:root {
  --bg: #f6f5f2;
  --surface: #ffffff;
  --ink: #1c1c1c;
  --muted: #6b6b6b;
  --line: #e6e2d8;
  --accent: #9a7b4f;          /* 克制的古铜点缀 */
  --accent-soft: rgba(154, 123, 79, .08);
  --serif: "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --sans: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
}

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

body {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--bg);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

.hidden { display: none !important; }

/* ===== 免责声明门禁 ===== */
.disclaimer {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(246, 245, 242, .88);
  backdrop-filter: blur(8px);
}
.disclaimer-card {
  width: min(460px, 100%);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 48px 42px;
  text-align: center;
}
.eyebrow {
  display: block;
  font-size: 11px;
  letter-spacing: 3px;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 16px;
}
.disclaimer-title {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 26px;
  letter-spacing: 6px;
  margin-bottom: 20px;
}
.disclaimer-text {
  font-size: 14.5px;
  line-height: 2;
  color: var(--muted);
  text-align: justify;
  margin-bottom: 26px;
}
.disclaimer-list {
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--muted);
  text-align: left;
  margin: 0 0 26px;
  padding-left: 22px;
}
.disclaimer-list li { margin-bottom: 9px; }
.disclaimer-list li::marker { color: var(--accent); }
.agree {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 13.5px;
  color: var(--muted);
  margin-bottom: 24px;
  cursor: pointer;
  user-select: none;
}
.agree input { width: 15px; height: 15px; accent-color: var(--accent); }

/* ===== 按钮 ===== */
.btn {
  font-family: var(--sans);
  font-size: 14.5px;
  font-weight: 500;
  letter-spacing: 1px;
  border-radius: 3px;
  padding: 13px 22px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: .15s;
}
.btn-primary { background: var(--ink); color: #fff; }
.btn-primary:hover { background: #000; }
.btn-primary:disabled { background: #cfccc4; cursor: not-allowed; }
.btn-outline { background: transparent; color: var(--accent); border-color: var(--accent); }
.btn-outline:hover { background: var(--accent-soft); }
.btn-ghost { background: transparent; color: var(--muted); border-color: var(--line); }
.btn-ghost:hover { color: var(--ink); border-color: var(--ink); }
.btn-block { width: 100%; margin-top: 14px; }

/* ===== 主体 ===== */
.app { min-height: 100vh; display: flex; flex-direction: column; }

.hero { text-align: center; padding: 84px 20px 44px; }
.hero-title {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(30px, 5vw, 46px);
  letter-spacing: 8px;
  margin-bottom: 16px;
}
.hero-sub { color: var(--muted); font-size: 15px; }
.stats {
  display: inline-block;
  margin-top: 24px;
  font-size: 13px;
  letter-spacing: 1px;
  color: var(--accent);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 22px;
}

.workspace {
  width: min(1040px, 100%);
  margin: 0 auto;
  padding: 10px 20px 64px;
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 24px;
}
@media (max-width: 820px) {
  .workspace { grid-template-columns: 1fr; }
}

.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 42px 38px;
}
.panel-title {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 2px;
  margin: 6px 0 24px;
}
.input {
  width: 100%;
  padding: 14px 14px;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: #fcfcfb;
  font-size: 16px;
  font-family: var(--sans);
  color: var(--ink);
  outline: none;
  transition: .15s;
}
.input:focus { border-color: var(--accent); }
.hint { font-size: 12.5px; color: var(--muted); margin-top: 12px; line-height: 1.7; }

.result { margin-top: 24px; padding-top: 24px; border-top: 1px solid var(--line); }
.result-ok { color: var(--accent); font-size: 14px; font-weight: 500; }
.result-meta { font-size: 12.5px; color: var(--muted); margin: 10px 0 4px; line-height: 1.8; }

/* ===== 预览 ===== */
.preview { display: flex; flex-direction: column; }
.canvas-wrap {
  position: relative;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fafaf8;
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 24px;
  min-height: 440px;
}
#cardPreview {
  max-width: 100%;
  max-height: 74vh;      /* 竖版卡面：限高，避免把面板撑出一屏 */
  width: auto;
  height: auto;
  box-shadow: 0 10px 40px rgba(0, 0, 0, .08);
}
.empty-tip {
  position: absolute;
  text-align: center;
  color: #bdb9af;
  font-size: 15px;
  line-height: 2;
  letter-spacing: 2px;
}

/* ===== Toast ===== */
.toast {
  position: fixed;
  left: 50%;
  bottom: 36px;
  transform: translateX(-50%);
  background: var(--ink);
  color: #fff;
  padding: 13px 24px;
  border-radius: 3px;
  font-size: 14px;
  z-index: 2000;
}

/* ===== 移动端适配（手机为主） ===== */
@media (max-width: 640px) {
  body { font-size: 15px; }

  .hero { padding: 52px 16px 28px; }
  .hero-title {
    letter-spacing: 4px;
    font-size: clamp(26px, 7vw, 34px);
  }
  .hero-sub { font-size: 14px; padding: 0 6px; }

  .workspace { padding: 8px 16px 48px; gap: 18px; }
  .panel { padding: 30px 22px; }
  .panel-title { font-size: 18px; margin: 6px 0 20px; }

  .input { padding: 15px 14px; font-size: 16px; }  /* 16px 防止 iOS 聚焦自动放大 */
  .btn { padding: 15px 20px; font-size: 15px; }
  .agree input { width: 18px; height: 18px; }

  .disclaimer-card { padding: 40px 24px; }
  .disclaimer-text { font-size: 14px; }
  .agree { font-size: 14px; }

  /* 纪念卡预览：竖版按宽度铺满，长图随页面纵向滚动；下载仍是全分辨率 PNG */
  .canvas-wrap {
    padding: 16px 14px;
    min-height: 0;
  }
  .canvas-wrap #cardPreview {
    max-width: 100%;
    width: 100%;
    max-height: none;
  }
  .empty-tip { font-size: 14px; padding: 0 16px; }
}