:root {
  --brand: #0b68ff;
  --brand-2: #2e7bff;
  --brand-soft: #eaf2ff;
  --brand-pale: #f5f8ff;
  --ink: #0d1d3a;
  --ink-2: #283858;
  --muted: #71809a;
  --line: #dde6f4;
  --surface: #ffffff;
  --surface-alt: #f2f5f9;
  --shadow: 0 24px 70px rgba(21, 60, 126, 0.1);
  --shadow-soft: 0 12px 36px rgba(25, 57, 112, 0.08);
  --radius: 24px;
  --header-h: 80px;
  --container: 1360px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 24px);
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--surface);
  font-family:
    Inter, "SF Pro Display", "PingFang SC", "Microsoft YaHei",
    system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body.menu-open {
  overflow: hidden;
}

::selection {
  color: #fff;
  background: var(--brand);
}

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

button,
input {
  font: inherit;
}

button {
  color: inherit;
}

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

.container {
  width: min(calc(100% - 40px), var(--container));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 12px;
  left: 12px;
  padding: 10px 16px;
  color: #fff;
  background: var(--ink);
  border-radius: 10px;
  transform: translateY(-150%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: fixed;
  z-index: 100;
  inset: 0 0 auto;
  height: var(--header-h);
  background: rgba(255, 255, 255, 0.86);
  border-bottom: 1px solid rgba(211, 222, 240, 0.7);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  transition:
    box-shadow 0.3s ease,
    background 0.3s ease;
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 10px 32px rgba(29, 53, 94, 0.08);
}

.nav-wrap {
  width: min(calc(100% - 80px), 1760px);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  min-width: max-content;
  line-height: 0;
}

.brand-logo {
  display: block;
  width: auto;
  height: 80px;
  object-fit: contain;
}

.site-footer .brand-logo {
  height: 92px;
  /* 源图左侧含透明留白，抵消后使可见 Logo 与说明文字左边线对齐。 */
  margin-left: -15px;
}

.header-brand {
  margin-left: clamp(0px, 4.58vw, 88px);
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(32px, 4vw, 76px);
  margin-left: clamp(50px, 13.49vw, 259px);
}

@media (min-width: 1200px) {
  .nav {
    transform: translateX(clamp(0px, 1.62vw, 31px));
  }
}

.nav-link {
  position: relative;
  padding: 23px 0 20px;
  color: #34425d;
  font-size: 18px;
  font-weight: 650;
  white-space: nowrap;
  transition: color 0.25s ease;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 14px;
  width: 100%;
  height: 2px;
  background: var(--brand);
  border-radius: 2px;
  transform: translateX(-50%) scaleX(0);
  transform-origin: center;
  transition: transform 0.25s ease;
}

.nav-link:hover {
  color: var(--brand);
}

.nav-link:hover::after {
  transform: translateX(-50%) scaleX(1);
}

.nav-cta,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 44px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 11px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 750;
  transition:
    transform 0.25s ease,
    box-shadow 0.25s ease,
    background 0.25s ease;
}

.nav-cta,
.button-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--brand), #347fff);
  box-shadow: 0 12px 25px rgba(11, 104, 255, 0.23);
}

.nav-cta:hover,
.button:hover {
  transform: translateY(-3px);
}

.nav-cta:hover,
.button-primary:hover {
  box-shadow: 0 17px 32px rgba(11, 104, 255, 0.3);
}

.button-secondary {
  color: var(--ink);
  background: #fff;
  border-color: var(--line);
}

.button-secondary:hover {
  border-color: #b7cef3;
  box-shadow: var(--shadow-soft);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 0;
  border-radius: 11px;
  background: var(--brand-pale);
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 4px auto;
  background: var(--ink);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.menu-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.hero {
  position: relative;
  min-height: clamp(1160px, 87.14vw, 1670px);
  padding: clamp(132px, 10.5vw, 200px) 0 clamp(70px, 5vw, 96px);
  overflow: hidden;
  isolation: isolate;
  background:
    radial-gradient(circle at 4% 20%, rgba(78, 139, 255, 0.14), rgba(78, 139, 255, 0.045) 18%, transparent 34%),
    radial-gradient(circle at 96% 40%, rgba(91, 151, 255, 0.12), rgba(91, 151, 255, 0.038) 17%, transparent 32%),
    #f4f7fc;
}

.site-header .nav-cta {
  min-width: 180px;
  min-height: 44px;
  margin-left: auto;
  font-size: 18px;
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  z-index: 0;
  width: 620px;
  aspect-ratio: 1;
  pointer-events: none;
  border: 1px solid rgba(78, 139, 255, 0.15);
  border-radius: 50%;
  opacity: 0.8;
}

.hero::before {
  top: 120px;
  left: -360px;
  box-shadow:
    0 0 0 90px rgba(78, 139, 255, 0.025),
    0 0 0 180px rgba(78, 139, 255, 0.018);
}

.hero::after {
  top: 330px;
  right: -430px;
  width: 720px;
  box-shadow:
    0 0 0 100px rgba(91, 151, 255, 0.023),
    0 0 0 200px rgba(91, 151, 255, 0.016);
}

.hero-inner {
  position: relative;
  z-index: 1;
  width: min(calc(100% - 80px), 1808px);
  text-align: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 20px;
  padding: 7px 13px;
  color: var(--brand);
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid #d8e7ff;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 760;
  box-shadow: 0 9px 28px rgba(39, 91, 174, 0.06);
}

.eyebrow-dot {
  width: 7px;
  height: 7px;
  background: var(--brand);
  border-radius: 50%;
  box-shadow: 0 0 0 5px rgba(11, 104, 255, 0.12);
}

.hero h1 {
  max-width: none;
  margin: 0 auto;
  color: #0c1d3c;
  font-size: clamp(54px, 4.15vw, 80px);
  font-weight: 850;
  line-height: 1.04;
  letter-spacing: -0.035em;
}

.hero h1 .hero-title-line {
  display: block;
  margin: 0;
}

.hero h1 .hero-title-line + .hero-title-line {
  margin-top: 0.42em;
}

.hero h1 strong {
  color: #075cff;
  font: inherit;
}

.hero-prompts {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(20px, 3vw, 56px);
  width: 100%;
  margin: clamp(66px, 6.88vw, 132px) 0 0;
  padding: 0;
  list-style: none;
}

.hero-prompts li {
  display: flex;
  align-items: center;
  gap: 11px;
  min-height: clamp(42px, 3vw, 58px);
  padding: 0 clamp(16px, 1.05vw, 20px) 0 clamp(10px, 0.73vw, 14px);
  color: #102243;
  background: rgba(255, 255, 255, 0.72);
  border: 2px solid #b8d4ff;
  border-radius: clamp(12px, 0.84vw, 16px);
  font-size: 20px;
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.hero-prompts li:nth-child(2) {
  margin-left: 0;
}

.hero-prompts li:nth-child(3) {
  margin-left: 0;
  font-size: 20px;
}

.hero-prompt-icon {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  color: #347fff;
  background: linear-gradient(145deg, rgba(224, 238, 255, 0.96), rgba(243, 248, 255, 0.9));
  border: 1px solid rgba(91, 156, 255, 0.32);
  border-radius: 10px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.86);
}

.hero-prompt-icon svg {
  display: block;
  width: 22px;
  height: 22px;
}

.hero-showcase {
  position: relative;
  width: 100%;
  height: clamp(350px, 25.52vw, 490px);
  margin: clamp(72px, 5.87vw, 112.5px) auto 0;
}

.showcase-trace {
  position: absolute;
  z-index: 0;
  inset: 0;
  pointer-events: none;
}

.showcase-trace::before,
.showcase-trace::after {
  content: "";
  position: absolute;
  width: 11%;
  height: 16%;
  border-top: 2px dashed rgba(83, 145, 255, 0.42);
  border-radius: 50%;
  filter: drop-shadow(0 2px 5px rgba(75, 132, 229, 0.12));
}

.showcase-trace::before {
  top: 47%;
  left: 15.5%;
  transform: rotate(-7deg);
}

.showcase-trace::after {
  top: 52%;
  right: 15.5%;
  transform: rotate(7deg);
}

.showcase-dashboard,
.showcase-card {
  position: absolute;
  display: block;
}

.showcase-dashboard {
  z-index: 2;
  top: 0;
  left: calc(50% + 8px);
  width: min(56%, 984px);
  height: auto;
  transform: translateX(-50%);
  filter: drop-shadow(0 16px 28px rgba(41, 74, 128, 0.055));
}

.showcase-card {
  z-index: 3;
  height: auto;
  filter: drop-shadow(0 10px 20px rgba(41, 74, 128, 0.04));
}

.showcase-card-left {
  top: 34%;
  left: 28px;
  width: min(19.1%, 336px);
}

.showcase-card-right {
  top: 40.5%;
  right: 0;
  width: min(20%, 351px);
}

.showcase-label {
  position: absolute;
  z-index: 4;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 0 22px;
  color: #18335f;
  background: linear-gradient(135deg, rgba(237, 245, 255, 0.96), rgba(255, 255, 255, 0.9));
  border: 1px solid rgba(83, 145, 255, 0.45);
  border-radius: 999px;
  box-shadow: 0 12px 28px rgba(57, 103, 181, 0.1);
  font-size: 20px;
  font-weight: 650;
  line-height: 1;
  white-space: nowrap;
}

.showcase-label::before {
  content: "";
  width: 4px;
  height: 22px;
  background: #4e91ff;
  border-radius: 999px;
}

.showcase-label-left {
  top: 22%;
  left: 63px;
}

.showcase-label-right {
  top: 29%;
  right: 48px;
}

.hero .hero-caption {
  margin: clamp(54px, 4.38vw, 84px) auto 0;
  color: #676f7d;
  font-size: clamp(19px, 1.36vw, 26px);
  line-height: 1.45;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: min(100%, 368px);
  min-height: clamp(58px, 4.17vw, 80px);
  margin-top: clamp(52px, 4.79vw, 92px);
  color: #fff;
  background: #2865f6;
  border-radius: clamp(12px, 0.83vw, 16px);
  box-shadow: 0 16px 34px rgba(40, 101, 246, 0.2);
  font-size: clamp(22px, 1.46vw, 28px);
  font-weight: 760;
  line-height: 1;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.hero-cta:hover {
  transform: translateY(-3px);
  box-shadow: 0 21px 40px rgba(40, 101, 246, 0.28);
}

.hero-lead {
  max-width: 720px;
  margin: 24px auto 0;
  color: #60708d;
  font-size: clamp(16px, 2vw, 19px);
}

.model-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin: 28px auto 32px;
  padding: 0;
  list-style: none;
}

.model-list li {
  display: flex;
  align-items: center;
  gap: 7px;
  min-height: 34px;
  padding: 0 13px;
  color: #43526d;
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid #dce6f4;
  border-radius: 9px;
  font-size: 12px;
  font-weight: 680;
  box-shadow: 0 7px 18px rgba(26, 60, 116, 0.045);
}

.model-list li::before {
  content: "";
  width: 7px;
  height: 7px;
  background: linear-gradient(145deg, var(--brand), #70a7ff);
  border-radius: 2px;
  transform: rotate(45deg);
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 48px;
}

.hero-actions .button {
  min-height: 50px;
  padding-inline: 26px;
}

.dashboard-stage {
  position: relative;
  max-width: 960px;
  min-height: 420px;
  margin: 0 auto;
}

.dashboard {
  position: relative;
  z-index: 2;
  width: min(86%, 820px);
  margin: 0 auto;
  padding: 18px;
  text-align: left;
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid #d8e3f2;
  border-radius: 20px;
  box-shadow: 0 34px 90px rgba(30, 72, 138, 0.16);
  transform: perspective(1200px) rotateX(1.7deg);
}

.dash-top {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 3px 14px;
  border-bottom: 1px solid #edf1f6;
}

.dash-dots {
  display: flex;
  gap: 5px;
}

.dash-dots i {
  width: 7px;
  height: 7px;
  background: #d9e3f3;
  border-radius: 50%;
}

.dash-title {
  margin-left: 9px;
  font-size: 11px;
  font-weight: 800;
}

.dash-live {
  margin-left: auto;
  padding: 4px 9px;
  color: #178b58;
  background: #eafaf2;
  border-radius: 99px;
  font-size: 9px;
  font-weight: 800;
}

.dash-body {
  display: grid;
  grid-template-columns: 124px 1fr;
  min-height: 318px;
}

.dash-side {
  padding: 20px 12px 10px 0;
  border-right: 1px solid #edf1f6;
}

.dash-logo {
  display: flex;
  align-items: center;
  gap: 7px;
  margin-bottom: 22px;
  font-size: 11px;
  font-weight: 850;
}

.dash-logo::before {
  content: "";
  width: 19px;
  height: 19px;
  background: var(--brand);
  border-radius: 6px;
  box-shadow: inset 0 0 0 6px rgba(255, 255, 255, 0.88);
}

.dash-menu span {
  display: block;
  height: 25px;
  margin-bottom: 7px;
  padding: 5px 9px;
  color: #8995a9;
  border-radius: 6px;
  font-size: 8px;
}

.dash-menu span:first-child {
  color: var(--brand);
  background: var(--brand-soft);
  font-weight: 800;
}

.dash-main {
  padding: 18px 0 0 18px;
}

.metric-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 9px;
}

.metric {
  padding: 10px;
  background: #fbfcfe;
  border: 1px solid #edf1f6;
  border-radius: 10px;
}

.metric b {
  display: block;
  margin-top: 4px;
  color: #172a4d;
  font-size: 15px;
  letter-spacing: -0.03em;
}

.metric small {
  color: #8b97a9;
  font-size: 7px;
}

.metric em {
  margin-left: 3px;
  color: #1dad6f;
  font-size: 7px;
  font-style: normal;
}

.chart-row {
  display: grid;
  grid-template-columns: 1.4fr 0.78fr;
  gap: 12px;
  margin-top: 12px;
}

.chart-card {
  min-height: 105px;
  padding: 12px;
  overflow: hidden;
  background: #fff;
  border: 1px solid #edf1f6;
  border-radius: 10px;
}

.chart-card h3 {
  margin: 0;
  font-size: 8px;
}

.line-chart {
  position: relative;
  height: 67px;
  margin-top: 8px;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0,
    transparent 16px,
    #edf2f8 17px
  );
}

.line-chart::before,
.line-chart::after {
  content: "";
  position: absolute;
  inset: 9px 0 8px;
  clip-path: polygon(0 77%, 14% 67%, 27% 72%, 42% 42%, 58% 51%, 72% 23%, 86% 33%, 100% 8%, 100% 14%, 86% 39%, 72% 29%, 58% 58%, 42% 49%, 27% 79%, 14% 74%, 0 84%);
  background: var(--brand);
}

.line-chart::after {
  opacity: 0.35;
  background: #7dd2bf;
  transform: translateY(15px);
}

.donut {
  position: relative;
  width: 72px;
  height: 72px;
  margin: 7px auto 0;
  border-radius: 50%;
  background: conic-gradient(var(--brand) 0 42%, #76a6ff 42% 65%, #55d5c0 65% 83%, #e3ebf8 83%);
}

.donut::after {
  content: "86.5%";
  position: absolute;
  inset: 13px;
  display: grid;
  place-items: center;
  color: var(--ink);
  background: #fff;
  border-radius: 50%;
  font-size: 10px;
  font-weight: 900;
}

.bar-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 12px;
}

.bars {
  display: grid;
  gap: 8px;
  padding-top: 9px;
}

.bars i {
  display: block;
  width: var(--w);
  height: 7px;
  background: linear-gradient(90deg, var(--brand), #77a7ff);
  border-radius: 99px;
}

.floating-note {
  position: absolute;
  z-index: 4;
  display: flex;
  align-items: center;
  gap: 10px;
  width: 188px;
  padding: 12px;
  text-align: left;
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid #d8e4f5;
  border-radius: 13px;
  box-shadow: var(--shadow-soft);
  animation: float 5s ease-in-out infinite;
}

.floating-note.left {
  top: 116px;
  left: -8px;
}

.floating-note.right {
  top: 132px;
  right: -8px;
  animation-delay: -2.3s;
}

.note-avatar {
  flex: 0 0 28px;
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  color: #fff;
  background: linear-gradient(145deg, #5a91ff, #0b68ff);
  border-radius: 8px;
  font-size: 11px;
  font-weight: 800;
}

.floating-note b {
  display: block;
  font-size: 10px;
}

.floating-note small {
  display: block;
  color: var(--muted);
  font-size: 8px;
  line-height: 1.45;
}

.hero-caption {
  margin: 26px auto 0;
  color: #7a879d;
  font-size: 13px;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

.section {
  position: relative;
  padding: 112px 0;
  font-size: 18px;
}

.section-alt {
  background: var(--surface-alt);
}

.section-pale {
  background: var(--brand-pale);
}

.section-heading {
  max-width: 920px;
  margin: 0 auto 64px;
  text-align: center;
}

.section-kicker {
  margin: 0 0 10px;
  color: var(--brand);
  font-size: 15px;
  font-weight: 820;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.section-heading h2 {
  margin: 0;
  font-size: clamp(34px, 4vw, 52px);
  line-height: 1.25;
  letter-spacing: -0.045em;
}

.section-heading p {
  margin: 17px auto 0;
  color: var(--muted);
  font-size: 18px;
}

.reveal {
  opacity: 1;
  transform: none;
  transition:
    opacity 0.7s ease,
    transform 0.7s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.js .reveal {
  opacity: 0;
  transform: translateY(32px);
}

.js .reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

.geo-reasons {
  display: grid;
  gap: 16px;
}

.reason-card {
  display: grid;
  grid-template-columns: 92px 1.25fr 1.6fr;
  align-items: center;
  gap: 28px;
  min-height: 158px;
  padding: 28px 36px;
  background: #fff;
  border: 1px solid #edf1f7;
  border-radius: 20px;
  box-shadow: 0 10px 35px rgba(35, 64, 111, 0.055);
  transition:
    transform 0.25s ease,
    box-shadow 0.25s ease,
    border-color 0.25s ease,
    background 0.25s ease;
}

.reason-index,
.reason-stat::before,
.reason-stat b {
  transition:
    color 0.25s ease,
    background 0.25s ease,
    border-color 0.25s ease,
    box-shadow 0.25s ease,
    transform 0.25s ease;
}

@media (hover: hover) and (pointer: fine) {
  .reason-card:hover {
    background: linear-gradient(110deg, #fff 55%, #f5f9ff);
    border-color: #b7d2fb;
    box-shadow: 0 28px 60px rgba(35, 80, 153, 0.14);
    transform: translateY(-7px);
  }

  .reason-card:hover .reason-index {
    color: #84b2ff;
    transform: translateX(2px);
  }

  .reason-card:hover .reason-stat::before {
    background: #67a0ff;
    border-color: #e5efff;
    box-shadow: 0 0 0 5px rgba(103, 160, 255, 0.12);
  }

  .reason-card:hover .reason-stat b {
    color: #0057e8;
  }
}

.reason-index {
  color: #b4d0ff;
  font-size: 52px;
  font-weight: 900;
  line-height: 1;
}

.reason-copy h3 {
  margin: 0 0 7px;
  font-size: 20px;
  line-height: 1.4;
}

.reason-copy p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

.reason-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.reason-stat {
  display: grid;
  grid-template-columns: 13px minmax(0, 1fr);
  grid-template-rows: auto auto;
  column-gap: 10px;
  align-items: start;
  padding-left: 0;
}

.reason-stat::before {
  content: "";
  grid-column: 1;
  grid-row: 1;
  align-self: center;
  justify-self: center;
  box-sizing: content-box;
  width: 7px;
  height: 7px;
  background: #d4e4ff;
  border: 3px solid #eff5ff;
  border-radius: 50%;
}

.reason-stat b {
  grid-column: 2;
  grid-row: 1;
  display: block;
  color: var(--brand);
  font-size: 21px;
  line-height: 1.7;
}

.reason-stat small {
  grid-column: 2;
  grid-row: 2;
  display: block;
  color: #6d7a90;
  font-size: 14px;
}

.solution-explorer {
  overflow: hidden;
  background: #fff;
  border: 1px solid #dbe5f3;
  border-radius: 28px;
  box-shadow: 0 24px 64px rgba(24, 58, 112, 0.1);
}

.solution-stage {
  display: grid;
  grid-template-columns: 0.78fr 1.22fr;
  min-height: 350px;
}

.solution-image {
  min-width: 0;
  min-height: 350px;
  margin: 0;
  overflow: hidden;
  background: #edf4ff;
}

.solution-image img {
  width: 100%;
  height: 100%;
  min-height: 350px;
  object-fit: cover;
  object-position: center;
}

.solution-content {
  display: grid;
  align-items: center;
  min-width: 0;
  padding: 48px 58px;
}

.solution-capability-panel {
  grid-area: 1 / 1;
  animation: solutionPanelIn 0.34s ease both;
}

.solution-capability-panel h3 {
  margin: 0 0 20px;
  color: #0c1d3c;
  font-size: 34px;
  line-height: 1.3;
  letter-spacing: -0.035em;
}

.solution-capability-panel p {
  margin: 0;
  color: #5e6f8b;
  font-size: 18px;
  line-height: 1.85;
}

.solution-capability-panel p + p {
  margin-top: 14px;
}

@keyframes solutionPanelIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.solution-tab-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid #dbe5f3;
}

.solution-tab {
  min-height: 148px;
  display: grid;
  justify-items: center;
  align-items: center;
  align-content: center;
  gap: 13px;
  padding: 20px 14px;
  color: #60718d;
  background: #fff;
  border: 0;
  border-right: 1px solid #dbe5f3;
  cursor: pointer;
  font-size: 18px;
  font-weight: 650;
  transition:
    color 0.25s ease,
    background 0.25s ease;
}

.solution-tab:last-child {
  border-right: 0;
}

.solution-tab-icon {
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  color: #8290a5;
  background: #e3e6eb;
  border: 2px solid transparent;
  border-radius: 50%;
  transition:
    color 0.25s ease,
    background 0.25s ease,
    border-color 0.25s ease,
    box-shadow 0.25s ease,
    transform 0.25s ease;
}

.solution-tab-icon svg {
  width: 27px;
  height: 27px;
}

.solution-tab:hover {
  color: #243b61;
  background: #f8faff;
}

.solution-tab[aria-selected="true"] {
  color: #0c2753;
  background: #f1f6ff;
}

.solution-tab[aria-selected="true"] .solution-tab-icon {
  color: var(--brand);
  background: #e8f1ff;
  border-color: #3983ff;
  box-shadow: 0 8px 22px rgba(57, 131, 255, 0.18);
  transform: translateY(-2px);
}

.check {
  flex: 0 0 21px;
  width: 21px;
  height: 21px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--brand);
  background: var(--brand-soft);
  border-radius: 50%;
  font-size: 0;
}

.check::before {
  width: 13px;
  height: 13px;
  content: "";
  background: currentColor;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M20 6 9 17l-5-5' fill='none' stroke='black' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / contain no-repeat;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M20 6 9 17l-5-5' fill='none' stroke='black' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / contain no-repeat;
}

.ai-question {
  display: grid;
  grid-template-columns: 0.8fr 130px 1fr;
  align-items: center;
  gap: 20px;
  margin-top: 78px;
}

.prompt-box,
.answer-box {
  min-height: 230px;
  padding: 26px;
  background: #fff;
  border: 1px solid #dce4f0;
  border-radius: 18px;
  box-shadow: var(--shadow-soft);
}

.prompt-search {
  display: flex;
  align-items: center;
  gap: 10px;
  height: 42px;
  padding: 0 13px;
  color: #8b97aa;
  background: #f7f9fc;
  border: 1px solid #e5ebf3;
  border-radius: 10px;
  font-size: 14px;
}

.prompt-search::before {
  content: "⌕";
  font-size: 20px;
}

.prompt-label {
  margin: 24px 0 12px;
  color: var(--muted);
  font-size: 14px;
}

.prompt-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.prompt-chips span {
  padding: 6px 10px;
  color: #71819a;
  background: #f4f7fb;
  border: 1px solid #e6ecf4;
  border-radius: 8px;
  font-size: 14px;
}

.prompt-button {
  width: 112px;
  height: 34px;
  margin-top: 22px;
  color: #fff;
  background: var(--brand);
  border-radius: 8px;
  display: grid;
  place-items: center;
  font-size: 14px;
  font-weight: 800;
}

.flow-arrow {
  position: relative;
  height: 60px;
}

.flow-arrow::before {
  content: "";
  position: absolute;
  top: 23px;
  left: 0;
  right: 24px;
  height: 15px;
  background: linear-gradient(90deg, #ddebff, #7fb0ff);
  border-radius: 99px;
}

.flow-arrow::after {
  content: "";
  position: absolute;
  top: 10px;
  right: 0;
  border-width: 20px 0 20px 32px;
  border-style: solid;
  border-color: transparent transparent transparent #7fb0ff;
}

.answer-box {
  padding: 22px;
  border-color: #bcd2f3;
}

.answer-head {
  display: flex;
  align-items: center;
  gap: 11px;
  padding-bottom: 14px;
  border-bottom: 1px solid #e8edf5;
}

.answer-avatar {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  color: #fff;
  background: linear-gradient(145deg, #243f70, #7fa7e7);
  border-radius: 50%;
  font-weight: 850;
}

.answer-head b {
  display: block;
  font-size: 15px;
}

.answer-head small {
  color: var(--muted);
  font-size: 14px;
}

.recommendation {
  display: grid;
  grid-template-columns: 28px 1fr auto;
  gap: 12px;
  align-items: start;
  margin-top: 16px;
  padding: 13px;
  background: #f4f8ff;
  border-radius: 12px;
}

.rank {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--brand);
  border-radius: 50%;
  font-size: 14px;
  font-weight: 850;
}

.recommendation b {
  display: block;
  font-size: 15px;
}

.recommendation p {
  margin: 4px 0 0;
  color: #6f7c91;
  font-size: 14px;
  line-height: 1.5;
}

.recommendation em {
  padding: 3px 7px;
  color: #16885a;
  background: #e5f8ef;
  border-radius: 99px;
  font-size: 14px;
  font-style: normal;
  font-weight: 800;
}

.tabs {
  max-width: 100%;
  margin-inline: auto;
}

.tab-list {
  display: flex;
  width: max-content;
  max-width: 100%;
  margin: 0 auto 44px;
  padding: 5px;
  overflow-x: auto;
  scrollbar-width: none;
  background: #fff;
  border: 1px solid #dfe7f2;
  border-radius: 13px;
  box-shadow: 0 8px 30px rgba(27, 57, 107, 0.06);
}

.tab-list::-webkit-scrollbar {
  display: none;
}

.tab-button {
  min-width: max-content;
  padding: 10px 20px;
  color: #4c5b73;
  background: transparent;
  border: 0;
  border-radius: 9px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 740;
  transition:
    color 0.25s ease,
    background 0.25s ease,
    box-shadow 0.25s ease;
}

.tab-button:hover {
  color: var(--brand);
}

.tab-button[aria-selected="true"] {
  color: #fff;
  background: var(--brand);
  box-shadow: 0 8px 18px rgba(11, 104, 255, 0.25);
}

.tab-panel[hidden] {
  display: none;
}

.feature-panel {
  display: grid;
  grid-template-columns: 0.83fr 1.17fr;
  align-items: center;
  gap: 68px;
  min-height: 470px;
  animation: panelIn 0.45s ease both;
}

@keyframes panelIn {
  from {
    opacity: 0;
    transform: translateY(15px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.feature-copy h3 {
  margin: 0 0 14px;
  font-size: 32px;
  letter-spacing: -0.035em;
}

.feature-copy > p {
  margin: 0 0 25px;
  color: #65738a;
  font-size: 18px;
}

.bullet-list {
  display: grid;
  gap: 13px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.bullet-list li {
  position: relative;
  display: block;
  min-height: 21px;
  padding-left: 31px;
  color: #35445e;
  font-size: 16px;
  font-weight: 640;
  line-height: 1.7;
}

.bullet-list li .check {
  position: absolute;
  top: 50%;
  left: 0;
  margin: 0;
  transform: translateY(-50%);
}

.feature-visual {
  position: relative;
  min-height: 390px;
  padding: 20px;
  overflow: hidden;
  background:
    radial-gradient(circle at 90% 0%, rgba(87, 151, 255, 0.19), transparent 32%),
    #fff;
  border: 1px solid #dce5f2;
  border-radius: 20px;
  box-shadow: var(--shadow);
}

.mini-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 16px;
  border-bottom: 1px solid #edf1f6;
}

.mini-logo {
  width: 29px;
  height: 29px;
  background: var(--brand);
  border-radius: 8px;
  box-shadow: inset 0 0 0 8px rgba(255, 255, 255, 0.88);
}

.mini-head b {
  font-size: 14px;
}

.mini-head span {
  margin-left: auto;
  padding: 4px 9px;
  color: var(--brand);
  background: var(--brand-soft);
  border-radius: 99px;
  font-size: 14px;
  font-weight: 800;
}

.mini-metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin: 15px 0;
}

.mini-metrics div {
  padding: 10px;
  background: #f8faff;
  border-radius: 8px;
}

.mini-metrics small {
  display: block;
  color: #8a96aa;
  font-size: 14px;
}

.mini-metrics b {
  color: var(--ink);
  font-size: 16px;
}

.mini-grid {
  display: grid;
  grid-template-columns: 1.35fr 0.8fr;
  gap: 11px;
}

.mini-card {
  min-height: 137px;
  padding: 13px;
  border: 1px solid #edf1f6;
  border-radius: 10px;
}

.mini-card h4 {
  margin: 0 0 10px;
  font-size: 14px;
}

.source-bars {
  display: grid;
  gap: 11px;
}

.source-row {
  display: grid;
  grid-template-columns: 50px 1fr 28px;
  align-items: center;
  gap: 8px;
  color: #8490a2;
  font-size: 14px;
}

.source-row i {
  height: 7px;
  background: #edf2f8;
  border-radius: 99px;
  overflow: hidden;
}

.source-row i::after {
  content: "";
  display: block;
  width: var(--w);
  height: 100%;
  background: linear-gradient(90deg, var(--brand), #79a8ff);
  border-radius: inherit;
}

.radar {
  width: 105px;
  height: 105px;
  margin: 0 auto;
  background:
    linear-gradient(30deg, transparent 49%, #dce6f4 50% 51%, transparent 52%),
    linear-gradient(90deg, transparent 49%, #dce6f4 50% 51%, transparent 52%),
    linear-gradient(150deg, transparent 49%, #dce6f4 50% 51%, transparent 52%);
  border: 1px solid #dce6f4;
  border-radius: 50%;
  clip-path: polygon(50% 0, 95% 24%, 95% 74%, 50% 100%, 5% 74%, 5% 24%);
}

.radar::after {
  content: "";
  display: block;
  width: 74%;
  height: 74%;
  margin: 13%;
  background: rgba(11, 104, 255, 0.22);
  clip-path: polygon(50% 4%, 91% 31%, 74% 82%, 35% 91%, 9% 47%);
}

.trend-lines {
  height: 108px;
  margin-top: 8px;
  background:
    linear-gradient(173deg, transparent 0 30%, var(--brand) 31% 32%, transparent 33%),
    linear-gradient(187deg, transparent 0 43%, #55d1bc 44% 45%, transparent 46%),
    repeating-linear-gradient(to bottom, transparent 0 26px, #edf2f8 27px);
}

.sentiment-donut {
  position: relative;
  width: 112px;
  height: 112px;
  margin: 8px auto 0;
  background: conic-gradient(#0b68ff 0 70%, #58d0bd 70% 87%, #ff8a89 87% 92%, #e6edf7 92%);
  border-radius: 50%;
}

.sentiment-donut::after {
  content: "86.5%\\A 正向";
  white-space: pre;
  position: absolute;
  inset: 20px;
  display: grid;
  place-items: center;
  text-align: center;
  background: #fff;
  border-radius: 50%;
  font-size: 14px;
  font-weight: 850;
  line-height: 1.4;
}

.case-tabs .tab-list {
  margin-bottom: 38px;
}

.case-panel {
  display: grid;
  grid-template-columns: 1fr 0.78fr;
  gap: 44px;
  align-items: center;
  min-height: 470px;
  padding: 46px;
  background: #fff;
  border: 1px solid #e1e8f2;
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  animation: panelIn 0.45s ease both;
}

.case-copy .metric-badge {
  display: inline-flex;
  padding: 6px 12px;
  color: var(--brand);
  background: var(--brand-soft);
  border-radius: 99px;
  font-size: 15px;
  font-weight: 850;
}

.case-copy h3 {
  margin: 17px 0 12px;
  font-size: 34px;
  letter-spacing: -0.04em;
}

.case-copy > p {
  margin: 0 0 23px;
  color: #59677e;
  font-size: 18px;
}

.case-proof {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 25px;
  color: #7b879a;
  font-size: 14px;
}

.proof-logo {
  display: inline-grid;
  place-items: center;
  min-width: 72px;
  height: 30px;
  padding-inline: 10px;
  color: var(--brand);
  background: #f1f6ff;
  border-radius: 7px;
  font-weight: 900;
}

.case-visual {
  position: relative;
  min-height: 370px;
  overflow: hidden;
  border-radius: 18px;
  background: linear-gradient(145deg, #dbe8fb, #8fb4e9);
  box-shadow: 0 25px 60px rgba(31, 69, 126, 0.16);
}

.case-visual.photo-medical {
  background:
    linear-gradient(180deg, transparent 45%, rgba(11, 29, 58, 0.62)),
    url("./images/medical-lab.webp") center/cover;
}

.case-scene {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.case-scene::before {
  content: "";
  position: absolute;
  width: 190px;
  height: 190px;
  right: -45px;
  top: -36px;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 50%;
  box-shadow:
    0 0 0 38px rgba(255, 255, 255, 0.06),
    0 0 0 80px rgba(255, 255, 255, 0.04);
}

.scene-window {
  position: absolute;
  top: 0;
  left: 0;
  width: 50%;
  height: 55%;
  background:
    linear-gradient(90deg, transparent 49%, rgba(255, 255, 255, 0.55) 50% 52%, transparent 53%),
    linear-gradient(transparent 49%, rgba(255, 255, 255, 0.55) 50% 52%, transparent 53%),
    linear-gradient(145deg, rgba(255, 255, 255, 0.6), rgba(117, 168, 238, 0.12));
  border-right: 9px solid rgba(255, 255, 255, 0.45);
}

.scene-table {
  position: absolute;
  left: 7%;
  right: 7%;
  bottom: 12%;
  height: 23%;
  background: linear-gradient(180deg, #f6f8fb, #adbace);
  clip-path: polygon(8% 0, 92% 0, 100% 100%, 0 100%);
}

.scene-screen {
  position: absolute;
  top: 16%;
  right: 9%;
  width: 47%;
  height: 37%;
  padding: 12px;
  background:
    linear-gradient(168deg, transparent 0 44%, #0b68ff 45% 47%, transparent 48%),
    repeating-linear-gradient(to bottom, #f9fbff 0 27px, #e5edf8 28px);
  border: 6px solid #2f4668;
  border-radius: 6px;
  box-shadow: 0 12px 30px rgba(22, 49, 89, 0.25);
}

.scene-person {
  position: absolute;
  bottom: 19%;
  width: 84px;
  height: 152px;
}

.scene-person::before {
  content: "";
  position: absolute;
  width: 43px;
  height: 43px;
  top: 0;
  left: 21px;
  background: #e2b090;
  border-radius: 50%;
  box-shadow: inset 0 13px 0 #20344e;
}

.scene-person::after {
  content: "";
  position: absolute;
  width: 84px;
  height: 105px;
  bottom: 0;
  left: 0;
  background: var(--shirt, #203c67);
  border-radius: 42px 42px 14px 14px;
  clip-path: polygon(19% 0, 81% 0, 100% 100%, 0 100%);
}

.scene-person.one {
  left: 18%;
}

.scene-person.two {
  left: 42%;
  transform: scale(0.9);
  --shirt: #e6edf6;
}

.scene-person.three {
  right: 8%;
  transform: scale(0.82);
  --shirt: #5e86bd;
}

.ecommerce-scene {
  background:
    radial-gradient(circle at 72% 32%, rgba(255, 255, 255, 0.6), transparent 18%),
    linear-gradient(145deg, #f5dce8, #bba6dd);
}

.ecommerce-scene .scene-screen {
  top: 12%;
  left: 10%;
  width: 55%;
  height: 45%;
  background:
    linear-gradient(90deg, transparent 0 20%, #f29eaf 21% 42%, transparent 43% 56%, #cdb4f0 57% 78%, transparent 79%),
    linear-gradient(#fff, #f7f7fb);
  border-color: #fff;
}

.education-scene {
  background: linear-gradient(145deg, #cce7f4, #7ea3da);
}

.education-scene .scene-screen {
  left: 8%;
  right: auto;
  width: 57%;
}

.travel-scene {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(27, 75, 121, 0.38)),
    linear-gradient(145deg, #80d7e7 0 48%, #f0d59f 49% 65%, #5b9f80 66%);
}

.travel-scene .scene-screen {
  background:
    radial-gradient(circle at 34% 35%, #ff7867 0 5%, transparent 6%),
    radial-gradient(circle at 64% 57%, #0b68ff 0 5%, transparent 6%),
    linear-gradient(23deg, transparent 0 48%, #aac0d3 49% 51%, transparent 52%),
    #f8fbff;
}

.industry-scene {
  background: linear-gradient(145deg, #dbe9f4, #7b9ec4);
}

.industry-building {
  position: absolute;
  left: 8%;
  right: 8%;
  bottom: 14%;
  height: 52%;
  background: #e8eef3;
  box-shadow: 0 18px 30px rgba(29, 46, 67, 0.25);
  clip-path: polygon(0 22%, 56% 22%, 56% 0, 72% 0, 72% 22%, 100% 22%, 100% 100%, 0 100%);
}

.industry-building::after {
  content: "";
  position: absolute;
  left: 8%;
  right: 8%;
  bottom: 16%;
  height: 36%;
  background: repeating-linear-gradient(90deg, #4c7ba9 0 13%, #bed0df 13% 19%);
}

.proof-bubble {
  position: absolute;
  left: 7%;
  right: 7%;
  bottom: 7%;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  color: #2f3f58;
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: 12px;
  box-shadow: 0 10px 26px rgba(31, 54, 89, 0.18);
  font-size: 14px;
  line-height: 1.45;
}

.proof-bubble span {
  flex: 0 0 30px;
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--brand);
  border-radius: 50%;
  font-weight: 850;
}

.faq-wrap {
  max-width: 100%;
  margin: 0 auto;
}

.faq-item {
  margin-bottom: 11px;
  overflow: hidden;
  background: #fff;
  border: 1px solid #e2e9f3;
  border-radius: 13px;
  box-shadow: 0 7px 24px rgba(31, 60, 105, 0.04);
}

.faq-button {
  width: 100%;
  min-height: 64px;
  display: flex;
  align-items: center;
  gap: 13px;
  padding: 16px 22px;
  text-align: left;
  background: transparent;
  border: 0;
  cursor: pointer;
  font-size: 17px;
  font-weight: 760;
}

.faq-button::before {
  content: "";
  flex: 0 0 7px;
  width: 7px;
  height: 7px;
  background: var(--brand);
  border-radius: 50%;
}

.faq-icon {
  position: relative;
  width: 20px;
  height: 20px;
  margin-left: auto;
}

.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  top: 9px;
  left: 4px;
  width: 12px;
  height: 2px;
  background: #61708a;
  border-radius: 2px;
  transition: transform 0.3s ease;
}

.faq-icon::after {
  transform: rotate(90deg);
}

.faq-button[aria-expanded="true"] .faq-icon::after {
  transform: rotate(0);
}

.faq-panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.35s ease;
}

.faq-panel > div {
  overflow: hidden;
}

.faq-button[aria-expanded="true"] + .faq-panel {
  grid-template-rows: 1fr;
}

.faq-panel p {
  margin: 0;
  padding: 0 50px 24px 42px;
  color: #65738a;
  font-size: 16px;
}

.contact {
  color: #fff;
  background:
    radial-gradient(circle at 90% 20%, rgba(62, 128, 255, 0.22), transparent 24%),
    #05070b;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 80px;
}

.contact h2 {
  margin: 0;
  font-size: clamp(34px, 4vw, 50px);
  line-height: 1.25;
  letter-spacing: -0.045em;
}

.contact p {
  margin: 16px 0 28px;
  color: #a8b1c1;
  font-size: 18px;
}

.contact .button {
  min-height: 50px;
  padding-inline: 28px;
}

.contact-list {
  display: grid;
  gap: 12px;
}

.contact-list a {
  display: flex;
  align-items: center;
  gap: 11px;
  min-height: 48px;
  padding: 0 16px;
  color: #dae2ef;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 10px;
  font-size: 15px;
  transition:
    background 0.25s ease,
    transform 0.25s ease;
}

.contact-list a:hover {
  background: rgba(255, 255, 255, 0.13);
  transform: translateX(5px);
}

.contact-list span {
  color: #6ea1ff;
  font-weight: 900;
}

.site-footer {
  padding: 68px 0 26px;
  background: #fff;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.65fr repeat(3, 0.7fr);
  gap: 60px;
}

.footer-about p {
  max-width: 360px;
  margin: 6px 0 0;
  padding-left: 0;
  color: var(--muted);
  font-size: 15px;
}

.footer-column h3 {
  margin: 0 0 16px;
  font-size: 16px;
}

.footer-column a {
  display: block;
  margin: 9px 0;
  color: #718098;
  font-size: 14px;
}

.footer-column a:hover {
  color: var(--brand);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 54px;
  padding-top: 22px;
  color: #9aa5b7;
  border-top: 1px solid #edf1f6;
  font-size: 12px;
}

.footer-legal {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  margin-left: auto;
  text-align: right;
}

.footer-legal a {
  color: inherit;
  transition: color 0.2s ease;
}

.footer-legal a:hover,
.footer-legal a:focus-visible {
  color: var(--brand);
}

.footer-legal-separator {
  color: #d2d9e4;
}

.contact-rail {
  position: fixed;
  z-index: 81;
  top: min(58vh, 620px);
  right: 50px;
  width: 72px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid #b8bec8;
  border-radius: 36px;
  box-shadow: 0 10px 26px rgba(31, 49, 80, 0.05);
}

.contact-rail a {
  display: flex;
  min-height: 103px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 8px;
  color: #273247;
  font-size: 17px;
  line-height: 1.25;
  text-align: center;
}

.contact-rail a + a {
  border-top: 1px solid #b8bec8;
}

.contact-rail span {
  font-size: 23px;
  line-height: 1;
}

.contact-rail b {
  font-weight: 500;
}

.back-to-top {
  position: fixed;
  z-index: 80;
  right: 50px;
  bottom: 150px;
  width: 72px;
  height: 72px;
  display: grid;
  place-items: center;
  color: #273247;
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid #b8bec8;
  border-radius: 50%;
  box-shadow: 0 10px 26px rgba(31, 49, 80, 0.05);
  cursor: pointer;
  font-size: 34px;
  opacity: 1;
  pointer-events: auto;
  transform: none;
  transition:
    opacity 0.25s ease,
    transform 0.25s ease;
}

.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.back-to-top:hover {
  color: var(--brand);
  transform: translateY(-3px);
}

/* v1.9: 首屏顺序、核心能力、案例与问答展示 */
.hero-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero h1 {
  order: 1;
}

.hero-cta {
  order: 2;
  width: min(100%, 246px);
  min-height: 54px;
  margin-top: 74px;
  border: 1px solid rgba(255, 255, 255, 0.58);
  border-radius: 12px;
  box-shadow: 0 10px 22px rgba(40, 101, 246, 0.18);
  font-size: 20px;
}

.hero-cta:hover,
.hero-cta:focus-visible {
  background: #0c5df0;
  box-shadow: 0 16px 28px rgba(20, 86, 227, 0.3);
  outline: 0;
  transform: translateY(-2px);
}

.hero-cta:active {
  box-shadow: 0 6px 14px rgba(20, 86, 227, 0.24);
  transform: translateY(1px) scale(0.98);
}

.hero-showcase {
  order: 3;
  margin-top: 58px;
}

.hero .hero-caption {
  order: 4;
  margin-top: 40px;
}

.hero-prompts {
  order: 5;
  margin-top: 34px;
}

.reason-index {
  font-size: 68px;
}

.reason-stat b {
  font-size: 25px;
  line-height: 1.45;
}

.js .reason-card .reason-index,
.js .reason-card .reason-stat b,
.js .reason-card .reason-stat::before {
  opacity: 0;
  transform: translateY(12px) scale(0.82);
}

.js .reason-card.in-view .reason-index,
.js .reason-card.in-view .reason-stat b,
.js .reason-card.in-view .reason-stat::before {
  animation: reasonMetricIn 0.56s cubic-bezier(0.16, 0.9, 0.25, 1.2) forwards;
}

.js .reason-card.in-view .reason-stat:nth-child(1) b,
.js .reason-card.in-view .reason-stat:nth-child(1)::before {
  animation-delay: 0.1s;
}

.js .reason-card.in-view .reason-stat:nth-child(2) b,
.js .reason-card.in-view .reason-stat:nth-child(2)::before {
  animation-delay: 0.18s;
}

.js .reason-card.in-view .reason-stat:nth-child(3) b,
.js .reason-card.in-view .reason-stat:nth-child(3)::before {
  animation-delay: 0.26s;
}

@keyframes reasonMetricIn {
  0% { opacity: 0; transform: translateY(12px) scale(0.82); }
  70% { opacity: 1; transform: translateY(-2px) scale(1.04); }
  100% { opacity: 1; transform: translateY(0) scale(1); }
}

/* v1.9: WHY GEO 鏁版嵁鍗＄墖鍜岋紝鎮仠鏃惰缁濇祦鍏夊弽棣� */
@property --reason-border-angle {
  syntax: "<angle>";
  inherits: false;
  initial-value: 0deg;
}

.geo-reasons {
  gap: 18px;
}

.reason-card {
  --reason-border-angle: 0deg;
  position: relative;
  isolation: isolate;
  grid-template-columns: 130px minmax(280px, 1.05fr) minmax(540px, 1.45fr);
  gap: 34px;
  min-height: 174px;
  padding: 26px 38px;
  overflow: hidden;
  background:
    linear-gradient(112deg, #ffffff 0%, #fbfdff 54%, #f5f9ff 100%) padding-box,
    linear-gradient(#dce6f5, #dce6f5) border-box;
  border: 1px solid transparent;
  border-radius: 20px;
  box-shadow: 0 12px 34px rgba(35, 64, 111, 0.07);
}

.reason-card::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 0;
  opacity: 0;
  background: linear-gradient(108deg, transparent 34%, rgba(71, 138, 255, 0.1) 48%, transparent 62%);
  transform: translateX(-138%);
  pointer-events: none;
}

.reason-index {
  justify-content: end;
  text-align: right;
  font-variant-numeric: tabular-nums;
  display: grid;
  align-content: center;
  height: 92px;
  padding-right: 30px;
  color: #9bbdff;
  border-right: 1px solid #d6e3f7;
  font-size: 82px;
  font-weight: 300;
  letter-spacing: -0.085em;
  line-height: 0.9;
}

.reason-copy,
.reason-stats {
  position: relative;
  z-index: 1;
}

.reason-copy h3 {
  margin-bottom: 9px;
  font-size: 22px;
}

.reason-copy p {
  font-size: 15px;
  line-height: 1.75;
}

.reason-stats {
  gap: 14px;
}

.reason-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 94px;
  padding: 14px 12px;
  text-align: center;
  background: linear-gradient(145deg, #f8fbff, #eef5ff);
  border: 1px solid #dce7f8;
  border-radius: 16px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.88);
}

.reason-stat::before {
  content: none;
}

.reason-stat b {
  display: block;
  color: #1767f2;
  font-size: 30px;
  font-weight: 780;
  line-height: 1.15;
}

.reason-stat small {
  display: block;
  margin-top: 7px;
  color: #607493;
  font-size: 13px;
  line-height: 1.35;
}

.js .reason-card .reason-stat {
  opacity: 0;
  transform: translateY(12px) scale(0.9);
}

.js .reason-card.in-view .reason-stat {
  animation: reasonMetricIn 0.56s cubic-bezier(0.16, 0.9, 0.25, 1.2) forwards;
}

.js .reason-card.in-view .reason-stat:nth-child(1) { animation-delay: 0.1s; }
.js .reason-card.in-view .reason-stat:nth-child(2) { animation-delay: 0.18s; }
.js .reason-card.in-view .reason-stat:nth-child(3) { animation-delay: 0.26s; }

@keyframes reasonCardSheen {
  from { opacity: 0; transform: translateX(-138%); }
  18% { opacity: 1; }
  58% { opacity: 1; }
  to { opacity: 0; transform: translateX(138%); }
}

@keyframes reasonBorderClockwise {
  to { --reason-border-angle: 360deg; }
}

@keyframes reasonIndexVerticalFlow {
  to { background-position: 0 220%; }
}

@media (hover: hover) and (pointer: fine) {
  .reason-card:hover {
    background:
      linear-gradient(112deg, #ffffff 0%, #f8fbff 55%, #f1f7ff 100%) padding-box,
      conic-gradient(
        from var(--reason-border-angle),
        #5c9aff 0deg,
        #dceaff 38deg,
        #ffffff 82deg,
        #dceaff 142deg,
        #5c9aff 180deg,
        #dceaff 218deg,
        #ffffff 262deg,
        #dceaff 322deg,
        #5c9aff 360deg
      ) border-box;
    box-shadow: 0 24px 56px rgba(35, 95, 184, 0.15);
    transform: translateY(-5px);
    animation: reasonBorderClockwise 2.2s linear infinite;
  }

  .reason-card:hover::before {
    animation: reasonCardSheen 1.65s ease-in-out infinite;
  }

  .reason-card:hover .reason-index {
    color: transparent;
    background: linear-gradient(
      to bottom,
      #91bbff 0%,
      #3180ff 28%,
      #dceaff 48%,
      #1264ee 63%,
      #91bbff 100%
    );
    background-size: 100% 220%;
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: reasonIndexVerticalFlow 1.35s linear infinite;
  }

.reason-card:hover .reason-stat {
    border-color: #c4d9fb;
    box-shadow: 0 10px 22px rgba(38, 112, 245, 0.09), inset 0 1px 0 #fff;
  }
}

/* v1.9: 侧边快捷咨询与返回顶部 */
.contact-rail {
  top: auto;
  right: clamp(28px, 2.6vw, 52px);
  bottom: 158px;
  width: 96px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.97);
  border: 1px solid #c8dcfb;
  border-radius: 26px;
  box-shadow: 0 18px 42px rgba(28, 77, 154, 0.13);
}

.contact-rail a {
  min-height: 122px;
  gap: 9px;
  color: #20375e;
  font-size: 15px;
  font-weight: 700;
  transition: color 0.22s ease, background 0.22s ease;
}

.contact-rail a + a {
  border-top-color: #d8e6fb;
}

.contact-rail a:hover,
.contact-rail a:focus-visible {
  color: #0a68ff;
  background: linear-gradient(145deg, #f8fbff, #eaf3ff);
  outline: 0;
}

.contact-rail-icon {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  color: #0a68ff;
  background: #eaf3ff;
  border: 1px solid #cde0fe;
  border-radius: 13px;
}

.contact-rail-icon svg {
  width: 21px;
  height: 21px;
}

.contact-rail b {
  font-weight: 700;
  letter-spacing: 0.02em;
}

.back-to-top {
  right: clamp(34px, 3vw, 58px);
  bottom: 48px;
  width: 86px;
  height: 86px;
  color: #fff;
  background: linear-gradient(145deg, #1674ff, #075be6);
  border: 1px solid rgba(255, 255, 255, 0.62);
  box-shadow: 0 16px 32px rgba(7, 91, 230, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.24);
  font-size: 0;
}

.back-to-top svg {
  width: 34px;
  height: 34px;
  transition: transform 0.22s ease;
}

.back-to-top:hover,
.back-to-top:focus-visible {
  color: #fff;
  background: linear-gradient(145deg, #2c83ff, #0752d2);
  box-shadow: 0 20px 40px rgba(7, 91, 230, 0.38), inset 0 1px 0 rgba(255, 255, 255, 0.3);
  outline: 0;
  transform: translateY(-5px);
}

.back-to-top:hover svg,
.back-to-top:focus-visible svg {
  transform: translateY(-2px);
}

.contact .button {
  min-height: 56px;
  padding-inline: 34px;
  font-size: 20px;
  font-weight: 760;
}

@media (min-width: 1101px) {
  .footer-about p {
    max-width: 425px;
    line-height: 1.7;
  }
}

.solution-overview,
.solution-capability-panel {
  grid-area: 1 / 1;
  animation: solutionPanelIn 0.34s ease both;
}

.solution-overview p {
  margin: 0;
  color: #5e6f8b;
  font-size: 18px;
  line-height: 1.85;
}

.solution-overview p + p {
  margin-top: 14px;
}

.solution-tab-icon {
  width: 64px;
  height: 64px;
  color: #6d8fbe;
  background: #e7eef9;
  border: 0;
  box-shadow: none;
}

.solution-tab-icon svg {
  width: 31px;
  height: 31px;
  fill: currentColor;
  stroke: none;
}

.solution-tab[aria-selected="true"] .solution-tab-icon {
  color: #fff;
  background: var(--brand);
  border: 0;
  box-shadow: 0 10px 20px rgba(11, 104, 255, 0.2);
  transform: translateY(-2px);
}

.ai-question {
  grid-template-columns: minmax(340px, 0.68fr) minmax(170px, 0.28fr) minmax(600px, 1.15fr);
  gap: 28px;
  margin-top: 70px;
}

.prompt-box,
.answer-box {
  min-height: 310px;
  padding: 32px;
  border-color: #d7e2f2;
  border-radius: 20px;
  box-shadow: 0 14px 34px rgba(32, 58, 104, 0.08);
}

.prompt-search {
  height: 58px;
  padding-inline: 16px;
  color: #263f66;
  background: #fff;
  border-color: #bfd4f6;
  border-radius: 11px;
  font-size: 17px;
}

.prompt-label {
  margin: 20px 0 10px;
}

.prompt-chips {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 12px;
}

.prompt-chips span {
  display: grid;
  min-height: 44px;
  place-items: center;
  padding: 8px;
  color: #60728f;
  background: #fff;
  border-color: #d5e1f1;
  border-radius: 999px;
  font-size: 17px;
}

.prompt-chips span.is-selected {
  color: #fff;
  background: #347fff;
  border-color: #347fff;
}

.prompt-button {
  width: 100%;
  height: 56px;
  margin-top: 20px;
  border-radius: 10px;
  font-size: 18px;
}

.flow-arrow {
  width: 100%;
  height: 70px;
  background: #c8dbff;
  border-radius: 8px;
  clip-path: polygon(0 36%, 70% 36%, 70% 0, 100% 50%, 70% 100%, 70% 64%, 0 64%);
}

.flow-arrow::before,
.flow-arrow::after {
  display: none;
}

.answer-box {
  padding: 30px 32px;
  border-color: #c8d9f1;
}

.answer-head {
  gap: 14px;
  padding-bottom: 18px;
}

.answer-avatar {
  flex: 0 0 52px;
  width: 52px;
  height: 52px;
  overflow: hidden;
  background: #f0f4fb;
}

.answer-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.answer-head b {
  font-size: 19px;
}

.answer-head small {
  font-size: 16px;
}

.recommendation {
  grid-template-columns: 50px minmax(0, 1fr) auto;
  gap: 16px;
  align-items: center;
  min-height: 92px;
  margin-top: 18px;
  padding: 18px 20px;
  background: #f2f6fd;
  border-radius: 14px;
}

.rank {
  width: 50px;
  height: 50px;
  font-size: 20px;
}

.recommendation b {
  font-size: 20px;
}

.recommendation p {
  margin-top: 6px;
  font-size: 16px;
}

.recommendation-metric {
  padding: 0;
  color: #246fff;
  background: transparent;
  border-radius: 0;
  font-size: 18px;
  white-space: nowrap;
}

.recommendation-secondary {
  min-height: 62px;
  padding-block: 12px;
  opacity: 0.48;
}

#features .tab-list,
#cases .tab-list {
  margin-bottom: 54px;
  padding: 7px;
  border-radius: 17px;
  box-shadow: 0 9px 24px rgba(27, 57, 107, 0.07);
}

#features .tab-button,
#cases .tab-button {
  padding: 14px 32px;
  border-radius: 12px;
  font-size: 20px;
}

.feature-panel {
  gap: 58px;
  min-height: 430px;
}

.feature-screenshot {
  min-height: 0;
  margin: 0;
  padding: 0;
  overflow: visible;
  background: transparent;
  border: 0;
  border-radius: 16px;
  box-shadow: none;
}

.feature-screenshot img {
  width: 100%;
  height: auto;
  display: block;
  border: 1px solid #dbe5f3;
  border-radius: 16px;
  box-shadow: 0 14px 34px rgba(31, 59, 104, 0.08);
}

.case-tabs .tab-list {
  margin-bottom: 48px;
}

.case-panel {
  grid-template-columns: 1.1fr 0.9fr;
  gap: 58px;
  min-height: 540px;
  padding: 44px 46px;
  border-color: #e2e9f2;
  border-radius: 24px;
  box-shadow: 0 15px 38px rgba(31, 60, 105, 0.06);
}

.case-copy h3 {
  margin-top: 18px;
  font-size: 42px;
  line-height: 1.18;
}

.case-copy > p {
  margin-bottom: 26px;
  color: #53647d;
  font-size: 18px;
  line-height: 1.7;
}

.case-proof {
  flex-wrap: wrap;
  min-height: 38px;
  margin-top: 28px;
}

.case-brand-logos {
  display: flex;
  flex: 1 1 220px;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}

.case-brand-logos img {
  width: auto;
  max-width: 116px;
  height: 26px;
  object-fit: contain;
}

.case-visual {
  min-height: 390px;
  margin: 0;
  overflow: hidden;
  background: #eef3f8;
  border-radius: 20px;
  box-shadow: none;
}

.case-visual-photo > img {
  width: 100%;
  height: 100%;
  min-height: 390px;
  display: block;
  object-fit: cover;
}

.proof-bubble {
  right: 6%;
  bottom: 6%;
  left: 6%;
  padding: 11px 13px;
  background: rgba(255, 255, 255, 0.96);
  border-color: rgba(255, 255, 255, 0.98);
  box-shadow: 0 8px 20px rgba(31, 54, 89, 0.15);
}

.faq-panel {
  display: block;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.35s ease, opacity 0.25s ease;
}

.faq-button[aria-expanded="true"] + .faq-panel {
  max-height: 360px;
  opacity: 1;
}

.faq-item:has(.faq-button[aria-expanded="true"]) .faq-panel {
  grid-template-rows: 1fr;
  max-height: 360px;
  opacity: 1;
}

.faq-button:focus-visible {
  outline: 3px solid rgba(11, 104, 255, 0.3);
  outline-offset: -3px;
}

@media (max-width: 1100px) {
  :root {
    --container: 920px;
  }

  .nav-wrap {
    width: min(calc(100% - 40px), var(--container));
  }

  .nav {
    gap: 22px;
  }

  .nav-cta {
    display: none;
  }

  .contact-rail,
  .back-to-top {
    display: none;
  }

  .floating-note.left {
    left: 2%;
  }

  .floating-note.right {
    right: 2%;
  }

  .feature-panel {
    gap: 42px;
  }

  .case-panel {
    gap: 30px;
  }
}

@media (max-width: 820px) {
  :root {
    --header-h: 64px;
  }

  .menu-toggle {
    display: block;
    margin-left: auto;
  }

  .header-brand {
    margin-left: 0;
  }

  .nav {
    position: fixed;
    inset: var(--header-h) 0 auto;
    max-height: 0;
    display: grid;
    gap: 0;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.98);
    border-bottom: 1px solid transparent;
    opacity: 0;
    margin-left: 0;
    transition:
      max-height 0.35s ease,
      opacity 0.25s ease,
      border-color 0.25s ease;
  }

  .nav.open {
    max-height: calc(100vh - var(--header-h));
    padding: 14px 20px 22px;
    border-color: var(--line);
    opacity: 1;
    box-shadow: 0 24px 44px rgba(30, 58, 100, 0.12);
  }

  .nav-link {
    padding: 14px 8px;
    border-bottom: 1px solid #eef2f6;
  }

  .nav-link::after {
    right: 8px;
    bottom: 9px;
    left: auto;
    width: 28px;
    transform: scaleX(0);
  }

  .nav-link:hover::after,
  .nav-link.active::after {
    transform: scaleX(1);
  }

  .hero {
    min-height: auto;
    padding: calc(var(--header-h) + 72px) 0 90px;
  }

  .hero::before,
  .hero::after {
    opacity: 0.42;
    transform: scale(0.75);
  }

  .hero h1 {
    font-size: clamp(38px, 6.4vw, 52px);
  }

  .hero-prompts {
    flex-direction: column;
    gap: 16px;
    margin-top: 48px;
    transform: none;
  }

  .hero-prompts li {
    width: min(100%, 410px);
    min-height: 52px;
    justify-content: flex-start;
    gap: 10px;
    padding: 7px 16px 7px 10px;
    font-size: clamp(18px, 2.7vw, 22px);
  }

  .hero-prompt-icon {
    width: 34px;
    height: 34px;
  }

  .hero-prompt-icon svg {
    width: 20px;
    height: 20px;
  }

  .hero-prompts li:nth-child(2),
  .hero-prompts li:nth-child(3) {
    margin-left: 0;
    font-size: clamp(18px, 2.7vw, 22px);
  }

  .hero-showcase {
    height: min(46vw, 360px);
    margin-top: 72px;
  }

  .hero-cta {
    margin-top: 56px;
  }

  .showcase-dashboard {
    width: min(78%, 680px);
  }

  .showcase-card-left {
    width: min(24%, 210px);
  }

  .showcase-card-right {
    width: min(25%, 220px);
  }

  .showcase-label {
    min-height: 38px;
    gap: 6px;
    padding: 0 14px;
    font-size: 14px;
  }

  .showcase-label::before {
    width: 3px;
    height: 18px;
  }

  .dashboard-stage {
    min-height: 355px;
  }

  .dashboard {
    width: 100%;
  }

  .floating-note {
    display: none;
  }

  .reason-card {
    grid-template-columns: 62px 1fr;
    padding: 24px;
  }

  .reason-stats {
    grid-column: 1 / -1;
    padding-left: 84px;
  }

  .feature-panel,
  .case-panel,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .solution-stage {
    grid-template-columns: 1fr;
  }

  .solution-image {
    min-height: 0;
    aspect-ratio: 16 / 9;
  }

  .solution-image img {
    min-height: 0;
  }

  .solution-content {
    min-height: 310px;
    padding: 42px 46px;
  }

  .solution-tab-list {
    grid-template-columns: 1fr;
  }

  .solution-tab {
    min-height: 92px;
    grid-template-columns: 54px minmax(0, 1fr);
    justify-items: start;
    align-content: center;
    gap: 16px;
    padding: 18px 28px;
    text-align: left;
    border-right: 0;
    border-bottom: 1px solid #dbe5f3;
  }

  .solution-tab:last-child {
    border-bottom: 0;
  }

  .ai-question {
    grid-template-columns: 1fr;
  }

  .flow-arrow {
    width: 80px;
    margin: 0 auto;
    transform: rotate(90deg);
  }

  .feature-panel {
    gap: 34px;
  }

  .case-panel {
    padding: 34px;
  }

  .footer-grid {
    grid-template-columns: 1.4fr repeat(3, 0.8fr);
    gap: 34px;
  }
}

@media (max-width: 600px) {
  :root {
    --radius: 19px;
  }

  .container {
    width: min(calc(100% - 28px), var(--container));
  }

  .site-header .brand-logo {
    height: 70px;
  }

  .site-footer .brand-logo {
    height: 86px;
    margin-left: -14px;
  }

  .hero {
    padding-bottom: 68px;
  }

  .hero::before,
  .hero::after {
    display: none;
  }

  .hero h1 {
    font-size: clamp(27px, 7.2vw, 34px);
    letter-spacing: -0.05em;
  }

  .hero h1 .hero-title-line + .hero-title-line {
    margin-top: 0.62em;
  }

  .hero-prompts {
    gap: 12px;
    margin-top: 42px;
  }

  .hero-prompts li {
    min-height: 48px;
    padding: 7px 14px 7px 9px;
    font-size: clamp(16px, 4.7vw, 19px);
    border-radius: 14px;
  }

  .hero-prompt-icon {
    width: 32px;
    height: 32px;
    border-radius: 9px;
  }

  .hero-prompt-icon svg {
    width: 18px;
    height: 18px;
  }

  .hero-prompts li:nth-child(3) {
    font-size: clamp(16px, 4.7vw, 19px);
  }

  .hero-showcase {
    height: 50vw;
    margin-top: 52px;
  }

  .showcase-dashboard {
    width: 100%;
  }

  .showcase-card,
  .showcase-label,
  .showcase-trace {
    display: none;
  }

  .hero .hero-caption {
    margin-top: 42px;
    font-size: 16px;
  }

  .hero-cta {
    width: min(100%, 260px);
    min-height: 54px;
    margin-top: 42px;
    font-size: 21px;
  }

  .dashboard-stage {
    min-height: 279px;
  }

  .dashboard {
    padding: 10px;
    border-radius: 14px;
    transform: none;
  }

  .dash-body {
    grid-template-columns: 1fr;
    min-height: 230px;
  }

  .dash-side {
    display: none;
  }

  .dash-main {
    padding: 12px 0 0;
  }

  .metric-row {
    grid-template-columns: repeat(2, 1fr);
  }

  .metric:nth-child(n + 3) {
    display: none;
  }

  .chart-row {
    grid-template-columns: 1fr 0.7fr;
  }

  .bar-row {
    display: none;
  }

  .section {
    padding: 82px 0;
  }

  .section-heading {
    margin-bottom: 40px;
  }

  .section-heading h2 {
    font-size: 34px;
  }

  .reason-card {
    grid-template-columns: 48px 1fr;
    gap: 13px;
    padding: 22px 18px;
  }

  .reason-index {
    font-size: 40px;
  }

  .reason-stats {
    grid-template-columns: 1fr;
    padding-left: 61px;
  }

  .reason-stat {
    grid-template-columns: 13px auto minmax(0, 1fr);
    grid-template-rows: auto;
    column-gap: 8px;
    align-items: center;
  }

  .reason-stat::before {
    grid-column: 1;
    grid-row: 1;
  }

  .reason-stat b {
    grid-column: 2;
    grid-row: 1;
    font-size: 17px;
    line-height: 1.45;
  }

  .reason-stat small {
    grid-column: 3;
    grid-row: 1;
  }

  .solution-explorer {
    border-radius: 20px;
  }

  .solution-content {
    min-height: 0;
    padding: 30px 24px 34px;
  }

  .solution-capability-panel h3 {
    margin-bottom: 14px;
    font-size: 29px;
  }

  .solution-capability-panel p {
    font-size: 16px;
    line-height: 1.75;
  }

  .solution-tab {
    min-height: 82px;
    grid-template-columns: 46px minmax(0, 1fr);
    gap: 13px;
    padding: 14px 18px;
    font-size: 16px;
  }

  .solution-tab-icon {
    width: 46px;
    height: 46px;
  }

  .solution-tab-icon svg {
    width: 23px;
    height: 23px;
  }

  .prompt-box,
  .answer-box {
    min-height: auto;
    padding: 20px;
  }

  .tab-list {
    width: 100%;
    justify-content: flex-start;
    margin-bottom: 30px;
  }

  .tab-button {
    padding: 9px 15px;
  }

  .feature-copy h3 {
    font-size: 29px;
  }

  .feature-visual {
    min-height: 335px;
    padding: 14px;
  }

  .mini-metrics div:nth-child(n + 4) {
    display: none;
  }

  .mini-metrics {
    grid-template-columns: repeat(3, 1fr);
  }

  .mini-grid {
    grid-template-columns: 1fr;
  }

  .case-panel {
    gap: 26px;
    padding: 24px;
  }

  .case-copy h3 {
    font-size: 30px;
  }

  .case-visual {
    min-height: 330px;
  }

  .faq-button {
    padding-inline: 16px;
    font-size: 16px;
  }

  .faq-panel p {
    padding: 0 22px 22px 36px;
  }

  .contact-grid {
    gap: 42px;
  }

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

  .footer-about {
    grid-column: 1 / -1;
  }

  .footer-bottom {
    align-items: center;
    flex-direction: column;
    text-align: center;
  }

  .footer-legal {
    flex-wrap: wrap;
    justify-content: center;
    margin-left: 0;
    text-align: center;
  }

  .back-to-top {
    right: 16px;
    bottom: 16px;
  }
}

/* v1.9 响应式覆盖 */
@media (max-width: 820px) {
  .hero-cta {
    width: min(100%, 210px);
    min-height: 50px;
    margin-top: 52px;
    font-size: 18px;
  }

  .hero-showcase {
    margin-top: 44px;
  }

  .hero .hero-caption {
    margin-top: 30px;
  }

  .hero-prompts {
    margin-top: 28px;
  }

  .reason-index {
    font-size: 58px;
  }

  .reason-stat b {
    font-size: 22px;
  }

  .flow-arrow {
    width: 82px;
    height: 66px;
    transform: rotate(90deg);
  }

  #features .tab-list,
  #cases .tab-list {
    margin-bottom: 36px;
  }

  #features .tab-button,
  #cases .tab-button {
    padding: 12px 26px;
    font-size: 18px;
  }

  .feature-screenshot {
    width: min(100%, 760px);
    margin-inline: auto;
  }

  .case-panel {
    gap: 34px;
  }

  .case-visual {
    width: min(100%, 580px);
    min-height: 380px;
    margin-inline: auto;
  }
}

@media (max-width: 600px) {
  .hero-cta {
    width: min(100%, 174px);
    min-height: 46px;
    margin-top: 38px;
    font-size: 17px;
  }

  .hero-showcase {
    margin-top: 34px;
  }

  .hero .hero-caption {
    margin-top: 28px;
  }

  .hero-prompts {
    margin-top: 25px;
  }

  .reason-index {
    font-size: 50px;
  }

  .reason-stat b {
    font-size: 19px;
  }

  .solution-overview p {
    font-size: 16px;
    line-height: 1.75;
  }

  #features .tab-button,
  #cases .tab-button {
    padding: 11px 20px;
    font-size: 17px;
  }

  .feature-screenshot {
    min-height: 0;
    padding: 0;
    border: 0;
    box-shadow: none;
  }

  .feature-screenshot img {
    border-radius: 12px;
  }

  .case-panel {
    gap: 28px;
    padding: 24px;
  }

  .case-copy h3 {
    font-size: 35px;
  }

  .case-visual,
  .case-visual-photo > img {
    min-height: 320px;
  }

  .case-brand-logos img {
    max-width: 102px;
    height: 24px;
  }

  .proof-bubble {
    font-size: 13px;
  }
}

/* WHY GEO 响应式数据卡片覆盖 */
@media (max-width: 1100px) {
  .hero {
    overflow: hidden;
  }

  .reason-card {
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 22px;
    padding: 26px 30px;
  }

  .reason-index {
    height: 82px;
    padding-right: 22px;
    font-size: 72px;
  }

  .reason-stats {
    grid-column: 2;
    padding-left: 0;
  }

  .ai-question {
    grid-template-columns: minmax(0, 0.82fr) 96px minmax(0, 1.18fr);
    gap: 18px;
  }

  .prompt-box,
  .answer-box {
    min-width: 0;
    padding: 24px;
  }

  .answer-box {
    padding-inline: 26px;
  }

  .flow-arrow {
    width: 96px;
  }
}

@media (max-width: 600px) {
  .reason-card {
    grid-template-columns: 68px minmax(0, 1fr);
    gap: 14px;
    min-height: 0;
    padding: 20px 18px;
    border-radius: 16px;
  }

  .reason-index {
    height: 70px;
    padding-right: 14px;
    font-size: 56px;
  }

  .reason-copy h3 {
    margin-bottom: 6px;
    font-size: 19px;
  }

  .reason-copy p {
    font-size: 13px;
    line-height: 1.65;
  }

  .reason-stats {
    grid-column: 1 / -1;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
    padding-left: 0;
  }

  .reason-stat {
    min-height: 76px;
    padding: 10px 6px;
    border-radius: 12px;
  }

  .reason-stat b {
    font-size: 18px;
    white-space: nowrap;
  }

  .reason-stat small {
    margin-top: 5px;
    font-size: 10px;
    line-height: 1.3;
  }

  .recommendation {
    grid-template-columns: 42px minmax(0, 1fr);
    gap: 10px;
    min-height: 0;
    padding: 14px;
  }

  .rank {
    width: 42px;
    height: 42px;
    font-size: 17px;
  }

  .recommendation b {
    font-size: 16px;
  }

  .recommendation p {
    font-size: 13px;
  }

  .recommendation-metric {
    grid-column: 2;
    justify-self: start;
    font-size: 15px;
  }

  .ai-question {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
  }

  .prompt-box,
  .answer-box {
    min-width: 0;
    padding: 20px;
  }

  .answer-box {
    padding-inline: 20px;
  }

  .flow-arrow {
    width: 82px;
    height: 66px;
    margin: 0 auto;
    transform: rotate(90deg);
  }
}

/* v2.0：首屏贯穿能力栏、数据加载与输入卡层级 */
.hero {
  min-height: clamp(1160px, 78.9vw, 1515px);
}

.hero .hero-caption {
  margin-top: 76px;
}

.hero-prompts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  width: 100%;
  margin-top: 48px;
  overflow: hidden;
  background:
    linear-gradient(105deg, rgba(239, 246, 255, 0.92), rgba(255, 255, 255, 0.98) 49%, rgba(235, 244, 255, 0.94)),
    #f7fbff;
  border: 1px solid #d5e5fc;
  border-radius: 20px;
  box-shadow: 0 16px 38px rgba(32, 80, 156, 0.09), inset 0 1px 0 #fff;
}

.hero-prompts li,
.hero-prompts li:nth-child(2),
.hero-prompts li:nth-child(3) {
  position: relative;
  min-width: 0;
  min-height: 106px;
  justify-content: center;
  gap: 16px;
  margin: 0;
  padding: 20px 30px;
  color: #17345f;
  background: transparent;
  border: 0;
  border-radius: 0;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.025em;
  white-space: normal;
}

.hero-prompts li + li::before {
  content: "";
  position: absolute;
  top: 23px;
  bottom: 23px;
  left: 0;
  width: 1px;
  background: linear-gradient(180deg, transparent, #c8dcf9 18%, #c8dcf9 82%, transparent);
}

.hero-prompt-icon {
  width: 50px;
  height: 50px;
  color: #146aff;
  background: linear-gradient(145deg, #e8f2ff, #d8eaff);
  border: 1px solid #b9d5ff;
  border-radius: 16px;
  box-shadow: 0 9px 18px rgba(30, 108, 255, 0.12), inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.hero-prompt-icon svg {
  width: 28px;
  height: 28px;
  stroke-width: 2;
}

.hero-prompt-text {
  max-width: 260px;
  text-align: left;
}

@media (hover: hover) and (pointer: fine) {
  .hero-prompts li:hover {
    color: #075ce9;
    background: rgba(222, 237, 255, 0.44);
  }

  .hero-prompts li:hover .hero-prompt-icon {
    color: #fff;
    background: #1268f5;
    border-color: #1268f5;
    transform: translateY(-2px);
  }
}

.reason-stat b {
  font-variant-numeric: tabular-nums;
}

.solution-tab {
  min-height: 166px;
  gap: 16px;
  font-size: 19px;
}

.solution-tab-icon {
  --solution-icon-cut: #edf4ff;
  width: 88px;
  height: 88px;
  color: #1268f5;
  background: radial-gradient(circle at 32% 24%, #fff 0 8%, #e8f2ff 45%, #d7e9ff 100%);
  border: 1px solid #bdd8ff;
  border-radius: 28px;
  box-shadow: 0 13px 27px rgba(34, 104, 230, 0.14), inset 0 1px 0 #fff;
}

.solution-tab-icon svg {
  width: 50px;
  height: 50px;
  fill: none;
  stroke: none;
}

.solution-tab-icon svg .icon-fill {
  fill: currentColor;
  stroke: none;
}

.solution-tab-icon svg .icon-cut {
  fill: var(--solution-icon-cut);
  stroke: none;
}

.solution-tab-icon svg .icon-cut-stroke {
  fill: none;
  stroke: var(--solution-icon-cut);
  stroke-width: 2.4;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.solution-tab[aria-selected="true"] .solution-tab-icon {
  --solution-icon-cut: #1268f5;
  color: #fff;
  background: linear-gradient(145deg, #237dff, #0759e5);
  border-color: #0759e5;
  box-shadow: 0 16px 30px rgba(11, 91, 229, 0.28), inset 0 1px 0 rgba(255, 255, 255, 0.26);
  transform: translateY(-3px) scale(1.03);
}

.prompt-box {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: 28px;
  background: linear-gradient(145deg, #f9fbff, #edf5ff 100%);
  border-color: #c5dcfb;
  box-shadow: 0 18px 38px rgba(31, 83, 163, 0.1), inset 0 1px 0 #fff;
}

.prompt-box::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: -88px;
  right: -62px;
  width: 230px;
  height: 230px;
  background: radial-gradient(circle, rgba(71, 138, 255, 0.18), rgba(71, 138, 255, 0) 67%);
  pointer-events: none;
}

.prompt-box > * {
  position: relative;
  z-index: 1;
}

.prompt-kicker {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 11px;
  color: #1767ed;
  background: #e0edff;
  border: 1px solid #c7ddff;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 760;
  letter-spacing: 0.02em;
}

.prompt-search {
  min-height: 78px;
  height: auto;
  margin-top: 14px;
  padding: 17px 18px;
  color: #193761;
  background: #fff;
  border-color: #b9d4fa;
  border-radius: 14px;
  box-shadow: 0 8px 18px rgba(38, 89, 164, 0.06);
  font-size: 17px;
  font-weight: 600;
  line-height: 1.55;
}

.prompt-search::before {
  content: none;
}

.prompt-label {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 20px 0 11px;
  color: #49678f;
  font-size: 14px;
  font-weight: 700;
}

.prompt-label::before {
  content: "";
  width: 6px;
  height: 6px;
  background: #1a70f8;
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(26, 112, 248, 0.1);
}

.prompt-chips span {
  box-shadow: 0 4px 10px rgba(42, 87, 157, 0.04);
}

.prompt-button {
  box-shadow: 0 11px 22px rgba(26, 102, 243, 0.22);
}

@media (max-width: 1100px) {
  .hero {
    min-height: 1160px;
  }

  .hero-prompts li,
  .hero-prompts li:nth-child(2),
  .hero-prompts li:nth-child(3) {
    gap: 12px;
    padding-inline: 20px;
    font-size: 17px;
  }

  .hero-prompt-icon {
    width: 44px;
    height: 44px;
    border-radius: 14px;
  }

  .hero-prompt-icon svg {
    width: 25px;
    height: 25px;
  }

  .solution-tab-icon {
    width: 76px;
    height: 76px;
    border-radius: 24px;
  }

  .solution-tab-icon svg {
    width: 43px;
    height: 43px;
  }
}

@media (max-width: 820px) {
  .hero {
    min-height: auto;
  }

  .hero .hero-caption {
    margin-top: 46px;
  }

  .hero-prompts {
    grid-template-columns: 1fr;
    margin-top: 34px;
    border-radius: 16px;
  }

  .hero-prompts li,
  .hero-prompts li:nth-child(2),
  .hero-prompts li:nth-child(3) {
    min-height: 74px;
    justify-content: flex-start;
    padding: 14px 20px;
    font-size: 18px;
  }

  .hero-prompts li + li::before {
    top: 0;
    right: 20px;
    bottom: auto;
    left: 20px;
    width: auto;
    height: 1px;
    background: #d7e5fa;
  }

  .hero-prompt-text {
    max-width: none;
  }

  .solution-tab {
    min-height: 104px;
  }
}

@media (max-width: 600px) {
  .hero .hero-caption {
    margin-top: 42px;
  }

  .hero-prompts {
    margin-top: 30px;
  }

  .hero-prompts li,
  .hero-prompts li:nth-child(2),
  .hero-prompts li:nth-child(3) {
    min-height: 66px;
    gap: 12px;
    padding: 12px 15px;
    font-size: 16px;
  }

  .hero-prompt-icon {
    width: 40px;
    height: 40px;
    border-radius: 13px;
  }

  .hero-prompt-icon svg {
    width: 23px;
    height: 23px;
  }

  .solution-tab-icon {
    width: 64px;
    height: 64px;
    border-radius: 21px;
  }

  .solution-tab-icon svg {
    width: 37px;
    height: 37px;
  }

  .prompt-box {
    padding: 20px;
  }

  .prompt-search {
    min-height: 68px;
    padding: 14px;
    font-size: 15px;
  }
}

/* v2.1：首屏贯穿栏、模型切换、案例与快捷入口精修 */
.hero {
  min-height: clamp(1140px, 70.47vw, 1353px);
  padding-bottom: 0;
}

.hero h1 {
  order: 1;
}

.hero-showcase {
  order: 2;
  margin-top: clamp(118px, 7.4vw, 142px);
}

.hero .hero-cta {
  order: 3;
  margin-top: 44px;
}

.hero .hero-caption {
  order: 4;
  margin-top: 24px;
}

.hero-prompts {
  order: 5;
  align-self: stretch;
  width: 100vw;
  min-height: 112px;
  margin: 50px calc(50% - 50vw) 0;
  overflow: hidden;
  border: 0;
  border-top: 1px solid #cfdef4;
  border-radius: 0;
  box-shadow: 0 -10px 28px rgba(35, 88, 168, 0.06), inset 0 1px 0 rgba(255, 255, 255, 0.95);
}

.hero-prompts li,
.hero-prompts li:nth-child(2),
.hero-prompts li:nth-child(3) {
  min-height: 112px;
  background: transparent;
}

.site-header .nav-cta {
  min-width: 120px;
  min-height: 36px;
  padding-inline: 16px;
  border-radius: 9px;
  font-size: 15px;
}

.prompt-chips button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 10px;
  color: #526b91;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid #d3e2f7;
  border-radius: 12px;
  box-shadow: 0 4px 10px rgba(42, 87, 157, 0.04);
  cursor: pointer;
  font: inherit;
  font-size: 16px;
  font-weight: 750;
  line-height: 1;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.prompt-chips button .model-chip-icon {
  display: grid;
  width: 24px;
  height: 24px;
  place-items: center;
  padding: 0;
  color: #196bf2;
  background: #e4f0ff;
  border: 0;
  border-radius: 8px;
  box-shadow: none;
  font-size: 13px;
  font-weight: 850;
}

.prompt-chips button.is-selected {
  color: #fff;
  background: linear-gradient(135deg, #287bff, #1262e8);
  border-color: #1262e8;
  box-shadow: 0 9px 18px rgba(30, 103, 239, 0.24);
}

.prompt-chips button.is-selected .model-chip-icon {
  color: #1767ea;
  background: #fff;
}

@media (hover: hover) and (pointer: fine) {
  .prompt-chips button:not(.is-selected):hover {
    color: #1767ea;
    border-color: #9fc6ff;
    box-shadow: 0 8px 16px rgba(31, 97, 190, 0.1);
    transform: translateY(-1px);
  }
}

.answer-model-icon {
  display: grid;
  place-items: center;
  overflow: hidden;
  color: #fff;
  border: 0;
  border-radius: 16px;
  box-shadow: 0 8px 16px rgba(27, 80, 160, 0.16);
}

.answer-model-icon > span {
  font-size: 20px;
  font-weight: 900;
  line-height: 1;
}

.answer-model-icon.model-doubao { background: linear-gradient(145deg, #3d8cff, #1263e7); }
.answer-model-icon.model-qwen { background: linear-gradient(145deg, #ff7e55, #e64f2e); }
.answer-model-icon.model-deepseek { background: linear-gradient(145deg, #6d78f8, #3748c9); }
.answer-model-icon.model-yuanbao { background: linear-gradient(145deg, #28bb98, #0c8f75); }

.answer-query {
  margin: 16px 0 13px;
  color: #627594;
  font-size: 15px;
  line-height: 1.55;
}

.answer-box.is-updated {
  animation: answerResultRefresh 0.48s ease both;
}

@keyframes answerResultRefresh {
  from { opacity: 0.62; transform: translateY(7px); }
  to { opacity: 1; transform: translateY(0); }
}

#cases {
  padding-top: 76px;
}

#cases .section-heading {
  margin-bottom: 46px;
}

#cases .case-tabs .tab-list {
  margin-bottom: 36px;
}

.case-copy .metric-badge {
  padding: 9px 18px;
  border: 1px solid #c7defd;
  box-shadow: 0 7px 16px rgba(24, 102, 238, 0.08);
  font-size: 18px;
}

.case-proof {
  min-height: 48px;
  margin-top: 22px;
}

.proof-logo {
  display: none;
}

.case-brand-logos {
  flex-basis: 100%;
  gap: 18px;
}

.case-brand-logos img {
  max-width: 156px;
  height: 36px;
  image-rendering: auto;
  filter: contrast(1.04) saturate(1.04);
}

.contact-rail {
  right: clamp(22px, 2.2vw, 42px);
  bottom: 130px;
  width: 64px;
  border-radius: 21px;
}

.contact-rail a {
  min-height: 104px;
  gap: 8px;
  font-size: 15px;
}

.contact-rail-icon {
  width: 34px;
  height: 34px;
  border-radius: 11px;
}

.contact-rail-icon svg {
  width: 20px;
  height: 20px;
}

.back-to-top {
  right: clamp(26px, 2.5vw, 48px);
  bottom: 42px;
  width: 58px;
  height: 64px;
  border-radius: 18px;
}

.back-to-top svg {
  width: 28px;
  height: 28px;
}

@media (max-width: 1100px) {
  .hero {
    min-height: 1120px;
  }

  .hero-showcase {
    margin-top: 104px;
  }

  .hero-prompts li,
  .hero-prompts li:nth-child(2),
  .hero-prompts li:nth-child(3) {
    width: 100%;
    min-height: 104px;
  }

  .case-brand-logos img {
    max-width: 140px;
    height: 33px;
  }
}

@media (max-width: 820px) {
  .hero {
    min-height: auto;
    padding-bottom: 48px;
  }

  .hero-showcase {
    margin-top: 72px;
  }

  .hero .hero-cta {
    margin-top: 36px;
  }

  .hero .hero-caption {
    margin-top: 20px;
  }

  .hero-prompts {
    width: calc(100% + 40px);
    min-height: 0;
    margin: 34px -20px 0;
    border-radius: 0;
  }

  .hero-prompts li,
  .hero-prompts li:nth-child(2),
  .hero-prompts li:nth-child(3) {
    min-height: 70px;
  }

  .prompt-chips button {
    min-height: 44px;
    font-size: 15px;
  }

  #cases {
    padding-top: 66px;
  }

  .case-copy .metric-badge {
    font-size: 16px;
  }
}

@media (max-width: 600px) {
  .site-header .nav-cta {
    min-width: 104px;
    min-height: 34px;
    font-size: 14px;
  }

  .hero-showcase {
    margin-top: 56px;
  }

  .hero-prompts {
    margin-top: 28px;
  }

  .hero-prompts li,
  .hero-prompts li:nth-child(2),
  .hero-prompts li:nth-child(3) {
    min-height: 64px;
  }

  .case-brand-logos img {
    max-width: 126px;
    height: 30px;
  }
}

/* v2.1：末轮首屏节奏与数字对齐 */
.hero {
  min-height: clamp(1172px, 72.3vw, 1388px);
}

.hero .hero-cta {
  margin-top: 58px;
}

.hero .hero-caption {
  margin-top: 34px;
}

.hero-prompts {
  margin-top: 60px;
}

.hero-prompt-icon {
  position: relative;
  width: 54px;
  height: 54px;
  color: #0e66f5;
  background: radial-gradient(circle at 35% 30%, #fff 0 14%, #e8f2ff 43%, #cfe4ff 100%);
  border: 2px solid rgba(77, 146, 255, 0.66);
  border-radius: 50%;
  box-shadow: 0 10px 20px rgba(22, 103, 241, 0.16), inset 0 1px 0 #fff;
}

.hero-prompt-icon::before {
  content: "";
  position: absolute;
  inset: -6px;
  border: 1px solid rgba(65, 136, 250, 0.24);
  border-radius: inherit;
  pointer-events: none;
}

.hero-prompt-icon svg {
  position: relative;
  z-index: 1;
  width: 29px;
  height: 29px;
  stroke-width: 2.25;
}

.reason-index {
  display: flex;
  width: 92px;
  align-items: center;
  justify-content: space-between;
  padding-right: 30px;
  font-family: Arial, Helvetica, sans-serif;
  font-feature-settings: "tnum" 1;
  letter-spacing: 0;
}

.reason-index > span {
  display: block;
}

@media (hover: hover) and (pointer: fine) {
  .reason-card:hover .reason-index > span {
    color: transparent;
    background: linear-gradient(to bottom, #91bbff 0%, #3180ff 28%, #dceaff 48%, #1264ee 63%, #91bbff 100%);
    background-size: 100% 220%;
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: reasonIndexVerticalFlow 1.35s linear infinite;
  }
}

@media (max-width: 820px) {
  .hero {
    min-height: auto;
  }

  .hero .hero-cta {
    margin-top: 42px;
  }

  .hero .hero-caption {
    margin-top: 26px;
  }

  .hero-prompts {
    margin-top: 42px;
  }

  .reason-index {
    width: 62px;
    padding-right: 16px;
  }
}

@media (max-width: 600px) {
  .hero .hero-cta {
    margin-top: 36px;
  }

  .hero .hero-caption {
    margin-top: 22px;
  }

  .hero-prompts {
    margin-top: 34px;
  }

  .reason-index {
    width: 54px;
    padding-right: 10px;
  }
}

/* v2.1：AI 问答模型标识与文字选项 */
.prompt-chips button {
  gap: 0;
  padding-inline: 14px;
}

.prompt-button {
  appearance: none;
  border: 0;
  outline: 0;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.prompt-button:focus-visible {
  outline: 3px solid rgba(44, 128, 255, 0.32);
  outline-offset: 3px;
}

.answer-model-icon {
  display: block;
  box-sizing: border-box;
  padding: 5px;
  background: #f5f8ff !important;
  object-fit: contain;
  object-position: center;
}

.answer-model-icon.model-doubao {
  padding: 0;
  object-fit: cover;
}

.answer-model-icon.model-qwen {
  padding: 8px;
}

.answer-model-icon.model-deepseek,
.answer-model-icon.model-yuanbao {
  padding: 5px;
}

/* v2.2：首屏信息带、问答切换与标签栏精修 */
.hero {
  min-height: clamp(1172px, 73.85vw, 1418px);
  background:
    linear-gradient(180deg, rgba(248, 251, 255, 0.28), rgba(245, 249, 255, 0.1)),
    radial-gradient(circle at 4% 20%, rgba(78, 139, 255, 0.14), rgba(78, 139, 255, 0.045) 18%, transparent 34%),
    radial-gradient(circle at 96% 40%, rgba(91, 151, 255, 0.12), rgba(91, 151, 255, 0.038) 17%, transparent 32%),
    url("./images/v2.2/hero-background-v2.2.webp") center / cover no-repeat,
    #f4f7fc;
}

.hero-prompt-band {
  order: 5;
  align-self: stretch;
  width: 100vw;
  margin: 60px calc(50% - 50vw) 0;
}

.hero-prompts {
  display: flex;
  position: relative;
  order: initial;
  align-self: auto;
  width: 100%;
  margin: 0;
  min-height: 142px;
  background:
    linear-gradient(90deg, rgba(218, 238, 255, 0.8), rgba(244, 250, 255, 0.8) 50%, rgba(218, 238, 255, 0.8)),
    linear-gradient(180deg, rgba(255, 255, 255, 0.34), rgba(215, 237, 255, 0.25));
  border-top-color: rgba(191, 218, 250, 0.88);
  box-shadow: 0 -12px 32px rgba(35, 88, 168, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.hero-prompts::before {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 58%;
  pointer-events: none;
  background:
    radial-gradient(ellipse 42% 42% at 8% 100%, rgba(255, 255, 255, 0.84), transparent 70%),
    radial-gradient(ellipse 36% 38% at 93% 100%, rgba(255, 255, 255, 0.72), transparent 70%),
    linear-gradient(106deg, transparent 8%, rgba(255, 255, 255, 0.66) 23%, transparent 40%, rgba(255, 255, 255, 0.56) 70%, transparent 90%);
  opacity: 0.72;
}

.hero-prompts li,
.hero-prompts li:nth-child(2),
.hero-prompts li:nth-child(3) {
  z-index: 1;
  flex: 1 1 0;
  min-height: 142px;
  justify-content: center;
  gap: clamp(17px, 1.5vw, 28px);
  padding: 18px clamp(20px, 2vw, 42px);
}

.hero-prompt-icon {
  width: clamp(82px, 5.45vw, 104px);
  height: clamp(82px, 5.45vw, 104px);
  color: inherit;
  background: transparent;
  border: 0;
  border-radius: 0;
  box-shadow: none;
}

.hero-prompt-icon::before,
.hero-prompt-icon svg {
  display: none;
}

.hero-prompt-icon img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  --icon-direction: 1;
  filter: drop-shadow(0 11px 11px rgba(43, 109, 201, 0.13));
  transform: scaleX(var(--icon-direction));
  transition: transform 0.28s ease, filter 0.28s ease;
}

.hero-prompts li:nth-child(3) .hero-prompt-icon img {
  --icon-direction: -1;
}

.hero-prompt-copy {
  display: grid;
  gap: 8px;
  min-width: 0;
  text-align: left;
}

.hero-prompt-copy strong {
  color: #0c4f9f;
  font-size: clamp(19px, 1.46vw, 28px);
  font-weight: 790;
  line-height: 1.2;
  letter-spacing: -0.035em;
}

.hero-prompt-copy small {
  color: #637a9d;
  font-size: clamp(13px, 0.94vw, 18px);
  font-weight: 500;
  line-height: 1.45;
  letter-spacing: -0.02em;
}

@media (hover: hover) and (pointer: fine) {
  .hero-prompts li:hover {
    color: inherit;
    background: rgba(255, 255, 255, 0.28);
  }

  .hero-prompts li:hover .hero-prompt-icon {
    color: inherit;
    background: transparent;
    border-color: transparent;
    transform: none;
  }

  .hero-prompts li:hover .hero-prompt-icon img {
    filter: drop-shadow(0 14px 15px rgba(28, 107, 219, 0.21));
    transform: scaleX(var(--icon-direction)) translateY(-3px);
  }
}

.prompt-search {
  min-height: 94px;
  height: auto;
  padding: 17px 18px;
  font-size: 21px;
  font-weight: 760;
  line-height: 1.52;
}

.prompt-chips button,
.prompt-chips button.is-selected {
  font-weight: 520;
}

.answer-query {
  color: #425f89;
  font-size: 21px;
  font-weight: 760;
  line-height: 1.52;
}

.recommendation-metric {
  display: flex;
  min-width: 104px;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
  padding: 0;
  color: #607796;
  background: transparent;
  font-style: normal;
  line-height: 1;
}

.recommendation-metric span {
  font-size: 14px;
  font-weight: 650;
  letter-spacing: 0.02em;
}

.recommendation-metric strong {
  color: #166af4;
  font-size: 34px;
  font-weight: 840;
  letter-spacing: -0.06em;
}

#features .tab-list,
#cases .tab-list {
  display: flex;
  width: min(100%, 864px);
  margin: 0 auto 54px;
  padding: 6px;
  overflow: visible;
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid #dce6f1;
  border-radius: 19px;
  box-shadow: 0 12px 26px rgba(27, 57, 107, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.95);
}

#features .tab-list {
  width: min(100%, 784px);
}

#features .tab-button,
#cases .tab-button {
  min-width: 0;
  min-height: 60px;
  flex: 1 1 0;
  padding: 10px 16px;
  color: #475b78;
  border-radius: 13px;
  font-size: 20px;
  font-weight: 770;
  white-space: nowrap;
}

#features .tab-button[aria-selected="true"],
#cases .tab-button[aria-selected="true"] {
  color: #fff;
  background: #1168f4;
  box-shadow: 0 9px 19px rgba(17, 104, 244, 0.26);
  text-shadow: 0 1px 1px rgba(5, 58, 154, 0.16);
}

.feature-panel {
  gap: clamp(112px, 7.8vw, 150px);
}

.case-panel {
  gap: clamp(112px, 7.8vw, 150px);
}

.solution-stage {
  grid-template-columns: minmax(360px, 0.74fr) minmax(0, 1.26fr);
  gap: clamp(68px, 5vw, 96px);
}

.solution-content {
  padding: 48px 58px 48px 24px;
}

@media (max-width: 1100px) {
  .hero-prompts {
    min-height: 124px;
  }

  .hero-prompts li,
  .hero-prompts li:nth-child(2),
  .hero-prompts li:nth-child(3) {
    min-height: 124px;
    gap: 16px;
    padding-inline: 18px;
  }

  .hero-prompt-icon {
    width: 76px;
    height: 76px;
  }

  .hero-prompt-copy strong {
    font-size: 20px;
  }

  .hero-prompt-copy small {
    font-size: 14px;
  }

  .prompt-search,
  .answer-query {
    font-size: 18px;
  }

  .feature-panel,
  .case-panel {
    gap: 42px;
  }

  .solution-stage {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .solution-content {
    padding: 40px 44px;
  }
}

@media (max-width: 820px) {
  .hero-prompt-band {
    width: calc(100% + 40px);
    margin: 42px -20px 0;
  }

  .hero-prompts {
    flex-direction: column;
    min-height: 0;
    background: linear-gradient(180deg, rgba(224, 241, 255, 0.82), rgba(246, 251, 255, 0.82));
  }

  .hero-prompts::before {
    height: 42%;
  }

  .hero-prompts li,
  .hero-prompts li:nth-child(2),
  .hero-prompts li:nth-child(3) {
    min-height: 104px;
    gap: 20px;
    padding: 16px 26px;
  }

  .hero-prompt-icon {
    width: 74px;
    height: 74px;
  }

  .hero-prompt-copy strong {
    font-size: 20px;
  }

  #features .tab-list,
  #cases .tab-list {
    width: max-content;
    max-width: 100%;
    margin-bottom: 38px;
    overflow-x: auto;
  }

  #features .tab-button,
  #cases .tab-button {
    min-width: max-content;
    min-height: 56px;
    flex: 0 0 auto;
    padding-inline: 22px;
    font-size: 18px;
  }
}

@media (max-width: 600px) {
  .hero-prompt-band {
    margin-top: 34px;
  }

  .hero-prompts li,
  .hero-prompts li:nth-child(2),
  .hero-prompts li:nth-child(3) {
    min-height: 92px;
    gap: 15px;
    padding: 13px 18px;
  }

  .hero-prompt-icon {
    width: 64px;
    height: 64px;
  }

  .hero-prompt-copy {
    gap: 4px;
  }

  .hero-prompt-copy strong {
    font-size: 17px;
  }

  .hero-prompt-copy small {
    font-size: 12px;
  }

  .prompt-search {
    min-height: 78px;
    font-size: 16px;
  }

  .answer-query {
    font-size: 16px;
  }

  .recommendation-metric {
    grid-column: 2;
    justify-self: start;
    align-items: flex-start;
  }

  .recommendation-metric strong {
    font-size: 28px;
  }
}

/* v2.3：首屏卡片圆角与 WHY GEO 数据校准 */
.showcase-card {
  overflow: hidden;
  border-radius: 22px;
  clip-path: inset(2px round 22px);
}

.reason-index {
  position: relative;
  border-right: 0;
}

.reason-index::after {
  content: "";
  position: absolute;
  top: 0;
  right: -2px;
  bottom: 0;
  width: 1px;
  background: #d6e3f7;
  pointer-events: none;
}

@media (min-width: 1101px) {
  .reason-card {
    grid-template-columns: 132px minmax(250px, 0.82fr) minmax(540px, 1.68fr);
    column-gap: 50px;
  }

  .reason-copy p {
    max-width: 320px;
  }
}

/* v2.3：解决方案内容区补充轻量能力数据，不复用底部能力图标 */
.solution-panel-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid #e2ebf8;
}

.solution-panel-metrics span {
  position: relative;
  display: grid;
  align-content: center;
  gap: 5px;
  min-width: 0;
  padding: 0 18px;
}

.solution-panel-metrics span + span {
  border-left: 1px solid #e1eaf7;
}

.solution-panel-metrics span::before {
  content: "";
  width: 18px;
  height: 3px;
  margin-bottom: 2px;
  background: linear-gradient(90deg, #0c67f4, #74b4ff);
  border-radius: 999px;
}

.solution-panel-metrics b {
  overflow: hidden;
  color: #155fc9;
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.045em;
  line-height: 1.08;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.solution-panel-metrics small {
  overflow: hidden;
  color: #6a7c99;
  font-size: 13px;
  font-weight: 560;
  line-height: 1.35;
  text-overflow: ellipsis;
  white-space: nowrap;
}

@media (max-width: 1100px) {
  .solution-panel-metrics {
    margin-top: 24px;
    padding-top: 18px;
  }
}

@media (max-width: 600px) {
  .solution-panel-metrics {
    margin-top: 20px;
    padding-top: 15px;
  }

  .solution-panel-metrics span {
    gap: 3px;
    padding: 0 10px;
  }

  .solution-panel-metrics span::before {
    width: 14px;
    height: 2px;
  }

  .solution-panel-metrics b {
    font-size: 20px;
  }

  .solution-panel-metrics small {
    font-size: 10px;
  }
}

/* v2.3：AI 问答切换节奏与引导箭头 */
.flow-arrow {
  --flow-angle: 0deg;
  --flow-offset-y: 0px;
  width: min(calc(100% + var(--ai-flow-gap, 28px) + var(--ai-flow-overlap, 18px)), 204px);
  height: clamp(94px, 8.25vw, 156px);
  margin-right: 0;
  margin-left: calc(0px - var(--ai-flow-gap, 28px) - var(--ai-flow-overlap, 18px));
  /* 拉伸到完整容器，消除原图左右的透明留白；横向长度仅增加约三成。 */
  background: url("./images/v2.3/ai-flow-arrow.png") center / 100% 100% no-repeat;
  border-radius: 0;
  clip-path: none;
  filter: drop-shadow(0 13px 18px rgba(59, 126, 224, 0.17));
  z-index: 1;
  align-self: center;
  transform: translateY(var(--flow-offset-y)) rotate(var(--flow-angle));
  transition: filter 0.24s ease, opacity 0.24s ease;
}

/* 输入卡位于箭头上层：箭头尾部延入卡片底层，但视觉从右边框连续发出。 */
.prompt-box {
  position: relative;
  z-index: 2;
}

.flow-arrow::before,
.flow-arrow::after {
  display: none;
}

.flow-arrow.is-loading {
  animation: aiFlowArrowLoading 0.38s ease-in-out infinite;
}

@keyframes aiFlowArrowLoading {
  0%,
  100% {
    filter: drop-shadow(0 10px 14px rgba(59, 126, 224, 0.12));
    opacity: 0.66;
    transform: translateY(var(--flow-offset-y)) rotate(var(--flow-angle)) scale(0.96);
  }
  50% {
    filter: drop-shadow(0 18px 27px rgba(43, 119, 234, 0.34));
    opacity: 1;
    transform: translateY(var(--flow-offset-y)) rotate(var(--flow-angle)) scale(1.05);
  }
}

.answer-box.is-loading {
  opacity: 0.54;
  filter: saturate(0.72);
  transition: opacity 0.12s ease, filter 0.12s ease;
}

.case-panel .bullet-list li.is-typing {
  min-height: 1.55em;
}

.answer-model-icon.model-deepseek,
.answer-model-icon.model-yuanbao {
  padding: 0 !important;
  transform: scale(1.2);
}

@media (max-width: 1100px) {
  .ai-question {
    --ai-flow-gap: 18px;
    --ai-flow-overlap: 10px;
  }

  .flow-arrow {
    width: calc(96px + var(--ai-flow-gap) + var(--ai-flow-overlap));
    height: 96px;
  }
}

@media (max-width: 600px) {
  .ai-question {
    --ai-flow-gap: 0px;
    --ai-flow-overlap: 0px;
  }

  .flow-arrow {
    --flow-angle: 90deg;
    width: 84px;
    height: 84px;
    margin: 0 auto;
  }
}

/* v2.3：结果指标统一为固定数据卡，保证不同模型内容整齐 */
.recommendation-metric {
  min-width: 136px;
  min-height: 74px;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 14px;
  text-align: center;
  background: linear-gradient(145deg, #f8fbff, #eef5ff);
  border: 1px solid #c9ddfb;
  border-radius: 14px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.95), 0 7px 16px rgba(33, 103, 219, 0.07);
}

.recommendation-metric span {
  color: #577298;
  font-size: 13px;
  font-weight: 680;
}

.recommendation-metric strong {
  color: #1268f4;
  font-size: 32px;
  font-weight: 830;
  letter-spacing: -0.055em;
}

@media (max-width: 600px) {
  .recommendation-metric {
    min-width: 124px;
    min-height: 66px;
    align-items: center;
    padding: 8px 10px;
  }

  .recommendation-metric strong {
    font-size: 27px;
  }
}

/* v3.1.3 校准：素材自带留白较多，扩大 Logo 本体而不缩小外框。 */
.case-brand-logo {
  flex-basis: 148px;
  width: 148px;
  height: 70px;
}

.case-brand-logo img {
  transform: translateY(-2px) scale(1.24) !important;
}

@media (max-width: 1100px) {
  .case-brand-logo {
    flex-basis: 126px;
    width: 126px;
    height: 60px;
  }
}

@media (max-width: 600px) {
  .case-brand-logo {
    max-width: 108px;
    height: 50px;
  }

  .case-brand-logo img {
    transform: translateY(-1px) scale(1.16) !important;
  }
}

/* v2.3：首屏仅保留背景图片，移除两侧所有 CSS 光晕、圆环与闪烁。 */
.hero {
  background:
    linear-gradient(180deg, rgba(248, 251, 255, 0.28), rgba(245, 249, 255, 0.1)),
    url("./images/v2.2/hero-background-v2.2.webp") center / cover no-repeat,
    #f4f7fc;
}

.hero::before,
.hero::after {
  display: none;
  animation: none;
}

/* v2.3：案例 Logo 使用固定安全槽位，保证内容区与右侧主图互不侵占。 */
.case-proof {
  width: 100%;
  min-width: 0;
  overflow: hidden;
}

.case-brand-logos {
  display: flex;
  flex: 1 1 auto;
  flex-wrap: nowrap;
  min-width: 0;
  max-width: 100%;
  gap: 14px;
  overflow: hidden;
}

.case-brand-logo {
  display: grid;
  flex: 0 0 108px;
  width: 108px;
  height: 40px;
  place-items: center;
}

.case-brand-logo img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: 100%;
  max-height: 40px;
  object-fit: contain;
  filter: contrast(1.04) saturate(1.04);
}

/* 案例主图内的 AI 推荐气泡在桌面端保持单行，避免出现孤立的单字换行。 */
@media (min-width: 821px) {
  .proof-bubble {
    min-height: 44px;
    gap: 8px;
    padding: 9px 12px;
    overflow: hidden;
    font-size: 12px;
    line-height: 1;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .proof-bubble span {
    flex-basis: 25px;
    width: 25px;
    height: 25px;
    font-size: 11px;
  }
}

/* 对中文正文使用排版引擎的孤字规避；窄屏保留自然换行以避免横向溢出。 */
.section-heading > p,
.case-copy > p,
.feature-copy > p,
.solution-content p,
.reason-copy p,
.hero-prompt-copy small {
  text-wrap: pretty;
}

.section-heading h2,
.case-copy h3,
.feature-copy h3,
.solution-content h3 {
  text-wrap: balance;
}

/* v2.4：模型徽标统一使用中性浅蓝容器，避免元宝绿色图形形成突兀的外框。 */
.answer-model-icon {
  box-sizing: border-box;
  padding: 6px !important;
  background: #fff !important;
  border: 1px solid #d8e4f4;
  border-radius: 15px;
  box-shadow: 0 5px 14px rgba(37, 87, 157, 0.1);
}

.answer-model-icon.model-doubao {
  padding: 0 !important;
}

.answer-model-icon.model-qwen {
  padding: 7px !important;
}

.answer-model-icon.model-deepseek,
.answer-model-icon.model-yuanbao {
  padding: 5px !important;
  transform: none;
}

@media (max-width: 1100px) {
  .case-brand-logo {
    flex-basis: 102px;
    width: 102px;
    height: 38px;
  }

  .case-brand-logo img {
    max-height: 38px;
  }
}

@media (max-width: 600px) {
  .case-brand-logos {
    gap: 10px;
  }

  .case-brand-logo {
    flex-basis: 88px;
    width: 88px;
    height: 34px;
  }

  .case-brand-logo img {
    max-height: 34px;
  }
}

/* v2.6：案例文字标与 AI 模型标识的视觉补齐。 */
.case-brand-logo--wide,
.case-brand-logo--brand-pair {
  flex-basis: 128px;
  width: 128px;
}

.case-brand-logo--wide {
  flex-basis: 160px;
  width: 160px;
  height: 46px;
  overflow: hidden;
}

.case-brand-logo--wide img {
  transform: none;
}

.case-brand-logos--education {
  gap: 8px;
  justify-content: flex-start;
}

.case-brand-logo--education {
  flex: 0 1 calc((100% - 16px) / 3);
  width: auto;
  min-width: 0;
  max-width: 118px;
  overflow: visible;
}

.case-brand-logo--education img {
  transform: none;
  object-fit: contain;
}

.case-brand-logo--brand-pair {
  grid-template-columns: 34px minmax(0, 1fr);
  column-gap: 8px;
  justify-content: stretch;
}

.case-brand-logo--brand-pair .case-brand-symbol {
  width: 34px;
  height: 34px;
  max-height: 34px;
  object-fit: contain;
}

.case-brand-logo--brand-pair .case-brand-wordmark {
  width: 100%;
  height: auto;
  max-height: 27px;
  object-fit: contain;
}

.case-brand-logo--alibaba {
  flex-basis: 122px;
  width: 122px;
}

.case-brand-logo--alibaba img {
  transform: scale(1.1);
}

/* 两枚来源文件留白较多，以居中裁切扩大图形本体，不改变徽标外框。 */
.answer-model-icon.model-deepseek,
.answer-model-icon.model-yuanbao {
  padding: 0 !important;
  object-fit: cover;
  object-position: center;
}

/* 解决方案与 AI 问答共用低对比度的品牌氛围层，卡片和文案保持主视觉。 */
#solutions,
#cases {
  isolation: isolate;
  overflow: hidden;
  background:
    radial-gradient(ellipse 42% 28% at 6% 16%, rgba(96, 160, 255, 0.16), transparent 72%),
    radial-gradient(ellipse 34% 24% at 95% 58%, rgba(71, 141, 255, 0.12), transparent 73%),
    linear-gradient(180deg, #f5f8fd 0%, #edf4ff 44%, #f7faff 100%);
}

#solutions::before,
#solutions::after,
#cases::before,
#cases::after {
  content: "";
  position: absolute;
  z-index: -1;
  pointer-events: none;
}

#solutions::before,
#cases::before {
  inset: 6% -18% 8%;
  background-image:
    linear-gradient(rgba(107, 159, 231, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(107, 159, 231, 0.045) 1px, transparent 1px);
  background-size: 46px 46px;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 17%, #000 83%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 17%, #000 83%, transparent);
}

#solutions::after,
#cases::after {
  display: none;
}

#solutions > .container,
#cases > .container {
  position: relative;
  z-index: 1;
}

#solutions .ai-decision-heading,
#solutions .ai-question {
  position: relative;
  isolation: isolate;
}

#solutions .ai-decision-heading::before {
  display: none;
}

#solutions .ai-question::before {
  display: none;
}

@media (max-width: 1100px) {
  .case-brand-logo--wide,
  .case-brand-logo--brand-pair {
    flex-basis: 116px;
    width: 116px;
  }

  .case-brand-logo--wide {
    flex-basis: 146px;
    width: 146px;
    height: 42px;
  }

  .case-brand-logo--education {
    max-width: 108px;
  }

  .case-brand-logo--brand-pair {
    grid-template-columns: 31px minmax(0, 1fr);
    column-gap: 7px;
  }

  .case-brand-logo--brand-pair .case-brand-symbol {
    width: 31px;
    height: 31px;
    max-height: 31px;
  }

  .case-brand-logo--alibaba {
    flex-basis: 112px;
    width: 112px;
  }
}

@media (max-width: 600px) {
  #solutions::before,
  #cases::before {
    opacity: 0.55;
    background-size: 34px 34px;
  }

  #solutions::after,
  #cases::after {
    display: none;
  }

  #solutions .ai-decision-heading::before {
    top: -48px;
    width: min(620px, 98vw);
    height: 208px;
    border-radius: 26px;
    background-size: auto, 32px 32px, 32px 32px;
  }

  #solutions .ai-question::before {
    inset: -28px -14px -32px;
    border-radius: 28px;
  }

  .case-brand-logo--wide,
  .case-brand-logo--brand-pair {
    flex-basis: 102px;
    width: 102px;
  }

  .case-brand-logo--wide {
    flex-basis: 124px;
    width: 124px;
    height: 38px;
  }

  .case-brand-logo--education {
    max-width: 96px;
  }

  .case-brand-logo--brand-pair {
    grid-template-columns: 28px minmax(0, 1fr);
    column-gap: 6px;
  }

  .case-brand-logo--brand-pair .case-brand-symbol {
    width: 28px;
    height: 28px;
    max-height: 28px;
  }

  .case-brand-logo--brand-pair .case-brand-wordmark {
    max-height: 23px;
  }

  .case-brand-logo--alibaba {
    flex-basis: 98px;
    width: 98px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* v2.9：仅手机端布局校正。桌面与平板规则保持不变。 */
@media (max-width: 600px) {
  /* 首屏：让提示栏成为首屏底边，并将图标与文字作为整体居中。 */
  .hero {
    min-height: 0;
    padding-bottom: 0;
  }

  .hero-prompt-band {
    margin-top: 28px;
  }

  .hero-prompts li,
  .hero-prompts li:nth-child(2),
  .hero-prompts li:nth-child(3) {
    justify-content: center;
  }

  /* WHY GEO：给两位序号和分隔线各自留出安全空间，数据说明按两行均衡换行。 */
  .reason-card {
    grid-template-columns: 76px minmax(0, 1fr);
    gap: 12px;
  }

  .reason-index {
    box-sizing: border-box;
    width: 76px;
    min-width: 76px;
    padding-right: 14px;
    font-size: 52px;
  }

  .reason-index::after {
    right: 0;
  }

  .reason-stat {
    padding-inline: 3px;
  }

  .reason-stat small {
    max-inline-size: 9em;
    font-size: 10px;
    line-height: 1.35;
    text-wrap: balance;
  }

  /* 解决方案：图标尺寸与网格列宽同步，避免与标签文字重叠。 */
  .solution-tab {
    grid-template-columns: 64px minmax(0, 1fr);
    gap: 16px;
    min-height: 96px;
    padding: 16px 20px;
  }

  .solution-tab-icon {
    width: 64px;
    height: 64px;
  }

  /* AI 问答：标题居中；推荐指标独占底行并靠右对齐。 */
  #solutions .ai-decision-heading,
  #solutions .ai-decision-heading .section-kicker,
  #solutions .ai-decision-heading h2,
  #solutions .ai-decision-heading > p {
    width: 100%;
    margin-inline: auto;
    text-align: center;
  }

  .recommendation-metric {
    grid-column: 1 / -1;
    justify-self: end;
    align-items: flex-end;
    margin-top: 2px;
  }

  /* 功能与案例标签改为单列，消除横向滚动和裁切。 */
  #features .section-heading > p:last-child {
    max-width: 315px;
    line-height: 1.75;
    text-wrap: balance;
  }

  #features .tab-list,
  #cases .tab-list {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    width: 100%;
    max-width: none;
    gap: 4px;
    overflow: visible;
    margin-bottom: 30px;
  }

  #features .tab-button,
  #cases .tab-button {
    width: 100%;
    min-width: 0;
    min-height: 48px;
    padding: 9px 14px;
    font-size: 16px;
    white-space: normal;
  }

  /* 页脚三组导航同列，品牌介绍仍独占上行。 */
  .footer-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    column-gap: 12px;
    row-gap: 30px;
  }

  .footer-column h3 {
    margin-bottom: 12px;
    font-size: 14px;
  }

  .footer-column a {
    margin: 7px 0;
    font-size: 12px;
    line-height: 1.45;
  }
}

/* v3.0：仅手机端的 AI 标题与紧凑标签矩阵。 */
@media (max-width: 600px) {
  #solutions .ai-decision-heading {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  #solutions .ai-decision-heading h2 {
    align-self: stretch;
    text-align: center;
  }

  .recommendation-metric {
    justify-self: center;
  }

  #features .tab-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 6px;
  }

  #cases .tab-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 6px;
  }

  #cases .tab-button {
    padding-inline: 6px;
    font-size: 14px;
  }
}

/* v3.0 补充：手机端标题、指标与页脚列对齐。 */
@media (max-width: 600px) {
  .ai-title-mobile-comma {
    display: none;
  }

  .recommendation-metric {
    grid-column: 1 / -1;
    justify-self: end;
    align-items: center;
    min-width: 104px;
    min-height: 54px;
    gap: 2px;
    padding: 7px 10px;
    text-align: center;
    background: #f1f7ff;
    border: 1px solid #cddffd;
    border-radius: 11px;
  }

  .recommendation-metric span,
  .recommendation-metric strong {
    width: 100%;
    text-align: center;
  }

  .recommendation-metric span {
    font-size: 11px;
  }

  .recommendation-metric strong {
    font-size: 24px;
  }

  .footer-grid > .footer-column:nth-of-type(2) {
    text-align: center;
  }

  .footer-grid > .footer-column:nth-of-type(3) {
    text-align: right;
  }
}

/* v3.1：功能与案例共用低饱和胶囊标签栏，弱化选中态的视觉侵占。 */
#features .tab-list,
#cases .tab-list {
  gap: 6px;
  padding: 7px;
  background: linear-gradient(90deg, #eef8ff 0%, #f8fcff 51%, #eef8ff 100%);
  border: 1px solid rgba(194, 217, 239, 0.86);
  border-radius: 999px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.92), 0 8px 20px rgba(41, 85, 132, 0.05);
}

#features .tab-button,
#cases .tab-button {
  color: #425b78;
  border-radius: 999px;
  font-weight: 720;
  text-shadow: none;
  transition: color 180ms ease, background-color 180ms ease, box-shadow 180ms ease;
}

#features .tab-button[aria-selected="true"],
#cases .tab-button[aria-selected="true"] {
  color: #fff;
  background: linear-gradient(135deg, #6aa7e8 0%, #5794d6 100%);
  box-shadow: 0 5px 13px rgba(68, 130, 203, 0.16);
  text-shadow: none;
}

@media (max-width: 600px) {
  #features .tab-list,
  #cases .tab-list {
    gap: 6px;
    padding: 6px;
    border-radius: 22px;
  }

  #features .tab-button,
  #cases .tab-button {
    border-radius: 14px;
    font-weight: 700;
  }
}

/* v3.1 补充：解决方案正文中的能力概览改为低饱和标签，不再突出数字或分割线。 */
.solution-panel-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
  padding-top: 0;
  border-top: 0;
}

.solution-panel-metrics span {
  display: block;
  flex: 0 1 auto;
  min-width: 0;
  padding: 9px 16px;
  background: linear-gradient(90deg, #eef8ff 0%, #f8fcff 100%);
  border: 1px solid rgba(194, 217, 239, 0.86);
  border-radius: 999px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.9), 0 4px 12px rgba(41, 85, 132, 0.04);
}

.solution-panel-metrics span + span {
  border-left: 1px solid rgba(194, 217, 239, 0.86);
}

.solution-panel-metrics span::before,
.solution-panel-metrics b {
  display: none;
}

.solution-panel-metrics small {
  display: block;
  overflow: visible;
  color: #496682;
  font-size: 14px;
  font-weight: 680;
  line-height: 1.35;
  text-overflow: clip;
  white-space: nowrap;
}

@media (max-width: 600px) {
  .solution-panel-metrics {
    gap: 8px;
    margin-top: 20px;
    padding-top: 0;
  }

  .solution-panel-metrics span {
    padding: 8px 12px;
  }

  .solution-panel-metrics small {
    font-size: 12px;
  }
}

/* v3.1 补充：底部锚点按内容收口，避免按钮式外框出现大量留白。 */
.contact-list {
  justify-items: start;
}

.contact-list a {
  width: min(100%, 360px);
  max-width: 100%;
}

/* v3.1 补充：首屏沿用解决方案区的中性浅灰蓝背景，并将提示栏自然融入其中。 */
.hero {
  background: var(--surface-alt);
}

.hero::before,
.hero::after {
  display: none;
}

.hero-prompts {
  background: transparent;
  border: 0;
  border-radius: 0;
  box-shadow: none;
}

.hero-prompts li,
.hero-prompts li:nth-child(2),
.hero-prompts li:nth-child(3) {
  background: transparent;
}

.hero-prompt-marker {
  position: relative;
  display: block;
  flex: 0 0 auto;
  width: 5px;
  height: 38px;
  border-radius: 999px;
  background: #87b5dc;
  border: 1px solid #74a7d4;
  box-shadow: none;
  opacity: 0.86;
}

.hero-prompt-marker::after {
  content: none;
}

@media (max-width: 820px) {
  .hero-prompt-marker {
    width: 5px;
    height: 32px;
  }
}

/* v3.1.2：强化首屏标题的双行层级，保持克制的品牌蓝。 */
@media (min-width: 601px) {
  .hero h1 {
    max-width: 1240px;
    color: #10254a;
    font-family: "HarmonyOS Sans SC", "MiSans", "PingFang SC", "Microsoft YaHei", sans-serif;
    font-size: clamp(62px, 4.7vw, 92px);
    font-weight: 900;
    line-height: 1.02;
    letter-spacing: -0.065em;
    text-shadow: 0 2px 0 rgba(255, 255, 255, 0.74), 0 14px 26px rgba(38, 83, 144, 0.08);
  }

  .hero h1 .hero-title-line:first-child {
    font-size: 1.05em;
  }

  .hero h1 .hero-title-line:last-child {
    color: #14294d;
    font-size: 0.95em;
    letter-spacing: -0.055em;
  }

  .hero h1 strong {
    color: #0b68e4;
    background: linear-gradient(135deg, #1d7df2 8%, #075fd9 94%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: none;
  }
}

/* v3.1.5：首屏行动区与三项提示降为次级视觉层级。 */
.hero .hero-cta {
  background: #4b7ee2;
  box-shadow: 0 8px 18px rgba(43, 91, 181, 0.12);
}

.hero .hero-cta:hover,
.hero .hero-cta:focus-visible {
  background: #3f70d3;
  box-shadow: 0 10px 20px rgba(43, 91, 181, 0.16);
  transform: translateY(-1px);
}

.hero .hero-caption {
  color: #7c899b;
}

.hero-prompts::before {
  opacity: 0.24;
}

.hero-prompts li + li::before {
  background: rgba(148, 182, 218, 0.34);
}

.hero-prompt-marker {
  background: rgba(117, 169, 211, 0.58);
  border-color: rgba(100, 153, 198, 0.48);
  opacity: 0.78;
}

.hero-prompt-copy strong {
  color: rgba(27, 84, 143, 0.82);
  font-weight: 750;
}

.hero-prompt-copy small {
  color: rgba(91, 116, 148, 0.84);
}

/* v3.1.5：功能后台截图使用原始直角画面。 */
#features .feature-screenshot,
#features .feature-screenshot img {
  border-radius: 0;
}

/* v3.1.5：桌面端为核心功能后台图预留约 1.08 倍的展示宽度。 */
@media (min-width: 1101px) {
  #features .feature-panel {
    grid-template-columns: 0.84fr 1.16fr;
    gap: 36px;
  }
}

#features .bullet-list .nowrap {
  white-space: nowrap;
}

/* v3.1.3 补充：解决方案四项切换按钮全部采用纯色背景。 */
.solution-tab {
  background: #fff;
}

.solution-tab:hover {
  background: #f8faff;
}

.solution-tab[aria-selected="true"] {
  background: #f1f6fb;
}

.solution-tab-icon {
  background: #e7eef7;
}

.solution-tab[aria-selected="true"] .solution-tab-icon {
  --solution-icon-cut: #6f9dc9;
  background: #6f9dc9;
  border-color: #6f9dc9;
}

.solution-tab,
.solution-tab-icon,
.solution-tab[aria-selected="true"] .solution-tab-icon {
  box-shadow: none;
}

/* v3.1.3 补充：案例企业 Logo 统一采用带边框的安全槽位。 */
.case-brand-logos {
  gap: 12px;
}

.case-brand-logo {
  display: grid;
  flex: 0 1 132px;
  width: 132px;
  height: 62px;
  min-width: 0;
  padding: 4px 6px;
  overflow: hidden;
  place-items: center;
  background: #fff;
  border: 1px solid #d9e3ee;
  border-radius: 10px;
  box-shadow: none;
}

.case-brand-logo img {
  width: 100%;
  max-width: none;
  height: 100%;
  max-height: none;
  object-fit: cover;
  transform: none !important;
  filter: none;
}

/* v3.1.3 补充：统一校准 Logo 在白色安全槽位中的视觉中心。 */
.case-brand-logo img {
  transform: translateY(-2px) !important;
}

@media (max-width: 1100px) {
  .case-brand-logo {
    flex-basis: 112px;
    width: 112px;
    height: 54px;
  }
}

@media (max-width: 600px) {
  .case-brand-logos {
    gap: 8px;
  }

  .case-brand-logo {
    flex: 1 1 calc((100% - 16px) / 3);
    width: auto;
    max-width: 108px;
    height: 48px;
    padding: 3px 4px;
    border-radius: 9px;
  }

  .case-brand-logo img {
    transform: translateY(-1px) !important;
  }
}

/* v3.1.3 补充：推荐指标数字置顶，并收紧外框。 */
.recommendation-metric {
  min-width: 118px;
  min-height: 60px;
  gap: 2px;
  padding: 7px 10px;
  border-radius: 12px;
}

.recommendation-metric strong {
  font-size: 30px;
  line-height: 1;
}

.recommendation-metric span {
  font-size: 12px;
  line-height: 1.15;
}

@media (max-width: 600px) {
  .recommendation-metric {
    min-width: 98px;
    min-height: 50px;
    padding: 5px 8px;
  }

  .recommendation-metric strong {
    font-size: 24px;
  }

  .recommendation-metric span {
    font-size: 10px;
  }
}

@media (max-width: 600px) {
  .hero h1 {
    font-weight: 900;
    line-height: 1.08;
    text-shadow: 0 1px 0 rgba(255, 255, 255, 0.72);
  }
}

/* v3.1.2：正文能力概览改为参考图的勾选清单。 */
.solution-panel-metrics {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  margin-top: 24px;
}

.solution-panel-metrics span {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0;
  background: transparent;
  border: 0;
  border-radius: 0;
  box-shadow: none;
}

.solution-panel-metrics span + span {
  border-left: 0;
}

.solution-panel-metrics span::before {
  content: "✓";
  display: grid;
  flex: 0 0 auto;
  place-items: center;
  width: 20px;
  height: 20px;
  margin: 0;
  color: #318af0;
  background: radial-gradient(circle, rgba(226, 242, 255, 0.98) 0 53%, rgba(226, 242, 255, 0) 58%);
  border-radius: 50%;
  font-size: 14px;
  font-weight: 900;
  line-height: 1;
}

.solution-panel-metrics small {
  color: #506681;
  font-size: 15px;
  font-weight: 720;
  line-height: 1.4;
  white-space: normal;
}

@media (max-width: 600px) {
  .solution-panel-metrics {
    gap: 9px;
    margin-top: 20px;
  }

  .solution-panel-metrics span {
    gap: 9px;
  }

  .solution-panel-metrics span::before {
    width: 18px;
    height: 18px;
    font-size: 13px;
  }

  .solution-panel-metrics small {
    font-size: 14px;
  }
}

/* v3.1.2 补充：功能与案例切换栏进一步压低高度和视觉权重。 */
#features .tab-list,
#cases .tab-list {
  gap: 4px;
  padding: 4px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.88), 0 5px 14px rgba(41, 85, 132, 0.035);
}

#features .tab-button,
#cases .tab-button {
  min-height: 48px;
  padding: 7px 14px;
  color: #536a84;
  font-size: 18px;
  font-weight: 500;
}

#features .tab-button[aria-selected="true"],
#cases .tab-button[aria-selected="true"] {
  color: #fff;
  background: linear-gradient(135deg, #76a7d4 0%, #699bc8 100%);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.26);
}

@media (max-width: 600px) {
  #features .tab-list,
  #cases .tab-list {
    gap: 4px;
    padding: 4px;
    border-radius: 20px;
  }

  #features .tab-button,
  #cases .tab-button {
    min-height: 42px;
    padding: 6px 5px;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 500;
  }

  #cases .tab-button {
    font-size: 13px;
  }
}

/* v3.1.3：放松首屏标题的字距与行距，保留清晰的双行节奏。 */
@media (min-width: 601px) {
  .hero h1 {
    max-width: 1280px;
    font-size: clamp(49px, 3.65vw, 72px);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.025em;
  }

  .hero h1 .hero-title-line:first-child {
    font-size: 1.03em;
  }

  .hero h1 .hero-title-line + .hero-title-line {
    margin-top: 0.28em;
  }

  .hero h1 .hero-title-line:last-child {
    font-size: 0.94em;
    letter-spacing: -0.018em;
  }
}

/* v3.1.7: desktop navigation alignment, consultation rail and laptop scale */
@media (min-width: 1101px) {
  .site-header .nav-wrap {
    display: grid;
    grid-template-columns: max-content minmax(0, 1fr) max-content;
    align-items: center;
    justify-content: normal;
    column-gap: 32px;
  }

  .site-header .nav {
    height: 44px;
    margin-left: 0;
    align-items: center;
    justify-self: end;
    gap: clamp(26px, 2.2vw, 42px);
    transform: none;
  }

  .site-header .nav-link {
    display: inline-flex;
    height: 44px;
    align-items: center;
    padding-block: 0;
    line-height: 1;
  }

  .site-header .nav-cta {
    align-self: center;
    justify-self: end;
    min-height: 44px;
    margin-left: 0;
    line-height: 1;
  }
}

.site-header .nav-cta,
.site-header .nav-cta:hover,
.site-header .nav-cta:focus-visible {
  box-shadow: none;
  transform: none;
}

.contact-rail {
  box-shadow: none;
}

.contact-rail a,
.contact-rail b {
  font-weight: 400;
}

.contact-rail b {
  letter-spacing: 0;
}

@media (min-width: 1101px) and (max-width: 1920px) {
  html {
    zoom: 0.8;
  }
}