/* ============================================================
   美股图表笔记本 · 设计系统（第六种风格：手绘交易笔记本）
   色彩：点阵奶油纸 + 圆珠笔靛蓝 + 荧光粉/黄荧光笔 + 马克笔绿
   签名：旋转便利贴卡片 + 点阵网格纸 + 荧光笔下划线标题
   ============================================================ */

:root {
  --notebook: #f8f4e6;
  --notebook-deep: #efe8d4;
  --card: #fffdf6;
  --ink: #2d2a5c;
  --ink-soft: #4a4778;
  --line: rgba(45, 42, 92, 0.16);
  --line-strong: rgba(45, 42, 92, 0.3);

  --pink: #ff4f8b;
  --yellow: #ffe066;
  --green: #2f9e5c;
  --red: #e0472e;

  --muted: #6b6a8a;
  --faint: #9997b3;

  --font-display: "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "Roboto Mono", "DIN Alternate", "Consolas", monospace;

  --container: 1140px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    radial-gradient(circle, rgba(45,42,92,0.10) 1px, transparent 1.2px) 0 0 / 22px 22px,
    var(--notebook);
  color: var(--ink-soft);
  font-family: var(--font-body);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.wrap { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* ---------- 顶部封面条 ---------- */
.notebook-top { background: var(--card); border-bottom: 2px solid var(--ink); }
.notebook-top .wrap { display: flex; align-items: center; justify-content: space-between; height: 66px; }
.brand { display: flex; align-items: center; gap: 10px; font-family: var(--font-display); font-weight: 900; font-size: 19px; color: var(--ink); }
.brand .clip { width: 24px; height: 24px; border-radius: 50%; background: var(--pink); display: flex; align-items: center; justify-content: center; font-size: 11px; color: #fff; font-weight: 900; transform: rotate(-8deg); }
nav.notebook-nav { display: flex; gap: 20px; }
nav.notebook-nav a { font-size: 14px; color: var(--ink-soft); font-weight: 700; position: relative; }
nav.notebook-nav a:hover { color: var(--pink); }
.btn-cs { background: var(--ink); color: var(--notebook); border: none; padding: 9px 18px; font-weight: 700; font-size: 13.5px; cursor: pointer; border-radius: 20px; }
.btn-cs:hover { background: var(--pink); }

/* ---------- Hero ---------- */
.notebook-hero { padding: 60px 0 50px; border-bottom: 1px dashed var(--line-strong); position: relative; }
.hero-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 50px; align-items: center; }
.eyebrow { display: inline-block; font-weight: 800; font-size: 13px; color: var(--ink); background: var(--yellow); padding: 3px 10px; transform: rotate(-1.5deg); margin-bottom: 20px; }
.notebook-hero h1 { font-family: var(--font-display); font-weight: 900; font-size: 40px; line-height: 1.38; margin: 0 0 20px; color: var(--ink); }
.notebook-hero h1 mark { background: linear-gradient(transparent 60%, var(--pink) 60%, var(--pink) 88%, transparent 88%); color: var(--ink); padding: 0 2px; }
.notebook-hero p.lead { font-size: 15.5px; color: var(--muted); max-width: 46ch; margin-bottom: 30px; }
.hero-actions { display: flex; gap: 12px; margin-bottom: 34px; }
.btn-primary { background: var(--ink); color: var(--notebook); border: none; padding: 13px 26px; font-weight: 800; font-size: 14.5px; cursor: pointer; border-radius: 24px; }
.btn-primary:hover { background: var(--pink); }
.btn-ghost { border: 2px solid var(--ink); color: var(--ink); padding: 11px 24px; font-weight: 800; font-size: 14.5px; background: transparent; cursor: pointer; border-radius: 24px; }

/* 便利贴（签名元素） */
.sticky-row { display: flex; gap: 16px; flex-wrap: wrap; }
.sticky {
  background: var(--yellow); padding: 14px 16px; width: 128px;
  box-shadow: 3px 4px 0 rgba(45,42,92,0.15);
  font-family: var(--font-mono); font-size: 12px; color: var(--ink);
}
.sticky:nth-child(2) { background: var(--pink); color: #fff; transform: rotate(3deg); }
.sticky:nth-child(1) { transform: rotate(-4deg); }
.sticky:nth-child(3) { background: var(--card); border: 1px solid var(--line-strong); transform: rotate(-2deg); }
.sticky b { display: block; font-size: 20px; margin-bottom: 4px; }

/* 笔记本插图面板 */
.sketch-panel { background: var(--card); border: 1px solid var(--line-strong); padding: 22px; position: relative; box-shadow: 6px 6px 0 rgba(45,42,92,0.08); }
.sketch-panel::before { content: "✎ 图表笔记"; position: absolute; top: -12px; left: 20px; background: var(--card); padding: 0 8px; font-size: 12px; color: var(--faint); font-weight: 700; }

/* ---------- 通用 section ---------- */
section { padding: 58px 0; }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: 28px; }
.section-head h2 { font-family: var(--font-display); font-weight: 900; font-size: 24px; margin: 0; color: var(--ink); }
.section-head .num { display: inline-block; background: var(--ink); color: var(--notebook); font-family: var(--font-mono); font-size: 11px; padding: 2px 8px; border-radius: 10px; margin-right: 8px; }
.section-head a.more { font-weight: 700; font-size: 13.5px; color: var(--green); white-space: nowrap; }

/* 五栏模块：便签夹角卡片 */
.pillar-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.pillar-card { background: var(--card); border: 1px solid var(--line-strong); padding: 22px 18px; position: relative; }
.pillar-card::after { content: ""; position: absolute; top: 0; right: 0; border-width: 0 16px 16px 0; border-style: solid; border-color: var(--notebook-deep) var(--notebook) var(--notebook-deep) var(--notebook-deep); }
.pillar-card .n { font-family: var(--font-mono); color: var(--pink); font-size: 12px; font-weight: 700; }
.pillar-card h3 { font-family: var(--font-display); font-size: 15.5px; margin: 8px 0 8px; font-weight: 800; color: var(--ink); }
.pillar-card p { color: var(--muted); font-size: 12.5px; margin: 0 0 12px; line-height: 1.6; }
.pillar-card .go { font-family: var(--font-mono); font-size: 11.5px; color: var(--green); }

/* 指标卡片 */
.indicator-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.indicator-card { background: var(--card); border: 1px solid var(--line-strong); padding: 16px; }
.indicator-card .abbr { font-family: var(--font-mono); font-weight: 800; font-size: 16px; color: var(--ink); }
.indicator-card .full { font-size: 12px; color: var(--muted); margin-top: 6px; }

/* 记录列表 */
.entry-list { display: flex; flex-direction: column; }
.entry-row { display: flex; align-items: center; gap: 14px; padding: 15px 0; border-bottom: 1px dashed var(--line-strong); }
.entry-row .cat { font-family: var(--font-mono); font-size: 11px; color: var(--pink); width: 60px; flex-shrink: 0; font-weight: 700; }
.entry-row h4 { font-family: var(--font-display); font-size: 15px; margin: 0; font-weight: 700; color: var(--ink); flex: 1; }
.entry-row .arrow { font-family: var(--font-mono); color: var(--faint); font-size: 13px; }

/* FAQ */
.qa-card { background: var(--card); border-left: 4px solid var(--pink); padding: 18px 22px; margin-bottom: 12px; }
.qa-card h4 { font-family: var(--font-display); font-size: 15px; margin: 0 0 8px; color: var(--ink); font-weight: 800; }
.qa-card p { color: var(--muted); font-size: 13.5px; margin: 0; }

/* ---------- footer ---------- */
.disclaimer { background: var(--ink); color: var(--notebook-deep); padding: 20px 0; font-size: 12.5px; }
footer { background: var(--notebook-deep); padding: 44px 0 24px; border-top: 1px dashed var(--line-strong); }
.footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr 1fr; gap: 30px; margin-bottom: 30px; }
.footer-grid h5 { font-family: var(--font-display); font-size: 12.5px; color: var(--ink); margin: 0 0 12px; font-weight: 800; }
.footer-grid ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 8px; }
.footer-grid a { font-size: 13px; color: var(--muted); }
.footer-grid a:hover { color: var(--pink); }
.footer-bottom { border-top: 1px solid var(--line-strong); padding-top: 16px; font-size: 12px; color: var(--faint); }

/* ---------- 内页 ---------- */
.page-head { padding: 46px 0 36px; border-bottom: 1px dashed var(--line-strong); }
.breadcrumb { font-family: var(--font-mono); font-size: 12px; color: var(--faint); margin-bottom: 14px; }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--pink); }
.page-head .tag { display: inline-block; font-weight: 800; font-size: 12px; background: var(--yellow); color: var(--ink); padding: 3px 10px; margin-bottom: 14px; transform: rotate(-1deg); }
.page-head h1 { font-family: var(--font-display); font-weight: 900; font-size: 29px; margin: 0 0 12px; line-height: 1.4; color: var(--ink); }
.page-head p { color: var(--muted); max-width: 60ch; }
.article-body h2 { font-family: var(--font-display); font-weight: 800; font-size: 18px; margin-top: 30px; color: var(--ink); }
.article-body h2::before { content: "▸ "; color: var(--pink); }
.article-body p { color: var(--ink-soft); font-size: 15.5px; }
.note-box { border: 2px dashed var(--line-strong); background: var(--card); padding: 18px 20px; font-size: 13.5px; color: var(--muted); margin: 28px 0; }
.related-box { margin-top: 34px; padding-top: 20px; border-top: 2px solid var(--ink); }
.related-box h5 { font-family: var(--font-mono); font-size: 11.5px; color: var(--muted); margin: 0 0 12px; }
.related-box ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 8px; }
.related-box a { font-weight: 700; font-size: 14px; color: var(--green); }
.related-box a:hover { color: var(--pink); }

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  nav.notebook-nav { display: none; }
  .hero-grid { grid-template-columns: 1fr; }
  .notebook-hero h1 { font-size: 30px; }
  .pillar-grid { grid-template-columns: repeat(2, 1fr); }
  .indicator-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}