/* 关于我们：1440px 桌面稿。各区块限制在公共 1200px 内容宽度内。 */
.about-page {
  min-height: 100vh;
  padding-top: 72px;
  background: var(--bg);
}

.about-page .site-header {
  background: var(--bg);
  border-bottom-color: var(--line-soft);
}

.about-page .site-header__login {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  padding-inline: 16px;
  border-radius: 999px;
  background: linear-gradient(135deg, #ff4a7b 15%, #ec237f 51%, #93226f 85%);
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  line-height: 20px;
  white-space: nowrap;
}

.about-main {
  width: min(calc(100% - 48px), var(--page-width));
  margin-inline: auto;
}

.about-intro {
  display: block;
}

.about-intro__heading {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
  padding: 64px 0 16px;
}

.about-kicker,
.about-app__kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 18px;
  margin: 0;
  color: var(--accent-hot);
  font-size: 13px;
  font-weight: 500;
  line-height: 18px;
  letter-spacing: .12em;
}

.about-kicker__bar {
  width: 18px;
  height: 2px;
  flex: 0 0 18px;
  background: var(--accent);
}

.about-intro__title {
  max-width: 900px;
  margin: 0;
  color: var(--text);
  font-size: 40px;
  font-weight: 600;
  line-height: 50px;
  letter-spacing: -.01em;
}

.about-intro__subtitle {
  margin: 0;
  color: var(--text-muted);
  font-size: 18px;
  font-weight: 400;
  line-height: 30px;
}

.about-story {
  display: grid;
  grid-template-columns: minmax(0, 624fr) minmax(0, 520fr);
  align-items: start;
  gap: 56px;
  padding: 24px 0;
}

.about-story__copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 20px;
  min-width: 0;
}

.about-story__paragraph {
  width: 100%;
  margin: 0;
  color: var(--text-muted);
  font-size: 16px;
  font-weight: 400;
  line-height: 26px;
}

.about-story__paragraph--mobile {
  display: none;
}

.about-story__slogan {
  margin: 0;
  color: var(--accent-hot);
  font-size: 18px;
  font-weight: 600;
  line-height: 26px;
}

.about-story__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  width: 100%;
}

.about-story__tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  padding-inline: 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 400;
  line-height: 20px;
  white-space: nowrap;
}

.about-story__visual {
  width: 100%;
  aspect-ratio: 13 / 9;
  overflow: hidden;
  border: 1px solid var(--line-soft);
  border-radius: 20px;
  background: var(--bg-panel);
}

.about-story__visual > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about-features {
  padding: 24px 0 16px;
}

.about-features__heading {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 30px;
  margin-bottom: 24px;
}

.about-features__title {
  margin: 0;
  color: var(--text);
  font-size: 22px;
  font-weight: 600;
  line-height: 30px;
}

.about-features__subtitle {
  margin: 0;
  color: var(--text-dim);
  font-size: 14px;
  font-weight: 400;
  line-height: 22px;
}

.about-features__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.about-feature {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
  min-height: 192px;
  padding: 28px;
  border: 1px solid var(--line-soft);
  border-radius: 16px;
  background: var(--bg-panel);
}

.about-feature__number {
  display: block;
  width: fit-content;
  background: linear-gradient(180deg, #ff4a7b 0%, #ec237f 52%, #93226f 100%);
  background-clip: text;
  color: transparent;
  font-family: Inter, var(--font);
  font-size: 40px;
  font-weight: 700;
  line-height: 40px;
  letter-spacing: -.03em;
  -webkit-background-clip: text;
}

.about-feature__title {
  margin: 0;
  color: var(--text);
  font-size: 20px;
  font-weight: 600;
  line-height: 28px;
}

.about-feature__copy {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.about-feature__description {
  margin: 0;
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 400;
  line-height: 22px;
}

.about-app {
  padding: 16px 0 48px;
}

.about-app__card {
  display: flex;
  align-items: center;
  gap: 20px;
  min-height: 216px;
  padding: 28px 32px;
  border: 1px solid var(--line-soft);
  border-radius: 20px;
  background: linear-gradient(90deg, #2a0d22 0%, #150a17 60%, #141417 100%);
}

.about-app__copy {
  display: flex;
  flex: 1 1 auto;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  min-width: 0;
}

.about-app__title {
  margin: 0;
  color: var(--text);
  font-size: 22px;
  font-weight: 600;
  line-height: 30px;
}

.about-app__desc-desktop,
.about-app__desc-mobile,
.about-app__note-desktop,
.about-app__note-mobile {
  margin: 0;
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 400;
  line-height: 22px;
}

.about-app__note-desktop,
.about-app__note-mobile {
  color: var(--text-dim);
  font-size: 12px;
  line-height: 18px;
}

.about-app__desc-mobile,
.about-app__note-mobile,
.about-app__button-label-mobile {
  display: none;
}

.about-app__qr {
  width: 108px;
  height: 108px;
  flex: 0 0 108px;
  padding: 6px;
  border-radius: 12px;
  background: #fff;
}

.about-app__qr > img {
  width: 96px;
  height: 96px;
  object-fit: contain;
}

.about-app__actions {
  display: flex;
  flex: 0 0 220px;
  flex-direction: column;
  gap: 8px;
  width: 220px;
}

.about-app__button {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  height: 48px;
  padding-inline: 22px;
  border: 1px solid rgba(255, 255, 255, .24);
  border-radius: 999px;
  color: var(--text);
  font-size: 15px;
  font-weight: 500;
  line-height: 22px;
  white-space: nowrap;
}

.about-app__button.is-primary {
  border-color: transparent;
  background: linear-gradient(135deg, #ff4a7b 15%, #ec237f 51%, #93226f 85%);
  color: #fff;
}

.about-app__button img,
.about-app__button svg {
  width: 20px;
  height: 20px;
  flex: 0 0 20px;
}

.about-app__recommendation {
  position: absolute;
  top: -8px;
  right: -5px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 20px;
  padding-inline: 7px;
  border-radius: 999px;
  background: #fff;
  color: var(--accent-hot);
  font-size: 11px;
  font-weight: 500;
  line-height: 14px;
}

.about-app__button:hover {
  filter: brightness(1.1);
}

.about-app__button:focus-visible,
.about-page .site-header__login:focus-visible {
  outline: 2px solid var(--accent-hot);
  outline-offset: 3px;
}

/* 页尾内容沿用公共组件，桌面稿的两段法律文案分列两端。 */
.about-page .site-footer__legal {
  flex-direction: row;
  justify-content: space-between;
  gap: 24px;
}

@media (min-width: 769px) {
  .about-page .site-footer__rule {
    margin-top: 8px;
  }
}

@media (min-width: 769px) and (max-width: 1199px) {
  .about-page .site-header {
    height: 72px;
    padding-block: 0;
    flex-wrap: nowrap;
  }

  .about-page .site-header__left,
  .about-page .site-header__right {
    width: auto;
  }

  .about-page .site-header .search {
    width: min(260px, 30vw);
  }

  .about-story {
    gap: clamp(24px, 4vw, 56px);
  }
}

@media (min-width: 769px) and (max-width: 1100px) {
  .about-page .site-header .nav {
    display: none;
  }
}