:root {
  --ink: #1c2b3a;
  --ink-soft: #334155;
  --cream: #f6efe4;
  --paper: #f3e6d0;
  --gold: #c4a574;
  --wax: #a33b2b;
  --white: #fffaf3;
  --line: rgba(28, 43, 58, 0.12);
  --shadow: 0 18px 50px rgba(28, 43, 58, 0.22);
  --serif: "Noto Serif TC", "Songti TC", serif;
  --sans: "Noto Sans TC", "PingFang TC", "Heiti TC", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--cream);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.7;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
}

h1,
h2,
h3 {
  font-family: var(--serif);
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1.25;
}

h1 {
  font-size: clamp(2.4rem, 10vw, 3.4rem);
  margin: 0 0 0.3em;
}

h2 {
  font-size: 1.7rem;
  margin: 0 0 0.6em;
}

h3 {
  font-size: 1.4rem;
  margin: 0 0 0.4em;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.85rem 1.1rem;
  background: rgba(246, 239, 228, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.brand {
  font-family: var(--serif);
  text-decoration: none;
  letter-spacing: 0.18em;
  font-size: 0.92rem;
}

.nav {
  display: flex;
  gap: 0.9rem;
  font-size: 0.82rem;
}

.nav a {
  text-decoration: none;
  color: var(--ink-soft);
}

.inapp-banner {
  background: var(--ink);
  color: var(--cream);
  font-size: 0.82rem;
  padding: 0.7rem 1rem;
  text-align: center;
}

.inapp-banner a {
  color: var(--gold);
}

.hero {
  position: relative;
  min-height: 88vh;
  display: grid;
  place-items: end stretch;
  overflow: hidden;
}

.hero-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(28, 43, 58, 0.82) 12%,
    rgba(28, 43, 58, 0.15) 55%,
    rgba(28, 43, 58, 0.2)
  );
}

.hero-copy {
  position: relative;
  padding: 2.4rem 1.25rem 3rem;
  color: var(--white);
}

.eyebrow,
.section-kicker {
  font-size: 0.72rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  margin: 0 0 0.6rem;
  color: var(--gold);
}

.lede {
  margin: 0 0 1.4rem;
  font-size: 1.05rem;
}

.btn {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 2.8rem;
  padding: 0.55rem 1.15rem;
  border-radius: 999px;
  border: 1px solid transparent;
  text-decoration: none;
  font-size: 0.92rem;
  cursor: pointer;
  background: none;
  font-family: inherit;
}

.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.45;
  pointer-events: none;
}

.btn-solid {
  background: var(--white);
  color: var(--ink);
}

.btn-ghost {
  border-color: var(--line);
  background: transparent;
}

.btn-accent {
  background: var(--wax);
  color: var(--white);
}

.btn-block {
  width: 100%;
}

.maker,
.campaign,
.book,
.buy {
  padding: 3rem 1.25rem;
  max-width: 42rem;
  margin: 0 auto;
}

.example {
  margin: 1.2rem 0 0;
  text-align: center;
}

.example img {
  width: min(42%, 9.5rem);
  margin: 0 auto;
  box-shadow: var(--shadow);
}

.example figcaption {
  margin-top: 0.5rem;
  font-size: 0.78rem;
  color: var(--ink-soft);
}

.maker-note {
  font-size: 0.82rem;
  text-align: center;
}

.stage-wrap {
  display: flex;
  justify-content: center;
  margin: 1.6rem 0 1.2rem;
}

.stage {
  position: relative;
  width: min(100%, 22rem);
  aspect-ratio: 1080 / 1526;
  overflow: hidden;
  background: #d7c7b0;
  box-shadow: var(--shadow);
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
}

.stage canvas,
.stage .frame {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.stage .frame {
  pointer-events: none;
}

.stage-hint {
  position: absolute;
  inset: 22% 12% 28%;
  display: grid;
  place-items: center;
  text-align: center;
  color: var(--ink);
  font-size: 0.92rem;
  pointer-events: none;
}

.stage.is-ready .stage-hint {
  display: none;
}

.maker-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.65rem;
}

.maker-actions #exportBtn {
  grid-column: 1 / -1;
}

.stage.is-ready {
  cursor: grab;
}

.stage.is-ready:active {
  cursor: grabbing;
}

.file-btn {
  cursor: pointer;
}

.campaign .bleed-photo {
  width: calc(100% + 2.5rem);
  max-width: none;
  margin: 0 -1.25rem 1.3rem;
  height: 14rem;
  object-fit: cover;
}

.facts {
  list-style: none;
  padding: 0;
  margin: 1.2rem 0;
  border-top: 1px solid var(--line);
}

.facts li {
  display: flex;
  gap: 1rem;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--line);
}

.facts span {
  flex: 0 0 3.2rem;
  color: var(--gold);
  font-size: 0.82rem;
  letter-spacing: 0.12em;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  border: 1px solid var(--ink);
  background: transparent;
  color: var(--ink);
  border-radius: 999px;
  padding: 0.35rem 0.8rem;
  font-family: inherit;
  cursor: pointer;
}

.copy-status {
  font-size: 0.82rem;
  color: var(--wax);
}

.book-grid {
  display: grid;
  gap: 1.2rem;
}

.author img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
}

.author figcaption {
  margin-top: 0.4rem;
  font-family: var(--serif);
  letter-spacing: 0.16em;
}

.meta {
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.spec {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.7rem 1rem;
  margin: 1.2rem 0 1.6rem;
}

.spec div {
  border-top: 1px solid var(--line);
  padding-top: 0.45rem;
}

dt {
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--gold);
}

dd {
  margin: 0;
}

.buy-list {
  display: grid;
  gap: 0.6rem;
  margin: 1rem 0 1.2rem;
}

.site-footer {
  padding: 2rem 1.25rem 3rem;
  text-align: center;
  color: var(--ink-soft);
  font-size: 0.82rem;
}

.result-dialog {
  border: 0;
  padding: 0;
  background: transparent;
  max-width: 22rem;
}

.result-dialog::backdrop {
  background: rgba(28, 43, 58, 0.62);
}

.result-card {
  background: var(--cream);
  padding: 1.2rem;
  display: grid;
  gap: 0.8rem;
}

.result-card img {
  width: 100%;
  box-shadow: var(--shadow);
}

.result-hint:empty {
  display: none;
}

.result-actions {
  display: grid;
  gap: 0.5rem;
}

@media (min-width: 720px) {
  .book-grid {
    grid-template-columns: 220px 1fr;
    align-items: start;
  }

  .maker-actions {
    grid-template-columns: repeat(4, max-content);
    justify-content: center;
  }

  .maker-actions #exportBtn {
    grid-column: auto;
  }
}