/* =====================================================================
 * momo mini q · 系统原理说明 + 结构图 样式
 * ===================================================================== */

/* ---------------- A. 白话说明卡 ---------------- */
#plain-talk { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.pt-card {
  border: 1px solid var(--line); border-radius: var(--r);
  background: linear-gradient(160deg, var(--bg1), var(--bg0));
  padding: 15px 16px; transition: border-color .22s, transform .22s;
}
.pt-card:hover { border-color: var(--line2); transform: translateY(-2px); }
.pt-h { display: flex; align-items: flex-start; gap: 10px; }
.pt-ic {
  flex: 0 0 34px; height: 34px; display: grid; place-items: center;
  font-size: 18px; border-radius: var(--r2);
  background: var(--bg2); border: 1px solid var(--line);
}
.pt-h h3 { font-size: 15px; line-height: 1.4; margin: 0; color: var(--tx0); }
.pt-key {
  margin: 11px 0 9px; font-size: 12px; font-weight: 700; color: var(--ac);
  border-left: 2px solid var(--ac); padding-left: 9px; letter-spacing: .2px;
}
.pt-b { font-size: 12.5px; line-height: 1.85; color: var(--tx1); }
.pt-b b { color: var(--tx0); }

/* ---------------- B. 结构图 ---------------- */
#blueprint-map { display: block; }
.bp-lane {
  border: 1px solid var(--line); border-radius: var(--r);
  background: rgba(255, 255, 255, .012); padding: 13px 14px 14px;
}
.bp-lane-h {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 11px;
}
.bp-tag {
  font-size: 11px; font-weight: 800; letter-spacing: .5px;
  border: 1px solid; border-radius: 999px; padding: 3px 11px; white-space: nowrap;
}
.bp-note { font-size: 11.5px; color: var(--tx2); }

.bp-cols { display: grid; gap: 10px; }
.bp-cols[data-n="3"] { grid-template-columns: repeat(3, 1fr); }
.bp-cols[data-n="4"] { grid-template-columns: repeat(4, 1fr); }
.bp-box {
  border: 1px solid var(--line); border-radius: var(--r2);
  background: var(--bg1); padding: 11px 12px; display: block;
  transition: border-color .2s, transform .2s;
}
a.bp-box:hover { border-color: var(--ac); transform: translateY(-2px); }
.bp-box-h {
  display: flex; align-items: center; gap: 7px; flex-wrap: wrap; margin-bottom: 3px;
}
.bp-box-h b { font-size: 13px; color: var(--tx0); }
.bp-box-s { font-size: 10.5px; color: var(--tx3); margin-bottom: 6px; }
.bp-box-d { font-size: 11.5px; color: var(--tx1); line-height: 1.7; }

/* 铁律带 */
.bp-law {
  border: 1px dashed; border-radius: var(--r2);
  background: rgba(255, 77, 109, .06);
  padding: 11px 14px; display: flex; align-items: center; gap: 10px;
  margin-bottom: 11px;
}
.bp-law i { color: var(--ac4); font-size: 15px; }
.bp-law b { font-size: 13.5px; color: var(--tx0); letter-spacing: .2px; }
.bp-split {
  display: grid; grid-template-columns: 1fr auto 1fr;
  align-items: center; gap: 10px;
}
.bp-chan {
  border: 1px solid; border-radius: var(--r2);
  background: var(--bg1); padding: 11px 12px;
}
.bp-chan h4 { font-size: 13px; margin-bottom: 5px; }
.bp-vs {
  font-size: 10px; font-weight: 800; color: var(--ac4); letter-spacing: 1px;
  border: 1px solid rgba(255, 77, 109, .4); border-radius: 999px;
  padding: 5px 8px; white-space: nowrap; writing-mode: vertical-rl;
}

/* 泳道间箭头 */
.bp-arrow {
  text-align: center; color: var(--tx3); font-size: 13px;
  padding: 5px 0; line-height: 1;
}

/* ---------------- C. 定制化流程 ---------------- */
#flow-steps { display: block; }
.fw-step { display: flex; gap: 12px; align-items: stretch; }
.fw-no {
  flex: 0 0 46px; display: grid; place-items: center;
  font-family: var(--mono); font-size: 13px; font-weight: 700;
  color: var(--ac2); border: 1px solid var(--line);
  border-radius: var(--r2); background: var(--bg1);
}
.fw-main {
  flex: 1 1 auto; border: 1px solid var(--line); border-radius: var(--r2);
  background: var(--bg1); padding: 10px 13px;
}
.fw-h { display: flex; align-items: center; gap: 7px; flex-wrap: wrap; margin-bottom: 7px; }
.fw-h b { font-size: 13.5px; color: var(--tx0); }
.fw-io { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; }
.fw-io span { font-size: 11.5px; color: var(--tx1); line-height: 1.65; }
.fw-io i {
  font-style: normal; display: block; font-size: 10px; color: var(--tx3);
  letter-spacing: .6px; margin-bottom: 1px;
}
.fw-link {
  width: 1px; height: 12px; margin: 0 0 0 23px;
  background: linear-gradient(var(--line2), transparent);
}

/* 总耗时对比 */
.ft-row { display: flex; align-items: center; gap: 11px; margin-bottom: 8px; }
.ft-k { flex: 0 0 168px; font-size: 12px; color: var(--tx1); }
.ft-bar {
  flex: 1 1 auto; height: 9px; border-radius: 999px;
  background: rgba(255, 255, 255, .06); overflow: hidden;
}
.ft-bar i { display: block; height: 100%; border-radius: 999px; }
.ft-v {
  flex: 0 0 76px; text-align: right; font-family: var(--mono);
  font-size: 12.5px; font-weight: 700; color: var(--tx0);
}

/* ---------------- 响应式 ---------------- */
@media (max-width: 1180px) {
  #plain-talk { grid-template-columns: repeat(2, 1fr); }
  .bp-cols[data-n="4"] { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px) {
  .bp-cols[data-n="3"] { grid-template-columns: 1fr; }
  .bp-split { grid-template-columns: 1fr; }
  .bp-vs { writing-mode: horizontal-tb; justify-self: center; }
  .fw-io { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  #plain-talk { grid-template-columns: 1fr; }
  .bp-cols[data-n="4"] { grid-template-columns: 1fr; }
  .pt-h h3 { font-size: 14px; }
  .bp-law { flex-direction: column; align-items: flex-start; gap: 6px; }
  .bp-law b { font-size: 12.5px; }
  .fw-no { flex: 0 0 38px; font-size: 12px; }
  .ft-k { flex: 0 0 100px; font-size: 11px; }
  .ft-v { flex: 0 0 62px; font-size: 11.5px; }
}