* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  color: #16231f;
  background: #fff;
  overflow-x: hidden;
  font:
    15px/1.65 -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    "PingFang SC",
    "Microsoft YaHei",
    sans-serif;
  -webkit-font-smoothing: antialiased;
}
a {
  text-decoration: none;
  color: inherit;
}
.wrap {
  width: min(1180px, calc(100% - 48px));
  margin: auto;
}
.top {
  height: 68px;
  border-bottom: 1px solid rgba(219, 230, 225, 0.9);
  display: flex;
  align-items: center;
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(16px);
  z-index: 20;
}
.top .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
}
.brand-mark {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 9px;
  color: #fff;
  background: #176b55;
  font-size: 13px;
  box-shadow: 0 7px 18px rgba(23, 107, 85, 0.2);
}
.brand span {
  color: #176b55;
}
.nav {
  display: flex;
  align-items: center;
  gap: 26px;
}
.nav a {
  color: #53645e;
  font-size: 14px;
  font-weight: 500;
  transition: 0.18s;
}
.nav a:hover {
  color: #176b55;
}
.nav a.active {
  color: #176b55;
  font-weight: 700;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid #b9c8c2;
  border-radius: 8px;
  padding: 10px 17px;
  font-weight: 600;
  background: #fff;
  transition: 0.18s;
}
.btn:hover {
  border-color: #176b55;
  color: #176b55;
  transform: translateY(-1px);
}
.btn.primary {
  color: #fff;
  background: #176b55;
  border-color: #176b55;
  box-shadow: 0 9px 22px rgba(23, 107, 85, 0.18);
}
.btn.primary:hover {
  color: #fff;
  background: #125a48;
}
.hero {
  position: relative;
  overflow: hidden;
  padding: 90px 0;
  background:
    radial-gradient(
      circle at 80% 22%,
      rgba(105, 190, 153, 0.2),
      transparent 27%
    ),
    linear-gradient(180deg, #f1f8f5 0, #fbfdfc 76%, #fff 100%);
}
.hero:before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(23, 107, 85, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(23, 107, 85, 0.035) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: linear-gradient(to bottom, #000, transparent 82%);
  pointer-events: none;
}
.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.12fr 0.88fr;
  gap: 72px;
  align-items: center;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #176b55;
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.1em;
}
.eyebrow:before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #35a47c;
  box-shadow: 0 0 0 5px rgba(53, 164, 124, 0.12);
}
.hero h1 {
  font-size: 50px;
  line-height: 1.13;
  letter-spacing: -0.045em;
  margin: 16px 0 20px;
  max-width: 720px;
}
.hero h1 span {
  color: #176b55;
}
.hero-copy {
  font-size: 18px;
  color: #566862;
  max-width: 700px;
  margin: 0 0 25px;
}
.cap-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 30px;
}
.cap-pills span {
  padding: 5px 10px;
  border: 1px solid #d3e5dd;
  border-radius: 999px;
  color: #355f51;
  background: rgba(255, 255, 255, 0.72);
  font-size: 12px;
}
.actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 22px;
}
.engine {
  border: 1px solid #cfdfd9;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 28px 70px rgba(26, 75, 60, 0.13);
  overflow: hidden;
}
.engine-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 17px;
  border-bottom: 1px solid #e2ebe7;
  color: #5e706a;
  font-size: 12px;
}
.live {
  display: flex;
  align-items: center;
  gap: 6px;
  color: #176b55;
}
.live:before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #2ba777;
  box-shadow: 0 0 0 5px rgba(43, 167, 119, 0.1);
}
.engine-body {
  padding: 20px;
}
.speaker {
  display: flex;
  gap: 12px;
  align-items: center;
  padding: 14px;
  border: 1px solid #e0e9e5;
  border-radius: 10px;
  background: #f8fbfa;
}
.avatar {
  display: grid;
  place-items: center;
  flex: 0 0 34px;
  height: 34px;
  border-radius: 50%;
  color: #fff;
  background: #176b55;
  font-weight: 700;
}
.speaker b {
  display: block;
  font-size: 13px;
}
.speaker small {
  color: #77857f;
}
.wave {
  height: 58px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  margin: 13px 0 5px;
}
.wave i {
  display: block;
  width: 3px;
  border-radius: 3px;
  background: #56aa89;
  animation: wave 1.05s ease-in-out infinite;
}
.wave i:nth-child(3n) {
  height: 34px;
}
.wave i:nth-child(3n + 1) {
  height: 17px;
  animation-delay: 0.16s;
}
.wave i:nth-child(3n + 2) {
  height: 45px;
  animation-delay: 0.3s;
}
@keyframes wave {
  50% {
    transform: scaleY(0.45);
    opacity: 0.65;
  }
}
.event {
  display: flex;
  gap: 11px;
  align-items: flex-start;
  padding: 12px 13px;
  margin-top: 10px;
  border-radius: 9px;
  background: #edf8f3;
}
.event-icon {
  display: grid;
  place-items: center;
  width: 25px;
  height: 25px;
  border-radius: 7px;
  color: #176b55;
  background: #d9eee5;
  font-weight: 800;
}
.event b {
  display: block;
  font-size: 12px;
  color: #176b55;
}
.event span {
  display: block;
  color: #5b6c66;
  font-size: 12px;
}
.event.warning {
  background: #fff8e8;
}
.event.warning .event-icon {
  color: #8b620c;
  background: #f8e9bd;
}
.event.warning b {
  color: #80590b;
}
.section {
  padding: 82px 0;
}
.section.soft {
  background: #f5f9f7;
}
.section.tint {
  background: #173d32;
  color: #fff;
}
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 28px;
  margin-bottom: 34px;
}
.kicker {
  color: #278267;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.09em;
}
.section h2 {
  font-size: 34px;
  line-height: 1.25;
  margin: 6px 0 0;
  letter-spacing: -0.025em;
}
.lead {
  color: #65756f;
  margin: 0;
  max-width: 610px;
}
.grid {
  display: grid;
  gap: 18px;
}
.grid.three {
  grid-template-columns: repeat(3, 1fr);
}
.grid.four {
  grid-template-columns: repeat(4, 1fr);
}
.card {
  position: relative;
  border: 1px solid #dce7e2;
  border-radius: 12px;
  padding: 25px;
  background: #fff;
  overflow: hidden;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.card:before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, #176b55, #6db99a);
  opacity: 0;
  transition: 0.2s;
}
.card:hover:before {
  opacity: 1;
}
.card-num {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  margin-bottom: 18px;
  border-radius: 9px;
  color: #176b55;
  background: #eaf5f0;
  font-size: 12px;
  font-weight: 800;
}
.card b {
  font-size: 18px;
}
.card p {
  color: #65756f;
  margin: 9px 0 0;
}
.card ul {
  padding: 0;
  margin: 16px 0 0;
  list-style: none;
  color: #52635d;
  font-size: 13px;
}
.card li {
  margin: 7px 0;
}
.card li:before {
  content: "✓";
  color: #258166;
  margin-right: 8px;
  font-weight: 800;
}
.assistant-feature {
  display: grid;
  grid-template-columns: 0.78fr 1.22fr;
  gap: 46px;
  align-items: center;
  padding: 42px;
  border: 1px solid #cfe2da;
  border-radius: 16px;
  background: linear-gradient(125deg, #ecf7f2, #fff);
}
.assistant-feature h2 {
  font-size: 34px;
  margin: 9px 0 15px;
}
.assistant-feature p {
  color: #586b64;
  margin: 0;
}
.assistant-metric {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 23px;
}
.metric {
  padding: 15px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid #d9e8e2;
}
.metric b {
  display: block;
  color: #176b55;
  font-size: 14px;
}
.metric span {
  font-size: 12px;
  color: #71817b;
}
.call-flow {
  padding: 24px;
  border-radius: 13px;
  background: #173d32;
  color: #d9e9e3;
}
.flow-row {
  display: grid;
  grid-template-columns: 34px 1fr auto;
  gap: 12px;
  align-items: center;
  padding: 13px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.flow-row:last-child {
  border: 0;
}
.flow-index {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: rgba(89, 185, 145, 0.18);
  color: #79c8a7;
  font-weight: 700;
}
.flow-row b {
  display: block;
  color: #fff;
  font-size: 13px;
}
.flow-row small {
  color: #9db7ad;
}
.flow-state {
  padding: 3px 8px;
  border-radius: 999px;
  color: #9fe0c4;
  background: rgba(70, 170, 128, 0.15);
  font-size: 11px;
}
.flow-state.stop {
  color: #ffe1a0;
  background: rgba(212, 156, 40, 0.15);
}
.architecture {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 10px;
  align-items: stretch;
  margin-top: 38px;
}
.arch-item {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 116px;
  padding: 14px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.055);
}
.arch-item:not(:last-child):after {
  content: "›";
  position: absolute;
  right: -10px;
  top: 42px;
  color: #7bc4a5;
  font-size: 23px;
  z-index: 2;
}
.arch-item b {
  font-size: 13px;
}
.arch-item span {
  color: #a9c1b8;
  font-size: 11px;
  margin-top: 6px;
}
.tint .kicker {
  color: #76c7a5;
}
.tint .lead {
  color: #b7ccc4;
}
.knowledge-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.knowledge-card {
  padding: 24px 26px;
  border: 1px solid #dce7e2;
  border-radius: 13px;
  background: #fff;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.knowledge-card:hover {
  border-color: #b9d4ca;
  box-shadow: 0 6px 18px rgba(23, 107, 85, 0.06);
}
.knowledge-card h3 {
  font-size: 20px;
  margin: 0 0 8px;
}
.knowledge-card > p {
  color: #65756f;
}
.example {
  margin-top: 18px;
  padding: 16px;
  border-radius: 9px;
  background: #f3f8f6;
  color: #53665f;
  font-size: 13px;
}
.example b {
  color: #176b55;
}
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 17px;
}
.chips span {
  padding: 4px 8px;
  border-radius: 5px;
  background: #eaf4f0;
  color: #28624f;
  font-size: 11px;
}
.scripts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.script {
  padding: 24px;
  border: 1px solid #dce7e2;
  border-radius: 12px;
  background: #fff;
}
.script h3 {
  margin: 0 0 8px;
}
.script p {
  color: #65756f;
}
.script-label {
  display: inline-block;
  margin-bottom: 15px;
  color: #176b55;
  font-size: 11px;
  font-weight: 700;
}
.note {
  margin-top: 22px;
  padding: 14px 17px;
  border-left: 3px solid #2c9471;
  background: #edf7f3;
  color: #556861;
  font-size: 13px;
}
.connect {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 42px;
  align-items: center;
}
.code {
  background: #14261f;
  color: #dcebe5;
  border-radius: 12px;
  padding: 24px;
  overflow: auto;
  font:
    13px/1.8 "SFMono-Regular",
    Consolas,
    monospace;
}
.code .green {
  color: #75d2aa;
}
.cta {
  padding: 56px 0;
  background: #183b31;
  color: #fff;
}
.cta .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 25px;
}
.cta h2 {
  font-size: 28px;
  margin: 0 0 6px;
}
.cta p {
  margin: 0;
  color: #c4d8d0;
}
.cta .btn {
  background: #fff;
  color: #176b55;
  border-color: #fff;
}
.foot {
  padding: 28px 0;
  color: #77847f;
  font-size: 13px;
  border-top: 1px solid #e4ebe8;
}
.foot .wrap {
  display: flex;
  justify-content: space-between;
}
/* Card hover enhancement */
.card:hover {
  border-color: #b9d4ca;
  box-shadow: 0 8px 24px rgba(23, 107, 85, 0.08);
}
@media (max-width: 960px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .hero h1 {
    font-size: 44px;
  }
  .grid.four {
    grid-template-columns: repeat(2, 1fr);
  }
  .assistant-feature {
    grid-template-columns: 1fr;
  }
  .architecture {
    grid-template-columns: repeat(4, 1fr);
  }
  .arch-item:not(:last-child):after {
    display: none;
  }
}
@media (max-width: 720px) {
  .wrap {
    width: min(100% - 30px, 1180px);
  }
  .top {
    height: auto;
  }
  .top .wrap {
    flex-wrap: wrap;
    padding: 8px 0;
    height: auto;
  }
  .nav {
    gap: 4px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    flex: 1 1 100%;
    order: 3;
    padding-bottom: 2px;
  }
  .nav::-webkit-scrollbar {
    display: none;
  }
  .nav > a {
    flex: 0 0 auto;
    padding: 6px 10px;
    font-size: 13px;
  }
  .nav > a.btn {
    flex: 0 0 auto;
  }
  .nav .qj-phone-slot {
    display: none;
  }
  .hero {
    padding: 65px 0;
  }
  .hero h1 {
    font-size: 36px;
  }
  .hero-copy {
    font-size: 16px;
  }
  .section {
    padding: 62px 0;
  }
  .section-head {
    display: block;
  }
  .lead {
    margin-top: 10px;
  }
  .grid.three,
  .grid.four,
  .knowledge-layout,
  .scripts,
  .connect {
    grid-template-columns: 1fr;
  }
  .assistant-feature {
    padding: 25px;
  }
  .assistant-metric {
    grid-template-columns: 1fr;
  }
  .architecture {
    grid-template-columns: repeat(2, 1fr);
  }
  .cta .wrap {
    display: block;
  }
  .cta .btn {
    margin-top: 20px;
  }
  .foot .wrap {
    display: block;
  }
  .foot span {
    display: block;
    margin: 4px 0;
  }
}
/* 产品对比 */
.compare-hero {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 42px;
  align-items: center;
  margin-bottom: 30px;
  padding: 34px;
  border: 1px solid #cfe2da;
  border-radius: 16px;
  background: linear-gradient(135deg, #ecf8f2, #fff);
}
.price-focus {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin: 15px 0 5px;
  color: #176b55;
}
.price-focus strong {
  font-size: 54px;
  line-height: 1;
  font-weight: 800;
  letter-spacing: -0.05em;
}
.price-focus span {
  font-weight: 700;
}
.price-sub {
  color: #63756e;
  font-size: 13px;
}
.cost-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.cost-card {
  padding: 22px;
  border: 1px solid #dbe8e3;
  border-radius: 12px;
  background: #fff;
}
.cost-card.featured {
  color: #fff;
  background: #176b55;
  border-color: #176b55;
  box-shadow: 0 16px 35px rgba(23, 107, 85, 0.18);
}
.cost-card label {
  display: block;
  color: #64756f;
  font-size: 12px;
}
.cost-card.featured label {
  color: #cbe1d8;
}
.cost-card b {
  display: block;
  margin: 5px 0;
  font-size: 25px;
  white-space: nowrap;
}
.cost-card small {
  color: #71827b;
}
.cost-card.featured small {
  color: #d5e7e0;
}
.compare-table-wrap {
  overflow: auto;
  border: 1px solid #dce7e2;
  border-radius: 13px;
  background: #fff;
}
.compare-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 780px;
}
.compare-table th,
.compare-table td {
  padding: 15px 17px;
  border-bottom: 1px solid #e5ece9;
  text-align: left;
  vertical-align: top;
}
.compare-table th {
  background: #f4f8f6;
  color: #52645d;
  font-size: 12px;
}
.compare-table th:first-child,
.compare-table td:first-child {
  width: 150px;
  font-weight: 700;
  color: #263c34;
}
.compare-table th:nth-child(2) {
  color: #176b55;
}
.compare-table tr:last-child td {
  border-bottom: 0;
}
.yes {
  display: inline-block;
  margin-right: 6px;
  color: #176b55;
  font-weight: 800;
}
.tech-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 24px;
}
.tech-item {
  padding: 19px;
  border: 1px solid #dce7e2;
  border-radius: 10px;
  background: #fff;
}
.tech-item b {
  display: block;
  margin-bottom: 6px;
}
.tech-item p {
  margin: 0;
  color: #65756f;
  font-size: 13px;
}
.friend-pricing {
  margin-top: 22px;
  border: 1px solid #dce7e2;
  border-radius: 12px;
  background: #fff;
}
.friend-pricing summary {
  padding: 17px 20px;
  cursor: pointer;
  color: #315548;
  font-weight: 700;
}
.friend-pricing summary::marker {
  color: #176b55;
}
.friend-pricing-body {
  padding: 0 20px 20px;
}
.friend-price-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: #e1e9e6;
  border: 1px solid #e1e9e6;
  border-radius: 8px;
  overflow: hidden;
}
.friend-price-row {
  display: flex;
  justify-content: space-between;
  gap: 15px;
  padding: 10px 13px;
  background: #f9fbfa;
  font-size: 12px;
}
.friend-price-row b {
  white-space: nowrap;
}
.fine-print {
  margin: 15px 0 0;
  color: #75847f;
  font-size: 12px;
}
.highlight-number {
  color: #176b55;
  font-weight: 800;
}
@media (max-width: 960px) {
  .compare-hero {
    grid-template-columns: 1fr;
  }
  .tech-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 720px) {
  .compare-hero {
    padding: 23px;
  }
  .cost-cards,
  .tech-grid,
  .friend-price-grid {
    grid-template-columns: 1fr;
  }
  .price-focus strong {
    font-size: 45px;
  }
  .cost-card b {
    white-space: normal;
  }
}
/* 首页真实语音体验 */
.voice-demo-tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 7px;
  padding: 10px;
  background: #f4f8f6;
  border-bottom: 1px solid #e2ebe7;
}
.voice-demo-tab {
  appearance: none;
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 9px 8px;
  color: #62736d;
  background: transparent;
  font: 600 12px/1.35 inherit;
  cursor: pointer;
  transition: 0.18s;
}
.voice-demo-tab:hover {
  color: #176b55;
  background: #edf6f2;
}
.voice-demo-tab.active {
  color: #176b55;
  background: #fff;
  border-color: #cadfd6;
  box-shadow: 0 3px 10px rgba(23, 107, 85, 0.08);
}
.voice-demo-frame {
  position: relative;
  height: 320px;
  background: #f8fbfa;
}
.voice-demo-frame iframe {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
  background: #f8fbfa;
}
.voice-demo-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 14px;
  border-top: 1px solid #e2ebe7;
  color: #74837e;
  background: #fff;
  font-size: 11px;
}
.voice-demo-foot span:first-child {
  display: flex;
  align-items: center;
  gap: 6px;
}
.voice-demo-foot span:first-child:before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #2ba777;
}
.voice-demo-foot b {
  color: #176b55;
  font-weight: 700;
}
@media (max-width: 720px) {
  .voice-demo-frame {
    height: 330px;
  }
  .voice-demo-tab {
    padding: 8px 5px;
    font-size: 11px;
  }
  .voice-demo-foot {
    align-items: flex-start;
    flex-direction: column;
    gap: 2px;
  }
}

.brand-mark {
  width: 52px;
  height: 52px;
  background: transparent;
  box-shadow: none;
  overflow: hidden;
}
.brand-mark img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
}