:root {
  color-scheme: light;
  --bg: #f3f4f6;
  --fg: #1f2937;
  --muted: #6b7280;
  --card: #ffffff;
  --border: #e5e7eb;
  --accent: #059669;
  --accent-dark: #047857;
  --accent-soft: #d1fae5;
  --link: #047857;
  --code-bg: #fef3c7;
  --code-fg: #c2410c;
  --shadow: 0 0.75rem 1.75rem rgba(15, 23, 42, 0.08);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 1rem/1.65 "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
}

a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }

img { max-width: 100%; height: auto; }

.skip {
  position: absolute;
  left: -999px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: #ffffff;
  border-bottom: 0.0625rem solid var(--border);
}

.header-inner,
.wrap,
.footer-inner {
  width: min(72rem, calc(100% - 2.5rem));
  margin: 0 auto;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4.25rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: inherit;
  text-decoration: none;
  font-weight: 800;
  font-size: 1.15rem;
}

.brand img {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 0.55rem;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1rem;
  align-items: center;
}

.nav a {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--fg);
  font-weight: 600;
  font-size: 0.95rem;
}

.nav-icon {
  width: 1.05rem;
  height: 1.05rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex: 0 0 auto;
}

.nav a.active,
.nav a:hover {
  color: var(--accent-dark);
}

.hero {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 2.5rem;
  align-items: center;
  padding: 3rem 0 2.5rem;
}

.kicker {
  color: var(--accent-dark);
  font-weight: 700;
  letter-spacing: 0.08em;
  font-size: 0.85rem;
}

.hero h1 {
  margin: 0.4rem 0 0.75rem;
  font-size: 2.6rem;
  line-height: 1.15;
}

.lead {
  font-size: 1.08rem;
  color: var(--muted);
  margin: 0 0 1.25rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 1.25rem 0 1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1.1rem;
  border-radius: 0.65rem;
  border: 0.0625rem solid var(--border);
  background: var(--card);
  color: var(--fg);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
}

.btn:hover { text-decoration: none; background: #f9fafb; }

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.btn-primary:hover { background: var(--accent-dark); }

.meta-list {
  display: grid;
  gap: 0.35rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.hero-aside {
  display: grid;
  justify-items: center;
  gap: 1rem;
}

.qr-card {
  background: var(--card);
  border: 0.0625rem solid var(--border);
  border-radius: 1rem;
  padding: 1rem;
  text-align: center;
  box-shadow: var(--shadow);
}

.qr-card img {
  width: 9.5rem;
  height: 9.5rem;
}

.qr-card p {
  margin: 0.5rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.section {
  padding: 2.25rem 0;
}

.section h2 {
  margin: 0 0 0.75rem;
  font-size: 1.7rem;
}

.section-lead {
  color: var(--muted);
  margin: 0 0 1.25rem;
  max-width: 48rem;
}

.grid-3,
.grid-2 {
  display: grid;
  gap: 1rem;
}

.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--card);
  border: 0.0625rem solid var(--border);
  border-radius: 1rem;
  padding: 1.2rem 1.25rem;
}

.card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.12rem;
}

.card p, .card li { color: var(--fg); }

.card ul {
  margin: 0;
  padding-left: 1.15rem;
}

.phones {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.phone-card {
  margin: 0;
  background: var(--card);
  border: 0.0625rem solid var(--border);
  border-radius: 1rem;
  padding: 0.85rem;
  box-shadow: var(--shadow);
}

.phone-card figcaption {
  text-align: center;
  font-weight: 700;
  margin-bottom: 0.65rem;
}

.phone {
  width: 100%;
  aspect-ratio: 9 / 19;
  border: 0.18rem solid #111827;
  border-radius: 1.4rem;
  overflow: hidden;
  background: #f3f4f6;
  display: flex;
  flex-direction: column;
  font-size: 0.62rem;
}

.status {
  display: flex;
  justify-content: space-between;
  padding: 0.35rem 0.7rem 0.2rem;
  font-weight: 700;
  background: #ffffff;
}

.app-head {
  background: #ffffff;
  padding: 0.45rem 0.7rem 0.5rem;
  font-weight: 800;
  font-size: 0.85rem;
  border-bottom: 0.04rem solid var(--border);
}

.search-fake,
.row,
.chip-row,
.qa,
.setting,
.code-card {
  margin: 0.45rem 0.55rem;
}

.search-fake {
  background: #ffffff;
  border: 0.04rem solid var(--border);
  border-radius: 0.5rem;
  color: var(--muted);
  padding: 0.35rem 0.5rem;
}

.row, .setting, .code-card, .qa {
  background: #ffffff;
  border: 0.04rem solid var(--border);
  border-radius: 0.55rem;
  padding: 0.4rem 0.5rem;
}

.row {
  display: flex;
  justify-content: space-between;
  gap: 0.4rem;
}

.row b { display: block; }
.row span, .setting span, .muted { color: var(--muted); }

.chip-row { display: flex; gap: 0.3rem; flex-wrap: wrap; }
.chip {
  background: var(--accent-soft);
  color: var(--accent-dark);
  border-radius: 999px;
  padding: 0.12rem 0.4rem;
  font-weight: 700;
}

.code-card pre {
  margin: 0.25rem 0 0;
  background: var(--code-bg);
  color: var(--code-fg);
  padding: 0.3rem;
  border-radius: 0.35rem;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
}

.option {
  border: 0.04rem solid var(--border);
  border-radius: 0.45rem;
  padding: 0.32rem 0.4rem;
  margin-top: 0.28rem;
  background: #fff;
}

.option.on {
  border-color: var(--accent);
  background: var(--accent-soft);
  font-weight: 700;
}

.confirm {
  margin: 0.5rem 0.55rem;
  background: var(--accent);
  color: #fff;
  text-align: center;
  border-radius: 0.5rem;
  padding: 0.4rem;
  font-weight: 700;
}

.about-icon {
  width: 2.2rem;
  height: 2.2rem;
  border-radius: 0.55rem;
  display: block;
  margin: 0.2rem auto 0.35rem;
}

.tabs {
  margin-top: auto;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  background: #ffffff;
  border-top: 0.04rem solid var(--border);
  text-align: center;
  padding: 0.35rem 0.15rem 0.45rem;
  color: var(--muted);
}

.tabs b { color: var(--accent-dark); font-weight: 800; }

.flow {
  display: block;
  margin: 0 auto;
  max-width: 46rem;
  background: #fff;
  border: 0.0625rem solid var(--border);
  border-radius: 1rem;
  padding: 1rem;
}

.legal {
  background: var(--card);
  border: 0.0625rem solid var(--border);
  border-radius: 1rem;
  padding: 1.5rem 1.6rem 2rem;
}

.legal h1 { margin-top: 0; }
.legal h2 { font-size: 1.2rem; margin-top: 1.6rem; }
.legal p, .legal li { color: #374151; }

.catalog {
  overflow: hidden;
  padding: 0;
}

.toolbar {
  display: grid;
  gap: 0.75rem;
  padding: 0.9rem 0.9rem 0.75rem;
  border-bottom: 0.0625rem solid var(--border);
}

.toolbar label { font-weight: 600; }
.toolbar input {
  width: 100%;
  border: 0.0625rem solid var(--border);
  border-radius: 0.6rem;
  padding: 0.65rem 0.75rem;
  background: var(--bg);
  color: var(--fg);
  font: inherit;
  outline: none;
}

table {
  width: 100%;
  border-collapse: collapse;
}

thead th {
  text-align: left;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 0.75rem 0.9rem;
  border-bottom: 0.0625rem solid var(--border);
  background: #f9fafb;
}

tbody td {
  padding: 0.75rem 0.9rem;
  border-bottom: 0.0625rem solid var(--border);
  vertical-align: top;
}

tbody tr:hover { background: #f9fafb; }

.path {
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.95rem;
  word-break: break-word;
}

.size, .mtime, .lang { white-space: nowrap; color: var(--muted); }
.action { white-space: nowrap; }
.action .btn + .btn { margin-left: 0.4rem; }
.btn.copied { background: #16a34a; color: #fff; border-color: #16a34a; }

.site-footer {
  margin-top: 2rem;
  background: #111827;
  color: #e5e7eb;
  padding: 2rem 0 1.4rem;
}

.site-footer a { color: #6ee7b7; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 1.5rem;
}

.site-footer h2 {
  margin: 0 0 0.6rem;
  font-size: 1rem;
  color: #fff;
}

.site-footer p, .site-footer li { margin: 0 0 0.4rem; color: #d1d5db; font-size: 0.92rem; }
.site-footer ul { margin: 0; padding-left: 1.1rem; }
.copyright {
  margin-top: 1.4rem;
  padding-top: 1rem;
  border-top: 0.0625rem solid #374151;
  color: #9ca3af;
  font-size: 0.88rem;
}

@media (max-width: 64rem) {
  .hero, .grid-3, .phones, .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 48rem) {
  .hero, .grid-3, .grid-2, .phones, .footer-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 2rem; }
  thead th:nth-child(4), tbody td:nth-child(4) { display: none; }
  .header-inner { flex-wrap: wrap; padding: 0.6rem 0; }
}

@media (max-width: 36rem) {
  thead th:nth-child(3), tbody td:nth-child(3) { display: none; }
}

.requirement-grid { align-items: start; }
.requirement-card { min-width: 0; scroll-margin-top: 8rem; }
.requirement-card h2 { margin: 0.25rem 0 0.75rem; }
.requirement-card .hero-actions { align-items: stretch; }
.requirement-status { color: var(--accent-dark); }
.requirement-status:empty { display: none; }
.requirement-next { padding: 0.8rem; background: var(--accent-soft); border-radius: 0.5rem; }
.requirement-card summary { cursor: pointer; font-weight: 600; padding: 0.65rem 0; }
.requirement-label { display: block; margin: 0.5rem 0; color: var(--muted); }
.requirement-content {
  display: block;
  width: 100%;
  min-height: 18rem;
  padding: 0.9rem;
  border: 0.0625rem solid var(--border);
  border-radius: 0.5rem;
  background: var(--bg);
  color: var(--fg);
  font: 0.9rem/1.7 ui-monospace, SFMono-Regular, Consolas, monospace;
  resize: vertical;
  overflow-wrap: anywhere;
}
.requirement-card :focus-visible { outline: 0.15rem solid var(--accent-dark); outline-offset: 0.2rem; }
.requirement-card button:disabled { opacity: 0.65; cursor: wait; }