/* ============ 项目中心 / page-products ============ */

.page-products .proj-hero {
  position: relative;
  overflow: hidden;
  padding: 24px 0 54px;
  background: linear-gradient(180deg, rgba(220, 227, 232, .48) 0%, rgba(249, 246, 240, 0) 74%);
}

.page-products .proj-hero::before,
.page-products .proj-hero::after {
  content: "";
  position: absolute;
  pointer-events: none;
  border-radius: 22px;
}

.page-products .proj-hero::before {
  top: -20%;
  right: -8%;
  width: 44%;
  height: 152%;
  background: var(--green);
  opacity: .06;
  transform: rotate(-9deg);
}

.page-products .proj-hero::after {
  bottom: -44%;
  left: -9%;
  width: 34%;
  height: 98%;
  background: var(--copper);
  opacity: .09;
  transform: rotate(7deg);
}

.page-products .proj-hero__inner {
  position: relative;
  z-index: 1;
}

.page-products .proj-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(30px, 5.2vw, 50px);
  line-height: 1.18;
  letter-spacing: -.5px;
  color: var(--green-deep);
  max-width: 15em;
}

.page-products .proj-hero__lead {
  margin: 18px 0 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--brown);
}

.page-products .proj-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 30px;
}

.page-products .proj-jump__link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 15px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(220, 227, 232, .38);
  color: var(--green);
  font-size: 14px;
  text-decoration: none;
  transition: border-color .3s var(--ease), background .3s var(--ease), color .3s var(--ease), transform .3s var(--ease);
}

.page-products .proj-jump__link:hover,
.page-products .proj-jump__link:focus-visible {
  border-color: var(--line-copper);
  background: rgba(184, 134, 11, .1);
  color: var(--green-deep);
  transform: translateY(-2px);
}

.page-products .proj-jump__num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--copper);
}

/* ---------- 区块骨架 ---------- */

.page-products .proj-block {
  position: relative;
  padding: 52px 0;
}

.page-products .proj-block--tint {
  background: rgba(220, 227, 232, .26);
  box-shadow: inset 0 1px 0 var(--line), inset 0 -1px 0 var(--line);
}

.page-products .proj-head {
  max-width: 66ch;
}

.page-products .proj-head__title {
  margin: 12px 0 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(23px, 3.4vw, 34px);
  line-height: 1.3;
  letter-spacing: -.3px;
  color: var(--green-deep);
}

.page-products .proj-head__lead {
  margin: 14px 0 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--brown);
}

/* ---------- 规则指引 ---------- */

.page-products .rules-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  margin-top: 32px;
}

.page-products .rules-stack {
  display: flex;
  flex-direction: column;
  gap: 11px;
  min-width: 0;
}

.page-products .rules-stack .fold {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, .7);
  overflow: hidden;
  transition: border-color .3s var(--ease), box-shadow .3s var(--ease), background .3s var(--ease);
}

.page-products .rules-stack .fold:hover {
  border-color: var(--line-copper);
}

.page-products .rules-stack .fold[data-open="true"] {
  border-color: var(--line-copper);
  background: rgba(255, 255, 255, .92);
  box-shadow: var(--shadow-1);
}

.page-products .rules-stack .fold__trigger {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  padding: 15px 17px;
  border: 0;
  background: none;
  text-align: left;
  cursor: pointer;
  color: var(--green-deep);
}

.page-products .rules-stack .fold__index {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--copper);
}

.page-products .rules-stack__label {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 15.5px;
  line-height: 1.5;
}

.page-products .rules-stack .fold__icon {
  position: relative;
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin-left: auto;
}

.page-products .rules-stack .fold__icon::before,
.page-products .rules-stack .fold__icon::after {
  content: "";
  position: absolute;
  background: var(--copper);
  transition: transform .32s var(--ease), opacity .32s var(--ease);
}

.page-products .rules-stack .fold__icon::before {
  top: 50%;
  left: 0;
  width: 100%;
  height: 1.5px;
  transform: translateY(-50%);
}

.page-products .rules-stack .fold__icon::after {
  left: 50%;
  top: 0;
  width: 1.5px;
  height: 100%;
  transform: translateX(-50%);
}

.page-products .rules-stack .fold[data-open="true"] .fold__icon::after {
  transform: translateX(-50%) scaleY(0);
  opacity: 0;
}

.page-products .rules-stack .fold__content {
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--brown);
}

.page-products .rules-stack .fold__content > * + * {
  margin-top: 9px;
}

.page-products .rules-stack .fold__content p {
  margin: 0;
}

.page-products .rules-figure,
.page-products .version-figure,
.page-products .rank-figure,
.page-products .help-figure,
.page-products .review-figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--cream-2);
  box-shadow: var(--shadow-1);
}

.page-products .rules-figure img,
.page-products .version-figure img,
.page-products .rank-figure img,
.page-products .help-figure img,
.page-products .review-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-products .rules-figure figcaption,
.page-products .version-figure figcaption,
.page-products .rank-figure figcaption,
.page-products .help-figure figcaption,
.page-products .review-figure figcaption {
  padding: 12px 16px 14px;
  border-top: 1px solid var(--line);
  background: rgba(255, 255, 255, .62);
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate);
}

/* ---------- 栏目评测 ---------- */

.page-products .review-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  align-items: center;
}

.page-products .review-copy {
  min-width: 0;
}

.page-products .review-list {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-products .review-list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--brown);
}

.page-products .review-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  background: var(--copper);
  transform: rotate(45deg);
}

.page-products .review-list strong {
  color: var(--green-deep);
  font-weight: 700;
}

/* ---------- 双版本对照 ---------- */

.page-products .version-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 30px;
}

.page-products .version-col {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, .68);
  padding: 24px 20px 28px;
  min-width: 0;
}

.page-products .version-col::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  right: -1px;
  height: 3px;
  background: var(--copper);
  border-radius: var(--radius) var(--radius) 0 0;
}

.page-products .version-col--fast::before {
  background: var(--green);
}

.page-products .version-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 12px;
}

.page-products .version-tag {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  padding: 5px 10px;
  border-radius: 999px;
  border: 1px solid var(--line-copper);
  background: rgba(184, 134, 11, .13);
  color: var(--copper);
}

.page-products .version-col--fast .version-tag {
  border-color: rgba(44, 74, 62, .32);
  background: rgba(44, 74, 62, .1);
  color: var(--green);
}

.page-products .version-name {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 19px;
  line-height: 1.4;
  color: var(--green-deep);
}

.page-products .version-list {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-products .version-list li {
  position: relative;
  padding-left: 24px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--brown);
}

.page-products .version-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 12px;
  height: 12px;
  border: 1.5px solid var(--copper);
  border-radius: 3px;
}

.page-products .version-col--fast .version-list li::before {
  border-color: var(--green);
}

.page-products .version-figure,
.page-products .rank-figure {
  margin-top: 28px;
}

/* ---------- 帮助文档 ---------- */

.page-products .help-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  margin-top: 30px;
  align-items: start;
}

.page-products .steps {
  margin: 0;
  padding: 0;
  list-style: none;
  min-width: 0;
}

.page-products .step {
  position: relative;
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 16px;
  padding-bottom: 26px;
}

.page-products .step:last-child {
  padding-bottom: 0;
}

.page-products .step:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 23px;
  top: 54px;
  bottom: 4px;
  width: 1px;
  background: linear-gradient(180deg, var(--line-copper), rgba(184, 134, 11, .08));
}

.page-products .step__num {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  border: 1px solid var(--line-copper);
  background: rgba(184, 134, 11, .09);
  font-family: var(--font-mono);
  font-size: 17px;
  color: var(--copper);
}

.page-products .step--key .step__num {
  border-color: var(--vermilion);
  background: var(--vermilion);
  color: var(--cream);
  box-shadow: 0 0 0 5px rgba(199, 62, 54, .14);
}

.page-products .step__body {
  padding-top: 2px;
}

.page-products .step__body h3 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.5;
  color: var(--green-deep);
}

.page-products .step--key .step__body h3 {
  color: var(--vermilion);
}

.page-products .step__body p {
  margin: 8px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--brown);
}

/* ---------- 段位体系 ---------- */

.page-products .rank-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(88px, 1fr));
  gap: 10px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.page-products .rank {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 9px;
  padding: 18px 6px 15px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: linear-gradient(180deg, rgba(255, 255, 255, .9), rgba(220, 227, 232, .32));
  text-align: center;
  transition: border-color .3s var(--ease), transform .3s var(--ease);
}

.page-products .rank:hover {
  border-color: var(--line-copper);
  transform: translateY(-3px);
}

.page-products .rank__num {
  font-family: var(--font-mono);
  font-size: 18px;
  letter-spacing: .04em;
  color: var(--copper);
}

.page-products .rank__name {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 14px;
  color: var(--green-deep);
}

.page-products .rank--top {
  border-color: var(--line-copper);
  background: linear-gradient(180deg, rgba(184, 134, 11, .18), rgba(255, 255, 255, .72));
}

.page-products .rank--top .rank__num {
  color: var(--vermilion);
}

/* ---------- 收尾联系 ---------- */

.page-products .proj-cta {
  position: relative;
  overflow: hidden;
  margin-top: 8px;
  padding: 50px 0;
  background: var(--green-deep);
}

.page-products .proj-cta::after {
  content: "";
  position: absolute;
  top: -62%;
  right: -12%;
  width: 44%;
  height: 210%;
  background: var(--copper);
  opacity: .12;
  transform: rotate(-14deg);
  pointer-events: none;
}

.page-products .proj-cta__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 22px;
}

.page-products .proj-cta h2 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(21px, 3.2vw, 30px);
  line-height: 1.35;
  letter-spacing: -.3px;
  color: var(--cream);
}

.page-products .proj-cta p {
  margin: 12px 0 0;
  max-width: 54ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(249, 246, 240, .78);
}

.page-products .proj-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-products .proj-cta .btn--outline {
  border-color: rgba(249, 246, 240, .42);
  color: var(--cream);
}

.page-products .proj-cta .btn--outline:hover,
.page-products .proj-cta .btn--outline:focus-visible {
  border-color: var(--copper-lt);
  color: var(--copper-lt);
}

/* ---------- 断点 ---------- */

@media (min-width: 640px) {
  .page-products .proj-hero {
    padding: 30px 0 64px;
  }

  .page-products .proj-block {
    padding: 62px 0;
  }

  .page-products .version-split {
    gap: 18px;
  }

  .page-products .version-col {
    padding: 28px 26px 32px;
  }
}

@media (min-width: 900px) {
  .page-products .rules-grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: 40px;
    align-items: start;
  }

  .page-products .rules-figure {
    position: sticky;
    top: 96px;
  }

  .page-products .review-split {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 1fr);
    gap: 48px;
  }

  .page-products .help-split {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    gap: 48px;
  }

  .page-products .version-split {
    grid-template-columns: 1fr 1fr;
    gap: 0;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
    background: rgba(255, 255, 255, .55);
  }

  .page-products .version-col {
    border: 0;
    border-radius: 0;
    background: transparent;
    padding: 34px 32px 38px;
  }

  .page-products .version-col::before {
    display: none;
  }

  .page-products .version-col--fast {
    border-left: 1px solid var(--line);
    background: rgba(44, 74, 62, .05);
  }

  .page-products .version-head {
    display: block;
  }

  .page-products .version-tag {
    display: inline-block;
    margin-bottom: 10px;
  }

  .page-products .proj-cta__inner {
    grid-template-columns: minmax(0, 1.55fr) auto;
    align-items: center;
    gap: 40px;
  }

  .page-products .proj-cta__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 1180px) {
  .page-products .proj-jump {
    gap: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .proj-jump__link,
  .page-products .rank,
  .page-products .rules-stack .fold,
  .page-products .rules-stack .fold__icon::before,
  .page-products .rules-stack .fold__icon::after {
    transition: none;
  }

  .page-products .proj-jump__link:hover,
  .page-products .rank:hover {
    transform: none;
  }
}