/* ===== 页面专属 CSS：APP下载 / products ===== */

/* Hero — 碳黑计分板 */
.page-products .products-hero {
  background: linear-gradient(135deg, #121212 0%, #1a1a1a 60%, rgba(27, 94, 32, 0.72) 160%);
  color: var(--fb-white);
  padding: 20px 0 56px;
  position: relative;
  overflow: hidden;
}
.page-products .products-hero > .content-wrap {
  position: relative;
  z-index: 1;
}
.page-products .products-hero::before {
  content: "";
  position: absolute;
  width: 340px;
  height: 340px;
  border: 2px solid rgba(255, 109, 0, 0.32);
  border-radius: 50%;
  top: -100px;
  right: -90px;
  z-index: 0;
}
.page-products .products-hero::after {
  content: "";
  position: absolute;
  left: -40px;
  bottom: -80px;
  width: 210px;
  height: 210px;
  background: rgba(27, 94, 32, 0.4);
  clip-path: polygon(0 0, 100% 0, 0 100%);
  z-index: 0;
}
.page-products .products-hero__breadcrumb {
  background: transparent;
  padding: 0 0 20px;
  margin: 0;
  font-size: 0.85rem;
}
.page-products .products-hero__breadcrumb a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
}
.page-products .products-hero__breadcrumb a:hover {
  color: var(--fb-white);
}
.page-products .products-hero__breadcrumb .breadcrumb__sep {
  color: var(--fb-orange);
  margin: 0 6px;
}
.page-products .products-hero__breadcrumb [aria-current="page"] {
  color: var(--fb-white);
}
.page-products .products-hero__grid {
  display: grid;
  gap: 44px;
  align-items: center;
}
.page-products .products-hero__visual {
  order: -1;
  position: relative;
  display: flex;
  justify-content: center;
}
.page-products .products-hero__version {
  display: inline-block;
  border: 1px solid var(--fb-gold);
  color: var(--fb-gold);
  font-family: var(--fb-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 6px 12px;
  border-radius: 2px;
  margin-bottom: 20px;
}
.page-products .products-hero h1 {
  font-family: var(--fb-heading);
  font-size: clamp(2.3rem, 7vw, 4.3rem);
  line-height: 1.05;
  margin: 0 0 18px;
  letter-spacing: 0.02em;
  color: var(--fb-white);
}
.page-products .products-hero__lead {
  font-size: clamp(1.05rem, 2.2vw, 1.28rem);
  font-weight: 600;
  margin: 0 0 14px;
  color: var(--fb-white);
}
.page-products .products-hero__desc {
  color: rgba(255, 255, 255, 0.78);
  line-height: 1.8;
  max-width: 56ch;
  margin: 0 0 28px;
}
.page-products .products-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 24px;
}
.page-products .products-hero__help-btn {
  border-color: rgba(255, 255, 255, 0.55);
  color: var(--fb-white);
}
.page-products .products-hero__help-btn:hover {
  border-color: var(--fb-white);
  background: rgba(255, 255, 255, 0.06);
}
.page-products .products-hero__meta {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  font-family: var(--fb-mono);
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.62);
}
.page-products .products-hero__meta li::before {
  content: "▶ ";
  color: var(--fb-orange);
  font-size: 0.62rem;
}
.page-products .products-hero__phone {
  position: relative;
  width: min(290px, 72vw);
  aspect-ratio: 9 / 19.5;
  background: var(--fb-carbon-light);
  border: 3px solid var(--fb-white);
  border-radius: 40px;
  padding: 10px;
  transform: rotate(6deg);
  transition: transform 0.65s cubic-bezier(0.2, 0.8, 0.2, 1);
  box-shadow: 22px 22px 0 var(--fb-orange);
}
.page-products .products-hero__visual.is-visible .products-hero__phone {
  transform: rotate(2deg) translateY(-10px);
}
.page-products .products-hero__phone-speaker {
  position: absolute;
  top: 18px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 5px;
  background: rgba(255, 255, 255, 0.8);
  border-radius: 99px;
  z-index: 2;
}
.page-products .products-hero__phone-screen {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
  border-radius: 30px;
}
.page-products .products-hero__corner {
  position: absolute;
  top: 12%;
  right: 14%;
  background: var(--fb-gold);
  color: var(--fb-carbon);
  font-family: var(--fb-mono);
  font-weight: 700;
  font-size: 0.8rem;
  padding: 5px 10px;
  border-radius: 2px;
  transform: rotate(4deg);
  z-index: 3;
}

/* 下载入口 */
.page-products .products-download {
  background: var(--fb-light);
  padding: 64px 0;
}
.page-products .products-download__head {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 32px;
}
.page-products .products-download__lead {
  max-width: 60ch;
  color: var(--fb-dark);
  line-height: 1.8;
  margin: 12px 0 0;
}
.page-products .products-download__inner {
  display: grid;
  gap: 32px;
  align-items: start;
}
.page-products .products-download__steps {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-products .products-download__steps li {
  display: flex;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid rgba(18, 18, 18, 0.1);
}
.page-products .products-download__steps li:first-child {
  border-top: 1px solid rgba(18, 18, 18, 0.1);
}
.page-products .products-download__step-num {
  flex: 0 0 42px;
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--fb-mono);
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--fb-orange);
  background: var(--fb-white);
  border: 1px solid rgba(255, 109, 0, 0.35);
  border-radius: 50%;
  box-shadow: 0 1px 3px rgba(18, 18, 18, 0.06);
}
.page-products .products-download__step-copy h3 {
  font-size: 1.05rem;
  margin: 0 0 6px;
  color: var(--fb-carbon);
}
.page-products .products-download__step-copy p {
  margin: 0;
  color: var(--fb-gray);
  font-size: 0.92rem;
  line-height: 1.7;
}
.page-products .products-download__action {
  background: var(--fb-carbon);
  border-radius: 10px;
  padding: 32px 24px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-products .products-download__action::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
  background: linear-gradient(90deg, var(--fb-orange), var(--fb-gold));
}
.page-products .products-download__btn {
  display: inline-block;
  background: var(--fb-orange);
  color: var(--fb-white);
  font-family: var(--fb-heading);
  font-size: 1.45rem;
  letter-spacing: 0.03em;
  padding: 16px 38px;
  border-radius: var(--fb-radius);
  transform: rotate(-2deg);
  box-shadow: 8px 8px 0 var(--fb-orange-dark);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  cursor: default;
}
.page-products .products-download__action:hover .products-download__btn {
  transform: rotate(-2deg) translateY(-4px);
  box-shadow: 8px 13px 0 var(--fb-orange-dark);
}
.page-products .products-download__note {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.85rem;
  line-height: 1.7;
  margin: 20px 0 0;
}
.page-products .products-download__help {
  display: inline-block;
  margin-top: 14px;
  color: var(--fb-gold);
  font-size: 0.9rem;
  text-decoration: none;
  border-bottom: 1px solid rgba(201, 162, 39, 0.5);
  padding-bottom: 2px;
}
.page-products .products-download__help:hover {
  color: var(--fb-white);
  border-color: var(--fb-white);
}

/* 核心功能 */
.page-products .products-features {
  padding: 64px 0;
}
.page-products .products-features__head {
  max-width: 640px;
  margin-bottom: 28px;
}
.page-products .products-features__intro {
  color: var(--fb-dark);
  line-height: 1.8;
  margin: 10px 0 0;
}
.page-products .products-features__grid {
  display: grid;
  gap: 16px;
  margin-bottom: 48px;
}
.page-products .products-features__card {
  background: var(--fb-white);
  border: 1px solid rgba(18, 18, 18, 0.08);
  border-left: 4px solid var(--fb-green);
  border-radius: 8px;
  box-shadow: var(--fb-shadow);
  padding: 20px 22px;
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}
.page-products .products-features__card--primary {
  border-left-color: var(--fb-orange);
}
.page-products .products-features__card:hover {
  box-shadow: 0 10px 22px rgba(18, 18, 18, 0.08);
}
.page-products .products-features__card summary {
  cursor: pointer;
  list-style: none;
  font-family: var(--fb-heading);
  font-size: 1.12rem;
  color: var(--fb-carbon);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.page-products .products-features__card summary::-webkit-details-marker {
  display: none;
}
.page-products .products-features__card summary::after {
  content: "+";
  font-family: var(--fb-mono);
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--fb-orange);
  line-height: 1;
}
.page-products .products-features__card[open] summary::after {
  content: "−";
}
.page-products .products-features__card p {
  margin: 14px 0 0;
  color: var(--fb-dark);
  font-size: 0.95rem;
  line-height: 1.8;
}
.page-products .products-features__media {
  display: grid;
  gap: 24px;
  align-items: center;
  background: var(--fb-carbon);
  border-radius: 12px;
  padding: 24px;
  color: var(--fb-white);
  overflow: hidden;
}
.page-products .products-features__media-frame {
  border: 3px solid var(--fb-white);
  border-radius: 8px;
  overflow: hidden;
  background: var(--fb-dark);
  transform: rotate(-2deg);
}
.page-products .products-features__media-frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-products .products-features__media-copy h3 {
  font-family: var(--fb-heading);
  font-size: 1.4rem;
  margin: 12px 0 10px;
  color: var(--fb-white);
}
.page-products .products-features__media-copy p {
  color: rgba(255, 255, 255, 0.72);
  line-height: 1.8;
  margin: 0;
}

/* 版本说明 */
.page-products .products-version {
  background: var(--fb-light);
  padding: 64px 0;
}
.page-products .products-version__head {
  max-width: 640px;
  margin-bottom: 20px;
}
.page-products .products-version__intro {
  color: var(--fb-dark);
  line-height: 1.8;
  margin: 10px 0 0;
}
.page-products .products-version__stats {
  display: grid;
  gap: 16px;
  margin: 36px 0 48px;
}
.page-products .products-version__stat {
  background: var(--fb-white);
  border: 1px solid rgba(18, 18, 18, 0.08);
  border-top: 4px solid var(--fb-gold);
  border-radius: 8px;
  padding: 28px 22px;
  box-shadow: var(--fb-shadow);
}
.page-products .products-version__stat-num {
  display: block;
  font-family: var(--fb-mono);
  font-size: clamp(2.4rem, 6vw, 3.6rem);
  font-weight: 700;
  line-height: 1;
  color: var(--fb-green);
}
.page-products .products-version__stat-label {
  display: inline-block;
  margin-top: 10px;
  font-family: var(--fb-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fb-orange);
}
.page-products .products-version__stat p {
  margin: 10px 0 0;
  color: var(--fb-dark);
  font-size: 0.9rem;
  line-height: 1.7;
}
.page-products .products-version__chart {
  display: grid;
  gap: 24px;
  align-items: center;
  margin-bottom: 48px;
}
.page-products .products-version__chart img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 10px;
  object-fit: cover;
  border: 1px solid rgba(18, 18, 18, 0.12);
  box-shadow: var(--fb-shadow);
}
.page-products .products-version__chart-copy h3 {
  font-family: var(--fb-heading);
  font-size: 1.35rem;
  margin: 0 0 10px;
  color: var(--fb-carbon);
}
.page-products .products-version__chart-copy p {
  color: var(--fb-dark);
  line-height: 1.8;
  margin: 0;
}
.page-products .products-version__history {
  display: grid;
  gap: 24px;
  align-items: center;
  background: var(--fb-carbon);
  border-radius: 12px;
  padding: 24px;
  color: var(--fb-white);
}
.page-products .products-version__history-copy h3 {
  font-family: var(--fb-heading);
  font-size: 1.35rem;
  margin: 12px 0 10px;
  color: var(--fb-white);
}
.page-products .products-version__history-copy p {
  color: rgba(255, 255, 255, 0.72);
  line-height: 1.8;
  margin: 0;
}
.page-products .products-version__history-media {
  border: 3px solid var(--fb-gold);
  border-radius: 8px;
  overflow: hidden;
}
.page-products .products-version__history-media img {
  display: block;
  width: 100%;
  height: auto;
}

/* 系统要求 */
.page-products .products-requirements {
  background: linear-gradient(125deg, #1B5E20 0%, #2E7D32 60%, #1B5E20 100%);
  color: var(--fb-white);
  padding: 64px 0;
  position: relative;
  overflow: hidden;
}
.page-products .products-requirements::before {
  content: "";
  position: absolute;
  right: -60px;
  top: -60px;
  width: 240px;
  height: 240px;
  border: 3px solid rgba(255, 109, 0, 0.35);
  border-radius: 50%;
  z-index: 0;
}
.page-products .products-requirements__grid {
  display: grid;
  gap: 32px;
  align-items: center;
  position: relative;
  z-index: 1;
}
.page-products .products-requirements__title {
  font-family: var(--fb-heading);
  font-size: clamp(1.6rem, 3vw, 2rem);
  margin: 0 0 18px;
  color: var(--fb-white);
}
.page-products .products-requirements__title::after {
  content: "";
  display: block;
  width: 56px;
  height: 4px;
  background: var(--fb-orange);
  margin-top: 14px;
}
.page-products .products-requirements__lead {
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.8;
  margin: 0 0 24px;
}
.page-products .products-requirements__list {
  list-style: none;
  margin: 0 0 28px;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-products .products-requirements__list li {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-left: 3px solid var(--fb-orange);
  border-radius: 6px;
  padding: 12px 16px;
  line-height: 1.6;
  font-size: 0.95rem;
}
.page-products .products-requirements__list li::before {
  content: "▶";
  color: var(--fb-orange);
  font-size: 0.7rem;
}
.page-products .products-requirements__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}
.page-products .products-requirements__back {
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.5);
  padding-bottom: 3px;
  font-size: 0.92rem;
}
.page-products .products-requirements__back:hover {
  color: var(--fb-white);
  border-color: var(--fb-white);
}
.page-products .products-requirements__visual {
  border-radius: 12px;
  overflow: hidden;
  border: 4px solid rgba(255, 255, 255, 0.55);
  transform: rotate(2deg);
  box-shadow: 14px 14px 0 rgba(0, 0, 0, 0.18);
}
.page-products .products-requirements__visual img {
  display: block;
  width: 100%;
  height: auto;
}

/* 断点：平板 */
@media (min-width: 760px) {
  .page-products .products-features__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .page-products .products-features__card:nth-child(odd) {
    transform: rotate(-0.6deg);
  }
  .page-products .products-features__card:nth-child(even) {
    transform: rotate(0.6deg);
  }
  .page-products .products-features__card:hover {
    transform: rotate(0deg) translateY(-4px);
  }
  .page-products .products-version__stats {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* 断点：桌面 */
@media (min-width: 860px) {
  .page-products .products-hero {
    padding-top: 28px;
  }
  .page-products .products-hero__grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 60px;
  }
  .page-products .products-hero__visual {
    order: 2;
  }
  .page-products .products-download__inner {
    grid-template-columns: 1.2fr 0.8fr;
  }
  .page-products .products-features__media {
    grid-template-columns: 1.1fr 0.9fr;
    padding: 28px;
  }
  .page-products .products-version__chart {
    grid-template-columns: 1.1fr 0.9fr;
    padding: 0 12px;
  }
  .page-products .products-version__history {
    grid-template-columns: 0.9fr 1.1fr;
    padding: 28px;
  }
  .page-products .products-requirements__grid {
    grid-template-columns: 1fr 1fr;
    gap: 56px;
  }
}