:root {
  --bg: #f4f6f8;
  --ink: #1c2430;
  --muted: #5c6778;
  --card: #ffffff;
  --line: rgba(28, 36, 48, 0.14);
  --green: #0f766e;
  --green-soft: #e7f5f3;
  --gold: #0f766e;
  --shadow: 0 18px 40px rgba(28, 36, 48, 0.08);
  --sans: "Outfit", "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Noto Sans TC", "Noto Sans JP", "Noto Sans KR", "Noto Sans Arabic", "Nirmala UI", "Leelawadee UI", "Malgun Gothic", sans-serif;
  --serif: "Fraunces", "Iowan Old Style", Palatino, "Palatino Linotype", "Songti SC", "PMingLiU", "Noto Serif SC", serif;
  --dock: 84px;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(circle at 0% 0%, #e7eef2 0, transparent 38%),
    var(--bg);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.5;
}
button, input { font: inherit; color: inherit; }
button { cursor: pointer; }
.wrap {
  width: min(1040px, calc(100% - 32px));
  margin: 0 auto;
  padding: 20px 0 calc(var(--dock) + env(safe-area-inset-bottom) + 28px);
}
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 22px;
}
.brand {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-weight: 600;
  letter-spacing: 0.08em;
  font-size: 13px;
}
.brand b { font-weight: 600; letter-spacing: 0.14em; }
.brand span { color: var(--muted); letter-spacing: 0.16em; font-weight: 500; }
.lang-btn {
  border: 1px solid var(--line);
  background: transparent;
  border-radius: 999px;
  min-height: 40px;
  padding: 0 14px;
}
.layout {
  display: grid;
  gap: 22px;
}
.kicker {
  margin: 0 0 8px;
  color: var(--gold);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
h1 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(40px, 10vw, 68px);
  font-weight: 560;
  letter-spacing: -0.035em;
  line-height: 0.96;
}
.front {
  background: linear-gradient(165deg, #243246 0%, #1c2430 72%);
  color: #f4f7fb;
  border-radius: 22px;
  padding: 26px 20px 18px;
}
.front h1 { color: #f4f7fb; }
.subhead {
  margin: 8px 0 0;
  max-width: 16em;
  font-family: var(--serif);
  font-size: clamp(28px, 7vw, 44px);
  font-weight: 650;
  letter-spacing: -0.03em;
  line-height: 1.05;
  color: #8fe0d2;
}
.intro-card {
  margin-top: 22px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  padding: 16px 16px 14px;
}
.intro-card h2 {
  margin: 0 0 10px;
  font-size: 18px;
  letter-spacing: -0.02em;
}
.intro-card p {
  margin: 0;
  color: #d5dde8;
  font-size: 15px;
  line-height: 1.7;
}
.intro-card p + p { margin-top: 12px; }
.steps {
  display: flex;
  gap: 8px;
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
}
.steps li {
  flex: 1;
  min-width: 0;
  border: 1px solid transparent;
  border-radius: 12px;
  padding: 10px 10px 8px;
  background: #ffffff;
}
.steps li.is-now { border-color: var(--green); background: var(--card); }
.steps li.is-done { background: var(--green-soft); }
.steps small {
  display: block;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.08em;
}
.steps strong { display: block; font-size: 14px; font-weight: 600; }
.ticket {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow);
  overflow: hidden;
}
.ticket-top, .ticket-body { padding: 18px 18px 16px; }
.ticket-top {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: flex-start;
  border-bottom: 1px dashed rgba(28, 36, 48, 0.16);
}
.ticket-top h2 { margin: 0; font-size: 20px; letter-spacing: -0.02em; }
.ticket-top p { margin: 6px 0 0; color: var(--muted); font-size: 14px; }
.amount {
  flex: none;
  border: 1px solid var(--green);
  color: var(--green);
  border-radius: 999px;
  padding: 6px 10px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
}
.link-box {
  margin-top: 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px;
  background: #fff;
  word-break: break-all;
}
.link-box span {
  display: block;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.link-box code {
  display: block;
  margin-top: 4px;
  font-family: ui-monospace, "Cascadia Mono", Consolas, monospace;
  font-size: 14px;
}
.preview {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 14px;
}
.pay {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px dashed rgba(28, 36, 48, 0.16);
}
.pay h3 { margin: 0 0 6px; font-size: 16px; }
.pay p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.5; }
.pay-nets { display: flex; gap: 8px; margin: 12px 0; }
.pay-nets button {
  flex: 1;
  min-height: 40px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #fff;
}
.pay-nets button.is-on { border-color: var(--green); background: var(--green-soft); color: var(--green); font-weight: 600; }
.pay label { display: block; margin: 0 0 6px; font-size: 13px; font-weight: 600; }
.pay input {
  width: 100%;
  min-height: 48px;
  border-radius: 12px;
  border: 1px solid var(--line);
  padding: 0 12px;
  background: #fff;
}
.pay-hint { margin-top: 6px; font-size: 12px; }
.pay .btn { width: 100%; margin-top: 10px; }
.pay-msg { margin-top: 8px; min-height: 1.2em; font-size: 13px; }
.pay-msg.is-ok { color: var(--green); }
.pay-msg.is-bad { color: #9f3d3d; }
.ticket-body > .pay:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}
.pay-need {
  margin: 12px 0 0;
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
}
.actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.btn {
  appearance: none;
  border-radius: 12px;
  min-height: 48px;
  padding: 0 16px;
  border: 1px solid transparent;
  background: var(--green);
  color: #f4fffc;
  font-weight: 600;
}
.btn.secondary { background: transparent; color: var(--ink); border-color: var(--line); }
.btn:disabled { opacity: 0.55; cursor: default; }
.btn:focus-visible, .lang-btn:focus-visible, .lang-list button:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 2px;
}
.reward {
  display: grid;
  justify-items: center;
  text-align: center;
  padding: 8px 8px 4px;
}
.stamp {
  width: 148px;
  height: 148px;
  border: 3px solid var(--green);
  color: var(--green);
  border-radius: 50%;
  display: grid;
  place-items: center;
  transform: rotate(-8deg);
  margin-bottom: 8px;
}
.stamp div { display: grid; justify-items: center; }
.stamp b {
  font-family: var(--serif);
  font-size: 34px;
  font-weight: 650;
  letter-spacing: -0.04em;
  line-height: 0.9;
}
.link-box code { user-select: all; }
.stamp span { font-size: 13px; letter-spacing: 0.14em; font-weight: 600; }
.meta {
  width: 100%;
  margin-top: 8px;
  display: grid;
  gap: 6px;
  text-align: left;
  font-size: 13px;
  color: var(--muted);
}
[dir="rtl"] .meta { text-align: right; }
.meta div {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  border-top: 1px solid var(--line);
  padding-top: 6px;
}
.ghost {
  margin-top: 12px;
  border: 0;
  background: transparent;
  color: var(--muted);
  text-decoration: underline;
  text-underline-offset: 3px;
  min-height: 40px;
}
.more { margin-top: 28px; display: grid; gap: 22px; }
.guide { display: grid; gap: 8px; }
.guide article {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px;
}
.guide .tag {
  display: block;
  color: var(--gold);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
}
.guide h3 { margin: 6px 0; font-size: 18px; }
.guide p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.55; }
.terms { margin: 14px 0 0; padding: 0; list-style: none; display: grid; }
.terms li {
  display: grid;
  gap: 4px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed rgba(28, 36, 48, 0.12);
}
.terms strong { font-size: 14px; font-weight: 650; }
.terms span { color: var(--muted); font-size: 14px; line-height: 1.55; }
.guide .btn { margin-top: 12px; }
.facts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
.facts article, .cards article, .rules li, details {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
}
.facts article { padding: 14px 12px; }
.facts b {
  display: block;
  font-family: var(--serif);
  font-size: clamp(22px, 6vw, 32px);
  font-weight: 560;
  letter-spacing: -0.03em;
  line-height: 1;
}
.facts span { display: block; margin-top: 6px; color: var(--muted); font-size: 13px; }
.block h2 { margin: 0 0 10px; font-size: 22px; letter-spacing: -0.03em; }
.block > p { margin: 0; color: var(--muted); }
.cards { display: grid; gap: 8px; }
.cards article { padding: 16px; }
.cards h3 { margin: 0 0 6px; font-size: 16px; }
.cards p, details p { margin: 0; color: var(--muted); font-size: 14px; }
.rules { counter-reset: rule; margin: 0; padding: 0; list-style: none; display: grid; gap: 8px; }
.rules li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 10px;
  align-items: start;
  padding: 12px 14px;
}
.rules li::before {
  counter-increment: rule;
  content: counter(rule, decimal-leading-zero);
  color: var(--gold);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  padding-top: 3px;
}
details { padding: 12px 14px; }
details + details { margin-top: 8px; }
summary { cursor: pointer; font-weight: 600; }
details p { margin-top: 8px; }
.note {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 13px;
}
.dock {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 5;
  padding: 10px 16px calc(10px + env(safe-area-inset-bottom));
  background: rgba(244, 246, 248, 0.94);
  border-top: 1px solid var(--line);
  backdrop-filter: blur(8px);
}
.dock .btn { width: 100%; }
@media (max-width: 859px) {
  .actions { display: none; }
}
.toast {
  position: fixed;
  left: 50%;
  bottom: calc(var(--dock) + 8px);
  transform: translateX(-50%) translateY(8px);
  background: var(--ink);
  color: #f4f7fb;
  border-radius: 999px;
  padding: 10px 14px;
  font-size: 14px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
  z-index: 6;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
dialog {
  width: min(440px, calc(100% - 24px));
  max-height: min(72vh, 640px);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 0;
  background: var(--card);
  color: var(--ink);
}
dialog::backdrop { background: rgba(28, 36, 48, 0.46); }
.verify-body { padding: 4px 16px 18px; }
.verify-body > p { margin: 0 0 12px; color: var(--muted); font-size: 14px; }
.verify-prompt {
  margin: 0 0 10px;
  font-size: 22px;
  font-weight: 650;
  letter-spacing: 0.06em;
  text-align: center;
}
.verify-board {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin: 0 0 12px;
}
.verify-tile {
  min-height: 48px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #fff;
  font-size: 18px;
  font-weight: 650;
}
.verify-tile.is-on {
  border-color: var(--green);
  background: var(--green-soft);
  color: var(--green);
}
.slider.is-locked { opacity: 0.45; }
.slider.is-locked .slider-thumb { cursor: default; }
.slider {
  position: relative;
  height: 48px;
  border-radius: 999px;
  background: #e7eef2;
  border: 1px solid var(--line);
  overflow: hidden;
  touch-action: none;
  user-select: none;
}
.slider-fill {
  position: absolute;
  inset-inline-start: 0;
  top: 0;
  bottom: 0;
  width: 0;
  background: #cfeae4;
}
.slider.is-done .slider-fill { width: 100%; background: var(--green); }
.slider-label {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding-inline: 54px;
  font-size: 14px;
  color: var(--muted);
  pointer-events: none;
  text-align: center;
}
.slider.is-done .slider-label { color: #f4fffc; }
.slider-thumb {
  position: absolute;
  inset-inline-start: 3px;
  top: 3px;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: #fff;
  cursor: grab;
  padding: 0;
}
.slider-thumb:active { cursor: grabbing; }
.verify-msg { min-height: 1.2em; margin: 8px 0 0; font-size: 13px; color: #9f3d3d; }
.dialog-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 14px 8px;
}
.dialog-head h2 { margin: 0; font-size: 18px; }
.lang-list {
  list-style: none;
  margin: 0;
  padding: 0 8px 12px;
  overflow: auto;
  max-height: 54vh;
}
.lang-list button {
  width: 100%;
  text-align: start;
  border: 0;
  background: transparent;
  border-radius: 10px;
  min-height: 44px;
  padding: 8px 10px;
}
.lang-list button[aria-current="true"] { background: var(--green-soft); font-weight: 600; }
.err { color: #9f3d3d; font-size: 14px; margin: 8px 0 0; }
@media (min-width: 860px) {
  .wrap { padding-top: 36px; padding-bottom: 48px; }
  .layout { grid-template-columns: 1.15fr 0.85fr; align-items: start; gap: 40px; }
  .ticket { position: sticky; top: 24px; }
  .dock { display: none; }
  .toast { bottom: 24px; }
  .actions .btn.primary { min-width: 180px; }
  .cards { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .guide { grid-template-columns: 1fr 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  .toast { transition: none; }
  .stamp { transform: none; }
}