/* 首页：现代教育品牌落地页 */

/* 主题默认 .md-main__inner { margin-top: 1.5rem } 会在顶栏与正文间留出约 1cm 空白 */
.md-main:has(.xhh-home) .md-main__inner {
  margin-top: 0;
}

.md-content__inner:has(.xhh-home) {
  margin-top: 0;
  padding: 0;
  max-width: none;
}

.xhh-home {
  --xhh-max: 72rem;
  --xhh-pad: clamp(1.25rem, 4vw, 2rem);
  color: var(--xhh-text);
  margin: 0;
}

/*
 * 仅背景色左右贯穿视口：用 ::before 铺底，不改动 section 的 margin/padding/width。
 * 祖先容器保持 overflow: visible，避免裁切全宽背景层。
 */
.md-main:has(.xhh-home),
.md-main:has(.xhh-home) .md-main__inner,
.md-main:has(.xhh-home) .md-content,
.md-content__inner:has(.xhh-home),
.xhh-home {
  overflow-x: visible;
}

html:has(.xhh-home) {
  overflow-x: hidden;
}

.xhh-home > section:is(.xhh-hero, .xhh-stats-bar, .xhh-cta, .xhh-section--surface),
.xhh-home-ext > section.xhh-cta {
  position: relative;
  isolation: isolate;
}

.xhh-home > section:is(.xhh-hero, .xhh-stats-bar, .xhh-cta, .xhh-section--surface)::before,
.xhh-home-ext > section.xhh-cta::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 100vw;
  margin-left: -50vw;
  pointer-events: none;
}

.xhh-home .md-typeset h2 {
  font-size: clamp(1.35rem, 2.5vw, 1.75rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--xhh-text);
  margin-bottom: 0.5rem;
}

.xhh-home .md-typeset h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--xhh-text);
}

.xhh-home .md-typeset p {
  color: var(--xhh-muted);
  line-height: 1.7;
}

/* ---------- 通用组件 ---------- */
.xhh-wrap {
  width: min(var(--xhh-max), 100% - 2 * var(--xhh-pad));
  margin-inline: auto;
}

.xhh-eyebrow {
  display: inline-block;
  margin-bottom: 0.75rem;
  padding: 0.35rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: none;
  color: var(--md-primary-fg-color--dark);
  background: color-mix(in srgb, var(--md-primary-fg-color) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--md-primary-fg-color) 25%, transparent);
  border-radius: 999px;
}

[data-md-color-scheme="slate"] .xhh-eyebrow {
  color: var(--md-primary-fg-color--light);
}

.xhh-section-head {
  text-align: center;
  max-width: 40rem;
  margin: 0 auto 1.75rem;
}

/* 去掉 eyebrow 后，避免标题区仍留过大上沿空白 */
.xhh-section-head h2,
.xhh-home-ext .xhh-section-head h2 {
  margin-top: 0;
}

.xhh-section-head p {
  margin: 0;
}

.xhh-section {
  padding: clamp(2.25rem, 4.5vw, 3.5rem) 0 clamp(2.75rem, 5vw, 4rem);
}

/* 统计条与首个内容区块之间略收紧 */
.xhh-stats-bar + .xhh-section {
  padding-top: clamp(1.75rem, 3.5vw, 2.75rem);
}

.xhh-section--surface {
  background: none;
  border-block: none;
}

.xhh-home > section.xhh-section--surface::before {
  background: var(--xhh-surface);
  border-block: 1px solid var(--xhh-border);
}

/* ---------- Hero：左右分栏 ---------- */
.xhh-hero {
  padding: clamp(1.75rem, 4vw, 3rem) 0 clamp(0.75rem, 2vw, 1.25rem);
  background: none;
}

.xhh-hero::before {
  background:
    radial-gradient(ellipse 80% 60% at 100% 0%, color-mix(in srgb, var(--md-primary-fg-color) 8%, transparent), transparent 55%),
    radial-gradient(ellipse 60% 50% at 0% 100%, color-mix(in srgb, var(--md-primary-fg-color) 6%, transparent), transparent 50%),
    var(--md-default-bg-color);
}

.xhh-hero__grid {
  display: grid;
  gap: clamp(1.5rem, 3vw, 2.5rem);
  align-items: center;
}

@media (min-width: 60em) {
  .xhh-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: clamp(2rem, 4vw, 3.5rem);
  }
}

.xhh-hero__content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: left;
}

.xhh-hero h1 {
  margin: 0 0 0.85rem;
  font-size: clamp(1.75rem, 3.8vw, 2.65rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.03em;
  color: var(--xhh-text);
  border: none;
  max-width: 12em;
}

.xhh-hero h1 .headerlink {
  display: none;
}

.xhh-hero__lead {
  margin: 0 0 1.5rem;
  max-width: 32em;
  font-size: clamp(0.95rem, 1.6vw, 1.05rem);
  line-height: 1.7;
  color: var(--xhh-muted);
}

.xhh-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  align-items: center;
  margin-bottom: 0.25rem;
}

.xhh-hero__actions .md-button {
  margin: 0;
  border-radius: 999px;
  padding: 0.6em 1.35em;
  font-weight: 600;
  font-size: 0.9rem;
}

.xhh-hero__actions .md-button--primary {
  padding: 0.7em 1.6em;
  font-size: 0.95rem;
  box-shadow: 0 4px 14px color-mix(in srgb, var(--md-primary-fg-color) 35%, transparent);
}

.xhh-hero__actions .md-button--secondary {
  color: var(--xhh-text);
  background: var(--xhh-surface-elevated);
  border: 1px solid var(--xhh-border);
}

.xhh-hero__actions .md-button--secondary:hover {
  border-color: color-mix(in srgb, var(--md-primary-fg-color) 45%, var(--xhh-border));
  background: color-mix(in srgb, var(--md-primary-fg-color) 6%, var(--xhh-surface-elevated));
}

[data-md-color-scheme="slate"] .xhh-hero__actions .md-button--secondary {
  color: var(--xhh-text);
}

.xhh-hero__visual {
  position: relative;
  margin-inline: auto;
  max-width: 34rem;
}

@media (min-width: 60em) {
  .xhh-hero__visual {
    max-width: none;
    margin-inline: 0;
  }
}

.xhh-hero__visual img {
  display: block;
  width: 100%;
  height: auto;
  max-height: min(52vh, 26rem);
  object-fit: contain;
  border-radius: var(--xhh-radius-lg);
  border: 1px solid var(--xhh-border);
  box-shadow: var(--xhh-shadow-lg);
}

.xhh-hero__visual::before {
  content: "";
  position: absolute;
  inset: -6% -5% -8% -5%;
  background: linear-gradient(
    135deg,
    color-mix(in srgb, var(--md-primary-fg-color) 14%, transparent),
    transparent 65%
  );
  border-radius: 24px;
  z-index: -1;
}

/* ---------- 统计条（Hero 下方） ---------- */
.xhh-stats-bar {
  padding: clamp(1.5rem, 3.5vw, 2.25rem) 0 clamp(1.125rem, 2vw, 1.5rem);
  margin-top: 0;
  background: none;
}

.xhh-stats-bar::before {
  background: var(--md-default-bg-color);
}

.xhh-stats-bar .xhh-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  margin: 0;
  padding: 0.5rem 0;
  background: var(--xhh-surface-elevated);
  border: 1px solid var(--xhh-border);
  border-radius: var(--xhh-radius-lg);
  box-shadow: var(--xhh-shadow);
  overflow: hidden;
}

@media (min-width: 40em) {
  .xhh-stats-bar .xhh-stats {
    grid-template-columns: repeat(4, 1fr);
  }
}

.xhh-stats-bar .xhh-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 1.35rem 1rem;
  text-align: center;
  background: transparent;
  border: none;
  border-radius: 0;
  box-shadow: none;
}

@media (min-width: 40em) {
  .xhh-stats-bar .xhh-stat:not(:last-child) {
    border-right: 1px solid var(--xhh-border);
  }
}

@media (max-width: 39.99em) {
  .xhh-stats-bar .xhh-stat {
    border-right: 1px solid var(--xhh-border);
    border-bottom: 1px solid var(--xhh-border);
  }

  .xhh-stats-bar .xhh-stat:nth-child(2n) {
    border-right: none;
  }

  .xhh-stats-bar .xhh-stat:nth-child(n + 3) {
    border-bottom: none;
  }
}

.xhh-stat__value {
  font-size: clamp(1.35rem, 2.5vw, 1.65rem);
  font-weight: 800;
  line-height: 1.2;
  color: var(--md-primary-fg-color--dark);
  letter-spacing: -0.02em;
}

[data-md-color-scheme="slate"] .xhh-stat__value {
  color: var(--md-primary-fg-color--light);
}

.xhh-stat__label {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--xhh-muted);
  letter-spacing: 0.02em;
}

/* ---------- 可视化作品展示 ---------- */
.xhh-stats-bar + .xhh-viz-gallery .xhh-wrap::before {
  content: "";
  display: block;
  width: 100%;
  height: 1px;
  margin-bottom: clamp(1.75rem, 3vw, 2.5rem);
  background: var(--xhh-border);
}

.xhh-viz-gallery {
  padding-top: clamp(0.75rem, 1.25vw, 1rem);
  padding-bottom: 2.5rem;
}

.xhh-viz-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 18rem), 1fr));
  gap: 1.25rem;
  margin-top: 1.25rem;
}

.xhh-viz-card {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  padding: 0.65rem;
  text-decoration: none !important;
  color: inherit;
  background: var(--xhh-surface-elevated);
  border: 1px solid var(--xhh-border);
  border-radius: var(--xhh-radius-lg);
  box-shadow: var(--xhh-shadow);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.xhh-viz-card:hover {
  border-color: color-mix(in srgb, var(--md-primary-fg-color) 40%, var(--xhh-border));
  box-shadow: var(--xhh-shadow-lg);
  transform: translateY(-3px);
}

.xhh-viz-card img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: calc(var(--xhh-radius-lg) - 4px);
  border: 1px solid var(--xhh-border);
}

.xhh-viz-card__title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--xhh-text);
  line-height: 1.35;
}

.xhh-viz-card__meta {
  font-size: 0.75rem;
  color: var(--xhh-muted);
  line-height: 1.3;
}

.xhh-viz-card__cta {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--md-primary-fg-color);
}

.xhh-viz-card:hover .xhh-viz-card__cta {
  text-decoration: underline;
}

/* ---------- 能力卡片 ---------- */
.xhh-features .grid.cards {
  margin: 0;
}

.xhh-features .grid.cards > ul {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 17rem), 1fr));
  gap: 1rem;
}

.xhh-features .grid.cards > ul > li {
  margin: 0;
  padding: 1.35rem 1.25rem;
  background: var(--xhh-surface-elevated);
  border: 1px solid var(--xhh-border);
  border-radius: var(--xhh-radius);
  box-shadow: var(--xhh-shadow);
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
}

.xhh-features .grid.cards > ul > li:hover {
  border-color: color-mix(in srgb, var(--md-primary-fg-color) 40%, var(--xhh-border));
  box-shadow: var(--xhh-shadow-lg);
  transform: translateY(-3px);
}

.xhh-features .grid.cards > ul > li > p:first-child {
  font-size: 1rem;
  font-weight: 600;
  color: var(--xhh-text);
}

.xhh-features .grid.cards > ul > li hr {
  margin: 0.65rem 0;
  border-color: var(--xhh-border);
}

/* ---------- 图文展示 ---------- */
.xhh-showcase {
  display: grid;
  gap: 2rem;
  align-items: center;
}

@media (min-width: 60em) {
  .xhh-showcase {
    grid-template-columns: 1fr 1fr;
    gap: 3.5rem;
  }

  .xhh-showcase--reverse .xhh-showcase__media {
    order: 2;
  }
}

.xhh-showcase__body h3 {
  margin-top: 0;
}

.xhh-showcase__body p {
  margin-bottom: 1.25rem;
}

.xhh-showcase__media {
  padding: 0.5rem;
  background: var(--xhh-surface-elevated);
  border: 1px solid var(--xhh-border);
  border-radius: var(--xhh-radius-lg);
  box-shadow: var(--xhh-shadow);
}

.xhh-showcase__media img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: calc(var(--xhh-radius-lg) - 4px);
}

/* 与 showcase 正文单按钮同尺寸（勿用 xhh-hero__actions 大号样式） */
.xhh-showcase__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  align-items: center;
  margin-top: 0.15rem;
}

.xhh-showcase__body .md-button,
.xhh-showcase__actions .md-button {
  margin: 0;
  border-radius: 999px;
  padding: 0.5em 1.1em;
  font-size: 0.82rem;
  font-weight: 600;
  line-height: 1.25;
}

.xhh-showcase__body .md-button--primary,
.xhh-showcase__actions .md-button--primary {
  padding: 0.5em 1.15em;
  box-shadow: 0 2px 8px color-mix(in srgb, var(--md-primary-fg-color) 28%, transparent);
}

.xhh-showcase__actions .md-button--secondary {
  color: var(--xhh-text);
  background: var(--xhh-surface-elevated);
  border: 1px solid var(--xhh-border);
}

.xhh-showcase__actions .md-button--secondary:hover {
  border-color: color-mix(in srgb, var(--md-primary-fg-color) 45%, var(--xhh-border));
  background: color-mix(in srgb, var(--md-primary-fg-color) 6%, var(--xhh-surface-elevated));
}

[data-md-color-scheme="slate"] .xhh-showcase__actions .md-button--secondary {
  color: var(--xhh-text);
}

/* ---------- 项目预览 ---------- */
.xhh-projects .grid.cards > ul {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 15rem), 1fr));
  gap: 1rem;
}

.xhh-projects .grid.cards > ul > li {
  margin: 0;
  padding: 1.25rem;
  background: var(--xhh-surface-elevated);
  border: 1px solid var(--xhh-border);
  border-radius: var(--xhh-radius);
  transition: box-shadow 0.2s, border-color 0.2s;
}

.xhh-projects .grid.cards > ul > li:hover {
  border-color: color-mix(in srgb, var(--md-primary-fg-color) 35%, var(--xhh-border));
  box-shadow: var(--xhh-shadow);
}

.xhh-projects .grid.cards > ul > li > p:first-child {
  font-weight: 600;
  color: var(--xhh-text);
}

.xhh-projects-more {
  display: inline-block;
  margin-top: 1.5rem;
  font-weight: 600;
  color: var(--md-primary-fg-color--dark);
}

[data-md-color-scheme="slate"] .xhh-projects-more {
  color: var(--md-primary-fg-color--light);
}

/* ---------- CTA ---------- */
.xhh-cta {
  padding: clamp(3rem, 6vw, 4.5rem) 0;
  text-align: center;
  background: none;
  border-top: none;
}

.xhh-cta::before {
  background: linear-gradient(180deg, var(--xhh-surface) 0%, var(--md-default-bg-color) 100%);
  border-top: 1px solid var(--xhh-border);
}

.xhh-cta__box {
  max-width: 36rem;
  margin: 0 auto;
  padding: 2.5rem 2rem;
  background: var(--xhh-surface-elevated);
  border: 1px solid var(--xhh-border);
  border-radius: var(--xhh-radius-lg);
  box-shadow: var(--xhh-shadow-lg);
}

.xhh-cta h2 {
  margin-top: 0;
}

.xhh-cta p {
  margin-bottom: 1.5rem;
}

.xhh-cta .md-button {
  border-radius: 999px;
  margin: 0 0.25rem;
}

.xhh-cta__foot {
  display: block;
  margin-top: 1.25rem;
  font-size: 0.9rem;
}

/* ---------- CTA 下方扩展区（项目详情 + 学习资源） ---------- */
.xhh-home-ext {
  --xhh-max: 72rem;
  --xhh-pad: clamp(1.25rem, 4vw, 2rem);
  margin-top: 0;
  color: var(--xhh-text);
}

.xhh-home-ext > section {
  position: relative;
  isolation: isolate;
}

.xhh-home-ext__projects::before,
.xhh-home-ext__resources::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 100vw;
  margin-left: -50vw;
  pointer-events: none;
}

.xhh-home-ext__projects::before {
  background: var(--md-default-bg-color);
}

.xhh-home-ext__resources::before {
  background: var(--xhh-surface);
  border-block: 1px solid var(--xhh-border);
}

.xhh-home-ext .xhh-section-head .md-button {
  margin-top: 0.75rem;
  border-radius: 999px;
}

/* 项目详情卡片 */
.xhh-project-block {
  margin: 0 0 1.75rem;
  padding: 1.35rem 1.5rem 1.5rem;
  background: var(--xhh-surface-elevated);
  border: 1px solid var(--xhh-border);
  border-radius: var(--xhh-radius-lg);
  box-shadow: var(--xhh-shadow);
}

.xhh-project-block > h3 {
  margin: 0 0 0.65rem !important;
  font-size: 1.1rem !important;
  font-weight: 700;
  color: var(--xhh-text);
}

.xhh-project-block > h3 .headerlink {
  display: none;
}

.xhh-project-block > p {
  margin: 0 0 0.85rem;
  color: var(--xhh-muted);
  line-height: 1.7;
}

.xhh-home-ext .xhh-project-block > ul {
  margin: 0 0 1rem;
  padding: 0;
  list-style: none;
}

.xhh-home-ext .xhh-project-block > ul > li {
  margin: 0.35rem 0;
  padding-left: 0;
  font-size: 0.92rem;
  color: var(--xhh-muted);
  line-height: 1.6;
}

.xhh-home-ext .xhh-project-block > ul > li strong {
  color: var(--xhh-text);
  font-weight: 600;
}

.xhh-project-block img {
  display: block;
  max-width: min(100%, 36rem);
  margin: 0.75rem 0 1rem;
  border-radius: var(--xhh-radius);
  border: 1px solid var(--xhh-border);
}

.xhh-project-block .video-embed {
  margin: 0.5rem 0 0;
}

/* 学习资源卡片 */
.xhh-home-ext .xhh-ext-cards.grid.cards > ul {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 16rem), 1fr));
  gap: 1rem;
  margin: 0;
}

.xhh-home-ext .xhh-ext-cards.grid.cards > ul > li {
  margin: 0;
  padding: 1.25rem 1.15rem;
  background: var(--xhh-surface-elevated);
  border: 1px solid var(--xhh-border);
  border-radius: var(--xhh-radius);
  box-shadow: var(--xhh-shadow);
}

.xhh-home-ext .xhh-ext-cards.grid.cards > ul > li > p:first-child {
  font-weight: 600;
  color: var(--xhh-text);
}

.xhh-home-ext .xhh-ext-cards.grid.cards > ul > li hr {
  margin: 0.55rem 0;
  border-color: var(--xhh-border);
}