.about-page {
  --about-gutter: clamp(20px, 4vw, 40px);
  --about-section-space: 92px;
  overflow: hidden;
  background: var(--paper);
}

.about-hero {
  position: relative;
  overflow: hidden;
  min-height: 690px;
  padding: 162px var(--about-gutter) 86px;
  color: var(--text);
  background:
    radial-gradient(circle at 86% 18%, rgba(23, 109, 255, 0.1), transparent 29%),
    linear-gradient(180deg, #fff 0%, #fbfdff 63%, var(--mist) 100%);
}

.about-hero::before {
  position: absolute;
  top: 116px;
  right: max(-90px, calc((100vw - 1220px) / 2 - 120px));
  width: min(560px, 46vw);
  height: min(480px, 40vw);
  background: url("../images/zhikai-logo.png") center / contain no-repeat;
  content: "";
  opacity: 0.035;
  pointer-events: none;
}

.about-hero::after {
  position: absolute;
  right: -120px;
  bottom: -80px;
  width: 620px;
  height: 360px;
  border: 1px solid rgba(23, 109, 255, 0.08);
  background:
    linear-gradient(135deg, transparent 0 46%, rgba(16, 185, 200, 0.12) 46% 48%, transparent 48%),
    linear-gradient(25deg, transparent 0 56%, rgba(23, 109, 255, 0.12) 56% 58%, transparent 58%);
  content: "";
  opacity: 0.68;
  transform: rotate(-10deg);
}

.about-hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 0.94fr) minmax(360px, 0.58fr);
  gap: 72px;
  width: min(var(--container), 100%);
  margin: 0 auto;
  align-items: center;
}

.about-hero-copy h1 {
  max-width: 760px;
  margin-bottom: 24px;
  color: var(--navy);
  font-size: 62px;
  line-height: 1.08;
  letter-spacing: 0;
}

.about-hero-copy p {
  max-width: 760px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.9;
}

.about-hero-actions,
.about-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

.about-hero .btn-primary {
  color: #fff;
  background: var(--navy);
  box-shadow: 0 12px 26px rgba(7, 27, 49, 0.16);
}

.about-hero .btn-secondary {
  border-color: rgba(7, 27, 49, 0.18);
  color: var(--navy);
  background: rgba(255, 255, 255, 0.76);
}

.about-hero-panel {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  padding: 24px;
  border: 1px solid rgba(7, 27, 49, 0.1);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(248, 251, 254, 0.92)), var(--paper);
  box-shadow: var(--shadow-lift);
  backdrop-filter: blur(18px);
}

.about-hero-panel span {
  display: grid;
  min-height: 126px;
  place-items: end start;
  padding: 18px;
  border: 1px solid rgba(7, 27, 49, 0.08);
  border-radius: var(--radius-md);
  color: var(--navy);
  background:
    radial-gradient(circle at 86% 18%, rgba(23, 109, 255, 0.12), transparent 36%),
    #fbfdff;
  font-size: 17px;
  font-weight: 850;
}

.about-section {
  padding: var(--about-section-space) var(--about-gutter);
}

.about-story-section,
.about-capabilities-section,
.about-tech-section {
  background: var(--paper);
}

.about-trust-section {
  background: var(--mist);
}

.about-story-layout {
  display: grid;
  grid-template-columns: minmax(240px, 0.42fr) minmax(0, 1fr);
  gap: 52px;
  width: min(var(--container), 100%);
  margin: 0 auto;
  align-items: start;
}

.about-section-label h2,
.about-methodology-copy h2,
.about-tech-copy h2 {
  margin-bottom: 18px;
  color: var(--navy);
  font-size: 40px;
  line-height: 1.16;
  letter-spacing: 0;
}

.about-section-label p:not(.section-kicker),
.about-methodology-copy p,
.about-tech-copy p {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.85;
}

.about-story-card.post-content {
  width: auto;
  margin: 0;
  padding: 32px;
  border: 1px solid rgba(7, 27, 49, 0.09);
  border-radius: var(--radius-lg);
  background: #fff;
  box-shadow: var(--shadow-soft);
}

.about-story-card.post-content > *:first-child {
  margin-top: 0;
}

.about-story-card.post-content > *:last-child {
  margin-bottom: 0;
}

.about-capability-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
  width: min(var(--container), 100%);
  margin: 0 auto;
}

.about-capability-card,
.about-method-card,
.about-trust-card {
  border: 1px solid rgba(7, 27, 49, 0.09);
  border-radius: var(--radius-md);
  background: #fff;
  box-shadow: var(--shadow-soft);
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.about-capability-card:hover,
.about-method-card:hover,
.about-trust-card:hover {
  border-color: rgba(23, 109, 255, 0.26);
  box-shadow: var(--shadow-lift);
  transform: translateY(-5px);
}

.about-capability-card {
  min-height: 276px;
  padding: 28px;
}

.about-card-icon,
.about-tech-tags svg {
  color: var(--blue);
}

.about-card-icon {
  display: grid;
  width: 54px;
  height: 54px;
  margin-bottom: 28px;
  place-items: center;
  border: 1px solid rgba(23, 109, 255, 0.12);
  border-radius: var(--radius-md);
  background: #eef6ff;
}

.about-card-icon svg,
.about-tech-tags svg {
  width: 25px;
  height: 25px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.about-capability-card h3,
.about-method-card h3,
.about-trust-card h3 {
  margin-bottom: 10px;
  color: var(--ink);
  font-size: 21px;
  line-height: 1.3;
}

.about-capability-card p,
.about-method-card p,
.about-trust-card p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.78;
}

.about-section.about-methodology {
  display: grid;
  grid-template-columns: minmax(0, 0.74fr) minmax(0, 1fr);
  gap: 70px;
  width: min(var(--container), calc(100% - 40px));
  margin: 0 auto;
  padding-right: 0;
  padding-left: 0;
  align-items: start;
}

.about-methodology-list {
  display: grid;
  gap: 16px;
}

.about-method-card {
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr);
  gap: 20px;
  padding: 24px;
}

.about-method-card > span {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  border-radius: 50%;
  color: var(--blue);
  background: #eef6ff;
  font-size: 13px;
  font-weight: 900;
}

.about-tech-panel {
  display: grid;
  grid-template-columns: minmax(0, 0.78fr) minmax(340px, 0.72fr);
  gap: 44px;
  width: min(var(--container), 100%);
  margin: 0 auto;
  padding: 42px;
  border: 1px solid rgba(255, 255, 255, 0.11);
  border-radius: var(--radius-lg);
  color: #fff;
  background:
    linear-gradient(135deg, rgba(7, 27, 49, 0.98), rgba(10, 48, 88, 0.96)),
    var(--navy);
  box-shadow: var(--shadow-lift);
  align-items: center;
}

.about-tech-copy .section-kicker,
.about-tech-copy h2,
.about-tech-copy p {
  color: #fff;
}

.about-tech-copy p {
  opacity: 0.76;
}

.about-tech-tags {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.about-tech-tags span {
  display: flex;
  min-height: 92px;
  align-items: center;
  gap: 12px;
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius-md);
  color: rgba(255, 255, 255, 0.92);
  background: rgba(255, 255, 255, 0.08);
  font-size: 15px;
  font-weight: 850;
}

.about-tech-tags svg {
  flex: 0 0 auto;
  color: var(--cyan);
}

.about-trust-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
  width: min(var(--container), 100%);
  margin: 0 auto;
}

.about-trust-card {
  min-height: 218px;
  padding: 28px;
}

.about-trust-card strong {
  display: block;
  margin-bottom: 18px;
  color: var(--navy);
  font-size: 42px;
  line-height: 1.05;
}

.about-cta-section {
  padding: 0 var(--about-gutter) 96px;
}

.about-cta-inner {
  display: flex;
  width: min(var(--container), 100%);
  margin: 0 auto;
  align-items: center;
  justify-content: space-between;
  gap: 34px;
  padding: 46px;
  border-radius: var(--radius-lg);
  color: #fff;
  background:
    linear-gradient(135deg, rgba(7, 27, 49, 0.98), rgba(23, 109, 255, 0.78)),
    var(--navy);
  box-shadow: var(--shadow-lift);
}

.about-cta-inner .section-kicker,
.about-cta-inner h2,
.about-cta-inner p {
  color: #fff;
}

.about-cta-inner h2 {
  margin-bottom: 12px;
  font-size: 38px;
  line-height: 1.18;
}

.about-cta-inner p:not(.section-kicker) {
  max-width: 680px;
  margin-bottom: 0;
  opacity: 0.78;
}

.about-cta-actions {
  flex: 0 0 auto;
  margin-top: 0;
}

.about-cta-inner .btn-primary {
  color: var(--navy);
  background: #fff;
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.18);
}

.about-cta-inner .btn-secondary {
  border-color: rgba(255, 255, 255, 0.32);
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
}

@media (max-width: 1080px) {
  .about-hero-inner,
  .about-story-layout,
  .about-section.about-methodology,
  .about-tech-panel {
    grid-template-columns: 1fr;
  }

  .about-hero-panel {
    max-width: 680px;
  }

  .about-capability-grid,
  .about-trust-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .about-cta-inner {
    display: grid;
  }
}

@media (max-width: 760px) {
  .about-page {
    --about-section-space: 68px;
  }

  .about-hero {
    min-height: auto;
    padding: 124px 16px 66px;
  }

  .about-hero-copy h1 {
    font-size: 40px;
    line-height: 1.12;
  }

  .about-hero-copy p {
    font-size: 15px;
    line-height: 1.82;
  }

  .about-hero-actions,
  .about-cta-actions {
    display: grid;
    gap: 12px;
  }

  .about-hero-actions .btn,
  .about-cta-actions .btn {
    width: 100%;
  }

  .about-hero-panel {
    grid-template-columns: 1fr;
    padding: 16px;
  }

  .about-hero-panel span {
    min-height: 84px;
  }

  .about-section {
    padding-right: 16px;
    padding-left: 16px;
  }

  .about-section-label h2,
  .about-methodology-copy h2,
  .about-tech-copy h2,
  .about-cta-inner h2 {
    font-size: 30px;
  }

  .about-story-card.post-content,
  .about-capability-card,
  .about-method-card,
  .about-trust-card {
    padding: 22px;
  }

  .about-capability-grid,
  .about-trust-grid {
    grid-template-columns: 1fr;
  }

  .about-section.about-methodology {
    width: calc(100% - 32px);
  }

  .about-method-card {
    grid-template-columns: 48px minmax(0, 1fr);
    gap: 14px;
  }

  .about-tech-panel {
    padding: 24px;
  }

  .about-tech-tags {
    grid-template-columns: 1fr;
  }

  .about-tech-tags span {
    min-height: 72px;
  }

  .about-cta-section {
    padding: 0 16px 68px;
  }

  .about-cta-inner {
    padding: 28px 22px;
    border-radius: var(--radius-md);
  }
}