/* ==========================================================================
   Hibot 爱阔 官网 · 全站样式
   配色只用黑 / 白 / 未来蓝（#021EE6，来自《Hibot 视觉规范》）
   ========================================================================== */

:root {
  --blue: #021ee6;
  --blue-hover: #0016b8;
  --blue-soft: #e8ecff;
  --blue-on-dark: #5b78ff;

  --ink: #1d1d1f;
  --ink-2: #6e6e73;
  --ink-3: #86868b;
  --line: #d2d2d7;

  --bg: #ffffff;
  --bg-alt: #f5f5f7;
  --dark: #000000;
  --dark-2: #111114;
  --dark-3: #1c1c21;
  --on-dark: #f5f5f7;
  --on-dark-2: #a1a1a6;

  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans SC", "MiSans",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;

  --nav-h: 52px;
  --subnav-h: 52px;
  --maxw: 1180px;
  --gutter: 24px;
  --radius-lg: 28px;
  --radius: 18px;
  --radius-sm: 12px;
  --section-y: clamp(80px, 11vw, 160px);
  --ease: cubic-bezier(0.25, 0.1, 0.25, 1);
}

@media (max-width: 734px) {
  :root { --gutter: 16px; --radius-lg: 22px; }
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 16px); }
html:has(.page-product) { scroll-padding-top: calc(var(--subnav-h) + 16px); }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
img, video, svg { display: block; max-width: 100%; }
img { height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
h1, h2, h3, h4, p, ul, ol, dl, dd, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; border-radius: 4px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.skip-link { position: absolute; left: 12px; top: -60px; z-index: 200; background: var(--blue); color: #fff; padding: 10px 16px; border-radius: 10px; }
.skip-link:focus { top: 12px; }

/* ---------- Layout ---------- */
.container { width: 100%; max-width: calc(var(--maxw) + var(--gutter) * 2); margin: 0 auto; padding: 0 var(--gutter); }
.container--narrow { max-width: calc(820px + var(--gutter) * 2); }
.container--wide { max-width: calc(1440px + var(--gutter) * 2); }
.section { padding: var(--section-y) 0; position: relative; }
.section--tight { padding: clamp(56px, 7vw, 96px) 0; }
.bg-alt { background: var(--bg-alt); }
.bg-dark { background: var(--dark); color: var(--on-dark); }
.bg-dark-2 { background: var(--dark-2); color: var(--on-dark); }
.bg-studio { background: #ffffff; }
.center { text-align: center; }

/* ---------- Typography ---------- */
.eyebrow { font-size: clamp(15px, 1.4vw, 19px); font-weight: 600; color: var(--blue); letter-spacing: 0.01em; margin-bottom: 12px; }
.bg-dark .eyebrow, .bg-dark-2 .eyebrow, .on-dark .eyebrow { color: var(--blue-on-dark); }
.display { font-size: clamp(40px, 7.2vw, 92px); line-height: 1.06; font-weight: 700; letter-spacing: -0.015em; }
.headline { font-size: clamp(32px, 5.2vw, 64px); line-height: 1.1; font-weight: 700; letter-spacing: -0.01em; }
.title { font-size: clamp(24px, 3vw, 40px); line-height: 1.18; font-weight: 700; }
.subtitle { font-size: clamp(20px, 2.2vw, 28px); line-height: 1.3; font-weight: 600; }
.lead { font-size: clamp(17px, 1.7vw, 21px); line-height: 1.6; color: var(--ink-2); }
.bg-dark .lead, .bg-dark-2 .lead, .on-dark .lead { color: var(--on-dark-2); }
.lead strong, .muted strong { color: var(--ink); font-weight: 600; }
.bg-dark .lead strong, .bg-dark-2 .lead strong { color: var(--on-dark); }
.muted { color: var(--ink-2); }
.small { font-size: 14px; line-height: 1.55; }
.gradient-text {
  background: linear-gradient(90deg, #6f86ff 0%, #ffffff 55%, #8fa2ff 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.text-blue { color: var(--blue); }
.bg-dark .text-blue, .bg-dark-2 .text-blue { color: var(--blue-on-dark); }
.section-head { max-width: 820px; margin: 0 auto clamp(40px, 6vw, 72px); text-align: center; }
.section-head .lead { margin-top: 18px; }
.section-head--left { margin-left: 0; text-align: left; }
.br-desktop { display: none; }
@media (min-width: 735px) { .br-desktop { display: inline; } }

/* ---------- Buttons & links ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 44px; padding: 10px 22px; border-radius: 980px;
  font-size: 17px; font-weight: 500; line-height: 1.2; white-space: nowrap;
  transition: background-color .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease), transform .2s var(--ease);
}
.btn:active { transform: scale(0.98); }
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: var(--blue-hover); }
.btn-secondary { border: 1px solid var(--blue); color: var(--blue); }
.btn-secondary:hover { background: var(--blue); color: #fff; }
.btn-light { background: #fff; color: var(--ink); }
.btn-light:hover { background: #e8e8ed; }
.btn-ghost-light { border: 1px solid rgba(255,255,255,.7); color: #fff; }
.btn-ghost-light:hover { background: #fff; color: var(--ink); }
.btn-sm { min-height: 30px; padding: 5px 14px; font-size: 13px; }
.btn-row { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.center .btn-row, .btn-row--center { justify-content: center; }
.link-arrow { color: var(--blue); font-size: 17px; display: inline-flex; align-items: center; gap: 4px; }
.link-arrow::after { content: "›"; font-size: 1.2em; line-height: 1; transform: translateY(-1px); transition: transform .2s var(--ease); }
.link-arrow:hover { text-decoration: underline; text-underline-offset: 3px; }
.link-arrow:hover::after { transform: translate(2px, -1px); }
.bg-dark .link-arrow, .bg-dark-2 .link-arrow, .on-dark .link-arrow { color: var(--blue-on-dark); }
.links { display: flex; flex-wrap: wrap; gap: 8px 28px; justify-content: center; }

/* ---------- Global nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 100; height: var(--nav-h);
  background: rgba(255, 255, 255, 0.78);
  -webkit-backdrop-filter: saturate(180%) blur(20px); backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}
.nav--dark { background: rgba(0, 0, 0, 0.72); border-bottom-color: rgba(255,255,255,.08); color: var(--on-dark); }
.page-product .nav { position: relative; }
.nav__inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.nav__logo img { height: 22px; width: auto; }
.nav__menu { display: flex; align-items: center; gap: clamp(20px, 3vw, 40px); font-size: 14px; }
.nav__menu a { opacity: .86; transition: opacity .2s; }
.nav__menu a:hover, .nav__menu a[aria-current="page"] { opacity: 1; }
.nav__menu a[aria-current="page"] { color: var(--blue); }
.nav--dark .nav__menu a[aria-current="page"] { color: #fff; }
.nav__actions { display: flex; align-items: center; gap: 12px; }
.nav__toggle { display: none; width: 44px; height: 44px; margin-right: -10px; align-items: center; justify-content: center; }
.nav__toggle span, .nav__toggle span::before, .nav__toggle span::after {
  display: block; width: 18px; height: 1.5px; background: currentColor; border-radius: 2px; position: relative; transition: transform .3s var(--ease), background-color .2s;
}
.nav__toggle span::before, .nav__toggle span::after { content: ""; position: absolute; left: 0; }
.nav__toggle span::before { top: -6px; }
.nav__toggle span::after { top: 6px; }
.nav-open .nav__toggle span { background: transparent; }
.nav-open .nav__toggle span::before { transform: translateY(6px) rotate(45deg); }
.nav-open .nav__toggle span::after { transform: translateY(-6px) rotate(-45deg); }

@media (max-width: 833px) {
  .nav__toggle { display: inline-flex; }
  .nav__menu {
    position: fixed; inset: var(--nav-h) 0 auto 0; height: calc(100dvh - var(--nav-h));
    flex-direction: column; align-items: stretch; gap: 0; padding: 12px var(--gutter) 40px;
    background: var(--bg); color: var(--ink); font-size: 22px; font-weight: 600;
    opacity: 0; visibility: hidden; transform: translateY(-8px); transition: opacity .25s, transform .25s, visibility .25s;
    overflow-y: auto;
  }
  .nav--dark .nav__menu { background: var(--dark); color: var(--on-dark); }
  .nav__menu a { padding: 14px 0; border-bottom: 1px solid rgba(128,128,128,.18); opacity: 1; }
  .nav-open .nav__menu { opacity: 1; visibility: visible; transform: none; }
  .nav-open { overflow: hidden; }
  .page-product.nav-open .nav { position: sticky; }
}

/* ---------- Product sub nav ---------- */
.subnav {
  position: sticky; top: 0; z-index: 90; height: var(--subnav-h);
  background: rgba(255,255,255,.8);
  -webkit-backdrop-filter: saturate(180%) blur(20px); backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid rgba(0,0,0,.08);
}
.subnav__inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.subnav__title { font-size: 20px; font-weight: 700; letter-spacing: -0.01em; }
.subnav__links { display: flex; align-items: center; gap: 22px; font-size: 13px; }
.subnav__links a:not(.btn) { color: var(--ink-2); }
.subnav__links a:not(.btn):hover, .subnav__links a.is-active { color: var(--ink); }
@media (max-width: 480px) { .subnav__links a:not(.btn) { display: none; } }

/* ---------- Footer ---------- */
.footnotes { background: var(--bg-alt); color: var(--ink-2); font-size: 12px; line-height: 1.7; padding: 32px 0 0; }
.footnotes ol { list-style: none; counter-reset: fn; }
.footnotes li { margin-bottom: 6px; }
.footnotes li:last-child { margin-bottom: 0; }  /* 避免最后一行的间距「漏」到灰底外面，在页脚上方露出一条白线 */
.footer { background: var(--bg-alt); color: var(--ink-2); font-size: 13px; line-height: 1.6; padding: 36px 0 28px; }
.footer__grid { display: grid; grid-template-columns: repeat(4, 1fr) 1.2fr; gap: 24px; padding-bottom: 28px; border-bottom: 1px solid var(--line); }
.footer h4 { color: var(--ink); font-size: 13px; font-weight: 600; margin-bottom: 10px; }
.footer li { margin: 6px 0; }
.footer a:hover { color: var(--ink); text-decoration: underline; text-underline-offset: 3px; }
.footer__qr { display: flex; gap: 18px; }
.footer__qr figure { text-align: center; font-size: 12px; }
.footer__qr img { width: 92px; height: 92px; border-radius: 10px; background: #fff; padding: 6px; margin-bottom: 6px; }
.footer__bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px 24px; padding-top: 18px; }
.footer__bottom .footer__logo img { height: 18px; width: auto; }
.footer__legal { display: flex; flex-wrap: wrap; gap: 6px 18px; align-items: center; }
@media (max-width: 833px) {
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .footer__qr-col { grid-column: 1 / -1; }
}

/* ---------- Reveal animation (only when JS is available) ---------- */
.js .reveal { opacity: 0; transform: translateY(28px); transition: opacity .9s var(--ease), transform .9s var(--ease); }
.js .reveal.is-visible { opacity: 1; transform: none; }
.js .reveal-d1 { transition-delay: .08s; }
.js .reveal-d2 { transition-delay: .16s; }
.js .reveal-d3 { transition-delay: .24s; }
.js .reveal-scale { opacity: 0; transform: scale(.94); transition: opacity 1.1s var(--ease), transform 1.4s var(--ease); }
.js .reveal-scale.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .js .reveal, .js .reveal-scale { opacity: 1; transform: none; }
}

/* ==========================================================================
   Home
   ========================================================================== */
.hero-home {
  position: relative; overflow: hidden; color: #fff; background: #0a1a5c;
  min-height: 620px; height: calc(100svh - var(--nav-h)); max-height: 960px;
  display: flex; flex-direction: column; align-items: center; text-align: center;
}
.hero-home__media, .hero-home__media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.hero-home__media img { object-position: 30% 62%; }
.js .hero-home__media img { transform: scale(1.06); transition: transform 2.4s var(--ease); }
.js .is-loaded .hero-home__media img { transform: scale(1); }
.hero-home::before {
  content: ""; position: absolute; inset: 0; z-index: 1;
  background:
    linear-gradient(270deg, rgba(0, 4, 30, .72) 0%, rgba(0, 4, 30, .5) 30%, rgba(0, 4, 30, 0) 58%),
    linear-gradient(0deg, rgba(0,0,0,.35) 0%, rgba(0,0,0,0) 30%);
}
.hero-home__content {
  position: relative; z-index: 2; flex: 1; display: flex; flex-direction: column; justify-content: center;
  align-items: flex-start; text-align: left; padding-left: max(var(--gutter), 56%); padding-bottom: 40px;
}
.hero-home__content .btn-row { justify-content: flex-start; }
.hero-home__name { font-size: clamp(20px, 2vw, 26px); font-weight: 600; opacity: .92; margin-bottom: 10px; }
.hero-home .display { font-size: clamp(40px, 5.6vw, 84px); text-shadow: 0 2px 30px rgba(0,0,0,.18); }
.hero-home .lead { color: rgba(255,255,255,.88); margin: 18px 0 30px; max-width: 24em; }
@media (max-width: 734px) {
  .hero-home { height: auto; min-height: calc(100svh - var(--nav-h)); }
  .hero-home__media img { object-position: 50% 70%; }
  .hero-home::before { background: linear-gradient(180deg, rgba(0, 6, 50, .7) 0%, rgba(0, 6, 50, .35) 42%, rgba(0,0,0,0) 62%); }
  .hero-home__content { justify-content: flex-start; align-items: center; text-align: center; padding: 44px var(--gutter) 0; flex: 0 0 auto; }
  .hero-home__content .btn-row { justify-content: center; }
  .hero-home .lead { margin: 14px auto 24px; }
}
.hero-home__scroll { position: absolute; z-index: 2; bottom: 24px; left: 50%; transform: translateX(-50%); font-size: 12px; letter-spacing: .2em; opacity: .7; }

/* promo tiles */
.tiles { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; padding: 12px; }
.tile {
  position: relative; overflow: hidden; border-radius: var(--radius-lg); min-height: 580px;
  display: flex; flex-direction: column; align-items: center; text-align: center; padding: 52px 28px 0;
}
.tile--wide { grid-column: 1 / -1; }
.tile .title { margin-bottom: 8px; }
.tile .lead { margin-bottom: 18px; }
.tile__media { margin-top: auto; width: 100%; display: flex; justify-content: center; align-items: flex-end; }
.tile-colors { display: flex; justify-content: center; align-items: flex-end; gap: 0; width: 100%; max-width: 760px; padding-bottom: 36px; }
.tile-colors > img { width: 32%; margin: 0; }
.tile-colors > img:nth-child(2) { width: 36%; transform: translateY(-10px); }
.tile-app__phone { width: min(300px, 64%); margin-bottom: -60px; }
@media (max-width: 833px) {
  .tiles { grid-template-columns: 1fr; padding: 10px; gap: 10px; }
  .tile { min-height: 500px; padding-top: 44px; }
}

/* feature carousel */
.carousel { position: relative; }
.carousel__track {
  display: flex; gap: 20px; overflow-x: auto; scroll-snap-type: x mandatory; scroll-behavior: smooth;
  padding: 4px max(var(--gutter), calc((100vw - var(--maxw)) / 2)) 28px;
  scroll-padding-inline: max(var(--gutter), calc((100vw - var(--maxw)) / 2));
  scrollbar-width: none;
}
.carousel__track::-webkit-scrollbar { display: none; }
.card {
  flex: 0 0 auto; width: clamp(280px, 30vw, 372px); aspect-ratio: 372 / 560; scroll-snap-align: start;
  position: relative; overflow: hidden; border-radius: var(--radius-lg); background: var(--dark-2); color: #fff;
  display: flex; flex-direction: column; padding: 30px 28px; isolation: isolate;
  transition: transform .4s var(--ease);
}
.card:hover { transform: scale(1.012); }
.card__media { position: absolute; inset: 0; z-index: -1; }
.card__media img { width: 100%; height: 100%; object-fit: cover; }
.card__media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(0,0,0,.55) 0%, rgba(0,0,0,0) 45%); }
.card__kicker { font-size: 13px; font-weight: 600; opacity: .8; margin-bottom: 8px; }
.card__title { font-size: clamp(22px, 2vw, 27px); line-height: 1.25; font-weight: 700; }
.card--light { background: var(--bg-alt); color: var(--ink); }
.card--light .card__media::after { display: none; }
.card--blue { background: var(--blue); }
.card--blue .card__media::after { display: none; }
.card__big { margin-top: auto; font-size: clamp(64px, 7vw, 96px); font-weight: 700; line-height: 1; letter-spacing: -0.03em; }
.card__big small { font-size: .32em; font-weight: 600; letter-spacing: 0; margin-left: 6px; }
.card__note { font-size: 14px; opacity: .8; margin-top: 10px; }
.card__lcd { margin: auto 0; }
.carousel__nav { display: flex; justify-content: flex-end; gap: 14px; padding: 0 var(--gutter); max-width: calc(var(--maxw) + var(--gutter) * 2); margin: 0 auto; }
.carousel__btn {
  width: 40px; height: 40px; border-radius: 50%; background: rgba(210,210,215,.64); color: var(--ink);
  display: inline-flex; align-items: center; justify-content: center; transition: background-color .2s, opacity .2s;
}
.carousel__btn:hover { background: rgba(210,210,215,.9); }
.carousel__btn[disabled] { opacity: .35; cursor: default; }
.carousel__btn svg { width: 16px; height: 16px; }

/* story band */
.band {
  position: relative; overflow: hidden; color: #fff; min-height: clamp(560px, 80vh, 820px);
  display: flex; align-items: center;
}
.band__media, .band__media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.band::before { content: ""; position: absolute; inset: 0; z-index: 1; background: linear-gradient(90deg, rgba(0,0,0,.66) 0%, rgba(0,0,0,.25) 55%, rgba(0,0,0,0) 100%); }
.band--center::before { background: linear-gradient(180deg, rgba(0,0,0,.35), rgba(0,0,0,.5)); }
.band__content { position: relative; z-index: 2; max-width: 560px; }
.band--center .band__content { max-width: 760px; margin: 0 auto; text-align: center; }
.band .lead { color: rgba(255,255,255,.86); margin: 18px 0 28px; }

/* scenes grid */
.scenes { display: grid; grid-template-columns: 1.15fr 1fr 1fr; grid-template-rows: 1fr 1fr; gap: 12px; height: clamp(520px, 62vw, 760px); }
.scene { position: relative; overflow: hidden; border-radius: var(--radius); background: var(--dark-2); }
.scene img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.2s var(--ease); }
.scene:hover img { transform: scale(1.04); }
.scene figcaption { position: absolute; left: 18px; bottom: 16px; color: #fff; font-weight: 600; font-size: 17px; text-shadow: 0 1px 12px rgba(0,0,0,.4); }
.scene--tall { grid-row: 1 / 3; }
@media (max-width: 734px) {
  .scenes { grid-template-columns: 1fr 1fr; grid-template-rows: 320px 200px 200px; height: auto; }
  .scene--tall { grid-row: auto; grid-column: 1 / -1; }
}

/* coming soon */
.teasers { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.teaser {
  position: relative; overflow: hidden; border-radius: var(--radius-lg); background: #050510;
  aspect-ratio: 4 / 3.4; display: flex; flex-direction: column; justify-content: flex-end; padding: 32px;
  isolation: isolate; border: 1px solid rgba(91,120,255,.18);
}
.teaser img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: -1; transform: scale(1.04); }
.js .teaser img { animation: breathe 7s ease-in-out infinite; }
.teaser::after { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(180deg, rgba(0,0,0,0) 45%, rgba(0,0,0,.75) 100%); }
.teaser__tag { position: absolute; top: 24px; left: 28px; font-size: 12px; letter-spacing: .14em; color: var(--blue-on-dark); border: 1px solid rgba(91,120,255,.5); padding: 5px 12px; border-radius: 99px; background: rgba(2,30,230,.12); }
.teaser__year { position: absolute; top: 20px; right: 28px; font-size: clamp(28px, 3vw, 40px); font-weight: 700; color: rgba(255,255,255,.18); letter-spacing: .02em; }
.teaser h3 { font-size: clamp(22px, 2.4vw, 30px); font-weight: 700; margin-bottom: 6px; }
.teaser p { color: var(--on-dark-2); }
@keyframes breathe { 0%, 100% { transform: scale(1.04); opacity: .92; } 50% { transform: scale(1.09); opacity: 1; } }
@media (max-width: 734px) { .teasers { grid-template-columns: 1fr; } }

/* join (app + wechat) */
.join { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.join__card { background: #fff; border-radius: var(--radius-lg); padding: clamp(28px, 4vw, 48px); display: flex; gap: 28px; align-items: center; }
.bg-alt .join__card { background: #fff; }
.join__card .qr { flex: 0 0 auto; width: clamp(112px, 12vw, 148px); }
.join__card h3 { font-size: clamp(22px, 2.2vw, 28px); margin-bottom: 8px; }
.join__card p { color: var(--ink-2); margin-bottom: 16px; }
.qr img { width: 100%; height: auto; border-radius: 12px; border: 1px solid var(--line); background: #fff; padding: 6px; }
.qr figcaption { font-size: 12px; color: var(--ink-3); text-align: center; margin-top: 6px; }
@media (max-width: 833px) { .join { grid-template-columns: 1fr; } }
@media (max-width: 480px) { .join__card { flex-direction: column; align-items: flex-start; } }

/* ==========================================================================
   Product page (S50)
   ========================================================================== */
.p-hero { padding: clamp(40px, 6vw, 72px) 0 0; overflow: hidden; }
.p-hero__grid { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 24px; }
.p-hero__copy { padding-bottom: 40px; }
.p-hero__copy .display { margin-bottom: 10px; }
.p-hero__tagline { font-size: clamp(26px, 3.4vw, 44px); font-weight: 700; line-height: 1.2; margin-bottom: 18px; }
.p-hero__copy .lead { margin-bottom: 28px; max-width: 26em; }
.p-hero__media { position: relative; justify-self: center; width: min(460px, 100%); aspect-ratio: 720 / 1060; overflow: hidden; }
.p-hero__media video, .p-hero__media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: 50% 52%; }
@media (max-width: 833px) {
  .p-hero__grid { grid-template-columns: 1fr; text-align: center; }
  .p-hero__copy .lead { margin-left: auto; margin-right: auto; }
  .p-hero__copy .btn-row { justify-content: center; }
  .p-hero__copy { padding-bottom: 0; }
  .p-hero__media { width: min(380px, 86%); }
}

.highlights { display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.highlight { padding: 28px 20px; text-align: center; }
.highlight + .highlight { border-left: 1px solid var(--line); }
.highlight__value { font-size: clamp(24px, 2.6vw, 34px); font-weight: 700; line-height: 1.15; letter-spacing: -0.01em; }
.highlight__value sup { font-size: .45em; vertical-align: super; font-weight: 600; margin-left: 2px; }
.highlight__label { font-size: 14px; color: var(--ink-2); margin-top: 6px; }
@media (max-width: 833px) {
  .highlights { grid-template-columns: repeat(2, 1fr); border-bottom: 0; }
  .highlight { border-bottom: 1px solid var(--line); }
  .highlight + .highlight { border-left: 0; }
  .highlight:nth-child(even) { border-left: 1px solid var(--line); }
  .highlight:last-child { grid-column: 1 / -1; border-left: 0; }
}

/* voice demo */
.voice { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: clamp(32px, 6vw, 80px); align-items: center; }
.voice__product { position: relative; }
.voice__product img { width: min(420px, 100%); margin: 0 auto; }
.voice__glow { position: absolute; left: 50%; top: 32%; width: 46%; aspect-ratio: 1; transform: translate(-30%, -50%); border-radius: 50%; background: radial-gradient(circle, rgba(91,120,255,.55), rgba(2,30,230,0) 70%); filter: blur(10px); pointer-events: none; opacity: 0; transition: opacity .6s; }
.voice[data-state="listening"] .voice__glow, .voice[data-state="playing"] .voice__glow { opacity: 1; }
.tabs { display: inline-flex; padding: 4px; border-radius: 99px; background: var(--dark-3); margin-bottom: 28px; }
.tab { padding: 8px 20px; border-radius: 99px; font-size: 15px; color: var(--on-dark-2); transition: background-color .25s, color .25s; }
.tab[aria-selected="true"] { background: #fff; color: var(--ink); }
.voice__panel[hidden] { display: none; }
.voice__gesture { display: flex; align-items: center; gap: 12px; font-size: 15px; color: var(--on-dark-2); margin-bottom: 14px; }
.voice__key { display: inline-flex; align-items: center; justify-content: center; min-width: 64px; height: 30px; padding: 0 12px; border-radius: 15px; background: #2a2a30; color: #fff; font-weight: 600; font-size: 13px; letter-spacing: .02em; }
.voice__panel h3 { font-size: clamp(24px, 2.6vw, 34px); margin-bottom: 12px; line-height: 1.25; }
.voice__panel > p { color: var(--on-dark-2); margin-bottom: 24px; max-width: 30em; }
.voice__stage { background: var(--dark-2); border: 1px solid #222228; border-radius: var(--radius); padding: 22px; display: grid; grid-template-columns: 1fr auto; gap: 18px; align-items: center; }
.voice__bubble { font-size: 17px; min-height: 2.6em; display: flex; align-items: center; gap: 12px; }
.voice__bubble .q { opacity: 0; transform: translateY(6px); transition: opacity .4s, transform .4s; }
.voice[data-state="listening"] .voice__bubble .q, .voice[data-state="playing"] .voice__bubble .q { opacity: 1; transform: none; }
.wave { display: inline-flex; gap: 3px; align-items: center; height: 22px; }
.wave i { width: 3px; height: 6px; border-radius: 2px; background: var(--blue-on-dark); }
.voice[data-state="listening"] .wave i { animation: wave 0.9s ease-in-out infinite; }
.wave i:nth-child(2) { animation-delay: .1s !important; } .wave i:nth-child(3) { animation-delay: .2s !important; } .wave i:nth-child(4) { animation-delay: .3s !important; } .wave i:nth-child(5) { animation-delay: .4s !important; }
@keyframes wave { 0%, 100% { height: 6px; } 50% { height: 22px; } }
.voice__status { font-size: 13px; color: var(--on-dark-2); margin-top: 6px; }
.voice__replay { font-size: 14px; color: var(--blue-on-dark); margin-top: 18px; display: inline-flex; align-items: center; gap: 6px; }
.voice__replay:hover { text-decoration: underline; text-underline-offset: 3px; }
@media (max-width: 833px) {
  .voice { grid-template-columns: 1fr; }
  .voice__product img { width: min(260px, 70%); }
  .voice__stage { grid-template-columns: 1fr; justify-items: start; }
}

/* LCD screen frame (mimics the S50's pill-shaped 0.96" screen) */
.lcd {
  position: relative; width: 196px; aspect-ratio: 2 / 1; border-radius: 26px; overflow: hidden;
  background: #000; box-shadow: 0 0 0 6px #232328, 0 0 0 7px #3a3a40, 0 18px 40px rgba(0,0,0,.45);
}
.lcd img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0; transition: opacity .45s var(--ease); }
.lcd img.is-on { opacity: 1; }
.lcd::after { content: ""; position: absolute; inset: 0; border-radius: inherit; background: linear-gradient(160deg, rgba(255,255,255,.12) 0%, rgba(255,255,255,0) 40%); pointer-events: none; }
.lcd--lg { width: min(560px, 86vw); border-radius: clamp(36px, 7vw, 74px); box-shadow: 0 0 0 clamp(10px, 1.6vw, 16px) #1d1d1f, 0 0 0 calc(clamp(10px, 1.6vw, 16px) + 1px) #46464c, 0 40px 80px rgba(0,0,0,.25); }
.screen-demo { display: flex; flex-direction: column; align-items: center; gap: 44px; }
.screen-demo__caption { text-align: center; min-height: 3.4em; }
.screen-demo__caption strong { display: block; font-size: 21px; }
.screen-demo__caption span { color: var(--ink-2); font-size: 15px; }
.dots { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }
.dot { padding: 7px 14px; border-radius: 99px; font-size: 14px; color: var(--ink-2); background: #fff; border: 1px solid var(--line); transition: all .2s; }
.dot[aria-pressed="true"] { background: var(--ink); color: #fff; border-color: var(--ink); }

/* acoustic diagram */
.acoustic { max-width: 980px; margin: 0 auto; }
.acoustic svg { width: 100%; height: auto; overflow: visible; }
.acoustic .ring { fill: none; stroke: var(--blue-on-dark); stroke-width: 1.5; opacity: 0; transform-origin: 690px 230px; transform-box: view-box; }
.js .acoustic.is-visible .ring { animation: ripple 3.6s var(--ease) infinite; }
.acoustic .ring:nth-of-type(2) { animation-delay: 1.2s !important; }
.acoustic .ring:nth-of-type(3) { animation-delay: 2.4s !important; }
@keyframes ripple { 0% { opacity: .9; transform: scale(.35); } 100% { opacity: 0; transform: scale(1.25); } }
.acoustic__labels { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 40px; }
.acoustic__labels div { border-top: 1px solid #2c2c33; padding-top: 16px; }
.acoustic__labels strong { display: block; font-size: 19px; margin-bottom: 4px; }
.acoustic__labels span { font-size: 14px; color: var(--on-dark-2); }
@media (max-width: 734px) { .acoustic__labels { grid-template-columns: 1fr 1fr; } }
.eq-presets { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-top: 48px; }
.eq-presets span { padding: 8px 18px; border-radius: 99px; border: 1px solid #34343b; color: var(--on-dark-2); font-size: 15px; }

/* bento */
.bento { display: grid; grid-template-columns: repeat(6, 1fr); gap: 20px; }
.bento__item { position: relative; overflow: hidden; border-radius: var(--radius-lg); background: #fff; padding: clamp(28px, 3.4vw, 44px); min-height: 360px; display: flex; flex-direction: column; isolation: isolate; }
.bg-alt .bento__item { background: #fff; }
.bento__item--dark { background: var(--dark) !important; color: #fff; }
.bento__item--blue { background: var(--blue) !important; color: #fff; }
.bento__item--photo { color: #fff; }
.bento__item--photo img.bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: -1; }
.bento__item--photo::after { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(180deg, rgba(0,0,0,.5), rgba(0,0,0,0) 55%); }
.span-2 { grid-column: span 2; } .span-3 { grid-column: span 3; } .span-4 { grid-column: span 4; } .span-6 { grid-column: span 6; }
.bento__big { font-size: clamp(56px, 7vw, 104px); font-weight: 700; line-height: 1; letter-spacing: -0.03em; margin-top: auto; }
.bento__big small { font-size: .34em; letter-spacing: 0; margin-left: 4px; font-weight: 600; }
.bento__kicker { font-size: 15px; font-weight: 600; opacity: .8; margin-bottom: 8px; }
.bento__title { font-size: clamp(22px, 2.2vw, 28px); line-height: 1.25; font-weight: 700; }
.bento__text { margin-top: 10px; opacity: .78; font-size: 15px; }
@media (max-width: 833px) {
  .bento { grid-template-columns: 1fr 1fr; gap: 12px; }
  .span-2, .span-3 { grid-column: span 1; }
  .span-4, .span-6 { grid-column: 1 / -1; }
  .bento__item { min-height: 260px; }
}
@media (max-width: 520px) { .span-2, .span-3 { grid-column: 1 / -1; } }

/* split rows */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 6vw, 96px); align-items: center; }
.split--reverse .split__media { order: 2; }
.split__media img { border-radius: var(--radius-lg); width: 100%; }
.split__copy .headline, .split__copy .title { margin-bottom: 18px; }
.split__copy .lead + .lead { margin-top: 14px; }
.mini-list { margin-top: 28px; display: grid; gap: 18px; }
.mini-list li { display: grid; grid-template-columns: 36px 1fr; gap: 14px; align-items: start; }
.mini-list .ico { width: 36px; height: 36px; border-radius: 10px; background: var(--blue-soft); color: var(--blue); display: inline-flex; align-items: center; justify-content: center; }
.bg-dark .mini-list .ico { background: rgba(91,120,255,.16); color: var(--blue-on-dark); }
.mini-list .ico svg { width: 20px; height: 20px; }
.mini-list strong { display: block; font-size: 17px; }
.mini-list span { font-size: 15px; color: var(--ink-2); }
.bg-dark .mini-list span { color: var(--on-dark-2); }
@media (max-width: 833px) {
  .split { grid-template-columns: 1fr; }
  .split--reverse .split__media { order: 0; }
}

/* full bleed photo with caption */
.photo-full { position: relative; overflow: hidden; }
.photo-full img { width: 100%; height: clamp(420px, 70vw, 860px); object-fit: cover; }
.photo-full__copy { position: absolute; left: 0; right: 0; bottom: clamp(32px, 6vw, 80px); color: #fff; text-align: center; z-index: 2; padding: 0 var(--gutter); }
.photo-full::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(0,0,0,0) 45%, rgba(0,0,0,.6)); }
.photo-full .lead { color: rgba(255,255,255,.86); margin-top: 12px; }

/* carry gallery */
.gallery { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.gallery img { width: 100%; height: 100%; object-fit: cover; border-radius: var(--radius); aspect-ratio: 9 / 14; }
.gallery__stand { grid-column: span 4; background: #fff; border-radius: var(--radius-lg); padding: 32px; display: grid; grid-template-columns: 1fr 1.6fr; gap: 24px; align-items: center; }
.gallery__stand img { aspect-ratio: auto; border-radius: 0; }
@media (max-width: 833px) {
  .gallery { grid-template-columns: 1fr 1fr; }
  .gallery__stand { grid-column: 1 / -1; grid-template-columns: 1fr; }
}

/* color picker */
.colors { text-align: center; }
.colors__stage { position: relative; max-width: 820px; margin: 0 auto; aspect-ratio: 1200 / 734; }
.colors__stage img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; opacity: 0; transform: scale(.97); transition: opacity .6s var(--ease), transform .8s var(--ease); }
.colors__stage img.is-on { opacity: 1; transform: none; }
.swatches { display: flex; justify-content: center; gap: 18px; margin-top: 28px; }
.swatch { width: 36px; height: 36px; border-radius: 50%; position: relative; box-shadow: inset 0 0 0 1px rgba(0,0,0,.12); }
.swatch::after { content: ""; position: absolute; inset: -6px; border-radius: 50%; border: 2px solid transparent; transition: border-color .2s; }
.swatch[aria-pressed="true"]::after { border-color: var(--blue); }
.swatch--black { background: #1b1b1f; }
.swatch--orange { background: #f26a1b; }
.swatch--white { background: #eee7e0; }
.colors__name { margin-top: 14px; font-size: 15px; color: var(--ink-2); min-height: 1.6em; }

/* spec table */
.specs { border-top: 1px solid var(--line); }
.specs__row { display: grid; grid-template-columns: 220px 1fr; gap: 24px; padding: 22px 0; border-bottom: 1px solid var(--line); }
.specs__row dt { font-weight: 600; }
.specs__row dd { color: var(--ink-2); }
.specs__row dd p + p { margin-top: 4px; }
@media (max-width: 734px) { .specs__row { grid-template-columns: 1fr; gap: 6px; padding: 18px 0; } }

/* buy band */
.buy-band { text-align: center; }
.buy-band img { width: min(520px, 80%); margin: 0 auto 36px; }

/* phones */
.phone { position: relative; border-radius: 13% / 6%; overflow: hidden; background: #000; box-shadow: 0 0 0 7px #1d1d1f, 0 0 0 8px #44444a, 0 30px 60px rgba(0,0,0,.22); }
.phone img { width: 100%; height: auto; }
.phones { display: flex; justify-content: center; align-items: flex-end; gap: clamp(16px, 4vw, 56px); padding: 20px 0 10px; }
.phones .phone { width: clamp(150px, 22vw, 290px); }
.phones .phone--side { width: clamp(120px, 18vw, 240px); opacity: .96; }
@media (max-width: 600px) { .phones .phone--side:last-child { display: none; } }

/* app feature rows */
.feature-row { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 6vw, 96px); align-items: center; }
.feature-row + .feature-row { margin-top: clamp(72px, 10vw, 140px); }
.feature-row:nth-child(even) .feature-row__media { order: 2; }
.feature-row__media { display: flex; justify-content: center; }
.feature-row__media .phone { width: min(300px, 70%); }
.feature-row .tag-list { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.tag-list span { padding: 6px 14px; border-radius: 99px; background: var(--bg-alt); font-size: 14px; color: var(--ink-2); }
.bg-alt .tag-list span { background: #fff; }
@media (max-width: 833px) {
  .feature-row { grid-template-columns: 1fr; }
  .feature-row:nth-child(even) .feature-row__media { order: 0; }
}

/* store buttons */
.store-btn { display: inline-flex; align-items: center; gap: 10px; min-height: 52px; padding: 8px 20px 8px 16px; border-radius: 14px; background: var(--ink); color: #fff; transition: background-color .2s; }
.store-btn:hover { background: #000; }
.store-btn svg { width: 24px; height: 24px; flex: 0 0 auto; }
.store-btn small { display: block; font-size: 11px; opacity: .75; line-height: 1.1; }
.store-btn strong { display: block; font-size: 17px; line-height: 1.2; font-weight: 600; }
.store-btn--outline { background: transparent; color: var(--ink); box-shadow: inset 0 0 0 1px var(--ink); }
.store-btn--outline:hover { background: var(--ink); color: #fff; }
.bg-dark .store-btn { background: #fff; color: var(--ink); }

/* ==========================================================================
   About
   ========================================================================== */
.about-hero { position: relative; color: #fff; min-height: calc(100svh - var(--nav-h)); max-height: 980px; display: flex; align-items: center; justify-content: center; text-align: center; overflow: hidden; }
.about-hero img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.about-hero::before { content: ""; position: absolute; inset: 0; z-index: 1; background: radial-gradient(ellipse at 50% 40%, rgba(0,0,0,.05), rgba(0,0,0,.45)); }
.about-hero__copy { position: relative; z-index: 2; padding: 0 var(--gutter); }
.about-hero .lead { color: rgba(255,255,255,.88); margin-top: 18px; }
.prose { font-size: clamp(19px, 2vw, 24px); line-height: 1.85; color: var(--ink-2); }
.prose p + p { margin-top: 1.1em; }
.prose strong { color: var(--ink); font-weight: 600; }
.bg-dark .prose { color: var(--on-dark-2); }
.bg-dark .prose strong { color: var(--on-dark); }
.stat-row { display: flex; justify-content: center; gap: clamp(32px, 8vw, 120px); margin: clamp(40px, 6vw, 72px) 0; flex-wrap: wrap; }
.stat-row div { text-align: center; }
.stat-row strong { display: block; font-size: clamp(48px, 7vw, 96px); font-weight: 700; line-height: 1; letter-spacing: -0.02em; color: var(--blue); }
.stat-row span { color: var(--ink-2); font-size: 15px; }
.trio { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.trio__item { background: var(--bg-alt); border-radius: var(--radius-lg); padding: clamp(28px, 3vw, 40px); }
.bg-alt .trio__item { background: #fff; }
.bg-dark .trio__item { background: var(--dark-2); }
.trio__num { font-size: 14px; font-weight: 700; color: var(--blue); margin-bottom: 18px; letter-spacing: .1em; }
.bg-dark .trio__num { color: var(--blue-on-dark); }
.trio__item h3 { font-size: 22px; margin-bottom: 10px; }
.trio__item p { color: var(--ink-2); font-size: 16px; }
.bg-dark .trio__item p { color: var(--on-dark-2); }
@media (max-width: 833px) { .trio { grid-template-columns: 1fr; } }
.values { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.values div { border-top: 2px solid var(--ink); padding-top: 18px; }
.values strong { font-size: 24px; display: block; margin-bottom: 6px; }
.values span { color: var(--ink-2); font-size: 15px; }
@media (max-width: 833px) { .values { grid-template-columns: 1fr 1fr; } }
.mosaic { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px; }
.mosaic img { width: 100%; height: 100%; object-fit: cover; border-radius: var(--radius); aspect-ratio: 3 / 4; }
.mosaic img.wide { grid-column: span 2; aspect-ratio: auto; }
@media (max-width: 734px) { .mosaic { grid-template-columns: 1fr 1fr; } .mosaic img.wide { grid-column: 1 / -1; aspect-ratio: 3 / 2; } }

/* ==========================================================================
   Support
   ========================================================================== */
.support-hero { padding: clamp(56px, 8vw, 110px) 0 clamp(40px, 5vw, 64px); text-align: center; }
.quick { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.quick a { background: var(--bg-alt); border-radius: var(--radius); padding: 26px 22px; display: flex; flex-direction: column; gap: 12px; transition: background-color .2s, transform .2s; }
.quick a:hover { background: #ebebf0; transform: translateY(-2px); }
.quick .ico { width: 40px; height: 40px; color: var(--blue); }
.quick strong { font-size: 18px; }
.quick span { font-size: 14px; color: var(--ink-2); }
@media (max-width: 833px) { .quick { grid-template-columns: 1fr 1fr; } }
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; counter-reset: step; }
.steps li { background: #fff; border-radius: var(--radius); padding: 24px; counter-increment: step; }
.steps li::before { content: counter(step, decimal-leading-zero); display: block; font-size: 14px; font-weight: 700; color: var(--blue); margin-bottom: 12px; letter-spacing: .08em; }
.steps strong { display: block; font-size: 18px; margin-bottom: 6px; }
.steps span { font-size: 15px; color: var(--ink-2); }
@media (max-width: 833px) { .steps { grid-template-columns: 1fr 1fr; } }
.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { list-style: none; cursor: pointer; padding: 22px 44px 22px 0; font-size: 18px; font-weight: 600; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: ""; position: absolute; right: 6px; top: 50%; width: 10px; height: 10px; border-right: 2px solid var(--ink-2); border-bottom: 2px solid var(--ink-2); transform: translateY(-70%) rotate(45deg); transition: transform .25s var(--ease); }
.faq details[open] summary::after { transform: translateY(-30%) rotate(-135deg); }
.faq .faq__a { padding: 0 0 24px; color: var(--ink-2); max-width: 46em; }
.faq .faq__a p + p, .faq .faq__a p + ul, .faq .faq__a ul + p { margin-top: 8px; }
.faq .faq__a ul { list-style: disc; padding-left: 1.3em; }
.faq-group + .faq-group { margin-top: 56px; }
.faq-group h3 { font-size: 22px; margin-bottom: 14px; }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }
.contact-card { background: #fff; border-radius: var(--radius); padding: 28px; }
.contact-card h3 { font-size: 19px; margin-bottom: 8px; }
.contact-card p { color: var(--ink-2); font-size: 15px; margin-bottom: 14px; }
.contact-card .qr { width: 120px; }
@media (max-width: 833px) { .contact-grid { grid-template-columns: 1fr; } }

/* generic utilities */
.mt-0 { margin-top: 0 !important; } .mt-s { margin-top: 16px; } .mt-m { margin-top: 32px; } .mt-l { margin-top: 56px; }
.mb-s { margin-bottom: 16px; } .mb-m { margin-bottom: 32px; }
.rounded { border-radius: var(--radius-lg); }
.max-760 { max-width: 760px; margin-left: auto; margin-right: auto; }

/* ---------- 细节调整 ---------- */
.split__copy .headline { font-size: clamp(30px, 4.2vw, 54px); }
.about-hero__copy { text-shadow: 0 2px 24px rgba(0, 0, 20, .45); }
.about-hero::before { background: radial-gradient(ellipse at 50% 45%, rgba(0,0,20,.28), rgba(0,0,0,.5)); }
.stat-row { gap: clamp(28px, 6vw, 88px); }
.stat-row strong { font-size: clamp(40px, 5.6vw, 76px); white-space: nowrap; }

/* 首屏内容：页面打开即入场，不依赖滚动检测 */
@keyframes enter { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: none; } }
@keyframes enter-scale { from { opacity: 0; transform: scale(.94); } to { opacity: 1; transform: none; } }
.js :is(.hero-home, .p-hero, .about-hero, .support-hero, .app-hero) .reveal { opacity: 1; transform: none; transition: none; animation: enter .9s var(--ease) both; }
.js .p-hero .reveal-scale { opacity: 1; transform: none; transition: none; animation: enter-scale 1.2s var(--ease) .15s both; }
.js :is(.hero-home, .p-hero, .about-hero, .support-hero, .app-hero) .reveal-d1 { animation-delay: .08s; }
.js :is(.hero-home, .p-hero, .about-hero, .support-hero, .app-hero) .reveal-d2 { animation-delay: .16s; }
.js :is(.hero-home, .p-hero, .about-hero, .support-hero, .app-hero) .reveal-d3 { animation-delay: .24s; }
@media (prefers-reduced-motion: reduce) { .js :is(.hero-home, .p-hero, .about-hero, .support-hero, .app-hero) :is(.reveal, .reveal-scale) { animation: none; } }
@media (max-width: 520px) { .steps { grid-template-columns: 1fr; } .quick a { padding: 20px 16px; } }

/* ---------- 购买下拉菜单（京东 / 天猫） ---------- */
.buy { position: relative; display: inline-block; }
.buy > summary { list-style: none; cursor: pointer; user-select: none; }
.buy > summary::-webkit-details-marker { display: none; }
.buy > summary::after { content: ""; width: 6px; height: 6px; border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor; transform: translateY(-2px) rotate(45deg); margin-left: 2px; transition: transform .2s var(--ease); }
.buy[open] > summary::after { transform: translateY(1px) rotate(-135deg); }
.buy__menu {
  position: absolute; top: calc(100% + 10px); left: 0; z-index: 120; min-width: 220px; padding: 8px;
  background: #fff; color: var(--ink); border-radius: 16px; text-align: left;
  box-shadow: 0 0 0 1px rgba(0,0,0,.06), 0 18px 50px rgba(0,0,0,.18);
  animation: menu-in .18s var(--ease);
}
@keyframes menu-in { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: none; } }
.buy__menu a { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 12px 14px; border-radius: 10px; font-size: 16px; }
.buy__menu a::after { content: "›"; color: var(--ink-3); font-size: 20px; line-height: 1; }
.buy__menu a:hover { background: var(--bg-alt); }
.buy__menu strong { font-weight: 600; }
.buy__menu span { font-size: 13px; color: var(--ink-3); margin-left: auto; }
.nav .buy__menu, .subnav .buy__menu { left: auto; right: 0; }
.btn-row--center .buy__menu, .center .buy__menu { left: 50%; transform: translateX(-50%); animation: none; }
@media (max-width: 734px) { .hero-home .buy__menu { left: 50%; transform: translateX(-50%); animation: none; } }

/* 配色说明 */
.tile-colors figure { width: 32%; text-align: center; }
.tile-colors figure:nth-child(2) { width: 36%; }
.tile-colors figure img { width: 100%; }
.tile-colors figcaption { font-size: 13px; color: var(--ink-2); margin-top: 6px; line-height: 1.4; }
.tile-colors figcaption em { display: block; font-style: normal; color: var(--ink-3); font-size: 12px; }
.badge-soon { display: inline-block; margin-left: 8px; padding: 2px 10px; border-radius: 99px; font-size: 12px; font-weight: 600; color: var(--blue); background: var(--blue-soft); vertical-align: middle; }

/* 戈壁挑战赛现场：自动滚动照片条 */
.marquee { overflow: hidden; -webkit-mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent); mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent); }
.marquee__track { display: flex; gap: 14px; width: max-content; }
.js .marquee__track { animation: marquee 60s linear infinite; }
.marquee:hover .marquee__track { animation-play-state: paused; }
.marquee figure { flex: 0 0 auto; height: clamp(260px, 32vw, 420px); border-radius: var(--radius); overflow: hidden; background: var(--dark-2); }
.marquee img { height: 100%; width: auto; max-width: none; object-fit: cover; }
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(calc(-50% - 7px)); } }
@media (prefers-reduced-motion: reduce) { .marquee { overflow-x: auto; } .js .marquee__track { animation: none; } }
.event-row { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 12px; }
.event-row img { width: 100%; height: clamp(260px, 30vw, 440px); object-fit: cover; border-radius: var(--radius); }
@media (max-width: 734px) { .event-row { grid-template-columns: 1fr 1fr; } .event-row > img:first-child, .event-row > .pic:first-child img { grid-column: 1 / -1; } }

/* ==========================================================================
   第三轮反馈调整（2026-10-14）
   ========================================================================== */

/* #2 首页 App 卡片：链接与手机图拉开距离 */
.tile .links { margin-bottom: 44px; }

/* #3 首页配色卡片：星野黑放大居上，另两色在下方 */
.tile-colors { flex-direction: column; align-items: center; gap: 22px; max-width: 720px; padding-bottom: 40px; }
.tile-colors figure { width: auto; }
.tile-colors .tile-colors__main { width: min(66%, 460px); }
.tile-colors .tile-colors__main figcaption { font-size: 15px; color: var(--ink); font-weight: 600; }
.tile-colors .tile-colors__main figcaption em { color: var(--blue); font-weight: 500; font-size: 13px; }
.tile-colors__soon { display: flex; justify-content: center; gap: 6%; width: 100%; }
.tile-colors__soon figure { width: 34%; }
.tile-colors figure:nth-child(2) { width: auto; }
.tile-colors__soon figure:nth-child(2) { width: 34%; }
@media (max-width: 833px) {
  .tile-colors .tile-colors__main { width: 78%; }
  .tile-colors__soon figure, .tile-colors__soon figure:nth-child(2) { width: 42%; }
}

/* #8 应用下载：苹果官方徽标 + 安卓按钮（高度一致） */
.stores { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.center .stores, .stores--center { justify-content: center; }
.store-badge { display: inline-block; line-height: 0; }
.store-badge img { height: 50px; width: auto; }
.store-android {
  display: inline-flex; align-items: center; gap: 9px; height: 50px; padding: 0 18px 0 14px;
  border-radius: 9px; background: #000; color: #fff; box-shadow: inset 0 0 0 1px #a6a6a6; line-height: 1.1;
  transition: opacity .2s;
}
.store-android:hover, .store-badge:hover { opacity: .85; }
.store-android svg { width: 28px; height: 28px; flex: 0 0 auto; }
.store-android small { display: block; font-size: 11px; opacity: .85; }
.store-android strong { display: block; font-size: 17px; font-weight: 600; letter-spacing: .01em; }
.footer__tm { font-size: 11px; color: var(--ink-3); margin-top: 14px; line-height: 1.6; }

/* #6 安卓下载二维码弹窗 */
.dl-modal { border: 0; border-radius: 24px; padding: 36px 32px 30px; width: min(360px, calc(100vw - 32px)); text-align: center; color: var(--ink); box-shadow: 0 30px 80px rgba(0,0,0,.3); }
.dl-modal::backdrop { background: rgba(0,0,0,.45); -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px); }
.dl-modal h3 { font-size: 21px; margin-bottom: 18px; }
.dl-modal img { width: 200px; height: 200px; margin: 0 auto 16px; border-radius: 12px; border: 1px solid var(--line); padding: 8px; }
.dl-modal p { font-size: 14px; color: var(--ink-2); line-height: 1.7; }
.dl-modal__close { position: absolute; top: 10px; right: 12px; width: 36px; height: 36px; border-radius: 50%; font-size: 24px; line-height: 1; color: var(--ink-2); }
.dl-modal__close:hover { background: var(--bg-alt); }
.dl-modal form { margin: 0; }

/* #9 产品页：全站导航不再重复「购买」，只保留产品子导航里的 */
.page-product .nav .buy { display: none; }

/* #10 携带场景：不同用法配图 + 说明 */
.gallery figure { position: relative; border-radius: var(--radius); overflow: hidden; }
.gallery figure img { aspect-ratio: 4 / 5; border-radius: 0; }
.gallery figcaption { position: absolute; left: 14px; bottom: 12px; color: #fff; font-size: 15px; font-weight: 600; text-shadow: 0 1px 10px rgba(0,0,0,.5); }
.gallery figure::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(0,0,0,0) 60%, rgba(0,0,0,.45)); pointer-events: none; }
.js .app-hero .reveal-scale { opacity: 1; transform: none; transition: none; animation: enter-scale 1.2s var(--ease) .2s both; }

/* 与 App 首页一致的线性图标：黑色线条 + 品牌蓝点缀，白底卡片 */
.mini-list .ico--app { background: #fff; color: var(--ink); box-shadow: 0 0 0 1px var(--line); border-radius: 11px; }
.mini-list .ico--app svg { width: 24px; height: 24px; }
.mini-list .ico--app .accent { stroke: var(--blue); }
.bg-dark .mini-list .ico--app { background: #fff; color: var(--ink); }

/* ---------- v1.2 实拍短片 ---------- */
.film { position: relative; overflow: hidden; width: 100%; height: min(56.25vw, 92vh); min-height: 480px; background: #000; color: #fff; }
.film__video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.film::after { content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(90deg, rgba(0,0,0,.5) 0%, rgba(0,0,0,.12) 45%, rgba(0,0,0,0) 70%), linear-gradient(0deg, rgba(0,0,0,.45) 0%, rgba(0,0,0,0) 45%); }
.film__copy { position: absolute; left: 0; right: 0; bottom: clamp(32px, 6vw, 80px); z-index: 2; }
.film .eyebrow { color: #9fb0ff; }
.film .lead { color: rgba(255,255,255,.88); max-width: 26em; margin-top: 14px; }
.film__toggle { position: absolute; right: var(--gutter); bottom: clamp(24px, 4vw, 40px); z-index: 3; width: 40px; height: 40px; border: 0; border-radius: 50%;
  display: grid; place-items: center; color: #fff; background: rgba(255,255,255,.18); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); cursor: pointer; transition: background .2s; }
.film__toggle:hover { background: rgba(255,255,255,.3); }
.film__toggle svg { width: 14px; height: 14px; }
.film__toggle .i-play, .film__toggle.is-paused .i-pause { display: none; }
.film__toggle.is-paused .i-play { display: block; }
@media (max-width: 734px) {
  .film { height: 125vw; min-height: 0; }
  .film::after { background: linear-gradient(0deg, rgba(0,0,0,.65) 0%, rgba(0,0,0,0) 55%); }
  .film__copy { bottom: 28px; padding-right: 72px; }
  .film__toggle { bottom: 28px; }
}

/* ---------- v1.2 三种颜色实拍 ---------- */
.colors__life { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: clamp(40px, 6vw, 72px); text-align: left; }
.colors__life figure { position: relative; overflow: hidden; border-radius: var(--radius); background: var(--bg-alt); }
.colors__life img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; }
.colors__life figure::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(0,0,0,0) 62%, rgba(0,0,0,.5)); pointer-events: none; }
.colors__life figcaption { position: absolute; left: 18px; bottom: 16px; z-index: 1; color: #fff; font-size: 17px; font-weight: 600; }
.colors__life figcaption em { font-style: normal; font-weight: 400; font-size: 14px; opacity: .85; margin-left: 8px; }
@media (max-width: 734px) {
  .colors__life { grid-template-columns: repeat(3, 76%); overflow-x: auto; scroll-snap-type: x mandatory; scrollbar-width: none;
    margin-left: calc(var(--gutter) * -1); margin-right: calc(var(--gutter) * -1); padding: 0 var(--gutter); scroll-padding: 0 var(--gutter); }
  .colors__life::-webkit-scrollbar { display: none; }
  .colors__life figure { scroll-snap-align: start; }
}

/* ---------- v1.2 微信等 App 内打开时的「在浏览器中打开」提示 ---------- */
.inapp-guide { position: fixed; inset: 0; z-index: 1000; display: flex; flex-direction: column; align-items: flex-end; padding: 6px 16px 24px;
  color: #fff; background: rgba(0,0,0,.86); -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px); overflow-y: auto; }
.inapp-guide[hidden] { display: none; }
.inapp-guide__arrow { flex: none; width: 84px; height: 102px; margin-right: 8px; }
.inapp-guide__box { align-self: stretch; max-width: 420px; margin: 4px auto 0; padding: 0 8px; }
.inapp-guide h3 { font-size: 26px; line-height: 1.3; font-weight: 700; }
.inapp-guide__why { margin-top: 6px; font-size: 15px; color: rgba(255,255,255,.65); }
.inapp-guide ol { list-style: none; margin: 24px 0 0; padding: 0; display: grid; gap: 16px; font-size: 18px; line-height: 1.5; }
.inapp-guide li { display: flex; gap: 12px; align-items: flex-start; }
.inapp-guide li > span { flex: 0 0 26px; height: 26px; margin-top: 1px; border-radius: 50%; display: grid; place-items: center; background: var(--blue); font-size: 14px; font-weight: 600; }
.inapp-guide small { display: block; margin-top: 4px; font-size: 14px; color: rgba(255,255,255,.6); }
.inapp-guide__dots { display: inline-block; padding: 0 8px; border-radius: 8px; background: rgba(255,255,255,.2); letter-spacing: 1px; }
.inapp-guide__alt { margin-top: 28px; padding-top: 18px; border-top: 1px solid rgba(255,255,255,.18); font-size: 15px; color: rgba(255,255,255,.75); }
.inapp-guide .btn { margin-top: 24px; width: 100%; }
html.guide-open { overflow: hidden; }

/* ---------- v2.0 多语言 ---------- */
/* 各语言优先用对应的系统字体 */
html:lang(zh-Hant) { --font: -apple-system, BlinkMacSystemFont, "PingFang TC", "Noto Sans TC", "Microsoft JhengHei", "Helvetica Neue", Arial, sans-serif; }
html:lang(ja) { --font: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic UI", "Yu Gothic", Meiryo, "Noto Sans JP", sans-serif; }
html:lang(en) { --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif; }
html:lang(ja) :is(.display, .headline, .title, .card__title, .bento__title) { word-break: auto-phrase; }

/* 导航里的语言菜单（地球图标） */
.lang { position: relative; display: inline-block; }
.lang > summary { list-style: none; cursor: pointer; width: 32px; height: 32px; display: grid; place-items: center; border-radius: 50%; opacity: .8; transition: opacity .2s, background-color .2s; }
.lang > summary::-webkit-details-marker { display: none; }
.lang > summary:hover, .lang[open] > summary { opacity: 1; background: rgba(128,128,128,.16); }
.lang > summary svg { width: 18px; height: 18px; }
.lang__menu { min-width: 168px; }
.lang__menu a::after { content: none; }
.lang__menu a[aria-current] { color: var(--blue); font-weight: 600; }
.lang__menu a[aria-current]::after { content: "✓"; color: var(--blue); font-size: 15px; }

/* 页脚里的语言切换 */
.footer__lang { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 18px; padding-top: 16px; }
.footer__lang svg { width: 15px; height: 15px; margin-right: -8px; }
.footer__lang a[aria-current] { color: var(--ink); font-weight: 600; }

/* 独立站上线前，海外版的购买按钮显示「即将开售」，不可点 */
.btn.btn-soon { background: transparent; color: inherit; border: 1px solid currentColor; opacity: .55; cursor: default; }
.btn.btn-soon:hover { background: transparent; color: inherit; }
.btn.btn-soon:active { transform: none; }

/* ---------- v2.1 图片压缩：AVIF ---------- */
/* 生成脚本给照片包了一层 <picture class="pic">，用来优先加载 AVIF；display: contents 让它不占位置，排版和原来的 <img> 完全一样 */
.pic { display: contents; }
.pic > source { display: none; }  /* <source> 只用来选图片，不能在网格里占一个格子 */

/* ---------- IE 兜底 ---------- */
/* IE 不支持本站用到的颜色变量、网格布局等写法，无法正常排版。这里只保证：顶部显示换浏览器的提示，
   文字和图片都能看到（IE 下不加 js 类，渐显动画不会把内容藏起来），弹窗和下拉菜单不乱跳出来。
   以下样式只用 IE 认识的写法，不要改成变量 */
.ie-tip { display: none; }
.ie .ie-tip { display: block; padding: 12px 20px; background: #021ee6; color: #ffffff; font-size: 14px; line-height: 1.6; text-align: center; }
.ie dialog, .ie .inapp-guide, .ie .buy__menu, .ie .lang__menu { display: none; }