:root {
  --ink: #07101f;
  --ink-2: #132235;
  --paper: #f5f7fb;
  --paper-2: #edf3fb;
  --muted: #708095;
  --line: rgba(12, 27, 48, 0.12);
  --night: #030815;
  --night-2: #071426;
  --blue: #1897ff;
  --cyan: #75e7ff;
  --violet: #7b61ff;
  --mint: #5bf0b5;
  --glass: rgba(255, 255, 255, 0.12);
  --shadow: 0 32px 90px rgba(2, 12, 26, 0.22);
  --radius-xl: 34px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --header-h: 72px;
  color-scheme: light dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }

.skip-link {
  position: fixed;
  left: 18px;
  top: 12px;
  z-index: 1000;
  padding: 10px 14px;
  border-radius: 999px;
  background: #fff;
  color: var(--ink);
  transform: translateY(-160%);
  transition: transform .2s ease;
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 0 clamp(18px, 4vw, 56px);
  color: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(18px);
  background: linear-gradient(180deg, rgba(3, 8, 21, .72), rgba(3, 8, 21, .18));
  border-bottom: 1px solid rgba(255, 255, 255, .08);
  transition: background .25s ease, color .25s ease, box-shadow .25s ease;
}
.site-header.is-scrolled {
  color: var(--ink);
  background: rgba(245, 247, 251, .78);
  border-color: rgba(7, 16, 31, .08);
  box-shadow: 0 12px 40px rgba(7, 16, 31, .08);
}
.brand { display: flex; align-items: center; gap: 12px; min-width: max-content; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 15px;
  overflow: hidden;
  background: #078cf8;
  box-shadow: 0 12px 30px rgba(24, 151, 255, .35);
}
.brand-mark img { width: 100%; height: 100%; object-fit: cover; }
.brand-copy { font-size: 13px; letter-spacing: .14em; opacity: .78; }
.site-nav { display: flex; align-items: center; gap: clamp(16px, 2.8vw, 34px); font-size: 14px; }
.site-nav a { opacity: .72; transition: opacity .2s ease, color .2s ease; }
.site-nav a:hover, .site-nav a.is-active { opacity: 1; color: var(--blue); }
.header-cta {
  padding: 10px 18px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .14);
  border: 1px solid rgba(255, 255, 255, .22);
  font-size: 14px;
}
.site-header.is-scrolled .header-cta { background: var(--ink); color: #fff; border-color: transparent; }

.site-header.is-scrolled.on-dark {
  color: rgba(255, 255, 255, 0.9);
  background: rgba(3, 8, 21, .76);
  border-color: rgba(255,255,255,.1);
  box-shadow: 0 16px 46px rgba(0,0,0,.24);
}
.site-header.is-scrolled.on-dark .header-cta {
  color: #fff;
  background: rgba(255,255,255,.14);
  border-color: rgba(255,255,255,.22);
}

.section-invert { background: var(--night); color: #fff; }
.section-light { background: var(--paper); color: var(--ink); }
.eyebrow {
  margin: 0 0 18px;
  color: var(--cyan);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .24em;
  text-transform: uppercase;
}
.eyebrow.dark { color: var(--blue); }
h1, h2, h3, p { margin-top: 0; }
h1, h2 {
  letter-spacing: -0.065em;
  line-height: .96;
}
h1 {
  margin-bottom: 26px;
  font-size: clamp(56px, 6.2vw, 90px);
  font-weight: 900;
}
h2 {
  margin-bottom: 24px;
  font-size: clamp(42px, 6vw, 88px);
  font-weight: 880;
}
h3 { margin-bottom: 12px; font-size: clamp(24px, 2.4vw, 34px); letter-spacing: -0.04em; }
p { color: inherit; line-height: 1.75; }

.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  grid-template-columns: minmax(0, .88fr) minmax(560px, 1.12fr);
  align-items: center;
  gap: clamp(28px, 4vw, 80px);
  padding: calc(var(--header-h) + 58px) clamp(18px, 5vw, 78px) 70px;
  overflow: hidden;
  isolation: isolate;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -3;
  background:
    radial-gradient(circle at 68% 15%, rgba(117,231,255,.28), transparent 32%),
    radial-gradient(circle at 20% 72%, rgba(123,97,255,.22), transparent 38%),
    linear-gradient(135deg, #020611 0%, #07172a 52%, #030815 100%);
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(rgba(255,255,255,.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.055) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to bottom, transparent, #000 18%, #000 74%, transparent);
}
.hero-orbit {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.hero-orbit span {
  position: absolute;
  z-index: -1;
  border: 1px solid rgba(117,231,255,.13);
  border-radius: 50%;
  transform: rotate(-12deg);
}
.hero-orbit span:nth-child(1) { width: 78vw; height: 28vw; right: -18vw; top: 22vh; }
.hero-orbit span:nth-child(2) { width: 64vw; height: 22vw; right: -9vw; top: 28vh; border-color: rgba(123,97,255,.16); }
.hero-orbit span:nth-child(3) { width: 52vw; height: 18vw; right: 2vw; top: 34vh; border-color: rgba(91,240,181,.12); }
.hero-content { position: relative; z-index: 2; max-width: 650px; }
.hero-lead { max-width: 600px; margin-bottom: 34px; color: rgba(255,255,255,.72); font-size: clamp(17px, 1.55vw, 22px); }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 24px;
  border-radius: 999px;
  font-weight: 800;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { color: #001426; background: linear-gradient(135deg, #fff, #aeefff); box-shadow: 0 18px 42px rgba(117,231,255,.28); }
.btn-ghost { border: 1px solid rgba(255,255,255,.2); color: rgba(255,255,255,.9); background: rgba(255,255,255,.08); }
.hero-wechat-card {
  position: relative;
  flex: 1 1 390px;
  align-self: center;
  max-width: 460px;
  display: grid;
  grid-template-columns: 108px minmax(0, 1fr);
  align-items: center;
  gap: 16px;
  min-height: 126px;
  padding: 10px 18px 10px 10px;
  appearance: none;
  color: inherit;
  text-align: left;
  cursor: zoom-in;
  border: 1px solid rgba(117,231,255,.34);
  border-radius: 30px;
  background:
    radial-gradient(circle at 18% 22%, rgba(117,231,255,.28), transparent 36%),
    linear-gradient(135deg, rgba(255,255,255,.18), rgba(255,255,255,.07));
  box-shadow: 0 22px 58px rgba(0,0,0,.26), inset 0 1px 0 rgba(255,255,255,.16);
  backdrop-filter: blur(18px);
  overflow: hidden;
  transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease, background .2s ease;
}
.hero-wechat-card:hover {
  transform: translateY(-2px);
  border-color: rgba(117,231,255,.72);
  box-shadow: 0 26px 68px rgba(0,0,0,.3), 0 0 0 1px rgba(117,231,255,.16), inset 0 1px 0 rgba(255,255,255,.18);
}
.hero-wechat-card:focus-visible {
  outline: 3px solid rgba(117,231,255,.8);
  outline-offset: 4px;
}
.hero-wechat-card img {
  width: 108px;
  height: 108px;
  aspect-ratio: 1;
  object-fit: contain;
  border-radius: 22px;
  background: #141414;
  box-shadow: 0 0 0 1px rgba(255,255,255,.16), 0 14px 34px rgba(0,0,0,.28);
}
.hero-wechat-card span {
  display: block;
  margin-bottom: 4px;
  color: var(--cyan);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: .22em;
}
.hero-wechat-card strong {
  display: block;
  margin-bottom: 4px;
  color: #fff;
  font-size: 18px;
  line-height: 1.22;
  letter-spacing: -0.03em;
}
.hero-wechat-card em {
  display: block;
  color: rgba(255,255,255,.62);
  font-size: 12px;
  font-style: normal;
  line-height: 1.45;
}

.hero-stage {
  position: relative;
  min-height: 600px;
  display: grid;
  place-items: center;
  perspective: 1200px;
}
.cabin-device, .wide-device {
  position: relative;
  margin: 0;
  border-radius: 34px;
  background: linear-gradient(180deg, rgba(255,255,255,.2), rgba(255,255,255,.04));
  padding: 12px;
  box-shadow: 0 42px 120px rgba(0,0,0,.48), inset 0 0 0 1px rgba(255,255,255,.16);
}
.cabin-device {
  position: absolute;
  left: 50%;
  top: 50%;
  width: min(100%, 860px);
  transform: translate(-50%, -50%) rotateX(5deg) rotateY(-4deg) rotateZ(.2deg);
  transition: opacity .65s ease, transform .65s ease, filter .65s ease;
}
.device-topbar {
  position: absolute;
  left: 30px;
  top: 24px;
  z-index: 2;
  display: flex;
  gap: 6px;
}
.device-topbar span { width: 7px; height: 7px; border-radius: 50%; background: rgba(255,255,255,.55); }
.cabin-device img, .cabin-device video, .wide-device img {
  width: 100%;
  height: auto;
  border-radius: 24px;
  object-fit: cover;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.14);
}
.cabin-device video { aspect-ratio: 16 / 9; background: #020611; }
.phone-device {
  position: relative;
  margin: 0;
  overflow: hidden;
  border-radius: 42px;
  background: #0b111c;
  padding: 10px;
  box-shadow: 0 34px 78px rgba(0,0,0,.25), inset 0 0 0 1px rgba(255,255,255,.13);
}
.phone-device img { width: 100%; height: 100%; border-radius: 33px; object-fit: cover; }
.hero-phone-stack {
  position: absolute;
  right: -4%;
  top: 50%;
  width: min(64%, 640px);
  height: 500px;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-50%) translateX(42px);
  transition: opacity .65s ease, transform .65s ease, filter .65s ease;
}
.phone-shot-card {
  position: absolute;
  margin: 0;
  width: 170px;
  overflow: hidden;
  border-radius: 28px;
  padding: 0;
  background: transparent;
  box-shadow: 0 30px 70px rgba(0,0,0,.34);
  opacity: .92;
  transition: transform .75s cubic-bezier(.2, .72, .18, 1), opacity .65s ease;
}
.phone-shot-card img {
  width: 100%;
  height: auto;
  object-fit: cover;
  object-position: center top;
  border-radius: 24px;
  transform: none;
}
.shot-home { right: 5%; top: 12px; z-index: 4; transform: translateX(44px) rotate(4deg); }
.shot-trip { left: 6%; top: 74px; z-index: 2; transform: translateX(44px) rotate(-8deg) scale(.9); }
.shot-charge { left: 34%; top: 118px; z-index: 3; transform: translateX(44px) rotate(7deg) scale(.86); }
.shot-stats { right: 0; bottom: 20px; z-index: 1; transform: translateX(44px) rotate(-3deg) scale(.8); opacity: .76; }
.phone-left { display: none; }
.phone-right { display: none; }
.hero-stage.show-phone .hero-cabin {
  opacity: 0;
  filter: blur(8px);
  transform: translate(-50%, -50%) scale(.96) rotateX(5deg) rotateY(-4deg);
}
.hero-stage.show-phone .hero-phone-stack {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(-50%) translateX(0);
}
.hero-stage.show-phone .phone-shot-card {
  opacity: .96;
  transform: translateX(0) rotate(var(--shot-rotate, 0deg)) scale(var(--shot-scale, 1));
}
.hero-stage.show-phone .shot-home { --shot-rotate: 3deg; --shot-scale: 1; transition-delay: .04s; }
.hero-stage.show-phone .shot-trip { --shot-rotate: -8deg; --shot-scale: .9; transition-delay: .12s; }
.hero-stage.show-phone .shot-charge { --shot-rotate: 8deg; --shot-scale: .86; transition-delay: .2s; }
.hero-stage.show-phone .shot-stats { --shot-rotate: -2deg; --shot-scale: .78; opacity: .78; transition-delay: .28s; }
.signal-card {
  position: absolute;
  z-index: 4;
  padding: 14px 16px;
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 18px;
  background: rgba(4, 12, 25, .7);
  backdrop-filter: blur(18px);
  box-shadow: 0 24px 50px rgba(0,0,0,.24);
}
.signal-card span { display: block; margin-bottom: 3px; color: rgba(255,255,255,.54); font-size: 12px; }
.signal-card strong { font-size: 16px; }
.signal-left { display: none; }
.signal-right { right: 3%; bottom: 12%; opacity: 0; transform: translateY(12px); transition: opacity .55s ease, transform .55s ease; }
.hero-stage.show-phone .signal-right { opacity: 1; transform: translateY(0); }
.hero-metrics {
  position: absolute;
  left: clamp(18px, 5vw, 78px);
  right: clamp(18px, 5vw, 78px);
  bottom: 28px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  max-width: 760px;
  border-radius: 22px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.06);
  backdrop-filter: blur(18px);
}
.hero-metrics div { padding: 18px 22px; background: rgba(255,255,255,.045); }
.hero-metrics strong { display: block; margin-bottom: 4px; font-size: 30px; letter-spacing: -0.04em; }
.hero-metrics span { color: rgba(255,255,255,.58); font-size: 13px; }

.overview { padding: 120px clamp(18px, 5vw, 78px); }
.section-copy { max-width: 700px; }
.section-copy.narrow { max-width: 930px; margin-inline: auto; text-align: center; }
.section-copy p { color: var(--muted); font-size: 18px; }
.triad-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-top: 52px;
}
.triad-card {
  min-height: 310px;
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: linear-gradient(180deg, #fff, #eef5ff);
  box-shadow: 0 24px 70px rgba(7, 16, 31, .08);
}
.triad-card.accent { color: #fff; background: linear-gradient(145deg, #07101f, #123153 48%, #126ee6); }
.triad-card p { color: var(--muted); }
.triad-card.accent p { color: rgba(255,255,255,.68); }
.triad-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 60px;
  height: 42px;
  margin-bottom: 72px;
  padding: 0 16px;
  border-radius: 999px;
  background: rgba(24,151,255,.1);
  color: var(--blue);
  font-size: 13px;
  font-weight: 900;
}
.accent .triad-icon { background: rgba(255,255,255,.16); color: #fff; }

.desktop {
  display: grid;
  grid-template-columns: minmax(320px, .82fr) minmax(0, 1.18fr);
  gap: clamp(28px, 5vw, 80px);
  align-items: center;
  min-height: 100svh;
  padding: 120px clamp(18px, 5vw, 78px);
  background:
    radial-gradient(circle at 70% 20%, rgba(24,151,255,.24), transparent 34%),
    linear-gradient(135deg, #030815 0%, #06101f 100%);
}
.desktop-copy p { max-width: 560px; color: rgba(255,255,255,.7); font-size: 18px; }
.feature-list { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; }
.feature-list span {
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.13);
  background: rgba(255,255,255,.07);
  color: rgba(255,255,255,.8);
  font-size: 13px;
}
.desktop-showcase { min-width: 0; }
.wide-device { margin: 0; }
.wide-device figcaption {
  position: absolute;
  left: 26px;
  bottom: 22px;
  padding: 10px 14px;
  border-radius: 999px;
  color: rgba(255,255,255,.86);
  background: rgba(0,0,0,.36);
  backdrop-filter: blur(12px);
  font-size: 13px;
}
.screen-selector {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 18px;
}
.screen-selector button {
  cursor: pointer;
  padding: 8px;
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 18px;
  background: rgba(255,255,255,.06);
  color: rgba(255,255,255,.66);
  text-align: left;
  transition: transform .2s ease, border-color .2s ease, color .2s ease, background .2s ease;
}
.screen-selector button:hover, .screen-selector button.is-active { transform: translateY(-2px); color: #fff; border-color: rgba(117,231,255,.7); background: rgba(117,231,255,.12); }
.screen-selector img { width: 100%; border-radius: 12px; margin-bottom: 8px; aspect-ratio: 16 / 9; object-fit: cover; }
.screen-selector span { display: block; padding: 0 4px 2px; font-size: 13px; font-weight: 800; }

.entertainment {
  position: relative;
  min-height: 178svh;
  padding: 0;
  overflow: clip;
  background:
    radial-gradient(circle at 50% 18%, rgba(24,151,255,.24), transparent 36%),
    linear-gradient(180deg, #030815 0%, #09111d 46%, #040914 100%);
}
.entertainment .section-copy p { color: rgba(255,255,255,.62); }
.entertainment-hero {
  --effect-height: 92svh;
  --effect-radius: 0px;
  --effect-title-opacity: 1;
  --effect-card-y: 122px;
  position: sticky;
  top: 0;
  min-height: 100svh;
  display: grid;
  align-content: start;
  padding: calc(var(--header-h) + 18px) clamp(18px, 5vw, 78px) 46px;
}
.entertainment .section-copy {
  position: relative;
  z-index: 5;
  margin-top: clamp(36px, 7svh, 82px);
  margin-bottom: 0;
  opacity: var(--effect-title-opacity);
  pointer-events: none;
  text-shadow: 0 18px 54px rgba(0,0,0,.58);
}
.entertainment .section-copy h2 { margin-bottom: 0; }
.entertainment .section-copy .eyebrow { color: rgba(210,236,255,.72); }
.entertainment-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(3,8,21,.74), transparent 28%, transparent 68%, rgba(3,8,21,.72)),
    radial-gradient(circle at 50% 38%, transparent 0, rgba(3,8,21,.18) 72%);
}
.entertainment-panel {
  min-width: 0;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 36px;
  overflow: hidden;
  background: rgba(255,255,255,.06);
  box-shadow: 0 44px 120px rgba(0,0,0,.38);
}
.effect-panel {
  position: relative;
  z-index: 3;
  width: min(calc(100vw - 32px), 1260px);
  margin: var(--effect-card-y) auto 0;
  border-radius: var(--effect-radius);
  transform-origin: center center;
  will-change: height, border-radius, margin;
}
.entertainment-panel video,
.entertainment-panel img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: #020611;
}
.effect-panel video {
  height: var(--effect-height);
  aspect-ratio: auto;
}
.entertainment-panel div { padding: 28px; }
.effect-panel div {
  position: absolute;
  z-index: 4;
  left: clamp(18px, 3vw, 38px);
  right: clamp(18px, 3vw, 38px);
  bottom: clamp(18px, 3vw, 34px);
  max-width: 520px;
  border-radius: 24px;
  background: rgba(3, 8, 21, .62);
  border: 1px solid rgba(255,255,255,.14);
  backdrop-filter: blur(16px);
}
.entertainment-panel h3 { color: #fff; }
.entertainment-panel p { color: rgba(255,255,255,.66); font-size: 17px; }

.lyrics-show {
  min-height: 100svh;
  display: grid;
  align-items: center;
  grid-template-columns: minmax(320px, .58fr) minmax(0, 1fr);
  gap: clamp(28px, 5vw, 76px);
  padding: 120px clamp(18px, 5vw, 78px);
  background:
    radial-gradient(circle at 84% 32%, rgba(123,97,255,.26), transparent 34%),
    linear-gradient(180deg, #040914 0%, #071426 100%);
}
.lyrics-copy p { color: rgba(255,255,255,.64); font-size: 18px; }
.lyrics-device {
  margin: 0;
  overflow: hidden;
  border-radius: 36px;
  padding: 12px;
  background: linear-gradient(180deg, rgba(255,255,255,.18), rgba(255,255,255,.05));
  box-shadow: 0 44px 120px rgba(0,0,0,.38), inset 0 0 0 1px rgba(255,255,255,.14);
}
.lyrics-device img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  border-radius: 25px;
  object-fit: cover;
}

.assistant { padding: 130px clamp(18px, 5vw, 78px); overflow: hidden; }
.assistant-grid {
  display: grid;
  grid-template-columns: minmax(480px, 1fr) minmax(320px, .82fr);
  align-items: center;
  gap: clamp(34px, 7vw, 110px);
}
.phone-gallery {
  position: relative;
  min-height: 650px;
  display: grid;
  place-items: center;
}
.phone-gallery::before {
  content: "";
  position: absolute;
  width: 72%;
  height: 72%;
  border-radius: 45%;
  background: radial-gradient(circle, rgba(117,231,255,.52), rgba(24,151,255,.16) 45%, transparent 70%);
  filter: blur(8px);
}
.phone-gallery .phone-device { position: absolute; width: 260px; height: 565px; }
.phone-gallery .phone-device {
  transition: opacity .55s ease, transform .65s cubic-bezier(.2,.72,.18,1), filter .55s ease, z-index .55s ease;
}
.phone-gallery .phone-device.is-active { z-index: 4; opacity: 1; filter: none; transform: translateX(-28px) translateY(-10px) scale(1) rotate(-3deg); }
.phone-gallery .phone-device.is-next { z-index: 3; opacity: .72; filter: saturate(.86) blur(.2px); transform: translateX(112px) translateY(4px) scale(.92) rotate(7deg); }
.phone-gallery .phone-device.is-prev { z-index: 2; opacity: .42; filter: saturate(.78) blur(1px); transform: translateX(-138px) translateY(34px) scale(.86) rotate(-9deg); }
.tilt-a, .tilt-b, .tilt-c { transform: none; }
.assistant-points { display: grid; gap: 12px; margin-top: 30px; }
.assistant-points article {
  display: grid;
  grid-template-columns: 118px 1fr;
  gap: 16px;
  align-items: start;
  padding: 18px;
  border-radius: 22px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: 0 18px 50px rgba(7, 16, 31, .06);
}
.assistant-points strong { color: var(--ink); }
.assistant-points span { color: var(--muted); line-height: 1.6; }

.scenes {
  padding: 120px clamp(18px, 5vw, 78px);
  background:
    radial-gradient(circle at 16% 14%, rgba(123,97,255,.23), transparent 30%),
    radial-gradient(circle at 86% 56%, rgba(24,151,255,.2), transparent 36%),
    #040914;
}
.scenes .section-copy p { color: rgba(255,255,255,.62); }
.scene-rail { display: grid; gap: 28px; margin-top: 62px; }
.scene-card {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(310px, .75fr);
  gap: clamp(24px, 5vw, 72px);
  align-items: center;
  padding: clamp(16px, 2.6vw, 28px);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 38px;
  background: linear-gradient(135deg, rgba(255,255,255,.11), rgba(255,255,255,.04));
  box-shadow: 0 30px 90px rgba(0,0,0,.28);
}
.scene-card.reverse { grid-template-columns: minmax(310px, .75fr) minmax(0, 1.05fr); }
.scene-card.reverse .scene-media { order: 2; }
.scene-media {
  overflow: hidden;
  border-radius: 28px;
  background: rgba(255,255,255,.08);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.12);
}
.scene-media img { width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; }
.app-board img { aspect-ratio: 1.38 / 1; }
.scene-kicker { display: block; margin-bottom: 10px; color: var(--cyan); font-size: 12px; font-weight: 900; letter-spacing: .22em; text-transform: uppercase; }
.scene-card h3 { color: #fff; }
.scene-card p { color: rgba(255,255,255,.66); font-size: 17px; }

.download { padding: 120px clamp(18px, 5vw, 78px); }
.download-shell {
  display: grid;
  grid-template-columns: minmax(320px, .72fr) minmax(0, 1fr);
  gap: clamp(28px, 5vw, 70px);
  align-items: center;
  padding: clamp(28px, 5vw, 64px);
  border-radius: 42px;
  background:
    radial-gradient(circle at 84% 20%, rgba(117,231,255,.35), transparent 34%),
    linear-gradient(135deg, #fff, #ecf5ff);
  border: 1px solid rgba(24,151,255,.16);
  box-shadow: 0 34px 100px rgba(24, 151, 255, .15);
}
.download-copy p { color: var(--muted); font-size: 18px; }
.wechat-download-note {
  display: none;
  margin-top: 18px;
  padding: 14px 16px;
  border-radius: 18px;
  color: #0a3b68;
  background: rgba(24,151,255,.1);
  border: 1px solid rgba(24,151,255,.22);
  font-size: 15px !important;
  line-height: 1.65;
}
body.is-wechat .wechat-download-note { display: block; }
.download-stack { display: grid; gap: 14px; }
.download-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.download-card {
  position: relative;
  min-height: 210px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 24px;
  border-radius: 28px;
  background: rgba(255,255,255,.74);
  border: 1px solid rgba(7,16,31,.08);
  overflow: hidden;
  transition: transform .2s ease, box-shadow .2s ease;
}
.download-card::after {
  content: "↗";
  position: absolute;
  right: 20px;
  top: 18px;
  color: rgba(7,16,31,.28);
  font-size: 20px;
}
.download-card:hover { transform: translateY(-5px); box-shadow: 0 24px 60px rgba(7,16,31,.12); }
.download-card.primary { color: #fff; background: linear-gradient(145deg, #07101f, #0e5ed7 62%, #2acbff); }
.download-platform {
  width: fit-content;
  padding: 8px 12px;
  border-radius: 999px;
  color: var(--blue);
  background: rgba(24,151,255,.1);
  font-size: 12px;
  font-weight: 900;
}
.primary .download-platform { color: #fff; background: rgba(255,255,255,.16); }
.download-card strong { font-size: 22px; letter-spacing: -0.04em; }
.download-card em { color: var(--muted); font-style: normal; font-weight: 800; }
.primary em { color: rgba(255,255,255,.74); }
.download-wechat-card {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 168px;
  align-items: center;
  gap: 22px;
  min-height: 230px;
  padding: 24px;
  overflow: hidden;
  color: #fff;
  border: 1px solid rgba(117,231,255,.24);
  border-radius: 28px;
  background:
    linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px),
    linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
    radial-gradient(circle at 84% 18%, rgba(117,231,255,.35), transparent 34%),
    linear-gradient(145deg, #07101f 0%, #0b2a4d 52%, #0d87ca 100%);
  background-size: 34px 34px, 34px 34px, auto, auto;
  box-shadow: 0 28px 70px rgba(7,16,31,.16);
}
.download-wechat-card::after {
  content: "";
  position: absolute;
  inset: 14px;
  border-radius: 22px;
  border: 1px solid rgba(117,231,255,.14);
  pointer-events: none;
}
.download-wechat-card > * { position: relative; z-index: 1; }
.download-wechat-badge {
  display: inline-flex;
  width: fit-content;
  margin-bottom: 16px;
  padding: 8px 12px;
  border-radius: 999px;
  color: #001426;
  background: linear-gradient(135deg, #fff, #aeefff);
  font-size: 12px;
  font-weight: 950;
  letter-spacing: .16em;
}
.download-wechat-card h3 {
  margin-bottom: 10px;
  color: #fff;
  font-size: clamp(26px, 3vw, 38px);
}
.download-wechat-card p {
  margin: 0;
  max-width: 520px;
  color: rgba(255,255,255,.68);
  font-size: 15px;
  line-height: 1.7;
}
.download-wechat-card img {
  width: 168px;
  height: 168px;
  aspect-ratio: 1;
  object-fit: contain;
  justify-self: end;
  border-radius: 28px;
  background: #151515;
  box-shadow: 0 0 0 9px rgba(255,255,255,.08), 0 20px 54px rgba(0,0,0,.28);
  transition: transform .22s ease, box-shadow .22s ease;
}
.download-wechat-zoom {
  position: relative;
  display: grid;
  place-items: center;
  justify-self: end;
  width: 168px;
  padding: 0;
  border: 0;
  color: #fff;
  background: transparent;
  cursor: zoom-in;
}
.download-wechat-zoom span {
  position: absolute;
  left: 50%;
  bottom: 10px;
  transform: translateX(-50%);
  white-space: nowrap;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(3,8,21,.7);
  border: 1px solid rgba(255,255,255,.18);
  color: rgba(255,255,255,.86);
  font-size: 12px;
  font-weight: 900;
  backdrop-filter: blur(12px);
}
.download-wechat-zoom:hover img,
.download-wechat-zoom:focus-visible img {
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 0 0 9px rgba(255,255,255,.12), 0 26px 64px rgba(0,0,0,.34);
}
.download-wechat-zoom:focus-visible {
  outline: 3px solid rgba(117,231,255,.8);
  outline-offset: 8px;
  border-radius: 30px;
}

body.modal-open { overflow: hidden; }

.qr-modal {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100dvh;
  max-width: none;
  max-height: none;
  padding: 18px;
  border: 0;
  color: #fff;
  background: transparent;
}
.qr-modal[open] {
  display: grid;
  place-items: center;
}
.qr-modal::backdrop {
  background:
    radial-gradient(circle at 50% 34%, rgba(24,151,255,.28), transparent 36%),
    rgba(1, 6, 16, .82);
  backdrop-filter: blur(18px);
}
.qr-modal-panel {
  position: relative;
  width: min(92vw, 620px);
  max-height: calc(100dvh - 36px);
  display: grid;
  justify-items: center;
  padding: clamp(22px, 4vw, 34px);
  overflow: auto;
  border: 1px solid rgba(117,231,255,.24);
  border-radius: 38px;
  background:
    linear-gradient(90deg, rgba(255,255,255,.055) 1px, transparent 1px),
    linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
    radial-gradient(circle at 72% 8%, rgba(117,231,255,.28), transparent 34%),
    linear-gradient(145deg, rgba(7,16,31,.98), rgba(6,24,44,.96) 58%, rgba(3,8,21,.98));
  background-size: 32px 32px, 32px 32px, auto, auto;
  box-shadow: 0 42px 120px rgba(0,0,0,.5), inset 0 1px 0 rgba(255,255,255,.12);
  animation: qrModalIn .24s cubic-bezier(.2,.72,.18,1);
}
.qr-modal-close {
  position: absolute;
  right: 18px;
  top: 18px;
  min-height: 38px;
  padding: 0 13px;
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 999px;
  color: rgba(255,255,255,.86);
  background: rgba(255,255,255,.08);
  cursor: pointer;
}
.qr-modal-close:hover { background: rgba(255,255,255,.14); }
.qr-modal-kicker {
  display: inline-flex;
  margin-bottom: 12px;
  padding: 8px 12px;
  border-radius: 999px;
  color: #001426;
  background: linear-gradient(135deg, #fff, #aeefff);
  font-size: 12px;
  font-weight: 950;
  letter-spacing: .18em;
}
.qr-modal h2 {
  margin-bottom: 10px;
  padding-inline: 36px;
  text-align: center;
  font-size: clamp(30px, 5vw, 48px);
}
.qr-modal p {
  max-width: 440px;
  margin: 0 0 22px;
  color: rgba(255,255,255,.68);
  text-align: center;
  font-size: 15px;
}
.qr-modal-panel > img {
  width: min(78vw, 430px);
  max-height: min(58dvh, 520px);
  object-fit: contain;
  border-radius: 34px;
  background: #151515;
  box-shadow: 0 0 0 10px rgba(255,255,255,.08), 0 26px 74px rgba(0,0,0,.34);
}
@keyframes qrModalIn {
  from { opacity: 0; transform: translateY(18px) scale(.96); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.wechat-modal {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100dvh;
  max-width: none;
  max-height: none;
  padding: 18px;
  border: 0;
  color: #fff;
  background: transparent;
}
.wechat-modal[open] {
  display: grid;
  place-items: center;
}
.wechat-modal::backdrop {
  background:
    radial-gradient(circle at 72% 8%, rgba(117,231,255,.22), transparent 34%),
    rgba(1, 6, 16, .84);
  backdrop-filter: blur(18px);
}
.wechat-modal-panel {
  position: relative;
  width: min(92vw, 640px);
  max-height: calc(100dvh - 36px);
  display: grid;
  gap: 16px;
  padding: clamp(22px, 4vw, 36px);
  overflow: auto;
  border: 1px solid rgba(117,231,255,.24);
  border-radius: 38px;
  background:
    linear-gradient(90deg, rgba(255,255,255,.055) 1px, transparent 1px),
    linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
    radial-gradient(circle at 84% 12%, rgba(117,231,255,.28), transparent 34%),
    linear-gradient(145deg, rgba(7,16,31,.98), rgba(6,24,44,.96) 58%, rgba(3,8,21,.98));
  background-size: 32px 32px, 32px 32px, auto, auto;
  box-shadow: 0 42px 120px rgba(0,0,0,.5), inset 0 1px 0 rgba(255,255,255,.12);
  animation: qrModalIn .24s cubic-bezier(.2,.72,.18,1);
}
.wechat-modal-close {
  position: absolute;
  right: 18px;
  top: 18px;
  min-height: 38px;
  padding: 0 13px;
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 999px;
  color: rgba(255,255,255,.86);
  background: rgba(255,255,255,.08);
  cursor: pointer;
}
.wechat-modal-close:hover { background: rgba(255,255,255,.14); }
.wechat-corner {
  position: absolute;
  right: 74px;
  top: 19px;
  display: grid;
  place-items: center;
  min-width: 38px;
  height: 38px;
  border-radius: 999px;
  color: #001426;
  background: linear-gradient(135deg, #fff, #aeefff);
  font-size: 20px;
  font-weight: 950;
  letter-spacing: .02em;
}
.wechat-corner::after {
  content: "";
  position: absolute;
  right: -15px;
  top: -11px;
  width: 42px;
  height: 42px;
  border-top: 2px solid rgba(174,239,255,.78);
  border-right: 2px solid rgba(174,239,255,.78);
  border-radius: 0 22px 0 0;
}
.wechat-modal-kicker {
  display: inline-flex;
  width: fit-content;
  margin-top: 2px;
  padding: 8px 12px;
  border-radius: 999px;
  color: #001426;
  background: linear-gradient(135deg, #fff, #aeefff);
  font-size: 12px;
  font-weight: 950;
  letter-spacing: .18em;
}
.wechat-modal h2 {
  margin-bottom: 0;
  padding-right: 92px;
  font-size: clamp(30px, 5vw, 48px);
}
.wechat-modal p {
  margin: 0;
  color: rgba(255,255,255,.68);
  font-size: 15px;
  line-height: 1.72;
}
.wechat-steps {
  display: grid;
  gap: 10px;
  margin: 4px 0 0;
  padding: 0;
  list-style: none;
}
.wechat-steps li {
  display: grid;
  grid-template-columns: 38px 1fr;
  align-items: center;
  gap: 12px;
  padding: 12px;
  border-radius: 18px;
  background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.1);
}
.wechat-steps strong {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 14px;
  color: #001426;
  background: linear-gradient(135deg, #fff, #aeefff);
}
.wechat-steps span { color: rgba(255,255,255,.82); line-height: 1.5; }
.wechat-target {
  display: grid;
  gap: 5px;
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(117,231,255,.1);
  border: 1px solid rgba(117,231,255,.2);
}
.wechat-target span {
  color: rgba(255,255,255,.54);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: .14em;
}
.wechat-target strong {
  overflow-wrap: anywhere;
  color: #fff;
  font-size: 17px;
}
.wechat-modal-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.wechat-copy-status {
  min-height: 1.7em;
  color: var(--cyan) !important;
  font-weight: 800;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 34px clamp(18px, 5vw, 78px);
  color: rgba(255,255,255,.56);
  background: #030815;
  font-size: 14px;
}
.site-footer p { margin: 0; }

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .8s ease, transform .8s cubic-bezier(.2, .72, .18, 1);
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

:focus-visible { outline: 3px solid rgba(24,151,255,.75); outline-offset: 3px; }

@media (max-width: 1120px) {
  .hero { grid-template-columns: 1fr; padding-top: calc(var(--header-h) + 46px); }
  .hero-stage { min-height: 500px; }
  .cabin-device { width: min(calc(100% - 240px), 720px); }
  .hero-phone-stack { right: 0; width: min(70%, 520px); }
  .hero-content { max-width: 820px; }
  .desktop, .assistant-grid, .download-shell { grid-template-columns: 1fr; }
  .desktop { min-height: auto; }
  .phone-gallery { min-height: 610px; }
}

@media (max-width: 820px) {
  :root { --header-h: 64px; }
  .site-header { padding-inline: 16px; }
  .brand-copy, .site-nav { display: none; }
  .header-cta { padding: 9px 14px; }
  h1 { font-size: clamp(48px, 16vw, 76px); }
  h2 { font-size: clamp(36px, 12vw, 56px); }
  .hero { padding-inline: 16px; padding-bottom: 34px; }
  .hero-stage {
    min-height: 0;
    display: grid;
    place-items: center;
    margin: 26px auto 0;
    width: min(100%, 700px);
  }
  .cabin-device { position: relative; left: auto; top: auto; transform: none; width: min(100%, 680px); border-radius: 24px; padding: 8px; }
  .cabin-device img, .cabin-device video { border-radius: 17px; }
  .hero-phone-stack {
    right: 0;
    top: 50%;
    width: 100%;
    height: min(58vw, 360px);
    transform: translateY(-50%) translateX(22px);
  }
  .phone-shot-card { width: min(22vw, 124px); border-radius: 22px; padding: 0; }
  .phone-shot-card img { height: auto; border-radius: 19px; transform: none; }
  .shot-home { right: 8px; top: 8px; }
  .shot-trip { left: 8px; top: 34px; }
  .shot-charge { right: 148px; top: 58px; }
  .shot-stats { left: 210px; top: 18px; }
  .hero-stage.show-phone .hero-cabin { opacity: 0; filter: blur(6px); transform: scale(.96); }
  .hero-stage.show-phone .hero-phone-stack { opacity: 1; transform: translateY(-50%) translateX(0); }
  .signal-card { display: none; }
  .hero-metrics { position: static; grid-template-columns: repeat(2, minmax(0, 1fr)); margin-top: 20px; border-radius: 20px; }
  .hero-metrics div { padding: 15px 16px; }
  .overview, .desktop, .lyrics-show, .assistant, .scenes, .download { padding: 82px 16px; }
  .entertainment { padding: 0; }
  .entertainment-hero { padding-inline: 16px; }
  .entertainment .section-copy {
    margin-top: clamp(34px, 8svh, 76px);
  }
  .triad-grid, .download-grid { grid-template-columns: 1fr; }
  .triad-card.accent { order: -1; }
  .triad-card { min-height: 240px; }
  .triad-icon { margin-bottom: 42px; }
  .screen-selector { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .effect-panel { width: calc(100vw - 32px); }
  .effect-panel div { left: 14px; right: 14px; bottom: 14px; max-width: none; padding: 18px; }
  .effect-panel div p { display: none; }
  .hero-actions { gap: 12px; }
  .hero-wechat-card {
    flex-basis: 100%;
    max-width: none;
    grid-template-columns: 98px minmax(0, 1fr);
    min-height: 112px;
    border-radius: 26px;
  }
  .hero-wechat-card img { width: 98px; height: 98px; border-radius: 22px; }
  .hero-wechat-card strong { font-size: 18px; }
  .lyrics-show { min-height: auto; grid-template-columns: 1fr; }
  .phone-gallery { order: -1; min-height: 520px; }
  .phone-gallery .phone-device { width: 205px; height: 445px; }
  .phone-gallery .phone-device.is-active { transform: translateX(-16px) translateY(-10px) scale(1) rotate(-3deg); }
  .phone-gallery .phone-device.is-next { transform: translateX(82px) translateY(4px) scale(.9) rotate(7deg); }
  .phone-gallery .phone-device.is-prev { transform: translateX(-92px) translateY(30px) scale(.84) rotate(-9deg); }
  .assistant-points article { grid-template-columns: 1fr; }
  .scene-card, .scene-card.reverse { grid-template-columns: 1fr; border-radius: 28px; }
  .scene-card.reverse .scene-media { order: 0; }
  .download-wechat-card {
    grid-template-columns: 1fr;
    min-height: 0;
  }
  .download-wechat-zoom {
    width: min(100%, 260px);
    justify-self: start;
  }
  .download-wechat-card img {
    width: 100%;
    height: auto;
    justify-self: start;
  }
  .qr-modal { padding: 12px; }
  .qr-modal-panel {
    width: min(100%, 520px);
    border-radius: 28px;
  }
  .qr-modal h2 { padding-inline: 0; }
  .qr-modal-panel > img {
    width: min(82vw, 360px);
    border-radius: 26px;
  }
  .wechat-modal { padding: 12px; }
  .wechat-modal-panel {
    width: min(100%, 520px);
    gap: 13px;
    border-radius: 28px;
  }
  .wechat-modal h2 {
    padding-right: 76px;
    font-size: clamp(28px, 8vw, 38px);
  }
  .wechat-corner {
    right: 68px;
    top: 18px;
  }
  .wechat-steps li { grid-template-columns: 34px 1fr; }
  .wechat-steps strong { width: 34px; height: 34px; border-radius: 12px; }
  .wechat-modal-actions { display: grid; }
  .wechat-modal-actions .btn { width: 100%; }
  .site-footer { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .001ms !important; animation-duration: .001ms !important; animation-iteration-count: 1 !important; }
  .reveal { opacity: 1; transform: none; }
}

/* Manual page */
.manual-page .site-header { color: rgba(255,255,255,.9); }
.manual-hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  grid-template-columns: minmax(0, .88fr) minmax(480px, 1.12fr);
  align-items: center;
  gap: clamp(28px, 5vw, 84px);
  padding: calc(var(--header-h) + 58px) clamp(18px, 5vw, 78px) 76px;
  overflow: hidden;
  isolation: isolate;
}
.manual-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(circle at 78% 18%, rgba(91,240,181,.22), transparent 30%),
    radial-gradient(circle at 18% 70%, rgba(24,151,255,.26), transparent 36%),
    linear-gradient(135deg, #020611 0%, #071426 58%, #030815 100%);
}
.manual-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(115deg, #000 0%, #000 46%, transparent 82%);
}
.manual-hero-copy { max-width: 720px; }
.manual-hero-copy h1 {
  font-size: clamp(48px, 5.4vw, 82px);
  line-height: 1;
}
.manual-hero-copy p { max-width: 650px; color: rgba(255,255,255,.72); font-size: clamp(17px, 1.45vw, 21px); }
.manual-hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 32px; }
.manual-console {
  position: relative;
  width: min(100%, 900px);
  margin-inline: auto;
}
.manual-console::before {
  content: "";
  position: absolute;
  inset: -28px;
  z-index: -1;
  border-radius: 44px;
  background: radial-gradient(circle, rgba(117,231,255,.28), transparent 68%);
  filter: blur(4px);
}
.manual-console-screen {
  position: relative;
  overflow: hidden;
  padding: 12px;
  border-radius: 38px;
  border: 1px solid rgba(255,255,255,.15);
  background: linear-gradient(180deg, rgba(255,255,255,.18), rgba(255,255,255,.05));
  box-shadow: 0 46px 130px rgba(0,0,0,.44), inset 0 0 0 1px rgba(255,255,255,.1);
}
.manual-console-screen img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 27px;
  background: #020611;
}
.manual-intro { padding: 118px clamp(18px, 5vw, 78px); }
.manual-principles {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 48px;
}
.manual-principles article {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: #fff;
  box-shadow: 0 24px 70px rgba(7,16,31,.07);
}
.manual-principles strong { display: block; margin-bottom: 10px; font-size: 24px; letter-spacing: -0.04em; }
.manual-principles span { color: var(--muted); line-height: 1.7; }
.manual-guides {
  padding: 120px clamp(18px, 5vw, 78px);
  background:
    radial-gradient(circle at 10% 8%, rgba(24,151,255,.22), transparent 32%),
    radial-gradient(circle at 92% 40%, rgba(123,97,255,.18), transparent 34%),
    #040914;
}
.manual-guides-light {
  background:
    radial-gradient(circle at 92% 8%, rgba(117,231,255,.26), transparent 34%),
    linear-gradient(180deg, #f5f7fb, #edf3fb);
}
.manual-section-heading { max-width: 980px; margin: 0 auto 54px; text-align: center; }
.manual-section-heading p { margin-inline: auto; max-width: 760px; color: rgba(255,255,255,.64); font-size: 18px; }
.manual-guides-light .manual-section-heading p { color: var(--muted); }
.manual-card-grid { display: grid; gap: 28px; }
.manual-card-grid.compact { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.manual-card {
  display: grid;
  grid-template-columns: minmax(310px, .72fr) minmax(0, 1fr);
  gap: clamp(22px, 4vw, 54px);
  align-items: center;
  padding: clamp(18px, 2.8vw, 34px);
  border: 1px solid rgba(255,255,255,.13);
  border-radius: 38px;
  background: linear-gradient(135deg, rgba(255,255,255,.11), rgba(255,255,255,.04));
  box-shadow: 0 30px 90px rgba(0,0,0,.28);
}
.manual-guides-light .manual-card {
  border-color: rgba(7,16,31,.08);
  background: rgba(255,255,255,.78);
  box-shadow: 0 28px 88px rgba(7,16,31,.09);
}
.manual-card-grid.compact .manual-card { grid-template-columns: 1fr; align-content: start; }
.manual-card-copy { min-width: 0; }
.manual-step {
  display: inline-grid;
  place-items: center;
  width: 48px;
  height: 48px;
  margin-bottom: 20px;
  border-radius: 16px;
  color: #001426;
  background: linear-gradient(135deg, #fff, #aeefff);
  font-weight: 950;
  letter-spacing: -0.04em;
  box-shadow: 0 16px 38px rgba(117,231,255,.18);
}
.manual-card h3 { color: #fff; }
.manual-guides-light .manual-card h3 { color: var(--ink); }
.manual-card p { color: rgba(255,255,255,.66); font-size: 17px; }
.manual-guides-light .manual-card p { color: var(--muted); }
.manual-card ul {
  display: grid;
  gap: 10px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}
.manual-card li {
  position: relative;
  padding-left: 22px;
  color: rgba(255,255,255,.62);
  line-height: 1.65;
}
.manual-guides-light .manual-card li { color: #5f7188; }
.manual-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 18px rgba(117,231,255,.7);
}
.manual-video-card { margin: 0; min-width: 0; }
.manual-video-shell {
  position: relative;
  overflow: hidden;
  aspect-ratio: 1816 / 1080;
  border-radius: 30px;
  background: #020611;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.12), 0 24px 70px rgba(0,0,0,.24);
}
.manual-guides-light .manual-video-shell { box-shadow: inset 0 0 0 1px rgba(7,16,31,.08), 0 24px 70px rgba(7,16,31,.12); }
.manual-video-poster,
.manual-video-shell video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 30px;
  background: #020611;
}
.manual-video-shell video {
  opacity: 0;
}
.manual-video-card.is-loaded .manual-video-shell video { opacity: 1; }
.manual-video-card.is-loaded .manual-video-poster { display: none; }
.manual-play {
  position: absolute;
  inset: 0;
  z-index: 3;
  display: grid;
  place-items: center;
  width: 100%;
  border: 0;
  cursor: pointer;
  color: #001426;
  background: linear-gradient(180deg, rgba(3,8,21,.04), rgba(3,8,21,.46));
}
.manual-play span {
  width: clamp(66px, 8vw, 94px);
  height: clamp(66px, 8vw, 94px);
  border-radius: 50%;
  background: rgba(255,255,255,.94);
  box-shadow: 0 18px 48px rgba(0,0,0,.28);
  clip-path: none;
  position: relative;
}
.manual-play span::before {
  content: "";
  position: absolute;
  left: 40%;
  top: 31%;
  border-top: 13px solid transparent;
  border-bottom: 13px solid transparent;
  border-left: 20px solid #07101f;
}
.manual-play::after {
  content: "点击后加载视频";
  position: absolute;
  left: 50%;
  bottom: 22px;
  transform: translateX(-50%);
  padding: 9px 13px;
  border-radius: 999px;
  background: rgba(3,8,21,.66);
  color: rgba(255,255,255,.82);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: .08em;
  backdrop-filter: blur(14px);
}
.manual-play:hover span { transform: scale(1.04); }
.manual-video-card.is-loaded .manual-play { display: none; }
.manual-video-card figcaption {
  margin-top: 12px;
  color: rgba(255,255,255,.56);
  font-size: 13px;
}
.manual-guides-light .manual-video-card figcaption { color: var(--muted); }
.manual-end { padding: 120px clamp(18px, 5vw, 78px); }
.download-grid.single { grid-template-columns: repeat(2, minmax(0, 1fr)); }

@media (max-width: 1120px) {
  .manual-hero { grid-template-columns: 1fr; }
  .manual-card, .manual-card-grid.compact { grid-template-columns: 1fr; }
  .site-nav { gap: clamp(10px, 1.8vw, 22px); }
}

@media (max-width: 820px) {
  .manual-hero {
    min-height: auto;
    gap: 24px;
    padding: calc(var(--header-h) + 30px) 16px 54px;
  }
  .manual-hero-copy h1 {
    font-size: clamp(40px, 9vw, 62px);
    line-height: 1.02;
  }
  .manual-hero-copy p {
    font-size: 16px;
    line-height: 1.62;
  }
  .manual-hero-actions { margin-top: 24px; }
  .manual-console { width: min(100%, 520px); }
  .manual-intro, .manual-guides, .manual-end { padding: 82px 16px; }
  .manual-principles { grid-template-columns: 1fr; }
  .manual-console-screen { padding: 8px; border-radius: 28px; }
  .manual-console-screen img { border-radius: 20px; }
  .manual-card { border-radius: 28px; }
  .manual-video-shell, .manual-video-poster, .manual-video-shell video { border-radius: 22px; }
  .download-grid.single { grid-template-columns: 1fr; }
}
.manual-video-card.is-loaded .manual-video-shell video { display: block; }