/* ==========================================================================
   羽升智能 · 官网样式（浅色营销版）
   ========================================================================== */

/* ---------------- 导航 ---------------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  transition: height 0.4s var(--ease), background 0.4s ease, border-color 0.4s ease,
    box-shadow 0.4s ease;
  border-bottom: 1px solid transparent;
}

.nav.scrolled {
  height: 64px;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  border-bottom-color: var(--line);
  box-shadow: 0 12px 30px -26px rgba(12, 26, 51, 0.4);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.nav-links { display: flex; align-items: center; gap: 2px; }

.nav-links a {
  padding: 8px 13px;
  font-size: 13.5px;
  color: var(--muted);
  border-radius: 9px;
  transition: color 0.25s, background 0.25s;
}

.nav-links a:hover { color: var(--text); background: rgba(12, 26, 51, 0.045); }
.nav-links a.active { color: var(--c1-ink); font-weight: 500; }
.nav-links a.active::after {
  content: "";
  display: block;
  height: 1px;
  margin-top: 3px;
  background: linear-gradient(90deg, var(--c1), transparent);
}

.nav-actions { display: flex; align-items: center; gap: 10px; }

.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: #fff;
  place-items: center;
  color: var(--text);
  box-shadow: var(--shadow-sm);
}

.nav-toggle span {
  display: block;
  width: 16px; height: 1.5px;
  background: currentColor;
  position: relative;
}
.nav-toggle span::before, .nav-toggle span::after {
  content: "";
  position: absolute; left: 0;
  width: 16px; height: 1.5px;
  background: currentColor;
  transition: 0.3s;
}
.nav-toggle span::before { top: -5px; }
.nav-toggle span::after { top: 5px; }

/* ---------------- Hero ---------------- */
.hero {
  position: relative;
  z-index: 2;
  padding-top: calc(var(--nav-h) + 64px);
  overflow: hidden;
}

#neural {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  opacity: 0.9;
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  align-items: center;
  gap: 48px;
  min-height: min(620px, calc(100vh - 220px));
  padding-bottom: 30px;
}

.hero-copy { max-width: 620px; }

.hero h1 {
  margin-top: 26px;
  font-size: clamp(32px, 4.5vw, 62px);
  line-height: 1.08;
  letter-spacing: -0.035em;
  font-weight: 700;
  color: var(--text);
  text-wrap: balance;
}

.hero h1 .line { display: block; }
.hero h1 .line-1 { animation: heroUp 1s var(--ease) both; }
.hero h1 .line-2 { animation: heroUp 1s 0.12s var(--ease) both; }

@keyframes heroUp {
  from { opacity: 0; transform: translateY(30px); filter: blur(6px); }
  to { opacity: 1; transform: none; filter: none; }
}

.hero .lead {
  margin-top: 26px;
  max-width: 540px;
  font-size: clamp(15px, 1.15vw, 16.5px);
  line-height: 1.9;
  color: var(--muted);
  animation: heroUp 1s 0.22s var(--ease) both;
}

.hero-actions {
  margin-top: 34px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  animation: heroUp 1s 0.3s var(--ease) both;
}

.hero-trust {
  margin-top: 30px;
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 12.5px;
  color: var(--dim);
  animation: heroUp 1s 0.38s var(--ease) both;
}

.hero-trust span { display: inline-flex; align-items: center; gap: 7px; }
.hero-trust svg { width: 14px; height: 14px; color: var(--green); }

/* Hero 右侧：实时通话卡（深色产品界面） */
.hero-visual {
  position: relative;
  z-index: 1;
  perspective: 1400px;
  animation: heroUp 1.1s 0.25s var(--ease) both;
}

.hero-visual::before {
  content: "";
  position: absolute;
  inset: 6% 2% 0 2%;
  background: radial-gradient(circle at 50% 45%, rgba(6, 182, 212, 0.32), rgba(99, 102, 241, 0.22) 45%, transparent 72%);
  filter: blur(52px);
  z-index: -1;
}

.call-card {
  position: relative;
  padding: 20px;
  border-radius: 26px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: linear-gradient(165deg, rgba(19, 27, 44, 0.98), rgba(7, 11, 20, 0.99));
  box-shadow: 0 46px 90px -34px rgba(12, 26, 51, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.08);
  transform: rotateY(-8deg) rotateX(5deg);
  transition: transform 0.6s var(--ease);
  color: #eaf2ff;
}

.call-card:hover { transform: rotateY(-3deg) rotateX(2deg) translateY(-4px); }

.cc-head { display: flex; align-items: center; gap: 12px; }

.cc-avatar {
  width: 44px; height: 44px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: #04121a;
  background: linear-gradient(135deg, #22e1ff, #7b61ff);
  box-shadow: 0 0 24px rgba(34, 225, 255, 0.35);
  flex: none;
}

.cc-head b { display: block; font-size: 13.5px; font-weight: 600; }
.cc-head small { display: block; margin-top: 2px; font-size: 11px; color: #7c8aa0; font-family: var(--font-mono); }

.cc-live {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  border-radius: 999px;
  border: 1px solid rgba(53, 224, 161, 0.35);
  background: rgba(53, 224, 161, 0.1);
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.16em;
  color: #35e0a1;
}

.cc-live i {
  width: 5px; height: 5px;
  border-radius: 50%;
  background: #35e0a1;
  box-shadow: 0 0 8px #35e0a1;
  animation: blink 1.4s ease-in-out infinite;
}

@keyframes blink { 50% { opacity: 0.25; } }

.wave {
  display: flex;
  align-items: center;
  gap: 3px;
  height: 46px;
  margin: 18px 2px 6px;
}

.wave i {
  flex: 1;
  height: 100%;
  border-radius: 2px;
  background: linear-gradient(180deg, #22e1ff, rgba(123, 97, 255, 0.3));
  transform: scaleY(0.3);
  transform-origin: center;
  animation: waveBar 1.1s ease-in-out infinite alternate;
  opacity: 0.75;
}

@keyframes waveBar {
  from { transform: scaleY(0.14); opacity: 0.4; }
  to { transform: scaleY(var(--h, 0.9)); opacity: 1; }
}

.cc-transcript { margin-top: 8px; display: flex; flex-direction: column; gap: 9px; min-height: 128px; }

.t-line {
  display: flex;
  gap: 9px;
  align-items: flex-start;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}

.t-line.show { opacity: 1; transform: none; }

.t-line b {
  flex: none;
  padding: 2px 6px;
  border-radius: 5px;
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: #22e1ff;
  background: rgba(34, 225, 255, 0.1);
  border: 1px solid rgba(34, 225, 255, 0.2);
  margin-top: 2px;
}

.t-line.user b { color: #c3b5ff; background: rgba(123, 97, 255, 0.12); border-color: rgba(123, 97, 255, 0.26); }

.t-line span {
  font-size: 12.5px;
  line-height: 1.65;
  color: #c6d3e6;
}

.t-line.user span { color: #e6ecf7; }

.cc-intent {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
  padding: 11px 13px;
  border-radius: 12px;
  border: 1px solid rgba(34, 225, 255, 0.18);
  background: linear-gradient(100deg, rgba(34, 225, 255, 0.09), rgba(123, 97, 255, 0.05));
}

.cc-intent span:first-child { font-size: 11px; color: #93a4bd; flex: none; }

.cc-intent strong {
  font-family: var(--font-mono);
  font-size: 17px;
  color: #22e1ff;
  line-height: 1;
  text-shadow: 0 0 18px rgba(34, 225, 255, 0.6);
  flex: none;
}

.meter {
  flex: 1;
  height: 4px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

.meter i {
  display: block;
  height: 100%;
  width: 0;
  border-radius: 4px;
  background: linear-gradient(90deg, #22e1ff, #7b61ff);
  box-shadow: 0 0 12px rgba(34, 225, 255, 0.7);
  transition: width 1.2s var(--ease);
}

.cc-intent .score {
  font-family: var(--font-mono);
  font-size: 11px;
  color: #93a4bd;
  flex: none;
}

.cc-foot {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.cc-foot span {
  font-size: 10px;
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
  color: #7c8aa0;
  padding: 4px 8px;
  border-radius: 6px;
  border: 1px solid rgba(255, 255, 255, 0.09);
  background: rgba(255, 255, 255, 0.02);
}

.float-chip {
  position: absolute;
  z-index: 3;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border-radius: 999px;
  font-size: 11.5px;
  white-space: nowrap;
  color: var(--text);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
  box-shadow: 0 18px 40px -20px rgba(12, 26, 51, 0.4);
  animation: floatY 5.5s ease-in-out infinite;
}

.float-chip::before {
  content: "";
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--c1);
  box-shadow: 0 0 8px var(--c1);
}

.float-chip.cyan::before { background: var(--c1); box-shadow: 0 0 8px var(--c1); }
.float-chip.violet::before { background: #7c5cff; box-shadow: 0 0 8px #7c5cff; }
.float-chip.green::before { background: var(--green); box-shadow: 0 0 8px var(--green); }

.float-chip.tl { top: -14px; left: -26px; animation-delay: -1s; }
.float-chip.tr { top: 26%; right: -46px; animation-delay: -2.6s; }
.float-chip.br { bottom: -18px; right: 6%; animation-delay: -3.8s; }

@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-9px); }
}

/* Hero 数据条 */
.hero-stats {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  margin-top: clamp(30px, 5vw, 60px);
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.hero-stats .stat {
  padding: 26px 26px 24px;
  background: #ffffff;
  transition: background 0.4s;
}

.hero-stats .stat:hover { background: #fbfdff; }

.stat .num {
  font-family: var(--font-mono);
  font-size: clamp(26px, 2.6vw, 38px);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1;
  display: flex;
  align-items: baseline;
  gap: 2px;
  color: var(--text);
}

.stat .num em {
  font-style: normal;
  font-size: 0.5em;
  color: var(--c1-ink);
  margin-left: 2px;
}

.stat .cap { margin-top: 10px; font-size: 12.5px; color: var(--muted); }

.scroll-hint {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 26px 0 0;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--dim);
  text-transform: uppercase;
}

.scroll-hint .mouse {
  width: 18px; height: 28px;
  border-radius: 10px;
  border: 1px solid var(--line-strong);
  position: relative;
}
.scroll-hint .mouse::after {
  content: "";
  position: absolute;
  left: 50%; top: 6px;
  width: 2px; height: 5px;
  border-radius: 2px;
  background: var(--c1);
  transform: translateX(-50%);
  animation: scrollDot 1.8s ease-in-out infinite;
}
@keyframes scrollDot {
  0% { opacity: 0; transform: translate(-50%, 0); }
  40% { opacity: 1; }
  100% { opacity: 0; transform: translate(-50%, 8px); }
}

/* ---------------- 产品矩阵 ---------------- */
.prod-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }

.prod-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: clamp(24px, 2.6vw, 34px);
  border-radius: 24px;
  border: 1px solid var(--line);
  background: #ffffff;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform 0.5s var(--ease), border-color 0.5s, box-shadow 0.5s;
  min-height: 0;
}

.prod-card::before {
  content: "";
  position: absolute;
  width: 340px; height: 340px;
  left: -120px; top: -160px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-glow, rgba(6, 182, 212, 0.14)), transparent 66%);
  opacity: 0;
  transition: opacity 0.55s ease;
  pointer-events: none;
}

.prod-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent-line, rgba(6, 182, 212, 0.4));
  box-shadow: var(--shadow-md);
}

.prod-card:hover::before { opacity: 1; }

.prod-card[data-accent="cyan"] { --accent: #0891b2; --accent-glow: rgba(6, 182, 212, 0.16); --accent-line: rgba(6, 182, 212, 0.4); }
.prod-card[data-accent="violet"] { --accent: #5b4bd6; --accent-glow: rgba(99, 102, 241, 0.16); --accent-line: rgba(99, 102, 241, 0.4); }
.prod-card[data-accent="pink"] { --accent: #db2777; --accent-glow: rgba(236, 72, 153, 0.14); --accent-line: rgba(236, 72, 153, 0.38); }
.prod-card[data-accent="green"] { --accent: #059669; --accent-glow: rgba(16, 185, 129, 0.14); --accent-line: rgba(16, 185, 129, 0.38); }
.prod-card[data-accent="amber"] { --accent: #b45309; --accent-glow: rgba(245, 158, 11, 0.16); --accent-line: rgba(245, 158, 11, 0.4); }

.prod-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; }

.prod-icon {
  width: 48px; height: 48px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  color: var(--accent, var(--c1-ink));
  border: 1px solid color-mix(in srgb, var(--accent, var(--c1)) 26%, transparent);
  background: color-mix(in srgb, var(--accent, var(--c1)) 9%, #ffffff);
  flex: none;
}

.prod-icon svg { width: 22px; height: 22px; }

.prod-badge {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.14em;
  color: var(--accent, var(--c1-ink));
  padding: 5px 9px;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--accent, var(--c1)) 24%, transparent);
  background: color-mix(in srgb, var(--accent, var(--c1)) 7%, #ffffff);
  white-space: nowrap;
}

.prod-card h3 { margin-top: 22px; font-size: clamp(19px, 1.7vw, 23px); letter-spacing: -0.01em; }
.prod-card .en {
  display: block;
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.2em;
  color: var(--dim);
}
.prod-card p {
  margin-top: 14px;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 92%;
}
.prod-tags { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 18px; }
.prod-tags span {
  font-size: 11px;
  color: var(--muted);
  padding: 4px 9px;
  border-radius: 6px;
  border: 1px solid var(--line);
  background: var(--surface-2);
}

.prod-link {
  margin-top: auto;
  padding-top: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  color: var(--accent, var(--c1-ink));
  font-weight: 500;
}
.prod-link svg { width: 15px; height: 15px; transition: transform 0.35s var(--ease); }
.prod-card:hover .prod-link svg { transform: translate(3px, -3px); }

/* ---------------- 客户端下载 ---------------- */
.dl-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }

.dl-card {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 156px;
  gap: 28px;
  align-items: center;
  padding: clamp(24px, 2.6vw, 32px);
  border-radius: 24px;
  border: 1px solid var(--line);
  background: #ffffff;
  box-shadow: var(--shadow-sm);
  transition: transform 0.45s var(--ease), box-shadow 0.45s, border-color 0.45s;
}

.dl-card:hover {
  transform: translateY(-4px);
  border-color: rgba(6, 182, 212, 0.32);
  box-shadow: var(--shadow-md);
}

.dl-icon {
  width: 48px; height: 48px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  color: var(--c1-ink);
  border: 1px solid rgba(6, 182, 212, 0.24);
  background: rgba(6, 182, 212, 0.08);
}
.dl-icon svg { width: 22px; height: 22px; }

.dl-card h3 { margin-top: 18px; font-size: clamp(18px, 1.6vw, 21px); letter-spacing: -0.01em; }
.dl-card p { margin-top: 12px; font-size: 12.5px; line-height: 1.8; color: var(--muted); max-width: 92%; }
.dl-sub {
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.16em;
  color: var(--dim);
  text-transform: uppercase;
}

.dl-chips { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 14px; }
.dl-chips span {
  font-size: 11px;
  color: var(--muted);
  padding: 4px 9px;
  border-radius: 6px;
  border: 1px solid var(--line);
  background: var(--surface-2);
}

.dl-actions { margin-top: 20px; display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.dl-link {
  font-size: 12.5px;
  color: var(--c1-ink);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
}
.dl-link svg { width: 14px; height: 14px; }
.dl-link:hover { text-decoration: underline; text-underline-offset: 4px; }

.dl-qr { text-align: center; }
.qr-box {
  width: 156px; height: 156px;
  padding: 12px;
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: var(--shadow-sm);
}
.qr-box svg { width: 100%; height: 100%; display: block; }
.qr-fallback {
  width: 100%; height: 100%;
  display: grid;
  place-items: center;
  padding: 10px;
  font-size: 9px;
  line-height: 1.5;
  color: var(--dim);
  word-break: break-all;
  text-align: center;
}
.dl-qr small { display: block; margin-top: 10px; font-size: 10.5px; color: var(--dim); line-height: 1.5; }

.dl-note {
  margin-top: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 12px;
  color: var(--dim);
  text-align: center;
  flex-wrap: wrap;
}
.dl-note svg { width: 14px; height: 14px; color: var(--c1-ink); flex: none; }

.dl-hint { font-size: 11.5px; color: var(--dim); display: inline-flex; align-items: center; gap: 6px; }

.dl-platforms { display: flex; flex-wrap: wrap; gap: 8px; margin: -16px 0 26px; }
.dl-platforms span {
  font-size: 11px;
  color: var(--muted);
  padding: 5px 11px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #ffffff;
  box-shadow: 0 1px 2px rgba(12, 26, 51, 0.03);
}

/* ---------------- 能力引擎 ---------------- */
.engine-wrap { position: relative; }

.engine-line {
  position: absolute;
  left: 3%; right: 3%;
  top: 58px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(6, 182, 212, 0.35), rgba(99, 102, 241, 0.35), transparent);
  z-index: 0;
}
.engine-line::after {
  content: "";
  position: absolute;
  top: -1px;
  width: 90px; height: 3px;
  border-radius: 3px;
  background: linear-gradient(90deg, transparent, var(--c1), transparent);
  filter: blur(1px);
  animation: travel 6s linear infinite;
}
@keyframes travel {
  from { left: -90px; }
  to { left: 100%; }
}

.engine-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
}

.step {
  position: relative;
  padding: 22px 20px 24px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: #ffffff;
  box-shadow: var(--shadow-sm);
  transition: transform 0.45s var(--ease), border-color 0.45s, box-shadow 0.45s;
}

.step:hover {
  transform: translateY(-5px);
  border-color: rgba(6, 182, 212, 0.35);
  box-shadow: var(--shadow-md);
}

.step .no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px; height: 30px;
  border-radius: 9px;
  border: 1px solid rgba(6, 182, 212, 0.26);
  background: rgba(6, 182, 212, 0.07);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--c1-ink);
}

.step h3 { margin-top: 16px; font-size: 15.5px; }
.step .en {
  display: block;
  margin-top: 5px;
  font-family: var(--font-mono);
  font-size: 8.5px;
  letter-spacing: 0.18em;
  color: var(--dim);
}
.step p { margin-top: 12px; font-size: 12.5px; line-height: 1.75; color: var(--muted); }

.engine-foot {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 26px;
  font-size: 12px;
  color: var(--dim);
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
}
.engine-foot .live-dot {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: #059669;
}
.engine-foot .live-dot i {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 10px var(--green);
  animation: blink 1.6s infinite;
}

/* ---------------- 技术底座 ---------------- */
.tech-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }

.tech-card {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 196px;
  padding: 26px;
  border-radius: 20px;
  border: 1px solid var(--line);
  background: #ffffff;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: border-color 0.45s, transform 0.45s var(--ease), box-shadow 0.45s;
}

.tech-card::after {
  content: "";
  position: absolute;
  right: -40px; bottom: -60px;
  width: 150px; height: 150px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.12), transparent 66%);
  opacity: 0.55;
  transition: opacity 0.45s;
}

.tech-card:hover { border-color: rgba(6, 182, 212, 0.3); transform: translateY(-4px); box-shadow: var(--shadow-md); }
.tech-card:hover::after { opacity: 1; }

.tech-ico {
  width: 38px; height: 38px;
  display: grid;
  place-items: center;
  border-radius: 11px;
  color: var(--c1-ink);
  border: 1px solid rgba(6, 182, 212, 0.22);
  background: rgba(6, 182, 212, 0.06);
}
.tech-ico svg { width: 18px; height: 18px; }

.tech-card h3 { margin-top: 20px; font-size: 15.5px; }
.tech-card p { margin-top: 8px; font-size: 12.5px; line-height: 1.75; color: var(--muted); max-width: 94%; }

.tech-metric {
  margin-top: 20px;
  font-family: var(--font-mono);
  font-size: 21px;
  color: var(--c1-ink);
  letter-spacing: -0.01em;
}

/* ---------------- 行业场景 ---------------- */
.scene-tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }

.scene-tab {
  padding: 9px 17px;
  border-radius: 999px;
  border: 1px solid var(--line);
  font-size: 13px;
  color: var(--muted);
  transition: 0.3s var(--ease);
  background: #ffffff;
  box-shadow: 0 1px 2px rgba(12, 26, 51, 0.03);
}

.scene-tab:hover { color: var(--text); border-color: var(--line-strong); }

.scene-tab.active {
  color: #ffffff;
  font-weight: 600;
  border-color: transparent;
  background: var(--c2);
  background: linear-gradient(135deg, color-mix(in srgb, var(--c1) 80%, #0a1220), var(--c2));
  box-shadow: 0 12px 26px -12px color-mix(in srgb, var(--c1) 65%, transparent);
}

.scene-panel {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(28px, 4vw, 56px);
  padding: clamp(26px, 3.4vw, 46px);
  border-radius: 26px;
  border: 1px solid var(--line);
  background:
    radial-gradient(ellipse at 0% 0%, rgba(6, 182, 212, 0.07), transparent 55%),
    #ffffff;
  box-shadow: var(--shadow-sm);
}

.scene-en {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.22em;
  color: var(--c1-ink);
}
.scene-panel h3 {
  margin-top: 12px;
  font-size: clamp(24px, 2.4vw, 34px);
  letter-spacing: -0.02em;
}

.scene-block { margin-top: 26px; padding-left: 16px; border-left: 1px solid var(--line-strong); }
.scene-block.pain { border-left-color: rgba(236, 72, 153, 0.45); }
.scene-block.solution { border-left-color: rgba(6, 182, 212, 0.55); }
.scene-block b {
  display: block;
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.2em;
  color: var(--dim);
  margin-bottom: 7px;
}
.scene-block p { font-size: 13.5px; line-height: 1.8; color: #3c4b62; }

.scene-left { display: flex; flex-direction: column; }
.scene-right { display: flex; flex-direction: column; gap: 22px; }

.scene-cta {
  margin-top: auto;
  padding-top: 30px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--c1-ink);
  align-self: flex-start;
}
.scene-cta svg { width: 15px; height: 15px; transition: transform 0.35s var(--ease); }
.scene-cta:hover svg { transform: translateX(4px); }

.scene-metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }

.scene-metrics div {
  padding: 18px 14px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--surface-2);
  text-align: center;
}
.scene-metrics strong {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(19px, 1.8vw, 24px);
  font-weight: 500;
  color: var(--c1-ink);
}
.scene-metrics span { display: block; margin-top: 6px; font-size: 11px; color: var(--dim); }

.flow { display: flex; flex-direction: column; gap: 0; }

.flow-item {
  display: flex;
  align-items: center;
  gap: 13px;
  padding: 10px 0;
  position: relative;
}

.flow-item:not(:last-child)::before {
  content: "";
  position: absolute;
  left: 13px; top: 30px;
  width: 1px; height: calc(100% - 18px);
  background: linear-gradient(180deg, rgba(6, 182, 212, 0.4), rgba(99, 102, 241, 0.12));
}

.flow-dot {
  width: 27px; height: 27px;
  flex: none;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--c1-ink);
  border: 1px solid rgba(6, 182, 212, 0.35);
  background: #ffffff;
  position: relative;
  z-index: 1;
}
.flow-item:last-child .flow-dot {
  color: #ffffff;
  background: var(--c2);
  background: linear-gradient(135deg, color-mix(in srgb, var(--c1) 80%, #0a1220), var(--c2));
  border-color: transparent;
}
.flow-item span { font-size: 12.5px; color: var(--muted); }
.flow-item:last-child span { color: var(--text); }

/* ---------------- 实时看板（深色产品界面） ---------------- */
.dash-shell {
  display: grid;
  grid-template-columns: 196px 1fr;
  border-radius: 26px;
  overflow: hidden;
  border: 1px solid rgba(12, 26, 51, 0.12);
  background: linear-gradient(170deg, #080d17, #050810);
  box-shadow: var(--shadow-lg);
  color: #eaf2ff;
}

.dash-side {
  padding: 20px 14px;
  border-right: 1px solid rgba(255, 255, 255, 0.09);
  background: rgba(255, 255, 255, 0.015);
}

.dash-side .ds-logo { display: flex; align-items: center; gap: 9px; padding: 6px 8px 20px; }
.dash-side .ds-logo .logo-mark { width: 26px; height: 26px; }
.dash-side .ds-logo .logo-mark .ring2 { inset: 5px; }
.dash-side .ds-logo .logo-mark .core { inset: 9.5px; }
.dash-side .ds-logo b { font-size: 12px; font-weight: 600; letter-spacing: 0.02em; }

.ds-item {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 8px 10px;
  border-radius: 8px;
  font-size: 11.5px;
  color: #61718a;
  margin-bottom: 2px;
}
.ds-item svg { width: 14px; height: 14px; }
.ds-item.active { color: #22e1ff; background: rgba(34, 225, 255, 0.08); }
.ds-item.active::after {
  content: "";
  margin-left: auto;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: #22e1ff;
  box-shadow: 0 0 8px #22e1ff;
}

.dash-main { padding: clamp(16px, 2vw, 24px); min-width: 0; }

.dash-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}
.dash-top h4 { font-size: 13.5px; font-weight: 600; color: #eaf2ff; }
.dash-top .dt-sub { font-size: 10.5px; color: #61718a; font-family: var(--font-mono); margin-top: 3px; }
.dash-top .dt-live {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--font-mono); font-size: 9.5px; letter-spacing: 0.12em;
  color: #35e0a1;
  padding: 5px 9px; border-radius: 999px;
  border: 1px solid rgba(53, 224, 161, 0.3);
  background: rgba(53, 224, 161, 0.08);
}
.dash-top .dt-live i { width: 5px; height: 5px; border-radius: 50%; background: #35e0a1; box-shadow: 0 0 8px #35e0a1; animation: blink 1.5s infinite; }

.kpi-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }

.kpi {
  padding: 13px 14px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.09);
  background: rgba(255, 255, 255, 0.025);
}
.kpi span { display: block; font-size: 10.5px; color: #61718a; }
.kpi strong {
  display: block;
  margin-top: 7px;
  font-family: var(--font-mono);
  font-size: clamp(15px, 1.4vw, 19px);
  font-weight: 500;
  letter-spacing: -0.01em;
  color: #eaf2ff;
}
.kpi em {
  display: inline-block;
  margin-top: 6px;
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 9.5px;
  color: #35e0a1;
}
.kpi em.down { color: #ffc46b; }

.chart-box { margin-top: 14px; padding: 16px; border-radius: 14px; border: 1px solid rgba(255, 255, 255, 0.09); background: rgba(255, 255, 255, 0.015); }
.chart-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 8px; }
.chart-head b { font-size: 11.5px; font-weight: 500; color: #93a4bd; }
.chart-head span { font-family: var(--font-mono); font-size: 9.5px; color: #61718a; }
.chart-box svg { width: 100%; height: auto; overflow: visible; }

.dash-bottom { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 12px; margin-top: 12px; }

.intent-box, .feed-box {
  padding: 15px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.09);
  background: rgba(255, 255, 255, 0.015);
}
.box-title { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.box-title b { font-size: 11.5px; font-weight: 500; color: #93a4bd; }
.box-title span { font-family: var(--font-mono); font-size: 9px; color: #61718a; }

.intent-row { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; font-size: 10.5px; }
.intent-row .lv {
  width: 26px; flex: none;
  font-family: var(--font-mono);
  color: var(--tone, #22e1ff);
  font-size: 10px;
}
.intent-row .bar { flex: 1; height: 5px; border-radius: 4px; background: rgba(255, 255, 255, 0.06); overflow: hidden; }
.intent-row .bar i {
  display: block; height: 100%; width: 0;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--tone, #22e1ff), color-mix(in srgb, var(--tone, #22e1ff) 40%, transparent));
  transition: width 1.1s var(--ease);
  box-shadow: 0 0 10px color-mix(in srgb, var(--tone, #22e1ff) 50%, transparent);
}
.intent-row .val { width: 34px; text-align: right; font-family: var(--font-mono); font-size: 9.5px; color: #61718a; }

.feed-item { display: flex; align-items: center; gap: 9px; padding: 6px 0; border-bottom: 1px dashed rgba(255, 255, 255, 0.05); }
.feed-item:last-child { border-bottom: 0; }
.feed-avatar {
  width: 24px; height: 24px; flex: none;
  border-radius: 7px;
  display: grid; place-items: center;
  font-size: 9.5px;
  color: var(--tone, #22e1ff);
  border: 1px solid color-mix(in srgb, var(--tone, #22e1ff) 28%, transparent);
  background: color-mix(in srgb, var(--tone, #22e1ff) 9%, transparent);
}
.feed-meta { min-width: 0; flex: 1; }
.feed-meta b { display: block; font-size: 10.5px; font-weight: 500; color: #eaf2ff; }
.feed-meta span { display: block; font-size: 9px; color: #61718a; margin-top: 1px; }
.feed-state { font-size: 9px; font-family: var(--font-mono); color: var(--tone, #22e1ff); white-space: nowrap; }
.feed-time { font-family: var(--font-mono); font-size: 9px; color: #61718a; width: 30px; text-align: right; }

/* ---------------- 客户案例 ---------------- */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }

.case-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 28px;
  border-radius: 22px;
  border: 1px solid var(--line);
  background: #ffffff;
  box-shadow: var(--shadow-sm);
  transition: transform 0.45s var(--ease), border-color 0.45s, box-shadow 0.45s;
}
.case-card:hover { transform: translateY(-5px); border-color: rgba(6, 182, 212, 0.28); box-shadow: var(--shadow-md); }

.case-card .quote-mark {
  font-family: Georgia, serif;
  font-size: 46px;
  line-height: 0.8;
  color: rgba(6, 182, 212, 0.35);
  height: 26px;
}

.case-card blockquote {
  margin-top: 14px;
  font-size: 13.5px;
  line-height: 1.85;
  color: #2f3e55;
  flex: 1;
}

.case-metrics { display: flex; gap: 18px; margin-top: 22px; padding-top: 18px; border-top: 1px solid var(--line); }
.case-metrics strong { display: block; font-family: var(--font-mono); font-size: 17px; font-weight: 500; color: var(--c1-ink); }
.case-metrics span { display: block; margin-top: 3px; font-size: 10px; color: var(--dim); }

.case-person { display: flex; align-items: center; gap: 10px; margin-top: 20px; }
.case-avatar {
  width: 34px; height: 34px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 12px;
  color: #ffffff;
  background: var(--c2);
  background: linear-gradient(135deg, color-mix(in srgb, var(--c1) 80%, #0a1220), var(--c2));
  font-weight: 600;
  flex: none;
}
.case-person b { display: block; font-size: 12px; font-weight: 500; }
.case-person div span { display: block; font-size: 10.5px; color: var(--dim); margin-top: 1px; }

/* ---------------- 定价 ---------------- */
.price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; align-items: stretch; }

.price-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 30px 28px;
  border-radius: 24px;
  border: 1px solid var(--line);
  background: #ffffff;
  box-shadow: var(--shadow-sm);
  transition: transform 0.45s var(--ease), border-color 0.45s, box-shadow 0.45s;
}

.price-card:hover { transform: translateY(-5px); border-color: var(--line-strong); box-shadow: var(--shadow-md); }

.price-card.featured {
  border-color: rgba(6, 182, 212, 0.42);
  background:
    radial-gradient(ellipse at 50% 0%, rgba(6, 182, 212, 0.1), transparent 62%),
    linear-gradient(170deg, #ffffff, #f8fdff);
  box-shadow: 0 30px 70px -38px rgba(6, 182, 212, 0.55);
  transform: translateY(-8px);
}
.price-card.featured:hover { transform: translateY(-12px); }

.price-badge {
  position: absolute;
  top: -11px; left: 50%;
  transform: translateX(-50%);
  padding: 4px 13px;
  border-radius: 999px;
  background: var(--c2);
  background: linear-gradient(135deg, color-mix(in srgb, var(--c1) 80%, #0a1220), var(--c2));
  color: #ffffff;
  font-size: 10.5px;
  font-weight: 600;
  white-space: nowrap;
}

.price-card .plan-en { font-family: var(--font-mono); font-size: 9px; letter-spacing: 0.22em; color: var(--dim); }
.price-card h3 { margin-top: 10px; font-size: 20px; }
.price-card .desc { margin-top: 10px; font-size: 12.5px; line-height: 1.7; color: var(--muted); min-height: 42px; }

.price-line { display: flex; align-items: baseline; gap: 6px; margin-top: 22px; }
.price-line b { font-family: var(--font-mono); font-size: clamp(30px, 3vw, 40px); font-weight: 500; letter-spacing: -0.03em; color: var(--text); }
.price-line span { font-size: 12px; color: var(--dim); }

.price-features { margin-top: 24px; display: flex; flex-direction: column; gap: 11px; flex: 1; }
.price-features li { display: flex; gap: 9px; align-items: flex-start; font-size: 12.5px; color: #3c4b62; }
.price-features svg { width: 15px; height: 15px; flex: none; margin-top: 2px; color: var(--c1-ink); }

.price-card .btn { margin-top: 26px; }

.price-note {
  margin-top: 26px;
  text-align: center;
  font-size: 12px;
  color: var(--dim);
}

/* ---------------- FAQ ---------------- */
.faq-list { max-width: 900px; margin: 0; border-top: 1px solid var(--line); }

.faq-item { border-bottom: 1px solid var(--line); }

.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 24px 4px;
  text-align: left;
  font-size: clamp(14.5px, 1.25vw, 16.5px);
  font-weight: 500;
  color: var(--text);
  transition: color 0.3s;
}
.faq-q:hover { color: var(--c1-ink); }

.faq-q .sign {
  position: relative;
  width: 26px; height: 26px;
  flex: none;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  transition: 0.4s var(--ease);
  background: #ffffff;
}
.faq-q .sign::before, .faq-q .sign::after {
  content: "";
  position: absolute;
  left: 50%; top: 50%;
  width: 10px; height: 1.5px;
  background: currentColor;
  transform: translate(-50%, -50%);
  transition: 0.4s var(--ease);
}
.faq-q .sign::after { transform: translate(-50%, -50%) rotate(90deg); }

.faq-item.open .faq-q { color: var(--c1-ink); }
.faq-item.open .sign { border-color: rgba(6, 182, 212, 0.5); background: rgba(6, 182, 212, 0.08); transform: rotate(180deg); }
.faq-item.open .sign::after { transform: translate(-50%, -50%) rotate(0deg); }

.faq-a {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.45s var(--ease);
}
.faq-item.open .faq-a { grid-template-rows: 1fr; }
.faq-a > div { overflow: hidden; }
.faq-a p {
  padding: 0 40px 26px 4px;
  font-size: 13.5px;
  line-height: 1.9;
  color: var(--muted);
  max-width: 780px;
}

/* ---------------- CTA（深色收尾） ---------------- */
.cta-band {
  position: relative;
  z-index: 2;
  overflow: hidden;
  border-radius: 32px;
  border: 1px solid rgba(6, 182, 212, 0.3);
  background:
    radial-gradient(ellipse at 50% -20%, rgba(6, 182, 212, 0.32), transparent 58%),
    radial-gradient(ellipse at 82% 120%, rgba(99, 102, 241, 0.3), transparent 55%),
    linear-gradient(170deg, #0b1424, #05080f);
  padding: clamp(46px, 6.5vw, 84px) clamp(24px, 5vw, 72px);
  text-align: center;
  box-shadow: 0 50px 120px -60px rgba(6, 182, 212, 0.55);
  color: #eaf2ff;
}

.cta-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 70% 80% at 50% 50%, #000, transparent 72%);
  -webkit-mask-image: radial-gradient(ellipse 70% 80% at 50% 50%, #000, transparent 72%);
  pointer-events: none;
}

.cta-band > * { position: relative; }

.cta-band .eyebrow { color: #7fe9ff; }

.cta-band h2 {
  margin-top: 20px;
  font-size: clamp(28px, 3.6vw, 52px);
  line-height: 1.12;
  letter-spacing: -0.03em;
  color: #ffffff;
  text-wrap: balance;
}

.cta-band p {
  margin: 20px auto 0;
  max-width: 620px;
  font-size: 14.5px;
  line-height: 1.85;
  color: #93a4bd;
  text-wrap: balance;
}

.cta-actions { margin-top: 32px; display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; }

.cta-band .btn-ghost {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.24);
  color: #ffffff;
  box-shadow: none;
}
.cta-band .btn-ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.45);
  color: #ffffff;
}

.cta-points {
  margin-top: 28px;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 22px;
  font-size: 11.5px;
  color: #7c8aa0;
}
.cta-points span { display: inline-flex; align-items: center; gap: 7px; }
.cta-points svg { width: 14px; height: 14px; color: #35e0a1; }

/* ---------------- 页脚 ---------------- */
.footer {
  position: relative;
  z-index: 2;
  margin-top: clamp(60px, 8vw, 110px);
  border-top: 1px solid var(--line);
  background: #ffffff;
  padding: clamp(46px, 6vw, 70px) 0 30px;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: 40px;
}

.footer-brand p {
  margin-top: 18px;
  max-width: 300px;
  font-size: 12.5px;
  line-height: 1.85;
  color: var(--muted);
}

.footer-contact { margin-top: 22px; display: flex; flex-direction: column; gap: 9px; }
.footer-contact a, .footer-contact span {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 12.5px;
  color: var(--muted);
  transition: color 0.25s;
}
.footer-contact a:hover { color: var(--c1-ink); }
.footer-contact svg { width: 14px; height: 14px; color: var(--dim); flex: none; }

.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.22em;
  color: var(--dim);
  font-weight: 400;
  text-transform: uppercase;
}
.footer-col ul { margin-top: 18px; display: flex; flex-direction: column; gap: 11px; }
.footer-col a { font-size: 12.5px; color: var(--muted); transition: color 0.25s, transform 0.25s; display: inline-block; }
.footer-col a:hover { color: var(--text); transform: translateX(3px); }

.footer-bottom {
  margin-top: clamp(36px, 5vw, 56px);
  padding-top: 22px;
  border-top: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 11.5px;
  color: var(--dim);
}
.footer-bottom .fb-links { display: flex; gap: 18px; }
.footer-bottom a:hover { color: var(--muted); }

/* ---------------- 演示表单 ---------------- */
.demo-head { text-align: center; margin-bottom: 24px; }
.demo-head h3 { font-size: 22px; letter-spacing: -0.01em; }
.demo-head p { margin-top: 8px; font-size: 12.5px; color: var(--muted); }
.demo-form { display: grid; grid-template-columns: 1fr 1fr; gap: 0 12px; }
.demo-form .field.full { grid-column: 1 / -1; }
.demo-note { margin-top: 4px; font-size: 11px; color: var(--dim); text-align: center; }

/* ---------------- 产品详情 / 界面预览 ---------------- */
.prod-mock {
  margin-top: 20px;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--surface-2);
}

.prod-feats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 14px;
  margin-top: 18px;
}
.prod-feats li {
  display: flex;
  gap: 7px;
  align-items: flex-start;
  font-size: 12px;
  color: var(--muted);
  line-height: 1.6;
}
.prod-feats svg {
  width: 14px; height: 14px;
  flex: none;
  margin-top: 2px;
  color: var(--accent, var(--c1-ink));
}

.prod-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  flex-wrap: wrap;
}
.prod-act {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--muted);
  transition: color 0.25s;
}
.prod-act:hover { color: var(--accent, var(--c1-ink)); }
.prod-act svg { width: 14px; height: 14px; }

.prod-featured {
  grid-column: 1 / -1;
  padding: clamp(26px, 3vw, 40px);
}
.prod-feat-grid {
  display: grid;
  grid-template-columns: 0.96fr 1.04fr;
  gap: clamp(26px, 3.6vw, 48px);
  align-items: center;
}
.prod-feat-copy h3 { margin-top: 22px; font-size: clamp(24px, 2.4vw, 32px); letter-spacing: -0.02em; }
.prod-feat-copy p { max-width: 100%; font-size: 13.5px; }
.prod-feat-visual { min-width: 0; }

.prod-metrics {
  display: flex;
  gap: clamp(20px, 2.6vw, 34px);
  margin-top: 22px;
}
.prod-metrics b {
  display: block;
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--accent, var(--c1-ink));
}
.prod-metrics span { display: block; margin-top: 4px; font-size: 10.5px; color: var(--dim); }

/* 迷你界面 */
.ui { font-size: 9px; line-height: 1.4; background: #f7f9fd; color: #2b3a50; }
.ui-top {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 10px;
  background: #fff;
  border-bottom: 1px solid rgba(12, 26, 51, 0.07);
}
.ui-dots { display: flex; gap: 3px; }
.ui-dots i { width: 5px; height: 5px; border-radius: 50%; background: #dbe3ee; }
.ui-dots i:first-child { background: #ffd0d0; }
.ui-dots i:nth-child(2) { background: #ffe6bf; }
.ui-dots i:nth-child(3) { background: #c9f2d9; }
.ui-title {
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.06em;
  color: #8494a9;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.ui-main { display: grid; grid-template-columns: 84px 1fr; min-height: 150px; }
.ui-side {
  padding: 8px 6px;
  background: #fff;
  border-right: 1px solid rgba(12, 26, 51, 0.06);
  display: flex; flex-direction: column; gap: 2px;
}
.ui-side span {
  padding: 4px 6px;
  border-radius: 4px;
  font-size: 7.5px;
  color: #8494a9;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.ui-side span.on {
  color: var(--accent, #0e7490);
  background: color-mix(in srgb, var(--accent, #06b6d4) 10%, #fff);
}
.ui-content { padding: 8px; display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.ui-kpis { display: grid; grid-template-columns: repeat(3, 1fr); gap: 5px; }
.ui-kpis div {
  background: #fff;
  border: 1px solid rgba(12, 26, 51, 0.06);
  border-radius: 5px;
  padding: 5px 6px;
  min-width: 0;
}
.ui-kpis b {
  display: block;
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 500;
  color: #0a1220;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.ui-kpis span { display: block; font-size: 6.5px; color: #8494a9; margin-top: 1px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ui-chart {
  display: flex; align-items: flex-end; gap: 3px;
  height: 38px;
  padding: 5px 6px;
  background: #fff;
  border: 1px solid rgba(12, 26, 51, 0.06);
  border-radius: 5px;
}
.ui-chart i {
  flex: 1;
  border-radius: 2px 2px 0 0;
  background: linear-gradient(180deg, var(--accent, #06b6d4), color-mix(in srgb, var(--accent, #06b6d4) 28%, #fff));
  opacity: 0.9;
}
.ui-list { display: flex; flex-direction: column; gap: 3px; }
.ui-list > div {
  display: flex; align-items: center; gap: 5px;
  background: #fff;
  border: 1px solid rgba(12, 26, 51, 0.06);
  border-radius: 5px;
  padding: 4px 6px;
  min-width: 0;
}
.ui-dot { width: 5px; height: 5px; border-radius: 50%; flex: none; background: #06b6d4; }
.ui-dot.green { background: #10b981; }
.ui-dot.amber { background: #f59e0b; }
.ui-dot.violet { background: #8b5cf6; }
.ui-list b { font-size: 7.5px; font-weight: 600; color: #0a1220; white-space: nowrap; }
.ui-list span { font-size: 6.5px; color: #8494a9; flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ui-list em { font-style: normal; font-size: 6.5px; color: var(--accent, #0e7490); white-space: nowrap; }

.ui-lg .ui-main { grid-template-columns: 112px 1fr; min-height: 264px; }
.ui-lg .ui-content { padding: 11px; gap: 8px; }
.ui-lg .ui-kpis b { font-size: 12px; }
.ui-lg .ui-kpis span { font-size: 7px; }
.ui-lg .ui-chart { height: 64px; }
.ui-lg .ui-list > div { padding: 6px 7px; }
.ui-lg .ui-list b { font-size: 8.5px; }
.ui-lg .ui-list span, .ui-lg .ui-list em { font-size: 7.5px; }
.ui-lg .ui-side span { font-size: 8px; }

.prod-shot {
  position: relative;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: #fff;
  box-shadow: var(--shadow-sm);
}
.prod-shot img {
  width: 100%;
  display: block;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  object-position: top center;
}
.prod-shot-tag {
  position: absolute;
  left: 10px; bottom: 10px;
  padding: 4px 8px;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.08em;
  color: #fff;
  background: rgba(10, 18, 32, 0.55);
  backdrop-filter: blur(6px);
}

/* ---------------- 微信弹窗 ---------------- */
.wechat-card { width: min(560px, 100%); }
.wechat-body {
  display: grid;
  grid-template-columns: 168px 1fr;
  gap: 26px;
  align-items: center;
}
.wechat-qr { text-align: center; }
.wechat-qr img,
.wechat-qr svg {
  width: 168px;
  height: 168px;
  padding: 10px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: var(--shadow-sm);
  margin: 0 auto;
}
.wechat-qr small { display: block; margin-top: 9px; font-size: 10.5px; color: var(--dim); }
.wechat-label { display: block; font-size: 10.5px; color: var(--dim); letter-spacing: 0.08em; }
.wechat-info strong {
  display: block;
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 24px;
  letter-spacing: -0.01em;
  color: var(--text);
}
}
.wechat-actions { display: flex; gap: 8px; margin-top: 16px; flex-wrap: wrap; }
.wechat-note { margin-top: 14px; font-size: 11.5px; color: var(--muted); line-height: 1.7; }

/* ---------------- 响应式 ---------------- */
@media (max-width: 1120px) {
  .nav-links { display: none; }
  .nav-toggle { display: grid; }
  .hero-inner { grid-template-columns: 1fr; gap: 56px; min-height: 0; padding-top: 20px; }
  .hero-copy { max-width: 720px; }
  .hero-visual { max-width: 560px; }
  .engine-grid { grid-template-columns: repeat(3, 1fr); }
  .engine-line { display: none; }
  .tech-grid { grid-template-columns: repeat(2, 1fr); }
  .case-grid { grid-template-columns: 1fr; }
  .price-grid { grid-template-columns: 1fr; }
  .price-card.featured { transform: none; }
  .price-card.featured:hover { transform: translateY(-5px); }
  .dash-shell { grid-template-columns: 1fr; }
  .dash-side { display: none; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .dl-grid { grid-template-columns: 1fr; }
}

@media (max-width: 860px) {
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .prod-grid { grid-template-columns: 1fr; }
  .prod-feat-grid { grid-template-columns: 1fr; }
  .prod-feat-visual { order: 2; }
  .scene-panel { grid-template-columns: 1fr; }
  .dash-bottom { grid-template-columns: 1fr; }
  .kpi-row { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .nav-actions #navCta2 { display: none; }
  .engine-grid { grid-template-columns: 1fr; }
  .tech-grid { grid-template-columns: 1fr; }
  .hero-stats .stat { padding: 20px 16px; }
  .float-chip.tl { left: -8px; top: -18px; }
  .float-chip.tr { right: -8px; }
  .float-chip.br { right: -6px; }
  .call-card { transform: none; }
  .demo-form { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; gap: 30px; }
  .case-metrics { gap: 14px; }
  .dl-card { grid-template-columns: 1fr; gap: 22px; }
  .dl-qr { justify-self: center; }
  .dl-actions { justify-content: flex-start; }
  .prod-feats { grid-template-columns: 1fr; }
  .wechat-body { grid-template-columns: 1fr; gap: 20px; }
  .wechat-info { text-align: center; }
  .wechat-actions { justify-content: center; }
  .ui-side { display: none; }
  .ui-main { grid-template-columns: 1fr; }
}

/* 移动端导航抽屉 */
@media (max-width: 520px) {
  .nav-actions #navCta { display: none; }
  .nav-actions { gap: 0; }
}

.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: 99;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(20px);
  padding: 100px 24px 40px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s ease, visibility 0.35s;
}
.mobile-nav.open { opacity: 1; visibility: visible; }
.mobile-nav a {
  padding: 16px 4px;
  font-size: 18px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
}
.mobile-nav a:active { color: var(--c1-ink); }
.mobile-nav .btn { margin-top: 22px; color: #fff; }