:root {
  color-scheme: light;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", sans-serif;
  color: #182132;
  background: #fff8ef;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; line-height: 1.8; }
a { color: inherit; }

.about-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 70px;
  padding: 12px max(22px, calc((100vw - 1120px) / 2));
  background: rgba(255, 250, 244, 0.94);
  border-bottom: 1px solid #f0d6bd;
  backdrop-filter: blur(14px);
}

.about-brand {
  color: #ed4707;
  font-size: 1.45rem;
  font-weight: 950;
  letter-spacing: 0.06em;
  text-decoration: none;
}

.about-home-link {
  color: #6e5747;
  font-size: 0.84rem;
  font-weight: 850;
  text-decoration: none;
}

main { overflow: hidden; }

.about-hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(240px, 0.75fr);
  align-items: center;
  gap: clamp(32px, 7vw, 90px);
  min-height: 590px;
  padding: clamp(64px, 9vw, 112px) max(24px, calc((100vw - 1120px) / 2));
  color: #fff;
  background:
    radial-gradient(circle at 85% 12%, rgba(255, 229, 151, 0.36), transparent 24%),
    radial-gradient(circle at 12% 86%, rgba(119, 20, 0, 0.26), transparent 36%),
    linear-gradient(145deg, #d93600, #ff4b00 54%, #ff781e);
}

.about-hero::after {
  position: absolute;
  right: -70px;
  bottom: -150px;
  width: 430px;
  height: 430px;
  border: 2px solid rgba(255, 255, 255, 0.12);
  border-radius: 50%;
  box-shadow: 0 0 0 58px rgba(255, 255, 255, 0.055), 0 0 0 116px rgba(255, 255, 255, 0.03);
  content: "";
}

.about-hero-copy, .about-hero-mark { position: relative; z-index: 1; }
.about-kicker, .about-section-heading > span {
  color: #ffd996;
  font-size: 0.75rem;
  font-weight: 950;
  letter-spacing: 0.14em;
}

.about-hero h1 {
  margin: 13px 0 24px;
  font-family: "Yu Mincho", YuMincho, "Hiragino Mincho ProN", serif;
  font-size: clamp(2.3rem, 3.8vw, 3.2rem);
  line-height: 1.34;
  letter-spacing: 0.025em;
}

.about-hero h1 span {
  display: block;
  white-space: nowrap;
}

.about-hero-copy > p {
  max-width: 720px;
  margin: 0;
  color: rgba(255, 255, 255, 0.92);
  font-size: clamp(1rem, 1.7vw, 1.2rem);
  font-weight: 750;
}

.about-hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.about-hero-actions a, .about-cta a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 0 24px;
  border-radius: 16px;
  font-weight: 900;
  text-decoration: none;
  transition: transform 0.16s ease, box-shadow 0.16s ease, background-color 0.16s ease;
}

.about-primary-action { color: #d94005; background: #fff; box-shadow: 0 12px 28px rgba(93, 22, 0, 0.2); }
.about-secondary-action { color: #fff; border: 1px solid rgba(255, 255, 255, 0.48); background: rgba(108, 24, 0, 0.18); }
.about-hero-actions a:hover, .about-cta a:hover { transform: translateY(-3px); }
.about-primary-action:hover { box-shadow: 0 17px 34px rgba(93, 22, 0, 0.26); }
.about-secondary-action:hover { background: rgba(108, 24, 0, 0.3); box-shadow: 0 12px 26px rgba(93, 22, 0, 0.16); }
.about-hero-actions a:active, .about-cta a:active { transform: translateY(2px); box-shadow: 0 5px 12px rgba(93, 22, 0, 0.16); }
.about-hero-actions a:focus-visible, .about-cta a:focus-visible { outline: 3px solid #fff1a8; outline-offset: 4px; }

.about-hero-mark {
  display: grid;
  width: min(100%, 310px);
  aspect-ratio: 1;
  place-items: center;
  justify-self: center;
  padding: 38px;
  border: 2px solid rgba(255, 255, 255, 0.36);
  border-radius: 50%;
  background: rgba(130, 25, 0, 0.15);
  box-shadow: inset 0 0 0 14px rgba(255, 255, 255, 0.07), 0 25px 60px rgba(97, 20, 0, 0.22);
  text-align: center;
  backdrop-filter: blur(8px);
}

.about-hero-mark span { display: block; font-family: "Yu Mincho", serif; font-size: 7rem; font-weight: 900; line-height: 0.9; }
.about-hero-mark small { color: #ffe8bd; font-weight: 900; line-height: 1.55; }

.about-section {
  width: min(calc(100% - 40px), 1080px);
  margin: 0 auto;
  padding: 92px 0;
}

.about-section-heading { max-width: 780px; }
.about-section-heading.centered { margin: 0 auto 34px; text-align: center; }
.about-section-heading > span { color: #e2470a; }
.about-section h2, .about-cta h2 {
  margin: 9px 0 22px;
  font-size: clamp(1.75rem, 4vw, 2.7rem);
  line-height: 1.4;
}

.about-introduction > p {
  max-width: 900px;
  margin: 0 0 16px;
  color: #566173;
  font-size: 1.02rem;
  font-weight: 650;
}

.about-feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.about-feature-grid article {
  position: relative;
  padding: 30px;
  overflow: hidden;
  background: #fff;
  border: 1px solid #f0d7c0;
  border-radius: 26px;
  box-shadow: 0 14px 40px rgba(76, 44, 24, 0.07);
}

.about-feature-grid article > small { position: absolute; top: 18px; right: 22px; color: #ecd8c8; font-size: 1.4rem; font-weight: 950; }
.about-feature-icon { display: grid; width: 60px; height: 60px; place-items: center; background: #fff1dd; border-radius: 19px; font-size: 29px; }
.about-feature-grid h3 { margin: 22px 0 10px; font-size: 1.25rem; }
.about-feature-grid p { margin: 0; color: #697487; font-size: 0.92rem; font-weight: 650; }

.about-qr-feature {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 210px;
  align-items: center;
  gap: clamp(28px, 6vw, 72px);
  margin-top: 22px;
  padding: clamp(30px, 5vw, 50px);
  overflow: hidden;
  color: #fff;
  background:
    radial-gradient(circle at 90% 10%, rgba(255, 221, 130, 0.35), transparent 30%),
    linear-gradient(135deg, #d93b05, #ff6412);
  border-radius: 28px;
  box-shadow: 0 18px 46px rgba(186, 53, 0, 0.17);
}
.about-qr-copy > span { color: #ffe1a4; font-size: 0.76rem; font-weight: 950; letter-spacing: 0.12em; }
.about-qr-copy h3 { margin: 8px 0 12px; font-size: clamp(1.55rem, 3vw, 2.25rem); line-height: 1.4; }
.about-qr-copy p { max-width: 720px; margin: 0; color: rgba(255, 255, 255, 0.93); font-weight: 700; }
.about-qr-copy ol { display: flex; flex-wrap: wrap; gap: 10px 18px; margin: 24px 0 0; padding: 0; list-style: none; }
.about-qr-copy li { display: inline-flex; align-items: center; gap: 7px; font-size: 0.82rem; font-weight: 850; }
.about-qr-copy li b { display: grid; width: 25px; height: 25px; place-items: center; color: #d94005; background: #fff; border-radius: 50%; font-size: 0.75rem; }
.about-qr-mark { display: grid; width: 190px; aspect-ratio: 1; place-items: center; justify-self: center; align-content: center; gap: 8px; color: #db3d05; background: #fff; border: 10px solid rgba(255, 239, 207, 0.92); border-radius: 28px; box-shadow: 0 16px 38px rgba(100, 22, 0, 0.2); text-align: center; transform: rotate(2deg); }
.about-qr-mark span { font-size: 5.7rem; font-weight: 950; line-height: 0.8; }
.about-qr-mark small { color: #a64928; font-size: 0.64rem; font-weight: 950; letter-spacing: 0.13em; line-height: 1.45; }

.about-events { padding-top: 30px; }
.about-event-tags { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.about-event-tags span { padding: 10px 16px; color: #9e380d; background: #fff0dd; border: 1px solid #ffd9b7; border-radius: 999px; font-size: 0.9rem; font-weight: 850; }

.about-trust {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 26px;
  align-items: start;
  margin-bottom: 92px;
  padding: clamp(28px, 5vw, 48px);
  background: #fff;
  border: 1px solid #e5e9ee;
  border-radius: 28px;
  box-shadow: 0 16px 44px rgba(31, 42, 57, 0.07);
}

.about-trust-icon { display: grid; width: 62px; height: 62px; place-items: center; color: #fff; background: #28a865; border-radius: 50%; font-size: 1.6rem; font-weight: 950; }
.about-trust p { margin: 0; color: #647083; font-weight: 650; }

.about-notifications {
  position: relative;
  width: min(calc(100% - 40px), 1080px);
  margin: 0 auto 28px;
  padding: clamp(40px, 6vw, 66px);
  overflow: hidden;
  background:
    radial-gradient(circle at 96% 4%, rgba(139, 207, 55, 0.18), transparent 26%),
    linear-gradient(145deg, #fffdf8, #f7fff0);
  border: 1px solid #d9e9bd;
  border-radius: 32px;
  box-shadow: 0 22px 54px rgba(61, 91, 34, 0.1);
}

.about-notifications::after {
  position: absolute;
  right: -80px;
  bottom: -100px;
  width: 260px;
  height: 260px;
  border: 1px solid rgba(124, 191, 44, 0.14);
  border-radius: 50%;
  box-shadow: 0 0 0 38px rgba(124, 191, 44, 0.055), 0 0 0 76px rgba(124, 191, 44, 0.03);
  content: "";
}

.about-notifications-heading {
  position: relative;
  z-index: 1;
  max-width: 760px;
  margin: 0 auto 34px;
  text-align: center;
}

.about-notifications-heading > span,
.about-notification-card small {
  color: #e2470a;
  font-size: 0.72rem;
  font-weight: 950;
  letter-spacing: 0.14em;
}

.about-notifications-heading h2 {
  margin: 9px 0 14px;
  font-size: clamp(1.75rem, 4vw, 2.7rem);
  line-height: 1.4;
}

.about-notifications-heading p {
  margin: 0;
  color: #637054;
  font-weight: 700;
}

.about-notification-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.about-notification-card {
  display: flex;
  min-width: 0;
  padding: 24px;
  flex-direction: column;
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid #eadcca;
  border-radius: 24px;
  box-shadow: 0 12px 28px rgba(71, 55, 37, 0.07);
}

.about-notification-card-ios { border-color: #ffc69e; }
.about-notification-card-heading { display: flex; align-items: center; gap: 13px; }
.about-notification-device { display: grid; width: 54px; height: 54px; flex: 0 0 54px; place-items: center; background: #fff0df; border-radius: 17px; font-size: 25px; }
.about-notification-card small { display: block; margin-bottom: 2px; font-size: 0.63rem; }
.about-notification-card h3 { margin: 0; font-size: 1.08rem; line-height: 1.45; }
.about-notification-card > p,
.about-notification-card ol { margin: 20px 0 24px; color: #697263; font-size: 0.87rem; font-weight: 650; }
.about-notification-card ol { padding-left: 1.35rem; }
.about-notification-card li + li { margin-top: 5px; }
.about-notification-card .about-notification-card-note {
  margin: -12px 0 20px;
  padding: 9px 11px;
  color: #8b5f48;
  background: #fff4e7;
  border-radius: 11px;
  font-size: 0.73rem;
  line-height: 1.55;
}
.about-notification-card a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  margin-top: auto;
  padding: 10px 15px;
  color: #fff;
  background: linear-gradient(135deg, #f04b0c, #ff6817);
  border-radius: 14px;
  box-shadow: 0 9px 20px rgba(226, 71, 10, 0.18);
  font-size: 0.82rem;
  font-weight: 900;
  line-height: 1.45;
  text-align: center;
  text-decoration: none;
  transition: transform 0.16s ease, box-shadow 0.16s ease;
}

.about-notification-card a:hover { transform: translateY(-2px); box-shadow: 0 13px 25px rgba(226, 71, 10, 0.24); }
.about-notification-card a:active { transform: translateY(1px); }
.about-notification-card a:focus-visible { outline: 3px solid #ffba76; outline-offset: 3px; }
.about-notification-note {
  position: relative;
  z-index: 1;
  margin: 22px 0 0;
  color: #7b6b5d;
  font-size: 0.78rem;
  font-weight: 700;
  text-align: center;
}

.about-cta {
  width: min(calc(100% - 40px), 1080px);
  margin: 0 auto 90px;
  padding: clamp(42px, 7vw, 76px) 24px;
  color: #fff;
  background: linear-gradient(135deg, #db3b00, #ff6817);
  border-radius: 32px;
  box-shadow: 0 24px 60px rgba(199, 55, 0, 0.2);
  text-align: center;
}

.about-cta > span { font-size: 2.4rem; }
.about-cta h2 { margin-bottom: 10px; }
.about-cta p { margin: 0 0 28px; color: rgba(255, 255, 255, 0.9); font-weight: 700; }
.about-cta a { color: #d94105; background: #fff; }

.about-footer { display: flex; flex-wrap: wrap; justify-content: center; gap: 18px 26px; padding: 30px 20px; color: #71665d; background: #fff; border-top: 1px solid #eddaca; font-size: 0.82rem; font-weight: 750; }
.about-footer a { text-underline-offset: 4px; }

@media (max-width: 760px) {
  .about-header { min-height: 60px; }
  .about-hero { grid-template-columns: 1fr; min-height: auto; padding-top: 66px; padding-bottom: 76px; }
  .about-hero h1 { font-size: clamp(1.7rem, 7vw, 2.3rem); line-height: 1.45; }
  .about-hero-mark { display: none; }
  .about-hero-copy { width: 100%; min-width: 0; }
  .about-hero-actions {
    display: grid;
    width: 100%;
    justify-items: center;
    text-align: center;
  }
  .about-hero-actions a {
    width: 100%;
    margin-inline: auto;
    justify-content: center;
    text-align: center;
  }
  .about-section { width: min(calc(100% - 28px), 1080px); padding: 64px 0; }
  .about-feature-grid { grid-template-columns: 1fr; }
  .about-feature-grid article { padding: 25px; border-radius: 22px; }
  .about-qr-feature { grid-template-columns: 1fr; padding: 30px 24px; border-radius: 22px; }
  .about-qr-copy ol { display: grid; }
  .about-qr-mark { width: 150px; }
  .about-qr-mark span { font-size: 4.6rem; }
  .about-trust { grid-template-columns: 1fr; gap: 18px; margin-bottom: 64px; padding: 28px 22px 30px; }
  .about-trust-icon { width: 52px; height: 52px; font-size: 1.35rem; }
  .about-trust .about-section-heading > span { font-size: 0.7rem; }
  .about-trust h2 { margin: 7px 0 15px; font-size: clamp(1.45rem, 7vw, 1.8rem); line-height: 1.45; overflow-wrap: anywhere; }
  .about-trust p { font-size: 0.9rem; line-height: 1.9; }
  .about-notifications { width: calc(100% - 28px); padding: 34px 18px 30px; border-radius: 24px; }
  .about-notifications-heading { margin-bottom: 26px; }
  .about-notifications-heading h2 { font-size: clamp(1.55rem, 7vw, 2rem); }
  .about-notifications-heading p { font-size: 0.9rem; line-height: 1.85; }
  .about-notification-grid { grid-template-columns: 1fr; }
  .about-notification-card { padding: 21px; border-radius: 20px; }
  .about-notification-card h3 { font-size: 1rem; }
  .about-notification-card > p,
  .about-notification-card ol { margin-top: 17px; font-size: 0.84rem; }
  .about-notification-note { padding: 0 5px; line-height: 1.75; }
  .about-cta { width: calc(100% - 28px); margin-bottom: 64px; border-radius: 24px; }
}