:root {
  --bg: #f8f8f8;
  --panel: #ffffff;
  --ink: #09090a;
  --muted: rgba(47, 47, 48, .62);
  --soft: rgba(47, 47, 48, .08);
  --brand: #2f78ff;
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  border: 0;
  color: inherit;
  font: inherit;
}

.topbar {
  align-items: center;
  background: rgba(255, 255, 255, .92);
  border-bottom: 1px solid rgba(0, 0, 0, .06);
  display: flex;
  height: 64px;
  left: 0;
  padding: 0 max(24px, calc((100vw - 1280px) / 2));
  position: sticky;
  right: 0;
  top: 0;
  z-index: 50;
  backdrop-filter: saturate(160%) blur(18px);
}

.brand img {
  height: 31px;
  width: auto;
}

.nav-panel {
  align-items: center;
  display: flex;
  gap: 34px;
  margin-left: 54px;
  width: 100%;
}

.nav-panel a {
  color: rgba(47, 47, 48, .78);
  font-size: 15px;
  transition: color .2s ease;
}

.nav-panel a:hover {
  color: var(--ink);
}

.nav-download {
  background: #09090a;
  border-radius: 6px;
  color: #fff !important;
  margin-left: auto;
  padding: 10px 22px;
}

.menu-toggle {
  background: transparent;
  display: none;
  height: 42px;
  margin-left: auto;
  width: 42px;
}

.menu-toggle span {
  background: #111;
  display: block;
  height: 2px;
  margin: 6px auto;
  width: 24px;
}

.hero {
  background: transparent;
  padding: 120px 24px 0;
  position: relative;
  text-align: center;
}

.hero h1 {
  font-size: clamp(34px, 5.2vw, 72px);
  letter-spacing: 0;
  line-height: 1.04;
  margin: 0;
  white-space: nowrap;
}

.hero p {
  color: var(--muted);
  font-size: clamp(18px, 2vw, 28px);
  margin: 24px 0 34px;
}

.primary-btn {
  align-items: center;
  background: #111;
  border-radius: 8px;
  color: #fff;
  display: inline-flex;
  font-size: 22px;
  font-weight: 700;
  height: 66px;
  justify-content: center;
  min-width: 218px;
}

.hero-badges {
  --badge-opacity: 1;
  --badge-rise: 0px;
  bottom: -150px;
  height: 520px;
  left: 0;
  margin: 0;
  max-width: none;
  pointer-events: none;
  position: absolute;
  right: 0;
  top: 134px;
  width: 100%;
  z-index: 5;
}

.kv {
  background: transparent;
  min-height: 560px;
  overflow: hidden;
  padding: 0 24px 90px;
  position: relative;
}

.kv::before {
  background: none;
  content: none;
  display: none;
}

.kv-main {
  background: transparent;
  filter: drop-shadow(0 42px 70px rgba(27, 53, 93, .18));
  height: min(520px, 80vh);
  margin: 0 auto;
  max-height: 80%;
  max-width: 98vw;
  object-fit: contain;
  position: relative;
  width: auto;
  z-index: 2;
}

.badge {
  --drift-x: 0px;
  --drift-y: 0px;
  position: absolute;
  z-index: 3;
  filter: drop-shadow(0 18px 36px rgba(26, 41, 68, .14));
  opacity: var(--badge-opacity);
  transform: translate(var(--drift-x), calc(var(--drift-y) + var(--badge-rise)));
  transition: opacity .12s linear, transform .12s linear;
  will-change: opacity, transform;
}

.badge-favorite-red {
  left: 22%;
  top: 310px;
  width: 76px;
}

.badge-recommend-flat {
  left: 6%;
  top: 168px;
  width: 54px;
}

.badge-like-green {
  left: calc(50% - 33px);
  top: 286px;
  width: 66px;
}

.badge-like-blue {
  right: 7%;
  top: 112px;
  width: 62px;
}

.section {
  padding: 96px 24px;
}

#comments,
.nav-panel a[href="#comments"] {
  display: none !important;
}

.section-title {
  font-size: clamp(34px, 5vw, 64px);
  letter-spacing: 0;
  line-height: 1.1;
  margin: 0 auto 56px;
  text-align: center;
}

.scenarios {
  display: block;
  margin: 0 auto;
  max-width: 1180px;
}

.scenario-grid {
  display: grid;
  gap: 28px;
}

.scenario-card {
  background: var(--panel);
  border: 1px solid rgba(47, 47, 48, .08);
  border-radius: var(--radius);
  box-shadow: 0 18px 44px rgba(36, 49, 76, .06);
  cursor: pointer;
  display: grid;
  gap: 18px 34px;
  grid-template-columns: minmax(260px, .72fr) minmax(360px, 1.28fr);
  padding: 34px;
  transition: transform .25s ease, box-shadow .25s ease;
}

.scenario-card.active,
.scenario-card:hover {
  box-shadow: 0 28px 74px rgba(36, 49, 76, .12);
  transform: translateY(-3px);
}

.scenario-card > span {
  align-items: center;
  color: var(--muted);
  display: flex;
  font-size: 18px;
  gap: 10px;
  grid-column: 1;
}

.scenario-card span img {
  height: 24px;
  width: 24px;
}

.scenario-card h2 {
  font-size: clamp(30px, 4vw, 48px);
  grid-column: 1;
  line-height: 1.12;
  margin: 0;
}

.scenario-card ul {
  color: var(--muted);
  grid-column: 1;
  line-height: 2;
  list-style: none;
  margin: 0;
  padding: 0;
}

.scenario-card li::before {
  color: #29b05e;
  content: "✓";
  font-weight: 700;
  margin-right: 10px;
}

.scenario-card a {
  color: var(--ink);
  font-weight: 700;
  grid-column: 1;
  width: max-content;
}

.scenario-shot {
  align-self: center;
  border-radius: 8px;
  grid-column: 2;
  grid-row: 1 / span 5;
  justify-self: center;
  max-height: 380px;
  object-fit: contain;
  width: 100%;
}

.scenario-card .card-download {
  --edge-proximity: 0;
  --cursor-angle: 45deg;
  --edge-sensitivity: 30;
  --color-sensitivity: 50;
  --cone-spread: 25;
  --glow-padding: 28px;
  --card-bg: #111;
  align-items: center;
  background:
    linear-gradient(var(--card-bg) 0 100%) padding-box,
    linear-gradient(135deg, rgba(192, 132, 252, .5), rgba(244, 114, 182, .42), rgba(56, 189, 248, .5)) border-box;
  border: 1px solid rgba(255, 255, 255, .18);
  border-radius: 8px;
  color: #fff;
  display: inline-flex;
  font-size: 16px;
  height: 44px;
  isolation: isolate;
  justify-content: center;
  min-width: 128px;
  overflow: visible;
  padding: 0 22px;
  position: relative;
  transform: translate3d(0, 0, 0.01px);
  transition: box-shadow .2s ease, transform .2s ease;
}

.scenario-card .card-download::before,
.scenario-card .card-download::after {
  border-radius: inherit;
  content: "";
  inset: 0;
  opacity: 0;
  pointer-events: none;
  position: absolute;
  transition: opacity .25s ease-out;
  z-index: -1;
}

.scenario-card .card-download::before {
  border: 1px solid transparent;
  background:
    linear-gradient(var(--card-bg) 0 100%) padding-box,
    radial-gradient(at 80% 55%, #c084fc 0, transparent 50%) border-box,
    radial-gradient(at 69% 34%, #f472b6 0, transparent 50%) border-box,
    radial-gradient(at 8% 6%, #38bdf8 0, transparent 50%) border-box,
    radial-gradient(at 41% 38%, #22d3ee 0, transparent 50%) border-box,
    radial-gradient(at 86% 85%, #34d399 0, transparent 50%) border-box,
    radial-gradient(at 82% 18%, #facc15 0, transparent 50%) border-box,
    linear-gradient(#c084fc 0 100%) border-box;
  mask-image:
    conic-gradient(
      from var(--cursor-angle) at center,
      black calc(var(--cone-spread) * 1%),
      transparent calc((var(--cone-spread) + 15) * 1%),
      transparent calc((100 - var(--cone-spread) - 15) * 1%),
      black calc((100 - var(--cone-spread)) * 1%)
    );
  opacity: calc((var(--edge-proximity) - var(--color-sensitivity)) / (100 - var(--color-sensitivity)));
}

.scenario-card .card-download::after {
  inset: calc(var(--glow-padding) * -1);
  box-shadow:
    inset 0 0 0 1px hsl(210deg 90% 78% / 84%),
    inset 0 0 12px hsl(210deg 90% 78% / 34%),
    inset 0 0 28px hsl(280deg 90% 80% / 24%),
    0 0 14px hsl(210deg 90% 78% / 28%),
    0 0 32px hsl(280deg 90% 80% / 22%);
  mask-image:
    conic-gradient(
      from var(--cursor-angle) at center,
      black 2.5%,
      transparent 10%,
      transparent 90%,
      black 97.5%
    );
  opacity: calc((var(--edge-proximity) - var(--edge-sensitivity)) / (100 - var(--edge-sensitivity)));
}

.scenario-card .card-download:not(:hover)::before,
.scenario-card .card-download:not(:hover)::after {
  display: none;
  opacity: 0;
  transition: opacity .65s ease-in-out;
}

.scenario-card .card-download:hover {
  box-shadow: 0 18px 36px rgba(47, 120, 255, .24);
  transform: translateY(-2px);
}

.scene-preview {
  align-items: center;
  background: linear-gradient(180deg, #f8fbff 0%, #edf4ff 100%);
  border-radius: 8px;
  box-shadow: 0 40px 90px rgba(16, 30, 54, .18);
  display: flex;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.scene-preview > img:not(.play) {
  display: none;
  height: auto;
  max-height: 92%;
  max-width: 94%;
  object-fit: contain;
  width: 100%;
}

.scene-preview > img.active {
  display: block;
}

.scene-preview .play {
  display: none;
  height: 68px;
  left: 50%;
  opacity: .9;
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 68px;
}

.function {
  background: #fff;
}

.function-box {
  background: transparent;
  box-shadow: none;
  border-radius: 0;
  margin: 0 auto;
  max-width: 1220px;
  overflow: visible;
  padding: 0 0 64px;
}

.tabs {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(4, 1fr);
}

.tabs button {
  --edge-proximity: 0;
  --cursor-angle: 45deg;
  --edge-sensitivity: 30;
  --color-sensitivity: 50;
  --cone-spread: 25;
  --glow-padding: 34px;
  --card-bg: #fff;
  background:
    linear-gradient(var(--card-bg) 0 100%) padding-box,
    linear-gradient(135deg, rgba(96, 165, 250, .22), rgba(244, 114, 182, .18), rgba(52, 211, 153, .18)) border-box;
  border: 1px solid rgba(255, 255, 255, .72);
  border-radius: 8px;
  box-shadow: none;
  cursor: pointer;
  font-weight: 700;
  isolation: isolate;
  min-height: 92px;
  overflow: visible;
  padding: 16px 18px;
  position: relative;
  text-align: left;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
  transform: translate3d(0, 0, 0.01px);
  z-index: 1;
}

.tabs button::before,
.tabs button::after {
  border-radius: inherit;
  content: "";
  inset: 0;
  opacity: 0;
  pointer-events: none;
  position: absolute;
  transition: opacity .25s ease-out;
  z-index: -1;
}

.tabs button::before {
  border: 1px solid transparent;
  background:
    linear-gradient(var(--card-bg) 0 100%) padding-box,
    radial-gradient(at 80% 55%, #c084fc 0, transparent 50%) border-box,
    radial-gradient(at 69% 34%, #f472b6 0, transparent 50%) border-box,
    radial-gradient(at 8% 6%, #38bdf8 0, transparent 50%) border-box,
    radial-gradient(at 41% 38%, #22d3ee 0, transparent 50%) border-box,
    radial-gradient(at 86% 85%, #34d399 0, transparent 50%) border-box,
    radial-gradient(at 82% 18%, #facc15 0, transparent 50%) border-box,
    linear-gradient(#c084fc 0 100%) border-box;
  mask-image:
    conic-gradient(
      from var(--cursor-angle) at center,
      black calc(var(--cone-spread) * 1%),
      transparent calc((var(--cone-spread) + 15) * 1%),
      transparent calc((100 - var(--cone-spread) - 15) * 1%),
      black calc((100 - var(--cone-spread)) * 1%)
    );
  opacity: calc((var(--edge-proximity) - var(--color-sensitivity)) / (100 - var(--color-sensitivity)));
}

.tabs button::after {
  inset: calc(var(--glow-padding) * -1);
  box-shadow:
    inset 0 0 0 1px hsl(210deg 90% 78% / 82%),
    inset 0 0 14px hsl(210deg 90% 78% / 32%),
    inset 0 0 34px hsl(280deg 90% 80% / 24%),
    0 0 14px hsl(210deg 90% 78% / 26%),
    0 0 34px hsl(280deg 90% 80% / 18%);
  mask-image:
    conic-gradient(
      from var(--cursor-angle) at center,
      black 2.5%,
      transparent 10%,
      transparent 90%,
      black 97.5%
    );
  opacity: calc((var(--edge-proximity) - var(--edge-sensitivity)) / (100 - var(--edge-sensitivity)));
}

.tabs button:not(:hover)::before,
.tabs button:not(:hover)::after {
  display: none;
  opacity: 0;
  transition: opacity .65s ease-in-out;
}

.tabs button:hover {
  box-shadow: 0 20px 42px rgba(47, 120, 255, .14);
  transform: translateY(-2px);
}

.tabs button span {
  color: var(--muted);
  display: block;
  font-size: 12px;
  font-weight: 400;
  line-height: 1.4;
  margin-top: 6px;
}

.tabs button.active {
  --card-bg: #f3f7ff;
  background:
    linear-gradient(var(--card-bg) 0 100%) padding-box,
    linear-gradient(135deg, #60a5fa, #a78bfa, #22d3ee) border-box;
  box-shadow: 0 18px 44px rgba(47, 120, 255, .18);
}

.function-desc {
  color: var(--muted);
  font-size: 22px;
  margin: 38px 0 18px;
  text-align: center;
}

.function-art {
  align-items: center;
  aspect-ratio: 16 / 8;
  display: flex;
  justify-content: center;
  margin: 0 auto;
  max-width: 1040px;
  position: relative;
}

.function-main {
  filter: drop-shadow(0 34px 48px rgba(37, 57, 98, .17));
  max-height: 92%;
  object-fit: contain;
  width: 100%;
}

.function-main.slide-in {
  animation: functionImageSlideIn .56s cubic-bezier(.2, .72, .2, 1) both;
}

@keyframes functionImageSlideIn {
  from {
    opacity: 0;
    transform: translateX(64px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.tab-art {
  display: none;
  inset: 0;
  position: absolute;
}

.tab-art.active {
  display: block;
}

.art-main {
  bottom: 7%;
  filter: drop-shadow(0 34px 48px rgba(37, 57, 98, .17));
  left: 50%;
  max-height: 78%;
  position: absolute;
  transform: translateX(-50%);
}

.float {
  position: absolute;
  filter: drop-shadow(0 20px 28px rgba(37, 57, 98, .14));
}

.f-a {
  left: 8%;
  top: 10%;
  width: 34%;
}

.f-b {
  bottom: 6%;
  right: 9%;
  width: 22%;
}

.f-c {
  right: 4%;
  top: 12%;
  width: 16%;
}

.comments {
  overflow: hidden;
}

.marquee {
  margin: 18px -24px 0;
  overflow: hidden;
}

.review-track {
  animation: slideLeft 26s linear infinite;
  display: flex;
  gap: 18px;
  width: max-content;
}

.reverse .review-track {
  animation-direction: reverse;
}

.review-track article {
  background: #fff;
  border: 1px solid rgba(47, 47, 48, .08);
  border-radius: 8px;
  min-height: 198px;
  padding: 24px;
  width: 380px;
}

.review-track img {
  border-radius: 50%;
  display: inline-block;
  height: 48px;
  margin-right: 12px;
  vertical-align: middle;
  width: 48px;
}

.review-track strong {
  vertical-align: middle;
}

.review-track strong::after {
  background-image: url("assets/icon_starcomment_a32e455b.png");
  background-repeat: repeat-x;
  background-size: 16px 16px;
  content: "";
  display: block;
  height: 16px;
  margin: -12px 0 0 62px;
  width: 80px;
}

.review-track p {
  color: var(--muted);
  line-height: 1.75;
  margin: 22px 0 0;
}

@keyframes slideLeft {
  from { transform: translateX(0); }
  to { transform: translateX(-45%); }
}

.news {
  background: #fff;
}

.news-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: minmax(340px, 1.1fr) minmax(380px, .9fr);
  margin: 0 auto;
  max-width: 1180px;
}

.news-main,
.news-list article {
  background: #f8f8f8;
  border-radius: 8px;
  overflow: hidden;
}

.news-main img {
  aspect-ratio: 16 / 9;
  object-fit: cover;
  width: 100%;
}

.news-main h3,
.news-main time,
.news-main p {
  display: block;
  margin-left: 28px;
  margin-right: 28px;
}

.news-main h3 {
  font-size: 28px;
  margin-bottom: 10px;
  margin-top: 26px;
}

time {
  color: rgba(47, 47, 48, .45);
  font-size: 14px;
}

.news-main p,
.news-list p {
  color: var(--muted);
  line-height: 1.7;
}

.news-main p {
  margin-bottom: 28px;
}

.news-list {
  display: grid;
  gap: 18px;
}

.news-list article {
  display: grid;
  gap: 18px;
  grid-template-columns: 180px 1fr;
  padding: 14px;
}

.news-list img {
  aspect-ratio: 4 / 3;
  border-radius: 6px;
  height: 100%;
  object-fit: cover;
}

.news-list h3 {
  font-size: 19px;
  line-height: 1.35;
  margin: 6px 0 6px;
}

.news-list p {
  margin: 8px 0 0;
}

.safe-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(4, 1fr);
  margin: 0 auto;
  max-width: 1180px;
}

.safe-grid article {
  align-items: center;
  background: #fff;
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  min-height: 190px;
  justify-content: center;
  padding: 28px;
  text-align: center;
}

.safe-grid img {
  height: 58px;
  margin-bottom: 22px;
  object-fit: contain;
}

.safe-grid h3 {
  color: var(--muted);
  font-size: 18px;
  font-weight: 500;
  margin: 0;
}

.footer {
  background: #242424;
  color: rgba(242, 242, 247, .72);
  padding: 70px 24px 54px;
}

.footer-inner {
  display: grid;
  gap: 80px;
  grid-template-columns: minmax(220px, 1fr) 2fr;
  margin: 0 auto;
  max-width: 1180px;
}

.footer-brand > img {
  height: 32px;
}

.socials {
  display: flex;
  gap: 18px;
  margin-top: 24px;
}

.socials img {
  height: 24px;
  opacity: .75;
  width: 24px;
}

.footer-cols {
  display: grid;
  gap: 36px;
  grid-template-columns: repeat(4, 1fr);
}

.footer h4 {
  color: #fff;
  font-size: 15px;
  margin: 0 0 18px;
}

.footer a {
  display: block;
  font-size: 14px;
  line-height: 2.35;
}

.copyright {
  border-top: 1px solid rgba(242, 242, 247, .14);
  font-size: 12px;
  line-height: 2;
  margin: 62px auto 0;
  max-width: 1180px;
  padding-top: 34px;
}

@media (max-width: 980px) {
  .topbar {
    padding: 0 18px;
  }

  .menu-toggle {
    display: block;
  }

  .nav-panel {
    background: #fff;
    border-bottom: 1px solid rgba(0, 0, 0, .06);
    display: none;
    flex-direction: column;
    gap: 0;
    left: 0;
    margin: 0;
    padding: 14px 22px 22px;
    position: absolute;
    right: 0;
    top: 64px;
  }

  .nav-panel.open {
    display: flex;
  }

  .nav-panel a {
    padding: 14px 0;
    width: 100%;
  }

  .nav-download {
    margin-left: 0;
    text-align: center;
  }

  .kv {
    min-height: auto;
  }

  .badge-favorite-red { left: 12%; top: 284px; width: 54px; }
  .badge-recommend-flat { left: 5%; top: 156px; width: 42px; }
  .badge-like-green { left: calc(50% - 24px); top: 254px; width: 48px; }
  .badge-like-blue { right: 5%; top: 132px; width: 46px; }

  .scenarios,
  .news-grid,
  .footer-inner {
    grid-template-columns: 1fr;
  }

  .scenario-card {
    grid-template-columns: 1fr;
  }

  .scenario-card > span,
  .scenario-card h2,
  .scenario-card ul,
  .scenario-card a,
  .scenario-shot {
    grid-column: 1;
  }

  .scenario-shot {
    grid-row: auto;
    max-height: none;
    width: 100%;
  }

  .scene-preview {
    order: -1;
  }

  .tabs {
    gap: 8px;
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .tabs button {
    min-height: 72px;
    padding: 10px 8px;
  }

  .tabs button span {
    font-size: 11px;
    line-height: 1.3;
  }

  .function-art {
    aspect-ratio: 16 / 11;
  }

  .safe-grid,
  .footer-cols {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .hero {
    padding-top: 72px;
  }

  .primary-btn {
    font-size: 18px;
    height: 56px;
    min-width: 176px;
  }

  .hero-badges {
    height: 420px;
    top: 94px;
    width: 100%;
  }

  .section {
    padding: 64px 16px;
  }

  .tabs {
    gap: 6px;
  }

  .tabs button {
    font-size: 13px;
    min-height: 68px;
    padding: 8px 6px;
  }

  .tabs button span {
    font-size: 10px;
    margin-top: 4px;
   }

  .scenario-card {
    padding: 24px;
  }

  .review-track article {
    width: 300px;
  }

  .news-list article {
    grid-template-columns: 1fr;
  }

  .safe-grid,
  .footer-cols {
    grid-template-columns: 1fr;
  }
}