:root {
  --paper: #f8f2e8;
  --paper-strong: #f3eadb;
  --paper-soft: #fcf8f1;
  --mist: #ebe2d4;
  --line: rgba(119, 87, 56, 0.18);
  --line-strong: rgba(119, 87, 56, 0.3);
  --tea: #8b6846;
  --tea-deep: #6f5036;
  --wood: #b49372;
  --ink: #43352a;
  --ink-soft: #6f6257;
  --success-bg: #f3ecdf;
  --shadow-soft: 0 8px 30px rgba(94, 70, 45, 0.05);
  --shadow-float: 0 10px 24px rgba(94, 70, 45, 0.08);
  --radius-card: 16px;
  --radius-pill: 999px;
  --font-display: "Songti SC", "STSong", "Noto Serif SC", serif;
  --font-body: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --chuer-bg: #f8f2e8;
  --chuer-primary: #8b6846;
  --chuer-primary-deep: #6f5036;
  --chuer-surface: rgba(255, 252, 247, 0.94);
  --chuer-line: rgba(119, 87, 56, 0.18);
  --chuer-text: #43352a;
}

html {
  color-scheme: light;
}

body {
  font-family: var(--font-body);
  color: var(--ink);
  background:
    radial-gradient(circle at top right, rgba(179, 147, 110, 0.12), transparent 32%),
    linear-gradient(180deg, #fcf8f1 0%, #f7f0e6 100%);
}

.paper-page {
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

.paper-page::before,
.paper-page::after {
  content: "";
  position: fixed;
  inset: auto;
  pointer-events: none;
  z-index: 0;
  opacity: 0.55;
}

.paper-page::before {
  top: -80px;
  right: -40px;
  width: 220px;
  height: 220px;
  background:
    radial-gradient(circle, rgba(139, 104, 70, 0.1) 0 12%, transparent 13% 100%);
  filter: blur(1px);
}

.paper-page::after {
  left: -24px;
  bottom: 12%;
  width: 180px;
  height: 180px;
  background:
    radial-gradient(circle at 30% 30%, rgba(139, 104, 70, 0.08), transparent 58%);
}

.page-shell {
  position: relative;
  z-index: 1;
  width: min(100%, 460px);
  margin: 0 auto;
  padding: 22px 18px 40px;
}

.hero-card,
.paper-card {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.76), rgba(255, 255, 255, 0.88)),
    linear-gradient(135deg, rgba(255, 255, 255, 0.45), rgba(243, 234, 219, 0.72));
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(6px);
}

.hero-card {
  overflow: hidden;
}

.display-cn {
  font-family: var(--font-display);
  letter-spacing: 0.04em;
}

.seal-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: var(--radius-pill);
  background: rgba(139, 104, 70, 0.08);
  border: 1px solid rgba(139, 104, 70, 0.16);
  color: var(--tea-deep);
  font-size: 12px;
  line-height: 1;
}

.seal-badge::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: radial-gradient(circle at 30% 30%, #c6a57f, var(--tea));
  box-shadow: 0 0 0 2px rgba(139, 104, 70, 0.12);
}

.ink-divider {
  position: relative;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(139, 104, 70, 0.22), transparent);
}

.ink-divider::after {
  content: "";
  position: absolute;
  inset: -3px auto auto 50%;
  width: 6px;
  height: 6px;
  margin-left: -3px;
  border-radius: 999px;
  background: rgba(139, 104, 70, 0.5);
}

.field-label {
  font-size: 14px;
  color: var(--ink);
  font-weight: 600;
  margin-bottom: 10px;
}

.field-hint {
  font-size: 12px;
  color: var(--ink-soft);
}

.paper-input,
.paper-textarea {
  width: 100%;
  border-radius: 18px;
  border: 1px solid rgba(119, 87, 56, 0.18);
  background: rgba(255, 252, 247, 0.94);
  color: var(--ink);
  transition: border-color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.paper-input {
  min-height: 52px;
  padding: 14px 16px;
}

.paper-textarea {
  min-height: 164px;
  padding: 16px;
  resize: vertical;
}

.paper-input::placeholder,
.paper-textarea::placeholder {
  color: #a09182;
}

.paper-input:focus,
.paper-textarea:focus {
  outline: none;
  border-color: rgba(139, 104, 70, 0.45);
  box-shadow: 0 0 0 4px rgba(139, 104, 70, 0.08);
}

.paper-button {
  min-height: 54px;
  border-radius: 18px;
  border: none;
  background: linear-gradient(180deg, #9a7754 0%, #7c5c3d 100%);
  color: #fffaf4;
  font-weight: 700;
  letter-spacing: 0.04em;
  box-shadow: 0 10px 20px rgba(124, 92, 61, 0.16);
  transition: transform 180ms ease, box-shadow 180ms ease, filter 180ms ease;
}

.paper-button:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 24px rgba(124, 92, 61, 0.18);
  filter: brightness(1.02);
}

.paper-button:active {
  transform: translateY(0);
}

.paper-button-secondary {
  min-height: 52px;
  border-radius: 18px;
  border: 1px solid rgba(119, 87, 56, 0.24);
  background: rgba(255, 252, 247, 0.85);
  color: var(--tea-deep);
  font-weight: 600;
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.paper-button-secondary:hover {
  transform: translateY(-1px);
  border-color: rgba(119, 87, 56, 0.34);
  box-shadow: 0 10px 20px rgba(94, 70, 45, 0.06);
}

.subtle-note {
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.7;
}

.thumb {
  position: relative;
  overflow: hidden;
  border-radius: 16px;
  border: 1px solid rgba(119, 87, 56, 0.16);
  background: linear-gradient(180deg, rgba(255,255,255,0.75), rgba(243,234,219,0.8));
  min-height: 92px;
}

.thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.thumb-delete {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 28px;
  height: 28px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.65);
  background: rgba(67, 53, 42, 0.72);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 14px;
}

.floating-tip {
  border-radius: 16px;
  border: 1px solid rgba(139, 104, 70, 0.18);
  background: rgba(255, 250, 243, 0.92);
  color: var(--tea-deep);
}

.ink-landscape {
  position: relative;
  overflow: hidden;
}

.ink-landscape::before,
.ink-landscape::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 80px;
  background-repeat: no-repeat;
  opacity: 0.26;
}

.ink-landscape::before {
  background-image:
    radial-gradient(60px 24px at 20% 70%, rgba(139, 104, 70, 0.2), transparent 70%),
    radial-gradient(90px 24px at 58% 75%, rgba(139, 104, 70, 0.16), transparent 70%),
    radial-gradient(68px 18px at 86% 72%, rgba(139, 104, 70, 0.18), transparent 70%);
}

.ink-landscape::after {
  height: 48px;
  bottom: 8px;
  background-image: linear-gradient(90deg, transparent 8%, rgba(139, 104, 70, 0.15) 24%, transparent 40%, rgba(139, 104, 70, 0.14) 64%, transparent 82%);
}

.success-ring {
  width: 88px;
  height: 88px;
  border-radius: 999px;
  background:
    radial-gradient(circle at 35% 30%, rgba(255,255,255,0.92), rgba(255,255,255,0.2) 38%, transparent 39%),
    linear-gradient(180deg, rgba(198,165,127,0.3), rgba(139,104,70,0.16));
  border: 1px solid rgba(139, 104, 70, 0.18);
  display: grid;
  place-items: center;
  box-shadow: 0 10px 24px rgba(139, 104, 70, 0.08);
}

.qr-frame {
  border-radius: 22px;
  border: 1px solid rgba(119, 87, 56, 0.16);
  background: linear-gradient(180deg, rgba(255,255,255,0.92), rgba(248,242,232,0.92));
  box-shadow: var(--shadow-soft);
}

.paper-texture {
  background-image:
    linear-gradient(120deg, rgba(255,255,255,0.15), transparent 30%),
    radial-gradient(circle at 20% 20%, rgba(139, 104, 70, 0.03), transparent 24%),
    radial-gradient(circle at 80% 30%, rgba(139, 104, 70, 0.04), transparent 18%),
    radial-gradient(circle at 50% 80%, rgba(139, 104, 70, 0.035), transparent 20%);
}

.fade-in {
  animation: fadeInUp 520ms ease both;
}

.flash-message {
  margin-top: 16px;
  border-radius: 16px;
  padding: 14px 16px;
  border: 1px solid rgba(139, 104, 70, 0.16);
  background: rgba(255, 250, 243, 0.94);
  font-size: 14px;
  line-height: 1.7;
}

.flash-message.error {
  color: #9d5d49;
  border-color: rgba(157, 93, 73, 0.18);
}

.flash-message.success {
  color: #2f7d5d;
  border-color: rgba(47, 125, 93, 0.18);
}

.context-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255, 250, 243, 0.92);
  border: 1px solid rgba(139, 104, 70, 0.16);
  color: var(--tea-deep);
  font-size: 13px;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (min-width: 768px) {
  .page-shell {
    padding-top: 28px;
    padding-bottom: 60px;
  }
}