:root {
  color: #251f39;
  background: #fbf8ff;
  font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --violet: #7556d9;
  --pink: #ff77b7;
  --mint: #62d2d0;
  --gold: #f2c46b;
  --ink: #251f39;
  --muted: #6f6685;
  --line: rgba(81, 66, 122, 0.16);
  --panel: rgba(255, 255, 255, 0.84);
  --shadow: 0 24px 70px rgba(83, 58, 137, 0.18);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 18% 8%, rgba(255, 119, 183, 0.18), transparent 28%),
    radial-gradient(circle at 86% 12%, rgba(98, 210, 208, 0.18), transparent 26%),
    linear-gradient(180deg, #fff 0%, #f8f2ff 42%, #fff9f0 100%);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px clamp(20px, 5vw, 72px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.62);
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: blur(18px);
}

.brand,
nav,
.hero-actions,
footer {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-weight: 800;
  font-size: 20px;
}

.brand img {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  box-shadow: 0 10px 24px rgba(117, 86, 217, 0.26);
}

nav {
  gap: clamp(12px, 3vw, 30px);
  color: var(--muted);
  font-size: 15px;
}

main {
  overflow: hidden;
}

.hero {
  min-height: 690px;
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(360px, 1.05fr);
  align-items: center;
  gap: clamp(30px, 6vw, 80px);
  padding: 58px clamp(22px, 6vw, 92px) 34px;
}

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

.eyebrow {
  margin: 0 0 12px;
  color: var(--violet);
  font-weight: 800;
  letter-spacing: 0;
}

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

h1 {
  margin-bottom: 18px;
  font-size: clamp(58px, 9vw, 116px);
  line-height: 0.96;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(30px, 4vw, 52px);
  line-height: 1.08;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 21px;
}

.lead {
  max-width: 580px;
  color: var(--muted);
  font-size: 20px;
  line-height: 1.8;
}

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

.primary-action,
.secondary-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  border-radius: 8px;
  font-weight: 800;
}

.primary-action {
  color: white;
  background: linear-gradient(135deg, var(--violet), #b35be4 62%, var(--pink));
  box-shadow: 0 16px 34px rgba(117, 86, 217, 0.24);
}

.secondary-action {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.72);
}

.hero-visual {
  position: relative;
  min-height: 610px;
  display: grid;
  place-items: center;
}

.hero-visual::before {
  content: "";
  position: absolute;
  inset: 7% 4% 6% 10%;
  border-radius: 50%;
  background: conic-gradient(from 210deg, rgba(117, 86, 217, 0.20), rgba(98, 210, 208, 0.20), rgba(242, 196, 107, 0.22), rgba(255, 119, 183, 0.20), rgba(117, 86, 217, 0.20));
  filter: blur(18px);
}

.lightstick {
  position: absolute;
  left: 0;
  top: 12%;
  width: min(38vw, 260px);
  max-width: 46%;
  transform: rotate(-12deg);
  filter: drop-shadow(0 28px 44px rgba(117, 86, 217, 0.28));
}

.phone-shot {
  position: relative;
  width: min(300px, 55vw);
  border-radius: 34px;
  box-shadow: var(--shadow);
}

.section,
.showcase,
.support-band {
  padding: 70px clamp(22px, 6vw, 92px);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 30px;
}

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

.feature-grid article {
  min-height: 210px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: 0 16px 38px rgba(83, 58, 137, 0.08);
}

.feature-grid span {
  display: block;
  margin-bottom: 24px;
  color: var(--pink);
  font-weight: 900;
}

.feature-grid p,
.support-band p {
  color: var(--muted);
  line-height: 1.72;
}

.showcase {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.48), rgba(255, 255, 255, 0.82));
}

.screenshots {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(16px, 3vw, 34px);
  align-items: start;
}

.screenshots img {
  width: 100%;
  border-radius: 30px;
  box-shadow: var(--shadow);
}

.support-band {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  margin: 40px clamp(22px, 6vw, 92px) 76px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(117, 86, 217, 0.12), rgba(255, 255, 255, 0.82)),
    url("./assets/party-stage.png") right center / min(52%, 620px) auto no-repeat;
  box-shadow: var(--shadow);
}

.support-band > div {
  max-width: 660px;
}

footer {
  justify-content: center;
  flex-wrap: wrap;
  gap: 18px;
  padding: 28px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  background: rgba(255, 255, 255, 0.72);
}

.content-page {
  max-width: 940px;
  margin: 0 auto;
  padding: 70px 22px 90px;
}

.content-page h1 {
  font-size: clamp(42px, 7vw, 78px);
}

.content-card {
  padding: clamp(22px, 4vw, 40px);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.84);
  box-shadow: var(--shadow);
}

.content-card h2 {
  margin-top: 28px;
  font-size: 26px;
}

.content-card p,
.content-card li {
  color: var(--muted);
  line-height: 1.78;
}

.content-card ul {
  padding-left: 20px;
}

@media (max-width: 940px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 42px;
  }

  .hero-visual {
    min-height: 520px;
  }

  .feature-grid,
  .screenshots {
    grid-template-columns: 1fr;
  }

  .screenshots img {
    max-width: 360px;
    margin: 0 auto;
  }

  .support-band {
    flex-direction: column;
    align-items: flex-start;
    background-size: 80%;
    background-position: right bottom;
  }
}

@media (max-width: 620px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero-visual {
    min-height: 430px;
  }

  .lightstick {
    width: 160px;
  }
}