:root {
  color-scheme: dark;
  --pc-bg: #0b1020;
  --pc-bg-2: #111933;
  --pc-surface: rgba(18, 27, 49, 0.76);
  --pc-surface-2: rgba(10, 16, 33, 0.84);
  --pc-border: rgba(162, 181, 225, 0.14);
  --pc-text: #ecf2ff;
  --pc-muted: #9aa9cc;
  --pc-accent: #6fe3ff;
  --pc-accent-2: #9c8dff;
  --pc-accent-3: #63ffa8;
  --pc-shadow: 0 26px 90px rgba(0, 0, 0, 0.38);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body.pc-page {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at 12% 10%, rgba(111, 227, 255, 0.14), transparent 22%),
    radial-gradient(circle at 86% 14%, rgba(156, 141, 255, 0.15), transparent 28%),
    linear-gradient(180deg, var(--pc-bg), var(--pc-bg-2));
  color: var(--pc-text);
  min-height: 100vh;
}

a {
  color: inherit;
  text-decoration: none;
}

.pc-skip {
  position: absolute;
  left: 1rem;
  top: -3rem;
  z-index: 20;
  padding: 0.75rem 1rem;
  border-radius: 999px;
  background: #fff;
  color: #111;
  transition: top 0.2s ease;
}

.pc-skip:focus {
  top: 1rem;
}

.pc-header {
  position: sticky;
  top: 0;
  z-index: 15;
  background: rgba(11, 16, 32, 0.7);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(162, 181, 225, 0.1);
}

.pc-header-inner {
  width: min(1200px, calc(100% - 2rem));
  min-height: 4.75rem;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.pc-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
}

.pc-logo {
  width: 2.9rem;
  aspect-ratio: 1;
  border-radius: 1rem;
  background: linear-gradient(145deg, rgba(111, 227, 255, 0.28), rgba(156, 141, 255, 0.18));
  border: 1px solid rgba(162, 181, 225, 0.18);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.04);
  position: relative;
}

.pc-logo span:first-child {
  position: absolute;
  inset: 0.6rem 0.55rem auto auto;
  width: 1rem;
  height: 1rem;
  border-radius: 50%;
  background: var(--pc-accent);
  box-shadow: 0 0 0 0.35rem rgba(111, 227, 255, 0.14);
}

.pc-logo span:last-child {
  position: absolute;
  left: 0.65rem;
  bottom: 0.6rem;
  width: 1.15rem;
  height: 0.28rem;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--pc-accent-2), var(--pc-accent));
}

.pc-brand strong {
  display: block;
  font-size: 1rem;
}

.pc-brand small {
  display: block;
  color: var(--pc-muted);
}

.pc-nav {
  display: flex;
  align-items: center;
  gap: 1.15rem;
}

.pc-nav a {
  color: var(--pc-muted);
  font-size: 0.95rem;
}

.pc-menu {
  display: none;
  width: 3rem;
  height: 3rem;
  border: 1px solid var(--pc-border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  align-items: center;
  justify-content: center;
  gap: 0.22rem;
  flex-direction: column;
}

.pc-menu span {
  width: 1rem;
  height: 1.5px;
  border-radius: 999px;
  background: #fff;
}

.pc-hero,
.pc-platforms,
.pc-system,
.pc-matrix,
.pc-issues,
.pc-faq,
.pc-footer {
  width: min(1200px, calc(100% - 2rem));
  margin: 0 auto;
}

.pc-hero {
  display: grid;
  grid-template-columns: minmax(0, 0.98fr) minmax(340px, 1.02fr);
  gap: 2rem;
  align-items: center;
  padding: 4.2rem 0 2rem;
}

.pc-eyebrow,
.pc-section-kicker {
  margin: 0 0 0.8rem;
  font-size: 0.8rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--pc-muted);
}

.pc-hero h1 {
  margin: 0;
  font-size: clamp(2.8rem, 6vw, 5.4rem);
  line-height: 0.96;
  letter-spacing: -0.07em;
}

.pc-hero h1 span {
  display: block;
}

.pc-lead {
  margin: 1.35rem 0 0;
  max-width: 38rem;
  color: var(--pc-muted);
  line-height: 1.88;
  font-size: 1.03rem;
}

.pc-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 1.6rem;
}

.pc-cta {
  min-height: 3.25rem;
  padding: 0.8rem 1.25rem;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  border: 1px solid transparent;
  font-weight: 700;
}

.pc-cta-primary {
  background: linear-gradient(135deg, #eff6ff, #bcd1ff);
  color: #081022;
  box-shadow: 0 20px 36px rgba(111, 146, 223, 0.18);
}

.pc-cta-secondary {
  border-color: rgba(162, 181, 225, 0.2);
  background: rgba(255, 255, 255, 0.04);
}

.pc-device-hint {
  margin-top: 1rem;
  color: var(--pc-muted);
}

.pc-workbench {
  padding: 1.35rem;
  border-radius: 2rem;
  background:
    linear-gradient(180deg, rgba(13, 18, 37, 0.96), rgba(9, 14, 29, 0.96)),
    radial-gradient(circle at top, rgba(111, 227, 255, 0.16), transparent 35%);
  border: 1px solid rgba(162, 181, 225, 0.12);
  box-shadow: var(--pc-shadow);
}

.pc-monitor {
  border-radius: 1.6rem;
  background: linear-gradient(180deg, rgba(21, 30, 54, 0.98), rgba(11, 16, 32, 0.98));
  border: 1px solid rgba(162, 181, 225, 0.12);
  overflow: hidden;
}

.pc-window-bar {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.95rem 1rem;
  border-bottom: 1px solid rgba(162, 181, 225, 0.08);
}

.pc-window-bar span {
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.24);
}

.pc-window-bar strong {
  margin-left: auto;
  color: var(--pc-muted);
  font-size: 0.82rem;
  letter-spacing: 0.14em;
}

.pc-screen {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(250px, 0.92fr);
  gap: 1.2rem;
  padding: 1.2rem;
}

.pc-screen-left {
  min-height: 320px;
  border-radius: 1.25rem;
  padding: 1.25rem;
  background:
    radial-gradient(circle at 20% 20%, rgba(111, 227, 255, 0.18), transparent 24%),
    linear-gradient(160deg, rgba(17, 24, 45, 0.95), rgba(13, 19, 36, 0.96));
  border: 1px solid rgba(162, 181, 225, 0.1);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.pc-screen-tag {
  display: inline-flex;
  width: fit-content;
  padding: 0.34rem 0.7rem;
  border-radius: 999px;
  background: rgba(111, 227, 255, 0.14);
  color: var(--pc-accent);
  font-size: 0.8rem;
}

.pc-screen-left h2 {
  margin: 0.8rem 0 0;
  font-size: clamp(1.6rem, 2.5vw, 2.6rem);
}

.pc-screen-left p {
  margin: 0;
  max-width: 28rem;
  color: var(--pc-muted);
  line-height: 1.9;
}

.pc-screen-right {
  display: grid;
  gap: 1rem;
}

.pc-code-card {
  min-height: 150px;
  border-radius: 1.25rem;
  padding: 1.1rem;
  background: linear-gradient(180deg, rgba(237, 246, 255, 0.96), rgba(201, 215, 255, 0.84));
  color: #10192d;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.pc-code-card span {
  align-self: flex-start;
  padding: 0.28rem 0.6rem;
  border-radius: 999px;
  background: rgba(11, 16, 32, 0.1);
  font-size: 0.8rem;
  letter-spacing: 0.18em;
}

.pc-code-card-soft {
  background: linear-gradient(180deg, rgba(111, 227, 255, 0.16), rgba(99, 255, 168, 0.14));
}

.pc-dock {
  display: flex;
  justify-content: center;
  gap: 0.6rem;
  padding: 1rem 0 0.2rem;
}

.pc-dock i {
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
}

.pc-platforms {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  padding: 1rem 0 1.2rem;
}

.pc-platform {
  padding: 1.25rem;
  border-radius: 1.35rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--pc-border);
  box-shadow: 0 16px 26px rgba(0, 0, 0, 0.12);
}

.pc-platform.is-active {
  background: linear-gradient(180deg, rgba(111, 227, 255, 0.12), rgba(255, 255, 255, 0.04));
}

.pc-platform span {
  display: inline-flex;
  padding: 0.28rem 0.6rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--pc-accent);
}

.pc-platform h2 {
  margin: 0.85rem 0 0.45rem;
  font-size: 1.08rem;
}

.pc-platform p {
  margin: 0;
  color: var(--pc-muted);
  line-height: 1.8;
}

.pc-platform a {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin-top: 0.95rem;
  font-weight: 700;
  color: var(--pc-accent);
}

.pc-system {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
  gap: 1rem;
  padding: 1rem 0 1.2rem;
}

.pc-panel {
  border-radius: 1.45rem;
  border: 1px solid var(--pc-border);
  background: var(--pc-surface);
  backdrop-filter: blur(16px);
  box-shadow: 0 18px 34px rgba(0, 0, 0, 0.14);
}

.pc-panel-large {
  padding: 1.4rem;
}

.pc-panel-large h2,
.pc-matrix-head h2,
.pc-faq-head h2,
.pc-issue-card h2 {
  margin: 0;
  font-size: clamp(1.5rem, 2.2vw, 2.35rem);
}

.pc-panel-large p {
  color: var(--pc-muted);
  line-height: 1.9;
}

.pc-checklist {
  margin: 1rem 0 0;
  padding-left: 1.1rem;
  color: var(--pc-text);
  line-height: 1.9;
}

.pc-panel-side {
  padding: 1.25rem;
}

.pc-side-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.pc-side-head span {
  color: var(--pc-muted);
}

.pc-side-rail {
  margin: 1rem 0;
  height: 0.82rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  overflow: hidden;
}

.pc-side-rail span {
  display: block;
  width: 62%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--pc-accent), var(--pc-accent-2));
}

.pc-side-data {
  margin: 0;
}

.pc-side-data > div {
  padding: 1rem 0;
  border-bottom: 1px solid rgba(162, 181, 225, 0.1);
}

.pc-side-data > div:last-child {
  border-bottom: 0;
}

.pc-side-data dt {
  color: var(--pc-muted);
  font-size: 0.9rem;
}

.pc-side-data dd {
  margin: 0.35rem 0 0;
  font-weight: 700;
}

.pc-matrix {
  padding: 1rem 0 1.2rem;
}

.pc-steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.1rem;
}

.pc-steps article {
  padding: 1.05rem;
  border-radius: 1.25rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--pc-border);
}

.pc-steps span {
  color: var(--pc-accent-3);
  letter-spacing: 0.18em;
  font-size: 0.8rem;
}

.pc-steps h3 {
  margin: 0.7rem 0 0.45rem;
}

.pc-steps p {
  margin: 0;
  color: var(--pc-muted);
  line-height: 1.8;
}

.pc-issues {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.9fr);
  gap: 1rem;
  padding: 1rem 0 1.2rem;
}

.pc-issue-card {
  padding: 1.35rem;
  border-radius: 1.35rem;
  border: 1px solid var(--pc-border);
  background: var(--pc-surface);
}

.pc-issue-card details {
  border-top: 1px solid rgba(162, 181, 225, 0.1);
  padding: 0.9rem 0;
}

.pc-issue-card details:first-of-type {
  border-top: 0;
  padding-top: 0;
}

.pc-issue-card summary {
  cursor: pointer;
  list-style: none;
  font-weight: 700;
}

.pc-issue-card summary::-webkit-details-marker {
  display: none;
}

.pc-issue-card p {
  margin: 0.65rem 0 0;
  color: var(--pc-muted);
  line-height: 1.85;
}

.pc-issue-card-accent {
  background: linear-gradient(180deg, rgba(111, 227, 255, 0.09), rgba(255, 255, 255, 0.04));
}

.pc-issue-card-accent a {
  display: inline-flex;
  margin-top: 1rem;
  color: var(--pc-accent);
  font-weight: 700;
}

.pc-faq {
  padding: 1rem 0 2rem;
}

.pc-faq-head {
  margin-bottom: 1rem;
}

.pc-faq-list {
  display: grid;
  gap: 0.9rem;
}

.pc-faq-item {
  border-radius: 1.2rem;
  border: 1px solid var(--pc-border);
  background: rgba(255, 255, 255, 0.04);
  overflow: hidden;
}

.pc-faq-item summary {
  padding: 1.05rem 1.1rem;
  cursor: pointer;
  list-style: none;
  font-weight: 700;
}

.pc-faq-item summary::-webkit-details-marker {
  display: none;
}

.pc-faq-item p {
  margin: 0;
  padding: 0 1.1rem 1.1rem;
  color: var(--pc-muted);
  line-height: 1.85;
}

.pc-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0 2.4rem;
  color: var(--pc-muted);
}

.pc-footer strong {
  color: var(--pc-text);
}

.pc-footer p {
  margin: 0.35rem 0 0;
}

@media (max-width: 1100px) {
  .pc-hero,
  .pc-system,
  .pc-issues {
    grid-template-columns: 1fr;
  }

  .pc-platforms,
  .pc-steps {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 860px) {
  .pc-nav {
    display: none;
  }

  .pc-menu {
    display: inline-flex;
  }

  .pc-nav.is-open {
    display: flex;
    position: absolute;
    left: 1rem;
    right: 1rem;
    top: 4.7rem;
    flex-direction: column;
    padding: 1rem;
    border-radius: 1rem;
    background: rgba(11, 16, 32, 0.96);
    border: 1px solid var(--pc-border);
    box-shadow: var(--pc-shadow);
  }

  .pc-screen {
    grid-template-columns: 1fr;
  }

  .pc-platforms,
  .pc-steps {
    grid-template-columns: 1fr;
  }

  .pc-hero {
    padding-top: 2.4rem;
  }
}

@media (max-width: 560px) {
  .pc-header-inner {
    width: min(100%, calc(100% - 1rem));
  }

  .pc-hero,
  .pc-platforms,
  .pc-system,
  .pc-matrix,
  .pc-issues,
  .pc-faq,
  .pc-footer {
    width: calc(100% - 1rem);
  }

  .pc-hero h1 {
    font-size: clamp(2.2rem, 14vw, 3.6rem);
  }

  .pc-footer {
    flex-direction: column;
    align-items: flex-start;
  }
}