/* ============================================================
   celiangyuan-beikao.css — 测量员备考资料页
   前缀 celbk- · 牛仔裤复古风
   ============================================================ */

/* ---------- Hero ---------- */
.celbk-hero { padding: 130px 0 90px; }
.celbk-hero-grid { display: grid; grid-template-columns: .95fr 1.05fr; gap: 56px; align-items: center; }
.celbk-hero-pic { transform: rotate(-1.2deg); }
.celbk-hero-text h1 { font-size: clamp(34px,5vw,54px); line-height: 1.2; margin: 18px 0; }
.celbk-hero-text h1 i { font-style: normal; color: var(--rust); }
.celbk-hero-text p { font-size: 17px; color: var(--ink-soft); max-width: 520px; }
.celbk-hero-cta { margin-top: 30px; display: flex; flex-wrap: wrap; gap: 14px; }

/* ---------- 仪器 ---------- */
.celbk-inst { padding: 90px 0; }
.celbk-inst-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 22px; margin-top: 10px; }
.celbk-inst-card {
  background: var(--paper-100); border: 1px solid var(--line); border-radius: var(--r-md);
  padding: 26px 22px; box-shadow: var(--shadow-sm); border-top: 4px solid var(--denim-600);
  transition: transform .28s var(--ease);
}
.celbk-inst-card:hover { transform: translateY(-5px); }
.celbk-inst-card h3 { font-size: 18px; margin-bottom: 8px; color: var(--denim-800); }
.celbk-inst-card p { font-size: 14px; color: var(--ink-soft); line-height: 1.75; }

/* ---------- 误差 ---------- */
.celbk-err { padding: 90px 0; }
.celbk-err-list { display: flex; flex-direction: column; gap: 16px; max-width: 760px; margin: 10px auto 0; }
.celbk-err-row {
  display: grid; grid-template-columns: 150px 1fr; gap: 20px; align-items: center;
  background: rgba(250,246,238,.06); border: 1px solid rgba(255,255,255,.18); border-radius: var(--r-md); padding: 18px 22px;
}
.celbk-err-row b { color: var(--stitch); font-size: 16px; }
.celbk-err-row p { color: #d7e0ea; font-size: 14.5px; }

/* ---------- 计算练习 ---------- */
.celbk-calc { padding: 90px 0; }
.celbk-calc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.celbk-calc-text .kicker { display:block; }
.celbk-calc-text h2 { font-size: clamp(26px,3.2vw,36px); margin: 8px 0 18px; }
.celbk-calc-text h2 i { font-style: normal; color: var(--denim-600); }
.celbk-calc-text ol { display: flex; flex-direction: column; gap: 14px; }
.celbk-calc-text li { padding-left: 22px; position: relative; color: var(--ink-soft); font-size: 15px; }
.celbk-calc-text li::before {
  content: counter(calc); counter-increment: calc; position: absolute; left: 0; top: 2px;
  width: 18px; height: 18px; border-radius: 50%; background: var(--rust); color: var(--paper-100);
  font-size: 11px; display: flex; align-items: center; justify-content: center; font-weight: 700;
}
.celbk-calc-text ol { counter-reset: calc; }
.celbk-calc-text b { color: var(--denim-900); }

/* ---------- 避坑 ---------- */
.celbk-pit { padding: 90px 0; }
.celbk-pit-list { display: flex; flex-direction: column; gap: 14px; margin-top: 10px; }
.celbk-pit-item {
  display: flex; gap: 18px; align-items: flex-start;
  background: var(--white); border: 1px solid var(--line); border-radius: var(--r-md); padding: 18px 22px;
}
.celbk-pit-no { font-family: var(--font-serif); font-size: 28px; font-weight: 900; color: var(--denim-100); line-height: 1; flex: none; }
.celbk-pit-item p { font-size: 15px; color: var(--ink-soft); }
.celbk-pit-item b { color: var(--denim-900); }

/* ---------- 学习路线 ---------- */
.celbk-road { padding: 90px 0; }
.celbk-road-steps { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; margin-top: 10px; }
.celbk-road-item {
  background: var(--paper-100); border: 1px solid var(--line); border-radius: var(--r-md);
  padding: 26px 22px; box-shadow: var(--shadow-sm); transition: transform .28s var(--ease);
}
.celbk-road-item:hover { transform: translateY(-5px); }
.celbk-road-no { display: inline-block; font-size: 12px; letter-spacing: 2px; font-weight: 700; color: var(--rust); margin-bottom: 10px; }
.celbk-road-item h3 { font-size: 18px; margin-bottom: 8px; }
.celbk-road-item p { font-size: 14px; color: var(--ink-soft); }
.celbk-road-more { margin-top: 24px; text-align: center; color: var(--ink-soft); font-size: 14.5px; }

/* ---------- CTA ---------- */
.celbk-cta { padding: 90px 0; }
.celbk-cta-inner { max-width: 760px; margin: 0 auto; text-align: center; }
.celbk-cta-inner h2 { font-size: clamp(26px,3.4vw,38px); margin-bottom: 14px; }
.celbk-cta-inner p { color: #d7e0ea; font-size: 16px; }
.celbk-cta-btns { margin-top: 28px; display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .celbk-hero-grid, .celbk-calc-grid { grid-template-columns: 1fr; gap: 36px; }
  .celbk-inst-grid, .celbk-road-steps { grid-template-columns: 1fr; }
  .celbk-err-row { grid-template-columns: 1fr; gap: 6px; }
}
@media (max-width: 640px) {
  .celbk-hero { padding: 110px 0 60px; }
}
/* ---------- CTA 内浅色链接 ---------- */
.cta-link { color: var(--stitch); text-decoration: underline; text-underline-offset: 3px; }
.cta-link:hover { color: var(--paper-100); }
/* ---------- 牛仔蓝底上的描边按钮 ---------- */
.btn-outline--hero { color: var(--paper-100); border-color: var(--paper-100); }
.btn-outline--hero:hover { background: var(--paper-100); color: var(--denim-800); }

/* ---------- 计算自检清单 ---------- */
.celbk-check { padding: 90px 0; }
.celbk-check-list { display: flex; flex-direction: column; gap: 12px; margin-top: 10px; }
.celbk-check-row {
  display: flex; gap: 16px; align-items: flex-start;
  background: var(--paper-100); border: 1px solid var(--line); border-radius: var(--r-md); padding: 16px 20px;
}
.celbk-check-no {
  flex: none; font-family: var(--font-serif); font-size: 20px; font-weight: 900; color: var(--rust);
}
.celbk-check-row p { font-size: 14.5px; color: var(--ink-soft); }
.celbk-check-row b { color: var(--denim-900); }
.celbk-check-tip { margin-top: 20px; text-align: center; color: var(--ink-soft); font-size: 14.5px; }
/* ---------- 信阳本地提醒 ---------- */
.celbk-local { padding: 80px 0; }
.celbk-local-box { background: var(--white); border: 1px solid var(--line); border-radius: var(--r-md); padding: 32px 36px; box-shadow: var(--shadow-sm); border-left: 5px solid var(--rust); }
.celbk-local-box h3 { font-size: 20px; margin: 16px 0 10px; color: var(--denim-900); }
.celbk-local-box p { color: var(--ink-soft); font-size: 15px; line-height: 1.9; }