:root {
      color-scheme: light;
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
      color: #211f24;
      background: #f8f7f5;
      font-synthesis: none;
      --muted: #57525c;
      --line: #24202926;
      --accent: #354fb0;
      --shell: 1200px;
    }

    *, *::before, *::after { box-sizing: border-box; }

    body {
      margin: 0;
      background:
        radial-gradient(ellipse 750px 660px at 97% 380px, #e9e7f2, transparent),
        radial-gradient(ellipse 760px 620px at 19% 90px, #fffdf8, transparent),
        linear-gradient(180deg, #f5f4f4 0, #f9f7f4 72%, #f7f5f3);
    }

    h1, h2, h3, p, figure { margin: 0; }
    a { color: inherit; }
    img { display: block; max-width: 100%; }
    a:focus-visible { outline: 2px solid var(--accent); outline-offset: 5px; }

    .shell {
      width: min(calc(100% - 96px), var(--shell));
      margin-inline: auto;
    }

    .masthead {
      display: flex;
      min-height: 82px;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid var(--line);
    }

    .wordmark {
      display: flex;
      align-items: center;
      min-height: 44px;
      border-radius: 6px;
    }

    .wordmark img { width: 106px; height: auto; }

    .nav {
      display: flex;
      gap: clamp(18px, 4vw, 44px);
      align-items: center;
      font-size: .875rem;
      font-weight: 500;
    }

    .nav a {
      display: flex;
      align-items: center;
      min-height: 44px;
      text-decoration: none;
    }

    .nav a:hover, .footer a:hover { color: var(--accent); }

    .features {
      padding-block: 8px 64px;
      scroll-margin-top: 22px;
    }

    .section-title {
      margin-bottom: 25px;
      font-size: clamp(1.62rem, 3vw, 2.2rem);
      font-weight: 650;
      line-height: 1.35;
      letter-spacing: -.035em;
    }

    .feature-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
    }

    .feature {
      min-width: 0;
      padding: 25px 27px 27px;
      border: 1px solid #fff;
      border-radius: 25px;
      background: linear-gradient(141deg, #ffffffda, #ffffff67);
      box-shadow: inset 0 0 0 1px #ffffff6e, 0 8px 24px #4d3e5c0d, 0 2px 5px #443d4710;
    }

    .feature-icon {
      display: grid;
      width: 42px;
      height: 42px;
      margin-bottom: 16px;
      place-items: center;
      border: 1px solid #fff;
      border-radius: 13px;
      color: #44405f;
      background: linear-gradient(145deg, #faf9ff, #e7e2ef);
      box-shadow: 0 3px 8px #50466a1c;
    }

    .feature-icon svg { width: 23px; height: 23px; }
    .feature h3 { font-size: 1.09rem; line-height: 1.4; font-weight: 650; }

    .feature p, .about p {
      margin-top: 9px;
      color: var(--muted);
      font-size: .9375rem;
      line-height: 1.8;
    }

    .feature-note {
      margin-top: 17px;
      color: var(--muted);
      font-size: .8125rem;
      line-height: 1.6;
    }

    .about {
      display: grid;
      grid-template-columns: .9fr 1.1fr;
      gap: 20px 40px;
      align-items: center;
      padding-block: 40px 44px;
      border-block: 1px solid var(--line);
      scroll-margin-top: 22px;
    }

    .about-label {
      display: block;
      margin-bottom: 7px;
      color: var(--muted);
      font-size: .875rem;
      line-height: 1.5;
    }

    .about .section-title {
      margin: 0;
      font-size: clamp(1.2rem, 2.28vw, 1.75rem);
      letter-spacing: -.015em;
    }

    .about p { margin: 0; }

    .footer {
      padding: 25px 12px 32px;
      color: var(--muted);
      font-size: .8125rem;
      line-height: 1.65;
      text-align: center;
    }

    .footer a {
      display: inline-flex;
      align-items: center;
      min-height: 44px;
      text-underline-offset: 4px;
    }


[hidden] { display: none !important; }

body {
  background: linear-gradient(180deg, #fbfaf7, #f6f3ef);
}

.showcase { padding-block: 24px 56px; }

.stage {
  position: relative;
  display: grid;
  min-height: clamp(430px, 58vw, 730px);
  align-items: center;
  isolation: isolate;
  border-radius: 34px;
  background: #e1ceba;
  box-shadow: 0 18px 50px #38251b1c;
}

.hero-copy {
  position: relative;
  z-index: 1;
  width: 43%;
  padding: 0 0 5% clamp(26px, 5vw, 74px);
  transition: color .36s ease;
}

.product-label {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  font-size: .8125rem;
  font-weight: 650;
  letter-spacing: .12em;
}

.product-label::before {
  content: "";
  width: 20px;
  height: 2px;
  background: #374ea8;
}

.hero-copy h1 {
  font-size: clamp(2.35rem, 5vw, 4.65rem);
  font-weight: 650;
  letter-spacing: -.04em;
  line-height: 1.16;
}

.hero-lead {
  margin-top: 14px;
  font-size: clamp(1.03rem, 1.8vw, 1.32rem);
  line-height: 1.55;
  font-weight: 500;
}

.scene-art {
  position: absolute;
  z-index: -1;
  inset: 0;
  overflow: hidden;
  isolation: isolate;
  border-radius: inherit;
  box-shadow: inset 0 0 0 1px #ffffff6b;
}

.scene-photo, .scene-shade, .scene-light {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.scene-photo {
  object-fit: cover;
  object-position: center;
  opacity: 0;
  transition: opacity .6s ease;
}

.scene-photo.is-current { opacity: 1; }

.scene-shade {
  background: linear-gradient(90deg, #fff8ecb8 0%, #fff8ec52 33%, transparent 54%);
  transition: background-color .45s ease;
}

[data-scene="evening"] .scene-shade {
  background: linear-gradient(90deg, #271708a6 0%, #29190e38 36%, transparent 58%);
}

[data-scene="evening"] .hero-copy { color: #fff9f1; }
[data-scene="evening"] .product-label::before { background: #f9d9a5; }

.scene-light {
  pointer-events: none;
  background: radial-gradient(ellipse at 55% 45%, #fff0d17a, transparent 68%);
  opacity: 0;
}

.glass {
  position: absolute;
  z-index: 2;
  left: clamp(26px, 5vw, 74px);
  bottom: 10%;
  width: clamp(210px, 25%, 300px);
  padding: 15px 15px 16px;
  color: #292421;
  border: 1px solid #fff9;
  border-radius: 20px;
  background: linear-gradient(145deg, #fffc, #fff7);
  box-shadow: inset 0 1px #fff9, 0 9px 28px #30231925;
  -webkit-backdrop-filter: blur(18px) saturate(1.18);
  backdrop-filter: blur(18px) saturate(1.18);
}

.scene-kicker {
  display: block;
  margin-block: 9px 6px;
  color: #4d3c31;
  font-size: .71875rem;
  font-weight: 650;
  line-height: 1.4;
  letter-spacing: .04em;
}

.scene-text p {
  font-size: .875rem;
  font-weight: 600;
  line-height: 1.6;
}

.scene-signal {
  display: flex;
  align-items: center;
  gap: 4px;
  height: 24px;
  color: #654e6d;
}

.signal-bar {
  width: 3px;
  height: 55%;
  border-radius: 5px;
  background: currentColor;
}

.signal-bar:nth-child(odd) { height: 33%; }
.signal-bar:nth-child(3) { height: 92%; }

[data-scene="evening"] .scene-signal { color: #795038; }
[data-scene="evening"] .signal-bar { width: 12px; height: 17px; border-radius: 3px; opacity: .75; }
[data-scene="evening"] .signal-bar:nth-child(n+4) { display: none; }
[data-scene="evening"] .signal-bar:nth-child(2) { opacity: .5; }
[data-scene="evening"] .signal-bar:nth-child(3) { opacity: .28; }

[data-scene="cabinet"] .scene-signal { color: #626947; }
[data-scene="cabinet"] .signal-bar { width: 11px; height: 13px; border-radius: 4px 4px 3px 3px; }
[data-scene="cabinet"] .signal-bar:nth-child(n+4) { display: none; }
[data-scene="cabinet"] .signal-bar:nth-child(2) { height: 20px; }
[data-scene="cabinet"] .signal-bar:nth-child(3) { height: 16px; }

.is-animating .glass { animation: arrive .48s cubic-bezier(.2,.7,.2,1) both; }
.is-animating .scene-light { animation: catch-light 1.25s ease-out both; }
[data-scene="morning"].is-animating .signal-bar { animation: voice .75s ease-in-out 2 alternate; }
[data-scene="morning"].is-animating .signal-bar:nth-child(2n) { animation-delay: 90ms; }

@keyframes arrive {
  from { opacity: .28; transform: translateY(9px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes catch-light {
  0%, 100% { opacity: 0; }
  28% { opacity: .56; }
}

@keyframes voice {
  0%, 100% { transform: scaleY(1); }
  50% { transform: scaleY(.49); }
}

.scene-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 13px;
  margin-top: 15px;
}

.scene-picker { display: flex; flex-wrap: wrap; gap: 7px; }

.scene-choice, .scene-play {
  display: inline-flex;
  gap: 7px;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 6px 15px;
  border: 1px solid #392b211d;
  border-radius: 999px;
  color: #342c27;
  background: #fff8;
  cursor: pointer;
  font: inherit;
  font-size: .8125rem;
  font-weight: 600;
  line-height: 1.3;
}

.scene-choice span {
  font-size: .72rem;
  opacity: .7;
  font-variant-numeric: tabular-nums;
}

.scene-choice[aria-pressed="true"] {
  color: #fff;
  background: #302720;
  border-color: #302720;
}

.scene-choice:hover:not([aria-pressed="true"]), .scene-play:hover { background: #e9e0d7; }

button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

@media (max-width: 960px) {
  .shell { width: calc(100% - 64px); }
  .glass { padding: 12px; }
}

@media (max-width: 740px) {
  .shell { width: calc(100% - 40px); }
  .masthead { min-height: 64px; }
  .wordmark img { width: 86px; }
  .showcase { padding-block: 29px 36px; }
  .stage {
    grid-template-columns: 1fr;
    gap: 16px;
    min-height: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
  }
  .hero-copy { width: 100%; padding: 0 0 5px; }
  .hero-copy, [data-scene="evening"] .hero-copy { color: #211f24; }
  .product-label { margin-bottom: 11px; }
  [data-scene="evening"] .product-label::before { background: #374ea8; }
  .hero-lead { margin-top: 9px; }
  .scene-art {
    position: relative;
    z-index: 0;
    height: clamp(340px, 107vw, 490px);
    border-radius: 26px;
  }
  .scene-photo { object-position: 72% center; }
  .scene-shade { display: none; }
  .glass {
    position: relative;
    inset: auto;
    display: flex;
    gap: 12px;
    align-items: center;
    width: 100%;
    min-height: 72px;
    padding: 12px 14px;
    margin-top: -5px;
    border-radius: 16px;
    background: linear-gradient(120deg, #fffe, #fff7);
    box-shadow: 0 4px 15px #30231911;
  }
  .scene-signal { flex: 0 0 45px; justify-content: center; }
  .scene-kicker { margin: 0 0 2px; }
  .scene-controls { align-items: stretch; flex-direction: column; }
  .scene-picker { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .scene-choice { padding-inline: 5px; gap: 4px; }
  .scene-play { align-self: flex-end; }
  .feature-grid { grid-template-columns: 1fr; gap: 12px; }
  .feature {
    display: grid;
    grid-template-columns: auto 1fr;
    column-gap: 15px;
    padding: 19px 17px;
    border-radius: 20px;
  }
  .feature-icon { grid-row: span 2; margin-bottom: 0; }
  .feature p { margin-top: 4px; }
  .section-title { margin-bottom: 18px; }
  .features { padding-bottom: 36px; }
  .about { grid-template-columns: 1fr; gap: 13px; padding-block: 26px; }
  .footer { padding-block: 19px 22px; }
}

@media (prefers-reduced-motion: reduce) {
  .hero-copy, .scene-photo, .scene-shade { transition: none; }
  .is-animating .glass, .is-animating .scene-light, [data-scene="morning"].is-animating .signal-bar { animation: none; }
}