:root {
  --aop-red: #c10e0e;
  --aop-red-light: #e74e4e;
  --aop-gold: #bc9f0b;
  --aop-paper: rgba(255, 255, 255, 0.82);
  --aop-content-width: 1000px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: #000;
  background: var(--aop-red);
  font-family: "Yu Gothic", "YuGothic", "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }

.aop {
  position: relative;
  min-height: 0;
  padding-bottom: 80px;
  overflow: hidden;
  background: radial-gradient(circle at 88% 8%, rgba(255,255,255,.08), transparent 31%), linear-gradient(90deg, var(--aop-red), var(--aop-red-light));
}

.aop::before {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  content: "";
  opacity: .13;
  background-image: repeating-radial-gradient(circle at 18% 28%, rgba(255,255,255,.42) 0 .55px, transparent .8px 2.8px), repeating-radial-gradient(circle at 72% 61%, rgba(0,0,0,.34) 0 .45px, transparent .75px 3px);
  background-size: 5px 5px, 7px 7px;
  mix-blend-mode: soft-light;
}

.aop__decorations { position: absolute; inset: 0; z-index: 1; pointer-events: none; }
.aop__rose { position: absolute; max-width: none; opacity: .32; mix-blend-mode: soft-light; }
.aop__rose--top-right { top: 233px; left: calc(50% + 339px); }
.aop__rose--top-left { top: 327px; left: calc(50% - 628px); transform: rotate(180deg) scaleY(-1); }
.aop__rose--middle-right { top: 516px; left: calc(50% + 276px); transform: rotate(-15.85deg); }
.aop__rose--middle-left { top: 695px; left: calc(50% - 566px); transform: rotate(-.18deg); }
.aop__rose--center-left { top: 960px; left: calc(50% - 686px); transform: rotate(17.58deg); }
.aop__rose--center-right { top: 826px; left: calc(50% + 360px); transform: rotate(-33.03deg); }
.aop__rose--lower-left { top: 1306px; left: calc(50% - 587px); transform: rotate(180deg) scaleY(-1); }
.aop__rose--lower-right { top: 1211px; left: calc(50% + 318px); }
.aop__rose--bottom-left { top: 1662px; left: calc(50% - 635px); transform: rotate(-1.59deg); }
.aop__rose--bottom-right { top: 1545px; left: calc(50% + 383px); transform: rotate(-15.85deg); }

.aop__hero, .aop__overview, .aop__topics { position: relative; z-index: 2; }
.aop__hero { height: 580px; margin: 0; }
.aop__title { position: absolute; top: 50%; left: 50%; width: 587px; height: 326px; max-width: none; pointer-events: none; user-select: none; transform: translate(-50%, -50%); -webkit-user-drag: none; -webkit-touch-callout: none; }
.aop__scroll { display: none; }
.aop__sp-break { display: none; }

.aop__overview, .aop__topics { width: min(var(--aop-content-width), calc(100% - 48px)); margin-right: auto; margin-left: auto; }
.aop__overview { height: 434px; padding: 55px 24px 0; text-align: center; background: var(--aop-paper); }
.aop__intro { font-size: 16px; line-height: 20px; }
.aop__intro p { margin: 0 0 23px; }
.aop__period { margin-top: 51px; font-size: 16px; }
.aop__period-label { display: inline-block; padding: 4px 9px 5px; color: #fff; background: var(--aop-red); }
.aop__period-text { margin: 10px 0 0; line-height: 1.5; }

.aop__button { display: grid; place-items: center; width: min(420px, 100%); min-height: 64px; margin-right: auto; margin-left: auto; padding: 12px 28px; color: #fff; font-size: 18px; line-height: 1.4; background: var(--aop-gold); border-radius: 999px; transition: filter 180ms ease, transform 180ms ease; }
.aop__button:hover, .aop__button:focus-visible { filter: brightness(1.08); transform: translateY(-2px); }
.aop__button:focus-visible, .aop__accordion-button:focus-visible { outline: 3px solid #fff; outline-offset: 3px; }
.aop__button--message { margin-top: 38px; }

.aop__topics { margin-top: 73px; }
.aop__accordion-button { position: relative; display: grid; place-items: center; width: 100%; min-height: 64px; padding: 12px 72px; color: #fff; font-size: 20px; font-weight: 700; background: var(--aop-gold); border: 0; cursor: pointer; }
.aop__accordion-icon { position: absolute; top: 50%; right: 41px; width: 28px; height: 28px; transform: translateY(-50%); }
.aop__accordion-icon::before, .aop__accordion-icon::after { position: absolute; top: 50%; left: 50%; width: 28px; height: 3px; background: #fff; border-radius: 999px; content: ""; transform: translate(-50%, -50%); transform-origin: center; transition: opacity 260ms ease, transform 360ms cubic-bezier(.4,0,.2,1); }
.aop__accordion-icon::after { transform: translate(-50%, -50%) rotate(90deg); }
.aop__accordion-button[aria-expanded="true"] .aop__accordion-icon::after { opacity: 0; transform: translate(-50%, -50%) rotate(90deg) scaleX(0); }
.aop__accordion-panel { display: grid; grid-template-rows: 1fr; overflow: hidden; background: var(--aop-paper); opacity: 1; visibility: visible; transition: grid-template-rows 420ms cubic-bezier(.4,0,.2,1), opacity 260ms ease, visibility 0s linear; }
.aop__accordion-panel[aria-hidden="true"] { grid-template-rows: 0fr; opacity: 0; visibility: hidden; transition: grid-template-rows 420ms cubic-bezier(.4,0,.2,1), opacity 260ms ease, visibility 0s linear 420ms; }
.aop__accordion-content { min-height: 0; overflow: hidden; }
.aop__accordion-body { min-height: 678px; padding: 55px 26px 25px; text-align: center; }
.aop__topics-intro { font-size: 16px; line-height: 1.4; }
.aop__topics-intro p { margin: 0; }
.aop__notes { margin-top: 15px !important; font-size: 12px; line-height: 1.4; }
.aop__topic { margin-top: 48px; }
.aop__topic-title { margin: 0; font-size: 20px; line-height: 23px; }
.aop__topic-line { display: block; width: 42px; height: 3px; margin: 8px auto 16px; background: var(--aop-red); }
.aop__topic-text { max-width: 674px; margin: 0 auto; font-size: 14px; line-height: 17px; text-align: left; }
.aop__button--topic { margin-top: 30px; }
.aop__divider { width: 674px; height: 3px; margin: 25px auto 21px; }
.aop__divider + .aop__topic { margin-top: 0; }

.aop-footer { display: grid; place-items: center; min-height: 116px; padding: 32px 20px; color: #fff; text-align: center; background: linear-gradient(90deg, var(--aop-red), var(--aop-red-light)); }
.aop-footer__copyright { margin: 0; font-family: Georgia, "Times New Roman", serif; font-size: 11px; font-weight: 700; letter-spacing: .04em; }

@media (max-width: 767px) {
  .aop { --aop-kv-height: 100vh; padding-bottom: 52px; }
  @supports (height: 100svh) { .aop { --aop-kv-height: 100svh; } }
  .aop__hero { height: var(--aop-kv-height); }
  .aop__title { top: 50%; width: min(92vw, 587px); height: auto; max-width: 92vw; transform: translate(-50%, -50%); }
  .aop__scroll { position: absolute; bottom: 24px; left: 50%; display: block; width: 1px; height: 72px; overflow: hidden; background: rgba(255, 255, 255, .28); transform: translateX(-50%); }
  .aop__scroll::after { position: absolute; top: -100%; left: 0; width: 100%; height: 100%; background: #fff; content: ""; animation: aop-scroll-line 1.8s cubic-bezier(.76, 0, .24, 1) infinite; }
  .aop__overview, .aop__topics { width: calc(100% - 32px); }
  .aop__overview { height: auto; min-height: 0; padding: 44px 20px 50px; }
  .aop__intro, .aop__topics-intro { font-size: 14px; line-height: 1.8; }
  .aop__intro br { display: none; }
  .aop__intro br.aop__sp-break, .aop__intro br.aop__intro-break { display: inline; }
  .aop__period { margin-top: 38px; font-size: 14px; }
  .aop__period-text time { display: block; }
  .aop__button { min-height: 58px; font-size: 16px; }
  .aop__button--message { margin-top: 29px; }
  .aop__topics { margin-top: 36px; }
  .aop__accordion-button { min-height: 58px; padding: 10px 54px; font-size: 17px; }
  .aop__accordion-icon { right: 20px; width: 24px; height: 24px; }
  .aop__accordion-icon::before, .aop__accordion-icon::after { width: 22px; height: 2px; }
  .aop__accordion-body { min-height: 0; padding: 42px 18px; }
  .aop__notes { font-size: 11px; text-align: left; }
  .aop__topic { margin-top: 40px; }
  .aop__topic-title { font-size: 18px; }
  .aop__topic-text { font-size: 13px; line-height: 1.55; }
  .aop__button--topic { margin-top: 24px; }
  .aop__divider { width: 100%; margin: 25px auto 21px; }
  .aop__rose { opacity: .72; }
  .aop__rose--top-left { top: 40px; left: -145px; opacity: .42; transform: rotate(180deg) scaleY(-1) scale(.72); }
  .aop__rose--top-right { top: calc(var(--aop-kv-height) - 302px); right: -150px; left: auto; opacity: .42; transform: scale(.72); }
  .aop__rose--middle-left, .aop__rose--center-right, .aop__rose--lower-left, .aop__rose--bottom-right { display: none; }
  .aop__rose--middle-right { top: calc(var(--aop-kv-height) + 650px); right: -135px; left: auto; transform: rotate(-15.85deg) scale(.72); }
  .aop__rose--center-left { top: calc(var(--aop-kv-height) + 930px); left: -160px; transform: rotate(17.58deg) scale(.72); }
  .aop__rose--lower-right { top: calc(var(--aop-kv-height) + 1270px); right: -145px; left: auto; transform: scale(.72); }
  .aop__rose--bottom-left { top: auto; bottom: -75px; left: -135px; transform: scale(.72); }
  .aop-footer { min-height: 96px; }
}

@keyframes aop-scroll-line {
  0% { transform: translateY(0); }
  65%, 100% { transform: translateY(200%); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}