}
.poster-scrim.is-on { opacity: 1; }

.poster-modal {
  position: fixed;
  top: 50%; left: 50%;
  transform: translate(-50%, -46%) scale(0.96);
  z-index: 120;
  width: min(92vw, 440px);
  max-height: 90vh;
  background: var(--panel-solid);
  border: 1px solid var(--line-strong);
  border-radius: var(--r);
  box-shadow: 0 25px 60px -15px rgba(0, 0, 0, 0.6);
  display: flex; flex-direction: column;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
  transition: transform 0.3s var(--ease), opacity 0.25s ease;
}
.poster-modal.is-on {
  opacity: 1;
  pointer-events: auto;
  transform: translate(-50%, -50%) scale(1);
}
.poster-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
}
.poster-head h3 {
  font-size: 0.92rem; font-weight: 700; color: var(--ink);
  letter-spacing: -0.01em;
}
.poster-preview {
  flex: 1 1 auto;
  overflow-y: auto;
  padding: 16px;
  background: color-mix(in srgb, var(--bg) 70%, transparent);
  display: flex; justify-content: center; align-items: center;
}
#poster-canvas {
  width: 100%;
  max-width: 360px;
  height: auto;
  aspect-ratio: 4 / 5;
  border-radius: 8px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.25);
  display: block;
}
.poster-foot {
  display: flex; gap: 10px;
  padding: 12px 18px;
  border-top: 1px solid var(--line);
  background: var(--bg-elev);
}
.poster-foot button {
  flex: 1 1 0;
  justify-content: center;
  font-size: 0.8rem;
  padding: 8px 12px;
}

/* ---------- audio player hud ---------- */
.player-hud {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  z-index: 95;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--panel-solid);
  border: 1px solid var(--accent-line);
  box-shadow: 0 12px 35px -8px rgba(0, 0, 0, 0.45), 0 0 0 1px var(--line);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  opacity: 0;
  transition: transform 0.35s var(--ease), opacity 0.3s ease;
  max-width: min(92vw, 480px);
  width: max-content;
}
.player-hud.is-active {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}
.hud-soundwave {
  display: flex;
  align-items: center;
  gap: 3px;
  height: 18px;
}
.hud-soundwave i {
  width: 3px;
  height: 6px;
  background: var(--accent);
  border-radius: 2px;
  animation: hudWave 1s ease-in-out infinite alternate;
}
.hud-soundwave i:nth-child(2) { animation-delay: 0.2s; height: 12px; }
.hud-soundwave i:nth-child(3) { animation-delay: 0.4s; height: 16px; }
.hud-soundwave i:nth-child(4) { animation-delay: 0.15s; height: 10px; }
.hud-soundwave i:nth-child(5) { animation-delay: 0.35s; height: 14px; }
.player-hud.is-paused .hud-soundwave i {
  animation-play-state: paused;
  height: 4px !important;
  opacity: 0.5;
}
@keyframes hudWave {
  0% { height: 4px; }
  100% { height: 18px; }
}
.hud-info {
  display: flex;
  flex-direction: column;
  min-width: 0;
  max-width: 220px;
}
.hud-label {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
}
.hud-title {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--ink);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.hud-controls {
  display: flex;
  align-items: center;
  gap: 6px;
}
.hud-controls .icon-btn {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  font-size: 0.85rem;
}
.player-hud .ic-play { display: none; }
.player-hud.is-paused .ic-play { display: block; }
.player-hud.is-paused .ic-pause { display: none; }

/* ---------- vocab popover ---------- */
.vocab-popover {
  position: fixed;
  z-index: 150;
  max-width: 280px;
  padding: 12px 14px;
  border-radius: var(--r-sm);
  background: var(--panel-solid);
  border: 1px solid var(--line-strong);
  box-shadow: 0 14px 35px -8px rgba(0, 0, 0, 0.4);
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--ink-2);
  transform: translate(-50%, -100%) translateY(-10px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
}
.vocab-popover::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -6px;
  transform: translateX(-50%) rotate(45deg);
  width: 10px;
  height: 10px;
  background: var(--panel-solid);
  border-right: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}
.vocab-popover.is-open {
  opacity: 1;
  pointer-events: auto;
  transform: translate(-50%, -100%) translateY(-8px);
}
.vp-head {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-bottom: 4px;
}
.vp-word {
  font-family: var(--font-serif);
  font-size: 0.96rem;
  font-weight: 700;
  color: var(--ink);
}
.vp-pos {
  font-family: var(--font-mono);
  font-style: normal;
  font-size: 0.65rem;
  color: var(--accent);
}
.vp-zh {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--ink-2);
}
.vp-speak {
  margin-left: auto;
  border: 0;
  background: transparent;
  color: var(--ink-3);
  cursor: pointer;
  padding: 2px 4px;
  border-radius: 4px;
  display: inline-flex;
  align-items: center;
  transition: var(--t);
}
.vp-speak:hover {
  color: var(--accent);
  background: var(--accent-soft);
}
.vp-note {
  margin: 0;
  font-size: 0.74rem;
  color: var(--ink-3);
  line-height: 1.55;
}

/* ---------- sentence reading & highlight ---------- */
.read-sentence {
  display: inline;
  padding: 1px 3px;
  margin: 0 -1px;
  border-radius: 4px;
  transition: background-color 0.25s ease, color 0.2s ease;
}
.read-sentence.is-active-sentence {
  background: color-mix(in srgb, var(--accent) 22%, transparent);
  color: var(--ink);
  outline: 1px dashed var(--accent-line);
}
.read-word-match {
  text-decoration: underline 1.5px dotted var(--accent);
  text-underline-offset: 3px;
  cursor: pointer;
}
.read-word-match:hover {
  color: var(--accent);
  text-decoration-style: solid;
}

/* ---------- imitation & practice field in drawer ---------- */
.d-practice-box {
  margin-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.d-practice-input {
  width: 100%;
  min-height: 78px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: var(--panel);
  color: var(--ink);
  font-family: var(--font-serif);
  font-size: 0.88rem;
  line-height: 1.7;
  resize: vertical;
  transition: var(--t);
}
.d-practice-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.d-practice-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.d-practice-actions .ghost-btn {
  padding: 6px 12px;
  font-size: 0.75rem;
}
.d-practice-hint {
  font-size: 0.72rem;
  color: var(--ink-3);
  margin-left: auto;
}

/* 无 JS 时的兜底：卡片区提示 */
html:not(.js) .grid::after {
  content: "这个页面需要 JavaScript 才能载入条目。";
  display: block; padding: 40px 0;
  color: var(--ink-3); font-size: 0.9rem;
}

/* ---------- JS 关闭时的提示（2026-10-18） ----------
   之前只靠「2 秒后网格为空」的脚本兜底，但那段兜底本身也是脚本，
   脚本一关就永远不会触发，用户看到的是一个没有任何说明的空页面。 */
.noscript-note {
  max-width: 720px;
  margin: 40px auto;
  padding: 22px 24px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: 10px;
  background: var(--bg-elev);
  line-height: 1.85;
}
.noscript-note h2 { font-size: 1.05rem; margin: 0 0 8px; }
.noscript-note p { margin: 0; color: var(--ink-2); font-size: 0.92rem; }
.noscript-note a { color: var(--accent); }

/* ---------- 首帧位移预留（2026-10-18） ----------
   网格由 JS 插入 60 张卡片。卡片还没渲染时网格高度是 0，下方的「说明」区块
   会被顶到首屏边缘；卡片一到，整块内容被推走 —— 实测限速 1.2Mbps 下 CLS 0.252。
   先给网格留出大半屏高度，让下方内容从一开始就在折线以下。 */
.grid { min-height: 70vh; }