:root {
  --black: #0c0c0d;
  --ink: #1a1a1c;
  --muted: #716e69;
  --line: #e8e3db;
  --white: #fff;
  --gold: #c8a462;
  --gold-deep: #71511b;
  --shadow: 0 28px 70px rgba(26, 21, 15, 0.1);
  color-scheme: light;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Segoe UI", sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* { box-sizing: border-box; }
html { background: var(--white); scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; color: var(--ink); background: var(--white); -webkit-font-smoothing: antialiased; }
img, video { display: block; max-width: 100%; }
button, video { font: inherit; }
a { color: inherit; }

.site-shell { width: min(100% - 40px, 1080px); margin-inline: auto; }
.site-header { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 20px; border-bottom: 1px solid rgba(120, 110, 95, 0.16); }
.brand { display: inline-flex; align-items: baseline; gap: 11px; text-decoration: none; letter-spacing: 0.025em; }
.brand strong { font-size: 17px; font-weight: 780; }
.brand span { font-size: 15px; font-weight: 620; }
.brand span[aria-hidden] { color: #b6afa4; font-weight: 400; }
.header-label { color: var(--muted); font-size: 13px; font-weight: 650; letter-spacing: 0.06em; }
.eyebrow { margin: 0; color: var(--gold-deep); font-size: 12px; font-weight: 760; letter-spacing: 0.16em; }

.home-hero { padding: clamp(68px, 12vw, 132px) 0 clamp(58px, 9vw, 96px); }
.home-hero h1 { margin: 20px 0 0; max-width: 760px; font-size: clamp(52px, 10vw, 104px); line-height: 0.97; letter-spacing: -0.062em; font-weight: 790; }
.home-intro { margin: 30px 0 0; max-width: 650px; color: var(--muted); font-size: clamp(16px, 2.2vw, 19px); line-height: 1.85; }
.product-index { padding: 0 0 76px; }
.section-title-row { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 24px; }
.section-title-row h2 { margin: 9px 0 0; font-size: clamp(27px, 5vw, 40px); letter-spacing: -0.035em; }
.count-badge { padding: 8px 13px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); font-size: 12px; white-space: nowrap; }
.product-card { min-height: 470px; display: grid; grid-template-columns: minmax(0, 0.78fr) minmax(360px, 1.22fr); overflow: hidden; border: 1px solid #2d2d30; border-radius: 30px; background: var(--black); color: var(--white); text-decoration: none; box-shadow: var(--shadow); }
.product-card-copy { padding: clamp(34px, 6vw, 66px); display: flex; flex-direction: column; align-items: flex-start; justify-content: center; }
.product-brand { margin: 0; color: #cbc5bb; font-size: 13px; font-weight: 640; letter-spacing: 0.07em; }
.product-card h3 { margin: 17px 0 0; font-size: clamp(58px, 10vw, 90px); line-height: 0.94; letter-spacing: -0.065em; }
.product-card-copy > p:not(.product-brand) { margin: 17px 0 0; color: #b8b3ab; line-height: 1.6; }
.card-link { margin-top: 46px; min-height: 46px; padding: 0 19px; display: inline-flex; align-items: center; gap: 13px; border: 1px solid #5d5549; border-radius: 999px; background: #171719; font-size: 14px; font-weight: 670; transition: border-color 160ms ease, background 160ms ease, transform 160ms ease; }
.product-card:hover .card-link { border-color: var(--gold); background: #221e18; transform: translateX(2px); }
.product-card:focus-visible { outline: 4px solid rgba(200, 164, 98, 0.38); outline-offset: 5px; }
.product-card-media { min-height: 470px; display: grid; place-items: center; overflow: hidden; background: #f0e8dc; }
.product-card-media img { width: 100%; height: 100%; object-fit: cover; }
.future-note { margin: 22px 2px 0; color: var(--muted); font-size: 13px; line-height: 1.7; }

.site-footer { padding: 34px 0 max(38px, env(safe-area-inset-bottom)); display: flex; justify-content: space-between; gap: 20px; border-top: 1px solid var(--line); color: #69645e; font-size: 12px; line-height: 1.6; }
.site-footer p { margin: 0; }
.footer-note { color: #99938a; text-align: right; }
.footer-note a { text-underline-offset: 3px; }

.support-page { background: #fbfaf8; }
.support-page .site-header { width: min(100% - 40px, 860px); margin-inline: auto; }
.support-main { width: min(100% - 40px, 860px); margin-inline: auto; }
.breadcrumb { padding: 28px 0 0; display: flex; align-items: center; gap: 10px; color: #807a72; font-size: 13px; }
.breadcrumb a { text-underline-offset: 3px; }
.breadcrumb span[aria-hidden] { color: #b8b1a7; }
.product-hero { padding: clamp(46px, 8vw, 82px) 0 48px; text-align: center; }
.product-hero h1 { margin: 13px 0 0; font-size: clamp(56px, 13vw, 94px); line-height: 0.95; letter-spacing: -0.065em; }
.product-hero .guide-title { margin: 14px 0 0; font-size: clamp(26px, 6vw, 40px); font-weight: 710; letter-spacing: 0.03em; }
.hero-note { margin: 18px auto 0; max-width: 34em; color: var(--muted); font-size: 15px; line-height: 1.75; }
.primary-jump { margin: 24px auto 0; min-height: 48px; padding: 0 19px; display: inline-flex; align-items: center; gap: 12px; border: 1px solid #2f2d2a; border-radius: 999px; background: var(--black); color: var(--white); text-decoration: none; font-size: 14px; font-weight: 690; box-shadow: 0 10px 28px rgba(20, 18, 15, 0.12); }
.primary-jump:hover { background: #26231f; }
.primary-jump:focus-visible { outline: 4px solid rgba(200, 164, 98, 0.38); outline-offset: 4px; }
.product-stage { position: relative; width: min(100%, 650px); aspect-ratio: 1 / 0.74; margin: 28px auto 18px; display: grid; place-items: center; overflow: hidden; border-radius: 28px; background: var(--white); }
.product-stage::after { content: ""; position: absolute; inset: auto 18% 5% 18%; height: 10%; border-radius: 50%; background: rgba(44, 35, 24, 0.09); filter: blur(20px); }
.product-image { position: absolute; inset: 0; z-index: 1; width: 100%; height: 100%; object-fit: contain; mix-blend-mode: multiply; transition: opacity 160ms ease, transform 220ms ease; }
.product-image.is-changing { opacity: 0; transform: translateY(5px) scale(0.99); }
.color-picker { margin-top: 18px; }
.color-picker > p { margin: 0 0 13px; color: #67625c; font-size: 13px; }
.color-options { width: min(100%, 430px); margin: 0 auto; padding: 4px; display: grid; grid-template-columns: repeat(2, 1fr); gap: 4px; border: 1px solid var(--line); border-radius: 999px; background: var(--white); }
.color-button { min-height: 48px; padding: 8px 14px; display: inline-flex; align-items: center; justify-content: center; gap: 10px; border: 1px solid transparent; border-radius: 999px; background: transparent; color: #514d47; cursor: pointer; }
.color-button:hover { background: #f7f4ef; }
.color-button:focus-visible { outline: 3px solid rgba(200, 164, 98, 0.34); outline-offset: 2px; }
.color-button[aria-pressed="true"] { border-color: #d8bb83; background: #fbf8f2; color: var(--ink); }
.swatch { width: 19px; height: 19px; border-radius: 50%; box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.12); }

.support-section { margin-top: 24px; padding: clamp(26px, 6vw, 46px); border: 1px solid var(--line); border-radius: 26px; background: var(--white); box-shadow: 0 18px 50px rgba(40, 32, 22, 0.06); }
.support-section:target { scroll-margin-top: 18px; }
.section-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 24px; }
.section-heading h2 { margin: 8px 0 0; font-size: clamp(25px, 5vw, 35px); letter-spacing: -0.025em; }
.section-heading p:not(.eyebrow) { margin: 10px 0 0; max-width: 36em; color: var(--muted); font-size: 14px; line-height: 1.7; }
.status-pill { flex: 0 0 auto; padding: 8px 12px; border: 1px solid #dfca9f; border-radius: 999px; background: #fbf6ec; color: var(--gold-deep); font-size: 12px; font-weight: 680; }
.video-frame { width: 100%; aspect-ratio: 16 / 9; margin-top: 26px; overflow: hidden; border-radius: 18px; background: #080808; }
.video-frame video { width: 100%; height: 100%; object-fit: contain; background: #080808; }
.video-pending { width: 100%; height: 100%; display: grid; place-items: center; padding: 30px; color: #d6d0c8; text-align: center; }
.video-pending[hidden], #guide-video[hidden] { display: none; }
.update-note { margin: 18px 0 0; padding: 16px 18px; border-left: 3px solid var(--gold); border-radius: 0 12px 12px 0; background: #faf6ee; color: #59534a; font-size: 13px; line-height: 1.7; }
.support-grid { margin-top: 24px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.support-card { min-height: 190px; padding: 24px; display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: 20px; background: var(--white); }
.support-card .card-kicker { margin: 0; color: var(--gold-deep); font-size: 11px; font-weight: 750; letter-spacing: 0.12em; }
.support-card h3 { margin: 15px 0 0; font-size: 21px; letter-spacing: -0.02em; }
.support-card p { margin: 11px 0 0; color: var(--muted); font-size: 13px; line-height: 1.7; }
.support-card .card-status { margin-top: auto; padding-top: 24px; color: #9a938a; font-size: 12px; }
.support-bottom { margin: 42px 0 0; padding: 30px 0 50px; display: flex; align-items: center; justify-content: space-between; gap: 20px; border-top: 1px solid var(--line); }
.back-link { min-height: 46px; padding: 0 18px; display: inline-flex; align-items: center; gap: 10px; border: 1px solid var(--line); border-radius: 999px; background: var(--white); text-decoration: none; font-size: 13px; font-weight: 680; }
.revision { color: #979087; font-size: 12px; }
.support-page .site-footer { width: min(100% - 40px, 860px); }
.noscript-note { margin: 0; padding: 14px 20px; text-align: center; background: #fff5d6; color: #5b4813; }

@media (max-width: 760px) {
  .product-card { grid-template-columns: 1fr; }
  .product-card-copy { min-height: 310px; }
  .product-card-media { min-height: auto; aspect-ratio: 1 / 0.82; }
  .support-grid { grid-template-columns: 1fr; }
  .support-card { min-height: 0; }
}

@media (max-width: 520px) {
  .site-shell, .support-main, .support-page .site-header, .support-page .site-footer { width: min(100% - 28px, 1080px); }
  .site-header { min-height: 68px; }
  .brand { gap: 8px; }
  .brand strong { font-size: 15px; }
  .brand span { font-size: 13px; }
  .home-hero { padding-top: 58px; }
  .section-title-row { align-items: flex-start; }
  .product-card { border-radius: 24px; }
  .product-card-copy { min-height: 282px; padding: 34px 30px; }
  .card-link { margin-top: 34px; }
  .site-footer { flex-direction: column; }
  .footer-note { text-align: left; }
  .product-hero { padding-top: 38px; }
  .product-stage { width: calc(100% + 10px); margin-left: -5px; border-radius: 22px; }
  .section-heading { flex-direction: column; gap: 14px; }
  .support-section { border-radius: 22px; }
  .support-bottom { align-items: flex-start; flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}