/* 关于我们 · 第六版对齐 · 色系对齐站点蓝紫品牌 */

.about-doc {
  --teal: var(--accent, #3779f7);
  --teal-d: var(--accent-2, #2b5aed);
  --teal-l: rgba(55, 121, 247, 0.12);
  --amber: var(--accent-purple, #7d6dff);
  --amber-l: rgba(125, 109, 255, 0.12);
  --bg: var(--bg-soft, #f3f7ff);
  --card: #ffffff;
  --white: #fff;
  --ink: var(--text, #1a2744);
  --soft: var(--text-muted, #5b6b86);
  --muted: var(--text-dim, #8a97ad);
  --line: var(--line, #dce6f5);
  --grad: var(--grad-btn, linear-gradient(135deg, #3779f7 0%, #6a6df8 55%, #7d6dff 100%));
  font-family: var(--font, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif);
  color: var(--ink);
  line-height: 1.75;
  background: var(--bg);
}

.about-doc a { color: var(--teal); text-decoration: none; }
.about-doc b, .about-doc strong { font-weight: 700; }

.about-doc .about-wrap {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 28px;
}

.about-doc .hero {
  background:
    radial-gradient(ellipse 60% 80% at 90% 0%, rgba(125, 109, 255, 0.12), transparent 55%),
    radial-gradient(ellipse 50% 70% at 8% 15%, rgba(55, 121, 247, 0.14), transparent 50%),
    linear-gradient(165deg, #e8f2ff 0%, #f5f8ff 42%, #ffffff 78%);
  padding: 48px 0 52px;
  border-bottom: 1px solid var(--line);
}
.about-doc .crumb {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 28px;
}
.about-doc .crumb a { color: var(--muted); }
.about-doc .crumb a:hover { color: var(--teal); }
.about-doc .crumb b { color: var(--teal-d); }
.about-doc .kick {
  display: inline-block;
  font-size: 12.5px;
  letter-spacing: 3px;
  color: var(--teal);
  font-weight: 700;
  margin-bottom: 14px;
}
.about-doc .hero h1 {
  font-size: clamp(1.85rem, 3.2vw, 2.4rem);
  color: var(--ink);
  line-height: 1.25;
  margin: 0 0 10px;
  letter-spacing: 0.02em;
}
.about-doc .hero .sub {
  font-size: 16px;
  color: var(--soft);
  margin: 0 0 22px;
  line-height: 1.65;
  max-width: 34em;
}
.about-doc .hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(300px, 0.95fr);
  gap: 32px 40px;
  align-items: start;
}
.about-doc .hero-copy {
  min-width: 0;
  padding-top: 4px;
}
.about-doc .hero-def {
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 5px solid var(--teal);
  border-radius: 14px;
  padding: 20px 22px;
  box-shadow: var(--shadow, 0 12px 36px rgba(43, 90, 237, 0.1));
}
.about-doc .hero-def p {
  margin: 0 0 12px;
  font-size: 15.5px;
  color: var(--ink);
  line-height: 1.8;
}
.about-doc .hero-def p:last-child { margin-bottom: 0; }
.about-doc .hero-points {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.about-doc .hero-points li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  color: var(--soft);
  line-height: 1.5;
}
.about-doc .hero-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--teal);
}
.about-doc .idcard {
  background: var(--grad);
  color: #eef3ff;
  border-radius: 16px;
  padding: 24px 26px;
  box-shadow: 0 14px 34px rgba(43, 90, 237, 0.28);
  position: relative;
  overflow: hidden;
  margin: 0;
  max-width: none;
}
.about-doc .idcard:after {
  content: "";
  position: absolute;
  right: -60px;
  top: -60px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
}
.about-doc .idcard h3 {
  font-size: 12.5px;
  letter-spacing: 3px;
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: 16px;
}
.about-doc .idcard .dl {
  display: grid;
  grid-template-columns: 86px 1fr;
  gap: 10px 12px;
  font-size: 13.4px;
  position: relative;
  z-index: 1;
}
.about-doc .idcard .dt { color: rgba(255, 255, 255, 0.65); }
.about-doc .idcard .dd { color: #fff; font-weight: 600; word-break: break-all; }
.about-doc .idcard .dd .ph {
  background: rgba(255, 255, 255, 0.14);
  border: 1px dashed rgba(255, 255, 255, 0.45);
  color: #ffe8b8;
}
.about-doc .hero-note {
  background: var(--amber-l);
  border: 1px solid rgba(125, 109, 255, 0.28);
  border-radius: 14px;
  padding: 18px 22px;
  font-size: 13.8px;
  color: #4a4580;
  align-self: center;
}

.about-doc section { padding: 56px 0 8px; }
.about-doc .sec-head { margin-bottom: 26px; }
.about-doc .sec-head .k {
  font-size: 12.5px;
  letter-spacing: 3px;
  color: var(--teal);
  font-weight: 700;
}
.about-doc .sec-head h2 {
  font-size: clamp(1.4rem, 2.5vw, 1.8rem);
  color: var(--ink);
  margin-top: 6px;
  letter-spacing: 0.02em;
}
.about-doc .sec-head p {
  color: var(--muted);
  font-size: 14.5px;
  margin-top: 8px;
}

.about-doc .card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 26px 28px;
  margin-bottom: 22px;
  box-shadow: 0 4px 16px rgba(43, 90, 237, 0.05);
}
.about-doc .fact {
  border-left: 4px solid var(--teal);
  padding-left: 20px;
  margin-bottom: 20px;
}
.about-doc .fact:last-child { margin-bottom: 0; }
.about-doc .fact h4 {
  font-size: 17px;
  color: var(--ink);
  margin-bottom: 7px;
}
.about-doc .fact p { color: var(--soft); font-size: 15px; }

.about-doc .b {
  display: inline-block;
  font-size: 12px;
  padding: 2px 10px;
  border-radius: 20px;
  font-weight: 700;
  vertical-align: middle;
  margin-left: 6px;
}
.about-doc .b-official { background: var(--teal-l); color: var(--teal-d); }
.about-doc .b-test { background: #eaf1ff; color: #2b5aed; }
.about-doc .b-guess { background: var(--amber-l); color: #5b4fd6; }

.about-doc .g2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}
.about-doc .g3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.about-doc .mini {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 20px 22px;
  box-shadow: 0 4px 14px rgba(43, 90, 237, 0.04);
}
.about-doc .mini h5 {
  font-size: 15.5px;
  color: var(--ink);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.about-doc .mini ul { list-style: none; margin: 0; padding: 0; }
.about-doc .mini li {
  font-size: 14px;
  color: var(--soft);
  padding-left: 18px;
  position: relative;
  margin-bottom: 7px;
}
.about-doc .mini li:before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--teal);
}
.about-doc .mini.no li:before,
.about-doc .mini ul.no li:before { background: var(--amber); }

.about-doc .cal {
  border-radius: 12px;
  padding: 18px 22px;
  font-size: 14.5px;
  margin: 18px 0 0;
}
.about-doc .cal-key {
  background: var(--teal-l);
  border: 1px solid #c9daf8;
  color: #33506e;
}
.about-doc .cal-good {
  background: #eaf6ee;
  border: 1px solid #cde8d6;
  color: #1e6b3a;
}
.about-doc .cal-warn {
  background: var(--amber-l);
  border: 1px solid rgba(125, 109, 255, 0.28);
  color: #4a4580;
}
.about-doc .cal-risk {
  background: #fdeeee;
  border: 1px solid #f3d2d2;
  color: #9c3434;
}
.about-doc .cal b {
  display: block;
  margin-bottom: 6px;
  font-size: 14.5px;
}

.about-doc table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14.3px;
  background: var(--white);
  border-radius: 12px;
  overflow: hidden;
}
.about-doc th {
  background: var(--teal-d);
  color: #fff;
  text-align: left;
  padding: 12px 16px;
  font-weight: 700;
  font-size: 13.8px;
}
.about-doc td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  color: var(--soft);
  vertical-align: top;
}
.about-doc tr:last-child td { border-bottom: none; }
.about-doc td:first-child {
  color: var(--ink);
  font-weight: 600;
  white-space: nowrap;
}
.about-doc .nap td:first-child {
  width: 130px;
  color: var(--muted);
  font-weight: 600;
}
.about-doc .nap td:nth-child(2) { color: var(--ink); }
.about-doc .tag-ok { color: #1e6b3a; font-weight: 700; white-space: nowrap; }
.about-doc .tag-todo { color: #5b4fd6; font-weight: 700; white-space: nowrap; }

.about-doc .ph {
  display: inline-block;
  background: var(--amber-l);
  border: 1px dashed var(--amber);
  color: #5b4fd6;
  border-radius: 5px;
  padding: 0 8px;
  font-size: 13px;
  font-weight: 600;
}

.about-doc .tl {
  position: relative;
  margin-left: 8px;
  padding-left: 28px;
  border-left: 2px solid #d6e3f5;
}
.about-doc .tl-item {
  position: relative;
  margin-bottom: 22px;
}
.about-doc .tl-item:before {
  content: "";
  position: absolute;
  left: -36px;
  top: 5px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--teal);
  border: 3px solid var(--teal-l);
}
.about-doc .tl-item.todo:before {
  background: var(--amber);
  border-color: var(--amber-l);
}
.about-doc .tl-item .yr {
  font-weight: 800;
  color: var(--ink);
  font-size: 15px;
}
.about-doc .tl-item p {
  color: var(--soft);
  font-size: 14.3px;
}

.about-doc .steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}
.about-doc .step {
  background: var(--white);
  border: 1px solid var(--line);
  border-top: 3px solid var(--teal);
  border-radius: 12px;
  padding: 16px 14px;
  text-align: center;
  box-shadow: 0 4px 14px rgba(43, 90, 237, 0.04);
}
.about-doc .step .n {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--teal-l);
  color: var(--teal-d);
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 9px;
}
.about-doc .step h6 {
  font-size: 14.5px;
  color: var(--ink);
  margin-bottom: 4px;
}
.about-doc .step p {
  font-size: 12.6px;
  color: var(--muted);
  line-height: 1.6;
}

.about-doc .fit {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}

.about-doc .cta {
  background: var(--grad);
  border-radius: 18px;
  padding: 40px 42px;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 30px;
  margin: 56px 0 40px;
  box-shadow: 0 16px 36px rgba(55, 121, 247, 0.28);
}
.about-doc .cta h3 {
  font-size: 24px;
  margin-bottom: 10px;
  color: #fff;
}
.about-doc .cta p {
  color: rgba(255, 255, 255, 0.88);
  font-size: 14.8px;
}
.about-doc .btns {
  margin-left: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
  white-space: nowrap;
}
.about-doc .btn {
  padding: 14px 26px;
  border-radius: 12px;
  font-weight: 700;
  font-size: 15px;
  text-align: center;
  display: inline-block;
}
.about-doc .btn-a {
  background: #fff;
  color: var(--teal-d);
}
.about-doc .btn-b {
  background: transparent;
  border: 1.5px solid rgba(255, 255, 255, 0.45);
  color: #fff;
}

@media (max-width: 900px) {
  .about-doc .hero-grid,
  .about-doc .g2,
  .about-doc .g3,
  .about-doc .steps,
  .about-doc .fit {
    grid-template-columns: 1fr;
  }
  .about-doc .steps { grid-template-columns: 1fr 1fr; }
  .about-doc .cta {
    flex-direction: column;
    align-items: flex-start;
  }
  .about-doc .btns {
    margin-left: 0;
    width: 100%;
  }
}