/* style.css — 雅思听写 · 设计层
 * 基座：Pico CSS v2（MIT，assets/vendor/pico.min.css），本文件在其上定义设计令牌与组件。
 * 视觉方向：集群统一语言（参照 portal/index-v2.html）—— 极浅蓝白底、纯白无边框卡片、
 * 极轻投影、产品主题绿 #166534、系统无衬线字栈。字重只用 400 / 600 / 700。
 */

/* ---------------- 设计令牌 ---------------- */
:root {
  --font-ui: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", sans-serif;

  --bg: #f3f7fe;
  --card: #ffffff;
  --card-2: #edf2fa;
  --ink: #182440;
  --ink-2: #3c4a66;
  --muted: #5d6b85;
  --line: #e3eaf4;
  --line-strong: #cdd8e8;
  --accent: #166534;
  --accent-strong: #14532d;
  --accent-soft: #e9f6ec;
  --danger: #b42318;
  --danger-soft: rgba(180, 35, 24, .07);
  --ok-soft: #e9f6ec;
  --note: #8a5a0b;
  --note-soft: rgba(150, 118, 20, .09);
  --radius: 11px;        /* 控件 / 按钮 */
  --radius-lg: 18px;     /* 卡片 */
  --shadow: 0 1px 3px rgba(22, 100, 50, .06);
  --shadow-hover: 0 12px 32px rgba(22, 100, 50, .12);

  /* Pico 主题变量接管 */
  --pico-font-family: var(--font-ui);
  --pico-font-size: 15px;
  --pico-line-height: 1.6;
  --pico-border-radius: var(--radius);
  --pico-primary: var(--accent);
  --pico-primary-background: var(--accent);
  --pico-primary-hover-background: var(--accent-strong);
  --pico-primary-focus: rgba(22, 101, 52, .25);
  --pico-color: var(--ink);
  --pico-background-color: var(--bg);
  --pico-card-background-color: var(--card);
  --pico-muted-color: var(--muted);
  --pico-muted-border-color: var(--line);
  --pico-h1-color: var(--ink);
  --pico-h2-color: var(--ink);
  --pico-h3-color: var(--ink);
  --pico-text-selection-color: rgba(22, 101, 52, .16);
}

html[data-theme="dark"] {
  --bg: #10141c;
  --card: #171c26;
  --card-2: #1f2530;
  --ink: #e6eaf2;
  --ink-2: #b3bccd;
  --muted: #8b96ab;
  --line: #283041;
  --line-strong: #394357;
  --accent: #4aa573;
  --accent-strong: #63bd8c;
  --accent-soft: rgba(74, 165, 115, .15);
  --danger: #e06a5e;
  --danger-soft: rgba(224, 106, 94, .13);
  --ok-soft: rgba(74, 165, 115, .15);
  --note: #cfa64a;
  --note-soft: rgba(207, 166, 74, .13);
  --shadow: 0 1px 3px rgba(0, 0, 0, .3);
  --shadow-hover: 0 12px 32px rgba(0, 0, 0, .4);
  color-scheme: dark;
}

/* ---------------- 基础 ---------------- */
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; background: var(--bg); }
body {
  margin: 0; min-height: 100vh; background: var(--bg); color: var(--ink);
  font-family: var(--font-ui); line-height: 1.6; font-size: 15px;
  -webkit-font-smoothing: antialiased;
  transition: background-color .2s, color .2s;
}
.wrap { max-width: 1060px; margin: 0 auto; padding: 0 20px; }
.hidden { display: none !important; }
.muted { color: var(--muted); }
.error-text { color: var(--danger); }
kbd {
  border: 1px solid var(--line-strong); border-bottom-width: 2px; border-radius: 5px;
  padding: 0 5px; font-family: var(--font-ui); font-size: .78em; color: var(--ink-2);
  background: var(--card);
}
code {
  background: var(--card-2); border-radius: 5px; padding: 0 4px;
  font-size: .88em; color: var(--ink-2);
}
h2 { font-size: 21px; font-weight: 700; letter-spacing: -.01em; }
h3 { font-size: 15px; }
::selection { background: rgba(22, 101, 52, .16); }

button { font-family: inherit; cursor: pointer; }
/* 接管 Pico 的按钮基座：默认“无造型”，由组件类决定外观。
   注意必须用真实选择器（不能用 :where），否则优先级压不过 Pico 的按钮规则，
   其默认 padding 会把小尺寸图标按钮的内容区挤没。 */
button, [type="submit"], [type="reset"], [type="button"], [role="button"] {
  --pico-background-color: transparent;
  --pico-color: var(--ink);
  --pico-border-color: transparent;
  --pico-border-width: 0;
  --pico-font-weight: 600;
  background: none;
  color: var(--ink);
  padding: 0;
  transition: color .15s, background-color .15s, border-color .15s, opacity .15s,
    box-shadow .18s, transform .18s;
}
:where(button, [role="button"]):focus-visible,
input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 2px;
}
input, textarea { caret-color: var(--accent); }

/* 视图切换的进入反馈（唯一的入场动效） */
.view:not(.hidden) { animation: view-in .32s ease; }
@keyframes view-in { from { opacity: 0; transform: translateY(8px); } }

/* ---------------- 图标 ---------------- */
.ico { display: inline-flex; width: 1em; height: 1em; vertical-align: -.12em; }
.ico svg, .btn-ico svg, .fb-ico svg { width: 100%; height: 100%; stroke: currentColor;
  fill: none; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.btn-ico { display: inline-flex; width: 15px; height: 15px; margin-right: 6px;
  vertical-align: -2px; }

/* ---------------- 头部 ---------------- */
.site-header {
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  position: sticky; top: 0; z-index: 10; padding: 0;
}
.header-inner { display: flex; align-items: center; justify-content: space-between;
  min-height: 66px; max-width: 1180px; gap: 12px; }
.brand-cluster { display: flex; align-items: center; gap: 13px; }
.suite-brand {
  position: relative; display: grid; grid-template-columns: repeat(2, 6px); gap: 2px;
  width: 32px; height: 32px; align-content: center; justify-content: center;
  border-radius: 9px; color: var(--card); background: var(--ink); text-decoration: none; flex: none;
}
.suite-brand i { width: 6px; height: 6px; border: 1px solid currentColor; border-radius: 1.5px; }
.suite-brand b { position: absolute; left: 39px; top: 8px; color: var(--ink);
  font-size: 10px; font-weight: 700; letter-spacing: .11em; white-space: nowrap; }
.suite-divider { width: 1px; height: 26px; margin-left: 76px; background: var(--line-strong); }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none;
  color: var(--ink); cursor: pointer; }
.brand-mark { width: 30px; height: 30px; }
.brand-mark .mark-bg { fill: var(--accent); }
.brand-mark .mark-bars { stroke: #fff; stroke-width: 1.8; stroke-linecap: round; fill: none; }
.brand-text { font-size: 18px; font-weight: 700; letter-spacing: -.01em; line-height: 1.15; }
.brand-sub { display: block; font-size: 9px; font-weight: 600;
  letter-spacing: .1em; color: var(--accent); margin-top: 2px; }
.nav { display: flex; gap: 2px; align-items: center; }
.nav-btn {
  border: none; background: none; color: var(--ink-2); font-size: 14px;
  padding: 7px 12px; border-radius: var(--radius);
}
.nav-btn:hover { color: var(--ink); background: var(--card-2); }
.nav-cta { background: var(--accent); color: #fff; margin-left: 6px; }
.nav-cta:hover { background: var(--accent-strong); color: #fff; }
.badge {
  display: inline-block; min-width: 17px; text-align: center; background: var(--danger);
  color: #fff; border-radius: 9px; font-size: 11px; line-height: 17px;
  padding: 0 5px; margin-left: 5px;
}
.icon-btn {
  width: 36px; height: 36px; border-radius: var(--radius); border: 1px solid var(--line-strong);
  background: var(--card); color: var(--ink-2); display: inline-flex; align-items: center;
  justify-content: center; margin-left: 8px; flex-shrink: 0;
}
.icon-btn:hover { border-color: var(--accent); color: var(--accent); }
.icon-btn svg {
  width: 17px; height: 17px; fill: none; stroke: currentColor; stroke-width: 1.7;
  stroke-linecap: round; stroke-linejoin: round;
}

/* ---------------- 通用组件 ---------------- */
main.wrap { max-width: 1180px; padding-top: 26px; padding-bottom: 70px; }
.page-tip { color: var(--ink-2); margin: 0 0 4px; font-size: 14px; }
.group-title {
  font-size: 12.5px; font-weight: 700; letter-spacing: .08em; color: var(--muted);
  margin: 30px 0 12px; text-transform: uppercase;
}
.group-note { font-weight: 400; letter-spacing: .04em; margin-left: 8px;
  text-transform: none; }
.panel-title { font-size: 14px; font-weight: 700; margin: 0 0 12px; }
.panel-note { color: var(--muted); font-weight: 400; font-size: 12.5px; margin-left: 8px; }

.primary-btn, .ghost-btn {
  border-radius: var(--radius); padding: 9px 18px; font-size: 14px; font-weight: 600;
  display: inline-flex; align-items: center; justify-content: center; gap: 2px;
}
.primary-btn { background: var(--accent); color: #fff; border: 1px solid var(--accent); }
/* 暗色 accent 较亮，白字对比度不足；改深色字，与集群暗色按钮写法一致 */
html[data-theme="dark"] .primary-btn { color: #101211; }
.primary-btn:hover { background: var(--accent-strong); border-color: var(--accent-strong); }
.primary-btn:disabled { opacity: .4; cursor: not-allowed; }
.ghost-btn { background: var(--card); border: 1px solid var(--line-strong); color: var(--ink); }
.ghost-btn:hover { border-color: var(--accent); color: var(--accent); }
.ghost-btn.danger { color: var(--danger); border-color: var(--danger); }
.ghost-btn.danger:hover { color: var(--danger); border-color: var(--danger); background: var(--danger-soft); }
.link-btn {
  background: none; border: none; color: var(--accent); font-size: 14px; font-weight: 600;
  padding: 3px 5px; border-radius: 5px;
}
.link-btn:hover { text-decoration: underline; }
.link-btn.danger { color: var(--danger); }
.back-btn { display: inline-flex; align-items: center; gap: 4px; color: var(--ink-2); }
.back-btn:hover { color: var(--ink); text-decoration: none; }

/* ---------------- 词库卡片 ---------------- */
.lib-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 14px;
}
.lib-card {
  position: relative; background: var(--card); border: none;
  border-radius: var(--radius-lg); padding: 18px 20px 16px; cursor: pointer;
  box-shadow: var(--shadow);
  transition: transform .18s, box-shadow .18s;
}
.lib-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); }
.lib-card:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.lib-card h3 { margin: 0 0 3px; font-size: 16px; font-weight: 700; }
.lib-desc { margin: 0 0 10px; color: var(--ink-2); font-size: 13px; min-height: 20px; }
.lib-meta { margin: 0; color: var(--muted); font-size: 12px; }
.lib-prog { margin-top: 7px; font-size: 12.5px; color: var(--accent); }
.lib-prog.muted { color: var(--muted); }
.lib-tag {
  position: absolute; top: 14px; right: 42px;
  background: var(--accent-soft); color: var(--accent);
  font-size: 11px; font-weight: 600; border-radius: 999px; padding: 1px 9px;
}
.lib-del {
  position: absolute; top: 8px; right: 8px; border: none; background: none;
  color: var(--muted); width: 24px; height: 24px; border-radius: 6px;
  display: inline-flex; align-items: center; justify-content: center;
}
.lib-del:hover { color: var(--danger); background: var(--danger-soft); }
.lib-del .ico { width: 13px; height: 13px; }

/* ---------------- 配置页 ---------------- */
.setup-title { margin: 14px 0 2px; font-size: 28px; font-weight: 700; letter-spacing: -.02em; }
.setup-desc { color: var(--muted); font-size: 13px; margin: 0 0 18px; }
.setup-cols { display: grid; grid-template-columns: 1.15fr 1fr; gap: 18px; align-items: start; }
@media (max-width: 820px) { .setup-cols { grid-template-columns: 1fr; } }
.setup-sections, .setup-settings {
  background: var(--card); border: none;
  border-radius: var(--radius-lg); padding: 20px; box-shadow: var(--shadow);
}
.sec-row { display: flex; align-items: center; justify-content: space-between;
  border-bottom: 1px solid var(--line); padding: 8px 0; }
.sec-row:last-of-type { border-bottom: none; }
.sec-label { display: flex; align-items: center; gap: 9px; cursor: pointer; flex: 1;
  font-size: 14px; }
.sec-count { color: var(--muted); font-size: 12px; }
.sec-prog { color: var(--accent); font-size: 12px; }
.sec-words { padding: 6px 0 6px 26px; }
.sec-words .word-table { max-height: 280px; overflow: auto; display: block; }

.set-row { display: flex; align-items: center; gap: 10px; margin: 13px 0; flex-wrap: wrap; }
.set-row > label { width: 60px; color: var(--ink-2); font-size: 13.5px; flex-shrink: 0; }
.set-note { color: var(--muted); font-size: 12.5px; }
.set-note-block { flex-basis: 100%; margin-left: 70px; }
.seg { display: inline-flex; gap: 2px; background: var(--card-2);
  border-radius: 12px; padding: 3px; }
.seg button {
  border: none; background: none; padding: 6px 13px; font-size: 13px;
  color: var(--ink-2); border-radius: 9px;
}
.seg button:hover { color: var(--ink); }
.seg button.on { background: var(--card); color: var(--accent); font-weight: 600;
  box-shadow: var(--shadow); }
#set-pick {
  width: 110px; padding: 7px 10px; border: 1px solid var(--line-strong);
  border-radius: var(--radius); font-size: 14px; background: var(--card); color: var(--ink);
}
#set-pick:focus { border-color: var(--accent); outline: none;
  box-shadow: 0 0 0 3px rgba(22, 101, 52, .13); }
.set-switches { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 14px;
  margin: 18px 0; }
.switch { display: flex; align-items: center; gap: 8px; font-size: 13.5px;
  color: var(--ink-2); cursor: pointer; }
.switch input { accent-color: var(--accent); width: 15px; height: 15px; margin: 0; }
/* 配置页底部的全局设置摘要行 */
.prefs-summary {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  border-top: 1px solid var(--line); margin: 18px 0 14px; padding-top: 13px;
  color: var(--muted); font-size: 12.5px; line-height: 1.7;
}
.prefs-summary #setup-prefs-line { flex: 1; min-width: 180px; }

/* ---------------- 设置弹窗 ---------------- */
/* Pico 把 dialog 做成全屏遮罩层（min-width/height:100%），卡片造型交给内部 form；
   此处把 dialog 还原为透明全屏 flex 容器，卡片样式集中在 .prefs-form 上 */
.prefs-dlg {
  min-width: 0; min-height: 0; border: none; padding: 0;
  background: transparent; color: var(--ink);
  width: min(560px, calc(100vw - 32px)); max-height: min(86vh, 720px);
}
.prefs-dlg::backdrop { background: rgba(16, 24, 40, .42); }
.prefs-form { padding: 20px 24px 22px; overflow: auto; max-height: inherit; width: 100%;
  background: var(--card); border-radius: 20px;
  box-shadow: 0 24px 60px rgba(16, 24, 40, .25); }
/* showModal 后焦点落在 form 上，UA 焦点环会描住整个卡片，这里不需要 */
.prefs-form:focus { outline: none; }
/* Pico 会给 form 内的表单元素加 margin-bottom，这里的 seg/开关不需要 */
.prefs-form button, .prefs-form input, .prefs-form label { margin-bottom: 0; }
.prefs-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.prefs-head h2 { margin: 0; font-weight: 700; font-size: 22px; letter-spacing: -.01em; }
.prefs-tip { color: var(--muted); font-size: 12.5px; margin: 6px 0 16px; line-height: 1.65; }
.prefs-dlg .set-row > label { width: 68px; }
.prefs-dlg .set-note-block { margin-left: 78px; }
.prefs-actions {
  display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap;
  border-top: 1px solid var(--line); margin-top: 18px; padding-top: 16px;
}
.prefs-actions .primary-btn { min-width: 120px; }

.big-start {
  width: 100%; background: var(--accent); color: #fff; border: 1px solid var(--accent);
  border-radius: 12px; padding: 13px; font-size: 15.5px; font-weight: 600;
}
.big-start:hover { background: var(--accent-strong); border-color: var(--accent-strong); }

/* ---------------- 听写页 ---------------- */
.d-top { display: flex; align-items: center; gap: 16px; margin-bottom: 10px; }
.d-progress { flex: 1; height: 4px; background: var(--line); border-radius: 4px;
  overflow: hidden; }
#d-progressbar { height: 100%; width: 0; background: var(--accent); border-radius: 4px;
  transition: width .25s; }
.d-counter { color: var(--ink-2); font-variant-numeric: tabular-nums; font-size: 13px; }
.pass-notice {
  border: none; color: var(--note); background: var(--note-soft);
  border-radius: var(--radius); padding: 9px 16px; margin: 8px 0; text-align: center;
  font-size: 13.5px;
}
.d-main {
  background: var(--card); border: none; border-radius: 20px;
  box-shadow: var(--shadow); padding: 44px 30px 30px; text-align: center;
  max-width: 660px; margin: 20px auto 0;
}
.d-prompt { min-height: 36px; font-size: 19px; margin-bottom: 8px; }
.recite-t { color: var(--accent); font-weight: 600; }
.hint-t { color: var(--ink-2); letter-spacing: 2px; font-weight: 600; }
.play-btn {
  width: 72px; height: 72px; border-radius: 50%; border: none;
  background: var(--accent-soft); color: var(--accent); margin: 6px auto 4px;
  display: flex; align-items: center; justify-content: center;
  transition: background-color .15s, color .15s, transform .1s;
}
.play-btn:hover { background: var(--accent); color: #fff; transform: scale(1.03); }
.play-btn:active { transform: scale(.98); }
.play-btn .ico { width: 26px; height: 26px; }
.play-btn.playing { background: var(--accent); color: #fff;
  animation: breathe 1.4s ease-in-out infinite; }
@keyframes breathe { 50% { opacity: .72; } }
.channel-note { min-height: 20px; font-size: 12.5px; color: var(--note); }
.d-input {
  width: 100%; max-width: 430px; margin: 12px auto 0; display: block;
  font-size: 26px; font-weight: 600; padding: 10px 16px; text-align: center;
  border: 1px solid var(--line-strong); border-radius: 12px;
  background: var(--bg); color: var(--ink); outline: none;
  transition: border-color .15s, background-color .15s, box-shadow .15s;
}
.d-input:focus { border-color: var(--accent); background: var(--card);
  box-shadow: 0 0 0 3px rgba(22, 101, 52, .13); }
.d-input::placeholder { color: var(--muted); font-weight: 400; font-size: 14px; }
/* 分组模式提交回执：中性一闪，不透露对错 */
.d-input.logged { animation: logged .32s ease-out; }
@keyframes logged { 0% { background: var(--card-2); } 100% { background: var(--card); } }
.d-actions { display: flex; gap: 10px; justify-content: center; margin-top: 20px;
  flex-wrap: wrap; }
.d-feedback {
  margin: 24px auto 0; max-width: 510px; border-radius: var(--radius);
  text-align: left; font-size: 14.5px; max-height: 0; overflow: hidden;
  transition: max-height .2s, padding .2s; border-left: 3px solid transparent;
}
.d-feedback.show { max-height: 320px; padding: 14px 18px; }
.d-feedback.ok { background: var(--ok-soft); border-left-color: var(--accent); }
.d-feedback.bad { background: var(--danger-soft); border-left-color: var(--danger); }
.fb-line { margin: 4px 0; display: flex; align-items: baseline; gap: 7px; flex-wrap: wrap; }
.fb-line .fb-word { font-size: 21px; font-weight: 700; letter-spacing: -.01em; }
.fb-line.yours s { color: var(--danger); }
.fb-ico { display: inline-flex; width: 15px; height: 15px; align-self: center; }
.fb-ico.ok { color: var(--accent); }
.fb-ico.bad { color: var(--danger); }
.phon { color: var(--ink-2); font-size: 15px; }
.trans { color: var(--ink-2); }
/* ---------------- 分组听写：组末讲评 ---------------- */
.group-review {
  background: var(--card); border: none; border-radius: var(--radius-lg);
  box-shadow: var(--shadow); padding: 20px 22px 22px;
  max-width: 760px; margin: 20px auto 0;
}
.gr-head { display: flex; align-items: baseline; justify-content: space-between;
  gap: 12px; flex-wrap: wrap; margin-bottom: 12px; }
.gr-title { margin: 0; font-weight: 700; font-size: 21px; letter-spacing: -.01em; }
.gr-stat { color: var(--ink-2); font-size: 13.5px; }
.gr-stat b { color: var(--accent); font-size: 15px; }
/* 滚动放在外层容器上，表格本身保持 table 布局，才能撑满面板宽度 */
#gr-list { max-height: 46vh; overflow: auto; }
#gr-list th { position: sticky; top: 0; background: var(--card); z-index: 1; }
.group-review .word-table td:first-child { width: 22px; padding-right: 0; }
.group-review .word-table .fb-ico { position: relative; top: 2px; }
tr.gr-bad td { background: var(--danger-soft); }
tr.gr-bad s { color: var(--danger); }
.gr-actions { display: flex; justify-content: center; margin-top: 18px; }
.gr-actions .primary-btn { min-width: 190px; }

.d-foot { text-align: center; color: var(--muted); font-size: 13px; margin-top: 18px; }
.d-foot b { color: var(--accent); font-size: 15px; }
.d-crumb::before { content: "·"; margin: 0 8px; color: var(--line-strong); }

/* ---------------- 总结 / 统计卡片 ---------------- */
.summary-title { text-align: center; font-weight: 700; font-size: 26px; letter-spacing: -.02em; }
.summary-cards {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 14px; margin: 18px 0 28px;
}
.sum-card {
  background: var(--card); border: none; border-radius: 16px;
  text-align: center; padding: 18px 10px 14px; box-shadow: var(--shadow);
}
.sum-num { font-size: 30px; font-weight: 700; letter-spacing: -.02em;
  color: var(--accent); line-height: 1.15; }
.sum-label { color: var(--muted); font-size: 12px; margin-top: 3px; }
.summary-actions { display: flex; gap: 10px; justify-content: center; margin-top: 24px;
  flex-wrap: wrap; }

/* ---------------- 表格 ---------------- */
.word-table { width: 100%; border-collapse: collapse; background: var(--card);
  font-size: 14px; }
.word-table th, .word-table td {
  text-align: left; padding: 8px 12px; border-bottom: 1px solid var(--line);
  vertical-align: top;
}
.word-table th {
  color: var(--muted); font-weight: 600; font-size: 11.5px; letter-spacing: .08em;
  text-transform: uppercase; border-bottom-color: var(--line-strong);
}
.word-table tr:last-child td { border-bottom: none; }
.word-table b { font-weight: 600; font-size: 15.5px; }
.mini-play {
  border: none; background: none; color: var(--ink-2); padding: 3px 5px;
  border-radius: 6px; display: inline-flex; align-items: center;
}
.mini-play:hover { color: var(--accent); background: var(--accent-soft); }
.mini-play .ico { width: 15px; height: 15px; }

/* ---------------- 错词本 ---------------- */
.wb-head { display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 6px; }
.wb-actions { display: flex; gap: 10px; }
.wb-group {
  background: var(--card); border: none; border-radius: var(--radius-lg);
  margin-bottom: 16px; padding: 8px 16px 14px; box-shadow: var(--shadow);
}
.wb-group-head { display: flex; align-items: center; justify-content: space-between;
  gap: 10px; flex-wrap: wrap; }
.wb-group-head h3 { margin: 10px 0; }
.wb-group-head > div { display: flex; gap: 8px; }
.wb-group .ghost-btn { padding: 6px 12px; font-size: 13px; }

/* ---------------- 导入 ---------------- */
.import-help {
  border: none; border-left: 3px solid var(--accent);
  background: var(--card); color: var(--ink-2); box-shadow: var(--shadow);
  border-radius: var(--radius); padding: 13px 16px; font-size: 13.5px; margin-bottom: 16px;
}
.import-form { display: flex; flex-direction: column; gap: 12px; }
#imp-name {
  padding: 10px 14px; border: 1px solid var(--line-strong); border-radius: var(--radius);
  font-size: 14.5px; background: var(--card); color: var(--ink);
}
#imp-name:focus { border-color: var(--accent); outline: none;
  box-shadow: 0 0 0 3px rgba(22, 101, 52, .13); }
#imp-text {
  width: 100%; border: 1px solid var(--line-strong); border-radius: var(--radius);
  padding: 12px 14px; font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 13px; resize: vertical; background: var(--card); color: var(--ink);
  line-height: 1.7;
}
#imp-text:focus { border-color: var(--accent); outline: none;
  box-shadow: 0 0 0 3px rgba(22, 101, 52, .13); }
.import-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.import-progress { color: var(--ink-2); font-size: 13.5px; min-height: 22px; }
.file-label { display: inline-flex; align-items: center; cursor: pointer; }
input[type="file"]::file-selector-button {
  border: 1px solid var(--line-strong); background: var(--card); color: var(--ink);
  border-radius: var(--radius); padding: 7px 14px; font-size: 13px; cursor: pointer;
  margin-right: 10px;
}

/* ---------------- 统计 ---------------- */
.stats-backup { display: flex; gap: 10px; flex-wrap: wrap; }

/* ---------------- 响应式 ---------------- */
@media (max-width: 640px) {
  .header-inner { padding: 8px 0; flex-wrap: wrap; min-height: 60px; }
  .suite-brand b, .suite-divider { display: none; }
  .brand-cluster { gap: 9px; }
  .brand-text { font-size: 16px; }
  .brand-sub { max-width: 170px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
  .d-main { padding: 28px 16px 22px; }
  .d-input { font-size: 22px; }
  .set-switches { grid-template-columns: 1fr; }
  .nav-btn { padding: 6px 9px; font-size: 13.5px; }
}

/* ---------------- 错词本：毕业进度 / 窄屏表格 ---------------- */
.wb-graduated { color: var(--ink-2); font-size: 13.5px; margin: 0 0 12px; }
.wb-graduated b { color: var(--accent); }
.wb-streak { color: var(--ink-2); font-size: 13px; white-space: nowrap; }
/* 表格在窄屏各自横向滚动，页面本身不横滚 —— 以前错词本的「移除」按钮会被卡片裁掉点不到 */
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.table-scroll .word-table { min-width: 520px; }

/* ---------------- 账号与同步 ---------------- */
.acct-box { border: none; border-radius: 16px;
  padding: 14px 16px; margin: 4px 0 18px; background: var(--card-2); }
.acct-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.acct-head h3 { margin: 0 0 6px; }
.acct-status { font-size: 12.5px; color: var(--muted); }
.acct-status.ok { color: var(--accent); }
.acct-status.bad { color: var(--danger); }
.acct-form { display: flex; gap: 8px; margin: 10px 0; flex-wrap: wrap; }
.acct-form input { flex: 1 1 200px; padding: 8px 12px; font-size: 16px;
  border: 1px solid var(--line-strong); border-radius: var(--radius);
  background: var(--card); color: var(--ink); }
.acct-form input:focus { border-color: var(--accent); outline: none;
  box-shadow: 0 0 0 3px rgba(22, 101, 52, .13); }
.acct-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.acct-actions .primary-btn, .acct-actions .ghost-btn { padding: 7px 14px; font-size: 13.5px; }
.acct-msg { min-height: 18px; margin: 8px 0 0; font-size: 13px; color: var(--danger); }
.acct-msg.ok { color: var(--accent); }
.acct-who { margin: 8px 0 10px; font-size: 14px; }

/* ---------------- 介绍页（未登录） ---------------- */
.lp-hero { text-align: center; padding: 76px 0 16px; max-width: 820px; margin: 0 auto; }
.lp-eyebrow { display: flex; align-items: center; justify-content: center; gap: 9px;
  margin: 0 0 20px; color: var(--accent); font-size: 11px; font-weight: 700;
  letter-spacing: .13em; }
.lp-title { font-size: clamp(38px, 5.4vw, 56px); font-weight: 700;
  line-height: 1.15; margin: 0 0 14px; letter-spacing: -.03em; }
.lp-sub { max-width: 700px; margin: 22px auto 0; color: var(--muted);
  font-size: 15px; line-height: 1.8; }
.lp-account-note { display: inline-block; margin: 22px 0 0; padding: 7px 12px;
  border: none; border-radius: 9px; background: var(--card-2);
  color: var(--ink-2); font-size: 11px; }
.lp-metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px;
  max-width: 820px; margin: 25px auto 18px; }
.lp-metrics div { padding: 17px 19px; border: none; border-radius: 16px;
  background: var(--card); box-shadow: var(--shadow); }
.lp-metrics strong { display: block; color: var(--ink); font-size: 21px; font-weight: 700;
  letter-spacing: -.02em; }
.lp-metrics span { display: block; margin-top: 2px; color: var(--muted); font-size: 11px; }
.lp-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px;
  margin: 34px 0 54px; }
.lp-card { background: var(--card); border: none; border-radius: var(--radius-lg);
  padding: 23px; box-shadow: var(--shadow); min-height: 190px;
  transition: transform .18s, box-shadow .18s; }
.lp-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }
.lp-card h3 { margin: 0 0 12px; font-size: 15px; font-weight: 700; }
.lp-card p { margin: 0; color: var(--muted); font-size: 12.5px; line-height: 1.7; }
.lp-card code { font-size: .92em; }

.lp-auth { max-width: 760px; margin: 0 auto 60px; background: var(--card);
  border: none; border-radius: 22px; padding: 36px; text-align: center;
  box-shadow: var(--shadow); }
.lp-auth h2 { margin: 0 0 6px; font-size: 24px; letter-spacing: -.02em; }
.lp-auth-tip { color: var(--muted); font-size: 13px; margin: 0 0 18px; }
.lp-form { display: flex; flex-direction: column; gap: 10px;
  max-width: 470px; margin: 22px auto 15px; }
.lp-form input { padding: 11px 14px; font-size: 16px; /* ≥16px 免 iOS 聚焦缩放 */
  border: 1px solid var(--line-strong); border-radius: var(--radius);
  background: var(--bg); color: var(--ink); text-align: center; }
.lp-form input:focus { border-color: var(--accent); background: var(--card); outline: none;
  box-shadow: 0 0 0 3px rgba(22, 101, 52, .13); }
.lp-actions { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }
.lp-actions .primary-btn { min-width: 120px; }
.lp-msg { min-height: 20px; margin: 12px 0 0; font-size: 13.5px; color: var(--danger); }
.lp-msg.ok { color: var(--accent); }
.legal-consent { display: flex; align-items: flex-start; gap: 8px; max-width: 520px;
  margin: 0 auto 15px; color: var(--muted); font-size: 12px; line-height: 1.65;
  text-align: left; }
.legal-consent input { width: 15px; height: 15px; margin: 2px 0 0; flex: none;
  accent-color: var(--accent); }
.legal-consent a { color: var(--accent); text-decoration: none; }
.legal-consent a:hover { text-decoration: underline; }
.legal-consent-compact { margin: 10px 0 2px; }
.product-legal-footer { max-width: 1180px; margin: 10px auto 0; padding: 20px 24px 30px;
  color: var(--muted); font-size: 11px; line-height: 1.7; }
.product-legal-footer p { margin: 0 0 5px; }
.product-legal-footer nav { display: flex; flex-wrap: wrap; gap: 6px 15px;
  justify-content: flex-start; }
.product-legal-footer a { color: var(--ink-2); text-decoration: none; }
.product-legal-footer a:hover { color: var(--accent); }

@media (max-width: 850px) { .lp-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) {
  .lp-hero { padding: 48px 0 10px; }
  .lp-title { font-size: 34px; }
  .lp-metrics, .lp-grid { grid-template-columns: 1fr; }
  .lp-metrics div { display: flex; justify-content: space-between; align-items: center; }
  .lp-metrics span { margin: 0; }
  .lp-grid { margin-top: 24px; }
  .lp-card { min-height: 0; }
  .lp-auth { padding: 26px 18px; }
}
.import-help-sub { margin-top: 10px; padding-top: 10px; border-top: 1px solid var(--line); }
.import-help .link-btn { margin-right: 12px; }

/* ---------------- 终身词库：三态徽标 ---------------- */
.tri { font-size: 11.5px; font-weight: 600; padding: 1px 8px; border-radius: 999px;
  margin-left: 6px; white-space: nowrap; }
.tri-mastered { color: var(--accent); background: var(--accent-soft); }
.tri-due { color: var(--danger); background: var(--danger-soft); }

/* ---------------- 书架：兑换码 / 空态 ---------------- */
.redeem-bar { background: var(--card); border: none;
  border-radius: var(--radius-lg); padding: 14px 16px 10px; margin-bottom: 8px;
  box-shadow: var(--shadow); }
.redeem-row { display: flex; gap: 10px; flex-wrap: wrap; }
.redeem-row input { flex: 1 1 320px; padding: 10px 14px; font-size: 16px;
  border: 1px solid var(--line-strong); border-radius: var(--radius);
  background: var(--bg); color: var(--ink); font-family: var(--font-ui); }
.redeem-row input:focus { border-color: var(--accent); background: var(--card);
  outline: none; box-shadow: 0 0 0 3px rgba(22, 101, 52, .13); }
.redeem-msg { min-height: 20px; margin: 8px 0 0; font-size: 13.5px; color: var(--danger); }
.redeem-msg.ok { color: var(--accent); }
.shelf-empty { text-align: center; padding: 46px 20px 40px; max-width: 520px; margin: 0 auto; }
.shelf-empty h2 { font-weight: 700; font-size: 25px; letter-spacing: -.02em;
  margin: 0 0 12px; }
.shelf-empty p { color: var(--ink-2); font-size: 14.5px; margin: 0 0 8px; }

/* ---------------- 动效兜底 ---------------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .view:not(.hidden) { animation: none; }
}