:root {
  --red: #c9090d;
  --red-dark: #9b070a;
  --gold: #dba64d;
  --gold-line: #ffe5a6;
  --paper: #fff8f1;
  --card: #ffffff;
  --ink: #382923;
  --muted: #6a5555;
  --line: #f0e6e6;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,
body {
  min-height: 100%;
}

body {
  color: var(--ink);
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(
      900px 420px at 50% -120px,
      rgba(219, 166, 77, 0.28),
      transparent 60%
    ),
    linear-gradient(180deg, #8f0b18 0%, #5c030b 46%, #3a0208 100%);
  padding: 20px 16px 48px;
}

button {
  font: inherit;
  appearance: none;
}

.wrap {
  width: min(440px, 100%);
  margin: 0 auto;
}

.top {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #fff8f0;
  margin-bottom: 18px;
}

.logo {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.22);
}

.top strong {
  display: block;
  font-size: 20px;
  letter-spacing: 0.08em;
}

.top small {
  color: rgba(255, 248, 240, 0.72);
  font-size: 12px;
}

.hero {
  position: relative;
  padding: 26px 22px 24px;
  border-radius: 24px;
  color: #fff8f0;
  background: linear-gradient(160deg, #d31433 0%, #a0091b 62%, #7a0614 100%);
  box-shadow: 0 16px 40px rgba(90, 3, 11, 0.28);
  border-bottom: 3px solid var(--gold);
}

.hero::after {
  content: "";
  position: absolute;
  inset: 10px;
  border: 1px solid rgba(255, 229, 166, 0.38);
  border-radius: 16px;
  pointer-events: none;
}

.seal {
  display: inline-block;
  padding: 3px 10px;
  border: 1px solid #ffe5a6;
  border-radius: 999px;
  color: #ffe5a6;
  font-size: 12px;
  letter-spacing: 0.14em;
}

.hero h1 {
  margin: 14px 0 10px;
  font-size: 28px;
  line-height: 1.3;
  letter-spacing: 0.04em;
}

.hero p {
  color: rgba(255, 248, 240, 0.88);
  line-height: 1.65;
  font-size: 14px;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
  list-style: none;
}

.chips li {
  padding: 5px 10px;
  border-radius: 999px;
  background: rgba(255, 248, 240, 0.12);
  font-size: 12px;
}

.invite {
  margin-top: 14px;
  padding: 10px 12px;
  border-radius: 12px;
  background: rgba(255, 248, 240, 0.14);
  font-size: 13px;
}

.cards {
  display: grid;
  gap: 12px;
  margin-top: 16px;
}

.card {
  padding: 20px 18px 18px;
  border-radius: 20px;
  background: var(--card);
  box-shadow: 0 12px 32px rgba(58, 2, 8, 0.16);
}

.card.is-dim {
  opacity: 0.7;
}

.os {
  color: var(--red);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
}

.card h2 {
  margin: 8px 0;
  font-size: 22px;
}

.card p,
.guide p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

.hint {
  margin-top: 10px;
  color: #a15b12;
  font-size: 13px;
}

.btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 48px;
  margin-top: 16px;
  border: 0;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--red), var(--red-dark));
  color: #fff;
  font-size: 16px;
  font-weight: 650;
  cursor: pointer;
  text-decoration: none;
}

.btn:disabled {
  background: #c9b6b6;
  cursor: not-allowed;
}

.btn.ghost {
  margin-top: 10px;
  background: transparent;
  color: var(--red-dark);
  border: 1px solid rgba(201, 9, 13, 0.28);
}

.guide {
  margin-top: 16px;
  padding: 20px 18px;
  border-radius: 20px;
  background: var(--paper);
}

.guide h3 {
  font-size: 18px;
  margin-bottom: 14px;
}
.guide h4 {
  font-size: 15px;
  margin-bottom: 8px;
  color: var(--red-dark);
}

.cols {
  display: grid;
  gap: 16px;
}

.guide ol {
  padding-left: 18px;
  color: var(--muted);
  display: grid;
  gap: 8px;
  font-size: 14px;
  line-height: 1.55;
}

html:not(.show-ios) .ios-only,
html.show-ios .public-lead {
  display: none !important;
}

.page-android .ios-steps {
  display: none;
}

footer {
  margin-top: 22px;
  text-align: center;
  color: rgba(255, 248, 240, 0.58);
  font-size: 12px;
}

.mask,
.sheet {
  position: fixed;
  inset: 0;
  z-index: 30;
}

.mask {
  background: rgba(20, 4, 6, 0.78);
  padding: 24px 18px;
}

.mask-card,
.sheet-card {
  width: min(400px, 100%);
  margin: 72px auto 0;
  padding: 22px 18px 20px;
  border-radius: 20px;
  background: var(--paper);
}

.arrow {
  color: var(--gold);
  font-size: 13px;
  letter-spacing: 0.08em;
}

.mask h2,
.sheet h3 {
  margin: 10px 0;
}

.sheet {
  display: flex;
  align-items: flex-end;
  background: rgba(20, 4, 6, 0.45);
}

.mask[hidden],
.sheet[hidden] {
  display: none !important;
}

.sheet-card {
  width: 100%;
  margin: 0;
  border-radius: 22px 22px 0 0;
}

.sheet-card ol {
  padding-left: 18px;
  color: var(--muted);
  display: grid;
  gap: 8px;
  font-size: 14px;
}

@media (min-width: 900px) {
  html.show-ios .wrap {
    width: min(920px, 100%);
  }
  html.show-ios .cards {
    grid-template-columns: 1fr 1fr;
  }
  html.show-ios .page-android .ios-steps,
  html.show-ios .page-ios .android-steps {
    display: block;
  }
  html.show-ios .cols {
    grid-template-columns: 1fr 1fr;
  }
}

/* 提现端蓝色主题，与 App 保持一致 */
:root {
  --red: #096bd5;
  --red-dark: #064b9d;
  --gold: #9acaff;
  --gold-line: #d8ebff;
  --paper: #f5f9ff;
  --ink: #203b60;
  --muted: #748aa4;
  --line: #e2edf9;
}
body {
  background:
    radial-gradient(800px 500px at 50% -100px, #98ccff66, transparent 70%),
    linear-gradient(180deg, #0b62c2 0, #074590 50%, #052d64 100%);
}
.hero {
  background: linear-gradient(145deg, #258af0 0, #0961c9 58%, #074b9e 100%);
  box-shadow: 0 16px 40px #001f5833;
  border-bottom-color: #8cc4ff;
}
.hero::after {
  border-color: #ffffff38;
}
.seal {
  border-color: #b0d6ff;
  color: #e3f2ff;
}
.chips li {
  border-color: #ffffff38;
  background: #ffffff0d;
  color: #e6f3ff;
}
.logo {
  background: #e8f4ff;
}
.btn.ghost {
  border-color: #bcd7f5;
}
.arrow {
  color: #4696e7;
}
.mask {
  background: #001d49c9;
}
.sheet {
  background: #001d4980;
}
.release-info {
  text-align: center;
  font-size: 11px;
  color: #b7d7f9;
  margin: 18px 0 8px;
}
.web-entry {
  display: block;
  text-align: center;
  color: #e4f2ff;
  font-size: 13px;
  text-decoration: none;
  padding: 10px 12px 4px;
}
.web-entry span {
  margin-left: 5px;
}
.hero h1 {
  line-height: 1.45;
}
.cards {
  gap: 14px;
}
.btn:focus-visible,
.web-entry:focus-visible {
  outline: 3px solid #ffcd66;
  outline-offset: 4px;
}
[aria-disabled="true"] {
  opacity: 0.5;
  cursor: not-allowed;
}
@media (min-width: 900px) {
  html.show-ios .wrap {
    width: min(820px, 100%);
  }
}