:root {
  --zy-bright-purple: #a43bbc;
  --zy-deep-purple: #702184;
  --zy-soft-purple: #f2dcf8;
  --zy-warm-white: #fffcff;
  --zy-ink: #35183e;
  --zy-border: #e7cbed;
  --zy-shell-width: 75rem;
  --zy-gutter: clamp(1rem, 4vw, 2rem);
}

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

html {
  background: var(--zy-warm-white);
  scroll-behavior: smooth;
}

body {
  min-width: 20rem;
  margin: 0;
  color: var(--zy-ink);
  background: var(--zy-warm-white);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  font-size: 1rem;
  line-height: 1.65;
}

a {
  color: var(--zy-deep-purple);
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--zy-bright-purple);
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--zy-bright-purple);
  outline-offset: 3px;
}

button,
input,
textarea,
select {
  font: inherit;
}

button,
.button,
input[type="submit"] {
  min-height: 2.75rem;
}

.site-shell {
  width: min(100% - (var(--zy-gutter) * 2), var(--zy-shell-width));
  margin-inline: auto;
}

.site-main {
  padding-block: clamp(2rem, 6vw, 4rem);
}

.home-page.site-main {
  padding-block: 0;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  padding: 0.75rem 1.125rem;
  font-weight: 750;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: 999px;
  transition: background-color 160ms ease, color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

.button--primary {
  color: #fff;
  background: var(--zy-deep-purple);
  box-shadow: 0 0.625rem 1.5rem rgb(112 33 132 / 22%);
}

.button--primary:hover {
  color: #fff;
  background: #59186b;
  transform: translateY(-1px);
}

.button--secondary {
  color: var(--zy-deep-purple);
  background: rgb(255 255 255 / 74%);
  border-color: rgb(112 33 132 / 30%);
}

.button--secondary:hover {
  color: var(--zy-deep-purple);
  background: #fff;
}

.home-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(3.5rem, 9vw, 7.25rem) clamp(3.5rem, 8vw, 6rem);
  background:
    radial-gradient(circle at 85% 18%, rgb(255 255 255 / 90%) 0 4%, transparent 20%),
    linear-gradient(120deg, #f9effd 0%, #f0d8f7 48%, #e7cdf5 100%);
}

.home-hero::after {
  position: absolute;
  right: -9rem;
  bottom: -13rem;
  width: 30rem;
  height: 30rem;
  content: "";
  background: rgb(164 59 188 / 9%);
  border-radius: 50%;
}

.home-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-items: center;
}

.home-hero__content {
  max-width: 42rem;
}

.home-hero__eyebrow,
.section-kicker {
  margin: 0 0 0.375rem;
  color: var(--zy-deep-purple);
  font-size: 0.875rem;
  font-weight: 800;
  letter-spacing: 0.13em;
}

.home-hero__identity {
  display: inline-block;
  margin: 0;
  padding: 0.3125rem 0.75rem;
  color: var(--zy-deep-purple);
  font-size: 0.875rem;
  font-weight: 700;
  background: rgb(255 255 255 / 68%);
  border: 1px solid rgb(112 33 132 / 16%);
  border-radius: 999px;
}

.home-hero h1 {
  max-width: 10ch;
  margin: 1rem 0 1.25rem;
  color: var(--zy-ink);
  font-size: clamp(2.35rem, 5.2vw, 4.75rem);
  font-weight: 850;
  line-height: 1.16;
  letter-spacing: -0.055em;
}

.home-hero__summary {
  max-width: 34rem;
  margin: 0;
  font-size: clamp(1rem, 1.4vw, 1.125rem);
}

.home-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.875rem;
}

.audience-paths {
  padding-block: clamp(3.5rem, 8vw, 6rem);
}

.audience-paths__intro {
  max-width: 38rem;
}

.audience-paths h2 {
  margin: 0;
  color: var(--zy-ink);
  font-size: clamp(1.85rem, 3.6vw, 3rem);
  line-height: 1.25;
  letter-spacing: -0.035em;
}

.audience-paths__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
  margin-top: 2rem;
}

.audience-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.5rem 1rem;
  min-height: 15rem;
  padding: clamp(1.5rem, 3vw, 2.25rem);
  color: var(--zy-ink);
  text-decoration: none;
  border: 1px solid var(--zy-border);
  border-radius: 1.25rem;
  box-shadow: 0 0.75rem 2.25rem rgb(53 24 62 / 6%);
  transition: box-shadow 160ms ease, transform 160ms ease;
}

.audience-card:hover {
  color: var(--zy-ink);
  box-shadow: 0 1.25rem 2.75rem rgb(53 24 62 / 14%);
  transform: translateY(-3px);
}

.audience-card--family {
  background: linear-gradient(135deg, #fbf3fd, #f2dcf8);
}

.audience-card--partner {
  background: linear-gradient(135deg, #f1e5fa, #e7d0f2);
}

.audience-card__number {
  grid-column: 1 / -1;
  color: var(--zy-deep-purple);
  font-size: 0.875rem;
  font-weight: 800;
  letter-spacing: 0.1em;
}

.audience-card__label,
.audience-card__title,
.audience-card__description,
.audience-card__link {
  grid-column: 1 / -1;
}

.page-intro {
  max-width: 48rem;
  padding-block: clamp(1rem, 3vw, 2rem);
}

.page-intro h1,
.course-single h1 {
  margin: 0;
  color: var(--zy-ink);
  font-size: clamp(2rem, 4vw, 3.5rem);
  line-height: 1.2;
  letter-spacing: -0.04em;
}

.teacher-profile {
  padding-block: clamp(1rem, 3vw, 2rem) clamp(2.5rem, 6vw, 4.5rem);
  background: linear-gradient(135deg, #fcf5ff, #eee0f8);
}

.teacher-profile__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-items: center;
}

.teacher-profile__content {
  max-width: 42rem;
}

.teacher-profile h1,
.teacher-approach h2,
.about-panel h2,
.case-principles h2 {
  margin: 0;
  color: var(--zy-ink);
  font-size: clamp(1.8rem, 3.8vw, 3.25rem);
  line-height: 1.2;
  letter-spacing: -0.04em;
}

.teacher-approach,
.about-panel,
.case-principles {
  max-width: 56rem;
  margin-block: clamp(2rem, 5vw, 4rem);
  padding: clamp(1.4rem, 4vw, 2.5rem);
  background: #fff;
  border: 1px solid var(--zy-border);
  border-radius: 1.25rem;
  box-shadow: 0 0.75rem 2rem rgb(53 24 62 / 6%);
}

.teacher-approach h2,
.about-panel h2,
.case-principles h2 {
  font-size: clamp(1.55rem, 3vw, 2.25rem);
}

.teacher-approach__list,
.case-principles ul {
  display: grid;
  gap: 0.7rem;
  margin-block: 1.5rem;
  padding-left: 1.2rem;
}

.teacher-approach__boundary,
.about-panel--contact {
  border-left: 0.25rem solid var(--zy-bright-purple);
}

.about-panel--contact {
  background: linear-gradient(135deg, #fbf3fd, #f2dcf8);
}

.case-principles {
  background: linear-gradient(135deg, #fbf3fd, #f2dcf8);
}

.case-empty {
  max-width: 52rem;
  margin-top: 1.5rem;
  padding: 1.25rem;
  background: #fff;
  border: 1px solid var(--zy-border);
  border-radius: 0.75rem;
}

.contact-channels {
  display: grid;
  justify-items: start;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.contact-channels img {
  width: min(100%, 12rem);
  height: auto;
  padding: 0.5rem;
  background: #fff;
  border: 1px solid var(--zy-border);
  border-radius: 0.75rem;
}

.contact-channels p {
  margin: 0;
}

.article-tools {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  justify-content: space-between;
  gap: 1rem 2rem;
  margin-block: 1rem 2rem;
  padding: 1.25rem;
  background: linear-gradient(135deg, #fbf3fd, #f2dcf8);
  border-radius: 1rem;
}

.article-search {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.625rem;
}

.article-search label {
  font-weight: 750;
}

.article-search input {
  min-height: 2.75rem;
  min-width: min(100%, 15rem);
  padding: 0.5rem 0.75rem;
  color: var(--zy-ink);
  background: #fff;
  border: 1px solid var(--zy-border);
  border-radius: 0.5rem;
}

.article-search button {
  padding-inline: 1rem;
  color: #fff;
  font-weight: 750;
  background: var(--zy-deep-purple);
  border: 1px solid var(--zy-deep-purple);
  border-radius: 0.5rem;
  cursor: pointer;
}

.article-categories {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.8rem;
}

.post-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.25rem;
}

.post-card {
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--zy-border);
  border-radius: 1rem;
  box-shadow: 0 0.75rem 2rem rgb(53 24 62 / 7%);
}

.post-card__visual,
.post-card__visual img {
  display: block;
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.post-card__visual--placeholder {
  background: linear-gradient(135deg, #f4dffa, #ba60cf 48%, #702184);
}

.post-card__body {
  padding: 1.25rem;
}

.post-card__date,
.article-meta,
.article-categories {
  color: var(--zy-deep-purple);
  font-size: 0.875rem;
  font-weight: 650;
}

.post-card__body h2 {
  margin: 0.25rem 0 0.625rem;
  font-size: 1.25rem;
  line-height: 1.35;
}

.post-card__body h2 a {
  color: var(--zy-ink);
}

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

.pagination-wrap {
  margin-top: 2rem;
}

.pagination .nav-links,
.page-numbers {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0;
  list-style: none;
}

.page-numbers a,
.page-numbers.current {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.75rem;
  min-height: 2.75rem;
  padding-inline: 0.75rem;
  border: 1px solid var(--zy-border);
  border-radius: 0.5rem;
}

.page-numbers.current {
  color: #fff;
  background: var(--zy-deep-purple);
}

.article-single__content {
  max-width: 52rem;
}

.article-single__content h1 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.5rem);
  line-height: 1.2;
}

.article-single__image {
  margin-block: 1.5rem;
  overflow: hidden;
  border-radius: 1rem;
}

.article-single__image img {
  display: block;
  width: 100%;
  height: auto;
}

.related-posts {
  margin-top: 3rem;
}

.related-posts h2 {
  margin-top: 0;
}

.audience-page__points {
  margin-block: 2rem 3rem;
  padding: clamp(1.25rem, 3vw, 2rem);
  background: linear-gradient(135deg, #fbf3fd, #f2dcf8);
  border-radius: 1.25rem;
}

.audience-page__points h2,
.course-section h2 {
  margin-top: 0;
  font-size: clamp(1.5rem, 3vw, 2.25rem);
}

.audience-page__points li + li {
  margin-top: 0.75rem;
}

.audience-page__actions {
  margin-top: 2rem;
}

.course-section {
  padding-block: clamp(2rem, 5vw, 4rem);
}

.home-section,
.wechat-cta,
.case-section {
  padding-block: clamp(3rem, 7vw, 5.5rem);
}

.home-section h2,
.wechat-cta h2,
.case-section h2 {
  max-width: 20ch;
  margin: 0;
  color: var(--zy-ink);
  font-size: clamp(1.7rem, 3.5vw, 2.75rem);
  line-height: 1.25;
}

.home-section p:not(.section-kicker),
.wechat-cta p:not(.section-kicker),
.case-section p:not(.section-kicker) {
  max-width: 42rem;
}

.model-913 {
  background: var(--zy-soft-purple);
}

.teacher-feature {
  background: linear-gradient(135deg, #fcf5ff, #eee0f8);
}

.text-link {
  display: inline-block;
  margin-top: 0.5rem;
  font-weight: 800;
}

.wechat-cta {
  color: var(--zy-warm-white);
  background: var(--zy-deep-purple);
}

.wechat-cta .section-kicker,
.wechat-cta h2 {
  color: var(--zy-warm-white);
}

.wechat-cta__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.wechat-cta .button--primary {
  color: var(--zy-deep-purple);
  background: #fff;
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.25rem;
  margin-block: 1.5rem;
}

.case-card {
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--zy-border);
  border-radius: 1rem;
  box-shadow: 0 0.75rem 2rem rgb(53 24 62 / 7%);
}

.case-card__image,
.case-card__image img,
.case-single__image img {
  display: block;
  width: 100%;
  height: auto;
}

.case-card__body {
  padding: 1.25rem;
}

.case-card h3 {
  margin: 0 0 0.625rem;
  font-size: 1.25rem;
  line-height: 1.35;
}

.case-card h3 a {
  color: var(--zy-ink);
}

.case-card__attribution {
  margin-top: 1rem;
  color: var(--zy-deep-purple);
  font-size: 0.875rem;
  font-weight: 650;
}

.case-single__content {
  max-width: 52rem;
}

.case-single__image {
  margin-block: 1.5rem;
  overflow: hidden;
  border-radius: 1rem;
}

.course-section__header {
  max-width: 42rem;
  margin-bottom: 1.5rem;
}

.course-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.25rem;
}

.course-card {
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--zy-border);
  border-radius: 1rem;
  box-shadow: 0 0.75rem 2rem rgb(53 24 62 / 7%);
}

.course-card__image,
.course-card__image img,
.course-single__image img {
  display: block;
  width: 100%;
  height: auto;
}

.course-card__body {
  padding: 1.25rem;
}

.course-card h3 {
  margin: 0.25rem 0 0.625rem;
  font-size: 1.25rem;
  line-height: 1.35;
}

.course-card h3 a {
  color: var(--zy-ink);
}

.course-card__meta,
.course-card__attribution {
  margin: 0;
  color: var(--zy-deep-purple);
  font-size: 0.875rem;
  font-weight: 650;
}

.course-card__attribution {
  margin-top: 1rem;
}

.course-single__content {
  max-width: 52rem;
}

.course-single__image {
  margin-block: 1.5rem;
  overflow: hidden;
  border-radius: 1rem;
}

.course-single__details {
  display: grid;
  gap: 0.75rem;
  margin: 1.5rem 0;
  padding: 1rem 1.25rem;
  background: var(--zy-soft-purple);
  border-radius: 0.75rem;
}

.course-single__details div {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.course-single__details dt {
  font-weight: 800;
}

.course-single__details dd {
  margin: 0;
}

.audience-card__label {
  color: var(--zy-deep-purple);
  font-size: 0.875rem;
  font-weight: 700;
}

.audience-card__title {
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  font-weight: 850;
  line-height: 1.2;
}

.audience-card__description {
  max-width: 28rem;
}

.audience-card__link {
  align-self: end;
  color: var(--zy-deep-purple);
  font-weight: 800;
}

@media (max-width: 44rem) {
  .home-hero__inner {
    grid-template-columns: 1fr;
    gap: 1.75rem;
  }

  .teacher-profile__grid {
    grid-template-columns: 1fr;
    gap: 1.75rem;
  }

  .home-hero h1 {
    max-width: 12ch;
  }

  .audience-paths__grid {
    grid-template-columns: 1fr;
  }

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

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

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

@media (max-width: 30rem) {
  .home-hero__actions {
    flex-direction: column;
  }

  .home-hero__actions .button {
    width: 100%;
  }

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

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

  .article-search {
    align-items: stretch;
    flex-direction: column;
    width: 100%;
  }

  .article-search input,
  .article-search button {
    width: 100%;
  }

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

  .wechat-cta__inner {
    align-items: flex-start;
    flex-direction: column;
  }
}

.skip-link {
  position: fixed;
  z-index: 20;
  top: 0.5rem;
  left: 0.5rem;
  transform: translateY(-150%);
  padding: 0.625rem 0.875rem;
  color: var(--zy-warm-white);
  background: var(--zy-deep-purple);
  border-radius: 0.5rem;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: relative;
  z-index: 10;
  background: var(--zy-warm-white);
  background: color-mix(in srgb, var(--zy-warm-white) 95%, transparent);
  border-bottom: 1px solid var(--zy-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: 1rem;
  min-height: 4.75rem;
}

.site-brand,
.site-footer__brand {
  color: var(--zy-deep-purple);
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-decoration: none;
  white-space: nowrap;
}

.site-nav {
  margin-left: auto;
}

.site-nav__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 0.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-nav__item a,
.site-nav__list > .menu-item > a {
  display: block;
  min-height: 2.75rem;
  padding: 0.625rem 0.75rem;
  color: var(--zy-ink);
  font-size: 0.9375rem;
  font-weight: 650;
  text-decoration: none;
  border-radius: 0.5rem;
}

.site-nav__item a:hover,
.site-nav__list > .menu-item > a:hover,
.site-nav__item.current-menu-item a,
.site-nav__item.current_page_item a,
.site-nav__list > .menu-item.current-menu-item > a,
.site-nav__list > .menu-item.current_page_item > a {
  color: var(--zy-deep-purple);
  background: var(--zy-soft-purple);
}

.menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  min-width: 2.75rem;
  padding: 0.5rem 0.75rem;
  color: var(--zy-deep-purple);
  background: transparent;
  border: 1px solid var(--zy-deep-purple);
  border-radius: 0.5rem;
  cursor: pointer;
}

.site-footer {
  margin-top: 4rem;
  color: var(--zy-warm-white);
  background: var(--zy-deep-purple);
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding-block: 2.5rem;
}

.site-footer__brand,
.site-footer a {
  color: var(--zy-warm-white);
}

.site-footer p {
  margin: 0.375rem 0 0;
}

.site-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
}

@media (max-width: 62rem) {
  .menu-toggle {
    display: inline-flex;
    margin-left: auto;
  }

  .site-nav {
    margin-left: 0;
  }

  .site-nav__panel {
    position: absolute;
    top: 100%;
    right: 0;
    left: 0;
    padding: 0.75rem var(--zy-gutter) 1rem;
    background: var(--zy-warm-white);
    border-bottom: 1px solid var(--zy-border);
    box-shadow: 0 0.75rem 1.5rem rgb(53 24 62 / 12%);
  }

  .site-nav__panel[hidden] {
    display: none;
  }

  .site-nav__list {
    align-items: stretch;
    justify-content: stretch;
    gap: 0.25rem;
  }

  .site-nav__item,
  .site-nav__list > .menu-item {
    flex: 1 1 9rem;
  }

  .site-nav__item a,
  .site-nav__list > .menu-item > a {
    border: 1px solid transparent;
  }
}

@media (max-width: 30rem) {
  .site-footer__inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .site-nav__item,
  .site-nav__list > .menu-item {
    flex-basis: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0s !important;
  }
}