:root {
  --about-ink: #16120f;
  --about-copy: #5d5048;
  --about-muted: #9d9289;
  --about-orange: #ff8b24;
  --about-canvas: #fbf9f5;
  --about-panel: #fff;
  color: var(--about-ink);
  background: var(--about-canvas);
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  font-synthesis: none;
  letter-spacing: 0;
}

* { box-sizing: border-box; }

html,
body {
  min-width: 300px;
  min-height: 100%;
  margin: 0;
}

body {
  color: var(--about-ink);
  background: var(--about-canvas);
}

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

.about-main {
  width: min(100%, 1100px);
  margin: 0 auto;
  padding: 0 12px 28px;
}

.about-hero {
  position: relative;
  height: 159px;
  margin: 0 -12px;
  overflow: hidden;
}

.about-hero__backdrop {
  position: absolute;
  inset: 0;
  width: 100%;
  height: auto;
  max-width: none;
  pointer-events: none;
}

.about-hero__copy {
  position: relative;
  z-index: 1;
  width: min(65%, 560px);
  padding: 20px 0 0 20px;
}

.about-hero__tag {
  display: inline-block;
  margin: 0 0 10px;
  padding: 3px 8px;
  border-radius: 999px;
  color: #ff7d18;
  background: #fff2e4;
  font-size: 12px;
  font-weight: 600;
  line-height: 1.2;
}

.about-hero h1 {
  margin: 0;
  font-size: 30px;
  font-weight: 700;
  line-height: 1.3;
}

.about-hero__description { display: none; }

.about-panel {
  position: relative;
  z-index: 2;
  padding: 16px;
  border: 0;
  border-radius: 14px;
  background: var(--about-panel);
  box-shadow: 0 1px 9px rgba(103, 69, 33, 0.025);
}

.about-overview { margin-top: -15px; }
.about-downloads { margin-top: 10px; }

.about-panel__heading {
  display: flex;
  min-height: 34px;
  align-items: center;
  gap: 8px;
}

.about-panel__heading img {
  width: 32px;
  height: 32px;
  object-fit: contain;
}

.about-panel__heading h2 {
  margin: 0;
  font-size: 20px;
  font-weight: 700;
  line-height: 1.35;
}

.about-overview__copy { margin-top: 14px; }

.about-overview__copy p {
  margin: 0;
  color: var(--about-copy);
  font-size: 14px;
  line-height: 1.8;
}

.about-overview__copy p + p { margin-top: 9px; }

.about-capabilities h3 {
  display: flex;
  margin: 14px 0 10px;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.4;
}

.about-capabilities h3::before {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--about-orange);
  content: "";
}

.about-capabilities__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.about-capability {
  display: flex;
  min-width: 0;
  min-height: 112px;
  padding: 12px 4px 10px;
  border-radius: 9px;
  background: #fffbf7;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  text-align: center;
}

.about-capability img {
  width: 48px;
  height: 48px;
  object-fit: contain;
}

.about-capability h4 {
  max-width: 100%;
  margin: 5px 0 0;
  overflow-wrap: anywhere;
  font-size: 13px;
  font-weight: 500;
  line-height: 1.35;
}

.about-capability p {
  margin: 1px 0 0;
  color: var(--about-muted);
  font-size: 12px;
  line-height: 1.35;
}

.about-downloads__list {
  margin: 13px 0 0;
  padding: 0;
  border-top: 1px solid #f6f2ed;
  list-style: none;
}

.about-downloads__list li {
  display: grid;
  min-height: 52px;
  border-bottom: 1px solid #f6f2ed;
  grid-template-columns: 34px minmax(0, 1fr) 30px;
  align-items: center;
  column-gap: 10px;
}

.about-downloads__list li:last-child { border-bottom: 0; }

.about-downloads__list img {
  width: 28px;
  height: 28px;
  object-fit: contain;
}

.about-downloads__list span {
  overflow-wrap: anywhere;
  font-size: 14px;
  line-height: 1.35;
}

.about-downloads__action {
  display: grid;
  width: 25px;
  height: 25px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  color: #fff;
  background: var(--about-orange);
  place-items: center;
  text-decoration: none;
}

.about-downloads__action[aria-disabled="true"] { cursor: not-allowed; }

.about-downloads__action:not([aria-disabled="true"]):hover { background: #f97316; }

.about-downloads__action:focus-visible {
  outline: 3px solid rgba(255, 139, 36, 0.3);
  outline-offset: 2px;
}

.about-downloads__list svg {
  width: 14px;
  height: 14px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

@media (min-width: 480px) and (max-width: 719px) {
  .about-main { padding: 0 16px 44px; }

  .about-hero {
    height: 220px;
    margin: 0 -16px;
  }

  .about-hero__copy {
    width: min(58%, 330px);
    padding: 32px 0 0 28px;
  }

  .about-hero__tag { margin-bottom: 12px; }
  .about-hero h1 { font-size: 30px; }

  .about-hero__description {
    display: block;
    max-width: 300px;
    margin: 10px 0 0;
    color: var(--about-copy);
    font-size: 13px;
    line-height: 1.7;
  }

  .about-panel { padding: 20px; border-radius: 16px; }
  .about-overview { margin-top: -24px; }
  .about-downloads { margin-top: 14px; }
  .about-panel__heading { gap: 9px; }
  .about-capabilities h3 { margin-top: 16px; }
  .about-capabilities__grid { gap: 10px; }
  .about-capability { min-height: 118px; padding: 13px 6px 10px; border-radius: 9px; }
  .about-capability img { width: 50px; height: 50px; }
  .about-capability h4 { margin-top: 5px; }
}

@media (min-width: 720px) {
  .about-main {
    width: min(100%, 768px);
    padding: 0 32px 72px;
  }

  .about-hero {
    height: clamp(290px, 35vw, 380px);
    margin: 0 -32px;
  }

  .about-hero__copy { padding: clamp(48px, 7vw, 92px) 0 0 clamp(44px, 7vw, 88px); }
  .about-hero__tag { margin-bottom: 14px; padding: 5px 12px; }
  .about-hero h1 { font-size: 44px; }

  .about-hero__description {
    display: block;
    max-width: 460px;
    margin: 14px 0 0;
    color: var(--about-copy);
    font-size: 14px;
    line-height: 1.8;
  }

  .about-panel { padding: 28px 32px; border-radius: 18px; }
  .about-overview { margin-top: -28px; }
  .about-downloads { margin-top: 18px; }
  .about-panel__heading { min-height: 38px; gap: 10px; }
  .about-panel__heading img { width: 36px; height: 36px; }
  .about-panel__heading h2 { font-size: 20px; }
  .about-overview__copy { max-width: 820px; margin-top: 18px; }
  .about-overview__copy p { font-size: 14px; line-height: 1.9; }
  .about-overview__copy p + p { margin-top: 10px; }
  .about-capabilities h3 { margin: 22px 0 12px; font-size: 14px; }
  .about-capabilities__grid { gap: 14px; }
  .about-capability { min-height: 142px; padding: 16px 8px 12px; border-radius: 10px; }
  .about-capability img { width: 62px; height: 62px; }
  .about-capability h4 { margin-top: 7px; }
  .about-downloads__list { margin-top: 16px; }
  .about-downloads__list li { min-height: 55px; grid-template-columns: 38px minmax(0, 1fr) 32px; column-gap: 12px; }
  .about-downloads__list img { width: 30px; height: 30px; }
  .about-downloads__list span { font-size: 14px; }
  .about-downloads__action { width: 27px; height: 27px; }
  .about-downloads__list svg { width: 15px; height: 15px; }
}

@media (min-width: 960px) {
  .about-content-grid {
    position: relative;
    z-index: 2;
    display: grid;
    margin-top: -32px;
    grid-template-columns: minmax(0, 2fr) minmax(320px, 0.9fr);
    gap: 20px;
    align-items: stretch;
  }

  .about-overview,
  .about-downloads { margin-top: 0; }

  .about-overview__copy { max-width: none; }
  .about-downloads__list li { min-height: 59px; }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after { scroll-behavior: auto !important; }
}