/* Versioned filename prevents stale HTML/CSS pairings at the CDN edge. */
:root {
  color-scheme: light dark;
  --yellow: #ffc72c;
  --yellow-deep: #8a6800;
  --ink: #121214;
  --muted: #66666d;
  --paper: #f7f5ef;
  --card: rgba(255, 255, 255, 0.76);
  --line: rgba(18, 18, 20, 0.1);
  --max: 1080px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 86% 4%, rgba(255, 199, 44, 0.2), transparent 24rem),
    var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC",
    "Helvetica Neue", sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
.wrap { width: min(calc(100% - 40px), var(--max)); margin: 0 auto; }

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 30;
  padding: 10px 14px;
  border-radius: 8px;
  color: #191400;
  background: var(--yellow);
  transform: translateY(-160%);
  transition: transform 180ms ease;
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--paper) 84%, transparent);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(20px) saturate(1.25);
}
.nav {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 760;
  letter-spacing: -0.02em;
}
.brand img { width: 34px; height: 34px; border-radius: 9px; }
.nav-links { display: flex; align-items: center; gap: 24px; color: var(--muted); font-size: 14px; }
.nav-links a { transition: color 180ms ease, transform 180ms ease; }
.nav-links a:hover { color: var(--ink); }
.product-switch {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0 14px 0 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: color-mix(in srgb, var(--card) 88%, transparent);
}
.product-switch img { width: 22px; height: 22px; border-radius: 6px; }
.product-switch b { font-weight: 720; color: var(--ink); }
.nav-store {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  padding: 0 16px;
  border-radius: 999px;
  color: #191400;
  background: var(--yellow);
  font-weight: 720;
}
.nav-links .nav-store:hover { color: #191400; transform: translateY(-1px); }

.hero {
  min-height: 680px;
  display: grid;
  grid-template-columns: 1.16fr 0.84fr;
  align-items: center;
  gap: clamp(32px, 8vw, 100px);
  padding: 78px 0 92px;
}
.hero-copy-block { position: relative; z-index: 1; }
.eyebrow {
  margin: 0;
  color: var(--yellow-deep);
  font-size: 13px;
  font-weight: 760;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}
h1 {
  margin: 18px 0 26px;
  max-width: 760px;
  font-size: clamp(52px, 7.4vw, 92px);
  line-height: 0.98;
  letter-spacing: -0.065em;
  text-wrap: balance;
}
.hero-copy {
  max-width: 620px;
  margin: 0;
  color: var(--muted);
  font-size: clamp(18px, 2.2vw, 22px);
  line-height: 1.72;
  text-wrap: pretty;
}
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 20px; margin-top: 34px; }
.button {
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 0 22px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 15px;
  font-weight: 700;
  transition: transform 180ms ease, background-color 180ms ease;
}
.button:hover { transform: translateY(-2px); }
.button:active { transform: translateY(0) scale(0.98); }
.button.primary { color: #191400; background: var(--yellow); border-color: var(--yellow); }
.text-link { color: var(--muted); font-size: 14px; transition: color 180ms ease; }
.text-link:hover { color: var(--ink); }
.hero-art { position: relative; min-height: 500px; display: grid; place-items: center; }
.hero-art::before {
  content: "";
  position: absolute;
  width: min(360px, 84vw);
  aspect-ratio: 1;
  border-radius: 50%;
  background: var(--yellow);
  box-shadow: 0 30px 80px rgba(113, 83, 0, 0.16);
}
.hero-art img {
  position: relative;
  width: min(230px, 55vw);
  max-height: 470px;
  object-fit: contain;
}

.section { padding: 104px 0 112px; border-top: 1px solid var(--line); }
.section-head { max-width: 720px; margin-bottom: 58px; }
h2 {
  margin: 12px 0 18px;
  font-size: clamp(36px, 5vw, 58px);
  line-height: 1.08;
  letter-spacing: -0.05em;
  text-wrap: balance;
}
.lead {
  max-width: 650px;
  margin: 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.72;
}
.how-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
  align-items: center;
  gap: clamp(54px, 9vw, 110px);
}
.product-shot {
  position: relative;
  margin: 0;
  padding: 34px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 38px;
  background:
    radial-gradient(circle at 50% 26%, rgba(255, 199, 44, 0.44), transparent 46%),
    var(--card);
}
.product-shot img {
  width: 100%;
  max-height: 520px;
  margin: 0 auto;
  object-fit: contain;
  filter: drop-shadow(0 28px 36px rgba(54, 42, 5, 0.12));
}
.gesture-list { align-self: stretch; display: flex; flex-direction: column; justify-content: center; }
.gesture {
  display: grid;
  grid-template-columns: 58px 1fr;
  align-items: start;
  gap: 20px;
  padding: 32px 0 34px;
  border-top: 1px solid var(--line);
}
.gesture:nth-child(2) { border-bottom: 1px solid var(--line); }
.gesture-mark {
  width: 50px;
  height: 50px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: #191400;
  background: var(--yellow);
  font-size: 23px;
  font-weight: 760;
}
.gesture p { margin: 2px 0 7px; color: var(--muted); font-size: 14px; }
.gesture h3 { margin: 0; font-size: clamp(23px, 3vw, 34px); line-height: 1.24; letter-spacing: -0.035em; }
.how-note { margin: 30px 0 0 78px; color: var(--muted); font-size: 16px; line-height: 1.75; }

.scene-module {
  margin-top: 92px;
  padding-top: 72px;
  border-top: 1px solid var(--line);
}
.scene-module-head {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(280px, 0.65fr);
  align-items: end;
  gap: clamp(42px, 8vw, 100px);
}
.scene-module-head h3 {
  margin: 12px 0 0;
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.13;
  letter-spacing: -0.045em;
  text-wrap: balance;
}
.scene-module-head > p {
  margin: 0 0 4px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.75;
}
.scene-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 46px;
  border-top: 1px solid var(--line);
}
.scene-item {
  display: grid;
  grid-template-columns: 44px 1fr;
  align-items: start;
  gap: 18px;
  min-width: 0;
  padding: 27px 28px 29px 0;
  border-bottom: 1px solid var(--line);
}
.scene-item:nth-child(even) {
  padding-right: 0;
  padding-left: 28px;
  border-left: 1px solid var(--line);
}
.scene-icon {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border: 1px solid color-mix(in srgb, var(--yellow) 62%, var(--line));
  border-radius: 12px;
  color: var(--yellow-deep);
  background: color-mix(in srgb, var(--yellow) 13%, transparent);
}
.scene-icon svg {
  width: 21px;
  height: 21px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.scene-item h4 {
  margin: 1px 0 7px;
  font-size: 19px;
  line-height: 1.3;
  letter-spacing: -0.025em;
}
.scene-item p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.65;
  text-wrap: pretty;
}

.notice {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 48px;
  padding: 48px;
  border-radius: 30px;
  color: #fff;
  background: #171719;
}
.notice .eyebrow { color: #ffd766; }
.notice h2 { margin-top: 10px; font-size: clamp(34px, 4vw, 52px); }
.notice p:not(.eyebrow) { max-width: 660px; margin-bottom: 0; color: #bebec4; line-height: 1.72; }
.notice-actions { display: grid; justify-items: center; gap: 14px; }
.notice .button { min-width: 140px; color: #191400; background: var(--yellow); border-color: var(--yellow); white-space: nowrap; }
.notice-link { color: #bebec4; font-size: 13px; text-decoration: underline; text-underline-offset: 4px; }

.companion-section { padding-top: 72px; padding-bottom: 78px; }
.other-product {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 20px;
  margin-top: 26px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  transition: padding 180ms ease;
}
.other-product:hover { padding-right: 8px; padding-left: 8px; }
.other-product img { width: 52px; height: 52px; border-radius: 14px; }
.other-product h3, .other-product p { margin: 0; }
.other-product h3 { font-size: 21px; letter-spacing: -0.025em; }
.other-product p { margin-top: 5px; color: var(--muted); }
.other-product .arrow { font-size: 22px; color: var(--muted); }

.support-grid { display: grid; grid-template-columns: 1fr 280px; gap: 28px; align-items: stretch; }
.support-panel, .qr-panel {
  padding: 34px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: var(--card);
}
.support-panel h3, .qr-panel h3 { margin: 0 0 12px; font-size: 25px; }
.support-panel p, .qr-panel p { color: var(--muted); line-height: 1.7; }
.contact-list { margin: 26px 0 0; display: grid; gap: 12px; }
.contact-item { display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 17px 18px; border: 1px solid var(--line); border-radius: 18px; }
.contact-item span:first-child { color: var(--muted); }
.qr-panel img { width: 180px; height: 180px; margin: 24px auto 0; border-radius: 18px; }

.article { max-width: 780px; padding: 72px 0 110px; }
.article h1 { font-size: clamp(44px, 6vw, 72px); }
.article-meta { margin: -6px 0 44px; color: var(--muted); }
.article h2 { margin: 42px 0 12px; font-size: 26px; letter-spacing: -0.025em; }
.article p, .article li { color: #48484e; font-size: 17px; line-height: 1.82; }
.article ul { padding-left: 1.25em; }
.article-callout { margin: 34px 0; padding: 24px; border-left: 5px solid var(--yellow); border-radius: 0 20px 20px 0; background: var(--card); }

.site-footer { padding: 34px 0; color: var(--muted); border-top: 1px solid var(--line); font-size: 13px; }
.footer-inner { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.footer-links { display: flex; flex-wrap: wrap; gap: 20px; }

a:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--yellow) 76%, #000);
  outline-offset: 4px;
}

@media (max-width: 780px) {
  .wrap { width: min(calc(100% - 32px), var(--max)); }
  .nav { min-height: 62px; }
  .nav-links { gap: 8px; }
  .home-page .nav-links > a:not(.nav-store):not(.product-switch) { display: none; }
  .product-switch { padding: 0 10px 0 7px; }
  .product-switch span { font-size: 12px; }
  .product-switch b { display: none; }
  .nav-store { min-height: 36px; padding: 0 14px; }
  .hero { min-height: auto; grid-template-columns: 1fr; gap: 34px; padding: 54px 0 72px; }
  .hero-copy-block { order: 1; }
  .hero-art { order: 2; min-height: 340px; }
  .hero-art::before { width: 280px; }
  .hero-art img { width: 160px; max-height: 310px; }
  h1 { font-size: clamp(48px, 15vw, 68px); }
  .hero-copy { font-size: 17px; line-height: 1.72; }
  .section { padding: 74px 0 82px; }
  .section-head { margin-bottom: 44px; }
  .how-layout { grid-template-columns: 1fr; gap: 40px; }
  .product-shot { max-width: 420px; margin: 0 auto; padding: 28px; border-radius: 30px; }
  .gesture { grid-template-columns: 50px 1fr; gap: 16px; padding: 26px 0 28px; }
  .gesture-mark { width: 44px; height: 44px; }
  .how-note { margin: 24px 0 0 66px; }
  .scene-module { margin-top: 68px; padding-top: 56px; }
  .scene-module-head { grid-template-columns: 1fr; gap: 22px; }
  .scene-module-head > p { max-width: 560px; }
  .scene-grid { grid-template-columns: 1fr; margin-top: 34px; }
  .scene-item,
  .scene-item:nth-child(even) {
    padding: 23px 0 25px;
    border-left: 0;
  }
  .notice { grid-template-columns: 1fr; padding: 32px; gap: 30px; }
  .notice-actions { justify-items: start; }
  .support-grid { grid-template-columns: 1fr; }
  .other-product { grid-template-columns: auto 1fr; }
  .other-product .arrow { display: none; }
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #f6f4ee;
    --muted: #a6a5aa;
    --paper: #09090a;
    --card: rgba(31, 31, 34, 0.86);
    --line: rgba(255, 255, 255, 0.11);
  }
  body { background: radial-gradient(circle at 86% 4%, rgba(255, 199, 44, 0.13), transparent 24rem), var(--paper); }
  .eyebrow { color: #ffd766; }
  .scene-icon { color: #ffd766; }
  .article p, .article li { color: #c4c3c8; }
}

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