/* ==========================================================================
   Open VibeKey 落地页样式
   主题：暖色浅底（暖白页面底 + 纯白卡片，靠阴影与描边浮起）+ 系统蓝强调色
   强调色统一为 #0A66D6（浅底下比暗色主题的 #4A9EFF 更深，保证对比度）：
   品牌 CTA 与"锁定=蓝色高亮"的产品视觉规则共用同一套蓝，
   不再区分"品牌色"和"锁定色"两套颜色。
   ========================================================================== */

:root {
  color-scheme: light;

  /* 基础色板（使用者指定） */
  --bg: #FBF8F3;
  --bg-raised: #F5F1EA;
  --bg-card: #FFFFFF;
  --border: #E7E0D5;
  --border-strong: #D6CCBD;

  --text-primary: #1F1B16;
  --text-secondary: #5C554B;
  --text-tertiary: #766D60;

  /* 强调色：系统蓝，全站唯一强调色 */
  --accent: #0A66D6;
  --accent-strong: #084FA8;
  --accent-soft: rgba(10, 102, 214, 0.10);
  --accent-border: rgba(10, 102, 214, 0.35);
  --accent-contrast: #FFFFFF;

  /* 状态色 */
  --success: #047857;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-panel: 16px;

  --shadow-card: 0 1px 2px rgba(31, 27, 22, 0.05), 0 10px 24px rgba(31, 27, 22, 0.07);
  --shadow-panel: 0 24px 60px rgba(31, 27, 22, 0.18), 0 2px 10px rgba(31, 27, 22, 0.08);

  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC",
    "Helvetica Neue", "Segoe UI", Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Menlo", "Consolas", monospace;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
}

body {
  margin: 0;
  min-width: 0;
  overflow-x: hidden;
  background: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

img,
svg {
  display: block;
}

/* [hidden] 的 display:none 来自 UA 样式表，优先级低于上面的 svg{display:block}，
   会被盖掉导致「隐藏」的图标照样显示（锁图标开/闭两态、复制按钮的对勾/复制图标
   都曾因此叠在一起）。这里补回来。 */
img[hidden],
svg[hidden] {
  display: none;
}

a {
  color: inherit;
}

button {
  font: inherit;
  color: inherit;
}

.section-title {
  font-size: clamp(1.5rem, 1.1rem + 1.6vw, 2.1rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 0.5rem;
  text-align: center;
}

.section-sub {
  color: var(--text-secondary);
  text-align: center;
  max-width: 46ch;
  margin: 0 auto 2.5rem;
}

/* ----------------------------- 顶部导航 --------------------------------- */

.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  background: rgba(251, 248, 243, 0.72);
  border-bottom: 1px solid var(--border);
}

.topbar-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0.85rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  min-width: 0;
}

.brand-mark {
  width: 22px;
  height: 22px;
  color: var(--accent);
  flex-shrink: 0;
}

.brand-name {
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.github-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--border-strong);
  border-radius: 50%;
  color: var(--text-secondary);
  transition: background 0.15s ease, color 0.15s ease;
}

.github-link svg {
  width: 20px;
  height: 20px;
}

.github-link:hover {
  color: var(--text-primary);
  background: var(--accent-soft);
}

.lang-switch {
  display: flex;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  padding: 2px;
  gap: 2px;
  flex-shrink: 0;
}

.lang-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 32px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.lang-btn.is-active {
  background: var(--accent);
  color: var(--accent-contrast);
}

.lang-btn:not(.is-active):hover {
  color: var(--text-primary);
  background: rgba(31, 27, 22, 0.05);
}

/* ------------------------------- 通用按钮 -------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.6rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.98rem;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(180deg, var(--accent-strong), var(--accent));
  color: var(--accent-contrast);
  box-shadow: 0 8px 20px rgba(10, 102, 214, 0.28);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 26px rgba(10, 102, 214, 0.35);
}

.btn-primary:active {
  transform: translateY(0);
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.28rem 0.65rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.badge-soon {
  background: var(--accent-soft);
  color: var(--accent-strong);
  border: 1px solid var(--accent-border);
}

/* --------------------------------- Hero ---------------------------------- */

.hero {
  padding: 5.5rem 1.5rem 4.5rem;
  background: radial-gradient(60% 50% at 50% 0%, rgba(10, 102, 214, 0.10), transparent 70%);
}

.hero-inner {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
}

.hero-kicker {
  color: var(--accent-strong);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.03em;
  margin: 0 0 1rem;
  text-transform: uppercase;
}

.hero-title {
  font-size: clamp(1.9rem, 1.3rem + 2.6vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.18;
  margin: 0 0 1.1rem;
}

.hero-sub {
  color: var(--text-secondary);
  font-size: clamp(1rem, 0.94rem + 0.3vw, 1.15rem);
  max-width: 56ch;
  margin: 0 auto 2.2rem;
}

.install-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.6rem;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.98rem;
  white-space: nowrap;
  background: linear-gradient(180deg, var(--accent-strong), var(--accent));
  color: var(--accent-contrast);
  box-shadow: 0 8px 20px rgba(10, 102, 214, 0.28);
}

.hero-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.4rem;
}

.brew-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.6rem 0.7rem;
  max-width: 100%;
}

.brew-label {
  color: var(--text-tertiary);
  font-size: 0.88rem;
}

.brew-box {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-raised);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  padding: 0.45rem 0.5rem 0.45rem 1rem;
  max-width: 100%;
}

.brew-cmd {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-primary);
  white-space: nowrap;
  overflow-x: auto;
  max-width: 46vw;
}

.copy-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-height: 34px;
  padding: 0.4rem 0.9rem 0.4rem 0.75rem;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: rgba(31, 27, 22, 0.035);
  color: var(--text-secondary);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  flex-shrink: 0;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.copy-btn svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.copy-btn:hover {
  color: var(--text-primary);
  border-color: var(--border-strong);
  background: rgba(31, 27, 22, 0.06);
}

.copy-btn.is-copied {
  color: var(--success);
  border-color: rgba(4, 119, 87, 0.5);
  background: rgba(4, 119, 87, 0.12);
}

.copy-feedback {
  position: absolute;
  top: -2.1rem;
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  color: var(--success);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.3rem 0.6rem;
  border-radius: 999px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s ease, transform 0.15s ease;
  white-space: nowrap;
}

.copy-feedback.is-shown {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ------------------------------ 通用 section ------------------------------ */

main section {
  padding: 4.5rem 1.5rem;
}

.demo-inner,
.features-inner,
.steps-inner,
.privacy-inner {
  max-width: 1080px;
  margin: 0 auto;
}

/* --------------------------------- Demo ----------------------------------- */

.demo {
  background: linear-gradient(180deg, transparent, rgba(31, 27, 22, 0.02) 20%, transparent 80%);
}

.panel-stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.menu-panel {
  width: 100%;
  max-width: 340px;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(26px) saturate(180%);
  -webkit-backdrop-filter: blur(26px) saturate(180%);
  border: 1px solid rgba(31, 27, 22, 0.08);
  border-radius: var(--radius-panel);
  box-shadow: var(--shadow-panel);
  padding: 0.6rem;
  font-size: 0.88rem;
  user-select: none;
}

.panel-divider {
  height: 1px;
  background: rgba(31, 27, 22, 0.08);
  margin: 0.45rem 0;
}

.panel-status {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.3rem 0.35rem;
  flex-wrap: wrap;
}

.status-connected {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.82rem;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 0 0 rgba(4, 119, 87, 0.5);
}

@media (prefers-reduced-motion: no-preference) {
  .status-dot {
    animation: pulse-dot 2.2s ease-out infinite;
  }
}

@keyframes pulse-dot {
  0% {
    box-shadow: 0 0 0 0 rgba(4, 119, 87, 0.45);
  }
  70% {
    box-shadow: 0 0 0 6px rgba(4, 119, 87, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(4, 119, 87, 0);
  }
}

.status-battery {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  color: var(--text-secondary);
  font-size: 0.82rem;
}

.icon-bolt {
  width: 13px;
  height: 13px;
  color: var(--text-secondary);
}

.profile-picker {
  position: relative;
  margin-left: auto;
}

.profile-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  min-height: 32px;
  background: rgba(31, 27, 22, 0.045);
  border: 1px solid rgba(31, 27, 22, 0.09);
  border-radius: 999px;
  padding: 0.4rem 0.65rem 0.4rem 0.85rem;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
}

.profile-btn .chevron {
  width: 13px;
  height: 13px;
  color: var(--text-tertiary);
}

.profile-menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  background: rgba(255, 255, 255, 0.98);
  border: 1px solid rgba(31, 27, 22, 0.08);
  border-radius: var(--radius-sm);
  box-shadow: 0 10px 24px rgba(31, 27, 22, 0.16);
  padding: 0.3rem;
  min-width: 110px;
  z-index: 5;
}

.profile-option {
  display: flex;
  align-items: center;
  width: 100%;
  min-height: 32px;
  text-align: left;
  background: transparent;
  border: none;
  color: var(--text-primary);
  padding: 0.5rem 0.65rem;
  border-radius: 6px;
  font-size: 0.8rem;
  cursor: pointer;
}

.profile-option:hover {
  background: var(--accent);
  color: var(--accent-contrast);
}

.panel-section {
  padding: 0.15rem 0.1rem;
}

.panel-section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--text-tertiary);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  padding: 0.3rem 0.35rem 0.5rem;
}

/* 图标类按钮统一遵循"图标小、热区大"：可点区域不小于 32×32，
   图标本身放大到 18px 上下，让人一眼能看出这里能点。 */
.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  border: none;
  background: transparent;
  color: var(--text-tertiary);
  cursor: pointer;
  flex-shrink: 0;
  transition: background 0.15s ease, color 0.15s ease;
}

.icon-btn:hover {
  background: rgba(31, 27, 22, 0.06);
  color: var(--text-primary);
}

.icon-btn svg {
  width: 18px;
  height: 18px;
}

.refresh-btn.is-spinning svg {
  animation: spin 0.6s linear;
}

@media (prefers-reduced-motion: no-preference) {
  .refresh-btn.is-spinning svg {
    animation: spin 0.6s linear;
  }
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

.device-row {
  display: grid;
  grid-template-columns: 30px 1fr auto;
  align-items: center;
  gap: 0.6rem;
  padding: 0.5rem 0.4rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 0.15s ease;
}

.device-row:hover {
  background: rgba(31, 27, 22, 0.04);
}

.device-row.is-locked {
  background: var(--accent-soft);
  border: 1px solid var(--accent-border);
  padding: calc(0.5rem - 1px) calc(0.4rem - 1px);
}

.device-row.is-locked:hover {
  background: var(--accent-soft);
}

.device-icon-wrap {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.device-icon {
  width: 19px;
  height: 19px;
  color: var(--text-tertiary);
  transition: color 0.15s ease;
}

.device-row.is-current .device-icon {
  color: var(--accent);
}

.device-info {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  min-width: 0;
}

.device-name {
  font-size: 0.85rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.device-meta {
  font-size: 0.72rem;
  color: var(--text-tertiary);
}

.lock-btn .lock-icon {
  width: 19px;
  height: 19px;
}

.device-row.is-locked .lock-btn {
  color: var(--accent);
}

.panel-footer-rows {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.panel-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.55rem 0.4rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
}

.panel-static {
  color: var(--text-primary);
  cursor: default;
}

.panel-static:hover {
  background: rgba(31, 27, 22, 0.035);
}

.row-icon {
  width: 16px;
  height: 16px;
  color: var(--text-tertiary);
}

.panel-checkbox {
  cursor: pointer;
}

.panel-checkbox input {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
}

.checkbox-box {
  width: 16px;
  height: 16px;
  border-radius: 5px;
  border: 1.5px solid var(--border-strong);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: transparent;
  flex-shrink: 0;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.checkbox-box svg {
  width: 12px;
  height: 12px;
}

.panel-checkbox input:checked + .checkbox-box {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-contrast);
}

.panel-checkbox input:focus-visible + .checkbox-box,
.device-row:focus-visible,
.icon-btn:focus-visible,
.profile-btn:focus-visible,
.copy-btn:focus-visible,
.btn:focus-visible,
.lang-btn:focus-visible,
.github-link:focus-visible,
.key-select:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.panel-hint {
  color: var(--text-tertiary);
  font-size: 0.8rem;
  text-align: center;
  margin: 1rem auto 0;
  max-width: 640px;
}

/* --------------------------- 主界面模拟：外壳 ------------------------------ */

.screen-mock {
  max-width: 1080px;
  margin: 0 auto;
}

/* 顶部模拟系统菜单栏，右侧是触发迷你面板的 VibeKey 图标 */
.fake-menubar {
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.7rem;
  padding: 0 clamp(1rem, 3vw, 1.5rem);
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-bottom: none;
  border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.fake-menubar-icons {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--text-tertiary);
}

.mb-icon {
  width: 14px;
  height: 14px;
}

.mb-time {
  font-size: 0.72rem;
  font-variant-numeric: tabular-nums;
}

.menubar-trigger {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  border: none;
  background: transparent;
  color: var(--text-primary);
  cursor: pointer;
  transition: background 0.15s ease;
}

.menubar-trigger:hover,
.menubar-trigger[aria-expanded="true"] {
  background: rgba(31, 27, 22, 0.06);
}

.menubar-trigger .brand-mark {
  width: 19px;
  height: 19px;
  color: var(--accent);
}

/* 面板默认收起，图标旁挂一个轻微的脉冲光点，暗示"这里能点"——
   面板一旦展开就隐去，不需要额外文案。 */
.menubar-trigger::after {
  content: "";
  position: absolute;
  top: 3px;
  right: 3px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  pointer-events: none;
}

.menubar-trigger[aria-expanded="true"]::after {
  display: none;
}

@media (prefers-reduced-motion: no-preference) {
  .menubar-trigger::after {
    animation: pulse-trigger 2.4s ease-out infinite;
  }
}

@keyframes pulse-trigger {
  0% {
    box-shadow: 0 0 0 0 rgba(10, 102, 214, 0.5);
  }
  70% {
    box-shadow: 0 0 0 6px rgba(10, 102, 214, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(10, 102, 214, 0);
  }
}

/* 主界面与菜单栏面板的容器：默认上下堆叠（窄屏安全），足够宽时改为并排，
   两者绝不重叠——面板收起时用 flex 自动把整行宽度让给主界面。 */
.screen-body {
  border: 1px solid var(--border);
  border-top: none;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  background: radial-gradient(120% 100% at 50% 0%, rgba(10, 102, 214, 0.06), transparent 60%);
  padding: clamp(0.8rem, 2vw, 1.3rem);
  overflow: visible;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.9rem;
}

@media (min-width: 1100px) {
  /* 到这个宽度，主界面即使让出一条面板宽度也还有足够呼吸空间，
     三栏布局不会被挤出横向滚动——低于此宽度一律堆叠，绝不硬挤。 */
  .screen-body {
    flex-direction: row;
    align-items: flex-start;
  }
}

/* ------------------------------ 主窗口（设置窗） --------------------------- */

.main-window {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  width: 100%;
}

@media (min-width: 1100px) {
  .main-window {
    flex: 1 1 auto;
    min-width: 0;
    width: auto;
  }
}

.mw-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.8rem 1.25rem 0.45rem;
  flex-wrap: wrap;
}

.mw-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.mw-brand .brand-mark {
  width: 20px;
  height: 20px;
  color: var(--accent);
}

.mw-brand-name {
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: -0.005em;
}

.mw-topbar-right {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.mw-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: rgba(31, 27, 22, 0.04);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.3rem 0.65rem;
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--text-primary);
}

.mw-profile-chip .row-icon {
  width: 13px;
  height: 13px;
  color: var(--text-tertiary);
}

.mw-metabar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.45rem;
  padding: 0 1.25rem 0.65rem;
  color: var(--text-tertiary);
  font-size: 0.74rem;
}

.mw-meta-value {
  color: var(--text-secondary);
  margin-left: -0.25rem;
}

.mw-metabar .sep {
  opacity: 0.5;
}

.mw-meta-battery {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  color: var(--text-secondary);
}

.mw-meta-battery .icon-bolt {
  width: 12px;
  height: 12px;
}


.mw-divider {
  height: 1px;
  background: var(--border);
}

.mw-body {
  display: grid;
  /* 中间"快捷键"列用 minmax(0, 1fr)，而不是裸 1fr——网格轨道默认按内容的
     min-content 撑开（等价于 flex 的隐式 min-width:auto），一旦某一行的
     文字/控件比按比例分到的宽度更宽，就会把整张网格撑爆，超出
     .main-window 的 overflow:hidden 边界，表现为右栏「工作」「高」等选项
     被裁掉。minmax(0, 1fr) 让这条轨道可以缩到 0，多出的内容改由行内部
     控件（key-select 的 min-width:0、shortcut-display 的 ellipsis）处理。 */
  grid-template-columns: 136px minmax(0, 1fr) 240px;
  gap: 1.3rem;
  padding: 1.15rem 1.25rem 1.25rem;
}

.mw-shortcuts {
  min-width: 0;
}

.mw-col-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.4rem;
}

.mw-col-head h3,
.mw-col-head h4 {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 700;
}

.mw-col-head-sm h4 {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* "旋钮" 小节标签：图标 + 文字同一行 */
.shortcuts-section-head h4 {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.shortcuts-section-head .section-icon {
  width: 14px;
  height: 14px;
  color: var(--text-tertiary);
  flex-shrink: 0;
}

.mw-col-sub {
  font-size: 0.72rem;
  color: var(--text-tertiary);
  white-space: nowrap;
}

/* 左栏：设备照片（真实透明底照片，用阴影而非方框强调轮廓）
   相对整张「快捷键」卡片垂直居中：.mw-body 是 grid，三栏默认 stretch 到
   等高，这里把 flex 主轴对齐方式从 flex-start 改成 center 即可，
   不用写死的 margin/padding 去顶。 */
.mw-photo {
  display: flex;
  align-items: center;
  justify-content: center;
}

.mw-photo img {
  width: 100%;
  max-width: 118px;
  height: auto;
  max-height: 360px;
  object-fit: contain;
  filter: drop-shadow(0 18px 34px rgba(31, 27, 22, 0.18));
}

/* 中栏：快捷键 */

/* 卡片头：键盘图标 + 「快捷键 · 每键一个 · 离线生效」合并展示在一行 */
.shortcuts-head {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.3rem;
}

.shortcuts-head .shortcuts-icon {
  width: 18px;
  height: 18px;
  color: var(--text-tertiary);
  flex-shrink: 0;
}

.shortcuts-head h3 {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 700;
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.35rem;
  min-width: 0;
}

.mw-demo-hint {
  font-size: 0.74rem;
  color: var(--text-tertiary);
  margin: 0 0 0.5rem;
}

.mw-inner-divider {
  height: 1px;
  background: var(--border);
  margin: 0.55rem 0;
}

/* 快捷键行：每行一张独立圆角子卡片，上行"名称 + 当前快捷键"，
   下行"四个修饰键方块 + 主键弹出框 + 清除按钮"。六行数据都要保留，
   这里只收紧内边距和行间距，不改行数、不改控件热区。 */
.shortcut-list {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.shortcut-row {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.5rem 0.65rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.shortcut-row-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
}

.shortcut-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
}

.shortcut-display {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--accent);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 55%;
}

.shortcut-display.is-empty {
  font-family: var(--font-sans);
  font-weight: 600;
  font-style: italic;
  color: var(--text-tertiary);
}

.shortcut-row-bottom {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.modifier-keys {
  display: flex;
  gap: 0.3rem;
  flex-shrink: 0;
}

/* 修饰键方块：正方、圆角，选中态填充强调色、字符转白 */
.modifier-key {
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  flex-shrink: 0;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.modifier-key:hover {
  border-color: var(--border-strong);
}

.modifier-key.is-active {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-contrast);
}

.shortcut-row.is-cleared .modifier-key {
  opacity: 0.4;
  pointer-events: none;
}

/* 主键弹出框：浅底圆角，右端一个强调色的上下箭头小方块，仿 macOS 弹出按钮。
   实际元素是 <button>，这里把浏览器默认按钮样式清空，视觉上和之前的纯装饰
   <div> 完全一致，只是现在真的可以点开/键盘聚焦。 */
.key-select {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  align-items: stretch;
  height: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  margin: 0;
  padding: 0;
  font: inherit;
  text-align: left;
  color: inherit;
  cursor: pointer;
  transition: border-color 0.15s ease;
}

.key-select:hover {
  border-color: var(--border-strong);
}

.key-select.is-open {
  border-color: var(--accent);
}

.key-select.is-open .key-select-arrow {
  background: var(--accent);
  color: var(--accent-contrast);
}

.key-select-value {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  align-items: center;
  padding: 0 0.6rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.key-select-value.is-empty {
  color: var(--text-tertiary);
  font-style: italic;
  font-weight: 500;
}

.key-select-arrow {
  flex-shrink: 0;
  width: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-soft);
  color: var(--accent);
  border-left: 1px solid var(--border);
}

.key-select-arrow svg {
  width: 12px;
  height: 12px;
}

.clear-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 32px;
  background: none;
  border: none;
  border-radius: 8px;
  color: var(--text-tertiary);
  font-size: 0.76rem;
  font-weight: 600;
  cursor: pointer;
  padding: 0.4rem 0.6rem;
  white-space: nowrap;
  flex-shrink: 0;
}

.clear-btn:hover {
  color: var(--text-primary);
  background: rgba(31, 27, 22, 0.045);
  text-decoration: underline;
}

/* 主键弹出下拉：单例浮层，JS 按当前展开的行动态定位/填充选中态。
   用 position: fixed 而不是相对 .key-select 定位——.main-window 上有
   overflow: hidden（用来裁出圆角），absolute 浮层会被它切掉；fixed 直接
   相对视口摆放，同时也让整份主界面模拟卡片不需要临时改 overflow。 */
.key-popover {
  position: fixed;
  z-index: 80;
  background: rgba(255, 255, 255, 0.99);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-panel);
  padding: 0.35rem;
  overflow: hidden;
}

.key-popover-list {
  max-height: inherit;
  overflow-y: auto;
  outline: none;
}

.key-popover-group + .key-popover-group {
  margin-top: 0.3rem;
  padding-top: 0.35rem;
  border-top: 1px solid var(--border);
}

.key-popover-group-title {
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.6rem 0.2rem;
}

.key-popover-option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
  width: 100%;
  min-height: 32px;
  text-align: left;
  background: transparent;
  border: none;
  border-radius: 6px;
  color: var(--text-primary);
  padding: 0.4rem 0.6rem;
  font-size: 0.82rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
}

.key-popover-option:hover,
.key-popover-option:focus {
  background: var(--accent);
  color: var(--accent-contrast);
}

.key-popover-option:hover .key-popover-check,
.key-popover-option:focus .key-popover-check {
  color: var(--accent-contrast);
}

.key-popover-option:focus-visible {
  outline: 2px solid var(--accent-contrast);
  outline-offset: -3px;
}

.key-popover-check {
  width: 14px;
  height: 14px;
  color: var(--accent);
  flex-shrink: 0;
  opacity: 0;
}

.key-popover-option[aria-selected="true"] .key-popover-check {
  opacity: 1;
}

/* 右栏：灯效 / 麦克风 / 系统麦克风，各自一张卡片 */
.mw-side {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  min-width: 0;
}

.side-panel {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.8rem 0.9rem;
}

.segmented {
  display: flex;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 2px;
  margin: 0.3rem 0 0.55rem;
  transition: opacity 0.15s ease;
}

.segmented-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 32px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.76rem;
  font-weight: 600;
  padding: 0.35rem 0.4rem;
  border-radius: 999px;
  cursor: pointer;
  text-align: center;
  transition: background 0.15s ease, color 0.15s ease;
}

.segmented-btn.is-active {
  background: var(--accent);
  color: var(--accent-contrast);
}

.segmented-btn:not(.is-active):hover {
  background: rgba(31, 27, 22, 0.06);
  color: var(--text-primary);
}

.segmented.is-disabled {
  opacity: 0.45;
  pointer-events: none;
}

.segmented-caption {
  display: block;
  font-size: 0.72rem;
  color: var(--text-tertiary);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

/* 灯效卡第三段：工作模式下各灯单独设置，仅"工作"模式可用，其余整段置灰
   （对应真实 App 的 .disabled(vm.ledMode != 2).opacity(0.45)）。pointer-events:none
   挂在最外层就能一次性挡住四行里所有的分段控件点击，不用逐行单独处理。 */
.led-perkey {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  transition: opacity 0.15s ease;
}

.led-perkey.is-disabled {
  opacity: 0.45;
  pointer-events: none;
}

.led-perkey .segmented-caption {
  margin-bottom: 0.5rem;
}

.led-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.15rem 0;
}

.led-row-label {
  width: 70px;
  flex-shrink: 0;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-secondary);
  white-space: nowrap;
}

.led-row .segmented {
  flex: 1;
  margin: 0;
  min-width: 0;
}

.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.35rem 0;
  font-size: 0.85rem;
  color: var(--text-primary);
}

.switch {
  width: 38px;
  height: 22px;
  border-radius: 999px;
  background: var(--border-strong);
  position: relative;
  border: none;
  cursor: pointer;
  flex-shrink: 0;
  padding: 0;
  transition: background 0.15s ease;
}

.switch::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--text-primary);
  transition: transform 0.15s ease, background 0.15s ease;
}

.switch.is-on {
  background: var(--accent);
}

.switch.is-on::after {
  transform: translateX(16px);
  background: var(--accent-contrast);
}

.slider-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding-top: 0.25rem;
  font-size: 0.82rem;
  color: var(--text-primary);
}

.slider-row > span:first-child {
  flex-shrink: 0;
}

.slider {
  flex: 1;
  accent-color: var(--accent);
  min-width: 0;
}

.slider-value {
  width: 2.4ch;
  text-align: right;
  color: var(--text-secondary);
  font-variant-numeric: tabular-nums;
  font-size: 0.8rem;
  flex-shrink: 0;
}

/* 右栏里"系统麦克风"复用输入设备行组件，行内边距略收紧以适配更窄的列宽 */
.side-panel .device-row {
  grid-template-columns: 26px 1fr auto;
  padding: 0.45rem 0.3rem;
}

.side-panel .device-name {
  font-size: 0.82rem;
}

/* ------------------------- 菜单栏迷你面板：并排/堆叠 ----------------------- */
/* 面板不再覆盖主界面：默认在主界面下方整行堆叠展示（窄屏安全），
   足够宽时（见上面 .screen-body 的 1100px 断点）改为在主界面右侧并排，
   互不重叠。收起时通过 [hidden] 整个移除，主界面自动占满整行。
   注意：这里不能用 filter:drop-shadow 代替阴影——filter 会给这个容器建立
   新的"backdrop 根"，导致里面 .menu-panel 的 backdrop-filter 模糊不到
   真正的页面背景，会看见没被模糊的文字透过来。阴影交给 .menu-panel 自己的
   box-shadow（--shadow-panel）处理。 */
.menu-popover {
  width: 100%;
  max-width: 320px;
}

@media (min-width: 1100px) {
  .menu-popover {
    flex: 0 0 268px;
    width: 268px;
    max-width: 268px;
  }
}

.menu-popover[hidden] {
  display: none;
}

.menu-popover .menu-panel {
  width: 100%;
}

/* ------------------------------- Features -------------------------------- */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.1rem;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.5rem 1.4rem;
  box-shadow: var(--shadow-card);
  transition: transform 0.18s ease, border-color 0.18s ease;
}

@media (prefers-reduced-motion: no-preference) {
  .feature-card:hover {
    transform: translateY(-3px);
    border-color: var(--border-strong);
  }
}

.feature-icon {
  width: 26px;
  height: 26px;
  color: var(--accent);
  margin-bottom: 0.9rem;
}

.feature-card h3 {
  font-size: 1.02rem;
  font-weight: 700;
  margin: 0 0 0.45rem;
  letter-spacing: -0.005em;
}

.feature-card p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.88rem;
  line-height: 1.6;
}

/* --------------------------------- Steps ---------------------------------- */

.step-list {
  list-style: none;
  margin: 0 auto;
  padding: 0;
  max-width: 640px;
  display: flex;
  flex-direction: column;
  gap: 1.6rem;
}

.step-item {
  display: flex;
  gap: 1.1rem;
  align-items: flex-start;
}

.step-num {
  flex-shrink: 0;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--accent-soft);
  border: 1px solid var(--accent-border);
  color: var(--accent-strong);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.95rem;
}

.step-item h3 {
  margin: 0.15rem 0 0.35rem;
  font-size: 1.02rem;
  font-weight: 700;
}

.step-item p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.92rem;
}

/* -------------------------------- Privacy --------------------------------- */

.privacy {
  text-align: center;
}

.privacy-inner {
  max-width: 620px;
}

.privacy-icon {
  width: 34px;
  height: 34px;
  color: var(--accent);
  margin: 0 auto 1rem;
}

.privacy p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin: 0 0 0.9rem;
}

.privacy p:last-child {
  margin-bottom: 0;
}

/* --------------------------------- Footer --------------------------------- */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 2.2rem 1.5rem 2.6rem;
}

.footer-inner {
  max-width: 1080px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.9rem;
  text-align: center;
}

.footer-disclaimer {
  color: var(--text-tertiary);
  font-size: 0.82rem;
  margin: 0;
  max-width: 52ch;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.4rem;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 600;
}

.footer-links a:hover {
  color: var(--text-primary);
}

.footer-copy {
  color: var(--text-tertiary);
  font-size: 0.76rem;
  margin: 0;
}

/* --------------------------------- 响应式 ---------------------------------- */

@media (max-width: 860px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .brew-cmd {
    max-width: 52vw;
  }

  /* 主界面模拟：三栏收成单栏，照片居中缩小 */
  .mw-body {
    grid-template-columns: 1fr;
  }

  .mw-photo {
    padding-top: 0;
  }

  .mw-photo img {
    max-width: 110px;
    max-height: 220px;
  }

  .mw-side {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .side-panel {
    flex: 1 1 220px;
  }
}

@media (max-width: 560px) {
  .topbar-inner {
    flex-wrap: wrap;
  }

  .topbar-actions {
    margin-left: auto;
  }

  .hero {
    padding: 4rem 1.2rem 3.2rem;
  }

  main section {
    padding: 3.2rem 1.2rem;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .brew-row {
    flex-direction: column;
    align-items: stretch;
  }

  .brew-box {
    justify-content: space-between;
  }

  .brew-cmd {
    max-width: 60vw;
  }

  .badge-soon {
    align-self: center;
  }

  .step-item {
    gap: 0.85rem;
  }

  /* 窄屏下菜单栏图标只留触发按钮，其余装饰图标让位给空间 */
  .fake-menubar-icons .mb-icon,
  .fake-menubar-icons .mb-time {
    display: none;
  }

  .mw-topbar {
    padding: 0.9rem 1rem 0.5rem;
  }

  .mw-metabar {
    padding: 0 1rem 0.75rem;
    font-size: 0.7rem;
  }

  .mw-body {
    padding: 1.1rem 1rem 1.25rem;
    gap: 1.2rem;
  }

  .mw-side {
    flex-direction: column;
  }

  .menu-popover {
    width: min(280px, calc(100vw - 2.4rem));
  }
}

/* ------------------------------ 无障碍：减少动效 ---------------------------- */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}