:root {
  color-scheme: light;
  --ink: #302933;
  --paper: #fffafb;
  --rose: #f4e8ef;
  --line: #d9cbd5;
  --purple: #7546ed;
  --green: #06c755;
  --serif: "Noto Serif JP", "Yu Mincho", serif;
  --sans: "Noto Sans JP", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body { margin: 0; color: var(--ink); background: var(--paper); font: 17px/1.8 var(--sans); -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }

.site-header { position: absolute; z-index: 5; inset: 0 0 auto; display: flex; align-items: center; justify-content: space-between; width: min(100%, 1500px); height: 94px; margin: auto; padding: 0 6.2%; }
.brand-logo { display: block; width: 166px; }
.desktop-nav { display: flex; align-items: center; gap: clamp(24px, 3.2vw, 48px); margin-left: auto; margin-right: 48px; font-size: 16px; font-weight: 500; }
.desktop-nav a { padding: 10px 0; }
.desktop-nav a:hover { color: var(--purple); }
.header-cta { display: flex; align-items: center; justify-content: center; min-width: 190px; min-height: 52px; padding: 8px 18px; background: var(--green); color: white; font-size: 16px; font-weight: 700; }
.header-cta span, .hero-cta span, .button span { margin-left: 12px; }

.hero { position: relative; height: min(900px, 100svh); min-height: 650px; overflow: hidden; background: #ead9e4; }
.hero-stage { position: absolute; inset: 0; margin: 0; }
.hero-stage::after { position: absolute; inset: 0; background: linear-gradient(90deg, #fff9f6a6 0%, #fff9f640 35%, transparent 65%); content: ""; }
.hero-stage img { display: block; width: 100%; height: 100%; object-fit: cover; object-position: center 56%; }
.hero-copy { position: absolute; top: 50%; left: max(8.5%, calc((100vw - 1260px) / 2)); width: min(48%, 610px); transform: translateY(-40%); }
.hero-copy h1 { margin: 0; font: 500 clamp(48px, 6vw, 78px)/1.5 var(--serif); letter-spacing: -.055em; }
.hero-copy > p { margin: 20px 0 32px; font-size: 19px; font-weight: 500; }
.hero-cta { display: flex; align-items: center; justify-content: center; width: 310px; min-height: 66px; padding: 12px 24px; color: white; background: var(--green); font-size: 18px; font-weight: 700; }
.hero-cta:hover, .header-cta:hover, .button-line:hover { background: #05b34c; }

.section { width: 100%; margin: auto; }
.section-intro { max-width: 1100px; padding: 138px 56px 115px; }
.intro-content { max-width: 900px; margin: auto; }
.intro-content h2 { margin: 0 0 28px; font: 500 clamp(40px, 5vw, 64px)/1.48 var(--serif); letter-spacing: -.04em; }
.intro-content > p { max-width: 720px; margin: 0; color: #514851; font-size: 19px; line-height: 2; }
.intro-facts { display: flex; max-width: 790px; margin-top: 56px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.intro-facts p { display: flex; flex: 1; align-items: baseline; gap: 20px; margin: 0; padding: 22px 18px; }
.intro-facts p + p { border-left: 1px solid var(--line); }
.intro-facts strong { color: var(--purple); font: 500 38px/1.2 var(--sans); }
.intro-facts span { font-size: 17px; font-weight: 600; }
.section-cta { display: flex; justify-content: center; padding: 0 32px 110px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 12px; font-size: 18px; font-weight: 700; }
.button-line { width: min(440px, 100%); min-height: 68px; padding: 12px 24px; color: #fff; background: var(--green); }

.section-profile { padding: 108px 7%; background: var(--rose); }
.profile-grid { display: grid; grid-template-columns: minmax(250px, 390px) minmax(0, 1fr); align-items: center; gap: clamp(48px, 8vw, 118px); max-width: 1120px; margin: auto; }
.profile-photo { display: block; width: 100%; aspect-ratio: 1; object-fit: cover; object-position: center 34%; }
.profile-copy h2 { margin: 0 0 26px; font: 500 clamp(42px, 5vw, 66px)/1.3 var(--serif); }
.profile-copy > p:not(.profile-name) { max-width: 560px; margin: 0; font-size: 19px; line-height: 2; }
.profile-name { margin: 34px 0 0; font-size: 17px; }
.profile-name strong { margin-left: 10px; font: 500 30px/1.4 var(--serif); }

.section-reward { max-width: 1120px; padding: 122px 56px 120px; }
.reward-heading h2, .section-steps h2, .section-faq h2 { margin: 0; font: 500 clamp(38px, 4.5vw, 56px)/1.45 var(--serif); letter-spacing: -.03em; }
.reward-summary { display: grid; grid-template-columns: 1.06fr .94fr; margin-top: 48px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.reward-summary article { min-height: 290px; padding: 38px 40px; }
.reward-main { border-right: 1px solid var(--line); }
.reward-summary h3 { margin: 0; font-size: 19px; font-weight: 600; }
.reward-main > strong { display: block; margin-top: 2px; color: var(--purple); font: 500 clamp(88px, 11vw, 138px)/1.15 var(--sans); letter-spacing: -.06em; }
.reward-main > strong span { margin-left: 8px; font-size: .37em; letter-spacing: 0; }
.reward-summary article p { margin: 4px 0 0; font-size: 19px; }
.reward-bonus { display: flex; flex-direction: column; justify-content: center; }
.reward-bonus h3 { font: 500 clamp(28px, 3.3vw, 42px)/1.5 var(--serif); }
.reward-bonus p { max-width: 440px; margin-top: 20px !important; color: #514851; }
.reward-footnote { margin: 22px 0 0; color: #514851; font-size: 16px; }

.section-steps { padding: 112px max(7%, calc((100vw - 1120px) / 2)); background: var(--rose); }
.steps-heading { display: flex; align-items: end; justify-content: space-between; gap: 40px; }
.steps-heading > p { max-width: 450px; margin: 0; font-size: 18px; }
.steps-list { margin: 48px 0 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.steps-list li { display: grid; grid-template-columns: 88px minmax(0, 1fr); align-items: center; min-height: 138px; padding: 22px 8px; border-bottom: 1px solid var(--line); }
.steps-number { color: var(--purple); font: 500 36px/1.2 var(--sans); }
.steps-list strong { font-size: 22px; }
.steps-list p { margin: 5px 0 0; font-size: 18px; }

.section-faq { max-width: 1120px; padding: 122px 56px; }
.faq-grid { display: grid; grid-template-columns: minmax(270px, .8fr) minmax(0, 1.2fr); gap: 72px; }
.faq-grid > div:first-child { align-self: start; }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list details:first-child { border-top: 1px solid var(--line); }
.faq-list summary { position: relative; padding: 22px 48px 22px 0; cursor: pointer; list-style: none; font-size: 19px; font-weight: 600; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary span::before, .faq-list summary span::after { position: absolute; top: 50%; right: 8px; width: 20px; height: 2px; content: ""; background: var(--ink); }
.faq-list summary span::after { transform: rotate(90deg); transition: transform .2s ease; }
.faq-list details[open] summary span::after { transform: rotate(0); }
.faq-list details p { margin: 0; padding: 0 0 22px; color: #514851; font-size: 18px; line-height: 1.9; }

.final-cta { display: flex; flex-direction: column; align-items: center; justify-content: center; min-height: 390px; padding: 76px 24px; background: #eee3ed; text-align: center; }
.final-cta h2 { margin: 0 0 32px; font: 500 clamp(38px, 4.5vw, 54px)/1.45 var(--serif); }
.button-final { width: min(440px, 100%); min-height: 68px; padding: 12px 28px; color: white; background: var(--green); }
.site-footer { display: flex; align-items: center; justify-content: space-between; gap: 32px; max-width: 1450px; margin: auto; padding: 38px 6.2% 48px; }
.brand-footer { flex: none; }
.brand-footer .brand-logo { width: 150px; }
.site-footer > small { max-width: 800px; font-size: 14px; line-height: 1.7; }

.sticky-cta { position: fixed; z-index: 20; right: 28px; bottom: 28px; display: flex; align-items: center; justify-content: center; min-width: 270px; min-height: 72px; padding: 12px 23px; gap: 12px; border: 1px solid #5c515d; background: rgba(255,250,251,.97); box-shadow: 0 12px 36px #2b26301a; font-size: 17px; font-weight: 700; line-height: 1.45; transition: opacity .18s ease, transform .18s ease; }
.sticky-cta-icon { color: var(--green); font-size: 22px; }
.sticky-cta.is-hidden { visibility: hidden; opacity: 0; pointer-events: none; transform: translateY(8px); }
.live-toast { position: fixed; z-index: 30; right: 24px; bottom: 118px; max-width: 520px; padding: 16px 20px; background: var(--ink); color: white; font-size: 16px; opacity: 0; pointer-events: none; transform: translateY(8px); transition: .2s ease; }
.live-toast.is-visible { opacity: 1; transform: translateY(0); }

@media (max-width: 900px) {
  .site-header { height: 82px; padding: 0 5%; }
  .brand-logo { width: 148px; }
  .desktop-nav { gap: 20px; margin-right: 24px; font-size: 15px; }
  .header-cta { min-width: 162px; min-height: 48px; font-size: 15px; }
  .hero { min-height: 620px; }
  .hero-copy { left: 7%; width: 55%; }
  .hero-copy h1 { font-size: clamp(46px, 7vw, 62px); }
  .hero-stage img { object-position: 59% center; }
  .section-intro { max-width: 780px; padding: 95px 7% 82px; }
  .intro-content h2 { font-size: clamp(40px, 6vw, 52px); }
  .intro-facts { margin-top: 38px; }
  .section-cta { padding-bottom: 80px; }
  .section-profile { padding: 76px 7%; }
  .profile-grid { grid-template-columns: minmax(200px, 34%) 1fr; gap: 38px; }
  .section-reward { padding: 88px 7%; }
  .reward-summary article { min-height: 255px; padding: 30px; }
  .section-steps { padding: 86px 7%; }
  .section-faq { padding: 90px 7%; }
  .faq-grid { gap: 42px; }
  .sticky-cta { right: 18px; bottom: 18px; min-width: 240px; min-height: 64px; }
}

@media (max-width: 650px) {
  html { scroll-padding-top: 68px; }
  body { font-size: 17px; }
  .site-header { height: 68px; align-items: center; padding: 0 5.5%; }
  .brand-logo { width: 130px; }
  .desktop-nav { display: none; }
  .header-cta { min-width: 142px; min-height: 44px; padding: 6px 12px; font-size: 15px; }
  .hero { height: 100svh; min-height: 680px; max-height: 900px; background: var(--paper); }
  .hero-stage { bottom: 34%; }
  .hero-stage::after { background: linear-gradient(180deg, #fff9f655 0%, transparent 70%, #fffafb 100%); }
  .hero-stage img { object-position: 67% center; }
  .hero-copy { top: auto; right: 7%; bottom: 7%; left: 7%; width: auto; transform: none; }
  .hero-copy h1 { font-size: clamp(40px, 11vw, 52px); line-height: 1.42; }
  .hero-copy > p { margin: 12px 0 21px; font-size: 17px; }
  .hero-cta { width: 100%; min-height: 60px; font-size: 17px; }
  .section-intro { padding: 76px 7% 68px; }
  .intro-content h2 { margin-bottom: 20px; font-size: 38px; }
  .intro-content > p { font-size: 17px; line-height: 1.95; }
  .intro-facts { display: block; margin-top: 30px; }
  .intro-facts p { gap: 18px; padding: 15px 4px; }
  .intro-facts p + p { border-top: 1px solid var(--line); border-left: 0; }
  .intro-facts strong { min-width: 90px; font-size: 34px; }
  .intro-facts span { font-size: 17px; }
  .section-cta { padding: 0 7% 68px; }
  .button-line { min-height: 60px; font-size: 17px; }
  .section-profile { padding: 54px 7%; }
  .profile-grid { grid-template-columns: 120px 1fr; gap: 22px; }
  .profile-copy h2 { margin-bottom: 10px; font-size: 35px; }
  .profile-copy > p:not(.profile-name) { font-size: 16px; line-height: 1.8; }
  .profile-name { margin-top: 16px; font-size: 15px; }
  .profile-name strong { margin-left: 5px; font-size: 22px; }
  .section-reward { padding: 74px 7%; }
  .reward-heading h2, .section-steps h2, .section-faq h2 { font-size: 36px; }
  .reward-summary { grid-template-columns: 1fr; margin-top: 26px; }
  .reward-summary article { min-height: 0; padding: 26px 4px; }
  .reward-main { border-right: 0; border-bottom: 1px solid var(--line); }
  .reward-summary h3 { font-size: 18px; }
  .reward-main > strong { margin-top: 5px; font-size: 88px; }
  .reward-summary article p { font-size: 17px; }
  .reward-bonus h3 { font-size: 28px; }
  .reward-bonus p { margin-top: 12px !important; }
  .reward-footnote { font-size: 16px; line-height: 1.8; }
  .section-steps { padding: 74px 7%; }
  .steps-heading { align-items: start; flex-direction: column; gap: 14px; }
  .steps-heading > p { font-size: 17px; }
  .steps-list { margin-top: 27px; }
  .steps-list li { grid-template-columns: 58px minmax(0, 1fr); min-height: 112px; padding: 17px 2px; }
  .steps-number { font-size: 28px; }
  .steps-list strong { font-size: 19px; }
  .steps-list p { font-size: 16px; line-height: 1.7; }
  .section-faq { padding: 76px 7%; }
  .faq-grid { grid-template-columns: 1fr; gap: 24px; }
  .faq-list summary { padding: 18px 40px 18px 0; font-size: 17px; line-height: 1.7; }
  .faq-list details p { padding-bottom: 18px; font-size: 16px; line-height: 1.8; }
  .final-cta { min-height: 300px; padding: 60px 7%; }
  .final-cta h2 { margin-bottom: 24px; font-size: 36px; }
  .button-final { min-height: 60px; font-size: 17px; }
  .site-footer { align-items: flex-start; flex-direction: column; gap: 18px; padding: 30px 7% 38px; }
  .brand-footer .brand-logo { width: 138px; }
  .site-footer > small { font-size: 14px; }
  .sticky-cta { right: 12px; bottom: max(12px, env(safe-area-inset-bottom)); left: 12px; min-width: 0; min-height: 58px; padding: 9px 16px; font-size: 16px; }
  .live-toast { right: 12px; bottom: 82px; left: 12px; font-size: 16px; text-align: center; }
}

@media (max-width: 360px) {
  .profile-grid { grid-template-columns: 102px minmax(0, 1fr); gap: 16px; }
  .profile-copy h2 { font-size: 31px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}