:root {
  color-scheme: light;
  --ink: #21172c;
  --muted: #675d76;
  --deep: #150028;
  --deep-2: #270047;
  --violet: #8b54d8;
  --lavender: #f4ecff;
  --gold: #d7a841;
  --line: #06c755;
  --paper: #ffffff;
  --max-width: 640px;
}

* {
  box-sizing: border-box;
}

html {
  background: #eceaf2;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  font-family: "Hiragino Kaku Gothic ProN", "Noto Sans JP", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: linear-gradient(90deg, #efedf6 0, #ffffff 18%, #ffffff 82%, #efedf6 100%);
  padding-bottom: calc(82px + env(safe-area-inset-bottom));
}

a {
  color: inherit;
}

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

.page-shell,
.site-footer {
  width: min(100%, var(--max-width));
  margin: 0 auto;
  background: var(--paper);
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 30px 18px 34px;
  color: #ffffff;
  background:
    linear-gradient(180deg, rgba(19, 0, 43, 0.28), rgba(19, 0, 43, 0.92) 82%),
    url("assets/studio/believe-star-bg.jpg") center top / cover;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(232, 188, 86, 0.16), transparent 24%, transparent 76%, rgba(174, 107, 255, 0.2)),
    linear-gradient(180deg, transparent 0, rgba(9, 0, 28, 0.62) 100%);
  pointer-events: none;
}

.hero-copy,
.hero-visual {
  position: relative;
  z-index: 1;
}

.hero-copy {
  text-align: center;
}

.hero-tag {
  width: fit-content;
  max-width: 100%;
  margin: 0 auto 16px;
  padding: 7px 13px;
  border: 1px solid rgba(222, 181, 82, 0.62);
  border-radius: 999px;
  color: #f8e8bb;
  background: rgba(25, 0, 47, 0.58);
  font-size: 13px;
  font-weight: 800;
  line-height: 1.4;
  letter-spacing: 0;
}

.hero h1 {
  margin: 0;
  font-family: "Hiragino Mincho ProN", "Yu Mincho", serif;
  font-size: clamp(36px, 10vw, 58px);
  line-height: 1.18;
  letter-spacing: 0;
  text-shadow: 0 4px 18px rgba(0, 0, 0, 0.42);
}

.inline-line-icon {
  display: inline-grid;
  min-width: 1.92em;
  height: 1.05em;
  margin: 0 0.08em;
  place-items: center;
  border-radius: 0.26em;
  color: #ffffff;
  background: #06c755;
  box-shadow: 0 0.08em 0 #039f42, 0 0.16em 0.4em rgba(0, 0, 0, 0.22);
  font-family: "Hiragino Kaku Gothic ProN", "Noto Sans JP", system-ui, sans-serif;
  font-size: 0.62em;
  font-weight: 900;
  line-height: 1;
  vertical-align: 0.08em;
  text-shadow: none;
}

.lead {
  width: min(100%, 480px);
  margin: 18px auto 0;
  color: rgba(255, 255, 255, 0.94);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.75;
}

.line-button {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: min(100%, 530px);
  min-height: 64px;
  margin: 0 auto;
  padding: 12px 18px;
  border: 3px solid #d9ffdf;
  border-radius: 14px;
  color: #ffffff;
  background: linear-gradient(180deg, #16df6e, #05ad45);
  box-shadow: 0 6px 0 #027d33, 0 14px 28px rgba(6, 199, 85, 0.24);
  font-size: clamp(18px, 5vw, 24px);
  font-weight: 900;
  line-height: 1.2;
  text-decoration: none;
}

.line-button:active {
  transform: translateY(3px);
  box-shadow: 0 3px 0 #027d33, 0 10px 20px rgba(6, 199, 85, 0.2);
}

.line-icon {
  display: inline-grid;
  min-width: 48px;
  height: 28px;
  place-items: center;
  border-radius: 999px;
  color: var(--line);
  background: #ffffff;
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0;
}

.hero-button {
  margin-top: 24px;
}

.hero-visual {
  width: min(100%, 500px);
  margin: 24px auto 0;
  overflow: hidden;
  border: 1px solid rgba(223, 184, 92, 0.48);
  border-radius: 8px;
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.32);
}

.section-pad {
  padding: 52px 22px;
}

.section-kicker {
  margin: 0 0 12px;
  color: var(--violet);
  font-size: 14px;
  font-weight: 900;
  letter-spacing: 0;
  text-align: center;
}

.section-kicker.light {
  color: #f7dd9c;
}

h2 {
  margin: 0;
  font-family: "Hiragino Mincho ProN", "Yu Mincho", serif;
  font-size: clamp(27px, 7.4vw, 38px);
  line-height: 1.42;
  letter-spacing: 0;
  text-align: center;
}

.section-lead {
  width: min(100%, 500px);
  margin: 18px auto 28px;
  color: var(--muted);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.85;
  text-align: center;
}

.intro {
  background: linear-gradient(180deg, #ffffff 0%, #f7f0ff 100%);
}

.studio-shot {
  max-height: 1220px;
  margin: 0;
  overflow: hidden;
  border: 1px solid rgba(138, 84, 216, 0.2);
  border-radius: 8px;
  background: #f7f0ff;
  box-shadow: 0 16px 34px rgba(69, 30, 95, 0.14);
}

.studio-shot img {
  width: 100%;
}

.cta-strip {
  padding: 18px 20px;
  background: #ffffff;
}

.cta-strip.mid {
  background:
    linear-gradient(180deg, rgba(24, 0, 48, 0), rgba(24, 0, 48, 0.72)),
    url("assets/studio/believe-star-bg.jpg") center / cover;
}

.cta-strip.final {
  padding-top: 28px;
  padding-bottom: 34px;
  background: linear-gradient(180deg, #f8f1ff, #ffffff);
}

.concerns {
  background: linear-gradient(180deg, #ffffff 0%, #fbf7ff 100%);
}

.bubble-list {
  display: grid;
  gap: 12px;
  margin-top: 30px;
}

.bubble-list p {
  margin: 0;
  padding: 15px 18px;
  border: 1px solid rgba(138, 84, 216, 0.12);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: 0 8px 20px rgba(82, 66, 120, 0.1);
  color: #353047;
  font-size: 17px;
  font-weight: 800;
  text-align: center;
}

.line-benefits {
  color: #ffffff;
  background:
    linear-gradient(180deg, rgba(17, 0, 38, 0.9), rgba(36, 0, 70, 0.92)),
    url("assets/studio/believe-star-bg.jpg") center / cover;
}

.line-benefits h2 {
  color: #ffffff;
  text-shadow: 0 4px 16px rgba(0, 0, 0, 0.34);
}

.feature-grid,
.steps {
  display: grid;
  gap: 16px;
  margin-top: 32px;
}

.feature-grid article,
.steps article {
  padding: 22px 20px;
  border: 1px solid rgba(215, 168, 65, 0.22);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 10px 24px rgba(37, 0, 58, 0.12);
}

.line-benefits .feature-grid article {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
}

.feature-grid span,
.step-num {
  display: inline-block;
  margin-bottom: 10px;
  color: var(--gold);
  font-weight: 900;
}

h3 {
  margin: 0 0 8px;
  font-size: 21px;
  line-height: 1.35;
  letter-spacing: 0;
}

.feature-grid p,
.steps p,
.notice p,
figcaption {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}

.official {
  background: linear-gradient(180deg, #fff 0%, #f4ecff 100%);
}

.official-images {
  display: grid;
  gap: 16px;
  margin-top: 30px;
}

.official-images figure {
  margin: 0;
  overflow: hidden;
  border: 1px solid rgba(138, 84, 216, 0.18);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: 0 12px 28px rgba(73, 35, 107, 0.12);
}

.official-images img {
  width: 100%;
}

.official-images figcaption {
  padding: 14px 16px 16px;
  font-weight: 700;
}

.flow {
  background: #ffffff;
}

.notice {
  background: linear-gradient(180deg, #ffffff, #fbf7ff);
}

.notice h2 {
  margin-bottom: 18px;
  font-size: 24px;
}

.notice p + p {
  margin-top: 12px;
}

.site-footer {
  padding: 28px 20px;
  color: #7c7487;
  font-size: 12px;
  line-height: 1.8;
  text-align: center;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 16px;
  margin-bottom: 14px;
}

.site-footer a {
  text-decoration: none;
}

.site-footer p {
  margin: 0;
}

.fixed-cta {
  position: fixed;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 10;
  padding: 8px 14px calc(8px + env(safe-area-inset-bottom));
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(10px);
  opacity: 0;
  pointer-events: none;
  transform: translateY(120%);
  transition: opacity 0.2s ease, transform 0.24s ease;
}

.fixed-cta.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.fixed-cta .line-button {
  min-height: 56px;
  max-width: 560px;
  border-width: 2px;
  font-size: 18px;
  box-shadow: 0 4px 0 #027d33, 0 10px 22px rgba(6, 199, 85, 0.2);
}

@media (max-width: 540px) {
  body {
    background: #ffffff;
  }

  .hero {
    padding-inline: 16px;
  }

  .section-pad {
    padding: 46px 20px;
  }

  .studio-shot {
    max-height: 1080px;
  }
}

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