:root {
  --ink: #2e2348;
  --muted: #6f6386;
  --cream: #fff7d9;
  --pink: #ff6f91;
  --yellow: #ffd447;
  --blue: #42b7ff;
  --green: #20c997;
  --white: #ffffff;
  --shadow: 0 16px 32px rgba(67, 42, 105, 0.18);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

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

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

.site-header {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 14px clamp(16px, 5vw, 56px);
  transition: background 160ms ease;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-weight: 900;
  color: var(--white);
  text-shadow: 0 2px 8px rgba(46, 35, 72, 0.28);
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 3px solid var(--white);
  border-radius: 50%;
  background: var(--pink);
  color: var(--white);
  font-size: 15px;
  box-shadow: 0 6px 0 rgba(46, 35, 72, 0.18);
}

.brand-text {
  font-size: 18px;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 14px;
  font-size: 15px;
  font-weight: 900;
}

.site-nav a {
  padding: 9px 13px;
  border: 2px solid rgba(255, 255, 255, 0.78);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.34);
  color: var(--white);
  box-shadow: 0 5px 0 rgba(46, 35, 72, 0.14);
  text-shadow: 0 2px 6px rgba(46, 35, 72, 0.24);
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 2px solid rgba(255, 255, 255, 0.82);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.34);
  color: var(--white);
  box-shadow: 0 5px 0 rgba(46, 35, 72, 0.16);
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  border-radius: 99px;
  background: currentColor;
}

.hero {
  position: relative;
  min-height: 100svh;
  overflow: hidden;
  background: #7fdcff;
}

.hero-art {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-shade {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(46, 35, 72, 0.08), rgba(46, 35, 72, 0.08) 45%, rgba(46, 35, 72, 0.48)),
    linear-gradient(90deg, rgba(46, 35, 72, 0.42), rgba(46, 35, 72, 0.04) 54%, rgba(46, 35, 72, 0.1));
}

.hero-content {
  position: relative;
  z-index: 1;
  display: flex;
  min-height: 100svh;
  width: min(680px, 100%);
  flex-direction: column;
  justify-content: flex-end;
  padding: 112px clamp(18px, 6vw, 64px) clamp(34px, 8vw, 72px);
  color: var(--white);
}

.tag {
  display: inline-flex;
  width: fit-content;
  margin: 0 0 12px;
  padding: 7px 12px;
  border-radius: 999px;
  background: var(--yellow);
  color: #5d3c00;
  font-size: 14px;
  font-weight: 900;
  box-shadow: 0 5px 0 rgba(46, 35, 72, 0.14);
}

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

h1 {
  margin-bottom: 12px;
  font-size: clamp(42px, 10vw, 82px);
  line-height: 0.98;
  letter-spacing: 0;
  text-shadow: 0 6px 0 rgba(46, 35, 72, 0.18), 0 12px 28px rgba(46, 35, 72, 0.34);
}

.hero-content p:not(.tag) {
  max-width: 520px;
  margin-bottom: 18px;
  font-size: clamp(16px, 2.5vw, 20px);
  font-weight: 800;
  line-height: 1.55;
  text-shadow: 0 3px 12px rgba(46, 35, 72, 0.38);
}

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

.play-button,
.ghost-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 20px;
  border-radius: 999px;
  font-weight: 900;
  box-shadow: 0 7px 0 rgba(46, 35, 72, 0.2);
}

.play-button {
  background: var(--pink);
  color: var(--white);
}

.ghost-button {
  border: 2px solid rgba(255, 255, 255, 0.82);
  background: rgba(255, 255, 255, 0.2);
  color: var(--white);
}

.simple-section,
.poster-section,
.contact-section {
  padding: clamp(54px, 9vw, 94px) clamp(18px, 6vw, 72px);
}

.simple-section {
  background:
    radial-gradient(circle at top left, rgba(255, 111, 145, 0.24), transparent 34%),
    var(--cream);
}

.simple-section h2,
.poster-section h2,
.contact-section h2 {
  max-width: 780px;
  margin-bottom: 24px;
  font-size: clamp(30px, 5vw, 54px);
  line-height: 1.08;
}

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

.feature-list article {
  padding: 24px;
  border: 3px solid var(--white);
  border-radius: 24px;
  background: var(--white);
  box-shadow: var(--shadow), 0 7px 0 rgba(46, 35, 72, 0.12);
}

.feature-list span {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  margin-bottom: 16px;
  border-radius: 50%;
  background: var(--blue);
  color: var(--white);
  font-weight: 900;
}

.feature-list h3 {
  margin-bottom: 8px;
  font-size: 23px;
}

.feature-list p,
.contact-section p {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.7;
}

.poster-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.75fr);
  gap: 28px;
  align-items: center;
  background: linear-gradient(135deg, #dff7ff, #fff0bf);
}

.mode-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.mode-chips span {
  padding: 13px 16px;
  border: 3px solid var(--white);
  border-radius: 999px;
  background: var(--green);
  color: var(--white);
  font-weight: 900;
  box-shadow: 0 6px 0 rgba(46, 35, 72, 0.14);
}

.contact-section {
  background: var(--white);
}

.contact-section p {
  margin-bottom: 8px;
  font-weight: 800;
}

.site-footer {
  padding: 20px;
  background: var(--ink);
  color: rgba(255, 255, 255, 0.82);
  text-align: center;
  font-size: 14px;
}

@media (max-width: 780px) {
  .site-header {
    padding: 12px 14px;
  }

  .brand-mark {
    width: 38px;
    height: 38px;
    font-size: 14px;
  }

  .brand-text {
    font-size: 16px;
  }

  .nav-toggle {
    display: block;
    border: 0;
    background: rgba(255, 255, 255, 0.2);
    box-shadow: none;
  }

  .nav-toggle span {
    width: 5px;
    height: 5px;
    margin: 3px auto;
    border-radius: 50%;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 4px);
    right: 14px;
    left: auto;
    display: none;
    width: 176px;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    overflow: hidden;
    padding: 6px 0;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.96);
    box-shadow: 0 10px 28px rgba(46, 35, 72, 0.22);
    backdrop-filter: blur(10px);
  }

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

  .site-nav a {
    padding: 10px 16px;
    border: 0;
    border-radius: 0;
    background: transparent;
    color: var(--ink);
    box-shadow: none;
    text-align: left;
    text-shadow: none;
  }

  .site-nav a:hover,
  .site-nav a:focus-visible {
    background: rgba(46, 35, 72, 0.07);
  }

  .hero {
    min-height: 100svh;
  }

  .hero-art {
    object-position: center;
  }

  .hero-shade {
    background: linear-gradient(180deg, rgba(46, 35, 72, 0.02), rgba(46, 35, 72, 0.02) 50%, rgba(46, 35, 72, 0.56));
  }

  .hero-content {
    min-height: 100svh;
    padding: 88px 18px 28px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .play-button,
  .ghost-button {
    width: 100%;
  }

  .feature-list,
  .poster-section {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 420px) {
  h1 {
    font-size: 44px;
  }

  .hero-content p:not(.tag) {
    font-size: 15px;
  }

  .simple-section,
  .poster-section,
  .contact-section {
    padding-right: 16px;
    padding-left: 16px;
  }
}