/* 首页首屏。下面的栏目沿用原来的 aispu-home.css。 */
body.pt-home .pt-header:not(.is-scrolled) {
  background: transparent;
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
  border-bottom: none;
  box-shadow: none;
  height: 72px;
}
body.pt-home .pt-header.is-scrolled {
  background: #fff;
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
  border-bottom: 1px solid rgba(0, 0, 0, .06);
  box-shadow: 0 1px 0 rgba(0, 0, 0, .04);
  height: 64px;
}
body.pt-home .pt-brand { position: relative; }
body.pt-home .pt-header:not(.is-scrolled) .pt-brand__logo { visibility: hidden; }
body.pt-home .pt-brand__logo--night {
  position: absolute;
  left: 0;
  top: 50%;
  height: 36px;
  width: auto;
  transform: translateY(-50%);
}
body.pt-home .pt-header:not(.is-scrolled) .pt-brand__logo--night { visibility: visible; }
body.pt-home .pt-header.is-scrolled .pt-brand__logo--night { visibility: hidden; }
body.pt-home .pt-header:not(.is-scrolled) .pt-nav__item,
body.pt-home .pt-header:not(.is-scrolled) .pt-nav__item span,
body.pt-home .pt-header:not(.is-scrolled) .pt-header__burger,
body.pt-home .pt-header:not(.is-scrolled) .pt-user__trigger,
body.pt-home .pt-header:not(.is-scrolled) .pt-brand__text { color: #fff; }
body.pt-home .pt-header:not(.is-scrolled) .pt-nav__item:hover,
body.pt-home .pt-header:not(.is-scrolled) .pt-nav__item.is-open,
body.pt-home .pt-header:not(.is-scrolled) .pt-nav__item.is-active {
  color: #fff;
  background: rgba(255, 255, 255, .18);
}
body.pt-home .pt-header:not(.is-scrolled) .pt-nav__item.is-active span,
body.pt-home .pt-header:not(.is-scrolled) .pt-nav__item:hover span { color: #fff; background: transparent; }
body.pt-home .pt-header:not(.is-scrolled) .pt-header__auth .pt-btn--ghost,
body.pt-home .pt-header:not(.is-scrolled) .pt-header__auth .pt-btn--ghost:focus {
  color: #fff;
  background: transparent;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .8);
  border-radius: 8px;
}
body.pt-home .pt-header:not(.is-scrolled) .pt-header__tools:hover .pt-btn--ghost,
body.pt-home .pt-header:not(.is-scrolled) .pt-header__auth .pt-btn--ghost:hover {
  color: #152033;
  background: #fff;
  box-shadow: none;
}
body.pt-home .pt-header:not(.is-scrolled) .pt-user__trigger:hover,
body.pt-home .pt-header:not(.is-scrolled) .pt-user.is-open .pt-user__trigger,
body.pt-home .pt-header:not(.is-scrolled) .pt-user__trigger:hover .pt-brand__text,
body.pt-home .pt-header:not(.is-scrolled) .pt-user.is-open .pt-user__trigger .pt-brand__text {
  color: #fff;
  background: rgba(255, 255, 255, .18);
}
body.pt-home .pt-header:not(.is-scrolled) .pt-user__trigger:hover .pt-brand__text,
body.pt-home .pt-header:not(.is-scrolled) .pt-user.is-open .pt-user__trigger .pt-brand__text {
  background: transparent;
}
body.pt-home .pt-header:not(.is-scrolled) .pt-header__auth .pt-btn--primary,
body.pt-home .pt-header:not(.is-scrolled) .pt-header__auth .pt-btn--primary:focus {
  background: #fff;
  color: #152033;
  border-radius: 8px;
  box-shadow: none;
}
body.pt-home .pt-header:not(.is-scrolled) .pt-header__tools:hover .pt-btn--primary,
body.pt-home .pt-header:not(.is-scrolled) .pt-header__auth .pt-btn--primary:hover {
  background: #2f6fe0;
  color: #fff;
  box-shadow: none;
}
body.pt-home .pt-mega,
body.pt-home .pt-mega a,
body.pt-home .pt-user__menu,
body.pt-home .pt-user__menu a { color: #1a2233; filter: none; }

.yd {
  --ink: #2b2f32;
  --muted: #5c6166;
  --hot: #fc4016;
  --hot-deep: #e03612;
  color: var(--ink);
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", sans-serif;
  font-weight: 300;
  padding: 0 0 80px;
}
.yd a { color: inherit; }

.yd-hero {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
  background: #10182c;
  color: #fff;
}
.yd-hero__video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.yd-hero__shade {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(8, 14, 32, .55) 0%, rgba(8, 16, 36, .28) 46%, rgba(6, 12, 28, .62) 100%);
}
.yd-hero__stage {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: min(1180px, calc(100% - 72px));
  min-height: 100vh;
  margin: 0 auto;
  padding: 128px 0 28px;
}
.yd-hero__top {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(260px, .75fr);
  gap: 48px;
  align-items: end;
}
.yd-hero h1 {
  margin: 0;
  max-width: 9.2em;
  min-height: 3.46em;
  font-size: clamp(42px, 4.8vw, 68px);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -.02em;
  text-align: left;
}
.yd-type__sr {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.yd-type__caret {
  display: inline-block;
  width: 3px;
  height: .82em;
  margin-left: 6px;
  background: #fff;
  vertical-align: -.06em;
  animation: yd-blink 1s steps(1) infinite;
}
.yd-hero__aside {
  align-self: end;
  text-align: left;
}
.yd-hero__eyebrow {
  margin: 0 0 12px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .14em;
  color: rgba(255, 255, 255, .78);
}
.yd-hero__text {
  margin: 0;
  max-width: 34em;
  font-size: 15px;
  font-weight: 400;
  line-height: 1.7;
  color: rgba(255, 255, 255, .9);
}
.yd-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
  justify-content: flex-start;
}
.yd-hero__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 0 30px;
  border-radius: 10px;
  font-size: 17px;
  font-weight: 600;
  text-decoration: none;
}
.yd-hero__btn--ghost {
  color: #fff;
  background: transparent;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .72);
}
.yd-hero__btn--ghost:hover { background: rgba(255, 255, 255, .1); color: #fff; }
.yd-hero__btn--solid,
.yd-hero__btn--solid:visited { background: #fff; color: #152033; }
.yd-hero__btn--solid:hover { background: #f3f5f8; color: #152033; }
.yd-hero__cards {
  display: grid;
  grid-template-columns: .72fr 1.45fr .9fr;
  gap: 16px;
  align-items: end;
  margin-top: 48px;
}
.yd-hero__card {
  position: relative;
  display: block;
  height: 210px;
  border-radius: 14px;
  background: rgba(255, 255, 255, .92) center/cover no-repeat;
  box-shadow: 0 22px 48px rgba(0, 0, 0, .28);
  overflow: hidden;
  transition: opacity .6s ease;
}
.yd-hero__card--0 { height: 176px; }
.yd-hero__card--1 { height: 268px; }
.yd-hero__card--2 { height: 214px; }
.yd-hero__card.is-out { opacity: 0; }
.yd-hero__card.is-empty { background: #e8eef8; }
.yd-hero__card span {
  position: absolute;
  left: 12px;
  bottom: 12px;
  max-width: calc(100% - 24px);
  padding: 5px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .92);
  color: #152033;
  font-size: 12px;
  font-weight: 700;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.yd-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 32px;
}
.yd-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  padding: 8px 32px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 400;
  text-decoration: none;
  transition: background .2s ease, transform .2s ease;
}
.yd-btn:hover,
.yd-btn:focus-visible { text-decoration: none; transform: translateY(-1px); }
.yd-btn--hot,
.yd-btn--hot:visited { background: var(--hot); color: #fff; }
.yd-btn--hot:hover,
.yd-btn--hot:focus-visible { background: var(--hot-deep); color: #fff; }
.yd-btn--soft,
.yd-btn--soft:visited { background: rgba(255, 255, 255, .92); color: #111; }
.yd-hero .yd-btn--soft { background: rgba(255, 255, 255, .9); }
.yd-products .yd-btn--soft,
.yd-products .yd-btn--soft:visited { background: #f3f3f3; color: #111; }
.yd-products .yd-btn--soft:hover { background: #e7e7e7; }
.yd-row .yd-actions,
.yd-about .yd-actions { justify-content: flex-start; }

.yd-why,
.yd-path,
.yd-about {
  padding: 88px 20px;
}
.yd-why { background: #f9f9f9; }
.yd-why__inner,
.yd-path__inner,
.yd-about__inner {
  width: min(1000px, 100%);
  margin: 0 auto;
}
.yd-why h2,
.yd-path h2,
.yd-works h2,
.yd-about h2 {
  margin: 0 0 28px;
  font-size: 32px;
  font-weight: 400;
  text-align: center;
}
.yd-why__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 36px;
}
.yd-why h3 {
  margin: 0 0 12px;
  font-size: 20px;
  font-weight: 500;
}
.yd-why p,
.yd-path__lead,
.yd-about p {
  margin: 0;
  color: #292929;
  font-size: 15px;
  line-height: 1.8;
}
.yd-path { background: #fff; }
.yd-path__lead { text-align: center; margin-bottom: 36px; }
.yd-path ol {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: yd;
}
.yd-path li { counter-increment: yd; }
.yd-path li::before {
  content: counter(yd);
  display: block;
  margin-bottom: 10px;
  color: var(--hot);
  font-size: 28px;
  font-weight: 300;
}
.yd-path b { display: block; margin-bottom: 8px; font-size: 20px; font-weight: 500; }
.yd-path span { color: #3a3a3a; font-size: 15px; line-height: 1.7; }

.yd-works { padding: 72px 0 20px; }
.yd-works__head {
  width: min(1000px, calc(100% - 40px));
  margin: 0 auto 20px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}
.yd-works__head h2 { margin: 0; text-align: left; }
.yd-works__head a { color: var(--hot); font-size: 14px; text-decoration: none; }
.yd-works__empty {
  width: min(1000px, calc(100% - 40px));
  margin: 0 auto;
  color: var(--muted);
}
.yd-rail { overflow: hidden; }
.yd-track {
  display: flex;
  gap: 16px;
  width: max-content;
  padding: 0 20px 12px;
  animation: yd-marquee 40s linear infinite;
}
.yd-rail:hover .yd-track { animation-play-state: paused; }
.yd-shot {
  width: 240px;
  flex: none;
  text-decoration: none;
}
.yd-shot__pic {
  display: block;
  height: 150px;
  border-radius: 12px;
  background: #e6e6e6 center/cover no-repeat;
}
.yd-shot__pic.is-empty {
  background: linear-gradient(160deg, #ececec, #d9d9d9);
}
.yd-shot strong,
.yd-shot em { display: block; }
.yd-shot strong { margin-top: 8px; font-size: 15px; font-weight: 500; }
.yd-shot em { margin-top: 2px; color: var(--muted); font-size: 12px; font-style: normal; }
.yd-about { background: #fff; text-align: center; }
.yd-about p { max-width: 680px; margin: 0 auto 24px; }
@keyframes yd-marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

.yd-products {
  width: min(1000px, calc(100% - 40px));
  margin: 36px auto 0;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.yd-row {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
  gap: 28px;
  align-items: center;
  padding: 30px;
  background: #fff;
  border-radius: 20px;
  box-shadow: 0 3px 5px rgba(0, 0, 0, .03);
}
.yd-row h2 {
  margin: 0;
  font-size: 32px;
  font-weight: 400;
  line-height: 1.2;
}
.yd-row h2 em {
  margin-left: 12px;
  font-style: normal;
  font-size: 14px;
  font-weight: 300;
  color: var(--muted);
}
.yd-row p {
  margin: 14px 0 0;
  color: #292929;
  font-size: 15px;
  line-height: 1.7;
}
.yd-row ul {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}
.yd-row li {
  position: relative;
  margin: 0 0 8px;
  padding-left: 14px;
  color: #3a3a3a;
  font-size: 14px;
  line-height: 1.6;
}
.yd-row li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .55em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--hot);
}
.yd-row__visual {
  min-height: 280px;
  border-radius: 12px;
  background: #ececec center/cover no-repeat;
}
.yd-row__visual.is-sky {
  background:
    radial-gradient(circle at 70% 40%, rgba(255,255,255,.35), transparent 28%),
    linear-gradient(160deg, #1b3a5c, #0e1c30);
}
.yd-row__visual.is-paper {
  background: linear-gradient(160deg, #f7f1e8, #e7d7c3);
}
.yd-row__visual.is-leaf {
  background: linear-gradient(160deg, #e7f0ea, #c9ddd0);
}

.yd-hero__eyebrow,
.yd-hero__text,
.yd-hero__actions {
  animation: none;
}

@keyframes yd-rise {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: none; }
}
@keyframes yd-blink {
  50% { opacity: 0; }
}

@media (max-width: 800px) {
  .yd-hero { min-height: 0; }
  .yd-hero__stage { width: calc(100% - 32px); min-height: 0; padding-top: 104px; }
  .yd-hero__top { grid-template-columns: 1fr; gap: 22px; }
  .yd-hero h1 { font-size: 36px; }
  .yd-hero__cards { grid-template-columns: 1fr; }
  .yd-hero__card,
  .yd-hero__card--0,
  .yd-hero__card--1,
  .yd-hero__card--2 { height: 180px; }
  .yd-row { grid-template-columns: 1fr; padding: 22px; }
  .yd-row__visual { min-height: 180px; }
  .yd-why__grid,
  .yd-path ol { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  .yd-hero__eyebrow,
  .yd-hero__text,
  .yd-hero__actions,
  .yd-type__caret,
  .pt-home .cta-banner__sky i { animation: none; }
}

/* 页尾行动条：跟首屏同一套深色，去掉亮蓝渐变和圆点底纹 */
.pt-home .cta-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
  margin: 8px 0 72px;
  padding: 52px 56px;
  border-radius: 22px;
  text-align: left;
  color: #fff;
  background:
    radial-gradient(420px 220px at 92% 0%, rgba(80, 140, 255, .32), transparent 70%),
    #121826;
  box-shadow: 0 18px 40px rgba(16, 24, 44, .1);
}
.pt-home .cta-banner::before { content: none; }
.pt-home .cta-banner > .cta-banner__sky {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}
.pt-home .cta-banner > .cta-banner__copy,
.pt-home .cta-banner > .btn { position: relative; z-index: 1; }
.pt-home .cta-banner__sky i {
  position: absolute;
  width: 12px;
  height: 12px;
  background: #fff;
  clip-path: polygon(50% 0, 61% 35%, 100% 50%, 61% 65%, 50% 100%, 39% 65%, 0 50%, 39% 35%);
  opacity: .35;
  animation: cta-star 3.2s ease-in-out infinite;
}
.pt-home .cta-banner__sky i:nth-child(1) { top: 10%; left: 7%; width: 8px; height: 8px; animation-delay: 0s; }
.pt-home .cta-banner__sky i:nth-child(2) { top: 8%; left: 24%; width: 6px; height: 6px; animation-delay: .6s; animation-duration: 2.6s; }
.pt-home .cta-banner__sky i:nth-child(3) { top: 11%; left: 42%; width: 10px; height: 10px; animation-delay: 1.1s; }
.pt-home .cta-banner__sky i:nth-child(4) { top: 9%; left: 60%; width: 14px; height: 14px; animation-delay: .3s; animation-duration: 3.8s; }
.pt-home .cta-banner__sky i:nth-child(5) { bottom: 12%; left: 68%; width: 8px; height: 8px; animation-delay: 1.4s; }
.pt-home .cta-banner__sky i:nth-child(6) { bottom: 10%; left: 36%; width: 7px; height: 7px; animation-delay: .9s; animation-duration: 2.9s; }
.pt-home .cta-banner__sky i:nth-child(7) { top: 10%; right: 5%; width: 11px; height: 11px; animation-delay: 1.8s; }
.pt-home .cta-banner__sky i:nth-child(8) { bottom: 11%; left: 12%; width: 9px; height: 9px; animation-delay: .2s; animation-duration: 3.5s; }
@keyframes cta-star {
  0%, 100% { opacity: .22; transform: scale(.75) rotate(0deg); }
  50% { opacity: 1; transform: scale(1) rotate(20deg); }
}
.pt-home .cta-banner__copy { min-width: 0; }
.pt-home .cta-banner h2 {
  margin: 0 0 10px;
  font-size: 32px;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.02em;
}
.pt-home .cta-banner p {
  margin: 0;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.65;
  color: rgba(255, 255, 255, .72);
  opacity: 1;
}
.pt-home .cta-banner .btn,
.pt-home .cta-banner .btn:visited {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 28px;
  border-radius: 10px;
  background: #fff;
  background-image: none;
  color: #152033;
  font-size: 16px;
  font-weight: 600;
  box-shadow: none;
  white-space: nowrap;
}
.pt-home .cta-banner .btn:hover,
.pt-home .cta-banner .btn:focus-visible {
  background: #f3f5f8;
  background-image: none;
  color: #152033;
  transform: translateY(-1px);
}
@media (max-width: 800px) {
  .pt-home .cta-banner {
    flex-direction: column;
    align-items: stretch;
    gap: 22px;
    margin: 8px 0 40px;
    padding: 28px 22px;
    border-radius: 16px;
  }
  .pt-home .cta-banner h2 { font-size: 24px; }
  .pt-home .cta-banner .btn { width: 100%; white-space: normal; }
}

/* 首屏以下：冷蓝蓝图纸，大块白底收掉，卡片仍保持白底可读 */
body.pt-home,
body.pt-home .pt-shell__main--flush {
  background-color: #eef3fb;
  background-image:
    linear-gradient(rgba(59, 130, 246, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59, 130, 246, 0.055) 1px, transparent 1px),
    radial-gradient(1100px 420px at 88% 8%, rgba(6, 182, 212, 0.14), transparent 62%),
    radial-gradient(900px 380px at 6% 30%, rgba(99, 102, 241, 0.08), transparent 60%);
  background-size: 26px 26px, 26px 26px, auto, auto;
  background-attachment: fixed;
}
body.pt-home .pt-header.is-scrolled {
  background: rgba(238, 243, 251, 0.88);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid #dce7f5;
  box-shadow: none;
}
body.pt-home #works,
body.pt-home .courses,
body.pt-home .aw-inspire,
body.pt-home .workshop.aw-voices,
body.pt-home .aw-growth,
body.pt-home .partners {
  background: transparent;
}

/* 仅打开时的斜向展开，不改首页颜色、顶栏和 Logo */
@property --home-reveal {
  syntax: "<number>";
  inherits: true;
  initial-value: 0;
}
@media (prefers-reduced-motion: no-preference) {
  body.pt-home {
    --home-reveal: 0;
    animation: home-page-reveal 600ms cubic-bezier(.35, 0, .4, 1) both;
    -webkit-mask-image: linear-gradient(
      118deg,
      #000 calc(-70% + 170% * var(--home-reveal)),
      transparent calc(170% * var(--home-reveal))
    );
    mask-image: linear-gradient(
      118deg,
      #000 calc(-70% + 170% * var(--home-reveal)),
      transparent calc(170% * var(--home-reveal))
    );
    -webkit-mask-repeat: no-repeat;
    mask-repeat: no-repeat;
    -webkit-mask-size: 100% 100%;
    mask-size: 100% 100%;
  }
}
@keyframes home-page-reveal {
  from { --home-reveal: 0; }
  to { --home-reveal: 1; }
}