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

:root {
  --bg: #f5f6fa;
  --card: #ffffff;
  --primary: #4f46e5;
  --primary-dark: #4338ca;
  --text: #1f2937;
  --muted: #6b7280;
  --border: #e5e7eb;
  --gold: #f59e0b;
  --danger: #ef4444;
  --radius: 12px;
}

body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

/* 顶栏 */
.navbar {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 20px;
}
.logo { font-size: 20px; font-weight: 700; text-decoration: none; color: var(--primary); white-space: nowrap; }
.search-box { flex: 1; }
.search-box input, .hero-search input {
  width: 100%;
  padding: 10px 16px;
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 14px;
  outline: none;
  transition: border .2s;
}
.search-box input:focus, .hero-search input:focus { border-color: var(--primary); }
.nav-right { display: flex; align-items: center; gap: 10px; }
.user-badge {
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 14px;
  cursor: pointer;
  background: var(--bg);
  border: 1px solid var(--border);
  transition: all .2s;
}
.user-badge.vip { background: linear-gradient(135deg, #f59e0b, #f97316); color: #fff; border-color: transparent; }

/* Hero */
.hero {
  background: linear-gradient(135deg, #4f46e5, #7c3aed);
  color: #fff;
  text-align: center;
  padding: 60px 20px;
}
.hero h1 { font-size: 36px; margin-bottom: 10px; }
.hero-sub { opacity: .9; margin-bottom: 30px; font-size: 16px; }
.hero-search { max-width: 500px; margin: 0 auto 30px; }
.hero-search input { border: none; padding: 14px 20px; font-size: 15px; }
.hero-stats { display: flex; justify-content: center; gap: 50px; }
.stat { display: flex; flex-direction: column; }
.stat b { font-size: 28px; }
.stat span { font-size: 13px; opacity: .85; }

/* 分类栏 */
.category-bar {
  max-width: 1100px;
  margin: 20px auto 0;
  padding: 0 20px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.cat-chip {
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 14px;
  cursor: pointer;
  background: var(--card);
  border: 1px solid var(--border);
  transition: all .2s;
  user-select: none;
}
.cat-chip.active { background: var(--primary); color: #fff; border-color: var(--primary); }

/* 工具墙 */
.container {
  max-width: 1100px;
  margin: 24px auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 18px;
}
.tool-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  cursor: pointer;
  transition: transform .15s, box-shadow .15s;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.tool-card:hover { transform: translateY(-3px); box-shadow: 0 8px 20px rgba(0,0,0,.08); }
.tool-icon { font-size: 32px; }
.tool-name { font-size: 16px; font-weight: 600; }
.tool-desc { font-size: 13px; color: var(--muted); line-height: 1.5; flex: 1; }
.tool-tags { display: flex; gap: 6px; flex-wrap: wrap; }
.tag { font-size: 11px; padding: 3px 8px; border-radius: 10px; background: #eef2ff; color: var(--primary); }
.tag.vip { background: #fef3c7; color: #b45309; }
.tag.free { background: #dcfce7; color: #166534; }

/* 定价区 */
.pricing-section { max-width: 1100px; margin: 40px auto; padding: 0 20px; }
.section-title { text-align: center; font-size: 24px; margin-bottom: 24px; }
.pricing-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 20px; }
.price-plan {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 30px 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  position: relative;
}
.price-plan.featured { border-color: var(--primary); box-shadow: 0 8px 24px rgba(79,70,229,.15); }
.plan-badge {
  position: absolute;
  top: -12px;
  right: 20px;
  background: linear-gradient(135deg, #f59e0b, #f97316);
  color: #fff;
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 12px;
}
.plan-name { font-size: 16px; font-weight: 600; }
.plan-price { font-size: 36px; font-weight: 800; color: var(--primary); }
.plan-price .unit { font-size: 14px; font-weight: 400; color: var(--muted); }
.price-plan ul { list-style: none; display: flex; flex-direction: column; gap: 8px; font-size: 14px; color: var(--muted); flex: 1; }

/* 弹窗 */
.modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.5);
  z-index: 200;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.modal.show { display: flex; }
.modal-box {
  background: var(--card);
  border-radius: 16px;
  padding: 30px;
  width: 100%;
  max-width: 380px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.modal-wide { max-width: 640px; max-height: 85vh; overflow-y: auto; }
.modal-head { display: flex; justify-content: space-between; align-items: center; }
.modal-box h2 { font-size: 20px; }
.close-btn { cursor: pointer; font-size: 20px; color: var(--muted); }
.modal-box input {
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 14px;
  outline: none;
}
.modal-box input:focus { border-color: var(--primary); }
.muted { color: var(--muted); font-size: 13px; }
.small { font-size: 12px; }

.btn-row { display: flex; gap: 10px; }
.btn {
  flex: 1;
  padding: 12px;
  border: none;
  border-radius: 10px;
  font-size: 14px;
  cursor: pointer;
  transition: all .2s;
  background: var(--primary);
  color: #fff;
}
.btn:hover { background: var(--primary-dark); }
.btn-primary { background: linear-gradient(135deg, #f59e0b, #f97316); }
.btn-primary:hover { opacity: .9; }
.btn-ghost { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn-ghost:hover { background: var(--bg); }

.pay-title { font-size: 16px; font-weight: 600; }
.price-card {
  background: linear-gradient(135deg, #fef3c7, #fff7ed);
  border: 1px solid #fde68a;
  border-radius: 12px;
  padding: 20px;
  text-align: center;
}
.price { font-size: 36px; font-weight: 800; color: #b45309; }
.unit { font-size: 14px; font-weight: 400; }
.price-desc { font-size: 13px; color: var(--muted); margin-top: 4px; }

/* 工具主体 */
.tool-body { display: flex; flex-direction: column; gap: 16px; }
.tool-body textarea {
  width: 100%;
  min-height: 100px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 14px;
  font-family: inherit;
  resize: vertical;
  outline: none;
}
.tool-body textarea:focus { border-color: var(--primary); }
.result-box {
  background: #f8fafc;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px;
  font-size: 14px;
  min-height: 50px;
  white-space: pre-wrap;
  word-break: break-all;
}
.download-card {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: flex-start;
}
.download-card .desc { color: var(--muted); font-size: 13px; line-height: 1.6; }

.footer { text-align: center; padding: 30px; color: var(--muted); font-size: 13px; }
.empty { grid-column: 1/-1; text-align: center; color: var(--muted); padding: 60px; }

@media (max-width: 600px) {
  .nav-inner { flex-wrap: wrap; }
  .search-box { order: 3; width: 100%; }
  .hero-stats { gap: 30px; }
}