/* ===== 使用工具页 · page-products ===== */
.page-products .breadcrumb {
  padding-top: 22px;
  font-size: var(--fs-2);
}

.page-products .pp-hero {
  padding: 26px 0 52px;
}

.page-products .pp-hero__grid {
  display: grid;
  gap: 34px;
}

.page-products .pp-hero h1 {
  margin: 14px 0 20px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 5.2vw, 56px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-products .pp-hero__lede {
  margin: 0 0 20px;
  padding-left: 20px;
  border-left: 3px solid var(--orange);
  font-family: var(--font-serif);
  font-size: var(--fs-4);
  line-height: 1.65;
  color: var(--ink);
  max-width: 34ch;
}

.page-products .pp-hero__text {
  margin: 0;
  max-width: 62ch;
  font-size: var(--fs-3);
  line-height: 1.8;
  color: var(--ink-dim);
}

.page-products .pp-vercard {
  border: 2px solid var(--line);
  background: var(--bg-channel);
  box-shadow: var(--shadow-hard);
  padding: 20px 22px 16px;
}

.page-products .pp-vercard__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: var(--fs-1);
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-products .pp-vercard__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin: 0;
  padding: 9px 0;
  border-top: 1px solid var(--line-soft);
  font-size: var(--fs-2);
  color: var(--ink-dim);
}

.page-products .pp-vercard__row b {
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--ink);
}

.page-products .pp-vercard__live {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--green);
}

.page-products .pp-section {
  padding: 54px 0;
}

.page-products .pp-section--tight {
  padding: 40px 0 72px;
}

.page-products .pp-section--channel {
  background: var(--bg-channel);
  border-top: 2px solid var(--line);
  border-bottom: 2px solid var(--line);
}

.page-products .pp-head {
  margin-bottom: 30px;
}

.page-products .pp-head__tag {
  display: inline-block;
  margin: 0 0 14px;
  padding: 4px 10px;
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: var(--fs-1);
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-products .pp-head h2 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 3.6vw, 44px);
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-products .pp-head p {
  margin: 0;
  max-width: 62ch;
  font-size: var(--fs-3);
  line-height: 1.8;
  color: var(--ink-dim);
}

/* 总览 */
.page-products .pp-overview {
  display: grid;
  gap: 32px;
}

.page-products .pp-overview__cols {
  display: grid;
  gap: 28px;
}

.page-products .pp-figure {
  margin: 0;
}

.page-products .figure__frame {
  border: 2px solid var(--line);
  background: var(--bg-deep);
  overflow: hidden;
}

.page-products .figure__frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-products .figure__cap {
  margin-top: 10px;
  font-size: var(--fs-1);
  line-height: 1.6;
  color: var(--ink-dim);
}

.page-products .list-index__item {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 16px;
  padding: 14px 0;
  border-top: 1px solid var(--line-soft);
}

.page-products .list-index__item:last-child {
  border-bottom: 1px solid var(--line-soft);
}

.page-products .list-index__num {
  font-family: var(--font-mono);
  font-size: var(--fs-2);
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--orange);
}

.page-products .list-index__text {
  display: block;
  font-size: var(--fs-3);
  line-height: 1.6;
  color: var(--ink);
}

.page-products .list-index__text em {
  display: block;
  margin-top: 5px;
  font-style: normal;
  font-size: var(--fs-2);
  line-height: 1.7;
  color: var(--ink-dim);
}

.page-products .pp-overview__side {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-products .pp-note {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-1);
  letter-spacing: 0.04em;
  line-height: 1.8;
  color: var(--ink-dim);
  border-top: 1px dashed var(--line);
  padding-top: 10px;
}

.page-products .pp-note a,
.page-products .pp-step__done a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* 步骤通道 */
.page-products .pp-steps-head {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 26px;
}

.page-products .pp-steps-count {
  flex: none;
  font-size: var(--fs-2);
  letter-spacing: 0.08em;
  color: var(--ink-dim);
}

.page-products .pp-railbar {
  flex: 1;
  height: 2px;
  background: var(--line);
  overflow: hidden;
}

.page-products .pp-railbar i {
  display: block;
  height: 100%;
  background: var(--orange);
  transform: scaleX(1);
  transform-origin: left center;
  transition: transform 120ms linear;
}

.page-products .pp-step {
  display: grid;
  gap: 20px;
  padding: 22px;
  border: 2px solid var(--line);
  background: var(--bg);
  transition: border-color 180ms ease, box-shadow 180ms ease;
}

.page-products .pp-step + .pp-step {
  margin-top: 20px;
}

.page-products .pp-step__rail {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.page-products .pp-step__num {
  font-family: var(--font-mono);
  font-size: var(--fs-6);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--orange);
}

.page-products .pp-step__of {
  font-family: var(--font-mono);
  font-size: var(--fs-2);
  letter-spacing: 0.08em;
  color: var(--ink-dim);
}

.page-products .pp-step__body {
  min-width: 0;
}

.page-products .pp-step__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--fs-4);
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-products .pp-step__lead {
  margin: 0 0 16px;
  max-width: 58ch;
  font-size: var(--fs-3);
  line-height: 1.8;
  color: var(--ink-dim);
}

.page-products .pp-step__more {
  border-top: 1px solid var(--line-soft);
  padding-top: 2px;
}

.page-products .pp-step__more > summary {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 0;
  list-style: none;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: var(--fs-2);
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-products .pp-step__more > summary::-webkit-details-marker {
  display: none;
}

.page-products .pp-step__more > summary::before {
  content: "+";
  font-family: var(--font-mono);
  font-size: var(--fs-4);
  line-height: 1;
  color: var(--orange);
}

.page-products .pp-step__more[open] > summary::before {
  content: "–";
}

.page-products .pp-step__list {
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-products .pp-step__list li {
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr);
  gap: 12px;
  font-size: var(--fs-3);
  line-height: 1.78;
  color: var(--ink);
}

.page-products .pp-step__list li::before {
  content: "";
  width: 9px;
  height: 9px;
  margin-top: 11px;
  border: 2px solid var(--cyan);
  box-sizing: border-box;
}

.page-products .pp-step__more p {
  margin: 0 0 16px;
  font-size: var(--fs-2);
  line-height: 1.75;
  color: var(--ink-dim);
}

.page-products .pp-step__done {
  margin: 0;
  padding: 4px 0 4px 14px;
  border-left: 3px solid var(--green);
  font-size: var(--fs-2);
  line-height: 1.75;
  color: var(--ink-dim);
}

.page-products .pp-step__done b {
  font-weight: 700;
  color: var(--green);
}

.page-products .pp-step__aside {
  display: grid;
  gap: 14px;
  align-content: start;
}

/* 中断处理 */
.page-products .pp-faults {
  display: grid;
  gap: 12px;
  margin-bottom: 18px;
}

.page-products .pp-fault {
  border: 2px solid var(--line);
  background: var(--bg-deep);
}

.page-products .pp-fault > summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  padding: 15px 16px;
  list-style: none;
  cursor: pointer;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--fs-3);
  color: var(--ink);
}

.page-products .pp-fault > summary::-webkit-details-marker {
  display: none;
}

.page-products .pp-fault__tag {
  font-family: var(--font-mono);
  font-size: var(--fs-1);
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--red);
}

.page-products .pp-fault__x {
  font-family: var(--font-mono);
  font-size: var(--fs-4);
  line-height: 1;
  color: var(--ink-dim);
}

.page-products .pp-fault[open] > summary {
  border-bottom: 1px solid var(--line-soft);
}

.page-products .pp-fault[open] > summary .pp-fault__x {
  color: var(--orange);
}

.page-products .pp-fault__body {
  display: grid;
  gap: 12px;
  padding: 16px 16px 20px;
}

.page-products .pp-fault__step {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 12px;
  margin: 0;
  font-size: var(--fs-2);
  line-height: 1.78;
  color: var(--ink);
}

.page-products .pp-fault__step span:first-child {
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

/* 自检清单 */
.page-products .pp-check {
  margin-top: 34px;
  border: 2px solid var(--line);
  background: var(--bg-deep);
}

.page-products .pp-check__row + .pp-check__row {
  border-top: 1px solid var(--line-soft);
}

.page-products .pp-check__label {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 15px 18px;
  cursor: pointer;
  transition: background 160ms ease;
}

.page-products .pp-check__row:hover {
  background: rgba(18, 48, 73, 0.5);
}

.page-products .pp-check__row:has(input:checked) {
  background: var(--bg-grid);
}

.page-products .pp-check__box {
  appearance: none;
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  margin: 3px 0 0;
  border: 2px solid var(--line);
  background: var(--bg);
  position: relative;
  cursor: pointer;
}

.page-products .pp-check__box:checked {
  border-color: var(--green);
}

.page-products .pp-check__box:checked::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 0;
  width: 6px;
  height: 12px;
  border-right: 2px solid var(--green);
  border-bottom: 2px solid var(--green);
  transform: rotate(42deg);
}

.page-products .pp-check__text {
  font-size: var(--fs-3);
  line-height: 1.7;
  color: var(--ink);
}

.page-products .pp-check__text b {
  margin-right: 10px;
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--ink-dim);
}

/* 版本记录 */
.page-products .pp-log {
  display: grid;
  border: 2px solid var(--line);
  background: var(--bg-deep);
}

.page-products .pp-log__row {
  display: grid;
  gap: 6px;
  padding: 18px 20px;
  border-top: 1px solid var(--line-soft);
}

.page-products .pp-log__row:first-child {
  border-top: 0;
}

.page-products .pp-log__key {
  font-family: var(--font-mono);
  font-size: var(--fs-2);
  letter-spacing: 0.06em;
  color: var(--orange);
}

.page-products .pp-log__val {
  font-size: var(--fs-3);
  line-height: 1.8;
  color: var(--ink);
}

.page-products .pp-log__val em {
  display: block;
  margin-top: 5px;
  font-style: normal;
  font-size: var(--fs-2);
  color: var(--ink-dim);
}

.page-products .pp-log + .pp-note {
  margin-top: 24px;
}

/* 收尾 */
.page-products .pp-cta {
  display: grid;
  gap: 20px;
  padding: 28px 24px;
  border: 2px solid var(--orange);
  background: var(--bg-channel);
  box-shadow: var(--shadow-hard);
}

.page-products .pp-cta h2 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-4);
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-products .pp-cta p {
  margin: 0;
  max-width: 56ch;
  font-size: var(--fs-3);
  line-height: 1.75;
  color: var(--ink-dim);
}

.page-products .pp-cta__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* 500px 以上 */
@media (min-width: 500px) {
  .page-products .pp-hero {
    padding-top: 34px;
  }

  .page-products .pp-step {
    padding: 26px;
  }
}

/* 760px 以上 */
@media (min-width: 760px) {
  .page-products .pp-section {
    padding: 68px 0;
  }

  .page-products .pp-log__row {
    grid-template-columns: 130px minmax(0, 1fr);
    gap: 24px;
    align-items: start;
  }

  .page-products .pp-cta {
    padding: 32px 30px;
  }
}

/* 900px 以上 */
@media (min-width: 900px) {
  .page-products .pp-overview__cols {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 56px;
  }

  .page-products .pp-step {
    grid-template-columns: 66px minmax(0, 1fr) minmax(0, 300px);
    gap: 32px;
    padding: 32px 28px;
  }

  .page-products .pp-step--faults {
    grid-template-columns: 66px minmax(0, 1fr);
  }

  .page-products .pp-step__rail {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .page-products .pp-step__aside {
    border-left: 1px solid var(--line-soft);
    padding-left: 26px;
  }

  .page-products .pp-step:hover {
    border-color: var(--orange-soft);
    box-shadow: 6px 6px 0 0 var(--bg-deep);
  }

  .page-products .pp-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 40px;
    padding: 36px 34px;
  }

  .page-products .pp-cta__acts {
    flex-wrap: nowrap;
  }
}

/* 980px 以上 */
@media (min-width: 980px) {
  .page-products .pp-hero {
    padding: 40px 0 66px;
  }

  .page-products .pp-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 64px;
    align-items: start;
  }
}