/* 我的生活记事 · 商务白 + 深蓝 */
* { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #FFFFFF;
  --bg-soft: #F8FAFC;
  --border: #E2E8F0;
  --border-soft: #F1F5F9;
  --ink: #0F172A;
  --ink-2: #334155;
  --ink-3: #64748B;
  --primary: #1E40AF;
  --primary-deep: #1E3A8A;
  --primary-soft: #DBEAFE;
  --teal: #0F766E;
  --max: 1100px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: 15px; line-height: 1.8; color: var(--ink-2);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: 100%;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* 顶部备案条 */
.topbar {
  background: var(--ink); color: #CBD5E1;
  font-size: 12.5px; padding: 7px 0;
}
.topbar .container {
  display: flex; justify-content: space-between; align-items: center;
  gap: 16px; flex-wrap: wrap;
}
.topbar a { color: #CBD5E1; }
.topbar a:hover { color: #fff; }

/* 导航 */
.nav {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 50;
}
.nav .container {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.brand { font-size: 18px; font-weight: 700; color: var(--ink); }
.brand span { color: var(--primary); }
.menu { display: flex; gap: 4px; }
.menu a {
  font-size: 14.5px; color: var(--ink-2);
  padding: 8px 16px; border-radius: 6px;
  transition: background .18s, color .18s;
}
.menu a:hover { background: var(--primary-soft); color: var(--primary); }
.menu a.active { color: var(--primary); font-weight: 600; }
.menu-btn { display: none; background: none; border: none; padding: 8px; cursor: pointer; color: var(--ink); }

/* Hero */
.hero {
  background: linear-gradient(180deg, #EFF6FF 0%, #FFFFFF 100%);
  padding: 64px 0 48px; text-align: center;
}
.eyebrow {
  display: inline-block; font-size: 13px; color: var(--primary);
  background: var(--primary-soft); padding: 4px 14px;
  border-radius: 999px; margin-bottom: 20px; letter-spacing: 0.05em;
}
.hero h1 {
  font-size: clamp(28px, 4.5vw, 42px); font-weight: 800;
  color: var(--ink); line-height: 1.3; margin-bottom: 18px;
  letter-spacing: -0.01em;
}
.hero p {
  font-size: 16px; color: var(--ink-2); max-width: 640px;
  margin: 0 auto 28px; line-height: 1.9;
}
.actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.btn {
  display: inline-block; padding: 11px 26px;
  background: var(--primary); color: #fff;
  border-radius: 8px; font-size: 15px; font-weight: 500;
  transition: background .18s;
}
.btn:hover { background: var(--primary-deep); }
.btn.secondary { background: #fff; color: var(--primary); border: 1px solid var(--primary); }
.btn.secondary:hover { background: var(--primary-soft); }

/* 通用 section */
section { padding: 48px 0; }
.section-soft { background: var(--bg-soft); }
.section-title {
  font-size: 26px; font-weight: 700; color: var(--ink);
  text-align: center; margin-bottom: 10px;
}
.section-lead {
  text-align: center; color: var(--ink-3);
  font-size: 15px; max-width: 580px; margin: 0 auto 36px; line-height: 1.9;
}

/* 卡片网格 */
.grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}
.card {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: 12px; padding: 28px;
  transition: border-color .18s, box-shadow .18s, transform .18s;
}
.card:hover {
  border-color: var(--primary);
  box-shadow: 0 8px 24px rgba(30, 64, 175, 0.08);
  transform: translateY(-2px);
}
.card .icon {
  width: 44px; height: 44px; border-radius: 10px;
  background: var(--primary-soft); color: var(--primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; font-weight: 700; margin-bottom: 16px;
}
.card h3 { font-size: 17px; color: var(--ink); margin-bottom: 8px; font-weight: 600; }
.card p { font-size: 14px; color: var(--ink-3); line-height: 1.8; }

/* 分栏 */
.split {
  display: grid; grid-template-columns: 1fr 1fr; gap: 20px;
}
.list { list-style: none; }
.list li {
  padding: 8px 0; color: var(--ink-2); font-size: 15px;
  border-bottom: 1px solid var(--border-soft);
}
.list li:last-child { border-bottom: none; }
.list li::before { content: "✓ "; color: var(--teal); font-weight: 700; }
.card-link { margin-top: 12px; }
.card-link a { color: var(--primary); font-weight: 500; }
.card-link a:hover { text-decoration: underline; }

/* 内页 */
.page-head { padding: 48px 0 20px; }
.page-head h1 { font-size: 28px; color: var(--ink); margin-bottom: 8px; font-weight: 700; }
.page-head .lead { color: var(--ink-3); max-width: 640px; line-height: 1.9; }
.crumb { font-size: 13px; color: var(--ink-3); padding: 20px 0 0; }
.crumb a { color: var(--ink-3); }
.crumb a:hover { color: var(--primary); }
.crumb .sep { margin: 0 8px; color: var(--border); }

/* 工具操作区 */
.tool-panel {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: 12px; padding: 28px; margin-bottom: 20px;
}
.tool-panel label {
  display: block; font-size: 13.5px; color: var(--ink-3);
  margin-bottom: 6px; font-weight: 500;
}
.tool-panel input, .tool-panel select, .tool-panel textarea {
  width: 100%; font-size: 15px; color: var(--ink);
  background: var(--bg-soft); border: 1px solid var(--border);
  border-radius: 8px; padding: 11px 14px; outline: none;
  transition: border-color .18s;
  font-family: inherit;
}
.tool-panel textarea { resize: vertical; min-height: 130px; line-height: 1.7; }
.tool-panel input:focus, .tool-panel select:focus, .tool-panel textarea:focus {
  border-color: var(--primary); background: #fff;
}
.row { display: flex; gap: 10px; margin-top: 14px; flex-wrap: wrap; }
.row > * { flex: 1; min-width: 120px; }

.result {
  margin-top: 16px; padding: 14px 16px;
  background: var(--bg-soft); border: 1px solid var(--border);
  border-radius: 8px; font-size: 14.5px; color: var(--ink);
  line-height: 1.8; white-space: pre-wrap; word-break: break-all;
  min-height: 44px;
}
.result.empty { color: var(--ink-3); }
.tip { font-size: 13.5px; color: var(--ink-3); margin-top: 10px; line-height: 1.75; }

.note {
  background: var(--bg-soft); border-radius: 12px;
  padding: 24px 28px; margin-bottom: 20px;
}
.note h2 { font-size: 16px; color: var(--ink); margin-bottom: 10px; font-weight: 600; }
.note p { font-size: 14.5px; color: var(--ink-2); margin-bottom: 10px; line-height: 1.9; }
.note p:last-child { margin-bottom: 0; }

/* 文章 */
.article { max-width: 700px; padding: 16px 0 40px; }
.article p { font-size: 15.5px; line-height: 2; color: var(--ink-2); margin-bottom: 18px; }
.article p:last-child { margin-bottom: 0; }
.article code {
  background: var(--primary-soft); color: var(--primary);
  padding: 2px 7px; border-radius: 4px; font-size: 13.5px;
  font-family: ui-monospace, Consolas, monospace;
}
.article pre {
  background: var(--ink); color: #E2E8F0; padding: 14px 18px;
  border-radius: 8px; overflow-x: auto; margin-bottom: 18px;
  font-size: 13.5px; line-height: 1.7;
}
.article h2 { font-size: 19px; color: var(--ink); margin: 28px 0 14px; font-weight: 700; }

.arts { display: flex; flex-direction: column; }
.art {
  padding: 18px 0; border-bottom: 1px solid var(--border-soft);
  display: block;
}
.art:last-child { border-bottom: none; }
.art .t { font-size: 16px; color: var(--ink); margin-bottom: 4px; font-weight: 600; }
.art:hover .t { color: var(--primary); }
.art .d { font-size: 13.5px; color: var(--ink-3); line-height: 1.75; }

/* 页脚 */
.footer {
  background: var(--ink); color: #94A3B8;
  padding: 48px 0 24px; margin-top: 48px;
  font-size: 14px; line-height: 2;
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 32px;
  margin-bottom: 32px;
}
.footer strong { color: #E2E8F0; font-size: 15px; display: block; margin-bottom: 8px; }
.footer a { color: #94A3B8; }
.footer a:hover { color: #fff; }
.copyright {
  border-top: 1px solid #1E293B; padding-top: 20px;
  font-size: 13px; text-align: center;
}
.copyright a { color: #94A3B8; }

@media (max-width: 720px) {
  .topbar .container { font-size: 11.5px; }
  .menu { display: none; position: absolute; top: 64px; left: 0; right: 0;
    background: #fff; border-bottom: 1px solid var(--border);
    flex-direction: column; padding: 8px 16px 12px; }
  .menu.open { display: flex; }
  .menu a { padding: 12px; }
  .menu-btn { display: block; }
  .container { padding: 0 16px; }
  .hero { padding: 40px 0 28px; }
  .split { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 20px; }
  .row { flex-direction: column; }
}