:root {
  --ink: #171512;
  --muted: #63594d;
  --paper: #f8f1e7;
  --card: #fffaf1;
  --line: rgba(34, 28, 20, .13);
  --gold: #d5a14c;
  --gold-2: #ffe3a1;
  --deep: #101820;
  --shadow: 0 28px 70px rgba(33, 24, 16, .14);
  font-family: "Noto Sans TC", "Microsoft JhengHei UI", system-ui, sans-serif;
}

* { box-sizing: border-box; }

html, body { margin: 0; overflow-x: hidden; }

body {
  color: var(--ink);
  background: linear-gradient(180deg, #0d1319 0, #1b1519 520px, var(--paper) 850px);
}

a { color: inherit; text-decoration: none; }

.qr-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  min-height: 76px;
  padding: 12px max(22px, calc((100vw - 1180px) / 2));
  color: #fff7e8;
  background: rgba(11, 16, 21, .88);
  border-bottom: 1px solid rgba(255, 227, 161, .18);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}

.brand img {
  width: 148px;
  height: 42px;
  object-fit: contain;
  padding: 3px 8px;
  border: 1px solid rgba(255, 227, 161, .22);
  border-radius: 12px;
  background: #0b0f14;
}

.brand strong,
.brand small { display: block; line-height: 1.1; }
.brand strong { font-size: 20px; font-weight: 950; }
.brand small { margin-top: 3px; color: #d8be83; font-size: 12px; font-weight: 800; }

.qr-nav nav {
  display: flex;
  gap: 20px;
  color: rgba(255, 247, 232, .78);
  font-size: 14px;
  font-weight: 850;
}

main,
footer {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.hero {
  min-height: 620px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 420px);
  gap: clamp(28px, 5vw, 68px);
  align-items: center;
  color: #fff7e8;
  padding: 70px 0 64px;
}

.kicker {
  margin: 0 0 12px;
  color: var(--gold-2);
  font-size: 12px;
  font-weight: 950;
  letter-spacing: .08em;
}

h1, h2, h3, p { margin-top: 0; }

h1,
h2 {
  margin-bottom: 14px;
  font-family: "Noto Serif TC", "Noto Sans TC", serif;
  font-weight: 900;
  letter-spacing: 0;
}

h1 {
  max-width: 9em;
  font-size: clamp(36px, 4.6vw, 62px);
  line-height: 1.08;
}

.lead {
  max-width: 34em;
  margin: 0;
  color: rgba(255, 247, 232, .82);
  font-size: clamp(16px, 1.2vw, 19px);
  line-height: 1.62;
  font-weight: 780;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 20px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 950;
}

.btn.primary {
  color: #111820;
  background: linear-gradient(135deg, #ffe8a8, #d39a42);
  box-shadow: 0 18px 42px rgba(0, 0, 0, .24);
}

.btn.secondary {
  color: #fff7e8;
  border: 1px solid rgba(255, 227, 161, .30);
  background: rgba(255, 255, 255, .08);
}

.hero-qr {
  display: grid;
  justify-items: center;
  gap: 12px;
  padding: 26px;
  border: 1px solid rgba(255, 227, 161, .28);
  border-radius: 30px;
  background: rgba(16, 24, 32, .78);
  box-shadow: 0 32px 88px rgba(0, 0, 0, .36);
}

.hero-qr strong {
  font-size: 22px;
}

.hero-qr span,
footer span {
  color: rgba(255, 247, 232, .72);
  font-size: 13px;
  font-weight: 700;
}

.qr-frame {
  width: min(250px, 74vw);
  aspect-ratio: 1;
  border: 14px solid #fffaf1;
  border-radius: 24px;
  background:
    linear-gradient(90deg, #111820 12px, transparent 12px) 0 0 / 32px 32px,
    linear-gradient(#111820 12px, transparent 12px) 0 0 / 32px 32px,
    radial-gradient(circle at 24% 24%, #111820 0 36px, transparent 37px),
    radial-gradient(circle at 76% 24%, #111820 0 36px, transparent 37px),
    radial-gradient(circle at 24% 76%, #111820 0 36px, transparent 37px),
    #fffaf1;
  box-shadow: inset 0 0 0 10px #fffaf1, 0 18px 40px rgba(0, 0, 0, .22);
}

.qr-frame.small {
  width: 142px;
  border-width: 10px;
  border-radius: 18px;
}

.section,
.flow {
  margin-top: 76px;
}

.section-head {
  max-width: 560px;
  margin-bottom: 24px;
}

.section-head h2,
.flow-copy h2 {
  color: #171512;
  font-size: clamp(24px, 2.7vw, 34px);
  line-height: 1.18;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.qr-card {
  min-width: 0;
  display: grid;
  align-content: space-between;
  justify-items: start;
  gap: 18px;
  min-height: 360px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background:
    linear-gradient(180deg, rgba(255, 250, 241, .96), rgba(245, 220, 156, .22));
  box-shadow: 0 18px 44px rgba(33, 24, 16, .08);
}

.qr-card.wide {
  grid-column: span 2;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  min-height: 250px;
}

.qr-copy span {
  color: #a87122;
  font-size: 12px;
  font-weight: 950;
}

.qr-copy h3 {
  max-width: 12em;
  margin: 8px 0 10px;
  color: #171512;
  font-size: clamp(22px, 2.3vw, 30px);
  line-height: 1.2;
  font-weight: 950;
}

.qr-copy p {
  max-width: 18em;
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
  font-weight: 800;
}

.qr-card small {
  color: #8c641f;
  font-size: 13px;
  font-weight: 950;
}

.flow {
  display: grid;
  grid-template-columns: minmax(280px, .86fr) minmax(0, 1fr);
  gap: 28px;
}

.photo {
  min-height: 430px;
  border-radius: 30px;
  background:
    linear-gradient(180deg, rgba(11, 16, 21, .08), rgba(11, 16, 21, .58)),
    url("../../assets/event-qr-scan-real.jpg") center / cover no-repeat;
  box-shadow: var(--shadow);
}

.flow-copy {
  display: grid;
  align-content: center;
  padding: clamp(22px, 4vw, 42px);
  border: 1px solid var(--line);
  border-radius: 30px;
  background: rgba(255, 250, 241, .88);
}

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

.flow-list article {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  align-items: center;
  padding: 16px;
  border-radius: 18px;
  background: #fffdf8;
  border: 1px solid var(--line);
}

.flow-list span {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  color: #111820;
  background: linear-gradient(135deg, #ffe8a8, #d39a42);
  font-weight: 950;
}

.flow-list strong {
  display: block;
  color: #171512;
  font-size: 18px;
}

.flow-list p {
  grid-column: 2;
  margin: -8px 0 0;
  color: var(--muted);
  line-height: 1.5;
  font-weight: 700;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 36px 0 52px;
  color: #655b50;
  font-size: 14px;
}

footer strong {
  color: #171512;
}

@media print {
  .qr-nav,
  .hero,
  .flow,
  footer {
    display: none;
  }

  body {
    background: #fff;
  }

  main {
    width: 100%;
  }

  .section {
    margin: 0;
  }

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

  .qr-card {
    break-inside: avoid;
    box-shadow: none;
  }
}

@media (max-width: 1040px) {
  .card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 860px) {
  .qr-nav {
    align-items: flex-start;
    flex-direction: column;
  }

  .qr-nav nav {
    flex-wrap: wrap;
    gap: 12px;
  }

  .hero,
  .flow {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 44px;
  }
}

@media (max-width: 560px) {
  main,
  footer {
    width: min(100% - 24px, 1180px);
  }

  .brand img {
    width: 118px;
    height: 36px;
  }

  .brand small {
    display: none;
  }

  h1 {
    font-size: clamp(32px, 10vw, 42px);
  }

  .lead {
    font-size: 15.5px;
  }

  .cta-row,
  .card-grid,
  .qr-card.wide {
    display: grid;
    grid-template-columns: 1fr;
  }

  .btn {
    width: 100%;
  }

  .qr-card,
  .qr-card.wide {
    min-height: 0;
  }

  .photo {
    min-height: 300px;
  }

  footer {
    display: grid;
  }
}