/* ==========================================================================
   广告镜 · 站点样式
   ---------------------------------------------------------------------------
   01 设计变量   02 基础重置   03 通用组件   04 顶部导航   05 首屏
   06 演示区     07 区块通用   08 安装步骤   09 功能       10 价格
   11 常见问题   12 页脚       13 文档页     14 响应式     15 动效偏好
   ========================================================================== */

/* ---------- 01 设计变量 ---------- */

:root {
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  --ease-in-out: cubic-bezier(0.77, 0, 0.175, 1);

  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Noto Sans SC", "Segoe UI", Roboto, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;

  /* 浅色主题（默认） */
  --bg: #f8f7f5;
  --panel: #f1f0ec;
  --surface: #ffffff;
  --fg: #191a1c;
  --sub: #5c6066;
  --faint: #969aa0;
  --line: rgba(0, 0, 0, 0.09);
  --well: #eeedea;

  --accent: #d9482f;        /* 广告 / 主强调 */
  --accent-fg: #c33c25;
  --accent-soft: rgba(217, 72, 47, 0.1);
  --accent-ring: rgba(217, 72, 47, 0.26);

  --ok-fg: #2f7d6b;         /* 非广告 */
  --ok-bg: rgba(47, 125, 107, 0.1);

  --warn-fg: #a4640f;       /* 关键词屏蔽 */
  --warn-bg: rgba(164, 100, 15, 0.11);

  --shadow-sm: 0 0 0 1px rgba(0, 0, 0, 0.05), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow: 0 0 0 1px rgba(0, 0, 0, 0.05), 0 1px 2px rgba(0, 0, 0, 0.04),
    0 10px 28px -10px rgba(0, 0, 0, 0.12);

  color-scheme: light;
}

:root[data-theme="dark"] {
  --bg: #111214;
  --panel: #191a1d;
  --surface: #1f2124;
  --fg: #ecedef;
  --sub: #a3a7ad;
  --faint: #6e727a;
  --line: rgba(255, 255, 255, 0.09);
  --well: #26282c;

  --accent: #ff6a4d;
  --accent-fg: #ff7c62;
  --accent-soft: rgba(255, 106, 77, 0.14);
  --accent-ring: rgba(255, 106, 77, 0.32);

  --ok-fg: #6fc0ab;
  --ok-bg: rgba(111, 192, 171, 0.14);

  --warn-fg: #e0a24a;
  --warn-bg: rgba(224, 162, 74, 0.15);

  --shadow-sm: 0 0 0 1px rgba(255, 255, 255, 0.06);
  --shadow: 0 0 0 1px rgba(255, 255, 255, 0.07), 0 12px 32px -12px rgba(0, 0, 0, 0.7);

  color-scheme: dark;
}

/* ---------- 02 基础重置 ---------- */

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

/* 带 display 的元素也要能被 hidden 属性隐藏 */
[hidden] {
  display: none !important;
}

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

body {
  margin: 0;
  font: 16px/1.7 var(--font);
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
}

img,
svg {
  display: block;
}

h1,
h2,
h3 {
  margin: 0;
  letter-spacing: -0.015em;
  line-height: 1.3;
}

p {
  margin: 0;
  text-wrap: pretty;
}

code {
  font: 0.88em var(--mono);
  padding: 0.15em 0.4em;
  border-radius: 5px;
  background: var(--well);
}

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

.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;
}

.wrap {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- 03 通用组件 ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 22px;
  border: 0;
  border-radius: 999px;
  font: 600 15px/1 var(--font);
  color: var(--bg);
  background: var(--fg);
  text-decoration: none;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: transform 160ms var(--ease-out), opacity 150ms ease,
    background-color 150ms ease;
}

.btn:active {
  transform: scale(0.97);
}

.btn-ghost {
  color: var(--fg);
  background: transparent;
  box-shadow: inset 0 0 0 1px var(--line);
}

.btn-sm {
  height: 34px;
  padding: 0 16px;
  font-size: 14px;
}

.btn-block {
  width: 100%;
  margin-top: 22px;
}

.btn:disabled {
  opacity: 0.45;
  cursor: default;
  transform: none;
}

@media (hover: hover) and (pointer: fine) {
  .btn:not(:disabled):hover {
    opacity: 0.88;
  }
  .btn-ghost:not(:disabled):hover {
    opacity: 1;
    background: var(--well);
  }
}

:where(a, button, summary):focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 6px;
}

.icon-btn {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  color: var(--sub);
  background: transparent;
  cursor: pointer;
  transition: color 150ms ease, background-color 150ms ease,
    transform 160ms var(--ease-out);
}

.icon-btn:active {
  transform: scale(0.94);
}

@media (hover: hover) and (pointer: fine) {
  .icon-btn:hover {
    color: var(--fg);
    background: var(--well);
  }
}

:root[data-theme="dark"] .i-sun,
:root:not([data-theme="dark"]) .i-moon {
  display: none;
}

/* ---------- 04 顶部导航 ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--bg) 84%, transparent);
  -webkit-backdrop-filter: saturate(1.6) blur(14px);
  backdrop-filter: saturate(1.6) blur(14px);
  border-bottom: 1px solid var(--line);
}

.nav-inner {
  display: flex;
  align-items: center;
  gap: 28px;
  height: 62px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 650;
  text-decoration: none;
  letter-spacing: -0.01em;
}

.brand img,
.brand svg {
  border-radius: 7px;
}

.nav-links {
  display: flex;
  gap: 24px;
  margin-left: auto;
  font-size: 14px;
}

.nav-links a {
  color: var(--sub);
  text-decoration: none;
  transition: color 150ms ease;
}

@media (hover: hover) and (pointer: fine) {
  .nav-links a:hover {
    color: var(--fg);
  }
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ---------- 05 首屏 ---------- */

.hero {
  position: relative;
  display: grid;
  grid-template-columns: 1.02fr 1fr;
  gap: 56px;
  align-items: center;
  padding-top: 84px;
  padding-bottom: 92px;
}

.hero::before {
  content: "";
  position: absolute;
  inset: -140px -20% auto -20%;
  height: 520px;
  z-index: -1;
  background: radial-gradient(
    60% 60% at 50% 40%,
    var(--accent-soft),
    transparent 70%
  );
  pointer-events: none;
}

.eyebrow {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent-fg);
  margin-bottom: 16px;
}

h1 {
  font-size: clamp(34px, 4.5vw, 50px);
  line-height: 1.24;
  font-weight: 700;
  letter-spacing: -0.025em;
}

h1 em {
  font-style: normal;
  color: var(--accent-fg);
}

.lede {
  margin-top: 22px;
  max-width: 30em;
  font-size: 17px;
  color: var(--sub);
}

.cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.meta {
  margin-top: 16px;
  font-size: 13px;
  color: var(--faint);
}

/* ---------- 06 演示区 ---------- */

.demo {
  position: relative;
  display: grid;
  gap: 10px;
  padding: 14px;
  border-radius: 22px;
  background: var(--panel);
  box-shadow: inset 0 0 0 1px var(--line), 0 24px 60px -30px rgba(0, 0, 0, 0.28);
}

.demo-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 2px 2px 6px;
}

.demo-bar-title {
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--faint);
}

.seg {
  display: inline-flex;
  gap: 2px;
  padding: 2px;
  border-radius: 999px;
  background: var(--well);
}

.seg-btn {
  height: 24px;
  padding: 0 12px;
  border: 0;
  border-radius: 999px;
  font: 600 12px/1 var(--font);
  color: var(--sub);
  background: none;
  cursor: pointer;
  transition: color 150ms ease, background-color 150ms ease;
}

.seg-btn.is-on {
  color: var(--fg);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

/* 帖子卡片 */
.post {
  position: relative;
  padding: 15px 17px;
  border-radius: 14px;
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  font-size: 14.5px;
  line-height: 1.65;
}

.post > p {
  color: var(--fg);
}

.post-head {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-bottom: 8px;
}

.avatar {
  display: grid;
  place-items: center;
  flex: none;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  font-size: 14px;
  font-weight: 600;
  color: hsl(var(--hue) 45% 36%);
  background: hsl(var(--hue) 55% 91%);
}

:root[data-theme="dark"] .avatar {
  color: hsl(var(--hue) 55% 80%);
  background: hsl(var(--hue) 22% 24%);
}

.post-meta {
  display: grid;
  line-height: 1.35;
}

.post-meta b {
  font-size: 14px;
}

.post-meta span {
  display: flex;
  align-items: center;
  font-size: 12px;
  color: var(--faint);
}

/* 徽标 */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  height: 18px;
  margin-left: 6px;
  padding: 0 7px;
  border: 0;
  border-radius: 999px;
  font: 600 11px/18px var(--font);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  cursor: default;
  transition: transform 160ms var(--ease-out);
}

.badge::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.8;
}

.badge:active {
  transform: scale(0.96);
}

.badge-ok {
  color: var(--ok-fg);
  background: var(--ok-bg);
}

.badge-ad {
  color: var(--accent-fg);
  background: var(--accent-soft);
  box-shadow: inset 0 0 0 1px var(--accent-ring);
}

.badge-kw {
  color: var(--warn-fg);
  background: var(--warn-bg);
}

.badge-loading {
  color: var(--faint);
  background: transparent;
  box-shadow: inset 0 0 0 1px var(--line);
}

.badge-loading::before {
  animation: dot-pulse 1s ease-in-out infinite;
}

@keyframes dot-pulse {
  50% {
    opacity: 0.2;
  }
}

/* 折叠 */
.fold-bar {
  display: none;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 0;
  border: 0;
  font: 13px/20px var(--font);
  text-align: left;
  color: var(--faint);
  background: none;
  cursor: pointer;
}

.fold-bar::before {
  content: "";
  flex: none;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-fg);
  opacity: 0.85;
}

.fold-bar[data-kind="kw"]::before {
  background: var(--warn-fg);
}

.fold-bar span {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.fold-bar b {
  color: var(--fg);
  font-weight: 600;
}

.demo[data-mode="fold"] .post.is-foldable:not(.is-open) {
  padding-top: 12px;
  padding-bottom: 12px;
}

.demo[data-mode="fold"] .post.is-foldable:not(.is-open) > .fold-bar {
  display: flex;
}

.demo[data-mode="fold"] .post.is-foldable:not(.is-open) > :not(.fold-bar) {
  display: none;
}

/* 屏蔽关键词输入行 */
.kw-row {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  font-size: 12.5px;
  color: var(--sub);
}

.kw-field {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  min-width: 136px;
  height: 30px;
  padding: 0 6px;
  border-radius: 9px;
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.kw-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  height: 20px;
  padding: 0 6px 0 9px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  color: var(--warn-fg);
  background: var(--warn-bg);
}

.kw-chip::after {
  content: "×";
  font-weight: 400;
  opacity: 0.6;
}

.kw-typing {
  font-size: 12.5px;
  color: var(--fg);
}

.kw-caret {
  display: none;
  width: 1.5px;
  height: 14px;
  background: var(--accent);
}

.kw-row[data-typing] .kw-caret {
  display: block;
  animation: caret 1s steps(1) infinite;
}

@keyframes caret {
  50% {
    opacity: 0;
  }
}

/* 悬停详情 */
.tip {
  position: absolute;
  z-index: 5;
  width: 212px;
  padding: 12px;
  border-radius: 11px;
  font-size: 12px;
  line-height: 1.5;
  background: var(--surface);
  box-shadow: 0 0 0 1px var(--line), 0 12px 30px -6px rgba(0, 0, 0, 0.2);
  pointer-events: none;
  transform-origin: var(--origin, top left);
  opacity: 0;
  transform: scale(0.97);
  transition: opacity 120ms ease, transform 150ms var(--ease-out);
}

.tip[data-open="true"] {
  opacity: 1;
  transform: none;
}

.tip-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  color: var(--sub);
}

.tip-head strong {
  font-size: 19px;
  font-weight: 650;
  color: var(--fg);
  font-variant-numeric: tabular-nums;
}

.tip[data-ad="true"] .tip-head strong {
  color: var(--accent-fg);
}

.tip-meter {
  height: 4px;
  margin: 8px 0 10px;
  border-radius: 2px;
  background: var(--well);
  overflow: hidden;
}

.tip-meter i {
  display: block;
  height: 100%;
  width: var(--w);
  background: var(--ok-fg);
}

.tip[data-ad="true"] .tip-meter i {
  background: var(--accent-fg);
}

.tip-rows {
  display: grid;
  gap: 4px;
}

.tip-row {
  display: grid;
  grid-template-columns: 42px 1fr 32px;
  gap: 8px;
  align-items: center;
  color: var(--sub);
}

.tip-row i {
  height: 3px;
  border-radius: 2px;
  background: linear-gradient(
    to right,
    currentColor var(--w),
    var(--well) var(--w)
  );
  opacity: 0.6;
}

.tip-row b {
  font-weight: 500;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.tip-row.is-top {
  color: var(--fg);
}

.tip-sub {
  margin: 9px 0 4px;
  color: var(--warn-fg);
  font-weight: 600;
}

.demo-hint {
  margin-top: 2px;
  font-size: 12.5px;
  color: var(--faint);
  text-align: center;
}

.replay {
  padding: 0;
  border: 0;
  font: inherit;
  color: var(--sub);
  background: none;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 3px;
}

@media (hover: hover) and (pointer: fine) {
  .replay:hover {
    color: var(--fg);
  }
}

/* 首访动画开始前先藏起来（class 在渲染前就加在 html 上） */
.play-intro .demo .post,
.play-intro .demo .kw-row,
.play-intro .demo .demo-hint {
  opacity: 0;
}

/* ---------- 07 区块通用 ---------- */

.section {
  padding-top: 88px;
  padding-bottom: 8px;
  scroll-margin-top: 62px;
}

.section-head {
  max-width: 640px;
  margin-bottom: 36px;
}

.section-head h2 {
  font-size: 30px;
  font-weight: 700;
}

.section-head p {
  margin-top: 10px;
  color: var(--sub);
}

/* ---------- 08 安装步骤 ---------- */

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.step {
  padding: 24px;
  border-radius: 16px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.step-no {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  margin-bottom: 16px;
  border-radius: 50%;
  font-size: 14px;
  font-weight: 700;
  color: var(--accent-fg);
  background: var(--accent-soft);
}

.step h3 {
  font-size: 17px;
  margin-bottom: 8px;
}

.step p {
  font-size: 14.5px;
  color: var(--sub);
}

.step p + p {
  margin-top: 10px;
}

.step a {
  color: var(--fg);
  text-underline-offset: 3px;
}

.small {
  font-size: 13px;
}

.copy-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-top: 12px;
  padding: 6px 6px 6px 12px;
  border-radius: 10px;
  background: var(--well);
}

.copy-row code {
  padding: 0;
  background: none;
  font-size: 13.5px;
}

.copy {
  flex: none;
  height: 28px;
  padding: 0 12px;
  border: 0;
  border-radius: 7px;
  font: 600 12.5px/1 var(--font);
  color: var(--fg);
  background: var(--surface);
  box-shadow: 0 0 0 1px var(--line);
  cursor: pointer;
  transition: transform 160ms var(--ease-out), color 150ms ease;
}

.copy:active {
  transform: scale(0.96);
}

.copy[data-done="true"] {
  color: var(--accent-fg);
}

/* ---------- 09 功能 ---------- */

.features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.feature {
  padding: 22px;
  border-radius: 16px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.feature h3 {
  font-size: 16px;
  margin: 14px 0 6px;
}

.feature p {
  font-size: 14px;
  color: var(--sub);
}

.f-icon {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  font-weight: 700;
  color: var(--accent-fg);
  background: var(--accent-soft);
}

.f-icon .dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: currentColor;
}

.f-icon .bar {
  width: 18px;
  height: 3px;
  border-radius: 2px;
  background: currentColor;
  box-shadow: 0 -5px 0 currentColor, 0 5px 0 currentColor;
}

.f-icon .blur {
  width: 18px;
  height: 8px;
  border-radius: 4px;
  background: currentColor;
  filter: blur(2px);
  opacity: 0.8;
}

.note {
  margin-top: 20px;
  font-size: 14px;
  color: var(--faint);
}

/* ---------- 10 价格 ---------- */

.plans {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.plan {
  position: relative;
  padding: 28px;
  border-radius: 18px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.plan-best {
  box-shadow: 0 0 0 1.5px var(--accent-ring),
    0 16px 36px -16px rgba(217, 72, 47, 0.3);
}

.plan-tag {
  position: absolute;
  top: 20px;
  right: 20px;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent-fg);
  background: var(--accent-soft);
}

.plan h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--sub);
}

.price {
  margin-top: 8px;
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -0.025em;
  font-variant-numeric: tabular-nums;
}

.price span {
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0;
  color: var(--faint);
}

.plan ul {
  display: grid;
  gap: 8px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  font-size: 14.5px;
  color: var(--sub);
}

.plan li {
  position: relative;
  padding-left: 22px;
}

.plan li::before {
  content: "✓";
  position: absolute;
  left: 0;
  font-size: 13px;
  font-weight: 700;
  color: var(--accent-fg);
}

.plan li b {
  font-weight: 600;
  color: var(--fg);
}

/* ---------- 11 常见问题 ---------- */

.faq {
  max-width: 760px;
  border-top: 1px solid var(--line);
}

.faq details {
  border-bottom: 1px solid var(--line);
}

.faq summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 18px 2px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary::after {
  content: "+";
  flex: none;
  font-size: 20px;
  font-weight: 400;
  color: var(--faint);
  transition: transform 200ms var(--ease-out);
}

.faq details[open] summary::after {
  transform: rotate(45deg);
}

.faq details p {
  padding: 0 2px 20px;
  font-size: 15px;
  color: var(--sub);
}

.faq a {
  text-underline-offset: 3px;
}

/* ---------- 12 页脚 ---------- */

.footer {
  margin-top: 96px;
  border-top: 1px solid var(--line);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 64px;
  font-size: 13px;
  color: var(--faint);
}

.footer a {
  text-decoration: none;
}

@media (hover: hover) and (pointer: fine) {
  .footer a:hover {
    color: var(--fg);
  }
}

/* ---------- 13 文档页（隐私政策 / 404） ---------- */

.doc {
  padding-top: 64px;
}

.doc h1 {
  font-size: 32px;
}

.doc .updated {
  margin-top: 8px;
  font-size: 14px;
  color: var(--faint);
}

.doc h2 {
  font-size: 19px;
  margin-top: 40px;
  margin-bottom: 10px;
}

.doc p,
.doc li {
  color: var(--sub);
}

.doc ul {
  padding-left: 20px;
}

.doc li + li {
  margin-top: 6px;
}

.doc strong {
  color: var(--fg);
}

.doc .back {
  display: inline-block;
  margin-top: 40px;
  font-size: 14px;
  color: var(--sub);
  text-underline-offset: 3px;
}

/* ---------- 14 响应式 ---------- */

@media (max-width: 960px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 48px;
    padding-top: 52px;
    padding-bottom: 64px;
  }
  .features {
    grid-template-columns: repeat(2, 1fr);
  }
  .steps,
  .plans {
    grid-template-columns: 1fr;
  }
  .plans .plan-best {
    order: -1;
  }
}

@media (max-width: 620px) {
  .wrap {
    padding: 0 16px;
  }
  .nav-links {
    display: none;
  }
  .nav-inner {
    justify-content: space-between;
    gap: 12px;
  }
  .nav-actions {
    margin-left: auto;
  }
  .features {
    grid-template-columns: 1fr;
  }
  .section {
    padding-top: 64px;
  }
  .section-head h2 {
    font-size: 26px;
  }
  .demo {
    padding: 10px;
    border-radius: 18px;
  }
  .tip {
    display: none; /* 触屏上没有悬停 */
  }
  .kw-field {
    min-width: 112px;
  }
}

/* ---------- 15 动效偏好 ---------- */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .btn,
  .copy,
  .badge,
  .icon-btn,
  .seg-btn,
  .tip,
  .faq summary::after {
    transition: none;
  }
  .btn:active,
  .copy:active,
  .badge:active,
  .icon-btn:active {
    transform: none;
  }
  .badge-loading::before,
  .kw-row[data-typing] .kw-caret {
    animation: none;
  }
}