:root {
  color-scheme: light;
  --install-bg: #f2e8d6;
  --install-bg-2: #fffaf2;
  --install-surface: rgba(255, 255, 255, 0.8);
  --install-border: rgba(98, 77, 49, 0.12);
  --install-text: #2a2430;
  --install-muted: #655c62;
  --install-accent: #f08d4f;
  --install-accent-2: #52b58a;
  --install-accent-3: #8b7dff;
  --install-shadow: 0 26px 78px rgba(102, 78, 42, 0.16);
}

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

html {
  scroll-behavior: smooth;
}

body.install-page {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  min-height: 100vh;
  color: var(--install-text);
  background:
    radial-gradient(circle at 12% 10%, rgba(240, 141, 79, 0.14), transparent 22%),
    radial-gradient(circle at 82% 12%, rgba(82, 181, 138, 0.14), transparent 22%),
    linear-gradient(180deg, var(--install-bg), var(--install-bg-2));
}

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

.install-skip {
  position: absolute;
  left: 1rem;
  top: -3rem;
  z-index: 20;
  padding: 0.75rem 1rem;
  border-radius: 999px;
  background: #fff;
  box-shadow: var(--install-shadow);
  transition: top 0.2s ease;
}

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

.install-header {
  position: sticky;
  top: 0;
  z-index: 15;
  background: rgba(242, 232, 214, 0.82);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(98, 77, 49, 0.08);
}

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

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

.install-logo {
  width: 2.9rem;
  aspect-ratio: 1;
  border-radius: 1rem;
  background: linear-gradient(145deg, #fff6ea, #f0d9be);
  border: 1px solid rgba(98, 77, 49, 0.08);
  position: relative;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.4);
}

.install-logo span:first-child {
  position: absolute;
  left: 0.58rem;
  top: 0.62rem;
  width: 1rem;
  height: 1rem;
  border-radius: 50%;
  background: var(--install-accent);
}

.install-logo span:last-child {
  position: absolute;
  right: 0.48rem;
  bottom: 0.58rem;
  width: 0.95rem;
  height: 0.28rem;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--install-accent-2), var(--install-accent-3));
}

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

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

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

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

.install-menu {
  display: none;
  width: 3rem;
  height: 3rem;
  border: 1px solid var(--install-border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 0.22rem;
}

.install-menu span {
  width: 1rem;
  height: 1.5px;
  background: var(--install-text);
  border-radius: 999px;
}

.install-hero,
.install-paths,
.install-steps,
.install-checklist,
.install-faq,
.install-footer {
  width: min(1200px, calc(100% - 2rem));
  margin: 0 auto;
}

.install-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.96fr);
  gap: 2rem;
  align-items: center;
  padding: 4rem 0 2rem;
}

.install-eyebrow,
.install-section-kicker {
  margin: 0 0 0.85rem;
  font-size: 0.8rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--install-muted);
}

.install-copy h1 {
  margin: 0;
  font-size: clamp(2.8rem, 6vw, 5.1rem);
  line-height: 0.96;
  letter-spacing: -0.07em;
}

.install-copy h1 span {
  display: block;
}

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

.install-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 1.6rem;
}

.install-button {
  min-height: 3.25rem;
  padding: 0.8rem 1.25rem;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border: 1px solid transparent;
  font-weight: 700;
}

.install-button-primary {
  background: linear-gradient(135deg, #2a2430, #4b3d4c);
  color: #fff;
  box-shadow: 0 18px 34px rgba(42, 36, 48, 0.16);
}

.install-button-secondary {
  background: rgba(255, 255, 255, 0.78);
  border-color: var(--install-border);
}

.install-note {
  margin-top: 1rem;
  color: var(--install-muted);
}

.install-board {
  padding: 1.35rem;
  border-radius: 2rem;
  background:
    radial-gradient(circle at 18% 20%, rgba(240, 141, 79, 0.16), transparent 20%),
    radial-gradient(circle at 76% 18%, rgba(82, 181, 138, 0.16), transparent 22%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.9), rgba(247, 238, 224, 0.92));
  border: 1px solid rgba(98, 77, 49, 0.1);
  box-shadow: var(--install-shadow);
}

.install-board-head {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  color: var(--install-muted);
}

.install-board-head strong {
  color: var(--install-text);
}

.install-rail {
  margin: 1rem 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.5rem;
}

.install-rail i {
  height: 0.8rem;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(240, 141, 79, 0.2), rgba(82, 181, 138, 0.18));
}

.install-slab {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.9rem;
}

.install-slab-card {
  min-height: 180px;
  border-radius: 1.35rem;
  padding: 1.1rem;
  background: rgba(255, 255, 255, 0.84);
  border: 1px solid rgba(98, 77, 49, 0.08);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.install-slab-card.is-active {
  background: linear-gradient(180deg, #fff, #fff6e9);
}

.install-slab-card span {
  display: inline-flex;
  width: fit-content;
  padding: 0.28rem 0.6rem;
  border-radius: 999px;
  background: rgba(240, 141, 79, 0.12);
  color: #b8642c;
  font-size: 0.8rem;
}

.install-slab-card strong {
  font-size: 1.2rem;
}

.install-paths {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  padding: 1rem 0 1.2rem;
}

.install-path-card {
  padding: 1.25rem;
  border-radius: 1.35rem;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--install-border);
  box-shadow: 0 16px 28px rgba(102, 78, 42, 0.08);
}

.install-path-card.is-active {
  background: linear-gradient(180deg, #fff, #fff4e7);
}

.install-path-card span {
  display: inline-flex;
  padding: 0.28rem 0.6rem;
  border-radius: 999px;
  background: rgba(82, 181, 138, 0.14);
  color: #338e64;
}

.install-path-card p {
  margin: 0.7rem 0 0;
  color: var(--install-muted);
  line-height: 1.8;
}

.install-path-card a {
  display: inline-flex;
  gap: 0.45rem;
  margin-top: 0.95rem;
  color: #9a5325;
  font-weight: 700;
}

.install-steps {
  padding: 1rem 0 1.2rem;
}

.install-steps-head h2,
.install-check-card h2,
.install-faq-head h2 {
  margin: 0;
  font-size: clamp(1.55rem, 2.2vw, 2.35rem);
}

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

.install-step-grid article {
  padding: 1.05rem;
  border-radius: 1.2rem;
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid var(--install-border);
}

.install-step-grid span {
  color: #b6622d;
  letter-spacing: 0.18em;
  font-size: 0.8rem;
}

.install-step-grid h3 {
  margin: 0.7rem 0 0.45rem;
}

.install-step-grid p {
  margin: 0;
  color: var(--install-muted);
  line-height: 1.8;
}

.install-checklist {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(280px, 0.98fr);
  gap: 1rem;
  padding: 1rem 0 1.2rem;
}

.install-check-card {
  padding: 1.35rem;
  border-radius: 1.35rem;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--install-border);
}

.install-check-card ul {
  margin: 1rem 0 0;
  padding-left: 1.1rem;
  line-height: 1.9;
}

.install-check-card-accent {
  background: linear-gradient(180deg, #fff, #fff4e8);
}

.install-check-card-accent a {
  display: inline-flex;
  margin-top: 1rem;
  color: #9a5325;
  font-weight: 700;
}

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

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

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

.install-faq-item {
  border-radius: 1.2rem;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid var(--install-border);
}

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

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

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

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

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

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

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

  .install-paths,
  .install-step-grid {
    grid-template-columns: 1fr 1fr;
  }
}

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

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

  .install-nav.is-open {
    display: flex;
    position: absolute;
    left: 1rem;
    right: 1rem;
    top: 4.7rem;
    flex-direction: column;
    padding: 1rem;
    border-radius: 1rem;
    background: rgba(242, 232, 214, 0.98);
    border: 1px solid var(--install-border);
    box-shadow: var(--install-shadow);
  }

  .install-paths,
  .install-step-grid {
    grid-template-columns: 1fr;
  }

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

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

  .install-hero,
  .install-paths,
  .install-steps,
  .install-checklist,
  .install-faq,
  .install-footer {
    width: calc(100% - 1rem);
  }

  .install-copy h1 {
    font-size: clamp(2.2rem, 13vw, 3.7rem);
  }

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