:root {
  --topbar-height: 72px;
  --bg: #f4f8ff;
  --surface: #ffffff;
  --ink: #10213d;
  --muted: #65758d;
  --line: #d8e7fa;
  --primary: #1677ff;
  --primary-dark: #075ad8;
  --cyan: #22c7d9;
  --shadow: 0 24px 70px rgba(20, 88, 170, 0.15);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-y: auto;
  scrollbar-gutter: stable;
}

section[id],
main[id] {
  scroll-margin-top: 92px;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 52% 4%, rgba(34, 199, 217, 0.24), transparent 30rem),
    radial-gradient(circle at 12% 8%, rgba(22, 119, 255, 0.16), transparent 26rem),
    var(--bg);
  font-family:
    Inter, "PingFang SC", "Microsoft YaHei", system-ui, -apple-system,
    BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

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

button {
  font: inherit;
}

svg {
  display: block;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 42px;
  width: 100%;
  min-height: var(--topbar-height);
  padding-inline: max(20px, calc((100% - 1180px) / 2));
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand-logo {
  width: 40px;
  height: 40px;
  display: block;
  object-fit: contain;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 18px;
  line-height: 1.1;
}

.brand small {
  margin-top: 2px;
  color: var(--muted);
  font-size: 12px;
}

.topbar nav {
  display: flex;
  gap: 28px;
  margin-right: auto;
  color: #40536f;
  font-size: 14px;
  font-weight: 800;
}

.topbar nav a:hover {
  color: var(--primary-dark);
}

.scenario-section {
  width: 100%;
  padding: 76px 0 96px;
  background: linear-gradient(180deg, rgba(247, 251, 255, 0.28), #edf6ff 100%);
}

.section-heading {
  max-width: 820px;
  margin: 0 auto 46px;
  padding: 0 20px;
  text-align: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  margin: 0 0 18px;
  padding: 0 14px;
  border: 1px solid rgba(22, 119, 255, 0.18);
  border-radius: 999px;
  color: var(--primary-dark);
  background: rgba(255, 255, 255, 0.74);
  font-size: 14px;
  font-weight: 900;
}

.section-heading h1,
.section-heading h2 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(34px, 4vw, 54px);
  font-weight: 950;
  line-height: 1.16;
  letter-spacing: 0;
}

.section-heading p:not(.eyebrow) {
  margin: 18px auto 0;
  color: var(--muted);
  font-size: 17px;
  font-weight: 650;
  line-height: 1.75;
}

.scenario-list {
  display: grid;
  gap: 28px;
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.core-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px 32px;
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.core-grid article {
  min-height: 276px;
  padding: 32px;
  border: 1px solid rgba(216, 231, 250, 0.95);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(248, 252, 255, 0.96)),
    #fff;
  box-shadow: 0 18px 48px rgba(17, 70, 136, 0.1);
}

.core-icon {
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  border-radius: 8px;
  color: var(--primary-dark);
  background: linear-gradient(135deg, rgba(22, 119, 255, 0.12), rgba(34, 199, 217, 0.14));
}

.core-icon svg {
  width: 29px;
  height: 29px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.9;
}

.core-grid h3 {
  margin: 26px 0 0;
  color: var(--ink);
  font-size: 25px;
  font-weight: 950;
  line-height: 1.25;
}

.core-grid p {
  margin: 18px 0 0;
  color: #40536f;
  font-size: 16px;
  font-weight: 650;
  line-height: 1.85;
}

.core-grid b {
  display: block;
  margin-top: 18px;
  color: var(--primary-dark);
  font-size: 14px;
  font-weight: 900;
  line-height: 1.6;
}

.detail-section {
  padding-top: 86px;
  background: linear-gradient(180deg, #edf6ff 0%, rgba(247, 251, 255, 0.42) 100%);
}

.scenario-row {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1fr);
  align-items: center;
  gap: 48px;
  min-height: 430px;
  padding: 34px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.78);
  box-shadow: 0 18px 54px rgba(19, 85, 166, 0.1);
}

.scenario-row.reverse .scenario-media {
  order: 2;
}

.scenario-media {
  display: grid;
  place-items: center;
}

.scene-card {
  width: min(520px, 100%);
  overflow: hidden;
  border: 1px solid rgba(12, 45, 84, 0.12);
  border-radius: 8px;
  background: linear-gradient(135deg, #082f58, #064d3b);
  box-shadow: 0 24px 70px rgba(17, 70, 136, 0.16);
}

.scene-top {
  position: relative;
  min-height: 320px;
  padding: 46px 36px 38px;
  overflow: hidden;
  background:
    radial-gradient(circle at 22% 16%, rgba(34, 199, 217, 0.18), transparent 16rem),
    linear-gradient(135deg, #082f58, #064d3b);
}

.risk-card,
.risk-card .scene-top {
  background:
    radial-gradient(circle at 76% 16%, rgba(76, 154, 255, 0.2), transparent 16rem),
    linear-gradient(135deg, #0a2d62, #0f4d8a);
}

.ops-card,
.ops-card .scene-top {
  background:
    radial-gradient(circle at 18% 18%, rgba(56, 189, 248, 0.2), transparent 16rem),
    linear-gradient(135deg, #13345f, #0b6b80);
}

.growth-card,
.growth-card .scene-top {
  background:
    radial-gradient(circle at 22% 16%, rgba(34, 199, 217, 0.18), transparent 16rem),
    linear-gradient(135deg, #082f58, #064d3b);
}

.content-card,
.content-card .scene-top {
  background:
    radial-gradient(circle at 80% 16%, rgba(119, 88, 255, 0.2), transparent 16rem),
    linear-gradient(135deg, #18275c, #0e5a7a);
}

.service-card,
.service-card .scene-top {
  background:
    radial-gradient(circle at 80% 16%, rgba(45, 212, 191, 0.18), transparent 16rem),
    linear-gradient(135deg, #12345f, #075b67);
}

.data-card,
.data-card .scene-top {
  background:
    radial-gradient(circle at 78% 16%, rgba(96, 165, 250, 0.2), transparent 16rem),
    linear-gradient(135deg, #14285f, #0d4f78);
}

.scene-prompt {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 8px;
  width: min(390px, 100%);
  min-height: 50px;
  margin: 0 0 28px auto;
  padding: 0 18px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 8px;
  color: #fff;
  background: rgba(6, 17, 31, 0.38);
  font-size: 15px;
  font-weight: 900;
}

.scene-prompt span {
  width: 10px;
  height: 5px;
  border-radius: 999px;
  background: #19d27f;
}

.risk-card .scene-prompt span {
  background: #60a5fa;
}

.ops-card .scene-prompt span {
  background: #22d3ee;
}

.content-card .scene-prompt span {
  background: #a78bfa;
}

.service-card .scene-prompt span {
  background: #2dd4bf;
}

.data-card .scene-prompt span {
  background: #7dd3fc;
}

.scene-status {
  position: relative;
  z-index: 2;
  width: min(344px, 100%);
  padding: 16px 18px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  color: rgba(255, 255, 255, 0.86);
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(12px);
}

.scene-status p {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 6px 0;
  font-size: 15px;
  font-weight: 750;
  line-height: 1.35;
}

.scene-status i {
  width: 9px;
  height: 9px;
  border-radius: 2px;
  background: #22b7ff;
}

.risk-card .scene-status i {
  background: #60a5fa;
}

.ops-card .scene-status i {
  background: #22d3ee;
}

.content-card .scene-status i {
  background: #a78bfa;
}

.service-card .scene-status i {
  background: #2dd4bf;
}

.data-card .scene-status i {
  background: #7dd3fc;
}

.scene-watermark {
  position: absolute;
  right: 58px;
  bottom: 24px;
  width: 112px;
  height: 112px;
  fill: none;
  stroke: rgba(255, 255, 255, 0.16);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 6;
}

.scenario-copy h2 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 950;
  line-height: 1.2;
}

.scenario-copy p {
  margin: 16px 0 0;
  color: #40536f;
  font-size: 17px;
  font-weight: 650;
  line-height: 1.78;
}

.scenario-copy ul {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.scenario-copy li {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: #36516f;
  background: #fff;
  font-size: 14px;
  font-weight: 850;
}

.scenario-copy li::before {
  content: "✓";
  display: grid;
  place-items: center;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  color: var(--primary-dark);
  background:
    linear-gradient(135deg, rgba(22, 119, 255, 0.16), rgba(34, 199, 217, 0.18));
  box-shadow: inset 0 0 0 1px rgba(22, 119, 255, 0.18);
  font-size: 10px;
  font-weight: 950;
  line-height: 1;
}

.header-actions {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.top-cta,
.primary-button,
.secondary-button,
.wechat-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  font-weight: 900;
}

.top-cta {
  min-height: 42px;
  padding: 0 18px;
  color: #fff;
  background: var(--primary);
  box-shadow: 0 14px 32px rgba(22, 119, 255, 0.2);
}

.wechat-popover,
.wecom-entry {
  position: relative;
  display: inline-flex;
}

.wechat-button {
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid rgba(22, 119, 255, 0.16);
  color: var(--primary-dark);
  background: rgba(255, 255, 255, 0.84);
  box-shadow: 0 14px 34px rgba(20, 88, 170, 0.08);
  cursor: pointer;
}

.wecom-avatar {
  width: 24px;
  height: 24px;
  border-radius: 6px;
  display: block;
  flex-shrink: 0;
  object-fit: contain;
  object-position: center;
}

.wechat-button svg,
.primary-button svg,
.secondary-button svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.qr-panel {
  position: absolute;
  top: calc(100% + 12px);
  right: 0;
  z-index: 120;
  width: 188px;
  padding: 14px;
  border: 1px solid rgba(22, 119, 255, 0.14);
  border-radius: 8px;
  opacity: 0;
  pointer-events: none;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 18px 48px rgba(20, 88, 170, 0.16);
  transform: translateY(10px);
  transition:
    opacity 0.2s ease,
    transform 0.2s ease;
}

.wecom-entry:hover .qr-panel,
.wecom-entry:focus-within .qr-panel,
.wecom-entry.is-open .qr-panel {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.hero-actions .wecom-entry .qr-panel {
  left: 50%;
  right: auto;
  transform: translate(-50%, 10px);
}

.hero-actions .wecom-entry:hover .qr-panel,
.hero-actions .wecom-entry:focus-within .qr-panel,
.hero-actions .wecom-entry.is-open .qr-panel {
  transform: translate(-50%, 0);
}

.qr-code-image {
  width: 120px;
  height: 120px;
  margin: 0 auto 12px;
  display: block;
  border-radius: 6px;
  object-fit: contain;
}

.qr-panel strong {
  display: block;
  font-size: 14px;
  text-align: center;
}

.qr-panel p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
  text-align: center;
}

.download-entry {
  position: relative;
  display: inline-flex;
}

.download-panel {
  position: absolute;
  top: calc(100% + 12px);
  left: 50%;
  z-index: 80;
  width: min(320px, calc(100vw - 24px));
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  border: 1px solid rgba(22, 119, 255, 0.14);
  border-radius: 14px;
  opacity: 0;
  pointer-events: none;
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 22px 70px rgba(20, 88, 170, 0.18);
  backdrop-filter: blur(12px);
  transform: translate(-50%, 10px);
  transition:
    opacity 0.18s ease,
    transform 0.18s ease;
}

.download-entry.is-open .download-panel {
  opacity: 1;
  pointer-events: auto;
  transform: translate(-50%, 0);
}

.download-entry.is-align-right .download-panel {
  left: auto;
  right: 0;
  transform: translateY(10px);
}

.download-entry.is-align-right.is-open .download-panel {
  transform: translateY(0);
}

.topbar .download-entry.is-align-right .download-panel {
  left: 50%;
  right: auto;
  transform: translate(-50%, 10px);
}

.topbar .download-entry.is-align-right.is-open .download-panel {
  transform: translate(-50%, 0);
}

.download-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 14px;
  border-radius: 12px;
  border: 1px solid rgba(22, 119, 255, 0.12);
  color: var(--ink);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.92), rgba(240, 247, 255, 0.9));
  transition:
    transform 0.15s ease,
    border-color 0.15s ease,
    background 0.15s ease;
}

.download-item:hover {
  border-color: rgba(22, 119, 255, 0.2);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.96), rgba(232, 244, 255, 0.92));
  transform: translateY(-1px);
}

.download-item-icon {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  border: 1px solid rgba(22, 119, 255, 0.14);
  color: #0f213a;
  background: rgba(255, 255, 255, 0.9);
}

.download-item-icon svg {
  width: 22px;
  height: 22px;
  fill: currentColor;
}

.download-item-copy {
  display: grid;
  gap: 4px;
  text-align: left;
}

.download-item-copy strong {
  font-size: 15px;
  font-weight: 950;
  line-height: 1.1;
}

.download-item-copy small {
  color: var(--muted);
  font-size: 12px;
  font-weight: 650;
  line-height: 1.2;
}

.download-status {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.4;
  text-align: left;
}

.download-status:empty {
  display: none;
}

.hero {
  display: flex;
  align-items: center;
  justify-content: center;
  width: min(1180px, calc(100% - 40px));
  min-height: max(760px, calc(100vh - var(--topbar-height)));
  min-height: max(760px, calc(100svh - var(--topbar-height)));
  min-height: max(760px, calc(100dvh - var(--topbar-height)));
  margin: 0 auto;
  padding: 72px 0 max(72px, 8vh);
  text-align: center;
}

.hero-copy {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: min(920px, 100%);
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-height: 36px;
  margin: 0 0 24px;
  padding: 0 17px;
  border: 1px solid rgba(22, 119, 255, 0.18);
  border-radius: 999px;
  color: #1767d8;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.76), rgba(232, 244, 255, 0.82));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.75),
    0 12px 28px rgba(22, 119, 255, 0.1);
  backdrop-filter: blur(14px);
  font-size: 14px;
  font-weight: 800;
  line-height: 1;
}

.hero-eyebrow svg {
  width: 17px;
  height: 17px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.hero-mark {
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  margin: 0 0 30px;
  border-radius: 14px;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--cyan));
  box-shadow: 0 18px 44px rgba(22, 119, 255, 0.25);
}

.hero-mark svg {
  width: 35px;
  height: 35px;
}

.hero-mark path:first-child {
  fill: rgba(255, 255, 255, 0.92);
  stroke: none;
}

.hero-mark path:last-child {
  fill: none;
  stroke: var(--primary);
  stroke-linecap: round;
  stroke-width: 1.8;
}

.hero h1 {
  max-width: 980px;
  margin: 0;
  color: var(--ink);
  font-size: clamp(38px, 4vw, 54px);
  font-weight: 950;
  line-height: 1.12;
  letter-spacing: 0;
  white-space: nowrap;
}

.hero-brand-line,
.hero-title-line {
  display: block;
}

.hero-brand-line {
  margin-bottom: 14px;
  font-size: clamp(28px, 3vw, 40px);
  line-height: 1.08;
}

.hero-title-line {
  font-size: clamp(34px, 4vw, 54px);
  line-height: 1.14;
  white-space: normal;
}

.hero-subtitle {
  max-width: 720px;
  margin: 18px 0 0;
  color: #42536b;
  font-size: 18px;
  font-weight: 650;
  line-height: 1.85;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 14px;
  margin-top: 54px;
}

.hero-value-cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
  width: min(980px, 100%);
  margin-top: 66px;
}

.hero-value-cards article {
  min-height: 184px;
  padding: 28px 24px 26px;
  border: 1px solid rgba(22, 119, 255, 0.16);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.9), rgba(239, 247, 255, 0.76)),
    rgba(255, 255, 255, 0.82);
  box-shadow: 0 18px 44px rgba(20, 88, 170, 0.1);
}

.hero-value-icon {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  margin: 0 auto 18px;
  border: 1px solid rgba(22, 119, 255, 0.14);
  border-radius: 8px;
  color: var(--primary-dark);
  background:
    linear-gradient(135deg, rgba(22, 119, 255, 0.12), rgba(34, 199, 217, 0.16)),
    #fff;
  box-shadow: 0 14px 30px rgba(20, 88, 170, 0.1);
}

.hero-value-icon svg {
  width: 27px;
  height: 27px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.hero-value-cards h3 {
  margin: 0;
  color: var(--primary-dark);
  font-size: 18px;
  font-weight: 950;
  line-height: 1.2;
}

.hero-value-cards p {
  margin: 10px 0 0;
  color: #42536b;
  font-size: 14px;
  font-weight: 720;
  line-height: 1.55;
}

.hero-demo-section {
  width: min(1180px, calc(100% - 40px));
  margin: 8px auto 0;
}

.hero-demo-window {
  display: grid;
  grid-template-columns: 270px minmax(0, 1fr);
  min-height: 760px;
  overflow: hidden;
  border: 1px solid rgba(182, 206, 234, 0.7);
  border-radius: 8px;
  background: linear-gradient(180deg, rgba(245, 249, 255, 0.98), rgba(239, 245, 255, 0.94));
  box-shadow: 0 24px 64px rgba(31, 82, 146, 0.12);
}

/* 后续 demo 与布局样式保持与原 `data-growth.css` 一致（已省略）。 */

.hero-demo-sidebar {
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 14px 12px 16px;
  border-right: 1px solid rgba(184, 206, 231, 0.78);
  background: linear-gradient(180deg, rgba(246, 249, 255, 0.98), rgba(236, 242, 252, 0.96));
}

.hero-demo-sidebar-brand {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 4px 2px 12px;
  border-bottom: 1px solid rgba(195, 213, 234, 0.72);
}

.hero-demo-sidebar-logo {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 12px;
  color: #fff;
  background: linear-gradient(135deg, #2b9dff, #5bd1e7);
  box-shadow: 0 12px 26px rgba(43, 157, 255, 0.24);
}

.hero-demo-sidebar-logo svg {
  width: 28px;
  height: 28px;
}

.hero-demo-sidebar-logo path:first-child {
  fill: rgba(255, 255, 255, 0.94);
  stroke: none;
}

.hero-demo-sidebar-logo path:last-child {
  fill: none;
  stroke: #1677ff;
  stroke-linecap: round;
  stroke-width: 1.8;
}

.hero-demo-sidebar-meta strong,
.hero-demo-sidebar-meta span {
  display: block;
}

.hero-demo-sidebar-meta strong {
  color: #1a2940;
  font-size: 14px;
  font-weight: 900;
}

.hero-demo-sidebar-meta span {
  margin-top: 4px;
  color: #71819a;
  font-size: 11px;
  font-weight: 600;
}

.hero-demo-sidebar-nav {
  display: grid;
  gap: 10px;
}

.hero-demo-sidebar-card {
  padding: 14px 14px 13px;
  border: 1px solid rgba(204, 218, 238, 0.9);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.76);
  box-shadow: 0 8px 18px rgba(42, 90, 154, 0.05);
}

.hero-demo-sidebar-card.is-active {
  border-color: rgba(107, 176, 255, 0.72);
  background: linear-gradient(180deg, rgba(235, 244, 255, 0.96), rgba(228, 240, 255, 0.92));
  box-shadow: inset 0 0 0 1px rgba(107, 176, 255, 0.26);
}

.hero-demo-sidebar-card b,
.hero-demo-sidebar-card span {
  display: block;
}

.hero-demo-sidebar-card b {
  color: #20314b;
  font-size: 13px;
  font-weight: 850;
}

.hero-demo-sidebar-card span {
  margin-top: 5px;
  color: #7a899f;
  font-size: 11px;
  font-weight: 600;
  line-height: 1.5;
}

.hero-demo-main {
  display: flex;
  flex-direction: column;
  min-width: 0;
  background: linear-gradient(180deg, rgba(248, 251, 255, 0.98), rgba(240, 247, 255, 0.96));
}

.hero-demo-top {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 0 22px;
  border-bottom: 1px solid rgba(188, 208, 233, 0.6);
  background: linear-gradient(180deg, rgba(251, 253, 255, 0.98), rgba(246, 250, 255, 0.96));
}

.hero-demo-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 52px;
  height: 28px;
  padding: 0 12px;
  border: 1px solid rgba(202, 214, 233, 0.88);
  border-radius: 999px;
  color: #8a96a8;
  background: rgba(255, 255, 255, 0.92);
  font-size: 12px;
  font-weight: 700;
}

.hero-demo-dot {
  display: none;
}

.hero-demo-body {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 18px 16px 18px;
}

.hero-demo-prompt {
  align-self: flex-end;
  max-width: min(480px, 76%);
  padding: 16px 18px 12px;
  border: 1px solid rgba(199, 212, 235, 0.94);
  border-radius: 14px;
  color: #132746;
  background: linear-gradient(180deg, rgba(239, 244, 255, 0.98), rgba(230, 239, 255, 0.94));
  box-shadow: 0 8px 20px rgba(73, 103, 146, 0.08);
  text-align: left;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.7;
}

.hero-demo-answer {
  align-self: stretch;
  padding: 14px 16px 18px;
  border: 1px solid rgba(180, 221, 222, 0.96);
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(223, 244, 245, 0.98), rgba(217, 241, 242, 0.96));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.62);
}

.hero-demo-block + .hero-demo-block,
.hero-demo-result {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid rgba(113, 157, 173, 0.24);
}

.hero-demo-text,
.hero-demo-result {
  margin: 0;
  color: #17334b;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.8;
}

.hero-demo-steps {
  display: grid;
  gap: 10px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.hero-demo-steps li {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #4d667e;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.65;
}

.hero-demo-steps li::before {
  content: "";
  width: 14px;
  height: 14px;
  flex: 0 0 auto;
  border: 1.5px solid rgba(118, 156, 173, 0.42);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.42);
}

.hero-demo-steps span {
  flex: 1;
}

.hero-demo-file {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 18px;
  padding: 16px 18px;
  border: 1px solid rgba(165, 203, 207, 0.92);
  border-radius: 14px;
  background: rgba(245, 253, 253, 0.96);
}

.hero-demo-file-icon {
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  border-radius: 8px;
  color: #1f84d8;
  background: rgba(230, 241, 255, 0.92);
}

.hero-demo-file-icon svg {
  width: 28px;
  height: 28px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.hero-demo-file-meta {
  flex: 1;
  min-width: 0;
}

.hero-demo-file-meta strong {
  display: block;
  color: #1d2941;
  font-size: 15px;
  font-weight: 800;
  line-height: 1.5;
}

.hero-demo-file-meta span {
  display: block;
  margin-top: 4px;
  color: #7c899b;
  font-size: 14px;
  font-weight: 600;
}

.hero-demo-file-action {
  min-width: 36px;
  height: 36px;
  padding: 0;
  border: 0;
  border-radius: 8px;
  color: #8a96a8;
  background: transparent;
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
}

.hero-demo-input {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-top: auto;
  padding: 16px 16px 16px 18px;
  border: 1px solid rgba(202, 214, 233, 0.92);
  border-radius: 18px;
  color: #a0abb9;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(248, 251, 255, 0.98));
  box-shadow: 0 10px 28px rgba(58, 99, 150, 0.08);
  font-size: 15px;
  font-weight: 600;
}

.hero-demo-input button {
  display: grid;
  place-items: center;
  width: 46px;
  height: 42px;
  border: 0;
  border-radius: 12px;
  color: #fff;
  background: linear-gradient(135deg, rgba(22, 119, 255, 0.92), rgba(22, 119, 255, 0.78));
}

.hero-demo-input svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.primary-button,
.secondary-button {
  gap: 8px;
  min-height: 52px;
  padding: 0 24px;
  border: 1px solid rgba(22, 119, 255, 0.2);
  font-size: 16px;
  cursor: pointer;
}

.primary-button {
  color: #fff;
  background: var(--primary);
  box-shadow: 0 16px 36px rgba(22, 119, 255, 0.24);
}

.secondary-button {
  color: var(--primary-dark);
  background: #fff;
}

.matrix-section {
  width: 100%;
  max-width: none;
  padding: 96px max(20px, calc((100% - 1180px) / 2));
  color: #fff;
  background:
    radial-gradient(circle at 78% 12%, rgba(34, 199, 217, 0.26), transparent 28rem),
    radial-gradient(circle at 18% 8%, rgba(22, 119, 255, 0.3), transparent 30rem),
    linear-gradient(180deg, #123b78, #0d2c59);
}

.on-dark h2 {
  color: #fff;
}

.on-dark p:not(.eyebrow) {
  color: rgba(255, 255, 255, 0.72);
}

.matrix-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.matrix-grid article {
  min-height: 246px;
  padding: 22px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  color: var(--ink);
  background: #f4f7fb;
}

.mini-icon {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  margin-bottom: 26px;
  border-radius: 8px;
  color: var(--primary-dark);
  background: #eaf4ff;
}

.mini-icon svg {
  width: 24px;
  height: 24px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.9;
}

.matrix-grid h3 {
  margin: 0;
  color: var(--ink);
  font-size: 24px;
  font-weight: 950;
  line-height: 1.2;
}

.matrix-grid p {
  margin: 10px 0 18px;
  color: #5c6d83;
  font-size: 14px;
  font-weight: 650;
  line-height: 1.7;
}

.matrix-grid b {
  color: var(--primary-dark);
  font-size: 13px;
  line-height: 1.55;
}

.steps-section {
  width: 100%;
  max-width: none;
  color: var(--ink);
  padding: 76px max(20px, calc((100% - 1180px) / 2)) 72px;
  background:
    radial-gradient(circle at 18% 8%, rgba(22, 119, 255, 0.14), transparent 24rem),
    radial-gradient(circle at 82% 6%, rgba(34, 199, 217, 0.12), transparent 26rem),
    linear-gradient(180deg, #f5f9ff 0%, #edf6ff 58%, var(--bg) 100%),
    radial-gradient(circle at 50% 0%, rgba(22, 119, 255, 0.06), transparent 56%),
    radial-gradient(circle at 20% 18%, rgba(34, 199, 217, 0.06), transparent 52%),
    transparent;
}

.steps-section .on-dark h2 {
  color: var(--ink);
}

.steps-section .on-dark p {
  color: var(--muted);
}

.steps-section .section-heading {
  width: min(1000px, calc(100% - 40px));
  margin-inline: auto;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 38px;
  width: min(1180px, calc(100% - 40px));
  margin: 40px auto 0;
}

.steps article {
  position: relative;
  text-align: center;
}

.steps article:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 40px;
  right: -29px;
  width: 58px;
  height: 1px;
  background:
    linear-gradient(
      90deg,
      transparent 0%,
      rgba(22, 119, 255, 0.16) 18%,
      rgba(34, 199, 217, 0.14) 50%,
      rgba(22, 119, 255, 0.16) 82%,
      transparent 100%
    );
}

.step-icon {
  position: relative;
  z-index: 0;
  display: grid;
  place-items: center;
  width: 80px;
  height: 80px;
  margin: 0 auto 22px;
  overflow: hidden;
  border: 1px solid rgba(22, 119, 255, 0.18);
  border-radius: 50%;
  color: var(--primary-dark);
  background:
    radial-gradient(58% 58% at 32% 28%, rgba(255, 255, 255, 0.88) 0%, rgba(255, 255, 255, 0.55) 38%, rgba(255, 255, 255, 0) 70%),
    radial-gradient(92% 92% at 66% 62%, rgba(34, 199, 217, 0.18) 0%, rgba(34, 199, 217, 0) 62%),
    radial-gradient(120% 120% at 50% 30%, rgba(22, 119, 255, 0.16) 0%, rgba(22, 119, 255, 0.06) 45%, rgba(22, 119, 255, 0) 78%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(235, 246, 255, 0.92));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.8),
    0 18px 44px rgba(22, 119, 255, 0.09),
    0 10px 20px rgba(20, 88, 170, 0.06);
}

.step-icon::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background:
    radial-gradient(70% 70% at 50% 38%, rgba(255, 255, 255, 0.72), rgba(255, 255, 255, 0) 66%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.22), transparent 50%);
  z-index: 0;
}

.step-icon svg {
  position: relative;
  z-index: 1;
  width: 34px;
  height: 34px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.9;
}

.steps h3 {
  margin: 0;
  color: #0f213a;
  font-size: 24px;
  font-weight: 950;
  line-height: 1.2;
}

.steps p {
  max-width: 280px;
  margin: 14px auto 0;
  color: #4b5f7a;
  font-size: 15px;
  font-weight: 650;
  line-height: 1.75;
}

.steps .nowrap {
  white-space: nowrap;
}

.cta-section {
  width: min(980px, calc(100% - 40px));
  margin: 12px auto 122px;
  padding: 88px 40px;
  border: 1px solid rgba(22, 119, 255, 0.14);
  border-radius: 8px;
  background:
    radial-gradient(circle at 20% 10%, rgba(22, 119, 255, 0.12), transparent 18rem),
    radial-gradient(circle at 80% 16%, rgba(34, 199, 217, 0.14), transparent 20rem),
    rgba(255, 255, 255, 0.82);
  box-shadow: 0 22px 60px rgba(20, 88, 170, 0.12);
  text-align: center;
}

.cta-section h2 {
  max-width: 720px;
  margin: 0 auto;
  color: var(--ink);
  font-size: clamp(30px, 4vw, 48px);
  font-weight: 950;
  line-height: 1.18;
}

.cta-section p:not(.eyebrow) {
  max-width: 680px;
  margin: 18px auto 0;
  color: var(--muted);
  font-size: 17px;
  font-weight: 650;
  line-height: 1.76;
}

.cta-section .hero-actions {
  justify-content: center;
  margin-top: 28px;
}

.footer {
  display: grid;
  grid-template-columns: 1.5fr 0.7fr 0.7fr;
  gap: 56px;
  width: 100%;
  margin-top: 0;
  padding: 64px max(40px, calc((100vw - 1180px) / 2)) 58px;
  color: #fff;
  background: linear-gradient(180deg, #132947 0%, #0f213a 100%);
}

.footer .brand strong {
  color: #fff;
}

.footer .brand small,
.footer p,
.footer a {
  color: rgba(255, 255, 255, 0.7);
}

.footer p {
  max-width: 420px;
  margin: 18px 0 0;
  font-size: 15px;
  font-weight: 650;
  line-height: 1.8;
}

.footer h3 {
  margin: 0 0 14px;
  color: #fff;
  font-size: 16px;
}

.footer a:not(.brand) {
  display: block;
  margin-top: 10px;
  font-size: 14px;
  font-weight: 650;
}

.footer-legal {
  grid-column: 1 / -1;
  margin-top: 24px;
  padding-top: 36px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  text-align: center;
}

.footer-legal .footer-copyright {
  max-width: none;
  margin: 0;
  font-size: 15px;
  font-weight: 650;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.72);
}

.footer-legal .footer-icp {
  max-width: none;
  margin: 8px 0 0;
  font-size: 13px;
  font-weight: 650;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.45);
}

.footer .footer-legal a {
  display: inline;
  margin-top: 0;
  font-size: inherit;
  font-weight: inherit;
  color: inherit;
  text-decoration: none;
}

.footer .footer-legal a:hover,
.footer .footer-legal a:focus-visible {
  color: rgba(255, 255, 255, 0.75);
}

@media (max-width: 980px) {
  .topbar nav {
    display: none;
  }

  .hero {
    min-height: auto;
  }

  .hero-value-cards {
    grid-template-columns: 1fr;
    max-width: 560px;
  }

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

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

  .scenario-row.reverse .scenario-media {
    order: 0;
  }

  .matrix-grid,
  .steps,
  .footer {
    grid-template-columns: 1fr 1fr;
  }

  .steps article:not(:last-child)::after {
    display: none;
  }

  .hero-demo-window {
    grid-template-columns: 220px minmax(0, 1fr);
    min-height: 700px;
  }

  .hero-demo-sidebar {
    padding-inline: 10px;
  }

  .hero-demo-prompt {
    max-width: 78%;
  }
}

@media (max-width: 680px) {
  .topbar {
    padding-inline: 14px;
    gap: 16px;
  }

  .brand small {
    display: none;
  }

  .top-cta {
    padding: 0 14px;
    font-size: 14px;
  }

  .hero,
  .hero-demo-section,
  .scenario-list,
  .steps,
  .cta-section {
    width: calc(100% - 28px);
  }

  .hero {
    min-height: auto;
    padding: 42px 0 32px;
  }

  .hero h1 {
    font-size: 37px;
    white-space: normal;
  }

  .hero-brand-line {
    font-size: 28px;
  }

  .hero-title-line {
    font-size: 37px;
  }

  .hero-subtitle {
    font-size: 16px;
  }

  .hero-value-cards {
    gap: 10px;
    margin-top: 22px;
  }

  .hero-value-cards article {
    min-height: auto;
    padding: 16px;
  }

  .hero-value-icon {
    width: 42px;
    height: 42px;
    margin-bottom: 12px;
  }

  .hero-value-icon svg {
    width: 24px;
    height: 24px;
  }

  .hero-demo-body {
    padding: 20px 16px 18px;
  }

  .hero-demo-window {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .hero-demo-sidebar {
    gap: 14px;
    padding: 14px 12px;
    border-right: 0;
    border-bottom: 1px solid rgba(184, 206, 231, 0.78);
  }

  .hero-demo-sidebar-brand {
    padding-bottom: 10px;
  }

  .hero-demo-sidebar-nav {
    grid-template-columns: 1fr 1fr;
  }

  .hero-demo-sidebar-card {
    padding: 12px;
  }

  .hero-demo-sidebar-card span,
  .hero-demo-sidebar-meta span {
    display: none;
  }

  .hero-demo-prompt {
    align-self: stretch;
    max-width: none;
    padding: 14px 16px;
    font-size: 15px;
  }

  .hero-demo-answer {
    padding: 14px;
  }

  .hero-demo-text,
  .hero-demo-result {
    font-size: 15px;
  }

  .hero-demo-steps li {
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 6px 10px;
    font-size: 14px;
  }

  .hero-demo-file {
    align-items: flex-start;
    gap: 12px;
  }

  .hero-demo-file-action {
    display: none;
  }

  .hero-demo-file-meta strong {
    font-size: 15px;
  }

  .hero-demo-input {
    padding: 14px 14px 14px 16px;
    font-size: 14px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .primary-button,
  .secondary-button {
    width: 100%;
  }

  .scenario-section {
    padding-top: 48px;
  }

  .scenario-list {
    width: calc(100% - 28px);
  }

  .core-grid {
    width: calc(100% - 28px);
    gap: 16px;
  }

  .core-grid article {
    min-height: auto;
    padding: 24px 20px;
  }

  .core-grid h3 {
    margin-top: 20px;
    font-size: 22px;
  }

  .scenario-row {
    gap: 24px;
    padding: 20px;
  }

  .scene-top {
    min-height: 280px;
    padding: 32px 22px;
  }

  .scene-prompt {
    margin-left: 0;
    font-size: 14px;
  }

  .matrix-section,
  .steps-section {
    padding-inline: 20px;
  }

  .matrix-grid,
  .steps,
  .footer {
    grid-template-columns: 1fr;
  }

  .steps h3 {
    font-size: 24px;
  }

  .step-icon {
    width: 80px;
    height: 80px;
    margin-bottom: 18px;
    border-radius: 50%;
  }

  .step-icon svg {
    width: 32px;
    height: 32px;
  }

  .steps-section {
    padding: 56px 20px 44px;
  }

  .steps {
    gap: 32px;
    margin-top: 40px;
  }

  .steps article:not(:last-child)::after {
    top: 40px;
  }

  .cta-section {
    margin: 8px auto 82px;
    padding: 56px 20px;
  }

  .footer {
    padding: 48px 28px;
  }

  .qr-panel {
    right: 50%;
    transform: translate(50%, 10px);
  }

  .wecom-entry:hover .qr-panel,
  .wecom-entry:focus-within .qr-panel,
  .wecom-entry.is-open .qr-panel {
    transform: translate(50%, 0);
  }

  .cta-section .hero-actions .wecom-entry .qr-panel {
    top: calc(100% + 12px);
    left: 50%;
    right: auto;
    transform: translate(-50%, 10px);
  }

  .cta-section .hero-actions .wecom-entry:hover .qr-panel,
  .cta-section .hero-actions .wecom-entry:focus-within .qr-panel,
  .cta-section .hero-actions .wecom-entry.is-open .qr-panel {
    transform: translate(-50%, 0);
  }

  section[id],
  main[id] {
    scroll-margin-top: 82px;
  }
}