:root {
  --ink: oklch(23% 0.055 252);
  --ink-soft: oklch(43% 0.045 250);
  --paper: oklch(98.5% 0.015 92);
  --paper-warm: oklch(96% 0.03 86);
  --line: oklch(90% 0.025 86);
  --red: oklch(62% 0.24 29);
  --orange: oklch(75% 0.17 58);
  --yellow: oklch(90% 0.15 96);
  --green: oklch(70% 0.17 151);
  --blue: oklch(62% 0.18 245);
  --cyan: oklch(79% 0.1 205);
  --shadow-soft: 0 18px 50px rgba(34, 54, 98, 0.12);
  --shadow-photo: 0 28px 70px rgba(33, 47, 81, 0.2);
  --radius: 18px;
  --radius-lg: 28px;
  --max-width: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--paper);
  overflow-x: hidden;
}

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

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

.scroll-progress {
  position: fixed;
  inset: 0 auto auto 0;
  z-index: 100;
  width: var(--scroll-progress, 0%);
  height: 4px;
  background: linear-gradient(90deg, var(--red), var(--orange), var(--green), var(--blue));
}

.site-header,
.hero-inner,
.section,
.academy-section {
  width: min(calc(100% - 40px), var(--max-width));
  margin-inline: auto;
}

.site-header {
  position: fixed;
  top: 18px;
  left: 50%;
  z-index: 80;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 18px;
  min-height: 76px;
  padding: 10px 14px;
  border: 1px solid rgba(255, 255, 255, 0.78);
  border-radius: 20px;
  background: rgba(255, 252, 242, 0.9);
  box-shadow: 0 14px 44px rgba(28, 39, 70, 0.16);
  backdrop-filter: blur(18px) saturate(1.15);
  transform: translateX(-50%);
}

.brand {
  display: flex;
  align-items: center;
  width: clamp(176px, 17vw, 232px);
  padding: 8px 10px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.86);
}

.brand img {
  width: 100%;
  height: auto;
}

.site-nav {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: 4px;
}

.site-nav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 14px;
  border-radius: 999px;
  color: var(--ink);
  font-size: 0.95rem;
  font-weight: 800;
  transition: color 180ms ease, background 180ms ease, transform 180ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.site-nav a.is-active {
  color: white;
  background: linear-gradient(135deg, var(--red), var(--orange));
  transform: translateY(-1px);
}

.menu-toggle {
  display: none;
  align-items: center;
  gap: 4px;
  min-height: 44px;
  padding: 0 14px;
  border: 0;
  border-radius: 999px;
  color: white;
  background: linear-gradient(135deg, var(--red), var(--orange));
  font: inherit;
  font-weight: 900;
}

.menu-toggle span {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: currentColor;
}

.menu-toggle b {
  margin-left: 5px;
  font-size: 0.9rem;
}

.hero {
  position: relative;
  min-height: 100vh;
  display: grid;
  align-items: end;
  isolation: isolate;
  overflow: hidden;
  background: var(--ink);
}

.hero-bg,
.hero-shade {
  position: absolute;
  inset: 0;
}

.hero-bg {
  z-index: -3;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-shade {
  z-index: -2;
  background:
    linear-gradient(90deg, rgba(9, 17, 33, 0.76) 0%, rgba(9, 17, 33, 0.48) 44%, rgba(9, 17, 33, 0.14) 100%),
    linear-gradient(0deg, rgba(7, 13, 26, 0.58) 0%, rgba(7, 13, 26, 0) 45%);
}

.hero-inner {
  display: grid;
  gap: clamp(34px, 7vw, 76px);
  padding: clamp(150px, 18vh, 210px) 0 clamp(34px, 7vh, 68px);
}

.hero-copy {
  max-width: 760px;
  color: white;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--red);
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0;
}

.hero .eyebrow,
.academy-section .eyebrow {
  color: var(--yellow);
}

.hero h1,
.section-head h2,
.academy-copy h2 {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 800;
  line-height: 1;
  letter-spacing: 0;
}

.hero h1 {
  max-width: 720px;
  font-size: clamp(3.6rem, 9vw, 7.4rem);
  text-shadow: 0 18px 48px rgba(0, 0, 0, 0.24);
}

.hero-slogan {
  display: inline-flex;
  align-items: center;
  min-height: 54px;
  margin: 20px 0 0;
  padding: 0 24px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--red), var(--orange));
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.22);
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: clamp(1.18rem, 2vw, 1.56rem);
  font-weight: 900;
}

.hero-lead {
  max-width: 660px;
  margin: 22px 0 0;
  color: rgba(255, 255, 255, 0.9);
  font-size: clamp(1.06rem, 1.8vw, 1.22rem);
  font-weight: 700;
  line-height: 1.86;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 0 22px;
  border-radius: 999px;
  font-weight: 900;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button.primary {
  color: white;
  background: linear-gradient(135deg, var(--red), var(--orange));
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.22);
}

.button.quiet {
  color: white;
  background: rgba(255, 255, 255, 0.18);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.32);
  backdrop-filter: blur(8px);
}

.hero-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: rgba(255, 252, 242, 0.94);
  box-shadow: 0 20px 58px rgba(0, 0, 0, 0.2);
}

.hero-facts article {
  padding: 22px 24px;
  border-right: 1px solid var(--line);
}

.hero-facts article:last-child {
  border-right: 0;
}

.hero-facts span,
.space-feature span,
.academy-program span,
.academy-panel span {
  display: block;
  color: var(--red);
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 0.92rem;
  font-weight: 800;
}

.hero-facts strong {
  display: block;
  margin-top: 5px;
  font-size: clamp(1.04rem, 1.6vw, 1.28rem);
  line-height: 1.28;
}

.section,
.academy-section {
  padding: clamp(76px, 10vw, 128px) 0;
}

#story,
#play,
#academy {
  scroll-margin-top: 118px;
}

.section-head {
  max-width: 860px;
  margin-bottom: 34px;
}

.section-head.split {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(280px, 0.48fr);
  gap: 36px;
  align-items: end;
  max-width: none;
}

.section-head h2,
.academy-copy h2 {
  font-size: clamp(2.4rem, 5vw, 4.7rem);
}

.section-head p:not(.eyebrow),
.story-copy p,
.story-proof p,
.space-feature p,
.academy-copy p,
.academy-learning-head p,
.academy-programs-head p,
.academy-program p,
.academy-panel p {
  color: var(--ink-soft);
  line-height: 1.8;
}

.story-section {
  display: grid;
  gap: 6px;
}

.story-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(300px, 0.86fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: start;
}

.story-copy {
  display: grid;
  gap: 18px;
  max-width: 720px;
  font-size: 1.08rem;
}

.story-copy p {
  margin: 0;
}

.story-proof {
  display: grid;
  gap: 14px;
}

.story-proof article {
  padding: 22px 0 22px 24px;
  border-left: 5px solid var(--orange);
}

.story-proof article:nth-child(2) {
  border-left-color: var(--blue);
}

.story-proof article:nth-child(3) {
  border-left-color: var(--green);
}

.story-proof span {
  color: var(--red);
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 800;
}

.story-proof h3 {
  margin: 8px 0 0;
  font-size: 1.45rem;
}

.story-proof p {
  margin: 8px 0 0;
}

.play-section {
  width: 100%;
  max-width: none;
  padding-inline: max(20px, calc((100vw - var(--max-width)) / 2));
  background: oklch(96.5% 0.026 88);
}

.space-showcase {
  display: grid;
  gap: 22px;
}

.space-feature {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.18fr) minmax(320px, 0.72fr);
  overflow: hidden;
  min-height: 560px;
  border-radius: var(--radius-lg);
  background: var(--ink);
  box-shadow: var(--shadow-photo);
}

.space-feature img {
  width: 100%;
  height: 100%;
  min-height: 560px;
  object-fit: cover;
}

.space-feature div {
  display: grid;
  align-content: end;
  padding: clamp(28px, 5vw, 54px);
  background: var(--paper);
}

.space-feature h3 {
  margin: 12px 0 0;
  font-size: clamp(2rem, 4vw, 3.6rem);
  line-height: 1.05;
}

.space-feature p {
  margin: 16px 0 0;
}

.space-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.space-strip figure,
.academy-photo,
.academy-moments figure {
  position: relative;
  overflow: hidden;
  margin: 0;
  border-radius: var(--radius);
  background: white;
  box-shadow: var(--shadow-soft);
}

.space-strip img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.space-strip figcaption {
  position: absolute;
  left: 14px;
  bottom: 14px;
  padding: 8px 12px;
  border-radius: 999px;
  color: white;
  background: rgba(8, 17, 32, 0.72);
  font-weight: 900;
  backdrop-filter: blur(8px);
}

.academy-section {
  display: grid;
  gap: clamp(28px, 5vw, 54px);
}

.academy-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.72fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: end;
}

.academy-copy {
  max-width: 760px;
}

.academy-section .eyebrow {
  color: var(--red);
}

.academy-subhead {
  margin: 12px 0 0;
  color: var(--blue);
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 1.35rem;
  font-weight: 800;
}

.academy-copy p {
  margin: 18px 0 0;
}

.academy-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.academy-facts li {
  min-height: 132px;
  padding: 20px;
  border-radius: var(--radius);
  background: white;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-soft);
}

.academy-facts strong {
  display: block;
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 1.18rem;
  line-height: 1.15;
}

.academy-facts span {
  display: block;
  margin-top: 8px;
  color: var(--ink-soft);
  line-height: 1.58;
}

.academy-feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.academy-photo img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.academy-photo figcaption {
  padding: 20px;
}

.academy-photo strong {
  display: block;
  font-size: 1.32rem;
  line-height: 1.18;
}

.academy-photo span {
  display: block;
  margin-top: 8px;
  color: var(--ink-soft);
  line-height: 1.62;
}

.academy-moments {
  display: grid;
  grid-template-columns: repeat(7, minmax(140px, 1fr));
  gap: 12px;
  overflow-x: auto;
  padding-bottom: 8px;
  scrollbar-width: thin;
}

.academy-moments figure {
  min-width: 140px;
  box-shadow: none;
}

.academy-moments img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.academy-learning,
.academy-programs {
  display: grid;
  gap: 22px;
  padding-top: clamp(10px, 2vw, 20px);
  border-top: 1px solid var(--line);
}

.academy-learning-head,
.academy-programs-head {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(280px, 0.5fr);
  gap: 28px;
  align-items: end;
}

.academy-learning-head h3,
.academy-programs-head h3,
.academy-program h3,
.academy-panel h3 {
  margin: 8px 0 0;
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.08;
  letter-spacing: 0;
}

.academy-learning-head h3,
.academy-programs-head h3 {
  font-size: clamp(2rem, 4vw, 3.3rem);
}

.academy-learning-head p,
.academy-programs-head p {
  margin: 0;
}

.academy-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.academy-tab {
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink);
  background: white;
  font: inherit;
  font-weight: 900;
  transition: color 180ms ease, background 180ms ease, transform 180ms ease, border-color 180ms ease;
}

.academy-tab:hover,
.academy-tab:focus-visible,
.academy-tab.is-active {
  color: white;
  border-color: transparent;
  background: linear-gradient(135deg, var(--red), var(--orange));
  transform: translateY(-1px);
}

.academy-panels {
  position: relative;
  min-height: 190px;
}

.academy-panel {
  position: absolute;
  inset: 0;
  padding: 26px;
  border-radius: var(--radius);
  color: white;
  background:
    linear-gradient(135deg, rgba(234, 67, 55, 0.95), rgba(243, 139, 47, 0.92)),
    var(--red);
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity 220ms ease, transform 220ms ease;
}

.academy-panel.is-active {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.academy-panel span {
  color: rgba(255, 255, 255, 0.82);
}

.academy-panel h3 {
  font-size: clamp(1.7rem, 3vw, 2.25rem);
}

.academy-panel p {
  max-width: 720px;
  color: rgba(255, 255, 255, 0.9);
}

.academy-program-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.academy-program {
  padding: 22px;
  border-radius: var(--radius);
  background: white;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-soft);
}

.academy-program h3 {
  font-size: 1.45rem;
}

.academy-program p {
  margin: 12px 0 0;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 760ms cubic-bezier(0.22, 1, 0.36, 1),
    transform 760ms cubic-bezier(0.22, 1, 0.36, 1);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1050px) {
  .section-head.split,
  .story-layout,
  .space-feature,
  .academy-hero,
  .academy-learning-head,
  .academy-programs-head {
    grid-template-columns: 1fr;
  }

  .space-feature {
    min-height: auto;
  }

  .space-feature img {
    min-height: auto;
    aspect-ratio: 16 / 10;
  }

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

@media (max-width: 820px) {
  .site-header {
    grid-template-columns: auto auto;
    width: min(calc(100% - 24px), var(--max-width));
  }

  .menu-toggle {
    display: inline-flex;
    justify-self: end;
  }

  .site-nav {
    grid-column: 1 / -1;
    justify-self: stretch;
    display: none;
    gap: 8px;
    padding-top: 8px;
  }

  .site-nav.is-open {
    display: grid;
  }

  .site-nav a {
    justify-content: flex-start;
    min-height: 46px;
  }

  .hero-facts,
  .space-strip,
  .academy-feature-grid,
  .academy-facts {
    grid-template-columns: 1fr;
  }

  .hero-facts article {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .hero-facts article:last-child {
    border-bottom: 0;
  }

  .space-strip img,
  .academy-moments img {
    aspect-ratio: 16 / 9;
  }
}

@media (max-width: 560px) {
  .site-header,
  .hero-inner,
  .section,
  .academy-section {
    width: min(calc(100% - 24px), var(--max-width));
  }

  .site-header {
    top: 12px;
    min-height: 68px;
    padding: 8px;
    border-radius: 16px;
  }

  .brand {
    width: min(58vw, 190px);
    padding: 6px 8px;
  }

  .hero-inner {
    padding-top: 128px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .button {
    width: 100%;
  }

  .section,
  .academy-section {
    padding: 68px 0;
  }

  .story-proof article {
    padding-left: 18px;
  }

  .space-feature div,
  .academy-panel {
    padding: 22px;
  }

  .academy-program-grid {
    grid-template-columns: 1fr;
  }

  .academy-panels {
    min-height: 0;
  }

  .academy-panel {
    position: relative;
    display: none;
  }

  .academy-panel.is-active {
    display: block;
  }
}

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

  .button,
  .site-nav a,
  .academy-tab,
  [data-reveal] {
    transition: none !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}