.page-about {
  --c-about-soft: #10233c;
  --c-about-glow: rgba(245, 197, 24, 0.08);
  --c-about-navy: #0a1a2f;
  --c-about-cyan-deep: #0e4d5c;
  --c-about-wine-deep: #8a1c2d;
  --c-about-indigo-deep: #2a3b6e;
  --c-about-line: rgba(192, 200, 208, 0.16);
  background:
    radial-gradient(circle at 88% 4%, rgba(245, 197, 24, 0.06), transparent 22%),
    radial-gradient(circle at 12% 30%, rgba(255, 127, 0, 0.05), transparent 20%),
    linear-gradient(180deg, #061124 0%, #0a1a2f 36%, #061124 100%);
  color: var(--c-white, #ffffff);
  font-family: var(--font-body, Roboto, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif);
  line-height: 1.7;
  overflow: hidden;
  padding-bottom: 2rem;
}

.page-about .container {
  max-width: var(--container-max, 1200px);
  margin: 0 auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

.page-about .eyebrow {
  font-family: var(--font-number, "Roboto Mono", monospace);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-yellow, #f5c518);
  margin-bottom: 0.5rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.page-about .eyebrow::before {
  content: "";
  width: 1.8rem;
  height: 2px;
  background: var(--c-orange, #ff7f00);
  display: inline-block;
  transform: skewX(-18deg);
}

.page-about .section-title {
  font-family: var(--font-heading, Impact, Anton, "Arial Black", sans-serif);
  font-size: clamp(1.55rem, 4vw, 2.6rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: 0.01em;
  margin: 0 0 1.2rem;
  padding-left: 0.75rem;
  border-left: 6px solid var(--c-yellow, #f5c518);
  border-left-color: var(--c-yellow, #f5c518);
  max-width: 16em;
}

.page-about .data-number {
  font-family: var(--font-number, "Roboto Mono", monospace);
  font-weight: 700;
  display: block;
  color: var(--c-yellow, #f5c518);
}

.page-about .data-number--sm {
  font-size: 1rem;
  line-height: 1.3;
}

.page-about .data-number--lg {
  font-size: 2.2rem;
  line-height: 1.1;
}

.page-about .data-label {
  font-family: var(--font-body, Roboto, "Noto Sans SC", sans-serif);
  font-size: 0.82rem;
  color: var(--c-gray, #c0c8d0);
}

.page-about .tag {
  display: inline-flex;
  align-items: center;
  padding: 0.32rem 0.8rem;
  border-radius: var(--radius-pill, 999px);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--c-about-soft, #10233c);
  color: var(--c-gray, #c0c8d0);
}

.page-about .tag--accent {
  background: var(--c-yellow, #f5c518);
  color: var(--c-black, #111111);
  box-shadow: 0 2px 12px rgba(245, 197, 24, 0.28);
}

.page-about .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-pill, 999px);
  font-size: 0.92rem;
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
  border: 1px solid transparent;
}

.page-about .btn--primary {
  background: var(--c-yellow, #f5c518);
  color: var(--c-black, #111111);
  box-shadow: 0 6px 18px rgba(245, 197, 24, 0.24);
}

.page-about .btn--primary:hover {
  background: #ffd94d;
  box-shadow: 0 8px 24px rgba(245, 197, 24, 0.32);
  transform: translateY(-2px);
}

.page-about .btn--ghost {
  background: transparent;
  color: var(--c-white, #ffffff);
  border-color: rgba(255, 255, 255, 0.35);
}

.page-about .btn--ghost:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.65);
  transform: translateY(-2px);
}

.page-about .media__label {
  display: block;
  margin-top: 0.65rem;
  font-size: 0.78rem;
  color: var(--c-gray, #c0c8d0);
  font-family: var(--font-number, "Roboto Mono", monospace);
  letter-spacing: 0.05em;
}

.page-about img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-lg, 18px);
  box-shadow: var(--shadow-md, 0 8px 32px rgba(0, 0, 0, 0.35));
  object-fit: cover;
}

.page-about .about-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding-top: 1.4rem;
  padding-bottom: 0.6rem;
  font-size: 0.85rem;
  color: var(--c-gray, #c0c8d0);
}

.page-about .about-breadcrumb__divider {
  color: var(--c-orange, #ff7f00);
}

.page-about .about-breadcrumb a {
  color: var(--c-gray, #c0c8d0);
  text-decoration: none;
  transition: color 0.2s ease;
}

.page-about .about-breadcrumb a:hover {
  color: var(--c-yellow, #f5c518);
}

.page-about .about-hero {
  position: relative;
  padding: 1.6rem 0 2.6rem;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: 0.8rem;
  right: -3rem;
  width: 16rem;
  height: 16rem;
  background: radial-gradient(circle, rgba(245, 197, 24, 0.10), transparent 68%);
  z-index: 0;
}

.page-about .about-hero .container {
  position: relative;
  z-index: 1;
}

.page-about .about-hero__eyebrow {
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  color: var(--c-yellow, #f5c518);
}

.page-about .page-hero__title {
  font-family: var(--font-heading, Impact, Anton, "Arial Black", sans-serif);
  font-size: clamp(1.9rem, 5.6vw, 3.9rem);
  font-weight: 900;
  line-height: 1.1;
  margin: 0.65rem 0 1rem;
  max-width: 14em;
  letter-spacing: 0.005em;
  text-shadow: 0 4px 24px rgba(0, 0, 0, 0.6);
}

.page-about .page-hero__sub {
  font-size: clamp(0.98rem, 2vw, 1.16rem);
  line-height: 1.7;
  color: var(--c-gray, #c0c8d0);
  max-width: 43rem;
  margin: 0 0 1.8rem;
  padding: 0.9rem 1.1rem;
  border-left: 3px solid var(--c-orange, #ff7f00);
  background: linear-gradient(90deg, rgba(255, 127, 0, 0.08), transparent 68%);
}

.page-about .about-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem 1.2rem;
}

.page-about .about-hero__chip {
  background: var(--c-about-soft, #10233c);
  border: 1px solid var(--c-about-line, rgba(192, 200, 208, 0.16));
  border-radius: var(--radius-md, 12px);
  padding: 0.7rem 1rem;
  min-width: 6.8rem;
  box-shadow: var(--shadow-sm, 0 4px 14px rgba(0, 0, 0, 0.28));
}

.page-about .about-hero__chip .data-number {
  font-size: 1.45rem;
}

.page-about .about-hero__chip .data-label {
  font-size: 0.74rem;
}

.page-about .about-origin {
  padding: 2.6rem 0 3rem;
}

.page-about .about-origin__grid {
  display: flex;
  flex-direction: column;
  gap: 2.2rem;
}

.page-about .about-origin__text {
  flex: 1;
}

.page-about .about-origin__text p {
  color: var(--c-gray, #c0c8d0);
  line-height: 1.75;
  margin: 0.8rem 0;
  font-size: 0.96rem;
}

.page-about .about-origin__pain {
  display: flex;
  align-items: flex-start;
  gap: 0.8rem;
  background: linear-gradient(135deg, rgba(138, 28, 45, 0.16), rgba(138, 28, 45, 0.05));
  border: 1px solid rgba(138, 28, 45, 0.38);
  border-radius: var(--radius-md, 12px);
  padding: 0.9rem 1.1rem;
  margin-top: 1.4rem;
}

.page-about .about-origin__pain-icon {
  flex-shrink: 0;
  width: 1.7rem;
  height: 1.7rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--c-wine, #8a1c2d);
  color: var(--c-white, #ffffff);
  border-radius: 50%;
  font-weight: 900;
  font-family: var(--font-number, "Roboto Mono", monospace);
}

.page-about .about-origin__pain p {
  margin: 0;
  color: var(--c-white, #ffffff);
  font-size: 0.95rem;
}

.page-about .about-origin__timeline {
  flex: 1;
  padding-left: 0.5rem;
  border-left: 1px dashed var(--c-about-line, rgba(192, 200, 208, 0.16));
}

.page-about .about-origin__timeline-item {
  position: relative;
  padding: 0 0 1.6rem 1.6rem;
}

.page-about .about-origin__timeline-item::before {
  content: "";
  position: absolute;
  left: -0.33rem;
  top: 0.4rem;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--c-orange, #ff7f00);
  box-shadow: 0 0 0 4px rgba(255, 127, 0, 0.14);
}

.page-about .about-origin__timeline-card {
  background: var(--c-about-soft, #10233c);
  border-radius: var(--radius-md, 12px);
  padding: 0.8rem 1rem;
  border: 1px solid var(--c-about-line, rgba(192, 200, 208, 0.16));
}

.page-about .about-origin__timeline-card p {
  margin: 0.35rem 0 0;
  font-size: 0.86rem;
  color: var(--c-gray, #c0c8d0);
}

.page-about .about-milestones {
  padding: 2.4rem 0 3rem;
}

.page-about .about-milestones > .container:first-of-type {
  margin-bottom: 2rem;
}

.page-about .about-milestones__track {
  position: relative;
}

.page-about .about-milestones__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

.page-about .about-milestones__item {
  display: flex;
  flex-direction: row;
  align-items: stretch;
  gap: 1rem;
}

.page-about .about-milestones__line {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  min-width: 3.4rem;
  position: relative;
}

.page-about .about-milestones__line::after {
  content: "";
  position: absolute;
  top: 2.2rem;
  bottom: -1.2rem;
  left: 50%;
  width: 2px;
  transform: translateX(-50%);
  background: linear-gradient(180deg, rgba(245, 197, 24, 0.55), rgba(245, 197, 24, 0.06));
  box-shadow: 0 0 12px rgba(245, 197, 24, 0.12);
}

.page-about .about-milestones__item:last-child .about-milestones__line::after {
  display: none;
}

.page-about .about-milestones__node {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.4rem 0.7rem;
  border-radius: var(--radius-pill, 999px);
  background: var(--c-about-soft, #10233c);
  color: var(--c-yellow, #f5c518);
  font-family: var(--font-number, "Roboto Mono", monospace);
  font-size: 0.86rem;
  font-weight: 700;
  border: 1px solid rgba(255, 255, 255, 0.14);
  white-space: nowrap;
  position: relative;
  z-index: 1;
}

.page-about .about-milestones__node--accent {
  background: var(--c-yellow, #f5c518);
  color: var(--c-black, #111111);
  border-color: var(--c-yellow, #f5c518);
  box-shadow: 0 0 18px rgba(245, 197, 24, 0.35);
}

.page-about .about-milestones__card {
  background: var(--c-about-soft, #10233c);
  border-radius: var(--radius-md, 12px);
  border: 1px solid var(--c-about-line, rgba(192, 200, 208, 0.16));
  padding: 0.95rem 1.1rem;
  flex: 1;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.page-about .about-milestones__card:hover {
  border-color: rgba(245, 197, 24, 0.32);
  box-shadow: 0 0 0 4px rgba(245, 197, 24, 0.04);
}

.page-about .about-milestones__card h3 {
  margin: 0.2rem 0 0.35rem;
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--c-white, #ffffff);
}

.page-about .about-milestones__card p {
  margin: 0.3rem 0 0;
  font-size: 0.86rem;
  color: var(--c-gray, #c0c8d0);
  line-height: 1.6;
}

.page-about .about-milestones__card--accent {
  border-color: rgba(245, 197, 24, 0.42);
  background: linear-gradient(135deg, rgba(245, 197, 24, 0.12), rgba(255, 127, 0, 0.05));
  box-shadow: 0 4px 24px rgba(245, 197, 24, 0.10);
}

.page-about .about-milestones__card--accent h3 {
  color: var(--c-yellow, #f5c518);
}

.page-about .about-milestones__figure {
  margin: 2.2rem 0 0;
  padding: 0;
}

.page-about .about-milestones__figure img {
  border-radius: var(--radius-lg, 18px);
}

.page-about .about-upgrade {
  padding: 2.8rem 0 3rem;
  position: relative;
}

.page-about .about-upgrade::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 100%;
  background: linear-gradient(100deg, rgba(245, 197, 24, 0.055), transparent 45%);
  pointer-events: none;
}

.page-about .about-upgrade__banner {
  margin-bottom: 2rem;
}

.page-about .about-upgrade__banner .tag {
  margin-bottom: 0.9rem;
}

.page-about .about-upgrade__lead {
  font-size: 1.08rem;
  line-height: 1.75;
  color: var(--c-white, #ffffff);
  max-width: 38rem;
}

.page-about .about-upgrade__features {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2.4rem;
}

.page-about .about-upgrade__card {
  background: var(--c-about-soft, #10233c);
  border: 1px solid var(--c-about-line, rgba(192, 200, 208, 0.16));
  border-radius: var(--radius-lg, 18px);
  padding: 1.3rem 1.2rem;
  position: relative;
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.page-about .about-upgrade__card:hover {
  transform: translateY(-4px);
  border-color: rgba(245, 197, 24, 0.38);
}

.page-about .about-upgrade__card h3 {
  margin: 0.5rem 0 0.45rem;
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--c-white, #ffffff);
}

.page-about .about-upgrade__card p {
  color: var(--c-gray, #c0c8d0);
  font-size: 0.88rem;
  line-height: 1.65;
  margin: 0;
}

.page-about .about-upgrade__workflow {
  display: flex;
  flex-direction: column;
  gap: 1.8rem;
  background: linear-gradient(135deg, rgba(42, 59, 110, 0.20), rgba(14, 77, 92, 0.10));
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg, 18px);
  padding: 1.5rem 1.2rem;
}

.page-about .about-upgrade__workflow-info h3 {
  font-family: var(--font-heading, Impact, Anton, "Arial Black", sans-serif);
  font-size: 1.45rem;
  margin: 0.4rem 0 0.7rem;
}

.page-about .about-upgrade__workflow-info p {
  color: var(--c-gray, #c0c8d0);
  font-size: 0.92rem;
  line-height: 1.7;
  max-width: 30rem;
}

.page-about .about-upgrade__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.2rem;
}

.page-about .about-upgrade__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.page-about .about-upgrade__steps li {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid var(--c-about-line, rgba(192, 200, 208, 0.16));
  border-radius: var(--radius-md, 12px);
  padding: 0.75rem 0.95rem;
  transition: background 0.2s ease;
}

.page-about .about-upgrade__steps li:hover {
  background: rgba(245, 197, 24, 0.07);
}

.page-about .about-upgrade__step-num {
  font-family: var(--font-number, "Roboto Mono", monospace);
  color: var(--c-orange, #ff7f00);
  font-size: 1.15rem;
  font-weight: 700;
  min-width: 2rem;
}

.page-about .about-upgrade__steps p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--c-white, #ffffff);
}

.page-about .about-data {
  padding: 2.8rem 0 3rem;
}

.page-about .about-data__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.8rem;
  margin: 1.6rem 0 2.2rem;
}

.page-about .about-data__stat {
  background: var(--c-about-soft, #10233c);
  border-radius: var(--radius-md, 12px);
  padding: 1.1rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  border-top: 3px solid var(--c-yellow, #f5c518);
  box-shadow: var(--shadow-sm, 0 4px 14px rgba(0, 0, 0, 0.28));
}

.page-about .about-data__stat .data-number {
  font-size: 1.65rem;
  color: var(--c-yellow, #f5c518);
}

.page-about .about-data__stat .data-label {
  font-size: 0.78rem;
}

.page-about .about-data__content {
  display: flex;
  flex-direction: column;
  gap: 1.8rem;
  align-items: flex-start;
}

.page-about .about-data__figure {
  margin: 0;
  padding: 0;
  width: 100%;
}

.page-about .about-data__detail {
  flex: 1;
}

.page-about .about-data__detail h3 {
  font-family: var(--font-heading, Impact, Anton, "Arial Black", sans-serif);
  font-size: 1.25rem;
  margin: 0 0 0.85rem;
  color: var(--c-white, #ffffff);
}

.page-about .about-data__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.page-about .about-data__list li {
  position: relative;
  padding-left: 1.4rem;
  color: var(--c-gray, #c0c8d0);
  font-size: 0.92rem;
  line-height: 1.65;
}

.page-about .about-data__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62rem;
  width: 0.5rem;
  height: 0.5rem;
  background: var(--c-orange, #ff7f00);
  transform: rotate(45deg);
}

.page-about .about-data__list strong {
  color: var(--c-white, #ffffff);
}

.page-about .about-mission {
  padding: 2.8rem 0 3.2rem;
}

.page-about .about-mission__layout {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.page-about .about-mission__content {
  flex: 1;
}

.page-about .about-mission__content p {
  color: var(--c-gray, #c0c8d0);
  line-height: 1.75;
  font-size: 0.95rem;
  margin: 0 0 0.9rem;
}

.page-about .about-mission__content p.about-mission__statement {
  font-family: var(--font-heading, Impact, Anton, "Arial Black", sans-serif);
  font-size: 1.25rem;
  color: var(--c-yellow, #f5c518);
  padding: 0.7rem 0.9rem;
  background: linear-gradient(135deg, rgba(245, 197, 24, 0.10), transparent);
  border-left: 4px solid var(--c-orange, #ff7f00);
}

.page-about .about-mission__figure {
  margin: 0;
  padding: 0;
  width: 100%;
}

.page-about .about-mission__figure img {
  border-radius: var(--radius-lg, 18px);
  box-shadow: var(--shadow-md, 0 8px 32px rgba(0, 0, 0, 0.35));
}

.page-about .about-faq-link {
  padding: 0.5rem 0 3rem;
}

.page-about .about-faq-link__panel {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  justify-content: space-between;
  align-items: flex-start;
  background: linear-gradient(135deg, rgba(245, 197, 24, 0.10), rgba(255, 127, 0, 0.04)), var(--c-about-soft, #10233c);
  border: 1px solid rgba(245, 197, 24, 0.30);
  border-radius: var(--radius-lg, 18px);
  padding: 1.6rem 1.4rem;
}

.page-about .about-faq-link__panel h2 {
  margin: 0 0 0.45rem;
  font-family: var(--font-heading, Impact, Anton, "Arial Black", sans-serif);
  font-size: 1.4rem;
  color: var(--c-white, #ffffff);
}

.page-about .about-faq-link__panel p {
  margin: 0;
  color: var(--c-gray, #c0c8d0);
  font-size: 0.92rem;
  line-height: 1.65;
}

.page-about .about-faq-link__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

@media (min-width: 640px) {
  .page-about .container {
    padding-left: 2rem;
    padding-right: 2rem;
  }

  .page-about .about-hero__meta {
    gap: 0.9rem;
  }

  .page-about .about-upgrade__features {
    display: grid;
    grid-template-columns: 1fr;
  }

  .page-about .about-data__grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .about-data__stat {
    padding: 1.2rem 0.9rem;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 2.4rem 0 3.2rem;
  }

  .page-about .page-hero__title {
    font-size: clamp(2.4rem, 5vw, 4.2rem);
  }

  .page-about .page-hero__sub {
    font-size: 1.12rem;
  }

  .page-about .about-origin__grid {
    flex-direction: row;
    gap: 2.5rem;
    align-items: flex-start;
  }

  .page-about .about-origin__text,
  .page-about .about-origin__timeline {
    flex: 1;
  }

  .page-about .about-milestones__list {
    gap: 1.3rem;
  }

  .page-about .about-milestones__track {
    display: grid;
    grid-template-columns: 1.25fr 1fr;
    gap: 2.2rem;
    align-items: center;
  }

  .page-about .about-milestones__figure {
    margin: 0;
  }

  .page-about .about-upgrade__features {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.2rem;
  }

  .page-about .about-upgrade__workflow {
    flex-direction: row;
    gap: 2.5rem;
    padding: 1.8rem 2rem;
    align-items: center;
  }

  .page-about .about-upgrade__workflow-info {
    flex: 1;
  }

  .page-about .about-upgrade__steps {
    flex: 1;
  }

  .page-about .about-data__content {
    flex-direction: row;
    gap: 2.2rem;
  }

  .page-about .about-data__figure {
    flex: 1.15;
  }

  .page-about .about-data__detail {
    flex: 1;
  }

  .page-about .about-mission__layout {
    flex-direction: row;
    gap: 2.2rem;
    align-items: center;
  }

  .page-about .about-mission__content {
    flex: 1;
  }

  .page-about .about-mission__figure {
    flex: 1.15;
  }

  .page-about .about-faq-link__panel {
    flex-direction: row;
    align-items: center;
    padding: 1.8rem 2.2rem;
  }
}

@media (min-width: 1200px) {
  .page-about .container {
    padding-left: 2.5rem;
    padding-right: 2.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about * {
    transition: none !important;
    animation: none !important;
    scroll-behavior: auto !important;
  }
}