/* ============================================================
 * FA Technology — 官网首页样式
 * 设计基调：极简 / 白底黑字 / 大留白 / 柔和光晕点睛
 *
 * 关键动画参数（统一在此说明）：
 *  - Hero 入场：fadeUp 700ms，元素间 stagger 100ms（见 .hero-anim）
 *  - 滚动进入视口：600ms，ease-out，上移 24px（见 .reveal）
 *  - 光晕呼吸：9s / 11s 交替循环，仅 transform + opacity
 *  - 卡片悬浮：450ms ease-out，translateY(-4px) + 阴影加深
 *  - 定价卡渐变描边：hover 时 conic-gradient 流动（3s/圈）
 *  - 统一缓动：cubic-bezier(.22, 1, .36, 1)（ease-out，舒缓无弹跳）
 *  - prefers-reduced-motion：全部动画降级，页面完整可用
 * ============================================================ */

/* ---------- 设计变量（浅色为默认，深色见 html[data-theme="dark"]） ---------- */
:root {
  color-scheme: light;

  --bg:            #ffffff;
  --bg-soft:       #fafafa;
  --fg:            #0b0b0c;
  --fg-2:          #3f3f46;
  --muted:         #71717a;
  --border:        rgba(11, 11, 12, .09);
  --border-strong: rgba(11, 11, 12, .16);
  --card:          #ffffff;

  /* 语义色：随主题切换 */
  --header-bg:  rgba(255, 255, 255, .72);
  --hover-bg:   rgba(11, 11, 12, .05);
  --badge-bg:   rgba(255, 255, 255, .6);
  --code-bg:    #0f0f11;
  --code-border: transparent;
  --stroke:      rgba(11, 11, 12, .45);   /* 定价卡渐变描边 */
  --stroke-soft: rgba(11, 11, 12, .28);

  --shadow-sm: 0 1px 2px rgba(11, 11, 12, .04);
  --shadow-md: 0 4px 16px rgba(11, 11, 12, .05), 0 1px 3px rgba(11, 11, 12, .04);
  --shadow-lg: 0 16px 48px rgba(11, 11, 12, .09), 0 2px 8px rgba(11, 11, 12, .05);

  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  --ease-out: cubic-bezier(.22, 1, .36, 1);
  /* Apple 式动效曲线：大元素平滑减速，小元素轻微回弹 */
  --ease-ios: cubic-bezier(.32, .72, 0, 1);
  --ease-spring: cubic-bezier(.34, 1.45, .64, 1);
  --ease-press: cubic-bezier(.4, 0, .2, 1);

  --header-h: 68px;
  --container: 1120px;

  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI",
               "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
               "Noto Sans SC", sans-serif;
  --font-mono: "SF Mono", "JetBrains Mono", Consolas, "Courier New", monospace;
}

/* ---------- 深色主题：同等克制，近黑底 + 细边框 + 低饱和光晕 ---------- */
html[data-theme="dark"] {
  color-scheme: dark;

  --bg:            #0a0a0b;
  --bg-soft:       #0e0e10;
  --fg:            #f4f4f5;
  --fg-2:          #c6c6cc;
  --muted:         #8b8b92;
  --border:        rgba(255, 255, 255, .08);
  --border-strong: rgba(255, 255, 255, .17);
  --card:          #121214;

  --header-bg:  rgba(10, 10, 11, .7);
  --hover-bg:   rgba(255, 255, 255, .07);
  --badge-bg:   rgba(18, 18, 20, .65);
  --code-bg:    #151517;
  --code-border: rgba(255, 255, 255, .07);
  --stroke:      rgba(255, 255, 255, .5);
  --stroke-soft: rgba(255, 255, 255, .3);

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, .5);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, .45), 0 1px 3px rgba(0, 0, 0, .4);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, .55), 0 2px 8px rgba(0, 0, 0, .4);
}

/* 深色下的光晕：降低亮度，保留一点冷色微光 */
html[data-theme="dark"] .glow-a {
  background: radial-gradient(circle, rgba(96, 165, 250, .16), transparent 70%);
}
html[data-theme="dark"] .glow-b {
  background: radial-gradient(circle, rgba(167, 139, 250, .15), transparent 70%);
}

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

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

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background-color .3s var(--ease-out), color .3s var(--ease-out);
}

h1, h2, h3 { margin: 0; line-height: 1.15; }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }

a {
  color: inherit;
  text-decoration: none;
}

img, svg { display: block; }

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

/* ---------- 跨页面切换：Apple 式淡入（渐进增强，Chrome 支持） ----------
 * 头部单独命名并保持静止，只让页面内容交叉淡入。 */
@media (prefers-reduced-motion: no-preference) {
  @view-transition { navigation: auto; }
}

.site-header { view-transition-name: site-header; }

::view-transition-group(site-header) { animation: none; }

::view-transition-old(root) {
  animation: vtOut .22s cubic-bezier(.4, 0, 1, 1) both;
}

::view-transition-new(root) {
  animation: vtIn .4s var(--ease-ios) both;
}

@keyframes vtOut { to { opacity: 0; } }

@keyframes vtIn {
  from { opacity: 0; transform: scale(.995); }
  to   { opacity: 1; transform: none; }
}

/* 可访问性：键盘焦点可见 */
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 2px solid var(--fg);
  outline-offset: 3px;
  border-radius: 4px;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 24px;
}

.container-narrow { max-width: 760px; }

/* 锚点偏移，避免被固定导航遮挡 */
section[id] { scroll-margin-top: calc(var(--header-h) + 16px); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 20px;
  border-radius: 999px;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.5;
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: transform .35s var(--ease-spring),
              background-color .3s var(--ease-ios),
              border-color .3s var(--ease-ios),
              box-shadow .35s var(--ease-ios),
              opacity .3s var(--ease-ios);
}

/* 悬浮轻微抬起，按压立即回缩（Apple 式响应） */
.btn:hover { transform: translateY(-1px); }

.btn:active {
  transform: translateY(0) scale(.97);
  transition-duration: .12s;
  transition-timing-function: var(--ease-press);
}

.btn:disabled {
  opacity: .55;
  cursor: default;
  transform: none;
}

.btn-primary {
  background: var(--fg);
  color: var(--bg);
}
.btn-primary:hover { opacity: .82; }

.btn-outline {
  background: var(--bg);
  border-color: var(--border-strong);
  color: var(--fg);
}
.btn-outline:hover { border-color: var(--fg); }

.btn-ghost { color: var(--fg-2); }
.btn-ghost:hover { color: var(--fg); }

.btn-lg {
  padding: 13px 30px;
  font-size: 15px;
}

/* ---------- 顶部导航 ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--header-h);
  background: var(--header-bg);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s var(--ease-out), background-color .3s var(--ease-out);
}

.site-header.scrolled { border-bottom-color: var(--border); }

.header-inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;  /* 移动端隐藏中部导航后，菜单按钮仍靠右 */
  gap: 32px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 15px;
  letter-spacing: -.01em;
}

.brand-mark {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: var(--fg);
  color: var(--bg);
  display: grid;
  place-items: center;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0;
}

.site-nav { flex: 1; }

.site-nav ul {
  display: flex;
  justify-content: center;
  gap: 4px;
}

.site-nav a {
  display: block;
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 14px;
  color: var(--fg-2);
  transition: color .25s var(--ease-out), background-color .25s var(--ease-out);
}

.site-nav a:hover {
  color: var(--fg);
  background: var(--hover-bg);
}

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

.header-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* 深色模式切换：圆形幽灵按钮，只保留图标 */
.theme-toggle {
  position: relative;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid transparent;
  background: none;
  color: var(--fg-2);
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: background-color .3s var(--ease-ios), color .3s var(--ease-ios),
              transform .35s var(--ease-spring);
}

.theme-toggle:active { transform: scale(.94); }

/* 语言切换：文字胶囊按钮，显示当前语言 */
.lang-toggle {
  height: 36px;
  padding: 0 12px;
  border-radius: 999px;
  border: 1px solid transparent;
  background: none;
  color: var(--fg-2);
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  line-height: 1;
  cursor: pointer;
  transition: background-color .3s var(--ease-ios), color .3s var(--ease-ios),
              transform .35s var(--ease-spring);
}

.lang-toggle:active { transform: scale(.94); }

.lang-toggle:hover {
  background: var(--hover-bg);
  color: var(--fg);
}

/* 多语言选择：胶囊按钮 + 轻量弹出菜单 */
.lang-picker {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.lang-menu {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  min-width: 154px;
  padding: 6px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--card);
  box-shadow: var(--shadow-lg);
  z-index: 120;
  transform-origin: top right;
  animation: langMenuIn .2s var(--ease-ios) both;
}

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

@keyframes langMenuIn {
  from { opacity: 0; transform: translateY(-4px) scale(.98); }
  to   { opacity: 1; transform: none; }
}

.lang-option {
  display: flex;
  align-items: center;
  width: 100%;
  padding: 9px 10px;
  border: 0;
  border-radius: 9px;
  background: none;
  color: var(--fg-2);
  font-family: var(--font-sans);
  font-size: 13px;
  line-height: 1.2;
  text-align: left;
  cursor: pointer;
  transition: background-color .2s var(--ease-ios), color .2s var(--ease-ios);
}

.lang-option:hover {
  background: var(--hover-bg);
  color: var(--fg);
}

.lang-option.is-active {
  color: var(--fg);
  font-weight: 600;
}

.lang-option.is-active::after {
  content: "✓";
  margin-left: auto;
  padding-left: 16px;
  font-size: 12px;
}

.theme-toggle:hover {
  background: var(--hover-bg);
  color: var(--fg);
}

.theme-toggle svg {
  position: absolute;
  inset: 0;
  margin: auto;
  width: 17px;
  height: 17px;
  transition: opacity .4s var(--ease-ios), transform .5s var(--ease-spring);
}

/* 浅色显示月亮（切到深色），深色显示太阳（切到浅色），切换时交叉旋转 */
.theme-toggle .icon-sun {
  opacity: 0;
  transform: rotate(-45deg) scale(.7);
}
.theme-toggle .icon-moon {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}
html[data-theme="dark"] .theme-toggle .icon-sun {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}
html[data-theme="dark"] .theme-toggle .icon-moon {
  opacity: 0;
  transform: rotate(45deg) scale(.7);
}

/* 移动端菜单按钮（桌面端隐藏） */
.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 0;
  background: none;
  cursor: pointer;
  padding: 0;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.nav-toggle span {
  width: 20px;
  height: 1.5px;
  background: var(--fg);
  transition: transform .3s var(--ease-out);
}

.nav-toggle[aria-expanded="true"] span:first-child { transform: translateY(3.75px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:last-child  { transform: translateY(-3.75px) rotate(-45deg); }

.mobile-menu {
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  z-index: 99;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding: 12px 24px 24px;
  /* 极矮视口下可滚动，避免菜单被裁切 */
  max-height: calc(100dvh - var(--header-h));
  overflow-y: auto;
  transform-origin: top center;
}

/* 展开时 iOS 式下落 + 子项错峰 */
.mobile-menu:not([hidden]) {
  animation: menuDrop .32s var(--ease-ios) both;
}

.mobile-menu:not([hidden]) nav a {
  animation: menuItemIn .4s var(--ease-ios) both;
}

.mobile-menu:not([hidden]) nav a:nth-child(1) { animation-delay: .04s; }
.mobile-menu:not([hidden]) nav a:nth-child(2) { animation-delay: .08s; }
.mobile-menu:not([hidden]) nav a:nth-child(3) { animation-delay: .12s; }
.mobile-menu:not([hidden]) nav a:nth-child(4) { animation-delay: .16s; }

@keyframes menuDrop {
  from { opacity: 0; transform: translateY(-10px) scale(.99); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes menuItemIn {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.mobile-menu nav a {
  display: block;
  padding: 12px 0;
  font-size: 16px;
  border-bottom: 1px solid var(--border);
}

.mobile-menu-actions {
  display: flex;
  gap: 12px;
  margin-top: 16px;
}

.mobile-menu-actions .btn { flex: 1; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  /* 上多下少的留白，让首屏内容整体略低于视觉中线 */
  padding: calc(var(--header-h) + 120px) 0 96px;
  text-align: center;
}

/* 柔和光晕：唯一的一处色彩点睛，低饱和蓝 + 紫 */
.hero-glow {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  will-change: transform, opacity;
}

.glow-a {
  width: 560px;
  height: 560px;
  left: 50%;
  top: -180px;
  margin-left: -560px;
  background: radial-gradient(circle, rgba(191, 219, 254, .55), transparent 70%);
  /* 呼吸动画：9s 交替，仅缩放与透明度 */
  animation: breathe 9s ease-in-out infinite alternate;
}

.glow-b {
  width: 520px;
  height: 520px;
  left: 50%;
  top: -120px;
  background: radial-gradient(circle, rgba(221, 214, 254, .5), transparent 70%);
  /* 与 glow-a 错相位，11s 交替 */
  animation: breathe 11s ease-in-out -4s infinite alternate;
}

@keyframes breathe {
  from { transform: scale(1);    opacity: .75; }
  to   { transform: scale(1.12); opacity: 1; }
}

.hero-inner { position: relative; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--badge-bg);
  font-size: 13px;
  color: var(--fg-2);
  transition: border-color .3s var(--ease-out);
}

.hero-badge:hover { border-color: var(--border-strong); }

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #22c55e;
}

.hero-title {
  margin-top: 28px;
  font-size: clamp(56px, 9vw, 104px);
  font-weight: 700;
  letter-spacing: -.04em;
  line-height: 1.05;
}

/* 首页无徽标时，标题作为首元素不再需要顶部间距 */
.hero-inner > .hero-title:first-child {
  margin-top: 0;
}

.hero-claim {
  margin-top: 20px;
  font-size: clamp(20px, 3vw, 28px);
  font-weight: 600;
  letter-spacing: -.02em;
  color: var(--fg);
}

.hero-sub {
  margin: 18px auto 0;
  max-width: 600px;
  font-size: 16px;
  font-weight: 400;
  color: var(--muted);
  text-wrap: pretty;   /* 避免中文孤字 / 断词跨行的观感问题，不支持时自动回退 */
}

.hero-actions {
  margin-top: 36px;
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

/* 产品页紧凑 Hero：为下方内容让出首屏空间 */
.hero.is-compact {
  padding: calc(var(--header-h) + 88px) 0 72px;
}

/* 工作室品牌名作为主标题时略降字号，避免长串溢出 */
.hero-title.is-brand {
  font-size: clamp(42px, 6.4vw, 84px);
  letter-spacing: -.045em;
  max-width: 900px;
  margin-inline: auto;
}

/* 产品页展示区：内容收窄、与 Hero 衔接 */
.showcase { padding-top: 0; }

.showcase-visual { margin-top: 8px; }

/* 术语防断行：避免「控制流平坦化」等专业词在一行末尾被拆开 */
.nw { white-space: nowrap; }

/* Hero 入场动画：900ms，Apple 式平滑减速 + 轻微缩放，stagger 由 --d 控制 */
html.anim .hero-anim {
  opacity: 0;
  animation: fadeUp .9s var(--ease-ios) forwards;
  animation-delay: var(--d, 0ms);
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(28px) scale(.98); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

/* ---------- 通用区块 ---------- */
.section { padding: 112px 0; }

.section-soft { background: var(--bg-soft); }

.section-head {
  max-width: 640px;
  margin-bottom: 56px;
}

.eyebrow {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .12em;
  color: var(--muted);
  margin-bottom: 14px;
}

.section-head h2 {
  font-size: clamp(30px, 4.5vw, 44px);
  font-weight: 700;
  letter-spacing: -.03em;
}

.section-sub {
  margin-top: 16px;
  font-size: 16px;
  color: var(--muted);
  text-wrap: pretty;
}

/* 产品免责声明（FALauncher 页）：细线分隔、弱化层级 */
.product-disclaimer {
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  max-width: 560px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
  text-wrap: pretty;
}

/* ---------- 滚动进入动画（IntersectionObserver 添加 .in） ----------
 * 仅当 JS 确认未开启 reduced-motion 时，<html> 才有 .anim 类，
 * 因此关闭动效 / 禁用 JS 时内容始终可见。 */
html.anim .reveal {
  opacity: 0;
  transform: translateY(28px) scale(.985);
  transition: opacity .7s var(--ease-ios), transform .7s var(--ease-ios);
  transition-delay: var(--d, 0ms);
  will-change: opacity, transform;
}

html.anim .reveal.in {
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* ---------- 产品展示 ---------- */
.product-list {
  display: grid;
  gap: 24px;
}

.product-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: translate .5s var(--ease-ios), scale .5s var(--ease-ios),
              box-shadow .5s var(--ease-ios);
}

/* 卡片悬浮：轻微抬升 + 阴影加深（独立 translate/scale，避免与入场 transform 冲突） */
.product-card:hover {
  translate: 0 -6px;
  scale: 1.004;
  box-shadow: var(--shadow-lg);
}

.product-card-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  padding: 48px;
  align-items: center;
}

.product-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.product-category {
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: .08em;
}

/* 即将推出状态标签 */
.product-status {
  padding: 2px 9px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg-soft);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .04em;
  color: var(--muted);
}

.product-name {
  margin-top: 10px;
  font-size: clamp(28px, 3.5vw, 36px);
  font-weight: 700;
  letter-spacing: -.02em;
}

.product-tagline {
  margin-top: 12px;
  color: var(--muted);
  font-size: 15px;
  max-width: 380px;
}

.product-tags {
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.product-tags li {
  padding: 5px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 13px;
  color: var(--fg-2);
  background: var(--bg-soft);
}

.product-cta {
  margin-top: 32px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--fg);
}

.product-cta .arrow { transition: transform .35s var(--ease-spring); }
.product-cta:hover .arrow { transform: translateX(4px); }

/* 代码混淆可视化：左右两个版本缓慢交叉淡入淡出（7s 循环） */
.code-window {
  background: var(--code-bg);
  border: 1px solid var(--code-border);
  border-radius: var(--radius-lg);
  padding: 18px 20px 20px;
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.code-window-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.code-dots { display: flex; gap: 6px; }
.code-dots span {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .14);
}

.code-label {
  position: relative;
  height: 16px;
  min-width: 64px;
  font-size: 11px;
  font-family: var(--font-mono);
  color: rgba(255, 255, 255, .45);
  text-align: right;
}

.code-label span {
  position: absolute;
  right: 0;
  top: 0;
  transition: opacity .8s var(--ease-out);
}

.code-body {
  position: relative;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.75;
  white-space: pre;
  /* 两个代码版本网格堆叠在同一格，容器高度取两者较大值，无滚动条 */
  display: grid;
  overflow: hidden;
}

.code-body pre {
  margin: 0;
  grid-area: 1 / 1;
  overflow: hidden;
}

/* 静态基态：仅显示「混淆前」，避免无动画时两个版本叠在一起 */
.code-before { color: rgba(255, 255, 255, .82); }

.code-after {
  color: rgba(255, 255, 255, .5);
  opacity: 0;
}

/* 串行切换：A 淡出 → 短暂留白 → B 淡入，避免两版文字重叠 */
html.anim .code-before,
html.anim .code-label .label-before {
  animation: codeSwapA 7s ease-in-out infinite;
}
html.anim .code-after,
html.anim .code-label .label-after {
  animation: codeSwapB 7s ease-in-out infinite;
}

@keyframes codeSwapA {
  0%, 44%  { opacity: 1; }
  48%, 94% { opacity: 0; }
  100%     { opacity: 1; }
}

@keyframes codeSwapB {
  0%, 51%   { opacity: 0; }
  55%, 89%  { opacity: 1; }
  93%, 100% { opacity: 0; }
}

.code-label .label-after { opacity: 0; }

/* ---------- 启动器骨架预览（即将推出的产品占位视觉） ----------
 * 与代码窗同一深色语言；骨架条 + 虚线表示「开发中」，不虚构真实界面 */
.app-preview {
  background: var(--code-bg);
  border: 1px solid var(--code-border);
  border-radius: var(--radius-lg);
  padding: 18px 20px 20px;
  box-shadow: var(--shadow-md);
}

.app-preview-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.app-preview-tag {
  padding: 2px 10px;
  border: 1px solid rgba(255, 255, 255, .14);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: rgba(255, 255, 255, .48);
}

.app-preview-body {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.app-account {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, .07);
}

.app-avatar {
  flex: none;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .12);
}

/* 骨架条 */
.sk {
  display: block;
  height: 8px;
  border-radius: 4px;
  background: rgba(255, 255, 255, .1);
}

.sk-dim { background: rgba(255, 255, 255, .055); }
.sk-w55 { width: 55%; }
.sk-w50 { width: 50%; }
.sk-w45 { width: 45%; }
.sk-w40 { width: 40%; }
.sk-w35 { width: 35%; }
.sk-w25 { width: 25%; }

.app-versions {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.app-version {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border: 1px solid transparent;
  border-radius: 10px;
}

.app-version.is-active {
  border-color: rgba(255, 255, 255, .16);
  background: rgba(255, 255, 255, .04);
}

.app-version-dot {
  flex: none;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .22);
}

.app-version.is-active .app-version-dot {
  background: rgba(255, 255, 255, .8);
}

.app-launch {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  height: 36px;
  border-radius: 10px;
  border: 1px dashed rgba(255, 255, 255, .18);
  background: rgba(255, 255, 255, .03);
}

.app-play {
  width: 0;
  height: 0;
  border-left: 6px solid rgba(255, 255, 255, .35);
  border-top: 4px solid transparent;
  border-bottom: 4px solid transparent;
}

/* ---------- 音乐播放器骨架预览 ---------- */
.music-body {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.music-now {
  display: flex;
  align-items: center;
  gap: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, .07);
}

.music-cover {
  position: relative;
  flex: none;
  width: 84px;
  height: 84px;
  border-radius: 12px;
  background: rgba(255, 255, 255, .1);
}

.music-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  margin: auto;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .18);
}

.music-meta {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 9px;
  min-width: 0;
}

.music-progress {
  height: 4px;
  margin-top: 4px;
  border-radius: 2px;
  background: rgba(255, 255, 255, .1);
  overflow: hidden;
}

.music-progress span {
  display: block;
  width: 42%;
  height: 100%;
  border-radius: inherit;
  background: rgba(255, 255, 255, .55);
}

.music-controls {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 4px;
}

.mc-btn {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, .28);
}

.mc-play {
  position: relative;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, .28);
  background: rgba(255, 255, 255, .14);
}

.mc-play::after {
  content: "";
  position: absolute;
  left: 10px;
  top: 8px;
  border-left: 6px solid rgba(255, 255, 255, .6);
  border-top: 4px solid transparent;
  border-bottom: 4px solid transparent;
}

.music-queue {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.music-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: 10px;
}

.music-row.is-active {
  border: 1px solid rgba(255, 255, 255, .16);
  background: rgba(255, 255, 255, .04);
}

.music-thumb {
  flex: none;
  width: 22px;
  height: 22px;
  border-radius: 6px;
  background: rgba(255, 255, 255, .1);
}

/* 次级产品卡网格：开发中产品与未来产品预留位同列排布 */
.product-grid {
  margin-top: 24px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
}

/* 次级产品卡：更紧凑的排版，与主推大卡形成明确层级 */
.product-card.compact {
  padding: 28px;
  display: flex;
  flex-direction: column;
}

.product-card.compact .product-name {
  margin-top: 10px;
  font-size: 24px;
}

.product-card.compact .product-tagline {
  margin-top: 8px;
  font-size: 14px;
  max-width: none;
}

.product-card.compact .product-cta {
  margin-top: auto;
  padding-top: 22px;
}

/* 未来产品预留位：虚线骨架卡 */
.product-skeleton {
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: var(--muted);
  min-height: 160px;
  text-align: center;
}

.product-skeleton .plus {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--border-strong);
  display: grid;
  place-items: center;
  font-size: 18px;
  font-weight: 300;
}

.product-skeleton p { font-size: 13px; }

/* ---------- 功能亮点 ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

/* 首页原则卡：三列自适应 */
.feature-grid.cols-3 {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.feature-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: translate .5s var(--ease-ios),
              scale .5s var(--ease-ios),
              box-shadow .5s var(--ease-ios),
              border-color .5s var(--ease-ios);
}

.feature-card:hover {
  translate: 0 -4px;
  scale: 1.003;
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
}

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--bg-soft);
  display: grid;
  place-items: center;
  color: var(--fg);
  /* 图标微动：悬浮时轻微上移 */
  transition: transform .45s var(--ease-spring);
}

.feature-card:hover .feature-icon { transform: translateY(-3px) scale(1.04); }

.feature-icon svg {
  width: 20px;
  height: 20px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.feature-card h3 {
  margin-top: 18px;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -.01em;
}

.feature-card p {
  margin-top: 8px;
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
}

/* ---------- 定价 ---------- */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 32px 24px;
  max-width: 880px;
  margin-inline: auto;
}

.plan-card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 36px;
  display: flex;
  flex-direction: column;
  transition: translate .5s var(--ease-ios), scale .5s var(--ease-ios),
              box-shadow .5s var(--ease-ios);
}

.plan-card:hover {
  translate: 0 -5px;
  scale: 1.003;
  box-shadow: var(--shadow-lg);
}

/* 渐变描边：默认透明，hover 时淡入并缓慢流动（3s/圈）
 * 使用 mask 合成实现 1px 描边；@property 不支持时退化为静态渐变 */
@property --angle {
  syntax: "<angle>";
  initial-value: 0deg;
  inherits: false;
}

.plan-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: conic-gradient(from var(--angle),
              transparent 0%, var(--stroke) 12%,
              transparent 30%, transparent 55%,
              var(--stroke-soft) 67%, transparent 85%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask-composite: exclude;
  opacity: 0;
  transition: opacity .4s var(--ease-out);
  pointer-events: none;
}

.plan-card:hover::before {
  opacity: 1;
  animation: spinAngle 3s linear infinite;
}

@keyframes spinAngle { to { --angle: 360deg; } }

.plan-badge {
  position: absolute;
  top: -13px;
  left: 36px;
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--fg);
  color: var(--bg);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .04em;
}

.plan-name {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -.01em;
}

.plan-audience {
  margin-top: 6px;
  font-size: 14px;
  color: var(--muted);
}

.plan-price {
  margin-top: 28px;
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.plan-price .amount {
  font-size: 44px;
  font-weight: 700;
  letter-spacing: -.03em;
  line-height: 1;
}

.plan-price .unit {
  font-size: 15px;
  color: var(--muted);
}

.plan-note {
  margin-top: 8px;
  font-size: 13px;
  color: var(--muted);
}

/* 人民币参考价 */
.plan-alt {
  margin-top: 6px;
  font-size: 13px;
  color: var(--muted);
}

/* 价格说明（席位 / 续更 / 试用） */
.pricing-notes {
  max-width: 880px;
  margin: 28px auto 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 28px;
  font-size: 13px;
  color: var(--muted);
  text-align: center;
}

.plan-benefits {
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}

.plan-benefits li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--fg-2);
}

.plan-benefits .check {
  flex: none;
  width: 16px;
  height: 16px;
  margin-top: 3px;
  color: var(--fg);
}

.plan-card .btn {
  margin-top: 32px;
  width: 100%;
}

/* 推荐方案：黑色主按钮 + 卡片微调 */
.plan-card.featured {
  border-color: var(--border-strong);
}

/* ---------- FAQ ---------- */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color .3s var(--ease-out);
}

.faq-item[open] { border-color: var(--border-strong); }

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 22px;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  list-style: none;
  user-select: none;
}

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

.faq-item .chev {
  flex: none;
  width: 16px;
  height: 16px;
  color: var(--muted);
  transition: transform .45s var(--ease-spring);
}

.faq-item[open] .chev { transform: rotate(180deg); }

.faq-answer {
  padding: 0 22px 20px;
  font-size: 14px;
  color: var(--muted);
  line-height: 1.8;
}

/* ---------- 文档中心 ---------- */
.doc-group { margin-bottom: 48px; }
.doc-group:last-child { margin-bottom: 0; }

.doc-group-title {
  margin: 0 0 12px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
}

.doc-items {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--border);
}

.doc-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 22px 20px;
  border-bottom: 1px solid var(--border);
  transition: background-color .3s var(--ease-out);
}

a.doc-item {
  color: inherit;
  text-decoration: none;
}

a.doc-item:hover { background: var(--hover-bg); }

.doc-item-main {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.doc-item-title {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -.01em;
}

.doc-item-desc {
  font-size: 14px;
  color: var(--muted);
}

.doc-item-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  flex: none;
}

.doc-badge {
  padding: 3px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 12px;
  color: var(--muted);
  white-space: nowrap;
}

.doc-badge.is-available {
  border-color: var(--border-strong);
  color: var(--fg-2);
}

.doc-arrow {
  color: var(--muted);
  transition: transform .35s var(--ease-spring), color .3s var(--ease-ios);
}

a.doc-item:hover .doc-arrow {
  transform: translateX(4px);
  color: var(--fg);
}

.doc-item.is-disabled { opacity: .55; }

/* ---------- 文档文章（FA Wpob 使用说明） ---------- */
.docs-article-section { padding-top: 24px; }

.doc-hero-title {
  font-size: clamp(40px, 6vw, 76px);
  white-space: nowrap;
}

@media (max-width: 720px) {
  .doc-hero-title {
    font-size: clamp(31px, 8.8vw, 44px);
  }
}

.doc-layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 56px;
  align-items: start;
}

.doc-sidebar {
  position: sticky;
  top: calc(var(--header-h) + 24px);
  max-height: calc(100vh - var(--header-h) - 48px);
  overflow-y: auto;
  padding-right: 4px;
}

.doc-sidebar .eyebrow { margin-bottom: 16px; }

.doc-toc {
  display: flex;
  flex-direction: column;
  gap: 2px;
  border-left: 1px solid var(--border);
  padding-left: 14px;
}

.doc-toc a {
  display: block;
  padding: 5px 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
  transition: color .2s var(--ease-ios);
}

.doc-toc a:hover,
.doc-toc a.is-active {
  color: var(--fg);
}

.doc-toc a.is-active { font-weight: 600; }

.doc-article { min-width: 0; }

.doc-article h2 {
  margin: 52px 0 14px;
  font-size: 30px;
  letter-spacing: -.02em;
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.doc-article h2:first-child { margin-top: 0; }

.doc-article h3 {
  margin: 30px 0 10px;
  font-size: 20px;
  letter-spacing: -.01em;
}

.doc-article p {
  margin: 12px 0;
  color: var(--fg-2);
  font-size: 15.5px;
  line-height: 1.85;
  text-wrap: pretty;
}

.doc-article ul,
.doc-article ol {
  margin: 12px 0;
  padding-left: 24px;
}

.doc-article li {
  margin: 7px 0;
  color: var(--fg-2);
  font-size: 15.5px;
  line-height: 1.8;
}

.doc-article li::marker { color: var(--muted); }

.doc-article strong {
  color: var(--fg);
  font-weight: 600;
}

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

.doc-article code {
  padding: 2px 6px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-soft);
  color: var(--fg);
  font-family: var(--font-mono);
  font-size: .88em;
  word-break: break-word;
}

.doc-article pre {
  margin: 16px 0;
  padding: 18px 20px;
  overflow-x: auto;
  border: 1px solid var(--code-border);
  border-radius: 14px;
  background: var(--code-bg);
}

.doc-article pre code {
  padding: 0;
  border: 0;
  background: none;
  color: #e4e4e7;
  font-size: 13px;
  line-height: 1.7;
  white-space: pre;
  word-break: normal;
}

.doc-article blockquote {
  margin: 16px 0;
  padding: 12px 18px;
  border-left: 3px solid var(--border-strong);
  border-radius: 0 10px 10px 0;
  background: var(--bg-soft);
  color: var(--muted);
}

.doc-article blockquote p {
  margin: 0;
  color: var(--muted);
}

.doc-article hr {
  margin: 40px 0;
  border: 0;
  border-top: 1px solid var(--border);
}

.doc-table-wrap {
  margin: 18px 0;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 14px;
}

.doc-article table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  font-size: 14px;
}

.doc-article th,
.doc-article td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

.doc-article th {
  background: var(--bg-soft);
  color: var(--muted);
  font-weight: 600;
  white-space: nowrap;
}

.doc-article tr:last-child td { border-bottom: 0; }

.doc-toc-mobile {
  display: none;
  margin: 0 0 24px;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--bg-soft);
}

.doc-toc-mobile summary {
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
}

.doc-toc-mobile .doc-toc {
  margin-top: 12px;
  border-left: 0;
  padding-left: 0;
}

@media (max-width: 900px) {
  .doc-layout { display: block; }
  .doc-sidebar { display: none; }
  .doc-toc-mobile { display: block; }
}

@media (max-width: 720px) {
  .doc-article h2 {
    margin-top: 40px;
    font-size: 25px;
  }

  .doc-article h3 { font-size: 18px; }

  .doc-article p,
  .doc-article li { font-size: 15px; }

  .doc-article pre { padding: 16px; }
}

/* ---------- 免责声明页 ---------- */
.legal-body { padding-bottom: 112px; }

/* ---------- 中国大陆专区 ---------- */
.cn-notice {
  display: inline-block;
  max-width: 640px;
  margin-top: 22px;
  padding: 10px 16px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--badge-bg);
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.6;
  text-wrap: pretty;
}

.cn-notice a {
  color: var(--fg-2);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* 中国区顶部地区条：让「访问国际版」始终在首屏可见 */
.cn-header-gap { height: var(--header-h); }

.cn-region-bar {
  border-bottom: 1px solid var(--border);
  background: var(--bg-soft);
}

.cn-region-inner {
  min-height: 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.5;
}

.cn-region-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border: 1px solid var(--fg);
  border-radius: 999px;
  background: var(--fg);
  color: var(--bg);
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
  transition: opacity .25s var(--ease-ios), transform .3s var(--ease-spring);
}

.cn-region-link:hover {
  opacity: .88;
  transform: translateY(-1px);
}

.cn-region-link:active { transform: scale(.97); }

.cn-region-link .arrow {
  transition: transform .3s var(--ease-ios);
}

.cn-region-link:hover .arrow { transform: translateX(3px); }

@media (max-width: 720px) {
  .cn-region-inner {
    flex-wrap: wrap;
    padding-block: 7px;
  }

  .cn-region-link { padding: 5px 10px; }
}

.cn-legal-block {
  padding-bottom: 48px;
  scroll-margin-top: calc(var(--header-h) + 12px);
}

.cn-legal-block > .container > h2 {
  margin-top: 8px;
  font-size: 30px;
  letter-spacing: -.02em;
}

.cn-legal-block .legal-section:first-child { border-top: 0; }

.cn-legal-last { padding-bottom: 112px; }

.footer-global {
  margin-top: 6px;
  font-size: 12px;
}

.footer-global a {
  color: var(--muted);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.footer-global a:hover { color: var(--fg); }

/* 条款总述：使用即受条款约束 */
.legal-intro {
  margin: 0 0 8px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--fg-2);
  text-wrap: pretty;
}

.legal-section {
  padding: 28px 0;
  border-top: 1px solid var(--border);
}

.legal-section h2 {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -.01em;
}

.legal-section p {
  margin-top: 12px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
  text-wrap: pretty;
}

.legal-updated {
  margin-top: 14px;
  font-size: 13px;
  color: var(--muted);
}

@media (max-width: 720px) {
  .doc-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    padding: 20px 16px;
  }

  .doc-item-meta { align-self: flex-start; }
}

/* ---------- 结尾 CTA ---------- */
.cta-band { text-align: center; }

.cta-inner h2 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  letter-spacing: -.03em;
}

.cta-inner p {
  margin: 16px auto 32px;
  color: var(--muted);
  max-width: 440px;
}

/* ---------- 账号 / 管理员 ---------- */
.account-section { padding: 8px 0 112px; }

.auth-card {
  max-width: 440px;
  margin: 0 auto;
  padding: 32px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  animation: authCardIn .5s var(--ease-ios) both;
}

@keyframes authCardIn {
  from { opacity: 0; transform: translateY(10px) scale(.985); }
  to   { opacity: 1; transform: none; }
}

.auth-tabs {
  display: inline-flex;
  gap: 4px;
  padding: 4px;
  margin-bottom: 24px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg-soft);
}

.auth-tab {
  padding: 7px 16px;
  border: 0;
  border-radius: 999px;
  background: none;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
  cursor: pointer;
  transition: background-color .3s var(--ease-ios), color .3s var(--ease-ios),
              box-shadow .3s var(--ease-ios), transform .3s var(--ease-spring);
}

.auth-tab:active { transform: scale(.97); }

.auth-tab.is-active {
  background: var(--card);
  color: var(--fg);
  box-shadow: var(--shadow-sm);
}

.auth-title {
  font-size: 26px;
  letter-spacing: -.02em;
}

.auth-sub {
  margin-top: 10px;
  font-size: 14px;
  color: var(--muted);
}

.auth-form {
  margin-top: 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.auth-submit {
  width: 100%;
  margin-top: 6px;
}

.auth-switch {
  margin-top: 16px;
  text-align: center;
  font-size: 13px;
  color: var(--muted);
}

.auth-link {
  padding: 0;
  border: 0;
  background: none;
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--fg-2);
  text-decoration: underline;
  text-underline-offset: 2px;
  cursor: pointer;
}

.auth-link:hover { color: var(--fg); }

.account-actions {
  margin-top: 24px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.password-form {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

/* 注册同意声明 */
.auth-consent {
  margin-top: 2px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--muted);
  text-wrap: pretty;
}

.auth-consent a {
  color: var(--fg-2);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.auth-consent a:hover { color: var(--fg); }

.auth-success {
  font-size: 13px;
  color: #16a34a;
}

html[data-theme="dark"] .auth-success { color: #4ade80; }

/* 管理员等待列表 */
.admin-panel {
  padding: 24px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  animation: authCardIn .5s var(--ease-ios) both;
}

.admin-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.admin-count {
  font-size: 13px;
  color: var(--muted);
}

.admin-tools { display: flex; gap: 8px; }

.btn-sm {
  padding: 7px 14px;
  font-size: 13px;
}

.admin-table-wrap { overflow-x: auto; }

.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.admin-table th {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border-strong);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--muted);
  text-align: left;
  white-space: nowrap;
}

.admin-table td {
  padding: 12px;
  border-bottom: 1px solid var(--border);
  color: var(--fg-2);
  vertical-align: top;
}

/* 行入场：按索引错峰 */
.admin-table tbody tr {
  animation: rowIn .45s var(--ease-ios) both;
  animation-delay: calc(var(--i, 0) * 28ms);
}

@keyframes rowIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: none; }
}

.admin-table td:first-child {
  color: var(--fg);
  font-weight: 500;
}

.admin-empty {
  padding: 28px 12px;
  text-align: center;
  font-size: 14px;
  color: var(--muted);
}

/* 管理后台标签页 */
.admin-tabs {
  display: inline-flex;
  gap: 4px;
  padding: 4px;
  margin-bottom: 20px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg-soft);
}

.admin-tab {
  padding: 7px 16px;
  border: 0;
  border-radius: 999px;
  background: none;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
  cursor: pointer;
  transition: background-color .3s var(--ease-ios), color .3s var(--ease-ios),
              box-shadow .3s var(--ease-ios);
}

.admin-tab.is-active {
  background: var(--card);
  color: var(--fg);
  box-shadow: var(--shadow-sm);
}

.admin-view { min-width: 0; }

.admin-subtitle {
  margin: 24px 0 10px;
  font-size: 14px;
  font-weight: 600;
}

.admin-licenses .admin-subtitle:first-of-type { margin-top: 8px; }

.admin-mono {
  font-family: var(--font-mono);
  font-size: 12px;
  white-space: nowrap;
}

.admin-note {
  margin-top: 10px;
  font-size: 13px;
  color: var(--muted);
}

.admin-note.is-error { color: #dc2626; }
html[data-theme="dark"] .admin-note.is-error { color: #f87171; }

.admin-badge {
  display: inline-block;
  padding: 2px 9px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 12px;
  color: var(--muted);
  white-space: nowrap;
}

.admin-badge.status-paid { color: var(--fg-2); border-color: var(--border-strong); }
.admin-badge.status-issued {
  color: var(--fg);
  border-color: var(--border-strong);
  background: var(--bg-soft);
}
.admin-badge.status-canceled { opacity: .6; }

.admin-actions { white-space: nowrap; }
.admin-actions .btn { margin-right: 4px; }

/* 新建订单 */
.admin-new-order {
  margin-bottom: 16px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg-soft);
}

.admin-new-order-summary {
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
}

.admin-order-form {
  margin-top: 14px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.admin-order-form .btn { justify-self: start; }
.admin-order-form .admin-note { grid-column: 1 / -1; margin-top: 0; }

@media (max-width: 720px) {
  .admin-order-form { grid-template-columns: 1fr; }
}

/* 附加 license */
.admin-attach-row td { padding-top: 0; }

.admin-license-input {
  width: 100%;
  height: auto;
  min-height: 120px;
  padding: 12px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  resize: vertical;
  white-space: pre;
}

.admin-attach-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 10px;
}

.admin-attach-actions .admin-note { margin-top: 0; }

/* 账号页 license 列表 */
.account-licenses {
  max-width: 440px;
  margin: 20px auto 0;
}

.account-licenses-title {
  font-size: 18px;
  letter-spacing: -.01em;
}

.account-licenses-sub {
  margin-top: 6px;
  font-size: 13px;
  color: var(--muted);
}

.license-list {
  margin-top: 14px;
  border-top: 1px solid var(--border);
}

.license-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 2px;
  border-bottom: 1px solid var(--border);
}

.license-meta {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
}

.license-sku {
  font-size: 14px;
  font-weight: 600;
}

.license-sub {
  font-size: 12px;
  color: var(--muted);
}

/* 购买 / 兑换卡密弹窗 */
.purchase-panel { width: min(480px, 100%); }

.purchase-store { width: 100%; }
.purchase-store.is-disabled { opacity: .55; pointer-events: none; }

.purchase-divider {
  height: 1px;
  margin: 20px 0;
  background: var(--border);
}

.purchase-subtitle {
  font-size: 18px;
  letter-spacing: -.01em;
}

.purchase-note {
  margin-top: 6px;
  font-size: 13px;
  color: var(--muted);
}

.purchase-form {
  margin-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.purchase-hint {
  font-size: 12px;
  color: var(--muted);
  font-family: var(--font-mono);
  word-break: break-word;
}

.purchase-submit {
  width: 100%;
  margin-top: 4px;
}

.purchase-success {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 10px;
  padding-top: 8px;
}

.purchase-success h3 { font-size: 20px; }

.purchase-success p {
  font-size: 14px;
  color: var(--muted);
}

/* 定价区兑换入口 */
.pricing-redeem-wrap {
  margin-top: 16px;
  text-align: center;
}

.account-redeem { margin-top: 8px; }

/* 卡密生成结果 */
.admin-keys {
  margin: 0 0 16px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg-soft);
}

.admin-keys-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.admin-keys-actions { display: flex; gap: 8px; }

.admin-keys textarea { width: 100%; }

.admin-gate {
  max-width: 480px;
  margin: 0 auto;
  padding: 36px 28px;
  text-align: center;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  animation: authCardIn .5s var(--ease-ios) both;
}

.admin-gate h2 {
  font-size: 22px;
  letter-spacing: -.01em;
}

.admin-gate p {
  margin-top: 10px;
  font-size: 14px;
  color: var(--muted);
}

.admin-gate .btn { margin-top: 22px; }

@media (max-width: 720px) {
  .auth-card { padding: 26px 20px; }
  .admin-panel { padding: 16px; }
}

/* ---------- 等待列表弹窗 ---------- */
body.modal-open { overflow: hidden; }

.modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: grid;
  place-items: center;
  padding: 20px;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(10, 10, 11, .55);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  animation: modalFadeIn .3s var(--ease-ios) both;
}

html[data-theme="dark"] .modal-backdrop {
  background: rgba(0, 0, 0, .65);
}

.modal-panel {
  position: relative;
  width: min(440px, 100%);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 32px;
  box-shadow: var(--shadow-lg);
  animation: modalIn .5s var(--ease-ios);
}

@keyframes modalFadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes modalIn {
  from { opacity: 0; transform: translateY(16px) scale(.96); }
  to   { opacity: 1; transform: none; }
}

/* 关闭：iOS 式快速收拢 */
.modal.is-closing .modal-panel {
  animation: modalOut .22s var(--ease-press) forwards;
}

.modal.is-closing .modal-backdrop {
  animation: modalFadeOut .22s var(--ease-press) forwards;
}

@keyframes modalOut {
  to { opacity: 0; transform: translateY(8px) scale(.98); }
}

@keyframes modalFadeOut {
  to { opacity: 0; }
}

.modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 32px;
  height: 32px;
  border: 0;
  border-radius: 50%;
  background: none;
  color: var(--muted);
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
}

.modal-close:hover {
  background: var(--hover-bg);
  color: var(--fg);
}

.modal-panel h2 {
  margin-top: 6px;
  font-size: 26px;
  letter-spacing: -.02em;
}

.modal-sub {
  margin-top: 10px;
  font-size: 14px;
  color: var(--muted);
}

.waitlist-form {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.waitlist-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--fg-2);
}

.waitlist-input {
  height: 46px;
  padding: 0 14px;
  border-radius: 12px;
  border: 1px solid var(--border-strong);
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 15px;
  outline: none;
  transition: border-color .2s var(--ease-out), box-shadow .2s var(--ease-out);
}

.waitlist-input:focus {
  border-color: var(--fg);
  box-shadow: 0 0 0 3px rgba(11, 11, 12, .08);
}

html[data-theme="dark"] .waitlist-input:focus {
  box-shadow: 0 0 0 3px rgba(255, 255, 255, .12);
}

/* 蜜罐字段：对用户不可见，机器人填写即拦截 */
.waitlist-hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.waitlist-error {
  font-size: 13px;
  color: #dc2626;
}

html[data-theme="dark"] .waitlist-error { color: #f87171; }

.waitlist-submit {
  width: 100%;
  margin-top: 6px;
}

.waitlist-note {
  font-size: 12px;
  color: var(--muted);
}

.waitlist-note a {
  color: var(--fg-2);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color .2s var(--ease-out);
}

.waitlist-note a:hover { color: var(--fg); }

.waitlist-success {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 10px;
  animation: successIn .5s var(--ease-ios) both;
}

@keyframes successIn {
  from { opacity: 0; transform: translateY(8px) scale(.98); }
  to   { opacity: 1; transform: none; }
}

.waitlist-check {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  border: 1px solid var(--border);
  background: var(--bg-soft);
  font-size: 18px;
}

.waitlist-success h3 {
  font-size: 20px;
  letter-spacing: -.01em;
}

.waitlist-success p {
  font-size: 14px;
  color: var(--muted);
}

.waitlist-success .btn { margin-top: 8px; }

@media (max-width: 480px) {
  .modal-panel { padding: 26px 22px; }
}

/* ---------- 页脚 ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  padding-top: 64px;
  background: var(--bg);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer-tagline {
  margin-top: 16px;
  font-size: 14px;
  color: var(--muted);
}

.footer-col h3 {
  font-size: 13px;
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 16px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col a {
  font-size: 14px;
  color: var(--muted);
  transition: color .25s var(--ease-out);
}

.footer-col a:hover { color: var(--fg); }

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  padding-bottom: 32px;
}

.footer-bottom p {
  font-size: 13px;
  color: var(--muted);
}

/* 法律管辖声明：弱化层级，置于版权下方 */
.footer-legal {
  margin-top: 6px;
  font-size: 12px;
}

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .product-card-inner {
    grid-template-columns: 1fr;
    padding: 36px;
    gap: 36px;
  }

  .feature-grid { grid-template-columns: repeat(2, 1fr); }

  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
}

@media (max-width: 720px) {
  .site-nav, .header-actions { display: none; }
  .nav-toggle { display: flex; }

  .header-inner { gap: 16px; }

  /* 品牌名较长时在窄屏紧凑换行，保持与图标垂直居中 */
  .brand-name {
    max-width: 118px;
    line-height: 1.3;
    font-size: 14px;
  }

  /* 语言按钮收紧，避免「中文」被拆成两行 */
  .lang-toggle {
    padding: 0 8px;
    font-size: 12px;
    white-space: nowrap;
  }

  .hero { padding: calc(var(--header-h) + 64px) 0 88px; }

  .section { padding: 80px 0; }

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

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

  .plan-badge { left: 28px; }
  .plan-card { padding: 28px; }

  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
}

/* ---------- 减少动态效果：关闭所有动画，内容立即可见 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }

  /* 代码窗降级为上下并列静态展示，两个版本均可见 */
  .code-body { display: block; }
  .code-body .code-after { opacity: 1; margin-top: 12px; }
  .code-label .label-after { position: static; opacity: 1; }
}

/* ============================================================
 * FALauncher 产品页（正式发布版）
 * 组件：下载卡 / 截图网格 / 功能卡 / 安装步骤 / 系统要求 / FAQ
 * 只复用既有设计变量，不引入新的视觉语言。
 * ============================================================ */

.fl-shot-section { padding-top: 24px; }

.fl-shot { margin: 0; }

.fl-shot img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg-soft);
  box-shadow: var(--shadow-lg);
}

.fl-shots {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
  margin-top: 8px;
}

.fl-shots .fl-shot img {
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

.fl-shots figcaption {
  margin-top: 10px;
  font-size: 13px;
  color: var(--muted);
  text-align: center;
}

/* ---------- 下载 ---------- */
.fl-dl-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.fl-dl-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 28px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.fl-dl-head h3 { margin: 0 0 4px; font-size: 20px; }
.fl-dl-head p { margin: 0; font-size: 14px; color: var(--muted); }

.fl-dl-meta { display: flex; gap: 32px; margin: 0; }
.fl-dl-meta dt {
  font-size: 11px;
  letter-spacing: .07em;
  text-transform: uppercase;
  color: var(--muted);
}
.fl-dl-meta dd { margin: 3px 0 0; font-size: 15px; }

.fl-dl-btn { width: 100%; justify-content: center; }

.fl-dl-progress {
  width: 100%;
  height: 6px;
  border: 0;
  border-radius: 999px;
  background: var(--hover-bg);
  overflow: hidden;
}
.fl-dl-progress::-webkit-progress-bar { background: var(--hover-bg); border-radius: 999px; }
.fl-dl-progress::-webkit-progress-value {
  background: var(--fg);
  border-radius: 999px;
  transition: width .3s var(--ease-ios);
}
.fl-dl-progress::-moz-progress-bar { background: var(--fg); border-radius: 999px; }

.fl-dl-status { margin: 0; font-size: 13px; color: var(--muted); }
.fl-dl-status[data-state="error"] { color: #b91c1c; }
html[data-theme="dark"] .fl-dl-status[data-state="error"] { color: #f87171; }

.fl-dl-sha { font-size: 13px; color: var(--muted); }
.fl-dl-sha summary { cursor: pointer; list-style: none; }
.fl-dl-sha summary::-webkit-details-marker { display: none; }
.fl-dl-sha summary::after { content: " ›"; }
.fl-dl-sha[open] summary::after { content: " ⌄"; }
.fl-dl-sha code {
  display: block;
  margin-top: 10px;
  padding: 9px 11px;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.5;
  color: var(--fg-2);
  word-break: break-all;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.fl-notes { display: grid; gap: 10px; margin-top: 26px; }
.fl-note {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin: 0;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--muted);
}
.fl-note svg { width: 16px; height: 16px; flex: 0 0 auto; margin-top: 3px; }

/* ---------- 功能 ---------- */
.fl-feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.fl-feature {
  padding: 26px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}
.fl-feature h3 { margin: 16px 0 8px; font-size: 16px; }
.fl-feature p { margin: 0; font-size: 14px; line-height: 1.65; color: var(--muted); }

.fl-ico {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  color: var(--fg-2);
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 11px;
}
.fl-ico svg { width: 19px; height: 19px; }

/* ---------- 安装步骤 + 系统要求 ---------- */
.fl-split {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 56px;
  align-items: start;
}
.fl-split h2 { font-size: clamp(26px, 3vw, 34px); margin: 10px 0 0; }

.fl-steps {
  counter-reset: fl-step;
  display: grid;
  gap: 16px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}
.fl-steps li {
  counter-increment: fl-step;
  position: relative;
  padding-left: 46px;
  font-size: 15px;
  line-height: 1.6;
  color: var(--fg-2);
}
.fl-steps li::before {
  content: counter(fl-step);
  position: absolute;
  left: 0;
  top: -1px;
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  color: var(--fg);
  border: 1px solid var(--border-strong);
  border-radius: 50%;
}

.fl-req-card {
  padding: 28px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}
.fl-req-card h3 { margin: 0 0 18px; font-size: 16px; }

.fl-req { display: grid; gap: 12px; margin: 0; padding: 0; list-style: none; }
.fl-req li {
  position: relative;
  padding-left: 26px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--muted);
}
.fl-req li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .5em;
  width: 12px;
  height: 7px;
  border-left: 2px solid var(--fg-2);
  border-bottom: 2px solid var(--fg-2);
  transform: rotate(-45deg);
}

/* ---------- FAQ ---------- */
.fl-faq { display: grid; gap: 12px; }

.fl-faq-item {
  padding: 18px 22px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}
.fl-faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 15px;
  font-weight: 500;
  list-style: none;
  cursor: pointer;
}
.fl-faq-item summary::-webkit-details-marker { display: none; }
.fl-faq-item summary::after {
  content: "+";
  font-size: 18px;
  font-weight: 400;
  color: var(--muted);
  transition: transform .3s var(--ease-ios);
}
.fl-faq-item[open] summary::after { content: "−"; }
.fl-faq-item p {
  margin: 14px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.fl-disclaimer { margin: 0 auto 72px; }

@media (max-width: 960px) {
  .fl-feature-grid { grid-template-columns: repeat(2, 1fr); }
  .fl-split { grid-template-columns: 1fr; gap: 36px; }
}

@media (max-width: 720px) {
  .fl-dl-grid,
  .fl-shots,
  .fl-feature-grid { grid-template-columns: 1fr; }
  .fl-dl-card,
  .fl-feature,
  .fl-req-card { padding: 22px; }
  .fl-shot img { border-radius: var(--radius-md); }
}

/* 下载卡：提取码一行（蓝奏云分享） */
.fl-dl-pass {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-size: 13px;
  color: var(--muted);
}

.fl-dl-pass code {
  padding: 3px 9px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--fg);
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 6px;
}

.fl-copy {
  padding: 3px 11px;
  font: inherit;
  font-size: 12px;
  color: var(--fg-2);
  background: transparent;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  cursor: pointer;
  transition: background-color .2s var(--ease-ios), color .2s var(--ease-ios);
}
.fl-copy:hover { background: var(--hover-bg); }
.fl-copy:disabled { color: var(--muted); cursor: default; }