:root {
  --bg: #f4f7fb;
  --card: #ffffff;
  --border: #e3e8ef;
  --text: #1f2937;
  --muted: #64748b;
  --accent: #0f766e;
  --accent-2: #14b8a6;
  --shadow: 0 1px 2px rgba(15, 23, 42, .04), 0 8px 24px rgba(15, 23, 42, .06);
}

* { box-sizing: border-box; }

/* 关键：下面的 .modal / .btn 等都设了 display，会盖掉 hidden 属性自带的 display:none，
   不兜底的话弹窗遮罩会一直盖在页面上、整页点不动。 */
[hidden] { display: none !important; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Microsoft YaHei', 'PingFang SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 15px;
  line-height: 1.65;
}

.wrap {
  width: min(1180px, 100% - 40px);
  margin: 0 auto;
}

/* ---------------- 头部 ---------------- */
.site-header {
  background: linear-gradient(120deg, #0b5f58 0%, #14b8a6 100%);
  color: #fff;
  padding: 34px 0 30px;
}

.header-inner {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.brand h1 {
  margin: 0;
  font-size: 27px;
  font-weight: 600;
  letter-spacing: .5px;
}

.subtitle {
  margin: 6px 0 0;
  font-size: 14px;
  color: rgba(255, 255, 255, .84);
}

.brand-link {
  color: rgba(255, 255, 255, .9);
  text-decoration: none;
  font-size: 13px;
  font-family: inherit;
  /* 必须显式透明：<button> 默认是浅色背景，会把白色文字盖成看不见 */
  background: transparent;
  cursor: pointer;
  border: 1px solid rgba(255, 255, 255, .38);
  border-radius: 999px;
  padding: 6px 15px;
}

.brand-link:hover { background: rgba(255, 255, 255, .14); }

/* ---------------- 工具栏 ---------------- */
.toolbar {
  margin: 26px 0 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.search {
  width: 100%;
  max-width: 420px;
  padding: 11px 15px;
  font-size: 14px;
  font-family: inherit;
  color: var(--text);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  outline: none;
}

.search:focus { border-color: var(--accent-2); box-shadow: 0 0 0 3px rgba(20, 184, 166, .14); }

.chips { display: flex; flex-wrap: wrap; gap: 8px; }

.chip {
  padding: 6px 14px;
  font-size: 13px;
  font-family: inherit;
  color: var(--muted);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 999px;
  cursor: pointer;
  transition: .15s;
}

.chip:hover { border-color: #9edfd8; color: var(--accent); }

.chip.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* ---------------- 卡片 ---------------- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(276px, 1fr));
  gap: 16px;
  padding-bottom: 40px;
}

.card {
  display: flex;
  flex-direction: column;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px;
  cursor: pointer;
  transition: transform .16s, box-shadow .16s, border-color .16s;
}

.card:hover {
  transform: translateY(-3px);
  border-color: #cfe9e5;
  box-shadow: var(--shadow);
}

.card-head { display: flex; align-items: center; gap: 13px; }

.card-icon {
  width: 52px;
  height: 52px;
  flex: 0 0 52px;
  border-radius: 12px;
  object-fit: contain;
  background: #f1f5f9;
}

.card-icon.is-letter {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}

.card-name {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.35;
}

.card-meta {
  margin-top: 4px;
  display: flex;
  align-items: center;
  gap: 7px;
  flex-wrap: wrap;
}

.tag {
  font-size: 11.5px;
  line-height: 1;
  padding: 4px 9px;
  border-radius: 6px;
  color: var(--accent);
  background: #e7f6f3;
  white-space: nowrap;
}

.tag-ghost { color: var(--muted); background: #f1f5f9; }

.card-desc {
  margin: 13px 0 0;
  font-size: 13.5px;
  color: var(--muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-foot {
  margin-top: auto;
  padding-top: 15px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.size { font-size: 12.5px; color: #94a3b8; }

.btn {
  display: inline-block;
  padding: 7px 16px;
  font-size: 13.5px;
  font-family: inherit;
  text-decoration: none;
  border-radius: 8px;
  border: 1px solid var(--border);
  color: var(--text);
  background: #fff;
  cursor: pointer;
  transition: .15s;
}

.btn:hover { border-color: #9edfd8; color: var(--accent); }

.btn-primary {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border: none;
  color: #fff;
  font-weight: 600;
}

.btn-primary:hover { color: #fff; filter: brightness(1.06); }

.empty {
  padding: 60px 0;
  text-align: center;
  color: var(--muted);
}

/* ---------------- 弹窗 ---------------- */
.modal {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, .5);
  backdrop-filter: blur(2px);
}

.modal-card {
  position: relative;
  width: min(720px, 100%);
  max-height: 88vh;
  overflow-y: auto;
  background: var(--card);
  border-radius: 16px;
  padding: 26px 28px 24px;
  box-shadow: 0 24px 60px rgba(15, 23, 42, .28);
}

.modal-close {
  position: absolute;
  top: 12px;
  right: 14px;
  width: 32px;
  height: 32px;
  font-size: 22px;
  line-height: 1;
  color: var(--muted);
  background: transparent;
  border: none;
  border-radius: 8px;
  cursor: pointer;
}

.modal-close:hover { background: #f1f5f9; color: var(--text); }

.modal-head { display: flex; align-items: center; gap: 16px; padding-right: 30px; }

.modal-icon {
  width: 64px;
  height: 64px;
  flex: 0 0 64px;
  border-radius: 14px;
  object-fit: contain;
  background: #f1f5f9;
}

.modal-title h2 { margin: 0; font-size: 20px; font-weight: 600; }

.modal-title .meta { margin-top: 7px; display: flex; gap: 7px; flex-wrap: wrap; }

.modal-desc { margin: 18px 0 0; font-size: 14.5px; }

.feature-list {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.feature-list li {
  position: relative;
  padding-left: 22px;
  font-size: 14px;
  color: #374151;
}

.feature-list li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 9px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent-2);
}

.modal-actions {
  margin-top: 22px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.muted { color: var(--muted); font-size: 13.5px; }

/* ---------------- 详情分块 ---------------- */
.block { margin-top: 22px; }

.block-title {
  margin: 0 0 11px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: #0f172a;
}

.block-title::before {
  content: "";
  width: 3px;
  height: 14px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--accent), var(--accent-2));
}

.selling-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 9px;
}

.selling-list li {
  position: relative;
  padding: 10px 13px 10px 35px;
  font-size: 14px;
  color: #0f172a;
  background: #f0fbf9;
  border: 1px solid #d8f0ec;
  border-radius: 9px;
}

.selling-list li::before {
  content: "✓";
  position: absolute;
  left: 13px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
}

.detail-text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.9;
  color: #374151;
}

.code-chip {
  font-size: 13px;
  color: var(--muted);
  background: #f1f5f9;
  border-radius: 7px;
  padding: 8px 13px;
}

/* ---------------- 页脚 ---------------- */
.site-footer {
  border-top: 1px solid var(--border);
  background: #fff;
  padding: 20px 0;
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 560px) {
  .wrap { width: calc(100% - 28px); }
  .site-header { padding: 26px 0 22px; }
  .brand h1 { font-size: 22px; }
  .grid { grid-template-columns: 1fr; }
  .modal-card { padding: 22px 18px 20px; }
}