/* ============================================================
   Kids 工具站 — 全局样式表
   kids.yuwostudio.com
   ============================================================ */

/* ---- CSS 变量 ---- */
:root {
  /* 主色 */
  --kids-primary: #2f6fed;
  --kids-primary-dark: #1d4fc4;
  --kids-primary-light: #e5efff;
  --kids-accent: #e8b04c;

  /* 分类辅助色 */
  --kids-cat-learn: #cc6d2d;
  --kids-cat-learn-light: #fff2e4;
  --kids-cat-write: #4f9579;
  --kids-cat-write-light: #edf8f3;
  --kids-cat-listen: #4f7fb5;
  --kids-cat-listen-light: #edf4fc;
  --kids-cat-life: #c18d2f;
  --kids-cat-life-light: #fff7e7;

  /* 中性色 */
  --kids-bg: #f6f1e7;
  --kids-bg-alt: #fbf8f1;
  --kids-panel: rgba(255, 252, 246, 0.92);
  --kids-text: #213047;
  --kids-text-secondary: #5f6f86;
  --kids-text-muted: #92a0b2;
  --kids-border: #d9deea;
  --kids-border-light: #e8ebf2;

  /* 阴影 */
  --kids-shadow-sm: 0 10px 24px rgba(36, 48, 71, 0.06);
  --kids-shadow: 0 18px 40px rgba(36, 48, 71, 0.08);
  --kids-shadow-md: 0 24px 48px rgba(36, 48, 71, 0.10);
  --kids-shadow-lg: 0 28px 80px rgba(36, 48, 71, 0.12);

  /* 圆角 */
  --kids-radius-sm: 6px;
  --kids-radius: 8px;
  --kids-radius-lg: 12px;
  --kids-radius-xl: 16px;

  /* 字体 */
  --kids-font: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'PingFang SC',
               'Hiragino Sans GB', 'Microsoft YaHei',
               sans-serif;
  --kids-font-display: 'Noto Serif SC', 'Songti SC', 'STSong', serif;
  --kids-font-mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;

  /* 过渡 */
  --kids-transition: 0.2s ease;
}

/* ---- Reset & 基础排版 ---- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--kids-font);
  color: var(--kids-text);
  background:
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.8), transparent 28%),
    radial-gradient(circle at top right, rgba(229, 239, 255, 0.7), transparent 24%),
    linear-gradient(180deg, #f7f3ea 0%, #f5efe3 55%, #f7f4ed 100%);
  line-height: 1.6;
  min-height: 100vh;
}

.kids-page {
  position: relative;
}

.kids-page::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: linear-gradient(rgba(33, 48, 71, 0.02) 1px, transparent 1px);
  background-size: 100% 36px;
  pointer-events: none;
  opacity: 0.5;
}

a {
  color: var(--kids-primary);
  text-decoration: none;
  transition: color var(--kids-transition);
}
a:hover {
  color: var(--kids-primary-dark);
}

img {
  max-width: 100%;
  display: block;
}

/* ---- 导航栏 ---- */
.kids-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  background: rgba(251, 248, 241, 0.82);
  border-bottom: 1px solid rgba(217, 222, 234, 0.85);
  backdrop-filter: blur(14px);
  position: sticky;
  top: 0;
  z-index: 200;
}

.kids-nav__back {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 15px;
  color: var(--kids-text-secondary);
  transition: color var(--kids-transition);
}
.kids-nav__back:hover {
  color: var(--kids-primary);
}
.kids-nav__back svg {
  width: 16px;
  height: 16px;
}

.kids-nav__logo {
  font-size: 20px;
  font-weight: 800;
  font-family: var(--kids-font-display);
  color: var(--kids-primary);
  letter-spacing: -0.02em;
}
.kids-nav__logo span {
  color: var(--kids-text);
}

/* ---- 容器 ---- */
.kids-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---- 工具页双布局 ---- */
.tool-layout {
  display: flex;
  flex-direction: column;
  gap: 30px;
  padding: 12px 0 36px;
}

/* 控制区 */
.tool-controls {
  background: var(--kids-panel);
  border-radius: 24px;
  padding: 24px;
  border: 1px solid rgba(217, 222, 234, 0.9);
  box-shadow: var(--kids-shadow-sm);
}

/* 预览区 */
.tool-preview {
  background: linear-gradient(180deg, rgba(248, 250, 255, 0.96), rgba(255, 252, 246, 0.98));
  border-radius: 28px;
  padding: 20px;
  border: 1px solid rgba(217, 222, 234, 0.9);
  box-shadow: var(--kids-shadow);
  min-height: 400px;
}

/* 预览区内的 A4 纸模拟 */
.tool-preview__paper {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.7), rgba(248, 250, 255, 0.86));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8);
  border-radius: 18px;
  width: 100%;
  max-width: 780px;
  margin: 0 auto;
  padding: 16px;
  max-height: 980px;
  overflow-x: hidden;
  overflow-y: auto;
  border: 1px solid rgba(217, 222, 234, 0.82);
}

.tool-preview__paper > * {
  display: block;
  width: min(100%, 210mm);
  margin: 0 auto;
}

.preview-placeholder {
  min-height: 720px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  border-radius: 12px;
  border: 1px dashed rgba(217, 222, 234, 0.95);
  background: rgba(255, 255, 255, 0.92);
  color: var(--kids-text-muted);
  font-size: 16px;
  line-height: 1.8;
  text-align: center;
}

/* 操作栏 */
.tool-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.tool-actions--spaced {
  margin-top: 12px;
}

/* ---- 桌面端双栏布局 ---- */
@media (min-width: 768px) {
  .tool-layout {
    flex-direction: row;
    align-items: flex-start;
    padding: 18px 0 42px;
  }

  .tool-controls {
    width: 380px;
    flex-shrink: 0;
    position: sticky;
    top: 92px;
    max-height: calc(100vh - 120px);
    overflow-y: auto;
  }

  .tool-preview {
    flex: 1;
    min-width: 0;
  }
}

/* ---- 卡片 ---- */
.kids-card {
  background: rgba(255, 252, 246, 0.95);
  border-radius: 24px;
  border: 1px solid rgba(217, 222, 234, 0.92);
  padding: 20px;
  box-shadow: var(--kids-shadow-sm);
  transition: box-shadow var(--kids-transition), transform var(--kids-transition), border-color var(--kids-transition);
}
.kids-card:hover {
  box-shadow: var(--kids-shadow);
  transform: translateY(-3px);
  border-color: rgba(47, 111, 237, 0.28);
}

.kids-card--link {
  display: block;
  color: inherit;
  text-decoration: none;
  cursor: pointer;
}

/* ---- 按钮 ---- */
.kids-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 600;
  font-family: var(--kids-font);
  border: none;
  border-radius: 999px;
  cursor: pointer;
  transition: all var(--kids-transition);
  line-height: 1.4;
}

.kids-btn--primary {
  background: linear-gradient(135deg, var(--kids-primary), #457bea);
  color: #fff;
}
.kids-btn--primary:hover {
  background: var(--kids-primary-dark);
  box-shadow: 0 16px 30px rgba(47, 111, 237, 0.22);
}

.kids-btn--secondary {
  background: rgba(255, 255, 255, 0.7);
  color: var(--kids-text);
  border: 1px solid rgba(217, 222, 234, 0.95);
}
.kids-btn--secondary:hover {
  background: rgba(255, 255, 255, 1);
}

.kids-btn--ghost {
  background: transparent;
  color: var(--kids-text);
  border: 1px solid rgba(33, 48, 71, 0.12);
}

.kids-btn--ghost:hover {
  background: rgba(255, 255, 255, 0.64);
}

.kids-btn--icon {
  padding: 10px;
  background: transparent;
  color: var(--kids-text-secondary);
}
.kids-btn--icon:hover {
  color: var(--kids-primary);
  background: var(--kids-primary-light);
}

.kids-btn--block {
  width: 100%;
}

.kids-btn--lg {
  padding: 14px 28px;
  font-size: 16px;
}

.kids-btn--hero {
  min-height: 52px;
  padding-inline: 24px;
}

/* ---- 键盘焦点可视化（提升无障碍） ---- */
.kids-btn:focus-visible,
.kids-nav__back:focus-visible,
.kids-nav__logo:focus-visible,
.kids-tool-card--link:focus-visible,
.kids-faq__question:focus-visible,
.kids-feedback__toggle:focus-visible,
.kids-collapse__trigger:focus-visible {
  outline: 3px solid rgba(14, 165, 233, 0.35);
  outline-offset: 2px;
}

/* 自定义单选/多选：键盘聚焦显示在 label 上 */
.kids-radio-btn input:focus-visible + label,
.kids-check-btn input:focus-visible + label {
  outline: 3px solid rgba(14, 165, 233, 0.35);
  outline-offset: 2px;
}

/* ---- 禁用态 ---- */
.kids-btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}
.kids-btn:disabled:hover {
  box-shadow: none;
}

@media (prefers-reduced-motion: reduce) {
  .kids-card,
  .kids-btn,
  .kids-card:hover,
  .kids-collapse__trigger svg {
    transition: none !important;
  }
  .kids-card:hover {
    transform: none !important;
  }
}

/* ---- 表单控件 ---- */
.kids-form-group {
  margin-bottom: 16px;
}

.kids-form-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.kids-form-grid {
  display: grid;
  gap: 12px;
}

@media (min-width: 520px) {
  .kids-form-grid--2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.kids-form-separator {
  color: var(--kids-text-muted);
}

.kids-input--compact {
  width: 80px;
}

.kids-checkbox-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  cursor: pointer;
}

.kids-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--kids-text);
  margin-bottom: 6px;
}

.kids-label--hint {
  font-weight: 400;
  color: var(--kids-text-muted);
  margin-left: 4px;
}

.kids-select,
.kids-input,
.kids-textarea,
.kids-feedback__textarea {
  width: 100%;
  padding: 8px 12px;
  font-size: 14px;
  font-family: var(--kids-font);
  color: var(--kids-text);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(217, 222, 234, 0.95);
  border-radius: 16px;
  transition: border-color var(--kids-transition), box-shadow var(--kids-transition);
  outline: none;
}
.kids-select:focus,
.kids-input:focus,
.kids-textarea:focus,
.kids-feedback__textarea:focus {
  border-color: var(--kids-primary);
  box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.15);
}

.kids-textarea {
  min-height: 92px;
  resize: vertical;
}

.kids-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%2364748B' viewBox='0 0 16 16'%3E%3Cpath d='M4.5 6l3.5 4 3.5-4z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  padding-right: 32px;
}

/* 单选按钮组 */
.kids-radio-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.kids-radio-btn {
  position: relative;
}
.kids-radio-btn input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}
.kids-radio-btn label {
  display: inline-flex;
  align-items: center;
  padding: 10px 16px;
  font-size: 13px;
  font-weight: 500;
  color: var(--kids-text-secondary);
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(217, 222, 234, 0.95);
  border-radius: 999px;
  cursor: pointer;
  transition: all var(--kids-transition);
}
.kids-radio-btn input:checked + label {
  background: linear-gradient(135deg, var(--kids-primary-light), rgba(255, 255, 255, 0.98));
  color: var(--kids-primary-dark);
  border-color: rgba(47, 111, 237, 0.42);
  box-shadow: inset 0 0 0 1px rgba(47, 111, 237, 0.08);
}
.kids-radio-btn label:hover {
  border-color: var(--kids-primary);
}

/* 多选按钮组 */
.kids-check-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.kids-check-btn {
  position: relative;
}
.kids-check-btn input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}
.kids-check-btn label {
  display: inline-flex;
  align-items: center;
  padding: 10px 16px;
  font-size: 13px;
  font-weight: 500;
  color: var(--kids-text-secondary);
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(217, 222, 234, 0.95);
  border-radius: 999px;
  cursor: pointer;
  transition: all var(--kids-transition);
}
.kids-check-btn input:checked + label {
  background: var(--kids-primary-light);
  color: var(--kids-primary-dark);
  border-color: var(--kids-primary);
}
.kids-check-btn label:hover {
  border-color: var(--kids-primary);
}

/* 折叠面板 */
.kids-collapse {
  border: 1px solid rgba(217, 222, 234, 0.95);
  border-radius: 18px;
  margin-top: 12px;
  background: rgba(250, 246, 237, 0.75);
}

.kids-collapse__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 10px 14px;
  font-size: 13px;
  font-weight: 600;
  color: var(--kids-text-secondary);
  background: var(--kids-bg-alt);
  border: none;
  border-radius: 18px;
  cursor: pointer;
  transition: color var(--kids-transition);
  font-family: var(--kids-font);
}
.kids-collapse__trigger:hover {
  color: var(--kids-primary);
}
.kids-collapse__trigger svg {
  width: 16px;
  height: 16px;
  transition: transform var(--kids-transition);
}
.kids-collapse[open] .kids-collapse__trigger svg {
  transform: rotate(180deg);
}

.kids-collapse__body {
  padding: 14px;
}

/* ---- 分隔线 ---- */
.kids-divider {
  border: none;
  border-top: 1px solid var(--kids-border-light);
  margin: 16px 0;
}

/* ---- Section 标题 ---- */
.kids-section-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--kids-text);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.kids-helper {
  margin-top: 6px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--kids-text-muted);
}

.kids-inline-badge {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(47, 111, 237, 0.08);
  color: var(--kids-primary-dark);
  font-size: 12px;
  font-weight: 700;
}

/* ---- 反馈表单 ---- */
.kids-feedback {
  margin-top: 32px;
  padding: 24px;
  background: rgba(255, 252, 246, 0.94);
  border-radius: 24px;
  border: 1px solid rgba(217, 222, 234, 0.95);
  box-shadow: var(--kids-shadow-sm);
}

.kids-feedback__toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--kids-text-secondary);
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--kids-font);
  padding: 0;
  transition: color var(--kids-transition);
}
.kids-feedback__toggle:hover {
  color: var(--kids-primary);
}

.kids-feedback__form {
  display: none;
  margin-top: 16px;
}
.kids-feedback__form.is-open {
  display: block;
}

.kids-feedback__textarea {
  min-height: 80px;
}

/* ---- 分享按钮 ---- */
.kids-share-btn {
  position: relative;
}

.kids-share-toast {
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  padding: 6px 12px;
  font-size: 12px;
  color: #fff;
  background: var(--kids-text);
  border-radius: var(--kids-radius-sm);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
  margin-bottom: 6px;
}
.kids-share-toast.is-visible {
  opacity: 1;
}

/* ---- 品牌 Footer ---- */
.kids-footer {
  margin-top: 64px;
  border-top: 1px solid rgba(217, 222, 234, 0.74);
  background:
    linear-gradient(180deg, rgba(248, 243, 233, 0.86), rgba(255, 252, 246, 0.98)),
    radial-gradient(circle at top left, rgba(47, 111, 237, 0.08), transparent 32%);
}

.kids-footer__inner {
  display: grid;
  gap: 28px;
  padding: 34px 24px 28px;
}

.kids-footer__brandblock {
  max-width: 30rem;
}

.kids-footer__logo {
  display: inline-flex;
  align-items: center;
  font-family: var(--kids-font-display);
  font-size: 24px;
  font-weight: 800;
  color: var(--kids-text);
}

.kids-footer__desc {
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--kids-text-secondary);
}

.kids-footer__links {
  display: grid;
  gap: 20px;
}

.kids-footer__group {
  display: grid;
  gap: 10px;
  align-content: start;
}

.kids-footer__heading {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--kids-text-muted);
}

.kids-footer__group a {
  color: var(--kids-text-secondary);
  font-size: 14px;
  line-height: 1.6;
}

.kids-footer__group a:hover,
.kids-footer__logo:hover {
  color: var(--kids-primary);
}

.kids-footer__bottom {
  border-top: 1px solid rgba(217, 222, 234, 0.74);
}

.kids-footer__bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 16px 24px 24px;
  font-size: 12px;
  color: var(--kids-text-muted);
}

@media (min-width: 840px) {
  .kids-footer__inner {
    grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
    align-items: start;
  }

  .kids-footer__links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 639px) {
  .kids-footer__bottom-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ---- FAQ 模块 ---- */
.kids-faq {
  margin-top: 40px;
  padding: 0 20px 40px;
}

.kids-faq__title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 16px;
}

.kids-faq__item {
  border-bottom: 1px solid var(--kids-border-light);
}

.kids-faq__question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 14px 0;
  font-size: 14px;
  font-weight: 600;
  color: var(--kids-text);
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-family: var(--kids-font);
}

.kids-faq__answer {
  padding: 0 0 14px;
  font-size: 14px;
  color: var(--kids-text-secondary);
  line-height: 1.7;
  display: none;
}

.kids-faq__item.is-open .kids-faq__answer {
  display: block;
}

/* ---- 工具描述区 ---- */
.kids-tool-intro {
  max-width: 860px;
  margin: 0 auto;
  padding: 30px 20px 0;
  font-size: 15px;
  color: var(--kids-text-secondary);
  line-height: 1.95;
}

/* ---- 首页专属样式 ---- */
.kids-home {
  position: relative;
}

.kids-home-hero {
  padding: 30px 0 16px;
}

.kids-home-hero__inner {
  display: grid;
  gap: 28px;
}

.kids-home-hero__content {
  padding: 8px 0 0;
}

.kids-home-hero__eyebrow,
.kids-home-sectionhead__eyebrow,
.kids-tool-hero__eyebrow,
.kids-workbench-card__eyebrow,
.kids-preview-panel__eyebrow {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--kids-text-muted);
  margin-bottom: 14px;
}

.kids-home-hero__title {
  font-family: var(--kids-font-display);
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1.12;
  letter-spacing: -0.04em;
  color: var(--kids-text);
  max-width: 7.4em;
}

.kids-home-hero__subtitle {
  max-width: 34rem;
  font-size: 15px;
  line-height: 1.75;
  color: var(--kids-text-secondary);
  margin-top: 14px;
}

.kids-home-hero__highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
  list-style: none;
}

.kids-home-hero__highlight {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid rgba(217, 222, 234, 0.95);
  font-size: 13px;
  font-weight: 700;
  color: var(--kids-text-secondary);
  box-shadow: var(--kids-shadow-sm);
}

.kids-home-primary-tool {
  display: block;
  padding: 16px 18px;
  border-radius: 22px;
  background: linear-gradient(135deg, rgba(46, 111, 237, 0.12), rgba(255, 252, 246, 0.96));
  border: 1px solid rgba(47, 111, 237, 0.18);
  box-shadow: var(--kids-shadow-sm);
  color: inherit;
}

.kids-home-primary-tool__badge {
  display: inline-flex;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.85);
  color: var(--kids-primary-dark);
  font-size: 12px;
  font-weight: 700;
}

.kids-home-primary-tool__title {
  display: block;
  margin-top: 10px;
  font-family: var(--kids-font-display);
  font-size: 23px;
  line-height: 1.12;
}

.kids-home-primary-tool__desc {
  margin-top: 8px;
  font-size: 14px;
  color: var(--kids-text-secondary);
}

.kids-home-directory {
  padding: 10px 0 4px;
}

.kids-home-sectionhead {
  display: block;
  margin-bottom: 18px;
}

.kids-home-sectionhead--compact {
  margin-bottom: 20px;
}

.kids-home-sectionhead__title {
  font-family: var(--kids-font-display);
  font-size: clamp(1.8rem, 3vw, 2.7rem);
  line-height: 1.22;
  letter-spacing: -0.03em;
}

.kids-home-sectionhead__desc {
  max-width: 48rem;
  font-size: 15px;
  line-height: 1.75;
  color: var(--kids-text-secondary);
  margin-top: 10px;
}

.kids-category {
  margin-bottom: 18px;
  padding: 14px 0 18px;
  border-radius: 0;
  background: transparent;
  border: none;
  border-top: 1px solid rgba(217, 222, 234, 0.7);
}

.kids-category__header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  padding-left: 2px;
}

.kids-category__icon {
  font-size: 20px;
}

.kids-category__name {
  font-size: 18px;
  font-weight: 700;
  color: var(--kids-text);
}

.kids-category__grid {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

@media (min-width: 960px) {
  .kids-category {
    display: grid;
    grid-template-columns: 180px minmax(0, 1fr);
    gap: 18px;
    align-items: start;
  }

  .kids-category__header {
    margin-bottom: 0;
    padding-top: 12px;
  }
}

/* 工具卡片 */
.kids-tool-card {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 18px;
  width: min(100%, 360px);
}

.kids-tool-card__icon {
  width: 50px;
  height: 50px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}

.kids-tool-card__icon--learn {
  background: var(--kids-cat-learn-light);
  color: var(--kids-cat-learn);
}

.kids-tool-card__icon--write {
  background: var(--kids-cat-write-light);
  color: var(--kids-cat-write);
}

.kids-tool-card__icon--listen {
  background: var(--kids-cat-listen-light);
  color: var(--kids-cat-listen);
}

.kids-tool-card__icon--life {
  background: var(--kids-cat-life-light);
  color: var(--kids-cat-life);
}

.kids-tool-card__info {
  flex: 1;
  min-width: 0;
}

.kids-tool-card__name {
  font-size: 18px;
  font-weight: 700;
  color: var(--kids-text);
  margin-bottom: 6px;
}

.kids-tool-card__desc {
  font-size: 14px;
  color: var(--kids-text-secondary);
  line-height: 1.75;
}

/* 即将上线 */
.kids-tool-card--soon {
  opacity: 0.5;
  pointer-events: none;
}
.kids-tool-card--soon .kids-tool-card__name::after {
  content: '即将上线';
  display: inline-block;
  font-size: 11px;
  font-weight: 500;
  color: var(--kids-text-muted);
  background: var(--kids-bg-alt);
  border: 1px solid var(--kids-border);
  border-radius: 10px;
  padding: 1px 8px;
  margin-left: 8px;
  vertical-align: middle;
}

/* ---- 通用工具 ---- */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

.kids-page-title {
  text-align: center;
  padding: 20px 0 4px;
}

.kids-page-title__heading {
  font-size: 24px;
  font-weight: 800;
  color: var(--kids-text);
}

.kids-tool-shell {
  padding-top: 18px;
}

.kids-tool-hero {
  display: grid;
  gap: 18px;
  margin-bottom: 18px;
}

.kids-tool-hero__title {
  font-family: var(--kids-font-display);
  font-size: clamp(1.9rem, 3.4vw, 3rem);
  line-height: 1.18;
  letter-spacing: -0.03em;
}

.kids-tool-hero__subtitle {
  max-width: 42rem;
  color: var(--kids-text-secondary);
  font-size: 16px;
  line-height: 1.8;
}

.kids-tool-hero__facts {
  display: grid;
  gap: 14px;
}

.kids-tool-hero__facts--compact {
  gap: 10px;
  align-content: center;
  align-items: stretch;
}

.kids-tool-hero__facts--compact .kids-tool-fact {
  height: 100%;
  padding: 10px 14px;
  border-radius: 16px;
}

.kids-tool-hero__facts--compact .kids-tool-fact__label {
  margin-bottom: 4px;
}

.kids-tool-hero__facts--compact .kids-tool-fact__value {
  font-size: 16px;
}

.kids-tool-fact {
  background: rgba(255, 252, 246, 0.76);
  border: 1px solid rgba(217, 222, 234, 0.82);
  border-radius: 20px;
  padding: 14px 16px;
}

.kids-tool-fact__label {
  display: block;
  color: var(--kids-text-muted);
  font-size: 12px;
  margin-bottom: 6px;
}

.kids-tool-fact__value {
  font-size: 18px;
  color: var(--kids-text);
}

.kids-workbench-card {
  padding-bottom: 14px;
}

.kids-workbench-status {
  margin-top: 14px;
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(47, 111, 237, 0.08);
  color: var(--kids-primary-dark);
  font-size: 13px;
  font-weight: 700;
}

.kids-workbench-card__title,
.kids-preview-panel__title {
  font-family: var(--kids-font-display);
  font-size: 22px;
  line-height: 1.25;
}

.kids-workbench-card__desc,
.kids-preview-panel__note {
  margin-top: 10px;
  color: var(--kids-text-secondary);
  font-size: 14px;
  line-height: 1.8;
}

.kids-preview-panel__header {
  display: grid;
  gap: 12px;
  padding: 6px 4px 14px;
}

.kids-preview-panel__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 16px;
}

.kids-preview-panel__badge {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(217, 222, 234, 0.95);
  color: var(--kids-text-secondary);
  font-size: 12px;
  font-weight: 700;
}

.kids-preview-panel__badge.is-ready {
  background: rgba(47, 111, 237, 0.1);
  color: var(--kids-primary-dark);
  border-color: rgba(47, 111, 237, 0.2);
}

@media (min-width: 900px) {
  .kids-tool-hero {
    grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
    align-items: center;
  }

  .kids-tool-hero__facts--compact {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: center;
  }
}

/* ---- 站点信息页 ---- */
.kids-site-shell {
  padding-top: 24px;
}

.kids-site-header {
  max-width: 760px;
  margin: 0 auto 22px;
  padding: 0 20px;
}

.kids-site-header__eyebrow {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--kids-text-muted);
  margin-bottom: 14px;
}

.kids-site-header__title {
  font-family: var(--kids-font-display);
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.14;
  letter-spacing: -0.04em;
}

.kids-site-header__desc {
  margin-top: 14px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--kids-text-secondary);
}

.kids-site-grid {
  max-width: 960px;
  margin: 0 auto;
  display: grid;
  gap: 16px;
  padding: 0 20px;
}

.kids-site-grid--two {
  align-items: start;
}

.kids-site-card {
  background: rgba(255, 252, 246, 0.95);
  border-radius: 26px;
  border: 1px solid rgba(217, 222, 234, 0.95);
  padding: 24px;
  box-shadow: var(--kids-shadow-sm);
}

.kids-site-card__title {
  font-family: var(--kids-font-display);
  font-size: 24px;
  line-height: 1.2;
  margin-bottom: 12px;
}

.kids-site-card p {
  color: var(--kids-text-secondary);
  line-height: 1.85;
}

.kids-site-card p + p {
  margin-top: 12px;
}

.kids-site-list {
  list-style: none;
  display: grid;
  gap: 12px;
}

.kids-site-list li {
  position: relative;
  padding-left: 18px;
  color: var(--kids-text-secondary);
  line-height: 1.8;
}

.kids-site-list li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--kids-accent);
}

.kids-site-meta {
  display: grid;
  gap: 10px;
}

.kids-site-meta a {
  color: var(--kids-primary-dark);
}

@media (min-width: 900px) {
  .kids-site-grid--two {
    grid-template-columns: minmax(0, 1fr) minmax(280px, 0.72fr);
  }
}

@media (min-width: 768px) {
  .tool-layout {
    display: grid;
    grid-template-columns: 360px minmax(0, 1fr);
    align-items: start;
  }

  .tool-controls {
    width: auto;
    position: static;
    max-height: none;
    overflow: visible;
  }

  .tool-preview {
    min-width: 0;
  }
}