.page-products {
  --pp-cut: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
  overflow-x: clip;
  padding-bottom: clamp(40px, 7vw, 76px);
}

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

.page-products a:focus-visible,
.page-products summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

/* ---------- 首屏 ---------- */
.page-products .pp-hero {
  display: grid;
  gap: 16px;
  padding-block: clamp(24px, 4.5vw, 50px) clamp(8px, 2vw, 18px);
  max-width: 940px;
}

.page-products .pp-hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(31px, 6.2vw, 60px);
  line-height: 1.07;
  letter-spacing: 0.015em;
  color: var(--text);
}

.page-products .pp-hero .lede {
  margin: 0;
  max-width: 62ch;
  color: var(--muted);
  font-size: clamp(15px, 1.6vw, 16.5px);
  line-height: 1.85;
}

.page-products .pp-hero__facts {
  list-style: none;
  margin: 6px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px 18px;
}

.page-products .pp-hero__facts li {
  display: grid;
  gap: 3px;
  border-left: 2px solid var(--cyan);
  padding-left: 12px;
}

.page-products .pp-hero__facts .num {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 26px;
  line-height: 1;
  color: var(--cyan);
}

.page-products .pp-hero__facts li span:last-child {
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

/* ---------- 区块节奏 ---------- */
.page-products .pp-block {
  padding-block: clamp(42px, 7vw, 86px);
}

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

.page-products .pp-head {
  display: grid;
  gap: 12px;
  max-width: 780px;
  margin-bottom: clamp(22px, 3.4vw, 38px);
}

.page-products .pp-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 4vw, 38px);
  line-height: 1.16;
  letter-spacing: 0.01em;
  color: var(--text);
}

.page-products .pp-head p {
  margin: 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.82;
  color: var(--muted);
}

/* ---------- 取包面板 ---------- */
.page-products .pp-grab__panel {
  position: relative;
  display: grid;
  gap: clamp(18px, 3vw, 34px);
  padding: clamp(20px, 3.6vw, 42px);
  background:
    radial-gradient(120% 130% at 0% 0%, rgba(0, 229, 255, 0.13), transparent 58%),
    var(--ink-1);
  border: 1px solid var(--line);
  border-top-color: rgba(0, 229, 255, 0.5);
  clip-path: var(--pp-cut);
}

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

.page-products .pp-grab__body h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(23px, 3.4vw, 34px);
  line-height: 1.2;
  letter-spacing: 0.01em;
  color: var(--text);
}

.page-products .pp-grab__note {
  margin: 0;
  max-width: 58ch;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--muted);
}

.page-products .pp-grab__spec {
  margin: 4px 0 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-products .pp-grab__spec > div {
  display: grid;
  gap: 5px;
  padding: 12px 14px;
  background: var(--ink-0);
}

.page-products .pp-grab__spec dt {
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.page-products .pp-grab__spec dd {
  margin: 0;
}

.page-products .pp-ver {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 15px;
  letter-spacing: 0.045em;
  color: var(--cyan-soft);
}

.page-products .pp-grab__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 4px;
}

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

/* ---------- 形态对照 ---------- */
.page-products .pp-forms {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-products .pp-form {
  position: relative;
  display: grid;
  gap: 8px;
  align-content: start;
  padding: clamp(16px, 2.4vw, 24px);
  background: var(--ink-1);
  transition: background var(--speed) ease;
}

.page-products .pp-form::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 3px;
  height: 100%;
  background: var(--cyan);
  transform: scaleY(0.26);
  transform-origin: top;
  transition: transform var(--speed) ease;
}

.page-products .pp-form:hover {
  background: #141827;
}

.page-products .pp-form:hover::after {
  transform: scaleY(1);
}

.page-products .pp-form__idx {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-products .pp-form__name {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--text);
}

.page-products .pp-form__desc {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

.page-products .pp-form__size {
  padding-top: 9px;
  border-top: 1px dashed var(--line);
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: var(--cyan-soft);
}

.page-products .pp-forms__figure {
  margin: clamp(22px, 3.4vw, 36px) 0 0;
}

/* ---------- 在运版本线 ---------- */
.page-products .pp-rail {
  display: flex;
  gap: 14px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 4px var(--gutter) 20px;
  scrollbar-width: thin;
  scrollbar-color: var(--cyan) var(--line);
  -webkit-overflow-scrolling: touch;
}

.page-products .pp-rail::-webkit-scrollbar {
  height: 6px;
}

.page-products .pp-rail::-webkit-scrollbar-track {
  background: var(--line);
}

.page-products .pp-rail::-webkit-scrollbar-thumb {
  background: var(--cyan);
}

.page-products .pp-rail__item {
  scroll-snap-align: start;
  flex: 0 0 min(78vw, 300px);
  display: grid;
  gap: 10px;
  align-content: start;
  padding: 18px;
  background: var(--ink-1);
  border: 1px solid var(--line);
  border-top: 2px solid var(--cyan);
}

.page-products .pp-rail__kicker {
  margin: 0;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-products .pp-rail__title {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
}

.page-products .pp-rail__desc {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.78;
  color: var(--muted);
}

.page-products .pp-rail__meta {
  margin: 0;
  padding-top: 10px;
  border-top: 1px dashed var(--line);
}

.page-products .pp-lines__figure {
  margin: clamp(20px, 3vw, 32px) 0 0;
}

/* ---------- 三步确认 ---------- */
.page-products .pp-check__grid {
  display: grid;
  gap: clamp(22px, 3.6vw, 44px);
}

.page-products .pp-check__grid h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3.6vw, 36px);
  line-height: 1.18;
  color: var(--text);
}

.page-products .pp-steps {
  list-style: none;
  counter-reset: pp-step;
  margin: clamp(18px, 3vw, 28px) 0 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-products .pp-step {
  position: relative;
  padding-left: 58px;
}

.page-products .pp-step::before {
  counter-increment: pp-step;
  content: "0" counter(pp-step);
  position: absolute;
  left: 0;
  top: 0;
  width: 42px;
  height: 34px;
  display: grid;
  place-items: center;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 20px;
  line-height: 1;
  color: var(--ink-0);
  background: var(--cyan);
  clip-path: polygon(0 0, 100% 0, 100% 74%, 82% 100%, 0 100%);
}

.page-products .pp-step h3 {
  margin: 4px 0 6px;
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
}

.page-products .pp-step p {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--muted);
}

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

/* ---------- 旧版对应 ---------- */
.page-products .pp-legacy__panel {
  display: grid;
  gap: 14px;
  max-width: 980px;
  padding: clamp(20px, 3.4vw, 40px);
  background:
    linear-gradient(180deg, rgba(255, 209, 102, 0.08), transparent 62%),
    var(--ink-1);
  border: 1px solid var(--line);
  border-left: 3px solid var(--amber);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}

.page-products .pp-legacy__panel h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 3.2vw, 32px);
  line-height: 1.2;
  color: var(--text);
}

.page-products .pp-legacy__panel > p {
  margin: 0;
  max-width: 66ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--muted);
}

.page-products .pp-legacy__list {
  list-style: none;
  margin: 0;
  padding: 14px 0 0;
  border-top: 1px dashed var(--line);
  display: grid;
  gap: 10px;
}

.page-products .pp-legacy__list li {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: baseline;
  font-size: 14px;
  line-height: 1.72;
  color: var(--text);
}

.page-products .pp-legacy__panel .btn {
  justify-self: start;
  margin-top: 4px;
}

/* ---------- 问答 ---------- */
.page-products .pp-faq {
  border-top: 1px solid var(--line);
}

.page-products .pp-faq details {
  border-bottom: 1px solid var(--line);
}

.page-products .pp-faq summary {
  position: relative;
  list-style: none;
  cursor: pointer;
  padding: 18px 44px 18px 0;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--text);
  transition: color var(--speed) ease;
}

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

.page-products .pp-faq summary::after {
  content: "+";
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-num);
  font-size: 20px;
  line-height: 1;
  color: var(--cyan);
}

.page-products .pp-faq details[open] summary::after {
  content: "—";
}

.page-products .pp-faq summary:hover {
  color: var(--cyan-soft);
}

.page-products .pp-faq details > p {
  margin: 0;
  padding: 0 30px 20px 0;
  max-width: 74ch;
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--muted);
}

.page-products .pp-faq__figure {
  margin: clamp(24px, 3.6vw, 40px) 0 0;
}

/* ---------- 收尾行动 ---------- */
.page-products .pp-next__inner {
  display: grid;
  gap: 18px;
  align-items: center;
}

.page-products .pp-next h2 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.2;
  color: var(--text);
}

.page-products .pp-next p {
  margin: 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--muted);
}

.page-products .pp-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-products .pp-forms {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-products .pp-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-products .pp-rail__item {
    flex-basis: 320px;
  }
}

@media (min-width: 940px) {
  .page-products .pp-check__grid {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: start;
  }

  .page-products .pp-next__inner {
    grid-template-columns: 1fr auto;
    gap: 32px;
  }
}

@media (min-width: 980px) {
  .page-products .pp-grab__panel {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: center;
  }
}

@media (min-width: 1000px) {
  .page-products .pp-forms {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1260px) {
  .page-products .pp-rail {
    padding-inline: calc((100% - var(--shell)) / 2);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pp-rail {
    scroll-snap-type: none;
    scroll-behavior: auto;
  }

  .page-products .pp-form,
  .page-products .pp-form::after,
  .page-products .pp-faq summary {
    transition: none;
  }
}