:root {
  --dark: #05070d;
  --ink: #111827;
  --muted: #5f6876;
  --accent: #1aa7ff;
  --gold: #f5c84b;
  --paper: #f7f9fc;
  --white: #ffffff;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  background: var(--dark);
}

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

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  width: 100%;
  height: 72px;
  padding: 0 clamp(20px, 5vw, 72px);
  color: var(--white);
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.56), rgba(0, 0, 0, 0));
  transition: background 0.25s ease, color 0.25s ease, border-color 0.25s ease;
}

.site-header.is-light {
  color: var(--ink);
  border-bottom: 1px solid rgba(17, 24, 39, 0.08);
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(16px);
}

.top-nav {
  display: flex;
  gap: clamp(22px, 3vw, 44px);
  margin-right: clamp(18px, 3vw, 34px);
  font-size: 15px;
}

.top-nav a {
  opacity: 0.78;
  transition: opacity 0.2s ease;
}

.top-nav a:hover {
  opacity: 1;
}

.header-action {
  min-width: 96px;
  padding: 10px 18px;
  color: var(--white);
  text-align: center;
  background: rgba(255, 255, 255, 0.16);
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 999px;
}

.site-header.is-light .header-action {
  color: var(--ink);
  background: rgba(17, 24, 39, 0.04);
  border-color: rgba(17, 24, 39, 0.14);
}

.snap-page {
  height: 100vh;
  overflow-y: auto;
  scroll-snap-type: y mandatory;
}

.panel {
  position: relative;
  min-height: 100vh;
  padding: 112px clamp(22px, 6vw, 92px) 64px;
  scroll-snap-align: start;
  overflow: hidden;
}

.kicker {
  margin: 0 0 16px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 980px;
  margin-bottom: 22px;
  font-family: Arial, "Microsoft YaHei", sans-serif;
  font-size: clamp(54px, 10vw, 142px);
  font-weight: 900;
  line-height: 0.9;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(38px, 6vw, 82px);
  line-height: 1.04;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 26px;
}

.hero {
  display: grid;
  align-items: end;
  color: var(--white);
}

.hero-video,
.hero-film {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-video {
  object-fit: cover;
  filter: contrast(1.08) saturate(1.08);
  image-rendering: auto;
}

.hero-film {
  background:
    linear-gradient(90deg, rgba(0, 0, 0, 0.62), rgba(0, 0, 0, 0.24) 48%, rgba(0, 0, 0, 0.42)),
    linear-gradient(180deg, rgba(0, 0, 0, 0.34), rgba(0, 0, 0, 0.12) 42%, rgba(0, 0, 0, 0.62));
  backdrop-filter: saturate(1.08) contrast(1.06);
}

.hero-content {
  position: relative;
  max-width: 980px;
  padding-bottom: clamp(44px, 8vh, 92px);
}

.hero-copy {
  max-width: 660px;
  margin-bottom: 34px;
  color: rgba(255, 255, 255, 0.84);
  font-size: 18px;
  line-height: 1.8;
}

.primary-link,
.text-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 24px;
  font-weight: 700;
  border-radius: 999px;
}

.primary-link {
  color: #06101c;
  background: var(--white);
}

.primary-link.dark {
  color: var(--white);
  background: var(--ink);
}

.text-link {
  color: var(--ink);
  border: 1px solid rgba(17, 24, 39, 0.16);
}

.scroll-cue {
  position: absolute;
  left: 50%;
  bottom: 30px;
  width: 28px;
  height: 44px;
  padding: 0;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.58);
  border-radius: 999px;
  transform: translateX(-50%);
  cursor: pointer;
}

.scroll-cue span {
  display: block;
  width: 4px;
  height: 8px;
  margin: 10px auto 0;
  background: var(--white);
  border-radius: 999px;
  animation: cue 1.4s infinite ease-in-out;
}

@keyframes cue {
  0%,
  100% {
    transform: translateY(0);
    opacity: 0.45;
  }

  50% {
    transform: translateY(12px);
    opacity: 1;
  }
}

.programs {
  display: grid;
  align-items: end;
  color: var(--white);
  background: #05070d;
}

.programs::before {
  position: absolute;
  inset: 0;
  content: "";
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.06) 1px, transparent 1px),
    linear-gradient(180deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 88px 88px;
  mask-image: linear-gradient(90deg, rgba(0, 0, 0, 0.7), transparent 70%);
}

.program-copy,
.program-slider {
  position: relative;
}

.program-copy {
  z-index: 3;
  max-width: 620px;
  padding-bottom: clamp(42px, 6vh, 76px);
}

.program-copy p {
  color: rgba(255, 255, 255, 0.74);
  font-size: 17px;
  line-height: 1.85;
}

.program-controls {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-top: 36px;
}

.program-arrow {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  color: var(--white);
  font-size: 34px;
  line-height: 1;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 50%;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease;
}

.program-arrow:hover {
  background: rgba(255, 255, 255, 0.22);
  transform: translateY(-2px);
}

.program-count {
  min-width: 84px;
  font-weight: 800;
}

.program-count span {
  font-size: 30px;
}

.program-count em {
  color: rgba(255, 255, 255, 0.42);
  font-style: normal;
}

.program-slider {
  position: absolute;
  inset: 0;
  z-index: 1;
  height: auto;
  min-height: 0;
}

.program-slide {
  position: absolute;
  inset: 0;
  isolation: isolate;
  overflow: hidden;
  color: var(--white);
  background: #111827;
  border-radius: 0;
  box-shadow: none;
  opacity: 0;
  transform: scale(1.04);
  pointer-events: none;
  transition: opacity 0.75s ease, transform 1.2s cubic-bezier(0.2, 0.75, 0.15, 1);
}

.program-slide.is-active {
  opacity: 1;
  transform: scale(1);
  pointer-events: auto;
}

.program-slide.is-leaving {
  opacity: 0;
  transform: scale(1.02);
}

.program-slide::after {
  position: absolute;
  inset: 0;
  z-index: -1;
  content: "";
  background:
    linear-gradient(90deg, rgba(0, 0, 0, 0.78), rgba(0, 0, 0, 0.36) 48%, rgba(0, 0, 0, 0.18)),
    linear-gradient(0deg, rgba(0, 0, 0, 0.74), rgba(0, 0, 0, 0.18) 56%, rgba(0, 0, 0, 0.42));
}

.program-slide img {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.08);
  transition: transform 5.5s ease;
}

.program-slide.is-active img {
  transform: scale(1);
}

.slide-text {
  position: absolute;
  right: clamp(28px, 6vw, 86px);
  bottom: clamp(44px, 8vh, 94px);
  left: auto;
  max-width: 430px;
  text-align: right;
}

.slide-text span {
  display: block;
  margin-bottom: 16px;
  color: var(--gold);
  font-size: 42px;
  font-weight: 900;
}

.slide-text p {
  color: rgba(255, 255, 255, 0.78);
  font-size: 16px;
  line-height: 1.8;
}

.future {
  display: grid;
  align-items: center;
  color: var(--white);
  background: #05070d;
}

.future-video,
.future-film {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.future-video {
  object-fit: cover;
  filter: contrast(1.06) saturate(1.08);
}

.future-film {
  content: "";
  background:
    linear-gradient(90deg, rgba(3, 6, 12, 0.78), rgba(3, 6, 12, 0.45) 52%, rgba(3, 6, 12, 0.72)),
    linear-gradient(180deg, rgba(3, 6, 12, 0.42), rgba(3, 6, 12, 0.78));
}

.future-content {
  position: relative;
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
}

.future-content h2 {
  max-width: 900px;
  margin-right: auto;
  margin-left: auto;
}

.future-lead {
  max-width: 860px;
  margin: 32px auto 0;
  color: rgba(255, 255, 255, 0.9);
  font-size: clamp(22px, 2.7vw, 36px);
  font-weight: 700;
  line-height: 1.5;
}

.future-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: clamp(34px, 6vh, 70px);
  text-align: left;
}

.future-grid article {
  min-height: 230px;
  padding: 0 26px 0 0;
  border-right: 1px solid rgba(255, 255, 255, 0.28);
}

.future-grid article:last-child {
  border-right: 0;
}

.future-grid span {
  display: block;
  margin-bottom: 28px;
  color: var(--gold);
  font-size: 32px;
  font-weight: 900;
  line-height: 1;
}

.future-grid p {
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.76);
  font-size: 16px;
  line-height: 1.85;
}

.events {
  display: grid;
  grid-template-columns: minmax(280px, 0.86fr) minmax(340px, 1fr);
  gap: clamp(28px, 6vw, 86px);
  align-items: center;
  background: #f7f9fc;
}

.events-backdrop {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(115deg, rgba(255, 255, 255, 0.92), rgba(255, 255, 255, 0.7) 42%, rgba(255, 255, 255, 0.86)),
    url("./assets/business-bridge.png") center / cover;
}

.events-backdrop::after {
  position: absolute;
  inset: 0;
  content: "";
  background:
    radial-gradient(circle at 78% 18%, rgba(26, 167, 255, 0.22), transparent 26%),
    radial-gradient(circle at 18% 82%, rgba(245, 200, 75, 0.28), transparent 28%),
    linear-gradient(90deg, rgba(255, 255, 255, 0.82), rgba(255, 255, 255, 0.42));
}

.events-copy,
.event-board {
  position: relative;
}

.events-copy {
  max-width: 620px;
}

.events-copy p {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.85;
}

.event-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.event-board {
  display: grid;
  gap: 16px;
}

.event-item {
  display: grid;
  grid-template-columns: 72px 1fr;
  column-gap: 24px;
  align-items: start;
  min-height: 144px;
  padding: 26px;
  border: 1px solid rgba(17, 24, 39, 0.1);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.76);
  box-shadow: 0 18px 60px rgba(17, 24, 39, 0.08);
  backdrop-filter: blur(14px);
}

.event-item span {
  grid-row: 1 / span 2;
  color: var(--accent);
  font-size: 34px;
  font-weight: 900;
  line-height: 1;
}

.event-item p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.75;
}

.side-dots {
  position: fixed;
  top: 50%;
  right: clamp(18px, 3vw, 36px);
  z-index: 18;
  display: grid;
  gap: 14px;
  transform: translateY(-50%);
}

.side-dots a {
  width: 8px;
  height: 8px;
  background: rgba(255, 255, 255, 0.48);
  border-radius: 999px;
  outline: 1px solid rgba(0, 0, 0, 0.12);
  transition: height 0.2s ease, background 0.2s ease;
}

.side-dots a.active {
  height: 28px;
  background: var(--accent);
}

@media (max-width: 920px) {
  .site-header {
    height: 64px;
    justify-content: space-between;
  }

  .top-nav {
    gap: 16px;
    margin-right: 10px;
    font-size: 14px;
  }

  .header-action {
    min-width: auto;
    padding: 9px 14px;
    font-size: 14px;
  }

  .snap-page {
    scroll-snap-type: none;
  }

  .panel {
    min-height: auto;
    padding-top: 96px;
  }

  .hero {
    min-height: 100vh;
  }

  .programs,
  .events,
  .future-grid {
    grid-template-columns: 1fr;
  }

  .future {
    min-height: 100vh;
  }

  .program-copy {
    padding-bottom: 48px;
  }

  .slide-text {
    right: 24px;
    bottom: 42px;
    max-width: 320px;
  }

  .future-grid {
    text-align: left;
  }

  .future-grid article,
  .future-grid article:last-child {
    padding: 0 0 22px;
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.24);
  }

  .future-grid article:last-child {
    border-bottom: 0;
  }

  .event-item {
    grid-template-columns: 54px 1fr;
    padding: 22px;
  }

  .side-dots {
    display: none;
  }
}

@media (max-width: 620px) {
  .site-header {
    justify-content: flex-end;
  }

  .top-nav {
    display: none;
  }

  .panel {
    padding-right: 18px;
    padding-left: 18px;
  }

  h1 {
    font-size: 52px;
  }

  h2 {
    font-size: 34px;
  }

  .hero-copy,
  .program-copy p,
  .events-copy p,
  .future-grid p {
    font-size: 15px;
  }

  .program-controls {
    margin-top: 24px;
  }

  .slide-text span {
    font-size: 34px;
  }

  .slide-text {
    right: 18px;
    bottom: 38px;
    left: 18px;
    max-width: none;
    text-align: left;
  }

  .future-content {
    text-align: left;
  }

  .future-lead {
    margin-top: 22px;
  }

  .future-grid article {
    min-height: auto;
  }

  .event-item {
    grid-template-columns: 1fr;
  }

  .event-item span {
    grid-row: auto;
  }
}