:root {
  --text: #1c1c1e;
  --muted: #5c6370;
  --line: rgba(28, 28, 30, 0.12);
  --accent: #0066ff;
  --font: "Noto Sans SC", "Microsoft YaHei UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  font: 16px/1.7 var(--font);
  background: radial-gradient(120% 80% at 10% 0%, #f0f4fc 0%, #dde4f0 48%, #c5d0e2 100%);
  min-height: 100vh;
}
a { color: inherit; text-decoration: none; }
img { display: block; }

.top {
  width: min(1080px, calc(100% - 56px));
  margin: 0 auto;
  padding: 22px 0 0;
  display: flex;
  align-items: center;
  gap: 24px;
}
.nav-links {
  margin-left: auto;
  display: flex;
  gap: 22px;
  font-size: 14px;
  color: var(--muted);
}
.nav-links a:hover { color: var(--text); }
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  font-weight: 700;
}
.logo img { border-radius: 7px; }
.top-btn {
  height: 36px;
  padding: 0 14px;
  display: inline-flex;
  align-items: center;
  color: #fff;
  background: var(--accent);
  border-radius: 10px;
  font-size: 13px;
  font-weight: 600;
}

.mast {
  width: min(1080px, calc(100% - 56px));
  margin: 0 auto;
}
.intro {
  padding: 48px 0 28px;
}
.kicker {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
}
.intro h1 {
  margin: 0;
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -0.04em;
}
.intro p {
  max-width: 38em;
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 16px;
}
.intro-row {
  margin-top: 24px;
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}
.intro-row span { color: var(--muted); font-size: 14px; }
.pills {
  margin: 22px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
}
.pills li {
  height: 30px;
  padding: 0 12px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: rgba(255,255,255,.7);
  border: 1px solid rgba(255,255,255,.85);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
}
.pills i { width: 7px; height: 7px; border-radius: 50%; }

.btn {
  height: 48px;
  padding: 0 22px;
  display: inline-flex;
  align-items: center;
  color: #fff;
  background: var(--accent);
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  box-shadow: 0 8px 18px rgba(0, 102, 255, 0.22);
}

.showroom {
  padding: 0 0 8px;
}
.stage {
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
}
.product-sizer {
  width: 100%;
  max-width: 1080px;
  aspect-ratio: 1080 / 740;
  position: relative;
  overflow: hidden;
  border-radius: 10px;
  box-shadow:
    0 1px 0 rgba(255,255,255,.65) inset,
    0 50px 100px rgba(35, 50, 78, 0.32),
    0 12px 28px rgba(35, 50, 78, 0.14);
}
.product-frame {
  position: absolute;
  top: 0;
  left: 0;
  width: 1080px;
  height: 740px;
  transform-origin: top left;
}
.product-frame iframe {
  display: block;
  border: 0;
  background: transparent;
  pointer-events: none;
}

.steps {
  width: min(1080px, calc(100% - 56px));
  margin: 56px auto 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  list-style: none;
  background: rgba(255, 255, 255, 0.62);
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 16px;
  overflow: hidden;
}
.steps li {
  display: flex;
  gap: 14px;
  padding: 24px 22px;
  border-right: 1px solid rgba(28, 28, 30, 0.08);
}
.steps li:last-child { border-right: 0; }
.steps b {
  width: 28px;
  height: 28px;
  flex: none;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--accent);
  border-radius: 8px;
  font-size: 13px;
}
.steps strong { display: block; margin-bottom: 4px; font-size: 15px; }
.steps span { color: var(--muted); font-size: 13px; }

.scene {
  width: min(1080px, calc(100% - 56px));
  margin: 56px auto 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  align-items: center;
}
.scene-copy h2 {
  margin: 0 0 12px;
  font-size: clamp(24px, 3vw, 32px);
  letter-spacing: -0.03em;
  line-height: 1.25;
}
.scene-copy p { margin: 0; color: var(--muted); }
.block {
  width: min(1080px, calc(100% - 56px));
  margin: 56px auto 0;
}
.block-copy {
  margin-bottom: 20px;
}
.block-copy h2 {
  margin: 0 0 8px;
  font-size: clamp(24px, 3vw, 32px);
  letter-spacing: -0.03em;
}
.block-copy p { margin: 0; color: var(--muted); max-width: 40em; }

.pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.pair article {
  min-height: 232px;
  padding: 14px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: 12px;
}
.pair header { font-size: 13px; font-weight: 600; margin-bottom: 10px; }
.pair ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 4px; }
.pair li {
  height: 32px;
  padding: 0 9px;
  display: flex;
  align-items: center;
  gap: 8px;
  background: #f7f8fa;
  border-radius: 5px;
  font-size: 12px;
  color: #40434a;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}
.pair li i { width: 7px; height: 7px; border-radius: 50%; flex: none; }
.pair .after { box-shadow: inset 0 0 0 1px rgba(0, 102, 255, 0.18); }

.sheet {
  background: #fff;
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: 20px;
  box-shadow: 0 12px 40px rgba(20, 22, 28, 0.18);
  overflow: hidden;
  pointer-events: none;
}
.sheet > header {
  padding: 18px 20px 14px;
  display: flex;
  justify-content: space-between;
  border-bottom: 1px solid rgba(28, 28, 30, 0.08);
}
.sheet h3 { margin: 0; font-size: 17px; }
.sheet header span { display: block; margin-top: 4px; color: var(--muted); font-size: 12px; }
.sheet header em { color: var(--muted); font-style: normal; font-size: 17px; }
.sheet-sum {
  padding: 11px 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  border-bottom: 1px solid rgba(28, 28, 30, 0.08);
}
.sheet-sum span {
  height: 25px;
  padding: 0 9px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #f2f3f5;
  border-radius: 4px;
  font-size: 12px;
}
.sheet-sum i { width: 7px; height: 7px; border-radius: 50%; }
.sheet-files label {
  min-height: 50px;
  padding: 8px 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  border-top: 1px solid rgba(28, 28, 30, 0.06);
  font-size: 12px;
}
.sheet-files button {
  width: 18px;
  height: 18px;
  padding: 0;
  color: #fff;
  background: var(--accent);
  border: 0;
  border-radius: 3px;
  font-size: 11px;
}
.sheet-files span { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.sheet-files b { font-weight: 500; }
.sheet-files small { color: var(--muted); font-size: 11px; }
.sheet-files em {
  color: var(--accent);
  font-style: normal;
  background: rgba(0, 102, 255, 0.08);
  padding: 2px 8px;
  border-radius: 6px;
  font-size: 11px;
}
.sheet-bar {
  padding: 12px 20px 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 12px;
}
.sheet-bar p { margin: 0 auto 0 0; }
.sheet-bar button {
  height: 32px;
  padding: 0 14px;
  border-radius: 10px;
  border: 1px solid rgba(28, 28, 30, 0.08);
  background: rgba(255, 255, 255, 0.8);
  font: inherit;
  font-size: 13px;
  font-weight: 600;
}
.sheet-bar .go { color: #fff; background: var(--accent); border: 0; }

.clean-cards { display: grid; gap: 12px; }
.clean-cards article {
  padding: 16px;
  display: grid;
  gap: 8px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: 16px;
}
.clean-cards b { font-size: 14px; }
.clean-cards b i {
  margin-left: 6px;
  padding: 1px 6px;
  color: var(--accent);
  background: rgba(0, 102, 255, 0.1);
  border-radius: 4px;
  font-size: 10px;
  font-weight: 700;
  font-style: normal;
}
.clean-cards span { color: var(--muted); font-size: 12px; line-height: 1.5; }
.clean-cards button {
  justify-self: start;
  height: 32px;
  padding: 0 12px;
  color: #fff;
  background: var(--accent);
  border: 0;
  border-radius: 8px;
  font: inherit;
  font-size: 12px;
  font-weight: 600;
  pointer-events: none;
}
.clean-cards article:last-child button {
  color: var(--text);
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(28, 28, 30, 0.08);
}

.facts, .split, .bottom, footer {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 28px;
}

.board {
  width: min(1080px, calc(100% - 56px));
  max-width: 1080px;
  margin: 56px auto 0;
  padding: 0 0 8px;
  background: rgba(255, 255, 255, 0.62);
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 16px;
  box-shadow: 0 8px 24px rgba(40, 55, 80, 0.06);
  overflow: hidden;
}

.auto {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 32px;
  padding: 28px;
  border-bottom: 1px solid rgba(28, 28, 30, 0.08);
  background: linear-gradient(180deg, rgba(52, 199, 89, 0.06), transparent 72%);
}
.auto-copy em {
  display: inline-block;
  margin: 0 0 8px;
  padding: 2px 7px;
  color: var(--accent);
  background: rgba(0, 102, 255, 0.1);
  border-radius: 4px;
  font-size: 11px;
  font-weight: 700;
  font-style: normal;
}
.auto-copy h2 {
  margin: 0 0 10px;
  font-size: 26px;
  letter-spacing: -0.03em;
}
.auto-copy p { margin: 0; color: var(--muted); }
.auto-ui {
  align-self: center;
  padding: 14px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: 16px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
}
.auto-row {
  display: flex;
  align-items: center;
  gap: 12px;
}
.auto-icon {
  width: 36px;
  height: 36px;
  flex: none;
  display: grid;
  place-items: center;
  color: #34c759;
  background: rgba(52, 199, 89, 0.1);
  border-radius: 10px;
}
.auto-row b { display: block; font-size: 13px; }
.auto-row small { display: block; margin-top: 3px; color: var(--muted); font-size: 12px; }
.auto-row > div { min-width: 0; flex: 1; }
.fluent-switch {
  width: 46px;
  height: 24px;
  position: relative;
  flex: none;
}
.fluent-switch input { position: absolute; inset: 0; opacity: 0; pointer-events: none; }
.fluent-switch > span {
  display: block;
  width: 46px;
  height: 24px;
  background: #e5e5ea;
  border-radius: 12px;
}
.fluent-switch input:checked + span { background: #0066ff; }
.fluent-switch > span::after {
  content: "";
  position: absolute;
  left: 2px;
  top: 2px;
  width: 20px;
  height: 20px;
  background: #fff;
  border-radius: 50%;
  box-shadow: 0 1px 3px rgba(0,0,0,.16);
}
.fluent-switch input:checked + span::after { transform: translateX(22px); }
.watcher {
  margin-top: 12px;
  padding: 8px 10px;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  background: rgba(255, 149, 0, 0.06);
  border: 1px solid rgba(255, 149, 0, 0.2);
  border-radius: 10px;
  font-size: 12px;
}
.watcher i { width: 6px; height: 6px; border-radius: 50%; background: #ff9500; }
.watcher.on { color: #1c1c1e; background: rgba(52, 199, 89, 0.1); border-color: rgba(52, 199, 89, 0.2); }
.watcher.on i { background: #34c759; }

.feats {
  margin: 0;
  padding: 8px 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  list-style: none;
}
.feats li {
  padding: 20px 28px;
  border-bottom: 1px solid rgba(28, 28, 30, 0.08);
}
.feats li:nth-child(odd) { border-right: 1px solid rgba(28, 28, 30, 0.08); }
.feats b { display: block; margin-bottom: 6px; font-size: 15px; }
.feats b i {
  margin-left: 6px;
  padding: 1px 6px;
  color: var(--accent);
  background: rgba(0, 102, 255, 0.1);
  border-radius: 4px;
  font-size: 10px;
  font-weight: 700;
  font-style: normal;
  vertical-align: 1px;
}
.feats span { color: var(--muted); font-size: 14px; }

.compare {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.compare th, .compare td {
  padding: 14px 28px;
  text-align: left;
  border-bottom: 1px solid rgba(28, 28, 30, 0.08);
  vertical-align: top;
}
.compare thead th {
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.35);
}
.compare tbody th {
  width: 28%;
  font-weight: 600;
  color: var(--text);
}
.compare td { color: var(--muted); }
.compare td:last-child, .compare thead th:last-child { color: var(--text); }

.get {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 28px;
}
.get b { display: block; font-size: 16px; }
.get span { color: var(--muted); font-size: 13px; }
.get .btn { flex: none; min-width: 88px; justify-content: center; }

.faq { padding: 8px 0 20px; }
.faq h2 { margin: 0; padding: 22px 28px 8px; font-size: 22px; letter-spacing: -0.03em; }
.faq details { padding: 0 28px; border-top: 1px solid rgba(28, 28, 30, 0.08); }
.faq summary { cursor: pointer; padding: 16px 0; font-weight: 600; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq details p { margin: 0 0 16px; color: var(--muted); }

footer {
  width: min(1080px, calc(100% - 56px));
  margin: 0 auto;
  padding: 28px 0 40px;
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 13px;
}
footer a:hover { color: var(--accent); }

@media (max-width: 860px) {
  .intro { padding-top: 40px; }
  .nav-links { display: none; }
  .auto, .feats, .scene, .steps, .pair { grid-template-columns: 1fr; }
  .steps li { border-right: 0; border-bottom: 1px solid rgba(28, 28, 30, 0.08); }
  .feats li:nth-child(odd) { border-right: 0; }
  .compare th, .compare td { padding: 12px 18px; }
}