:root {
  --brand-blue: #1f74ff;
  --brand-blue-dark: #1557d8;
  --brand-cyan: #35c5d8;
  --brand-page: #eef7ff;
  --brand-soft: #eaf4ff;
  --brand-line: #d8e6f7;
  --brand-ink: #172033;
  --brand-muted: #667085;
  --white: #ffffff;
  --shadow-card: 0 12px 32px rgba(24, 73, 132, 0.10);
  --shadow-hover: 0 22px 48px rgba(24, 73, 132, 0.16);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--brand-page);
  color: var(--brand-ink);
  font-family: Arial, "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", sans-serif;
}

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

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

button,
input,
select,
textarea {
  font: inherit;
}

.page-shell {
  width: min(100% - 48px, 1280px);
  margin: 0 auto;
}

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  border-bottom: 1px solid rgba(255, 255, 255, 0.7);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(18px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(100% - 48px, 1280px);
  height: 64px;
  margin: 0 auto;
}

.brand {
  display: inline-flex;
  align-items: center;
  min-width: 0;
  gap: 12px;
  font-weight: 900;
}

.brand-mark {
  display: grid;
  padding:0 10px;
  height: 36px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 8px;
  background: var(--brand-blue);
  color: var(--white);
}

.brand-name {
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.site-nav {
  display: flex;
  gap: 28px;
  color: var(--brand-muted);
  font-size: 14px;
  font-weight: 700;
}

.site-nav a:hover {
  color: var(--brand-blue);
}

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

.header-cta,
.primary-button {
  background: var(--brand-blue);
  color: var(--white);
  box-shadow: var(--shadow-card);
}

.header-cta {
  padding: 10px 20px;
  font-size: 14px;
}

.header-cta:hover,
.primary-button:hover {
  background: var(--brand-blue-dark);
}

.secondary-button {
  border: 1px solid rgba(31, 116, 255, 0.3);
  background: rgba(255, 255, 255, 0.75);
  color: var(--brand-blue);
}

.hero {
  position: relative;
  overflow: hidden;
  padding-top: 96px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.7);
  background:
    linear-gradient(115deg, rgba(255, 255, 255, 0.94) 0%, rgba(239, 248, 255, 0.94) 52%, rgba(219, 239, 255, 0.96) 100%),
    repeating-linear-gradient(135deg, rgba(31, 116, 255, 0.08) 0 1px, transparent 1px 34px);
}

.hero-ribbon {
  position: absolute;
  width: 56vw;
  min-width: 560px;
  height: 160px;
  border: 22px solid rgba(31, 116, 255, 0.12);
  border-radius: 999px;
  pointer-events: none;
}

.hero-ribbon-left {
  left: -28vw;
  top: 138px;
  transform: rotate(-14deg);
}

.hero-ribbon-right {
  right: -26vw;
  top: 214px;
  transform: rotate(-14deg);
  border-color: rgba(53, 197, 216, 0.18);
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  gap: 40px;
  padding-top: 56px;
  padding-bottom: 80px;
}

.hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.eyebrow-pill {
  width: fit-content;
  margin: 0 0 20px;
  padding: 8px 16px;
  border: 1px solid rgba(31, 116, 255, 0.2);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.7);
  color: var(--brand-blue);
  font-size: 14px;
  font-weight: 900;
  box-shadow: var(--shadow-card);
}

.hero h1 {
  margin: 0;
  color: var(--brand-ink);
  font-size: clamp(40px, 5vw, 72px);
  font-weight: 900;
  line-height: 1.12;
}

.hero h1 span {
  display: block;
}

.hero-description {
  max-width: 680px;
  margin: 24px 0 0;
  color: var(--brand-muted);
  font-size: 18px;
  font-weight: 700;
  line-height: 2;
}

.hero-actions {
  display: flex;
  gap: 12px;
  margin-top: 32px;
}

.hero-actions a {
  padding: 16px 28px;
}

.hero-visual {
  display: flex;
  align-items: flex-end;
}

.hero-image-frame {
  width: 100%;
  padding: 12px;
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.8);
  box-shadow: var(--shadow-hover);
  backdrop-filter: blur(16px);
}

.hero-image-frame img {
  width: 100%;
  aspect-ratio: 16 / 10;
  border-radius: 6px;
  object-fit: cover;
}

.stats-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
  padding-bottom: 48px;
}

.metric-card {
  padding: 16px;
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.9);
  text-align: center;
  box-shadow: var(--shadow-card);
}

.metric-card strong {
  display: block;
  color: var(--brand-blue);
  font-size: 36px;
  font-weight: 900;
}

.metric-card span {
  display: block;
  margin-top: 8px;
  color: var(--brand-muted);
  font-size: 14px;
  font-weight: 700;
}

.section {
  scroll-margin-top: 96px;
  padding: 72px 0;
}

.section-white {
  background: var(--white);
}

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

.section-title {
  /* max-width: 780px; */
  margin: 0 auto 36px;
  text-align: center;
}

.section-title.left {
  margin-left: 0;
  text-align: left;
}

.section-title p {
  margin: 0 0 12px;
  color: var(--brand-blue);
  font-size: 14px;
  font-weight: 900;
  letter-spacing: 0.12em;
}

.section-title h2 {
  margin: 0;
  color: var(--brand-ink);
  font-size: clamp(32px, 3vw, 44px);
  font-weight: 900;
  line-height: 1.24;
}

.section-title span {
  display: block;
  margin-top: 16px;
  color: var(--brand-muted);
  font-size: 16px;
  line-height: 2;
}

.challenge-grid,
.service-grid,
.track-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

.info-card,
.service-card,
.track-grid article {
  border: 1px solid var(--brand-line);
  border-radius: 8px;
  background: #fbfdff;
  box-shadow: var(--shadow-card);
}

.info-card,
.service-card,
.track-grid article {
  padding: 20px;
}

.info-card em {
  color: var(--brand-blue);
  font-style: normal;
  font-size: 14px;
  font-weight: 900;
}

.info-card h3,
.service-card h3,
.track-grid h3 {
  margin: 24px 0 0;
  font-size: 22px;
  font-weight: 900;
}

.track-grid h3 {
  margin-top: 0;
  font-size: 18px;
}

.info-card p,
.service-card p,
.track-grid p {
  color: var(--brand-muted);
  font-size: 14px;
  line-height: 1.9;
}

.service-card {
  background: var(--white);
}

.service-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.service-top strong {
  display: grid;
  width: 40px;
  height: 40px;
  place-items: center;
  border-radius: 8px;
  background: var(--brand-blue);
  color: var(--white);
}

.service-top span {
  padding: 4px 12px;
  border-radius: 8px;
  background: var(--brand-soft);
  color: var(--brand-blue);
  font-size: 12px;
  font-weight: 900;
}

.carousel {
  overflow: hidden;
  border: 1px solid var(--brand-line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: var(--shadow-hover);
}

.carousel-header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 16px 24px;
  border-bottom: 1px solid var(--brand-line);
}

.carousel-header h3 {
  margin: 0;
  font-size: 18px;
  font-weight: 900;
}

.carousel-stage {
  position: relative;
  overflow: hidden;
  background: #f7fbff;
}

.carousel-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.85);
  color: var(--brand-ink);
  font-size: 20px;
  font-weight: 900;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
  transition: background 0.2s ease, transform 0.2s ease;
}

.carousel-arrow:hover {
  background: var(--white);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.18);
}

.carousel-arrow:active {
  transform: translateY(-50%) scale(0.95);
}

.carousel-arrow-left {
  left: 12px;
}

.carousel-arrow-right {
  right: 12px;
}

.slide-track {
  display: flex;
  transition: transform 500ms ease;
}

.slide-track figure {
  width: 100%;
  flex: 0 0 100%;
  margin: 0;
}

.slide-track img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: contain;
}

.slide-dots {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  padding: 16px;
}

.slide-dots button {
  width: 10px;
  height: 10px;
  padding: 0;
  border: 0;
  border-radius: 999px;
  background: var(--brand-line);
  cursor: pointer;
  transition: width 200ms ease, background 200ms ease;
}

.slide-dots button.active {
  width: 32px;
  background: var(--brand-blue);
}

.track-grid {
  margin-top: 32px;
}

.proof-grid,
.lead-grid {
  display: grid;
  grid-template-columns: 0.88fr 1.12fr;
  gap: 32px;
  align-items: center;
}

.proof-tags {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.proof-tags span {
  padding: 16px;
  border: 1px solid var(--brand-line);
  border-radius: 8px;
  background: var(--white);
  font-size: 14px;
  font-weight: 900;
  box-shadow: var(--shadow-card);
}

.process-panel,
.lead-panel {
  border-radius: 8px;
  color: var(--white);
  box-shadow: var(--shadow-hover);
}

.process-panel {
  padding: 32px;
  background: var(--brand-blue);
}

.process-panel p,
.lead-panel p {
  margin: 0;
  color: rgba(255, 255, 255, 0.8);
  font-size: 14px;
  font-weight: 900;
}

.process-panel h3,
.lead-panel h2 {
  margin: 12px 0 0;
  font-size: clamp(30px, 3vw, 52px);
  font-weight: 900;
  line-height: 1.18;
}

.process-panel div {
  display: grid;
  gap: 12px;
  margin-top: 28px;
}

.process-panel span {
  padding: 16px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.15);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.2);
  font-weight: 900;
}

.lead-panel {
  padding: 32px;
  background:
    linear-gradient(135deg, rgba(31, 116, 255, 0.98) 0%, rgba(20, 86, 213, 0.98) 62%, rgba(30, 188, 210, 0.98) 100%),
    repeating-linear-gradient(135deg, rgba(255, 255, 255, 0.13) 0 1px, transparent 1px 42px);
}

.lead-panel > span {
  display: block;
  margin-top: 20px;
  color: rgba(255, 255, 255, 0.85);
  font-weight: 700;
  line-height: 2;
}

.lead-metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 32px;
}

.lead-metrics div,
.trust-tags span {
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.15);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.2);
}

.lead-metrics div {
  padding: 16px;
}

.lead-metrics strong {
  display: block;
  font-size: 32px;
  font-weight: 900;
}

.lead-metrics span {
  display: block;
  margin-top: 4px;
  color: rgba(255, 255, 255, 0.8);
  font-size: 14px;
  font-weight: 700;
}

.trust-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

.trust-tags span {
  padding: 8px 12px;
  font-size: 12px;
  font-weight: 900;
}

.lead-form {
  padding: 28px;
  border-radius: 8px;
  background: var(--white);
  box-shadow: var(--shadow-hover);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.form-grid label {
  display: grid;
  gap: 8px;
  color: var(--brand-ink);
  font-size: 14px;
  font-weight: 700;
}

.form-grid .wide {
  grid-column: 1 / -1;
}

.form-grid input,
.form-grid select,
.form-grid textarea {
  width: 100%;
  border: 1px solid var(--brand-line);
  border-radius: 8px;
  outline: 0;
}

.form-grid input,
.form-grid select {
  height: 48px;
  padding: 0 16px;
}

.form-grid textarea {
  min-height: 112px;
  resize: vertical;
  padding: 12px 16px;
}

.form-grid input:focus,
.form-grid select:focus,
.form-grid textarea:focus {
  border-color: var(--brand-blue);
  box-shadow: 0 0 0 4px rgba(31, 116, 255, 0.1);
}

.form-message {
  margin: 16px 0 0;
  padding: 12px 16px;
  border-radius: 8px;
  background: var(--brand-soft);
  color: var(--brand-blue);
  font-size: 14px;
  font-weight: 700;
}

.full-width {
  width: 100%;
  margin-top: 20px;
  padding: 16px 24px;
  border: 0;
  cursor: pointer;
}

.site-footer {
  padding: 48px 0;
  background: #111827;
  color: rgba(255, 255, 255, 0.6);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr 1fr;
  gap: 32px;
  font-size: 14px;
}

.footer-grid h3 {
  margin: 0 0 16px;
  color: var(--white);
  font-size: 16px;
}

.footer-grid p {
  margin: 0;
  line-height: 1.9;
}

.footer-grid a {
  display: block;
  margin-top: 8px;
}

.footer-grid a:hover {
  color: var(--white);
}

.footer-bottom {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.4);
  font-size: 12px;
}

.mobile-sticky-cta {
  display: none;
}

@media (max-width: 1100px) {
  .site-nav {
    display: none;
  }

  .hero-grid,
  .proof-grid,
  .lead-grid {
    grid-template-columns: 1fr;
  }

  .stats-grid,
  .challenge-grid,
  .service-grid,
  .track-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 768px) {
  .page-shell,
  .header-inner {
    width: min(100% - 32px, 1280px);
  }

  .header-cta {
    display: none;
  }

  .hero-ribbon {
    display: none;
  }

  .hero-grid {
    padding-top: 32px;
    padding-bottom: 48px;
  }

  .hero-actions,
  .carousel-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .stats-grid,
  .challenge-grid,
  .service-grid,
  .track-grid,
  .proof-tags,
  .lead-metrics,
  .form-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .mobile-sticky-cta {
    position: fixed;
    z-index: 40;
    right: 16px;
    bottom: 16px;
    left: 16px;
    display: block;
    padding: 16px 20px;
    border-radius: 8px;
    background: var(--brand-blue);
    color: var(--white);
    text-align: center;
    font-weight: 900;
    box-shadow: var(--shadow-hover);
  }
}