*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text",
    "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    "Helvetica Neue", Arial, sans-serif;
  color: #020617;
  background:
    radial-gradient(circle at 0% 0%, #e0f2fe 0, transparent 45%),
    radial-gradient(circle at 85% 0%, #eff6ff 0, transparent 55%),
    linear-gradient(to bottom, #f9fafb 0, #f1f5f9 45%, #eef2ff 100%);
  -webkit-font-smoothing: antialiased;
}

.page-root {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 3.5rem 1.5rem 3.75rem;
}

@media (min-width: 768px) {
  .hero {
    padding: 4.5rem 2.5rem 4.5rem;
  }
}

.hero-bg-layer {
  position: absolute;
  border-radius: 999px;
  filter: blur(40px);
  opacity: 0.85;
  pointer-events: none;
}

.hero-bg-layer-1 {
  top: -6rem;
  right: -9rem;
  width: 18rem;
  height: 18rem;
  background: radial-gradient(circle at 30% 20%, #0ea5e9, transparent 60%);
}

.hero-bg-layer-2 {
  top: 35%;
  left: -8rem;
  width: 16rem;
  height: 16rem;
  background: radial-gradient(circle at 70% 50%, #e0f2fe, transparent 60%);
}

.hero-bg-layer-3 {
  right: 10%;
  bottom: -8rem;
  width: 26rem;
  height: 26rem;
  background: radial-gradient(circle at 30% 10%, #e0f2fe, transparent 60%);
}

.hero-inner {
  position: relative;
  max-width: 1120px;
  margin: 0 auto;
}

.hero-logo-row {
  display: flex;
  justify-content: center;
  margin-bottom: 2rem;
}

@media (min-width: 768px) {
  .hero-logo-row {
    margin-bottom: 2.75rem;
  }
}

.logo-combo {
  display: inline-flex;
  align-items: center;
  gap: 1rem;
}

.logo-spark {
  position: relative;
  width: 4.2rem;
  height: 4.2rem;
}

@media (min-width: 768px) {
  .logo-spark {
    width: 5.1rem;
    height: 5.1rem;
  }
}

.logo-spark-svg {
  width: 100%;
  height: 100%;
  display: block;
}

.logo-image {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  border-radius: 18px;
}

.logo-spark-glow {
  position: absolute;
  inset: 0;
  border-radius: 999px;
  background: rgba(56, 189, 248, 0.4);
  filter: blur(16px);
  z-index: -1;
}

.logo-text {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.logo-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin: 0;
  background: linear-gradient(90deg, #1d4ed8, #0ea5e9, #38bdf8);
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
}

@media (min-width: 768px) {
  .logo-title {
    font-size: 1.65rem;
  }
}

.logo-subtitle {
  margin: 0;
  font-size: 0.85rem;
  color: #64748b;
}

@media (min-width: 768px) {
  .logo-subtitle {
    font-size: 0.95rem;
  }
}

.hero-main {
  text-align: center;
  max-width: 880px;
  margin: 0 auto;
}

.hero-title {
  margin: 0 0 1.25rem;
  font-size: clamp(2rem, 6vw, 3.5rem);
  font-weight: 700;
  line-height: 1.25;
  color: #020617;
}

.hero-title-highlight {
  display: inline-block;
  background: linear-gradient(90deg, #1d4ed8, #0ea5e9, #38bdf8);
  background-size: 200% 200%;
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
  animation: hero-gradient 4s ease-in-out infinite;
}

@keyframes hero-gradient {
  0%,
  100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

.hero-subtitle {
  margin: 0 0 1.75rem;
  font-size: clamp(0.95rem, 2vw, 1.05rem);
  line-height: 1.7;
  color: #64748b;
}

.hero-subtitle-break {
  display: none;
}

@media (min-width: 768px) {
  .hero-subtitle-break {
    display: inline;
  }
}

.hero-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.85rem;
  margin-bottom: 2.25rem;
}

@media (min-width: 640px) {
  .hero-actions {
    flex-direction: row;
    justify-content: center;
  }
}

.btn {
  border: none;
  outline: none;
  border-radius: 999px;
  padding: 0.9rem 1.8rem;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease,
    color 0.18s ease, border-color 0.18s ease;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(90deg, #1d4ed8, #0ea5e9);
  color: #f9fafb;
  box-shadow: 0 16px 35px rgba(37, 99, 235, 0.35);
}

.btn-primary:hover {
  transform: translateY(-1px) scale(1.02);
  box-shadow: 0 20px 40px rgba(37, 99, 235, 0.45);
  background: linear-gradient(90deg, #2563eb, #0ea5e9);
}

.btn-primary:active {
  transform: translateY(0) scale(0.99);
  box-shadow: 0 10px 25px rgba(37, 99, 235, 0.35);
}

.btn-ghost {
  background: rgba(148, 163, 184, 0.06);
  border: 1px solid rgba(148, 163, 184, 0.6);
  color: #0f172a;
}

.btn-ghost:hover {
  background: rgba(148, 163, 184, 0.1);
  border-color: rgba(148, 163, 184, 0.9);
  transform: translateY(-1px) scale(1.02);
  box-shadow: 0 10px 25px rgba(148, 163, 184, 0.3);
}

.btn-ghost:active {
  transform: translateY(0) scale(0.99);
  box-shadow: 0 6px 16px rgba(148, 163, 184, 0.2);
}

.btn-on-dark {
  background: #f9fafb;
  color: #0f172a;
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.55);
}

.btn-on-dark:hover {
  background: #e5e7eb;
  transform: translateY(-1px) scale(1.02);
}

.btn-on-dark:active {
  transform: translateY(0) scale(0.99);
}

.btn-icon {
  font-size: 0.9rem;
  transition: transform 0.18s ease;
}

.btn:hover .btn-icon {
  transform: translateX(2px);
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.75rem;
}

.hero-stat {
  min-width: 9rem;
  text-align: center;
}

.hero-stat-number {
  font-size: clamp(1.4rem, 3vw, 2.1rem);
  font-weight: 600;
  margin-bottom: 0.2rem;
}

.hero-stat-label {
  font-size: 0.85rem;
  color: #64748b;
}

.text-sky {
  color: #0f766e;
}

.section {
  padding: 3.5rem 1.5rem;
}

@media (min-width: 768px) {
  .section {
    padding: 4.25rem 2.5rem;
  }
}

.section-inner {
  max-width: 1120px;
  margin: 0 auto;
}

.section-header {
  margin-bottom: 3rem;
}

.section-header-center {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 2.5rem;
}

.section-title {
  margin: 0 0 0.75rem;
  font-size: clamp(1.5rem, 3.2vw, 2.2rem);
  font-weight: 600;
  color: #020617;
}

.section-title-highlight {
  background: linear-gradient(90deg, #0284c7, #22c55e);
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
}

.section-subtitle {
  margin: 0;
  font-size: 0.95rem;
  color: #64748b;
  line-height: 1.7;
}

.section-features {
  background:
    radial-gradient(circle at 0% 0%, #e0f2fe, transparent 55%),
    linear-gradient(to bottom, #f8fafc 0%, #eef2ff 60%, #f8fafc 100%);
}

.features-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.6rem;
}

@media (min-width: 768px) {
  .features-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.feature-card {
  position: relative;
  padding: 1.25rem;
  border-radius: 1.25rem;
  background: #ffffff;
  border: 1px solid rgba(148, 163, 184, 0.25);
  box-shadow: 0 10px 26px rgba(15, 23, 42, 0.06);
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease,
    background-color 0.18s ease;
  overflow: hidden;
}

@media (min-width: 768px) {
  .feature-card {
    padding: 1.5rem;
  }
}

.feature-card::before {
  content: "";
  position: absolute;
  inset: -40%;
  background: radial-gradient(circle at top left, rgba(56, 189, 248, 0.14), transparent 55%);
  opacity: 0;
  transition: opacity 0.18s ease;
  pointer-events: none;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.14);
  border-color: rgba(59, 130, 246, 0.5);
}

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

.feature-icon-circle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.6rem;
  height: 2.6rem;
  border-radius: 999px;
  margin-bottom: 0.9rem;
  background: linear-gradient(135deg, #e0f2fe, #e5e7eb);
  color: #0ea5e9;
  font-size: 1.3rem;
  box-shadow: 0 10px 25px rgba(148, 163, 184, 0.4);
}

.feature-title {
  margin: 0 0 0.45rem;
  font-size: 1rem;
  font-weight: 600;
  color: #020617;
}

.feature-text {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: #64748b;
}

.section-steps {
  background: linear-gradient(180deg, #f8fafc 0%, #e5f0ff 50%, #f9fafb 100%);
}

.steps-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.8rem;
}

@media (min-width: 768px) {
  .steps-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.step-card {
  position: relative;
  text-align: center;
  padding: 1.6rem 1.2rem 1.5rem;
  border-radius: 1.5rem;
  background: #ffffff;
  border: 1px solid rgba(148, 163, 184, 0.25);
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.06);
  overflow: hidden;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.step-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.12);
  border-color: rgba(59, 130, 246, 0.45);
}

.step-icon-circle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3.1rem;
  height: 3.1rem;
  border-radius: 1.4rem;
  margin-bottom: 0.65rem;
  background: radial-gradient(circle at 30% 20%, #e0f2fe, #e5e7eb);
  color: #0284c7;
  font-size: 1.55rem;
}

.step-number {
  font-size: 1.5rem;
  font-weight: 600;
  color: rgba(59, 130, 246, 0.18);
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
}

.step-title {
  margin: 0 0 0.5rem;
  font-size: 1rem;
  font-weight: 600;
  color: #020617;
}

.step-text {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: #64748b;
}

.section-benefits {
  background: linear-gradient(180deg, #f8fafc 0%, #eff6ff 40%, #f9fafb 100%);
}

.section-inner-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2.75rem;
  align-items: center;
}

@media (min-width: 960px) {
  .section-inner-split {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.9fr);
  }
}

.benefits-text .section-title {
  margin-bottom: 0.9rem;
}

.benefits-subtitle {
  margin-bottom: 1.5rem;
}

.benefits-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.8rem;
}

@media (min-width: 720px) {
  .benefits-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.benefit-item {
  display: flex;
  align-items: flex-start;
  gap: 0.45rem;
  font-size: 0.9rem;
  color: #475569;
  line-height: 1.8;
}

.benefit-bullet {
  flex-shrink: 0;
  margin-top: 0.25rem;
}

.benefit-bullet-svg {
  width: 0.6rem;
  height: 0.6rem;
  display: block;
}

.benefits-visual {
  display: flex;
  justify-content: center;
  padding-top: 0.5rem;
}

.benefits-card {
  width: 100%;
  max-width: 380px;
  border-radius: 1.75rem;
  background: #ffffff;
  border: 1px solid #e5e7eb;
  padding: 1.4rem 1.5rem 1.5rem;
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.04);
}

.benefits-chart {
  position: relative;
  border-radius: 1.25rem;
  height: 12rem;
  margin-bottom: 1rem;
  overflow: hidden;
  background: #f9fafb;
}

.benefits-chart-svg {
  width: 100%;
  height: 100%;
  display: block;
}

.benefits-chart-legend {
  position: absolute;
  left: 1.25rem;
  right: 1.25rem;
  bottom: 0.7rem;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 0.5rem;
  font-size: 0.7rem;
  color: #0f172a;
}

.legend-dot {
  display: inline-flex;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 999px;
}

.legend-dot-1 {
  background: #0ea5e9;
}

.legend-dot-2 {
  background: #1d4ed8;
}

.legend-text {
  opacity: 0.8;
}

.benefits-skeleton {
  display: grid;
  gap: 0.4rem;
}

.skeleton-line {
  height: 0.5rem;
  border-radius: 999px;
  background: linear-gradient(
    90deg,
    #e5e7eb 0%,
    #f3f4f6 20%,
    #e5e7eb 40%,
    #e5e7eb 100%
  );
  background-size: 200% 100%;
  animation: skeleton-shimmer 2s ease-in-out infinite;
}

.skeleton-line-1 {
  width: 80%;
}

.skeleton-line-2 {
  width: 95%;
}

.skeleton-line-3 {
  width: 60%;
}

@keyframes skeleton-shimmer {
  0% {
    background-position: -150% 0;
  }
  100% {
    background-position: 150% 0;
  }
}

.section-final-cta {
  position: relative;
  padding: 3.25rem 1.5rem 3.5rem;
  background: radial-gradient(circle at top left, #1d4ed8, #0f172a 55%);
  color: #e5e7eb;
  overflow: hidden;
}

@media (min-width: 768px) {
  .section-final-cta {
    padding: 3.75rem 2.5rem 4.25rem;
  }
}

.final-cta-bg-layer {
  position: absolute;
  border-radius: 999px;
  filter: blur(36px);
  opacity: 0.8;
}

.final-cta-bg-1 {
  top: -5rem;
  left: 18%;
  width: 16rem;
  height: 16rem;
  background: radial-gradient(circle at 40% 0%, rgba(248, 250, 252, 0.9), transparent 60%);
}

.final-cta-bg-2 {
  bottom: -7rem;
  right: 20%;
  width: 18rem;
  height: 18rem;
  background: radial-gradient(circle at 60% 100%, rgba(56, 189, 248, 0.7), transparent 60%);
}

/* 低调的右侧示意卡片文案样式 */
.benefits-card-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: #0f172a;
  margin: 0 0 0.35rem;
}

.benefits-card-caption {
  font-size: 0.8rem;
  color: #6b7280;
  margin: 0 0 0.8rem;
}

.benefits-card-meta {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.45rem;
  font-size: 0.8rem;
  color: #4b5563;
}

.benefits-card-meta-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.benefits-card-meta-dot {
  width: 0.35rem;
  height: 0.35rem;
  border-radius: 999px;
  background: #e5e7eb;
}

.final-cta-inner {
  position: relative;
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.final-cta-title {
  margin: 0 0 0.85rem;
  font-size: clamp(1.55rem, 3.3vw, 2.1rem);
  font-weight: 600;
}

.final-cta-subtitle {
  margin: 0 0 1.4rem;
  font-size: 0.95rem;
  line-height: 1.8;
  color: #e5e7eb;
}

.page-footer {
  padding: 1.9rem 1.5rem 2.1rem;
  background: #ffffff;
  border-top: 1px solid rgba(148, 163, 184, 0.35);
}

@media (min-width: 768px) {
  .page-footer {
    padding: 2.2rem 2.5rem 2.5rem;
  }
}

.footer-inner {
  max-width: 1120px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.footer-main {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

@media (min-width: 768px) {
  .footer-main {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    gap: 1.5rem;
  }
}

.footer-logo-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.footer-logo-spark {
  width: 2.4rem;
  height: 2.4rem;
}

.footer-text {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.footer-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: #020617;
}

.footer-subtitle {
  margin: 0;
  font-size: 0.8rem;
  color: #64748b;
}

.footer-desc {
  font-size: 0.8rem;
  color: #64748b;
  line-height: 1.7;
}

.footer-desc-line {
  margin: 0;
}

.footer-bottom {
  padding-top: 1rem;
  border-top: 1px solid rgba(226, 232, 240, 0.9);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: #94a3b8;
  text-align: center;
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    text-align: left;
  }
}

.footer-icp {
  margin: 0;
}

.footer-icp-link {
  color: #64748b;
  text-decoration: none;
}

.footer-icp-link:hover {
  color: #0284c7;
  text-decoration: underline;
}

.footer-copyright {
  margin: 0;
}

.dialog-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.4);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  z-index: 50;
}

.dialog-backdrop.is-open {
  display: flex;
}

.dialog {
  width: 100%;
  max-width: 400px;
  background: #ffffff;
  border-radius: 1.25rem;
  padding: 1.4rem 1.4rem 1.2rem;
  box-shadow: 0 20px 50px rgba(15, 23, 42, 0.3);
  border: 1px solid rgba(148, 163, 184, 0.4);
}

@media (min-width: 480px) {
  .dialog {
    padding: 1.6rem 1.7rem 1.3rem;
  }
}

.dialog-title {
  margin: 0 0 0.5rem;
  font-size: 1rem;
  font-weight: 600;
  color: #020617;
}

.dialog-body {
  margin: 0 0 0.9rem;
  font-size: 0.9rem;
  color: #64748b;
  line-height: 1.7;
}

.dialog-btn {
  width: 100%;
  margin-top: 0.35rem;
}