:root {
  color-scheme: light;
  font-family: "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  background: #f6f7f9;
  color: #15171a;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-height: 100vh; background: var(--page-bg); color: var(--text); }
a { color: inherit; }
img { display: block; max-width: 100%; }

.site {
  --accent: #1296db;
  --accent-2: #f59e0b;
  --page-bg: #f5f7fa;
  --surface: #ffffff;
  --surface-2: #eef4fb;
  --text: #17202a;
  --muted: #667085;
  --line: rgba(23, 32, 42, 0.13);
  --shadow: 0 22px 70px rgba(18, 30, 50, 0.12);
}

.site-jiejie { --accent: #ffd100; --accent-2: #111111; --page-bg: #f6f7f9; --surface-2: #fff5b8; --text: #111111; --muted: #565b64; --line: rgba(17,17,17,0.14); }
.site-watermark { color-scheme: dark; --accent: #fe2c55; --accent-2: #00f5ff; --page-bg: #050505; --surface: #111111; --surface-2: #181818; --text: #f8f8f8; --muted: #b8b8b8; --line: rgba(255,255,255,0.13); --shadow: 0 24px 90px rgba(0,0,0,0.46); }
.site-tuantuan { --accent: #ff2442; --accent-2: #111111; --page-bg: #fff7f8; --surface-2: #ffecef; --text: #191216; --muted: #75636a; --line: rgba(255,36,66,0.18); }

.site-header, .site-footer, main {
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 22px 0 12px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 900;
  text-decoration: none;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: var(--accent);
  color: var(--accent-2);
  font-size: 18px;
}

.site-watermark .brand-mark { color: #ffffff; text-shadow: 1px 0 var(--accent-2); }
.site-header nav { display: flex; align-items: center; justify-content: flex-end; gap: 16px; flex-wrap: wrap; font-size: 14px; color: var(--muted); }
.site-header nav a { text-decoration: none; }
.site-header nav a:hover, .site-header nav a:focus-visible { color: var(--text); outline: none; }

.hero {
  min-height: calc(100vh - 74px);
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(310px, 0.95fr);
  align-items: center;
  gap: 56px;
  padding: 34px 0 76px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 900;
}

h1, h2, p { overflow-wrap: anywhere; }
h1 { margin: 0; max-width: 760px; font-size: clamp(48px, 8vw, 92px); line-height: 0.98; letter-spacing: 0; }
h2 { margin: 0; font-size: clamp(30px, 4.8vw, 52px); line-height: 1.08; letter-spacing: 0; }
.hero-line { margin: 20px 0 0; max-width: 680px; font-size: clamp(22px, 3vw, 34px); line-height: 1.25; font-weight: 800; }
.hero-desc, .section-head p, .scan-copy p, .content-page > p { color: var(--muted); font-size: 17px; line-height: 1.8; }
.hero-desc { max-width: 700px; margin: 18px 0 0; }

.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 28px; }
.primary-link, .secondary-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 8px;
  font-weight: 800;
  text-decoration: none;
}
.primary-link { background: var(--accent); color: var(--accent-2); }
.site-yaochi .primary-link, .site-watermark .primary-link, .site-tuantuan .primary-link { color: #fff; }
.secondary-link { border: 1px solid var(--line); color: var(--text); background: color-mix(in srgb, var(--surface) 72%, transparent); }

.hero-qr-card {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  max-width: 360px;
  margin: 24px 0 0;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 14px 34px rgba(18, 30, 50, 0.1);
}

.hero-qr-card img {
  width: 112px;
  height: 112px;
  object-fit: contain;
  border-radius: 6px;
}

.hero-qr-card figcaption {
  display: grid;
  gap: 6px;
  text-align: left;
}

.hero-qr-card strong {
  color: var(--text);
  font-size: 18px;
  line-height: 1.2;
}

.hero-qr-card span {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
}

.hero-preview-shell {
  display: grid;
  place-items: center;
  min-height: 520px;
}

.phone-stage { display: grid; place-items: center; min-height: 520px; }
.phone-shell {
  width: min(360px, 100%);
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 34px;
  background: color-mix(in srgb, var(--surface) 86%, transparent);
  box-shadow: var(--shadow);
}
.phone-top { display: flex; justify-content: center; gap: 6px; padding: 4px 0 14px; }
.phone-top span { width: 7px; height: 7px; border-radius: 99px; background: var(--line); }
.preview-stack { display: grid; gap: 10px; }
.preview-stack img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: 18px;
  border: 1px solid var(--line);
}

.phone-grid-banner,
.phone-scene-grid,
.phone-tool-list,
.phone-feed {
  width: min(420px, 100%);
  padding: 14px;
}

.preview-banner {
  display: grid;
  gap: 10px;
}

.preview-banner img {
  width: 100%;
  aspect-ratio: 16 / 8.5;
  object-fit: cover;
  border-radius: 18px;
  border: 1px solid var(--line);
}

.preview-banner-copy,
.preview-scene-head,
.preview-list-head,
.preview-feed-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 12px;
  padding: 2px 2px 0;
}

.preview-banner-copy span,
.preview-scene-head span,
.preview-list-head span,
.preview-feed-head span {
  display: block;
  color: var(--muted);
  font-size: 12px;
}

.preview-banner-copy strong,
.preview-scene-head strong,
.preview-list-head strong,
.preview-feed-head strong {
  display: block;
  font-size: 20px;
  line-height: 1.2;
}

.preview-banner-copy strong,
.preview-scene-head em,
.preview-list-head em,
.preview-feed-head em {
  color: var(--accent);
  font-style: normal;
  font-size: 12px;
  font-weight: 900;
}

.preview-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}

.preview-tile,
.preview-quick,
.preview-tool-row,
.preview-feed-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
}

.preview-tile {
  display: grid;
  gap: 7px;
  padding: 10px 9px 11px;
}

.preview-tile img,
.preview-quick img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 10px;
}

.preview-tile strong,
.preview-quick strong {
  display: block;
  font-size: 12px;
  line-height: 1.3;
}

.preview-tile span,
.preview-quick span,
.preview-tool-row span,
.preview-feed-copy span {
  color: var(--muted);
  font-size: 11px;
  line-height: 1.45;
}

.preview-scene-head,
.preview-list-head,
.preview-feed-head {
  padding-bottom: 4px;
}

.preview-quick-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.preview-quick {
  display: grid;
  gap: 8px;
  padding: 9px;
}

.preview-chip-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 10px;
}

.preview-chip-row span,
.preview-list-head em,
.preview-scene-head em,
.preview-feed-head em,
.preview-tool-row small,
.preview-feed-copy i {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 0 8px;
  border-radius: 999px;
  background: var(--surface-2);
  color: var(--muted);
  font-size: 11px;
  font-style: normal;
  white-space: nowrap;
}

.preview-tool-list,
.preview-feed-list {
  display: grid;
  gap: 10px;
  margin-top: 6px;
}

.preview-tool-row {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
  padding: 8px;
}

.preview-tool-row img {
  width: 76px;
  height: 60px;
  object-fit: cover;
  border-radius: 10px;
}

.preview-tool-row strong,
.preview-feed-copy strong {
  display: block;
  font-size: 13px;
  line-height: 1.35;
}

.preview-feed-card {
  display: grid;
  grid-template-columns: 102px minmax(0, 1fr);
  gap: 10px;
  padding: 10px;
}

.preview-feed-card img {
  width: 102px;
  height: 110px;
  object-fit: cover;
  border-radius: 10px;
}

.preview-feed-copy {
  display: grid;
  gap: 6px;
  align-content: start;
}

.preview-feed-copy i {
  width: fit-content;
}

.section { padding: 84px 0; border-top: 1px solid var(--line); }
.section-head { display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(280px, 0.7fr); gap: 34px; align-items: end; margin-bottom: 28px; }
.section-head p { margin: 0; }
.section-head .eyebrow { grid-column: 1 / -1; margin-bottom: -20px; }

.feature-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.feature-card, .faq-grid article, .community-card {
  display: block;
  min-height: 150px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  text-decoration: none;
}
.feature-card strong, .faq-grid strong, .community-card strong { display: block; font-size: 20px; margin-bottom: 10px; }
.feature-card p, .faq-grid p, .community-card span { margin: 0; color: var(--muted); line-height: 1.7; font-size: 15px; }

.scene-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.scene-list p {
  min-height: 120px;
  margin: 0;
  padding: 18px;
  border-left: 6px solid var(--accent);
  background: var(--surface-2);
  border-radius: 8px;
  line-height: 1.75;
  font-weight: 700;
}

.community-layout { display: grid; grid-template-columns: 280px minmax(0, 1fr); gap: 18px; }
.community-keywords {
  display: flex;
  align-content: flex-start;
  gap: 10px;
  flex-wrap: wrap;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-2);
}
.community-keywords span {
  padding: 7px 10px;
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  font-size: 14px;
  font-weight: 800;
}
.community-list { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }
.community-card {
  display: grid;
  gap: 8px;
}
.community-card em {
  font-style: normal;
  color: var(--accent);
  font-size: 12px;
  font-weight: 800;
}
.community-card:hover, .community-card:focus-visible { border-color: var(--accent); outline: 2px solid var(--accent); outline-offset: 2px; }

.section-scan {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: 28px;
  align-items: center;
}
.scan-copy h2 { max-width: 760px; }
.qr-box {
  margin: 0;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  text-align: center;
}
.qr-box img { width: 100%; aspect-ratio: 1; object-fit: contain; border-radius: 6px; }
.qr-box figcaption { margin-top: 10px; color: var(--muted); font-size: 14px; }

.faq-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.content-page { max-width: 960px; padding: 72px 0; }
.content-page > h1 { font-size: clamp(38px, 6vw, 68px); }
.content-page > p { max-width: 760px; }
.content-page .section { padding: 64px 0; }

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 34px 0 46px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}
.site-footer strong, .site-footer span { display: block; }
.site-footer strong { color: var(--text); margin-bottom: 6px; }
.footer-links { display: flex; justify-content: flex-end; gap: 12px; flex-wrap: wrap; }

@media (max-width: 860px) {
  .site-header { align-items: flex-start; flex-direction: column; }
  .site-header nav { justify-content: flex-start; }
  .hero { grid-template-columns: 1fr; min-height: 0; gap: 26px; padding-top: 44px; }
  .phone-stage { min-height: 0; }
  .phone-shell { width: min(420px, 100%); }
  .section-head, .community-layout, .section-scan { grid-template-columns: 1fr; }
  .feature-grid, .scene-list, .community-list, .faq-grid, .preview-grid, .preview-quick-grid { grid-template-columns: 1fr; }
  .qr-box { max-width: 260px; }
  .site-footer { flex-direction: column; }
  .footer-links { justify-content: flex-start; }
}

@media (max-width: 520px) {
  .site-header, .site-footer, main { width: min(100% - 28px, 1160px); }
  h1 { font-size: 44px; }
  .hero-line { font-size: 22px; }
  .hero-desc, .section-head p, .scan-copy p, .content-page > p { font-size: 16px; }
  .section { padding: 60px 0; }
  .hero-qr-card {
    display: flex;
    max-width: none;
  }
  .preview-tool-row,
  .preview-feed-card { grid-template-columns: 1fr; }
  .preview-tool-row img,
  .preview-feed-card img { width: 100%; height: 180px; }
}