/* ==========================================================================
   60cp下载app 内页骨架：双端并置风 · 橙调 Hero + 双手机 + 对照表 + 安装指引
   ========================================================================== */

:root {
  --oa-orange: #ea580c;
  --oa-orange-dk: #9a3412;
  --oa-amber: #fb923c;
  --oa-bg: #fff7ed;
  --oa-ink: #431407;
  --oa-muted: #8a6248;
  --oa-line: #fbd9b8;
  --oa-green: #16a34a;
}

body.oa-page {
  background: var(--oa-bg);
  color: var(--oa-ink);
}

.oa-page .brand-mark {
  background: linear-gradient(140deg, var(--oa-amber), var(--oa-orange));
  color: #fff7ed;
  box-shadow: 0 6px 16px rgba(234, 88, 12, .3);
}
.oa-page .brand-text em { color: var(--oa-orange); }
.oa-page .site-nav a.is-active { color: var(--oa-orange); }
.oa-page .site-nav a::after { background: var(--oa-orange); }
.oa-page .btn-login {
  background: linear-gradient(135deg, var(--oa-amber), var(--oa-orange));
  box-shadow: 0 8px 20px rgba(234, 88, 12, .3);
}
.oa-page .btn-login:hover { box-shadow: 0 12px 26px rgba(234, 88, 12, .4); }

/* ---------------- Hero ---------------- */
.oa-hero {
  position: relative;
  overflow: hidden;
  padding: 76px 0 96px;
  background:
    radial-gradient(720px 460px at 86% 8%, rgba(251, 146, 60, .22), transparent 64%),
    radial-gradient(560px 400px at 0% 100%, rgba(234, 88, 12, .1), transparent 70%),
    linear-gradient(180deg, #fffbf5, var(--oa-bg));
}

.oa-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(234, 88, 12, .07) 1px, transparent 1.4px);
  background-size: 26px 26px;
  mask-image: linear-gradient(180deg, transparent, #000 40%);
  pointer-events: none;
}

.oa-hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: 52px;
  align-items: center;
}

.oa-hero .pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  border-radius: 100px;
  background: #fff;
  border: 1px solid var(--oa-line);
  box-shadow: var(--shadow-s);
  font-size: 13px;
  font-weight: 700;
  color: var(--oa-orange);
}

.oa-hero h1 {
  margin: 22px 0 16px;
  font-size: clamp(32px, 4.4vw, 52px);
  line-height: 1.2;
  font-weight: 900;
  letter-spacing: -.6px;
}

.oa-hero h1 span {
  background: linear-gradient(100deg, var(--oa-amber), var(--oa-orange) 55%, var(--oa-orange-dk));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.oa-hero .lead {
  font-size: 16.5px;
  line-height: 1.9;
  color: var(--oa-muted);
  max-width: 520px;
}

.oa-hero .lead strong { color: var(--oa-ink); }

.oa-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.oa-page .btn-primary {
  background: linear-gradient(135deg, var(--oa-amber), var(--oa-orange));
  color: #fff;
  box-shadow: 0 10px 26px rgba(234, 88, 12, .32);
}

.oa-page .btn-primary:hover { box-shadow: 0 14px 32px rgba(234, 88, 12, .42); }

.oa-page .btn-room {
  background: #fff;
  border-color: var(--oa-line);
  color: var(--oa-orange);
}

.oa-visual { position: relative; }

.oa-visual img {
  border-radius: var(--radius-l);
  background: #fff;
  box-shadow: var(--shadow-m);
}

.oa-visual .sync-badge {
  position: absolute;
  right: -14px;
  bottom: 40px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  background: var(--oa-orange-dk);
  color: #fff7ed;
  border-radius: var(--radius-m);
  box-shadow: var(--shadow-m);
  font-size: 13.5px;
  font-weight: 700;
}

.oa-visual .sync-badge i {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: #4ade80;
  font-style: normal;
}

/* ---------------- 双端对照表 ---------------- */
.oa-section { padding: 80px 0 0; }

.oa-head {
  max-width: 560px;
  margin-bottom: 40px;
}

.oa-head .k {
  display: inline-block;
  font-size: 12.5px;
  font-weight: 800;
  letter-spacing: 2.4px;
  color: var(--oa-orange);
  margin-bottom: 12px;
}

.oa-head h2 { font-size: clamp(26px, 3.2vw, 38px); font-weight: 900; letter-spacing: -.4px; }

.oa-head p { margin-top: 12px; color: var(--oa-muted); font-size: 15.5px; }

.oa-table {
  overflow: hidden;
  border-radius: var(--radius-m);
  background: #fff;
  border: 1px solid var(--oa-line);
  box-shadow: var(--shadow-s);
  margin-bottom: 70px;
}

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

.oa-table th,
.oa-table td {
  padding: 18px 24px;
  text-align: left;
  border-bottom: 1px solid var(--oa-line);
  font-size: 14.5px;
}

.oa-table thead th {
  background: linear-gradient(135deg, #fff7ed, #ffedd5);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 1px;
  color: var(--oa-orange-dk);
  text-transform: uppercase;
}

.oa-table thead th:first-child { width: 140px; }

.oa-table tbody th {
  font-weight: 800;
  color: var(--oa-ink);
  width: 140px;
}

.oa-table td { color: var(--oa-muted); line-height: 1.7; }

.oa-table tbody tr:last-child td,
.oa-table tbody tr:last-child th { border-bottom: 0; }

.oa-table .flag {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 800;
}

.oa-table .flag.need { background: rgba(234, 88, 12, .12); color: var(--oa-orange); }

.oa-table .flag.ok { background: rgba(22, 163, 74, .12); color: var(--oa-green); }

/* ---------------- 安装指引（双栏步骤） ---------------- */
.oa-guide {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 70px;
}

.oa-guide-card {
  padding: 30px;
  border-radius: var(--radius-l);
  background: #fff;
  border: 1px solid var(--oa-line);
  box-shadow: var(--shadow-s);
}

.oa-guide-card.ios {
  background: linear-gradient(160deg, #fff, #f8fafc);
}

.oa-guide-card h3 {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 19px;
  font-weight: 900;
  margin-bottom: 20px;
}

.oa-guide-card h3 .os {
  width: 44px; height: 44px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  font-size: 22px;
}

.oa-guide-card.android h3 .os { background: rgba(22, 163, 74, .12); }
.oa-guide-card.ios h3 .os { background: rgba(51, 65, 85, .1); }

.oa-guide-card ol {
  list-style: none;
  counter-reset: gstep;
}

.oa-guide-card ol li {
  counter-increment: gstep;
  position: relative;
  padding: 0 0 16px 44px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--oa-muted);
}

.oa-guide-card ol li:last-child { padding-bottom: 0; }

.oa-guide-card ol li::before {
  content: counter(gstep, decimal-leading-zero);
  position: absolute;
  left: 0; top: 0;
  width: 30px; height: 30px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: rgba(234, 88, 12, .1);
  color: var(--oa-orange);
  font-size: 13px;
  font-weight: 800;
}

.oa-guide-card ol li b { color: var(--oa-ink); }

/* ---------------- 版本 + 提示 ---------------- */
.oa-twocol {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 26px;
  margin-bottom: 70px;
}

.oa-vercard {
  padding: 30px;
  border-radius: var(--radius-m);
  background: #fff;
  border: 1px solid var(--oa-line);
  box-shadow: var(--shadow-s);
}

.oa-vercard h3 { font-size: 17px; font-weight: 800; margin-bottom: 16px; }

.oa-vercard .vnow {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 16px;
}

.oa-vercard .vnow b {
  font-family: var(--mono);
  font-size: 34px;
  font-weight: 900;
  color: var(--oa-orange);
}

.oa-vercard .vnow span { font-size: 13.5px; color: var(--oa-muted); }

.oa-vercard ul li {
  position: relative;
  padding: 6px 0 6px 20px;
  font-size: 14px;
  color: var(--oa-muted);
  line-height: 1.6;
}

.oa-vercard ul li::before {
  content: "";
  position: absolute;
  left: 0; top: 13px;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--oa-amber);
}

.oa-warn {
  padding: 30px;
  border-radius: var(--radius-m);
  background: linear-gradient(160deg, #fff, #fff7ed);
  border: 1px dashed var(--oa-line);
}

.oa-warn h3 { font-size: 17px; font-weight: 800; margin-bottom: 14px; }

.oa-warn p { font-size: 14px; line-height: 1.8; color: var(--oa-muted); }

.oa-warn .note {
  margin-top: 16px;
  padding: 12px 16px;
  border-radius: 10px;
  background: rgba(234, 88, 12, .08);
  color: var(--oa-orange-dk);
  font-size: 13.5px;
  line-height: 1.6;
}

/* ---------------- 相关 + CTA ---------------- */
.oa-related {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 70px;
}

.oa-related a {
  display: block;
  padding: 22px 24px;
  background: #fff;
  border: 1px solid var(--oa-line);
  border-radius: var(--radius-m);
  box-shadow: var(--shadow-s);
  transition: transform .22s, box-shadow .22s;
}

.oa-related a:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 34px rgba(234, 88, 12, .16);
  border-color: var(--oa-amber);
}

.oa-related strong { display: block; font-size: 15.5px; font-weight: 800; margin-bottom: 4px; }

.oa-related span { font-size: 13.5px; color: var(--oa-muted); }

.oa-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 26px;
  flex-wrap: wrap;
  padding: 42px;
  border-radius: var(--radius-l);
  background: linear-gradient(140deg, var(--oa-orange-dk), var(--oa-orange));
  color: #fff;
  box-shadow: var(--shadow-m);
}

.oa-cta h2 { font-size: clamp(22px, 2.8vw, 30px); font-weight: 900; }

.oa-cta p { color: rgba(255, 247, 237, .8); margin-top: 8px; font-size: 15px; }

.oa-cta .row { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }

.oa-cta .btn-primary {
  background: #fff;
  color: var(--oa-orange-dk);
  box-shadow: 0 12px 30px rgba(0, 0, 0, .25);
}

.oa-cta .btn-room {
  background: rgba(255, 255, 255, .12);
  border-color: rgba(255, 247, 237, .4);
  color: #fff7ed;
}

/* ---------------- 动画 ---------------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .6s ease, transform .6s ease;
}

[data-reveal].is-visible { opacity: 1; transform: none; }

/* ---------------- 响应式 ---------------- */
@media (max-width: 980px) {
  .oa-hero-grid { grid-template-columns: 1fr; gap: 44px; }
  .oa-visual { max-width: 520px; }
  .oa-guide { grid-template-columns: 1fr; }
  .oa-twocol { grid-template-columns: 1fr; }
  .oa-related { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  .oa-hero { padding: 52px 0 60px; }
  .oa-hero h1 { font-size: 32px; }
  .oa-table th,
  .oa-table td { padding: 14px 16px; }
  .oa-table thead { display: none; }
  .oa-table tbody th {
    display: block;
    padding-top: 18px;
    border-bottom: 0;
  }
  .oa-table tbody td { display: block; padding-top: 4px; }
  .oa-cta { flex-direction: column; text-align: center; align-items: center; }
}