/* ===== 约思 TOC 智库 · 主页专属样式（原创） ===== */

/* ---- Hero ---- */
.hero {
  padding: 84px 0 72px;
  background: linear-gradient(160deg, #eef4fb 0%, var(--bg) 60%);
  border-bottom: 1px solid var(--line);
}
.hero-inner { max-width: 760px; margin: 0 auto; text-align: center; }
.hero h1 { font-size: 42px; color: var(--ink); line-height: 1.3; margin-bottom: 18px; }
.hero h1 .hl { color: var(--primary); }
.hero .lead { font-size: 17px; color: var(--muted); margin-bottom: 12px; }
.hero .lead .q { color: var(--ink); font-weight: 600; }
.hero .cta-row { margin-top: 28px; display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.hero .btn { padding: 12px 30px; font-size: 16px; }

/* ---- 工具卡片网格 ---- */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.tool-card { padding: 22px; display: flex; flex-direction: column; }
.tool-card .tool-head { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; margin-bottom: 4px; }
.tool-card h3 { font-size: 19px; color: var(--ink); }
.tool-card h3 .en { font-size: 13px; color: var(--muted); font-weight: 400; margin-left: 6px; }
.badge {
  flex-shrink: 0;
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 999px;
  white-space: nowrap;
}
.badge-suff { background: #e7f0fa; color: var(--primary); border: 1px solid #c4d8ee; }
.badge-nec { background: #fdf3e2; color: #9a6a1a; border: 1px solid #f0d9ab; }
.tool-card .answers { font-size: 13px; color: var(--accent); font-weight: 600; margin-bottom: 8px; }
.tool-card .answers.ext { color: var(--muted); }
.tool-card .purpose { font-size: 14px; margin-bottom: 12px; }
.tool-card .purpose .note { color: var(--muted); }
.tool-card .diagram {
  background: #fbfdff;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px;
  margin-bottom: 12px;
}
.tool-card .diagram svg { display: block; width: 100%; height: auto; }
.tool-card h4 { font-size: 13px; color: var(--muted); font-weight: 600; margin-bottom: 4px; }
.tool-card ol.steps { font-size: 13px; padding-left: 20px; color: var(--text); margin-bottom: 14px; }
.tool-card ol.steps li { margin-bottom: 2px; }
.tool-card .draw-link { margin-top: auto; font-size: 14px; font-weight: 600; }

/* ---- CLR 面板 ---- */
.clr-panel { margin-top: 26px; padding: 28px 30px; }
.clr-panel h3 { font-size: 20px; color: var(--ink); margin-bottom: 6px; }
.clr-panel .en { font-size: 13px; color: var(--muted); font-weight: 400; }
.clr-panel > p { font-size: 14px; color: var(--muted); margin-bottom: 16px; }
.clr-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px 28px;
  list-style: none;
  counter-reset: clr;
}
.clr-list li { counter-increment: clr; font-size: 14px; padding-left: 34px; position: relative; }
.clr-list li::before {
  content: counter(clr);
  position: absolute; left: 0; top: 2px;
  width: 22px; height: 22px; line-height: 22px;
  text-align: center; font-size: 12px; font-weight: 700;
  color: #fff; background: var(--primary); border-radius: 50%;
}
.clr-list li b { color: var(--ink); }

/* ---- 使用流程 ---- */
.flow-wrap { overflow-x: auto; padding: 10px 0; }
.flow-wrap svg { display: block; min-width: 860px; max-width: 1000px; margin: 0 auto; height: auto; }
.flow-notes { max-width: 760px; margin: 22px auto 0; font-size: 15px; color: var(--text); }
.flow-notes p { margin-bottom: 8px; }

/* ---- 应用场景 ---- */
.scenarios-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.scenario-card { padding: 22px; }
.scenario-card h3 { font-size: 17px; color: var(--ink); margin-bottom: 8px; }
.scenario-card h3 .en { font-size: 12px; color: var(--muted); font-weight: 400; margin-left: 6px; }
.scenario-card p { font-size: 14px; }

/* ---- 关于与声明 ---- */
.about-box { max-width: 820px; margin: 0 auto; padding: 30px 34px; }
.about-box p { font-size: 14px; margin-bottom: 12px; }
.about-box p:last-child { margin-bottom: 0; }

/* ---- 滚动淡入 ---- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .6s ease, transform .6s ease; }
.reveal.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---- 响应式 ---- */
@media (max-width: 992px) {
  .tools-grid { grid-template-columns: repeat(2, 1fr); }
  .scenarios-grid { grid-template-columns: repeat(2, 1fr); }
  .hero h1 { font-size: 34px; }
}
@media (max-width: 768px) {
  .tools-grid { grid-template-columns: 1fr; }
  .scenarios-grid { grid-template-columns: 1fr; }
  .clr-list { grid-template-columns: 1fr; }
  .hero { padding: 56px 0 48px; }
  .hero h1 { font-size: 28px; }
  .about-box { padding: 22px; }
}